diff --git a/ChangeLog b/ChangeLog index 02d3df9..86c27a4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,45 @@ +Version 1.0.33 November 04 2017 +------------------------------------------------------------------------ + +Guus Sliepen (31): + Udpate THANKS. + Fix a potential memory leak. + Use AC_CONFIG_MACRO_DIR(). + Give absolute path for #include to AC_CHECK_HEADERS(). + Prepare for automatic code formatting using Artistic Style. + Never remove items from cmdline_conf. + Use stack-allocated strings for temporary filenames. + Fix a few minor memory leaks. + Remove unused/obsolete checks from configure.ac. + Use getcwd() instead of get_current_dir_name(). + Remove xmalloc.c, backport xalloc.h from tinc 1.1. + Update all header guards. + Convert sizeof foo to sizeof(foo). + Reformat all code using astyle. + Don't call ERR_remove_state(). + Unconditionally include stdbool.h and inttypes.h. + Remove more obsolete autoconf checks. + Remove obsolete m4/README. + Fix some "make distcheck" errors. + Add some information about the requirements of a chroot environment. + Handle tun/tap device returning EPERM or EBUSY. + Disable PMTU discovery when TCPOnly is used. + Fix all -Wall -W compiler warnings. + Realign comments. + Remove unused functions. + Ensure all parameters have names in header files. + Support autoconf's --runstatedir option. + Const correctness. + Fix compilation errors when --enable-uml is used. + Update THANKS. + Releasing 1.0.33. + +Rafael Sadowski (1): + fix tinc.conf for OpenBSD + +nemunaire (1): + Allow compilation from a build directory + Version 1.0.32 September 02 2017 ------------------------------------------------------------------------ @@ -183,7 +225,20 @@ VittGam (1): Version 1.0.24 May 11 2014 ------------------------------------------------------------------------ -Guus Sliepen (13): +Guus Sliepen (26): + Mention in the manual that multiple Address staments are allowed. + If no Port is specified, set myport to actual port of first listening socket. + Enable compiler hardening flags by default. + Update support for Solaris. + Include for PATH_MAX. + Stricter check for raw socket support. + Use hardcoded value for TUNNEWPPA if net/if_tun.h is missing on Solaris. + Fix incorrectly merged bits from 80cd2ff73071941a5356555b85a00ee90dfd0e16. + Don't enable -fstack-protector-all. + Remove or lower the priority of some debug messages. + Clarify StrictSubnets. + Attribution for various contributors. + Handle errors from TAP-Win32/64 adapter in a better way. Remove useless variable 'hard' from try_harder(). Merge pull request #14 from luckyhacky/master Add an autoconf check for res_init(). @@ -203,40 +258,22 @@ Steffan Karger (3): Use cryptographically strong random when generating keys. Check RAND_bytes() return value, fail when getting random fails. +Florent Clairambault (2): + Adding "conf.d" configuration dir support. + Adding some documentation around the /etc/tinc/$NET/conf.d directory. + Armin Fisslthaler (1): reload /etc/resolv.conf in SIGALRM handler Loic Dachary (1): fix documentation typo -luckyhacky (1): - update to openssl version 1.0.1g due to lack of heartbleed bug in prior version of openssl - -refs/tags/1.0.23-android-1 March 11 2014 ------------------------------------------------------------------------- - -Guus Sliepen (13): - Mention in the manual that multiple Address staments are allowed. - If no Port is specified, set myport to actual port of first listening socket. - Enable compiler hardening flags by default. - Update support for Solaris. - Include for PATH_MAX. - Stricter check for raw socket support. - Use hardcoded value for TUNNEWPPA if net/if_tun.h is missing on Solaris. - Fix incorrectly merged bits from 80cd2ff73071941a5356555b85a00ee90dfd0e16. - Don't enable -fstack-protector-all. - Remove or lower the priority of some debug messages. - Clarify StrictSubnets. - Attribution for various contributors. - Handle errors from TAP-Win32/64 adapter in a better way. - -Florent Clairambault (2): - Adding "conf.d" configuration dir support. - Adding some documentation around the /etc/tinc/$NET/conf.d directory. - Vilbrekin (1): Update android build instructions. Disable PIE as this is not supported on some devices. +luckyhacky (1): + update to openssl version 1.0.1g due to lack of heartbleed bug in prior version of openssl + Version 1.0.23 October 19 2013 ------------------------------------------------------------------------ diff --git a/Makefile.am b/Makefile.am index c03d020..bfaf557 100644 --- a/Makefile.am +++ b/Makefile.am @@ -2,7 +2,7 @@ AUTOMAKE_OPTIONS = gnu -SUBDIRS = m4 src doc distro +SUBDIRS = src doc distro ACLOCAL_AMFLAGS = -I m4 @@ -10,3 +10,6 @@ EXTRA_DIST = COPYING.README README.android ChangeLog: git log > ChangeLog + +astyle: + astyle --options=.astylerc -nQ src/*.[ch] src/*/*.[ch] diff --git a/Makefile.in b/Makefile.in index 8b27d79..48d1034 100644 --- a/Makefile.in +++ b/Makefile.in @@ -239,7 +239,6 @@ LDFLAGS = @LDFLAGS@ LIBOBJS = @LIBOBJS@ LIBS = @LIBS@ LTLIBOBJS = @LTLIBOBJS@ -MAINT = @MAINT@ MAKEINFO = @MAKEINFO@ MKDIR_P = @MKDIR_P@ OBJEXT = @OBJEXT@ @@ -311,7 +310,7 @@ top_build_prefix = @top_build_prefix@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ AUTOMAKE_OPTIONS = gnu -SUBDIRS = m4 src doc distro +SUBDIRS = src doc distro ACLOCAL_AMFLAGS = -I m4 EXTRA_DIST = COPYING.README README.android all: config.h @@ -320,7 +319,7 @@ all: config.h .SUFFIXES: am--refresh: Makefile @: -$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps) +$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps) @for dep in $?; do \ case '$(am__configure_deps)' in \ *$$dep*) \ @@ -346,9 +345,9 @@ Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) $(SHELL) ./config.status --recheck -$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) +$(top_srcdir)/configure: $(am__configure_deps) $(am__cd) $(srcdir) && $(AUTOCONF) -$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps) +$(ACLOCAL_M4): $(am__aclocal_m4_deps) $(am__cd) $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS) $(am__aclocal_m4_deps): @@ -359,7 +358,7 @@ config.h: stamp-h1 stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status @rm -f stamp-h1 cd $(top_builddir) && $(SHELL) ./config.status config.h -$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) +$(srcdir)/config.h.in: $(am__configure_deps) ($(am__cd) $(top_srcdir) && $(AUTOHEADER)) rm -f stamp-h1 touch $@ @@ -795,6 +794,9 @@ uninstall-am: ChangeLog: git log > ChangeLog +astyle: + astyle --options=.astylerc -nQ src/*.[ch] src/*/*.[ch] + # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: diff --git a/NEWS b/NEWS index ff5c3be..11c61e9 100644 --- a/NEWS +++ b/NEWS @@ -1,3 +1,12 @@ +Version 1.0.33 November 4 2017 + + * Allow compilation from a build directory. + * Source code cleanups. + * Fix some options specified on the command line not surviving a HUP signal. + * Handle tun/tap device returning EPERM or EBUSY. + * Disable PMTUDiscovery when TCPOnly is used. + * Support the --runstatedir option of the autoconf 2.70. + Version 1.0.32 September 2 2017 * Fix segmentation fault when using Cipher = none. diff --git a/README b/README index 46f21c7..3fc0ee9 100644 --- a/README +++ b/README @@ -1,4 +1,4 @@ -This is the README file for tinc version 1.0.32. Installation +This is the README file for tinc version 1.0.33. Installation instructions may be found in the INSTALL file. tinc is Copyright (C) 1998-2017 by: diff --git a/THANKS b/THANKS index 742d6b5..ddf4d89 100644 --- a/THANKS +++ b/THANKS @@ -1,25 +1,36 @@ We would like to thank the following people for their contributions to tinc: * Alexander Reil and Gemeinde Berg +* Alexander Ried * Alexis Hildebrandt * Allesandro Gatti * Andreas van Cranenburgh * Anthony G. Basile -* Armin Fisslthaler * Armijn Hemel +* Armin Fisslthaler +* Aron Cowan +* Ashish Bajaj * Baptiste Jonglez * Borg * Brandon Black +* Cheng LI * Cris van Pelt * Darius Jahandarie +* Dato Simó * David Pflug * Delf Eldkraft +* Dennis Joachimsthaler * dnk * Élie Bouttier * Enrique Zanardi +* Erik Tews +* Etienne Dechamps * Florent Clairambault +* Florian Forster +* Florian Klink * Florian Weik * Flynn Marquardt +* Franz Pletz * Gary Kessler and Claudia Gonzalez * Grzegorz Dymarek * Gusariev Oleksandr @@ -43,6 +54,7 @@ We would like to thank the following people for their contributions to tinc: * Loïc Dachary * Loïc Grenié * Lubomír Bulej +* luckyhacky * LunarShaddow * Mads Kiilerich * Marc A. Lehmann @@ -52,6 +64,7 @@ We would like to thank the following people for their contributions to tinc: * Martin Kihlgren * Martin Schobert * Martin Schürrer +* Martin Weinelt * Matias Carrasco * Max Rijevski * Menno Smits @@ -59,14 +72,21 @@ We would like to thank the following people for their contributions to tinc: * Michael Tokarev * Miles Nordin * Nathan Stratton Treadway +* Murat Donmez * Nick Hibma * Nick Patavalis * Paul Littlefield * Philipp Babel +* Pierre Emeriaud +* Pierre-Olivier Mercier +* Rafael Sadowski +* Rafał Leśniak * Rhosyn Celyn * Robert van der Meulen * Rumko +* Ryan Miller * Sam Bryan +* Samuel Thibault * Saverio Proto * Scott Lamb * Steffan Karger @@ -82,12 +102,16 @@ We would like to thank the following people for their contributions to tinc: * Ulrich Seifert * Vil Brekin * Vittorio Gambaletta +* Wendy Willard * Wessel Dankers +* William A. Kennington III * William McArthur * Wouter van Heyst +* xentec * 戴 鸣 And everyone we forgot (if we did, please let us know). Thank you! -Ivo Timmermans -Guus Sliepen +--- +Ivo Timmermans, +Guus Sliepen. diff --git a/aclocal.m4 b/aclocal.m4 index a52ae51..0192751 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -921,42 +921,6 @@ fi rmdir .tst 2>/dev/null AC_SUBST([am__leading_dot])]) -# Add --enable-maintainer-mode option to configure. -*- Autoconf -*- -# From Jim Meyering - -# Copyright (C) 1996-2017 Free Software Foundation, Inc. -# -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# AM_MAINTAINER_MODE([DEFAULT-MODE]) -# ---------------------------------- -# Control maintainer-specific portions of Makefiles. -# Default is to disable them, unless 'enable' is passed literally. -# For symmetry, 'disable' may be passed as well. Anyway, the user -# can override the default with the --enable/--disable switch. -AC_DEFUN([AM_MAINTAINER_MODE], -[m4_case(m4_default([$1], [disable]), - [enable], [m4_define([am_maintainer_other], [disable])], - [disable], [m4_define([am_maintainer_other], [enable])], - [m4_define([am_maintainer_other], [enable]) - m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])]) -AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) - dnl maintainer-mode's default is 'disable' unless 'enable' is passed - AC_ARG_ENABLE([maintainer-mode], - [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode], - am_maintainer_other[ make rules and dependencies not useful - (and sometimes confusing) to the casual installer])], - [USE_MAINTAINER_MODE=$enableval], - [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes])) - AC_MSG_RESULT([$USE_MAINTAINER_MODE]) - AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes]) - MAINT=$MAINTAINER_MODE_TRUE - AC_SUBST([MAINT])dnl -] -) - # Check to see how 'make' treats includes. -*- Autoconf -*- # Copyright (C) 2001-2017 Free Software Foundation, Inc. diff --git a/config.h.in b/config.h.in index cc819b3..cc68348 100644 --- a/config.h.in +++ b/config.h.in @@ -73,9 +73,6 @@ /* DragonFly */ #undef HAVE_DRAGONFLY -/* Define to 1 if you have the `ERR_remove_state' function. */ -#undef HAVE_ERR_REMOVE_STATE - /* Define to 1 if you have the `EVP_CIPHER_CTX_new' function. */ #undef HAVE_EVP_CIPHER_CTX_NEW @@ -97,9 +94,6 @@ /* FreeBSD */ #undef HAVE_FREEBSD -/* Define to 1 if you have the `ftime' function. */ -#undef HAVE_FTIME - /* Define to 1 if you have the header file. */ #undef HAVE_GETOPT_H @@ -109,9 +103,6 @@ /* Define to 1 if you have the `gettimeofday' function. */ #undef HAVE_GETTIMEOFDAY -/* Define to 1 if you have the `get_current_dir_name' function. */ -#undef HAVE_GET_CURRENT_DIR_NAME - /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H @@ -247,9 +238,6 @@ /* Define to 1 if you have the `putenv' function. */ #undef HAVE_PUTENV -/* Define to 1 if you have the `random' function. */ -#undef HAVE_RANDOM - /* Define to 1 if you have the `RAND_bytes' function. */ #undef HAVE_RAND_BYTES @@ -259,30 +247,18 @@ /* Define to 1 if you have the `RSA_set0_key' function. */ #undef HAVE_RSA_SET0_KEY -/* Define to 1 if you have the `select' function. */ -#undef HAVE_SELECT - /* Define to 1 if the system has the type `socklen_t'. */ #undef HAVE_SOCKLEN_T /* Solaris/SunOS */ #undef HAVE_SOLARIS -/* Define to 1 if you have the header file. */ -#undef HAVE_STDBOOL_H - /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H -/* Define to 1 if you have the `strdup' function. */ -#undef HAVE_STRDUP - -/* Define to 1 if you have the `strerror' function. */ -#undef HAVE_STRERROR - /* Define to 1 if you have the header file. */ #undef HAVE_STRINGS_H @@ -292,9 +268,6 @@ /* Define to 1 if you have the `strsignal' function. */ #undef HAVE_STRSIGNAL -/* Define to 1 if you have the `strtol' function. */ -#undef HAVE_STRTOL - /* Define to 1 if the system has the type `struct addrinfo'. */ #undef HAVE_STRUCT_ADDRINFO @@ -373,9 +346,6 @@ /* Define to 1 if you have the header file. */ #undef HAVE_SYS_WAIT_H -/* Define to 1 if you have the header file. */ -#undef HAVE_TIME_H - /* Define to 1 if you have the header file. */ #undef HAVE_UNISTD_H @@ -388,9 +358,6 @@ /* Define to 1 if you have the `vsyslog' function. */ #undef HAVE_VSYSLOG -/* Define to 1 if you have the `writev' function. */ -#undef HAVE_WRITEV - /* have zlib compression support */ #undef HAVE_ZLIB @@ -427,12 +394,6 @@ /* Define to 1 if you have the ANSI C header files. */ #undef STDC_HEADERS -/* Define to 1 if you can safely include both and . */ -#undef TIME_WITH_SYS_TIME - -/* Define to 1 if your declares `struct tm'. */ -#undef TM_IN_SYS_TIME - /* Enable extensions on AIX 3, Interix. */ #ifndef _ALL_SOURCE # undef _ALL_SOURCE @@ -477,15 +438,5 @@ /* Defined if the __malloc__ attribute is not supported. */ #undef __malloc__ -/* Define to empty if `const' does not conform to ANSI C. */ -#undef const - /* Define to `int' if does not define. */ #undef pid_t - -/* Define to `unsigned int' if does not define. */ -#undef size_t - -/* Define to empty if the keyword `volatile' does not work. Warning: valid - code using `volatile' can become incorrect without. Disable with care. */ -#undef volatile diff --git a/configure b/configure index be44f56..4bcb046 100755 --- a/configure +++ b/configure @@ -1,6 +1,6 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.69 for tinc 1.0.32. +# Generated by GNU Autoconf 2.69 for tinc 1.0.33. # # # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. @@ -577,8 +577,8 @@ MAKEFLAGS= # Identity of this package. PACKAGE_NAME='tinc' PACKAGE_TARNAME='tinc' -PACKAGE_VERSION='1.0.32' -PACKAGE_STRING='tinc 1.0.32' +PACKAGE_VERSION='1.0.33' +PACKAGE_STRING='tinc 1.0.33' PACKAGE_BUGREPORT='' PACKAGE_URL='' @@ -675,9 +675,6 @@ CPPFLAGS LDFLAGS CFLAGS CC -MAINT -MAINTAINER_MODE_FALSE -MAINTAINER_MODE_TRUE AM_BACKSLASH AM_DEFAULT_VERBOSITY AM_DEFAULT_V @@ -748,7 +745,6 @@ ac_subst_files='' ac_user_opts=' enable_option_checking enable_silent_rules -enable_maintainer_mode enable_dependency_tracking enable_uml enable_vde @@ -1331,7 +1327,7 @@ if test "$ac_init_help" = "long"; then # Omit some internal or obsolete options to make the list less imposing. # This message is too long to be a string in the A/UX 3.1 sh. cat <<_ACEOF -\`configure' configures tinc 1.0.32 to adapt to many kinds of systems. +\`configure' configures tinc 1.0.33 to adapt to many kinds of systems. Usage: $0 [OPTION]... [VAR=VALUE]... @@ -1402,7 +1398,7 @@ fi if test -n "$ac_init_help"; then case $ac_init_help in - short | recursive ) echo "Configuration of tinc 1.0.32:";; + short | recursive ) echo "Configuration of tinc 1.0.33:";; esac cat <<\_ACEOF @@ -1412,9 +1408,6 @@ Optional Features: --enable-FEATURE[=ARG] include FEATURE [ARG=yes] --enable-silent-rules less verbose build output (undo: "make V=1") --disable-silent-rules verbose build output (undo: "make V=0") - --enable-maintainer-mode - enable make rules and dependencies not useful (and - sometimes confusing) to the casual installer --enable-dependency-tracking do not reject slow dependency extractors --disable-dependency-tracking @@ -1528,7 +1521,7 @@ fi test -n "$ac_init_help" && exit $ac_status if $ac_init_version; then cat <<\_ACEOF -tinc configure 1.0.32 +tinc configure 1.0.33 generated by GNU Autoconf 2.69 Copyright (C) 2012 Free Software Foundation, Inc. @@ -1993,7 +1986,7 @@ cat >config.log <<_ACEOF This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. -It was created by tinc $as_me 1.0.32, which was +It was created by tinc $as_me 1.0.33, which was generated by GNU Autoconf 2.69. Invocation command line was $ $0 $@ @@ -2857,7 +2850,7 @@ fi # Define the identity of the package. PACKAGE='tinc' - VERSION='1.0.32' + VERSION='1.0.33' cat >>confdefs.h <<_ACEOF @@ -2953,28 +2946,6 @@ fi ac_config_headers="$ac_config_headers config.h" -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5 -$as_echo_n "checking whether to enable maintainer-specific portions of Makefiles... " >&6; } - # Check whether --enable-maintainer-mode was given. -if test "${enable_maintainer_mode+set}" = set; then : - enableval=$enable_maintainer_mode; USE_MAINTAINER_MODE=$enableval -else - USE_MAINTAINER_MODE=no -fi - - { $as_echo "$as_me:${as_lineno-$LINENO}: result: $USE_MAINTAINER_MODE" >&5 -$as_echo "$USE_MAINTAINER_MODE" >&6; } - if test $USE_MAINTAINER_MODE = yes; then - MAINTAINER_MODE_TRUE= - MAINTAINER_MODE_FALSE='#' -else - MAINTAINER_MODE_TRUE='#' - MAINTAINER_MODE_FALSE= -fi - - MAINT=$MAINTAINER_MODE_TRUE - - # Check whether --enable-silent-rules was given. if test "${enable_silent_rules+set}" = set; then : enableval=$enable_silent_rules; @@ -5786,119 +5757,7 @@ fi; -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 -$as_echo_n "checking for ANSI C header files... " >&6; } -if ${ac_cv_header_stdc+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include -#include -#include -#include - -int -main () -{ - - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - ac_cv_header_stdc=yes -else - ac_cv_header_stdc=no -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - -if test $ac_cv_header_stdc = yes; then - # SunOS 4.x string.h does not declare mem*, contrary to ANSI. - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include - -_ACEOF -if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | - $EGREP "memchr" >/dev/null 2>&1; then : - -else - ac_cv_header_stdc=no -fi -rm -f conftest* - -fi - -if test $ac_cv_header_stdc = yes; then - # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include - -_ACEOF -if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | - $EGREP "free" >/dev/null 2>&1; then : - -else - ac_cv_header_stdc=no -fi -rm -f conftest* - -fi - -if test $ac_cv_header_stdc = yes; then - # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. - if test "$cross_compiling" = yes; then : - : -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include -#include -#if ((' ' & 0x0FF) == 0x020) -# define ISLOWER(c) ('a' <= (c) && (c) <= 'z') -# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) -#else -# define ISLOWER(c) \ - (('a' <= (c) && (c) <= 'i') \ - || ('j' <= (c) && (c) <= 'r') \ - || ('s' <= (c) && (c) <= 'z')) -# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) -#endif - -#define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) -int -main () -{ - int i; - for (i = 0; i < 256; i++) - if (XOR (islower (i), ISLOWER (i)) - || toupper (i) != TOUPPER (i)) - return 2; - return 0; -} -_ACEOF -if ac_fn_c_try_run "$LINENO"; then : - -else - ac_cv_header_stdc=no -fi -rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ - conftest.$ac_objext conftest.beam conftest.$ac_ext -fi - -fi -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5 -$as_echo "$ac_cv_header_stdc" >&6; } -if test $ac_cv_header_stdc = yes; then - -$as_echo "#define STDC_HEADERS 1" >>confdefs.h - -fi - -for ac_header in stdbool.h syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h arpa/nameser.h dirent.h getopt.h +for ac_header in syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h arpa/nameser.h dirent.h getopt.h do : as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" @@ -5914,7 +5773,7 @@ done for ac_header in net/if.h net/if_types.h linux/if_tun.h net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h do : as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` -ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#include \"src/have.h\" +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#include \"$srcdir/src/have.h\" " if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : @@ -5929,7 +5788,7 @@ done for ac_header in netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h do : as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` -ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#include \"src/have.h\" +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#include \"$srcdir/src/have.h\" " if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : @@ -5944,7 +5803,7 @@ done for ac_header in netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h do : as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` -ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#include \"src/have.h\" +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#include \"$srcdir/src/have.h\" " if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : @@ -5957,121 +5816,6 @@ fi done -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5 -$as_echo_n "checking for an ANSI C-conforming const... " >&6; } -if ${ac_cv_c_const+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ - -int -main () -{ - -#ifndef __cplusplus - /* Ultrix mips cc rejects this sort of thing. */ - typedef int charset[2]; - const charset cs = { 0, 0 }; - /* SunOS 4.1.1 cc rejects this. */ - char const *const *pcpcc; - char **ppc; - /* NEC SVR4.0.2 mips cc rejects this. */ - struct point {int x, y;}; - static struct point const zero = {0,0}; - /* AIX XL C 1.02.0.0 rejects this. - It does not let you subtract one const X* pointer from another in - an arm of an if-expression whose if-part is not a constant - expression */ - const char *g = "string"; - pcpcc = &g + (g ? g-g : 0); - /* HPUX 7.0 cc rejects these. */ - ++pcpcc; - ppc = (char**) pcpcc; - pcpcc = (char const *const *) ppc; - { /* SCO 3.2v4 cc rejects this sort of thing. */ - char tx; - char *t = &tx; - char const *s = 0 ? (char *) 0 : (char const *) 0; - - *t++ = 0; - if (s) return 0; - } - { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */ - int x[] = {25, 17}; - const int *foo = &x[0]; - ++foo; - } - { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */ - typedef const int *iptr; - iptr p = 0; - ++p; - } - { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying - "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */ - struct s { int j; const int *ap[3]; } bx; - struct s *b = &bx; b->j = 5; - } - { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */ - const int foo = 10; - if (!foo) return 0; - } - return !cs[0] && !zero.x; -#endif - - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - ac_cv_c_const=yes -else - ac_cv_c_const=no -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5 -$as_echo "$ac_cv_c_const" >&6; } -if test $ac_cv_c_const = no; then - -$as_echo "#define const /**/" >>confdefs.h - -fi - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working volatile" >&5 -$as_echo_n "checking for working volatile... " >&6; } -if ${ac_cv_c_volatile+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ - -int -main () -{ - -volatile int x; -int * volatile y = (int *) 0; -return !x && !y; - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - ac_cv_c_volatile=yes -else - ac_cv_c_volatile=no -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_volatile" >&5 -$as_echo "$ac_cv_c_volatile" >&6; } -if test $ac_cv_c_volatile = no; then - -$as_echo "#define volatile /**/" >>confdefs.h - -fi - ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default" if test "x$ac_cv_type_pid_t" = xyes; then : @@ -6081,87 +5825,6 @@ cat >>confdefs.h <<_ACEOF #define pid_t int _ACEOF -fi - -ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default" -if test "x$ac_cv_type_size_t" = xyes; then : - -else - -cat >>confdefs.h <<_ACEOF -#define size_t unsigned int -_ACEOF - -fi - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether time.h and sys/time.h may both be included" >&5 -$as_echo_n "checking whether time.h and sys/time.h may both be included... " >&6; } -if ${ac_cv_header_time+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include -#include -#include - -int -main () -{ -if ((struct tm *) 0) -return 0; - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - ac_cv_header_time=yes -else - ac_cv_header_time=no -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_time" >&5 -$as_echo "$ac_cv_header_time" >&6; } -if test $ac_cv_header_time = yes; then - -$as_echo "#define TIME_WITH_SYS_TIME 1" >>confdefs.h - -fi - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether struct tm is in sys/time.h or time.h" >&5 -$as_echo_n "checking whether struct tm is in sys/time.h or time.h... " >&6; } -if ${ac_cv_struct_tm+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include -#include - -int -main () -{ -struct tm tm; - int *p = &tm.tm_sec; - return !p; - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - ac_cv_struct_tm=time.h -else - ac_cv_struct_tm=sys/time.h -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_tm" >&5 -$as_echo "$ac_cv_struct_tm" >&6; } -if test $ac_cv_struct_tm = sys/time.h; then - -$as_echo "#define TM_IN_SYS_TIME 1" >>confdefs.h - fi @@ -6200,7 +5863,7 @@ $as_echo "#define __malloc__ /**/" >>confdefs.h fi -ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_socklen_t" = xyes; then : @@ -6211,7 +5874,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct ether_header" "ac_cv_type_struct_ether_header" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct ether_header" "ac_cv_type_struct_ether_header" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_ether_header" = xyes; then : @@ -6222,7 +5885,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct arphdr" "ac_cv_type_struct_arphdr" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct arphdr" "ac_cv_type_struct_arphdr" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_arphdr" = xyes; then : @@ -6233,7 +5896,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct ether_arp" "ac_cv_type_struct_ether_arp" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct ether_arp" "ac_cv_type_struct_ether_arp" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_ether_arp" = xyes; then : @@ -6244,7 +5907,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct in_addr" "ac_cv_type_struct_in_addr" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct in_addr" "ac_cv_type_struct_in_addr" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_in_addr" = xyes; then : @@ -6255,7 +5918,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct addrinfo" "ac_cv_type_struct_addrinfo" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct addrinfo" "ac_cv_type_struct_addrinfo" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_addrinfo" = xyes; then : @@ -6266,7 +5929,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct ip" "ac_cv_type_struct_ip" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct ip" "ac_cv_type_struct_ip" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_ip" = xyes; then : @@ -6277,7 +5940,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct icmp" "ac_cv_type_struct_icmp" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct icmp" "ac_cv_type_struct_icmp" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_icmp" = xyes; then : @@ -6288,7 +5951,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct in6_addr" "ac_cv_type_struct_in6_addr" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct in6_addr" "ac_cv_type_struct_in6_addr" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_in6_addr" = xyes; then : @@ -6299,7 +5962,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct sockaddr_in6" "ac_cv_type_struct_sockaddr_in6" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct sockaddr_in6" "ac_cv_type_struct_sockaddr_in6" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_sockaddr_in6" = xyes; then : @@ -6310,7 +5973,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct ip6_hdr" "ac_cv_type_struct_ip6_hdr" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct ip6_hdr" "ac_cv_type_struct_ip6_hdr" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_ip6_hdr" = xyes; then : @@ -6321,7 +5984,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct icmp6_hdr" "ac_cv_type_struct_icmp6_hdr" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct icmp6_hdr" "ac_cv_type_struct_icmp6_hdr" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_icmp6_hdr" = xyes; then : @@ -6332,7 +5995,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct nd_neighbor_solicit" "ac_cv_type_struct_nd_neighbor_solicit" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct nd_neighbor_solicit" "ac_cv_type_struct_nd_neighbor_solicit" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_nd_neighbor_solicit" = xyes; then : @@ -6343,7 +6006,7 @@ _ACEOF fi -ac_fn_c_check_type "$LINENO" "struct nd_opt_hdr" "ac_cv_type_struct_nd_opt_hdr" "#include \"src/have.h\" +ac_fn_c_check_type "$LINENO" "struct nd_opt_hdr" "ac_cv_type_struct_nd_opt_hdr" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_type_struct_nd_opt_hdr" = xyes; then : @@ -6389,7 +6052,7 @@ cat >>confdefs.h <<_ACEOF _ACEOF -for ac_func in asprintf daemon fchmod flock ftime fork get_current_dir_name gettimeofday mlockall pselect putenv random select strdup strerror strsignal strtol system unsetenv usleep vsyslog writev devname fdevname +for ac_func in asprintf daemon fchmod flock fork gettimeofday mlockall pselect putenv strsignal system unsetenv usleep vsyslog devname fdevname do : as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" @@ -6528,7 +6191,7 @@ fi fi -ac_fn_c_check_decl "$LINENO" "freeaddrinfo" "ac_cv_have_decl_freeaddrinfo" "#include \"src/have.h\" +ac_fn_c_check_decl "$LINENO" "freeaddrinfo" "ac_cv_have_decl_freeaddrinfo" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_have_decl_freeaddrinfo" = xyes; then : @@ -6540,7 +6203,7 @@ fi cat >>confdefs.h <<_ACEOF #define HAVE_DECL_FREEADDRINFO $ac_have_decl _ACEOF -ac_fn_c_check_decl "$LINENO" "gai_strerror" "ac_cv_have_decl_gai_strerror" "#include \"src/have.h\" +ac_fn_c_check_decl "$LINENO" "gai_strerror" "ac_cv_have_decl_gai_strerror" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_have_decl_gai_strerror" = xyes; then : @@ -6552,7 +6215,7 @@ fi cat >>confdefs.h <<_ACEOF #define HAVE_DECL_GAI_STRERROR $ac_have_decl _ACEOF -ac_fn_c_check_decl "$LINENO" "getaddrinfo" "ac_cv_have_decl_getaddrinfo" "#include \"src/have.h\" +ac_fn_c_check_decl "$LINENO" "getaddrinfo" "ac_cv_have_decl_getaddrinfo" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_have_decl_getaddrinfo" = xyes; then : @@ -6564,7 +6227,7 @@ fi cat >>confdefs.h <<_ACEOF #define HAVE_DECL_GETADDRINFO $ac_have_decl _ACEOF -ac_fn_c_check_decl "$LINENO" "getnameinfo" "ac_cv_have_decl_getnameinfo" "#include \"src/have.h\" +ac_fn_c_check_decl "$LINENO" "getnameinfo" "ac_cv_have_decl_getnameinfo" "#include \"$srcdir/src/have.h\" " if test "x$ac_cv_have_decl_getnameinfo" = xyes; then : @@ -7204,7 +6867,7 @@ else fi - for ac_func in BN_GENCB_new ERR_remove_state RSA_set0_key + for ac_func in BN_GENCB_new RSA_set0_key do : as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" @@ -7230,7 +6893,12 @@ fi fi -ac_config_files="$ac_config_files Makefile src/Makefile doc/Makefile m4/Makefile distro/Makefile" +if test "x$runstatedir" = "x"; then + runstatedir='${localstatedir}/run' + +fi + +ac_config_files="$ac_config_files Makefile src/Makefile doc/Makefile distro/Makefile" cat >confcache <<\_ACEOF @@ -7358,10 +7026,6 @@ else am__EXEEXT_FALSE= fi -if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then - as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined. -Usually this means the macro was only invoked conditionally." "$LINENO" 5 -fi if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then as_fn_error $? "conditional \"AMDEP\" was never defined. Usually this means the macro was only invoked conditionally." "$LINENO" 5 @@ -7807,7 +7471,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 # report actual input values of CONFIG_FILES etc. instead of their # values after options handling. ac_log=" -This file was extended by tinc $as_me 1.0.32, which was +This file was extended by tinc $as_me 1.0.33, which was generated by GNU Autoconf 2.69. Invocation command line was CONFIG_FILES = $CONFIG_FILES @@ -7873,7 +7537,7 @@ _ACEOF cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`" ac_cs_version="\\ -tinc config.status 1.0.32 +tinc config.status 1.0.33 configured by $0, generated by GNU Autoconf 2.69, with options \\"\$ac_cs_config\\" @@ -8007,7 +7671,6 @@ do "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;; "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;; "doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;; - "m4/Makefile") CONFIG_FILES="$CONFIG_FILES m4/Makefile" ;; "distro/Makefile") CONFIG_FILES="$CONFIG_FILES distro/Makefile" ;; *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;; diff --git a/configure.ac b/configure.ac index 5500291..85e51e9 100644 --- a/configure.ac +++ b/configure.ac @@ -1,11 +1,11 @@ dnl Process this file with autoconf to produce a configure script. AC_PREREQ(2.61) -AC_INIT([tinc], [1.0.32]) +AC_INIT([tinc], [1.0.33]) AC_CONFIG_SRCDIR([src/tincd.c]) -AM_INIT_AUTOMAKE([1.11 check-news std-options subdir-objects nostdinc silent-rules -Wall]) +AM_INIT_AUTOMAKE([1.11 check-news std-options subdir-objects nostdinc silent-rules -Wall info-in-builddir]) AC_CONFIG_HEADERS([config.h]) -AM_MAINTAINER_MODE +AC_CONFIG_MACRO_DIR([m4]) AM_SILENT_RULES([yes]) # Enable GNU extensions. @@ -179,36 +179,30 @@ dnl Checks for libraries. dnl Checks for header files. dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies. -AC_HEADER_STDC -AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h arpa/nameser.h dirent.h getopt.h]) +AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h arpa/nameser.h dirent.h getopt.h]) AC_CHECK_HEADERS([net/if.h net/if_types.h linux/if_tun.h net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h], - [], [], [#include "src/have.h"] + [], [], [#include "$srcdir/src/have.h"] ) AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h], - [], [], [#include "src/have.h"] + [], [], [#include "$srcdir/src/have.h"] ) AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h], - [], [], [#include "src/have.h"] + [], [], [#include "$srcdir/src/have.h"] ) dnl Checks for typedefs, structures, and compiler characteristics. -AC_C_CONST -AC_C_VOLATILE AC_TYPE_PID_T -AC_TYPE_SIZE_T -AC_HEADER_TIME -AC_STRUCT_TM tinc_ATTRIBUTE(__malloc__) AC_CHECK_TYPES([socklen_t, struct ether_header, struct arphdr, struct ether_arp, struct in_addr, struct addrinfo, struct ip, struct icmp, struct in6_addr, struct sockaddr_in6, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , , - [#include "src/have.h"] + [#include "$srcdir/src/have.h"] ) dnl Checks for library functions. AC_TYPE_SIGNAL -AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork get_current_dir_name gettimeofday mlockall pselect putenv random select strdup strerror strsignal strtol system unsetenv usleep vsyslog writev devname fdevname], - [], [], [#include "src/have.h"] +AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall pselect putenv strsignal system unsetenv usleep vsyslog devname fdevname], + [], [], [#include "$srcdir/src/have.h"] ) AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false]) @@ -224,7 +218,7 @@ AC_CHECK_FUNC(gethostbyname, [], [ ]) AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo], - [], [], [#include "src/have.h"] + [], [], [#include "$srcdir/src/have.h"] ) AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [ @@ -248,6 +242,11 @@ AC_ARG_ENABLE(jumbograms, ] ) -AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile m4/Makefile distro/Makefile]) +dnl Ensure runstatedir is set if we are using a version of autoconf that does not suppport it +if test "x$runstatedir" = "x"; then + AC_SUBST([runstatedir], ['${localstatedir}/run']) +fi + +AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile distro/Makefile]) AC_OUTPUT diff --git a/debian/changelog b/debian/changelog index 2d56df8..6a3296e 100644 --- a/debian/changelog +++ b/debian/changelog @@ -1,3 +1,11 @@ +tinc (1.0.33-1) unstable; urgency=medium + + * New upstream release. + * Test for /etc/default/tinc before trying to source it. Closes: #777262 + * Use --runstatedir=/run. + + -- Guus Sliepen Sat, 04 Nov 2017 16:22:06 +0100 + tinc (1.0.32-1) unstable; urgency=medium * New upstream release. diff --git a/debian/control b/debian/control index 2d56ff1..4564c8f 100644 --- a/debian/control +++ b/debian/control @@ -2,8 +2,8 @@ Source: tinc Section: net Priority: optional Maintainer: Guus Sliepen -Standards-Version: 4.0.0 -Build-Depends: libssl-dev, debhelper (>= 10), gettext, texinfo, zlib1g-dev, liblzo2-dev, libvdeplug-dev, dh-systemd +Standards-Version: 4.1.1 +Build-Depends: libssl-dev, debhelper (>= 10), gettext, texinfo, zlib1g-dev, liblzo2-dev, libvdeplug-dev Homepage: http://www.tinc-vpn.org/ Package: tinc diff --git a/debian/rules b/debian/rules index e05cf14..1876738 100755 --- a/debian/rules +++ b/debian/rules @@ -4,7 +4,7 @@ dh $@ override_dh_auto_configure: - dh_auto_configure -- --enable-uml --enable-vde --with-systemdsystemunitdir=/lib/systemd/system + dh_auto_configure -- --enable-uml --enable-vde --with-systemdsystemunitdir=/lib/systemd/system --runstatedir=/run override_dh_auto_install: dh_auto_install -- install-html diff --git a/debian/tinc.if-pre-up b/debian/tinc.if-pre-up index a0a8e08..68a3b53 100755 --- a/debian/tinc.if-pre-up +++ b/debian/tinc.if-pre-up @@ -8,7 +8,7 @@ fi # Read options from /etc/default -. /etc/default/tinc +[ -r /etc/default/tinc ] && . /etc/default/tinc # Set process limits diff --git a/distro/Makefile.in b/distro/Makefile.in index 677348f..7097efd 100644 --- a/distro/Makefile.in +++ b/distro/Makefile.in @@ -186,7 +186,6 @@ LDFLAGS = @LDFLAGS@ LIBOBJS = @LIBOBJS@ LIBS = @LIBS@ LTLIBOBJS = @LTLIBOBJS@ -MAINT = @MAINT@ MAKEINFO = @MAKEINFO@ MKDIR_P = @MKDIR_P@ OBJEXT = @OBJEXT@ @@ -268,7 +267,7 @@ EXTRA_DIST = \ all: all-am .SUFFIXES: -$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps) +$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps) @for dep in $?; do \ case '$(am__configure_deps)' in \ *$$dep*) \ @@ -292,9 +291,9 @@ Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh -$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) +$(top_srcdir)/configure: $(am__configure_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh -$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps) +$(ACLOCAL_M4): $(am__aclocal_m4_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh $(am__aclocal_m4_deps): install-systemdsystemunitDATA: $(systemdsystemunit_DATA) diff --git a/doc/Makefile.am b/doc/Makefile.am index 91b5b8d..fed46b7 100644 --- a/doc/Makefile.am +++ b/doc/Makefile.am @@ -4,23 +4,12 @@ info_TEXINFOS = tinc.texi man_MANS = tincd.8 tinc.conf.5 -EXTRA_DIST = tincinclude.texi.in tincd.8.in tinc.conf.5.in sample-config.tar.gz +EXTRA_DIST = tincinclude.texi.in tincd.8.in tinc.conf.5.in sample-config CLEANFILES = *.html tincd.8 tinc.conf.5 tincinclude.texi -# Use `ginstall' in the definition of man_MANS to avoid -# confusion with the `install' target. The install rule transforms `ginstall' -# to install before applying any user-specified name transformations. -transform = s/ginstall/install/; @program_transform_name@ - -# For additional rules usually of interest only to the maintainer, -# see GNUmakefile and Makefile.maint. - -sample-config.tar.gz: sample-config - $(AM_V_GEN)GZIP=$(GZIP_ENV) $(AMTAR) chozf sample-config.tar.gz --exclude .svn sample-config - texi2html: tinc.texi - $(AM_V_GEN)texi2html -split=chapter tinc.texi + $(AM_V_GEN)texi2html -split=chapter $< tincd.8.html: tincd.8 $(AM_V_GEN)w3mman2html $< > $@ @@ -32,15 +21,16 @@ substitute = sed \ -e s,'@PACKAGE\@',"$(PACKAGE)",g \ -e s,'@VERSION\@',"$(VERSION)",g \ -e s,'@sysconfdir\@',"$(sysconfdir)",g \ + -e s,'@runstatedir\@',"$(runstatedir)",g \ -e s,'@localstatedir\@',"$(localstatedir)",g -tincd.8: tincd.8.in - $(AM_V_GEN)$(substitute) tincd.8.in > tincd.8 +tincd.8: $(srcdir)/tincd.8.in + $(AM_V_GEN)$(substitute) $< > $@ -tinc.conf.5: tinc.conf.5.in - $(AM_V_GEN)$(substitute) tinc.conf.5.in > tinc.conf.5 +tinc.conf.5: $(srcdir)/tinc.conf.5.in + $(AM_V_GEN)$(substitute) $< > $@ + +tincinclude.texi: $(srcdir)/tincinclude.texi.in + $(AM_V_GEN)$(substitute) $< > $@ -tincinclude.texi: tincinclude.texi.in - $(AM_V_GEN)$(substitute) tincinclude.texi.in > tincinclude.texi - tinc.texi: tincinclude.texi diff --git a/doc/Makefile.in b/doc/Makefile.in index be310d4..ef86854 100644 --- a/doc/Makefile.in +++ b/doc/Makefile.in @@ -78,6 +78,7 @@ install_sh_DATA = $(install_sh) -c -m 644 install_sh_PROGRAM = $(install_sh) -c install_sh_SCRIPT = $(install_sh) -c INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) NORMAL_INSTALL = : PRE_INSTALL = : POST_INSTALL = : @@ -145,7 +146,7 @@ AM_V_texidevnull = $(am__v_texidevnull_@AM_V@) am__v_texidevnull_ = $(am__v_texidevnull_@AM_DEFAULT_V@) am__v_texidevnull_0 = > /dev/null am__v_texidevnull_1 = -INFO_DEPS = $(srcdir)/tinc.info +INFO_DEPS = tinc.info am__TEXINFO_TEX_DIR = $(srcdir) DVIS = tinc.dvi PDFS = tinc.pdf @@ -198,11 +199,6 @@ MANS = $(man_MANS) am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP) am__DIST_COMMON = $(srcdir)/Makefile.in texinfo.tex DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) - -# Use `ginstall' in the definition of man_MANS to avoid -# confusion with the `install' target. The install rule transforms `ginstall' -# to install before applying any user-specified name transformations. -transform = s/ginstall/install/; @program_transform_name@ ACLOCAL = @ACLOCAL@ AMTAR = @AMTAR@ AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@ @@ -233,7 +229,6 @@ LDFLAGS = @LDFLAGS@ LIBOBJS = @LIBOBJS@ LIBS = @LIBS@ LTLIBOBJS = @LTLIBOBJS@ -MAINT = @MAINT@ MAKEINFO = @MAKEINFO@ MKDIR_P = @MKDIR_P@ OBJEXT = @OBJEXT@ @@ -306,19 +301,20 @@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ info_TEXINFOS = tinc.texi man_MANS = tincd.8 tinc.conf.5 -EXTRA_DIST = tincinclude.texi.in tincd.8.in tinc.conf.5.in sample-config.tar.gz +EXTRA_DIST = tincinclude.texi.in tincd.8.in tinc.conf.5.in sample-config CLEANFILES = *.html tincd.8 tinc.conf.5 tincinclude.texi substitute = sed \ -e s,'@PACKAGE\@',"$(PACKAGE)",g \ -e s,'@VERSION\@',"$(VERSION)",g \ -e s,'@sysconfdir\@',"$(sysconfdir)",g \ + -e s,'@runstatedir\@',"$(runstatedir)",g \ -e s,'@localstatedir\@',"$(localstatedir)",g all: all-am .SUFFIXES: -.SUFFIXES: .dvi .html .info .pdf .ps .texi -$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps) +.SUFFIXES: .dvi .ps +$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps) @for dep in $?; do \ case '$(am__configure_deps)' in \ *$$dep*) \ @@ -342,59 +338,51 @@ Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh -$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) +$(top_srcdir)/configure: $(am__configure_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh -$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps) +$(ACLOCAL_M4): $(am__aclocal_m4_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh $(am__aclocal_m4_deps): -.texi.info: +tinc.info: tinc.texi $(AM_V_MAKEINFO)restore=: && backupdir="$(am__leading_dot)am$$$$" && \ - am__cwd=`pwd` && $(am__cd) $(srcdir) && \ rm -rf $$backupdir && mkdir $$backupdir && \ if ($(MAKEINFO) --version) >/dev/null 2>&1; then \ for f in $@ $@-[0-9] $@-[0-9][0-9] $(@:.info=).i[0-9] $(@:.info=).i[0-9][0-9]; do \ if test -f $$f; then mv $$f $$backupdir; restore=mv; else :; fi; \ done; \ else :; fi && \ - cd "$$am__cwd"; \ if $(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) \ - -o $@ $<; \ + -o $@ `test -f 'tinc.texi' || echo '$(srcdir)/'`tinc.texi; \ then \ rc=0; \ - $(am__cd) $(srcdir); \ else \ rc=$$?; \ - $(am__cd) $(srcdir) && \ $$restore $$backupdir/* `echo "./$@" | sed 's|[^/]*$$||'`; \ fi; \ rm -rf $$backupdir; exit $$rc -.texi.dvi: +tinc.dvi: tinc.texi $(AM_V_TEXI2DVI)TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \ MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir)' \ $(TEXI2DVI) $(AM_V_texinfo) --build-dir=$(@:.dvi=.t2d) -o $@ $(AM_V_texidevnull) \ - $< + `test -f 'tinc.texi' || echo '$(srcdir)/'`tinc.texi -.texi.pdf: +tinc.pdf: tinc.texi $(AM_V_TEXI2PDF)TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \ MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir)' \ $(TEXI2PDF) $(AM_V_texinfo) --build-dir=$(@:.pdf=.t2p) -o $@ $(AM_V_texidevnull) \ - $< + `test -f 'tinc.texi' || echo '$(srcdir)/'`tinc.texi -.texi.html: +tinc.html: tinc.texi $(AM_V_MAKEINFO)rm -rf $(@:.html=.htp) $(AM_V_at)if $(MAKEINFOHTML) $(AM_MAKEINFOHTMLFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) \ - -o $(@:.html=.htp) $<; \ + -o $(@:.html=.htp) `test -f 'tinc.texi' || echo '$(srcdir)/'`tinc.texi; \ then \ rm -rf $@ && mv $(@:.html=.htp) $@; \ else \ rm -rf $(@:.html=.htp); exit 1; \ fi -$(srcdir)/tinc.info: tinc.texi -tinc.dvi: tinc.texi -tinc.pdf: tinc.texi -tinc.html: tinc.texi .dvi.ps: $(AM_V_DVIPS)TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \ $(DVIPS) $(AM_V_texinfo) -o $@ $< @@ -833,14 +821,8 @@ uninstall-man: uninstall-man5 uninstall-man8 .PRECIOUS: Makefile -# For additional rules usually of interest only to the maintainer, -# see GNUmakefile and Makefile.maint. - -sample-config.tar.gz: sample-config - $(AM_V_GEN)GZIP=$(GZIP_ENV) $(AMTAR) chozf sample-config.tar.gz --exclude .svn sample-config - texi2html: tinc.texi - $(AM_V_GEN)texi2html -split=chapter tinc.texi + $(AM_V_GEN)texi2html -split=chapter $< tincd.8.html: tincd.8 $(AM_V_GEN)w3mman2html $< > $@ @@ -848,14 +830,14 @@ tincd.8.html: tincd.8 tinc.conf.5.html: tinc.conf.5 $(AM_V_GEN)w3mman2html $< > $@ -tincd.8: tincd.8.in - $(AM_V_GEN)$(substitute) tincd.8.in > tincd.8 +tincd.8: $(srcdir)/tincd.8.in + $(AM_V_GEN)$(substitute) $< > $@ -tinc.conf.5: tinc.conf.5.in - $(AM_V_GEN)$(substitute) tinc.conf.5.in > tinc.conf.5 +tinc.conf.5: $(srcdir)/tinc.conf.5.in + $(AM_V_GEN)$(substitute) $< > $@ -tincinclude.texi: tincinclude.texi.in - $(AM_V_GEN)$(substitute) tincinclude.texi.in > tincinclude.texi +tincinclude.texi: $(srcdir)/tincinclude.texi.in + $(AM_V_GEN)$(substitute) $< > $@ tinc.texi: tincinclude.texi diff --git a/doc/sample-config.tar.gz b/doc/sample-config.tar.gz deleted file mode 100644 index 093692b..0000000 Binary files a/doc/sample-config.tar.gz and /dev/null differ diff --git a/doc/sample-config/hosts/alpha b/doc/sample-config/hosts/alpha new file mode 100644 index 0000000..0f5e56a --- /dev/null +++ b/doc/sample-config/hosts/alpha @@ -0,0 +1,15 @@ +# Sample host configuration file + +# The real IP address of this tinc host. Can be used by other tinc hosts. +Address = 123.234.35.67 + +# Portnumber for incoming connections. Default is 655. +Port = 655 + +# Subnet on the virtual private network that is local for this host. +Subnet = 192.168.1.0/24 + +# The public key generated by `tincd -n example -K' is stored here +-----BEGIN RSA PUBLIC KEY----- +... +-----END RSA PUBLIC KEY----- diff --git a/doc/sample-config/hosts/beta b/doc/sample-config/hosts/beta new file mode 100644 index 0000000..6f70d4f --- /dev/null +++ b/doc/sample-config/hosts/beta @@ -0,0 +1,16 @@ +# Sample host configuration file +# This file was generated by host beta. + +# The real IP address of this tinc host. Can be used by other tinc hosts. +Address = 123.45.67.189 + +# Portnumber for incoming connections. Default is 655. +Port = 6500 + +# Subnet on the virtual private network that is local for this host. +Subnet = 192.168.2.0/24 + +# The public key generated by `tincd -n example -K' is stored here +-----BEGIN RSA PUBLIC KEY----- +... +-----END RSA PUBLIC KEY----- diff --git a/doc/sample-config/rsa_key.priv b/doc/sample-config/rsa_key.priv new file mode 100644 index 0000000..ac13536 --- /dev/null +++ b/doc/sample-config/rsa_key.priv @@ -0,0 +1 @@ +# Generate this file with `tincd -n example -K` diff --git a/doc/sample-config/tinc-down b/doc/sample-config/tinc-down new file mode 100644 index 0000000..65b049e --- /dev/null +++ b/doc/sample-config/tinc-down @@ -0,0 +1,4 @@ +#!/bin/sh +# This file closes down the tap device. + +ifconfig $INTERFACE down diff --git a/doc/sample-config/tinc-up b/doc/sample-config/tinc-up new file mode 100644 index 0000000..2d8b4d6 --- /dev/null +++ b/doc/sample-config/tinc-up @@ -0,0 +1,11 @@ +#!/bin/sh +# This file sets up the tap device. +# It gives you the freedom to do anything you want with it. +# Use the correct name for the tap device: +# The environment variable $INTERFACE is set to the right name +# on most platforms, but if it doesn't work try to set it manually. + +# Give it the right ip and netmask. Remember, the subnet of the +# tap device must be larger than that of the individual Subnets +# as defined in the host configuration file! +ifconfig $INTERFACE 192.168.1.1 netmask 255.255.0.0 diff --git a/doc/sample-config/tinc.conf b/doc/sample-config/tinc.conf new file mode 100644 index 0000000..7081764 --- /dev/null +++ b/doc/sample-config/tinc.conf @@ -0,0 +1,22 @@ +# Sample tinc configuration file + +# This is a comment. +# Spaces and tabs are eliminated. +# The = sign isn't strictly necessary any longer, though you may want +# to leave it in as it improves readability :) +# Variable names are treated case insensitive. + +# The name of this tinc host. Required. +Name = alpha + +# The internet host to connect with. +# Comment these out to make yourself a listen-only connection +# You must use the name of another tinc host. +# May be used multiple times for redundance. +ConnectTo = beta + +# The tap device tinc will use. +# /dev/tap0 for ethertap, FreeBSD or OpenBSD +# /dev/tun0 for Solaris +# /dev/net/tun for Linux tun/tap +Device = /dev/net/tun diff --git a/doc/tinc.conf.5.in b/doc/tinc.conf.5.in index 40ea1cc..cd7d1a0 100644 --- a/doc/tinc.conf.5.in +++ b/doc/tinc.conf.5.in @@ -222,7 +222,7 @@ Also note that this can cause decrypted VPN packets to be sent out on a real net Create a UNIX socket with the filename specified by .Va Device , or -.Pa @localstatedir@/run/ Ns Ar NETNAME Ns Pa .umlsocket +.Pa @runstatedir@/ Ns Ar NETNAME Ns Pa .umlsocket if not specified. .Nm tinc will wait for a User Mode Linux instance to connect to this socket. @@ -231,7 +231,7 @@ Uses the libvdeplug library to connect to a Virtual Distributed Ethernet switch, using the UNIX socket specified by .Va Device , or -.Pa @localstatedir@/run/vde.ctl +.Pa @runstatedir@/vde.ctl if not specified. .El Also, in case tinc does not seem to correctly interpret packets received from the virtual network device, diff --git a/doc/tinc.info b/doc/tinc.info index 84c0a5e..2f1a016 100644 --- a/doc/tinc.info +++ b/doc/tinc.info @@ -1,11 +1,11 @@ -This is tinc.info, produced by makeinfo version 6.4.90 from tinc.texi. +This is tinc.info, produced by makeinfo version 6.5 from tinc.texi. INFO-DIR-SECTION Networking tools START-INFO-DIR-ENTRY * tinc: (tinc). The tinc Manual. END-INFO-DIR-ENTRY -This is the info manual for tinc version 1.0.31, a Virtual Private +This is the info manual for tinc version 1.0.33, a Virtual Private Network daemon. Copyright (C) 1998-2017 Ivo Timmermans, Guus Sliepen @@ -791,13 +791,13 @@ DeviceType = (platform dependent) uml (not compiled in by default) Create a UNIX socket with the filename specified by DEVICE, or - '/var/run/NETNAME.umlsocket' if not specified. Tinc will wait - for a User Mode Linux instance to connect to this socket. + '/run/NETNAME.umlsocket' if not specified. Tinc will wait for + a User Mode Linux instance to connect to this socket. vde (not compiled in by default) Uses the libvdeplug library to connect to a Virtual Distributed Ethernet switch, using the UNIX socket specified - by DEVICE, or '/var/run/vde.ctl' if not specified. + by DEVICE, or '/run/vde.ctl' if not specified. Also, in case tinc does not seem to correctly interpret packets received from the virtual network device, it can be used to change @@ -1597,7 +1597,7 @@ command line options. '/var/log/tinc.NETNAME.log'. '--pidfile=FILE' - Write PID to FILE instead of '/var/run/tinc.NETNAME.pid'. + Write PID to FILE instead of '/run/tinc.NETNAME.pid'. '--bypass-security' Disables encryption and authentication. Only useful for debugging. @@ -1609,12 +1609,16 @@ command line options. chroot is performed after all the initialization is done, after writing pid files and opening network sockets. - Note that this option alone does not do any good without -U/-user, - below. + This option is best used in combination with the -U/-user option + described below. - Note also that tinc can't run scripts anymore (such as tinc-down or - host-up), unless it's setup to be runnable inside chroot - environment. + You will need to ensure the chroot environment contains all the + files necessary for tinc to run correctly. Most importantly, for + tinc to be able to resolve hostnames inside the chroot environment, + you must copy '/etc/resolv.conf' into the chroot directory. If you + want to be able to run scripts other than 'tinc-up' in the chroot, + you must ensure the appropriate shell is also installed in the + chroot, along with all its dependencies. '-U, --user=USER' Switch to the given USER after initialization, at the same time as @@ -2650,66 +2654,66 @@ Concept Index  Tag Table: -Node: Top809 -Node: Introduction1108 -Node: Virtual Private Networks1918 -Node: tinc3642 -Node: Supported platforms5169 -Node: Preparations5870 -Node: Configuring the kernel6126 -Node: Configuration of Linux kernels6536 -Node: Configuration of FreeBSD kernels7391 -Node: Configuration of OpenBSD kernels7856 -Node: Configuration of NetBSD kernels8213 -Node: Configuration of Solaris kernels8618 -Node: Configuration of Darwin (Mac OS X) kernels9281 -Node: Configuration of Windows10100 -Node: Libraries10640 -Node: LibreSSL/OpenSSL11049 -Node: zlib13591 -Node: lzo14623 -Node: Installation15606 -Node: Building and installing tinc16516 -Node: Darwin (Mac OS X) build environment17176 -Node: Cygwin (Windows) build environment17741 -Node: MinGW (Windows) build environment18330 -Node: System files18924 -Node: Device files19189 -Node: Other files19605 -Node: Configuration20218 -Node: Configuration introduction20529 -Node: Multiple networks21797 -Node: How connections work23223 -Node: Configuration files24445 -Node: Main configuration variables25939 -Node: Host configuration variables42195 -Node: Scripts47727 -Node: How to configure50993 -Node: Generating keypairs52251 -Node: Network interfaces52750 -Node: Example configuration54598 -Node: Running tinc59923 -Node: Runtime options60513 -Node: Signals63815 -Node: Debug levels65006 -Node: Solving problems65942 -Node: Error messages67494 -Node: Sending bug reports71503 -Node: Technical information72450 -Node: The connection72681 -Node: The UDP tunnel72993 -Node: The meta-connection76054 -Node: The meta-protocol77523 -Node: Security82540 -Node: Authentication protocol83682 -Node: Encryption of network packets88727 -Node: Security issues90103 -Node: Platform specific information91742 -Node: Interface configuration91970 -Node: Routes94441 -Node: About us96455 -Node: Contact information96630 -Node: Authors97033 -Node: Concept Index97438 +Node: Top806 +Node: Introduction1105 +Node: Virtual Private Networks1915 +Node: tinc3639 +Node: Supported platforms5166 +Node: Preparations5867 +Node: Configuring the kernel6123 +Node: Configuration of Linux kernels6533 +Node: Configuration of FreeBSD kernels7388 +Node: Configuration of OpenBSD kernels7853 +Node: Configuration of NetBSD kernels8210 +Node: Configuration of Solaris kernels8615 +Node: Configuration of Darwin (Mac OS X) kernels9278 +Node: Configuration of Windows10097 +Node: Libraries10637 +Node: LibreSSL/OpenSSL11046 +Node: zlib13588 +Node: lzo14620 +Node: Installation15603 +Node: Building and installing tinc16513 +Node: Darwin (Mac OS X) build environment17173 +Node: Cygwin (Windows) build environment17738 +Node: MinGW (Windows) build environment18327 +Node: System files18921 +Node: Device files19186 +Node: Other files19602 +Node: Configuration20215 +Node: Configuration introduction20526 +Node: Multiple networks21794 +Node: How connections work23220 +Node: Configuration files24442 +Node: Main configuration variables25936 +Node: Host configuration variables42184 +Node: Scripts47716 +Node: How to configure50982 +Node: Generating keypairs52240 +Node: Network interfaces52739 +Node: Example configuration54587 +Node: Running tinc59912 +Node: Runtime options60502 +Node: Signals64127 +Node: Debug levels65318 +Node: Solving problems66254 +Node: Error messages67806 +Node: Sending bug reports71815 +Node: Technical information72762 +Node: The connection72993 +Node: The UDP tunnel73305 +Node: The meta-connection76366 +Node: The meta-protocol77835 +Node: Security82852 +Node: Authentication protocol83994 +Node: Encryption of network packets89039 +Node: Security issues90415 +Node: Platform specific information92054 +Node: Interface configuration92282 +Node: Routes94753 +Node: About us96767 +Node: Contact information96942 +Node: Authors97345 +Node: Concept Index97750  End Tag Table diff --git a/doc/tinc.texi b/doc/tinc.texi index cdccea5..f4c866e 100644 --- a/doc/tinc.texi +++ b/doc/tinc.texi @@ -860,7 +860,7 @@ Also note that this can cause decrypted VPN packets to be sent out on a real net @cindex UML @item uml (not compiled in by default) Create a UNIX socket with the filename specified by -@var{Device}, or @file{@value{localstatedir}/run/@var{netname}.umlsocket} +@var{Device}, or @file{@value{runstatedir}/@var{netname}.umlsocket} if not specified. Tinc will wait for a User Mode Linux instance to connect to this socket. @@ -868,7 +868,7 @@ Tinc will wait for a User Mode Linux instance to connect to this socket. @item vde (not compiled in by default) Uses the libvdeplug library to connect to a Virtual Distributed Ethernet switch, using the UNIX socket specified by -@var{Device}, or @file{@value{localstatedir}/run/vde.ctl} +@var{Device}, or @file{@value{runstatedir}/vde.ctl} if not specified. @end table @@ -1730,7 +1730,7 @@ Write log entries to a file instead of to the system logging facility. If @var{file} is omitted, the default is @file{@value{localstatedir}/log/tinc.@var{netname}.log}. @item --pidfile=@var{file} -Write PID to @var{file} instead of @file{@value{localstatedir}/run/tinc.@var{netname}.pid}. +Write PID to @var{file} instead of @file{@value{runstatedir}/tinc.@var{netname}.pid}. @item --bypass-security Disables encryption and authentication. @@ -1743,10 +1743,14 @@ located (@file{@value{sysconfdir}/tinc/@var{netname}/} as determined by The chroot is performed after all the initialization is done, after writing pid files and opening network sockets. -Note that this option alone does not do any good without -U/--user, below. +This option is best used in combination with the -U/--user option described below. -Note also that tinc can't run scripts anymore (such as tinc-down or host-up), -unless it's setup to be runnable inside chroot environment. +You will need to ensure the chroot environment contains all the files necessary +for tinc to run correctly. +Most importantly, for tinc to be able to resolve hostnames inside the chroot environment, +you must copy @file{/etc/resolv.conf} into the chroot directory. +If you want to be able to run scripts other than @file{tinc-up} in the chroot, +you must ensure the appropriate shell is also installed in the chroot, along with all its dependencies. @item -U, --user=@var{user} Switch to the given @var{user} after initialization, at the same time as diff --git a/doc/tincd.8.in b/doc/tincd.8.in index 195869b..bdccf9d 100644 --- a/doc/tincd.8.in +++ b/doc/tincd.8.in @@ -109,7 +109,7 @@ is omitted, the default is Write PID to .Ar FILE instead of -.Pa @localstatedir@/run/tinc. Ns Ar NETNAME Ns Pa .pid. +.Pa @runstatedir@/tinc. Ns Ar NETNAME Ns Pa .pid. Under Windows this option will be ignored. .It Fl -bypass-security Disables encryption and authentication of the meta protocol. @@ -190,7 +190,7 @@ This will log all network traffic over the virtual private network. Directory containing the configuration files tinc uses. For more information, see .Xr tinc.conf 5 . -.It Pa @localstatedir@/run/tinc. Ns Ar NETNAME Ns Pa .pid +.It Pa @runstatedir@/tinc. Ns Ar NETNAME Ns Pa .pid The PID of the currently running .Nm is stored in this file. diff --git a/doc/tincinclude.texi.in b/doc/tincinclude.texi.in index da4adc5..01fee35 100644 --- a/doc/tincinclude.texi.in +++ b/doc/tincinclude.texi.in @@ -2,3 +2,4 @@ @set PACKAGE @PACKAGE@ @set sysconfdir @sysconfdir@ @set localstatedir @localstatedir@ +@set runstatedir @runstatedir@ diff --git a/m4/Makefile.am b/m4/Makefile.am deleted file mode 100644 index 0f58aef..0000000 --- a/m4/Makefile.am +++ /dev/null @@ -1,4 +0,0 @@ -## Process this file with automake to produce Makefile.in -*-Makefile-*- - -EXTRA_DIST = README *.m4 - diff --git a/m4/Makefile.in b/m4/Makefile.in deleted file mode 100644 index 7a4d780..0000000 --- a/m4/Makefile.in +++ /dev/null @@ -1,418 +0,0 @@ -# Makefile.in generated by automake 1.15.1 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994-2017 Free Software Foundation, Inc. - -# This Makefile.in is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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The generation will fail -if you don't have all the right tools. diff --git a/m4/openssl.m4 b/m4/openssl.m4 index adca5f7..895c31a 100644 --- a/m4/openssl.m4 +++ b/m4/openssl.m4 @@ -54,5 +54,5 @@ AC_DEFUN([tinc_OPENSSL], [#include ] ) - AC_CHECK_FUNCS([BN_GENCB_new ERR_remove_state RSA_set0_key], , , [#include ]) + AC_CHECK_FUNCS([BN_GENCB_new RSA_set0_key], , , [#include ]) ]) diff --git a/src/Makefile.am b/src/Makefile.am index a5a9692..7b3dd97 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -14,7 +14,6 @@ tincd_SOURCES = \ edge.c edge.h \ ethernet.h \ event.c event.h \ - fake-gai-errnos.h \ fake-getaddrinfo.c fake-getaddrinfo.h \ fake-getnameinfo.c fake-getnameinfo.h \ graph.c graph.h \ @@ -44,8 +43,7 @@ tincd_SOURCES = \ subnet.c subnet.h \ tincd.c \ utils.c utils.h \ - xalloc.h \ - xmalloc.c + xalloc.h if !GETOPT tincd_SOURCES += \ @@ -88,4 +86,4 @@ if TUNEMU LIBS += -lpcap endif -AM_CPPFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" +AM_CPPFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DRUNSTATEDIR=\"$(runstatedir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" -I $(abs_top_builddir)/ diff --git a/src/Makefile.in b/src/Makefile.in index a158ea2..4355147 100644 --- a/src/Makefile.in +++ b/src/Makefile.in @@ -124,19 +124,18 @@ PROGRAMS = $(sbin_PROGRAMS) am__tincd_SOURCES_DIST = have.h system.h avl_tree.c avl_tree.h conf.c \ conf.h connection.c connection.h device.h dropin.c dropin.h \ dummy_device.c edge.c edge.h ethernet.h event.c event.h \ - fake-gai-errnos.h fake-getaddrinfo.c fake-getaddrinfo.h \ - fake-getnameinfo.c fake-getnameinfo.h graph.c graph.h ipv4.h \ - ipv6.h list.c list.h logger.c logger.h meta.c meta.h \ - multicast_device.c net.c net.h net_packet.c net_setup.c \ - net_socket.c netutl.c netutl.h node.c node.h pidfile.c \ - pidfile.h process.c process.h protocol.c protocol.h \ - protocol_auth.c protocol_edge.c protocol_misc.c protocol_key.c \ - protocol_subnet.c proxy.c proxy.h raw_socket_device.c route.c \ - route.h subnet.c subnet.h tincd.c utils.c utils.h xalloc.h \ - xmalloc.c getopt.c getopt.h getopt1.c linux/device.c \ - bsd/device.c bsd/tunemu.c bsd/tunemu.h solaris/device.c \ - mingw/device.c mingw/common.h cygwin/device.c uml_device.c \ - vde_device.c + fake-getaddrinfo.c fake-getaddrinfo.h fake-getnameinfo.c \ + fake-getnameinfo.h graph.c graph.h ipv4.h ipv6.h list.c list.h \ + logger.c logger.h meta.c meta.h multicast_device.c net.c net.h \ + net_packet.c net_setup.c net_socket.c netutl.c netutl.h node.c \ + node.h pidfile.c pidfile.h process.c process.h protocol.c \ + protocol.h protocol_auth.c protocol_edge.c protocol_misc.c \ + protocol_key.c protocol_subnet.c proxy.c proxy.h \ + raw_socket_device.c route.c route.h subnet.c subnet.h tincd.c \ + utils.c utils.h xalloc.h getopt.c getopt.h getopt1.c \ + linux/device.c bsd/device.c bsd/tunemu.c bsd/tunemu.h \ + solaris/device.c mingw/device.c mingw/common.h cygwin/device.c \ + uml_device.c vde_device.c @GETOPT_FALSE@am__objects_1 = getopt.$(OBJEXT) getopt1.$(OBJEXT) am__dirstamp = $(am__leading_dot)dirstamp @LINUX_TRUE@am__objects_2 = linux/device.$(OBJEXT) @@ -159,10 +158,10 @@ am_tincd_OBJECTS = avl_tree.$(OBJEXT) conf.$(OBJEXT) \ protocol_misc.$(OBJEXT) protocol_key.$(OBJEXT) \ protocol_subnet.$(OBJEXT) proxy.$(OBJEXT) \ raw_socket_device.$(OBJEXT) route.$(OBJEXT) subnet.$(OBJEXT) \ - tincd.$(OBJEXT) utils.$(OBJEXT) xmalloc.$(OBJEXT) \ - $(am__objects_1) $(am__objects_2) $(am__objects_3) \ - $(am__objects_4) $(am__objects_5) $(am__objects_6) \ - $(am__objects_7) $(am__objects_8) $(am__objects_9) + tincd.$(OBJEXT) utils.$(OBJEXT) $(am__objects_1) \ + $(am__objects_2) $(am__objects_3) $(am__objects_4) \ + $(am__objects_5) $(am__objects_6) $(am__objects_7) \ + $(am__objects_8) $(am__objects_9) tincd_OBJECTS = $(am_tincd_OBJECTS) tincd_LDADD = $(LDADD) AM_V_P = $(am__v_P_@AM_V@) @@ -251,7 +250,6 @@ LDFLAGS = @LDFLAGS@ LIBOBJS = @LIBOBJS@ LIBS = @LIBS@ $(am__append_10) LTLIBOBJS = @LTLIBOBJS@ -MAINT = @MAINT@ MAKEINFO = @MAKEINFO@ MKDIR_P = @MKDIR_P@ OBJEXT = @OBJEXT@ @@ -325,24 +323,24 @@ top_srcdir = @top_srcdir@ tincd_SOURCES = have.h system.h avl_tree.c avl_tree.h conf.c conf.h \ connection.c connection.h device.h dropin.c dropin.h \ dummy_device.c edge.c edge.h ethernet.h event.c event.h \ - fake-gai-errnos.h fake-getaddrinfo.c fake-getaddrinfo.h \ - fake-getnameinfo.c fake-getnameinfo.h graph.c graph.h ipv4.h \ - ipv6.h list.c list.h logger.c logger.h meta.c meta.h \ - multicast_device.c net.c net.h net_packet.c net_setup.c \ - net_socket.c netutl.c netutl.h node.c node.h pidfile.c \ - pidfile.h process.c process.h protocol.c protocol.h \ - protocol_auth.c protocol_edge.c protocol_misc.c protocol_key.c \ - protocol_subnet.c proxy.c proxy.h raw_socket_device.c route.c \ - route.h subnet.c subnet.h tincd.c utils.c utils.h xalloc.h \ - xmalloc.c $(am__append_1) $(am__append_2) $(am__append_3) \ - $(am__append_4) $(am__append_5) $(am__append_6) \ - $(am__append_7) $(am__append_8) $(am__append_9) -AM_CPPFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" + fake-getaddrinfo.c fake-getaddrinfo.h fake-getnameinfo.c \ + fake-getnameinfo.h graph.c graph.h ipv4.h ipv6.h list.c list.h \ + logger.c logger.h meta.c meta.h multicast_device.c net.c net.h \ + net_packet.c net_setup.c net_socket.c netutl.c netutl.h node.c \ + node.h pidfile.c pidfile.h process.c process.h protocol.c \ + protocol.h protocol_auth.c protocol_edge.c protocol_misc.c \ + protocol_key.c protocol_subnet.c proxy.c proxy.h \ + raw_socket_device.c route.c route.h subnet.c subnet.h tincd.c \ + utils.c utils.h xalloc.h $(am__append_1) $(am__append_2) \ + $(am__append_3) $(am__append_4) $(am__append_5) \ + $(am__append_6) $(am__append_7) $(am__append_8) \ + $(am__append_9) +AM_CPPFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DRUNSTATEDIR=\"$(runstatedir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" -I $(abs_top_builddir)/ all: all-am .SUFFIXES: .SUFFIXES: .c .o .obj -$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps) +$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps) @for dep in $?; do \ case '$(am__configure_deps)' in \ *$$dep*) \ @@ -366,9 +364,9 @@ Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh -$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) +$(top_srcdir)/configure: $(am__configure_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh -$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps) +$(ACLOCAL_M4): $(am__aclocal_m4_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh $(am__aclocal_m4_deps): install-sbinPROGRAMS: $(sbin_PROGRAMS) @@ -525,7 +523,6 @@ distclean-compile: @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/uml_device.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/utils.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vde_device.Po@am__quote@ -@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xmalloc.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@bsd/$(DEPDIR)/device.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@bsd/$(DEPDIR)/tunemu.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@cygwin/$(DEPDIR)/device.Po@am__quote@ diff --git a/src/avl_tree.c b/src/avl_tree.c index 0d122bf..96d3d43 100644 --- a/src/avl_tree.c +++ b/src/avl_tree.c @@ -50,14 +50,14 @@ #endif #ifndef AVL_DEPTH -static int lg(unsigned int u) __attribute__ ((__const__)); +static int lg(unsigned int u) __attribute__((__const__)); -static int lg(unsigned int u) -{ +static int lg(unsigned int u) { int r = 1; - if(!u) + if(!u) { return 0; + } if(u & 0xffff0000) { u >>= 16; @@ -79,8 +79,9 @@ static int lg(unsigned int u) r += 2; } - if(u & 0x00000002) + if(u & 0x00000002) { r++; + } return r; } @@ -88,8 +89,7 @@ static int lg(unsigned int u) /* Internal helper functions */ -static int avl_check_balance(const avl_node_t *node) -{ +static int avl_check_balance(const avl_node_t *node) { #ifdef AVL_DEPTH int d; @@ -97,27 +97,28 @@ static int avl_check_balance(const avl_node_t *node) return d < -1 ? -1 : d > 1 ? 1 : 0; #else -/* int d; - * d = lg(AVL_R_COUNT(node)) - lg(AVL_L_COUNT(node)); - * d = d<-1?-1:d>1?1:0; - */ + /* int d; + * d = lg(AVL_R_COUNT(node)) - lg(AVL_L_COUNT(node)); + * d = d<-1?-1:d>1?1:0; + */ int pl, r; pl = lg(AVL_L_COUNT(node)); r = AVL_R_COUNT(node); - if(r >> pl + 1) + if(r >> pl + 1) { return 1; + } - if(pl < 2 || r >> pl - 2) + if(pl < 2 || r >> pl - 2) { return 0; + } return -1; #endif } -static void avl_rebalance(avl_tree_t *tree, avl_node_t *node) -{ +static void avl_rebalance(avl_tree_t *tree, avl_node_t *node) { avl_node_t *child; avl_node_t *gchild; avl_node_t *parent; @@ -127,135 +128,154 @@ static void avl_rebalance(avl_tree_t *tree, avl_node_t *node) parent = node->parent; superparent = - parent ? node == - parent->left ? &parent->left : &parent->right : &tree->root; + parent ? node == + parent->left ? &parent->left : &parent->right : &tree->root; - switch (avl_check_balance(node)) { - case -1: - child = node->left; + switch(avl_check_balance(node)) { + case -1: + child = node->left; #ifdef AVL_DEPTH - if(L_AVL_DEPTH(child) >= R_AVL_DEPTH(child)) { + + if(L_AVL_DEPTH(child) >= R_AVL_DEPTH(child)) { #else - if(AVL_L_COUNT(child) >= AVL_R_COUNT(child)) { + + if(AVL_L_COUNT(child) >= AVL_R_COUNT(child)) { #endif - node->left = child->right; - if(node->left) - node->left->parent = node; + node->left = child->right; - child->right = node; - node->parent = child; - *superparent = child; - child->parent = parent; -#ifdef AVL_COUNT - node->count = AVL_CALC_COUNT(node); - child->count = AVL_CALC_COUNT(child); -#endif -#ifdef AVL_DEPTH - node->depth = AVL_CALC_DEPTH(node); - child->depth = AVL_CALC_DEPTH(child); -#endif - } else { - gchild = child->right; - node->left = gchild->right; - - if(node->left) - node->left->parent = node; - child->right = gchild->left; - - if(child->right) - child->right->parent = child; - gchild->right = node; - - gchild->right->parent = gchild; - gchild->left = child; - - gchild->left->parent = gchild; - - *superparent = gchild; - gchild->parent = parent; -#ifdef AVL_COUNT - node->count = AVL_CALC_COUNT(node); - child->count = AVL_CALC_COUNT(child); - gchild->count = AVL_CALC_COUNT(gchild); -#endif -#ifdef AVL_DEPTH - node->depth = AVL_CALC_DEPTH(node); - child->depth = AVL_CALC_DEPTH(child); - gchild->depth = AVL_CALC_DEPTH(gchild); -#endif + if(node->left) { + node->left->parent = node; } - break; - case 1: - child = node->right; -#ifdef AVL_DEPTH - if(R_AVL_DEPTH(child) >= L_AVL_DEPTH(child)) { -#else - if(AVL_R_COUNT(child) >= AVL_L_COUNT(child)) { -#endif - node->right = child->left; - if(node->right) - node->right->parent = node; - child->left = node; - node->parent = child; - *superparent = child; - child->parent = parent; -#ifdef AVL_COUNT - node->count = AVL_CALC_COUNT(node); - child->count = AVL_CALC_COUNT(child); -#endif -#ifdef AVL_DEPTH - node->depth = AVL_CALC_DEPTH(node); - child->depth = AVL_CALC_DEPTH(child); -#endif - } else { - gchild = child->left; - node->right = gchild->left; - - if(node->right) - node->right->parent = node; - child->left = gchild->right; - - if(child->left) - child->left->parent = child; - gchild->left = node; - - gchild->left->parent = gchild; - gchild->right = child; - - gchild->right->parent = gchild; - - *superparent = gchild; - gchild->parent = parent; -#ifdef AVL_COUNT - node->count = AVL_CALC_COUNT(node); - child->count = AVL_CALC_COUNT(child); - gchild->count = AVL_CALC_COUNT(gchild); -#endif -#ifdef AVL_DEPTH - node->depth = AVL_CALC_DEPTH(node); - child->depth = AVL_CALC_DEPTH(child); - gchild->depth = AVL_CALC_DEPTH(gchild); -#endif - } - break; - - default: + child->right = node; + node->parent = child; + *superparent = child; + child->parent = parent; #ifdef AVL_COUNT node->count = AVL_CALC_COUNT(node); + child->count = AVL_CALC_COUNT(child); #endif #ifdef AVL_DEPTH node->depth = AVL_CALC_DEPTH(node); + child->depth = AVL_CALC_DEPTH(child); +#endif + } else { + gchild = child->right; + node->left = gchild->right; + + if(node->left) { + node->left->parent = node; + } + + child->right = gchild->left; + + if(child->right) { + child->right->parent = child; + } + + gchild->right = node; + + gchild->right->parent = gchild; + gchild->left = child; + + gchild->left->parent = gchild; + + *superparent = gchild; + gchild->parent = parent; +#ifdef AVL_COUNT + node->count = AVL_CALC_COUNT(node); + child->count = AVL_CALC_COUNT(child); + gchild->count = AVL_CALC_COUNT(gchild); +#endif +#ifdef AVL_DEPTH + node->depth = AVL_CALC_DEPTH(node); + child->depth = AVL_CALC_DEPTH(child); + gchild->depth = AVL_CALC_DEPTH(gchild); +#endif + } + + break; + + case 1: + child = node->right; +#ifdef AVL_DEPTH + + if(R_AVL_DEPTH(child) >= L_AVL_DEPTH(child)) { +#else + + if(AVL_R_COUNT(child) >= AVL_L_COUNT(child)) { +#endif + node->right = child->left; + + if(node->right) { + node->right->parent = node; + } + + child->left = node; + node->parent = child; + *superparent = child; + child->parent = parent; +#ifdef AVL_COUNT + node->count = AVL_CALC_COUNT(node); + child->count = AVL_CALC_COUNT(child); +#endif +#ifdef AVL_DEPTH + node->depth = AVL_CALC_DEPTH(node); + child->depth = AVL_CALC_DEPTH(child); +#endif + } else { + gchild = child->left; + node->right = gchild->left; + + if(node->right) { + node->right->parent = node; + } + + child->left = gchild->right; + + if(child->left) { + child->left->parent = child; + } + + gchild->left = node; + + gchild->left->parent = gchild; + gchild->right = child; + + gchild->right->parent = gchild; + + *superparent = gchild; + gchild->parent = parent; +#ifdef AVL_COUNT + node->count = AVL_CALC_COUNT(node); + child->count = AVL_CALC_COUNT(child); + gchild->count = AVL_CALC_COUNT(gchild); +#endif +#ifdef AVL_DEPTH + node->depth = AVL_CALC_DEPTH(node); + child->depth = AVL_CALC_DEPTH(child); + gchild->depth = AVL_CALC_DEPTH(gchild); +#endif + } + + break; + + default: +#ifdef AVL_COUNT + node->count = AVL_CALC_COUNT(node); +#endif +#ifdef AVL_DEPTH + node->depth = AVL_CALC_DEPTH(node); #endif } + node = parent; } } /* (De)constructors */ -avl_tree_t *avl_alloc_tree(avl_compare_t compare, avl_action_t delete) -{ +avl_tree_t *avl_alloc_tree(avl_compare_t compare, avl_action_t delete) { avl_tree_t *tree; tree = xmalloc_and_zero(sizeof(avl_tree_t)); @@ -265,28 +285,25 @@ avl_tree_t *avl_alloc_tree(avl_compare_t compare, avl_action_t delete) return tree; } -void avl_free_tree(avl_tree_t *tree) -{ +void avl_free_tree(avl_tree_t *tree) { free(tree); } -avl_node_t *avl_alloc_node(void) -{ +avl_node_t *avl_alloc_node(void) { return xmalloc_and_zero(sizeof(avl_node_t)); } -void avl_free_node(avl_tree_t *tree, avl_node_t *node) -{ - if(node->data && tree->delete) +void avl_free_node(avl_tree_t *tree, avl_node_t *node) { + if(node->data && tree->delete) { tree->delete(node->data); + } free(node); } /* Searching */ -void *avl_search(const avl_tree_t *tree, const void *data) -{ +void *avl_search(const avl_tree_t *tree, const void *data) { avl_node_t *node; node = avl_search_node(tree, data); @@ -294,8 +311,7 @@ void *avl_search(const avl_tree_t *tree, const void *data) return node ? node->data : NULL; } -void *avl_search_closest(const avl_tree_t *tree, const void *data, int *result) -{ +void *avl_search_closest(const avl_tree_t *tree, const void *data, int *result) { avl_node_t *node; node = avl_search_closest_node(tree, data, result); @@ -303,8 +319,7 @@ void *avl_search_closest(const avl_tree_t *tree, const void *data, int *result) return node ? node->data : NULL; } -void *avl_search_closest_smaller(const avl_tree_t *tree, const void *data) -{ +void *avl_search_closest_smaller(const avl_tree_t *tree, const void *data) { avl_node_t *node; node = avl_search_closest_smaller_node(tree, data); @@ -312,8 +327,7 @@ void *avl_search_closest_smaller(const avl_tree_t *tree, const void *data) return node ? node->data : NULL; } -void *avl_search_closest_greater(const avl_tree_t *tree, const void *data) -{ +void *avl_search_closest_greater(const avl_tree_t *tree, const void *data) { avl_node_t *node; node = avl_search_closest_greater_node(tree, data); @@ -321,8 +335,7 @@ void *avl_search_closest_greater(const avl_tree_t *tree, const void *data) return node ? node->data : NULL; } -avl_node_t *avl_search_node(const avl_tree_t *tree, const void *data) -{ +avl_node_t *avl_search_node(const avl_tree_t *tree, const void *data) { avl_node_t *node; int result; @@ -332,16 +345,17 @@ avl_node_t *avl_search_node(const avl_tree_t *tree, const void *data) } avl_node_t *avl_search_closest_node(const avl_tree_t *tree, const void *data, - int *result) -{ + int *result) { avl_node_t *node; int c; node = tree->root; if(!node) { - if(result) + if(result) { *result = 0; + } + return NULL; } @@ -349,24 +363,30 @@ avl_node_t *avl_search_closest_node(const avl_tree_t *tree, const void *data, c = tree->compare(data, node->data); if(c < 0) { - if(node->left) + if(node->left) { node = node->left; - else { - if(result) + } else { + if(result) { *result = -1; + } + break; } } else if(c > 0) { - if(node->right) + if(node->right) { node = node->right; - else { - if(result) + } else { + if(result) { *result = 1; + } + break; } } else { - if(result) + if(result) { *result = 0; + } + break; } } @@ -375,37 +395,36 @@ avl_node_t *avl_search_closest_node(const avl_tree_t *tree, const void *data, } avl_node_t *avl_search_closest_smaller_node(const avl_tree_t *tree, - const void *data) -{ + const void *data) { avl_node_t *node; int result; node = avl_search_closest_node(tree, data, &result); - if(result < 0) + if(result < 0) { node = node->prev; + } return node; } avl_node_t *avl_search_closest_greater_node(const avl_tree_t *tree, - const void *data) -{ + const void *data) { avl_node_t *node; int result; node = avl_search_closest_node(tree, data, &result); - if(result > 0) + if(result > 0) { node = node->next; + } return node; } /* Insertion and deletion */ -avl_node_t *avl_insert(avl_tree_t *tree, void *data) -{ +avl_node_t *avl_insert(avl_tree_t *tree, void *data) { avl_node_t *closest, *new; int result; @@ -416,21 +435,21 @@ avl_node_t *avl_insert(avl_tree_t *tree, void *data) } else { closest = avl_search_closest_node(tree, data, &result); - switch (result) { - case -1: - new = avl_alloc_node(); - new->data = data; - avl_insert_before(tree, closest, new); - break; + switch(result) { + case -1: + new = avl_alloc_node(); + new->data = data; + avl_insert_before(tree, closest, new); + break; - case 1: - new = avl_alloc_node(); - new->data = data; - avl_insert_after(tree, closest, new); - break; + case 1: + new = avl_alloc_node(); + new->data = data; + avl_insert_after(tree, closest, new); + break; - default: - return NULL; + default: + return NULL; } } @@ -444,27 +463,26 @@ avl_node_t *avl_insert(avl_tree_t *tree, void *data) return new; } -avl_node_t *avl_insert_node(avl_tree_t *tree, avl_node_t *node) -{ +avl_node_t *avl_insert_node(avl_tree_t *tree, avl_node_t *node) { avl_node_t *closest; int result; - if(!tree->root) + if(!tree->root) { avl_insert_top(tree, node); - else { + } else { closest = avl_search_closest_node(tree, node->data, &result); - switch (result) { - case -1: - avl_insert_before(tree, closest, node); - break; + switch(result) { + case -1: + avl_insert_before(tree, closest, node); + break; - case 1: - avl_insert_after(tree, closest, node); - break; + case 1: + avl_insert_after(tree, closest, node); + break; - case 0: - return NULL; + case 0: + return NULL; } } @@ -478,20 +496,20 @@ avl_node_t *avl_insert_node(avl_tree_t *tree, avl_node_t *node) return node; } -void avl_insert_top(avl_tree_t *tree, avl_node_t *node) -{ +void avl_insert_top(avl_tree_t *tree, avl_node_t *node) { node->prev = node->next = node->parent = NULL; tree->head = tree->tail = tree->root = node; } void avl_insert_before(avl_tree_t *tree, avl_node_t *before, - avl_node_t *node) -{ + avl_node_t *node) { if(!before) { - if(tree->tail) + if(tree->tail) { avl_insert_after(tree, tree->tail, node); - else + } else { avl_insert_top(tree, node); + } + return; } @@ -504,10 +522,11 @@ void avl_insert_before(avl_tree_t *tree, avl_node_t *before, return; } - if(before->prev) + if(before->prev) { before->prev->next = node; - else + } else { tree->head = node; + } before->prev = node; before->left = node; @@ -515,13 +534,14 @@ void avl_insert_before(avl_tree_t *tree, avl_node_t *before, avl_rebalance(tree, before); } -void avl_insert_after(avl_tree_t *tree, avl_node_t *after, avl_node_t *node) -{ +void avl_insert_after(avl_tree_t *tree, avl_node_t *after, avl_node_t *node) { if(!after) { - if(tree->head) + if(tree->head) { avl_insert_before(tree, tree->head, node); - else + } else { avl_insert_top(tree, node); + } + return; } @@ -534,10 +554,11 @@ void avl_insert_after(avl_tree_t *tree, avl_node_t *after, avl_node_t *node) node->parent = after; node->next = after->next; - if(after->next) + if(after->next) { after->next->prev = node; - else + } else { tree->tail = node; + } after->next = node; after->right = node; @@ -545,47 +566,51 @@ void avl_insert_after(avl_tree_t *tree, avl_node_t *after, avl_node_t *node) avl_rebalance(tree, after); } -avl_node_t *avl_unlink(avl_tree_t *tree, void *data) -{ +avl_node_t *avl_unlink(avl_tree_t *tree, void *data) { avl_node_t *node; node = avl_search_node(tree, data); - if(node) + if(node) { avl_unlink_node(tree, node); + } return node; } -void avl_unlink_node(avl_tree_t *tree, avl_node_t *node) -{ +void avl_unlink_node(avl_tree_t *tree, avl_node_t *node) { avl_node_t *parent; avl_node_t **superparent; avl_node_t *subst, *left, *right; avl_node_t *balnode; - if(node->prev) + if(node->prev) { node->prev->next = node->next; - else + } else { tree->head = node->next; - if(node->next) + } + + if(node->next) { node->next->prev = node->prev; - else + } else { tree->tail = node->prev; + } parent = node->parent; superparent = - parent ? node == - parent->left ? &parent->left : &parent->right : &tree->root; + parent ? node == + parent->left ? &parent->left : &parent->right : &tree->root; left = node->left; right = node->right; + if(!left) { *superparent = right; - if(right) + if(right) { right->parent = parent; + } balnode = parent; } else if(!right) { @@ -594,8 +619,10 @@ void avl_unlink_node(avl_tree_t *tree, avl_node_t *node) balnode = parent; } else { subst = node->prev; - if(!subst) // This only happens if node is not actually in a tree at all. + + if(!subst) { // This only happens if node is not actually in a tree at all. abort(); + } if(subst == left) { balnode = subst; @@ -603,8 +630,9 @@ void avl_unlink_node(avl_tree_t *tree, avl_node_t *node) balnode = subst->parent; balnode->right = subst->left; - if(balnode->right) + if(balnode->right) { balnode->right->parent = balnode; + } subst->left = left; left->parent = subst; @@ -628,26 +656,24 @@ void avl_unlink_node(avl_tree_t *tree, avl_node_t *node) #endif } -void avl_delete_node(avl_tree_t *tree, avl_node_t *node) -{ +void avl_delete_node(avl_tree_t *tree, avl_node_t *node) { avl_unlink_node(tree, node); avl_free_node(tree, node); } -void avl_delete(avl_tree_t *tree, void *data) -{ +void avl_delete(avl_tree_t *tree, void *data) { avl_node_t *node; node = avl_search_node(tree, data); - if(node) + if(node) { avl_delete_node(tree, node); + } } /* Fast tree cleanup */ -void avl_delete_tree(avl_tree_t *tree) -{ +void avl_delete_tree(avl_tree_t *tree) { avl_node_t *node, *next; for(node = tree->head; node; node = next) { @@ -660,8 +686,7 @@ void avl_delete_tree(avl_tree_t *tree) /* Tree walking */ -void avl_foreach(const avl_tree_t *tree, avl_action_t action) -{ +void avl_foreach(const avl_tree_t *tree, avl_action_t action) { avl_node_t *node, *next; for(node = tree->head; node; node = next) { @@ -670,8 +695,7 @@ void avl_foreach(const avl_tree_t *tree, avl_action_t action) } } -void avl_foreach_node(const avl_tree_t *tree, avl_action_t action) -{ +void avl_foreach_node(const avl_tree_t *tree, avl_action_t action) { avl_node_t *node, *next; for(node = tree->head; node; node = next) { @@ -683,13 +707,11 @@ void avl_foreach_node(const avl_tree_t *tree, avl_action_t action) /* Indexing */ #ifdef AVL_COUNT -unsigned int avl_count(const avl_tree_t *tree) -{ +unsigned int avl_count(const avl_tree_t *tree) { return AVL_NODE_COUNT(tree->root); } -avl_node_t *avl_get_node(const avl_tree_t *tree, unsigned int index) -{ +avl_node_t *avl_get_node(const avl_tree_t *tree, unsigned int index) { avl_node_t *node; unsigned int c; @@ -711,16 +733,17 @@ avl_node_t *avl_get_node(const avl_tree_t *tree, unsigned int index) return NULL; } -unsigned int avl_index(const avl_node_t *node) -{ +unsigned int avl_index(const avl_node_t *node) { avl_node_t *next; unsigned int index; index = AVL_L_COUNT(node); while((next = node->parent)) { - if(node == next->right) + if(node == next->right) { index += AVL_L_COUNT(next) + 1; + } + node = next; } @@ -728,8 +751,7 @@ unsigned int avl_index(const avl_node_t *node) } #endif #ifdef AVL_DEPTH -unsigned int avl_depth(const avl_tree_t *tree) -{ +unsigned int avl_depth(const avl_tree_t *tree) { return AVL_NODE_DEPTH(tree->root); } #endif diff --git a/src/avl_tree.h b/src/avl_tree.h index 4171264..e8cefcf 100644 --- a/src/avl_tree.h +++ b/src/avl_tree.h @@ -1,3 +1,6 @@ +#ifndef TINC_AVL_TREE_H +#define TINC_AVL_TREE_H + /* avl_tree.h -- header file for avl_tree.c Copyright (C) 1998 Michael H. Buselli @@ -30,10 +33,6 @@ Guus Sliepen . */ - -#ifndef __AVL_TREE_H__ -#define __AVL_TREE_H__ - #ifndef AVL_DEPTH #ifndef AVL_COUNT #define AVL_DEPTH @@ -66,9 +65,9 @@ typedef struct avl_node_t { } avl_node_t; -typedef int (*avl_compare_t)(const void *, const void *); -typedef void (*avl_action_t)(const void *); -typedef void (*avl_action_node_t)(const avl_node_t *); +typedef int (*avl_compare_t)(const void *data1, const void *data2); +typedef void (*avl_action_t)(const void *data); +typedef void (*avl_action_node_t)(const avl_node_t *node); typedef struct avl_tree_t { @@ -88,56 +87,56 @@ typedef struct avl_tree_t { /* (De)constructors */ -extern avl_tree_t *avl_alloc_tree(avl_compare_t, avl_action_t); -extern void avl_free_tree(avl_tree_t *); +extern avl_tree_t *avl_alloc_tree(avl_compare_t compare, avl_action_t delete); +extern void avl_free_tree(avl_tree_t *tree); extern avl_node_t *avl_alloc_node(void); -extern void avl_free_node(avl_tree_t *tree, avl_node_t *); +extern void avl_free_node(avl_tree_t *tree, avl_node_t *node); /* Insertion and deletion */ -extern avl_node_t *avl_insert(avl_tree_t *, void *); -extern avl_node_t *avl_insert_node(avl_tree_t *, avl_node_t *); +extern avl_node_t *avl_insert(avl_tree_t *tree, void *data); +extern avl_node_t *avl_insert_node(avl_tree_t *tree, avl_node_t *node); -extern void avl_insert_top(avl_tree_t *, avl_node_t *); -extern void avl_insert_before(avl_tree_t *, avl_node_t *, avl_node_t *); -extern void avl_insert_after(avl_tree_t *, avl_node_t *, avl_node_t *); +extern void avl_insert_top(avl_tree_t *tree, avl_node_t *node); +extern void avl_insert_before(avl_tree_t *tree, avl_node_t *before, avl_node_t *node); +extern void avl_insert_after(avl_tree_t *tree, avl_node_t *after, avl_node_t *node); -extern avl_node_t *avl_unlink(avl_tree_t *, void *); -extern void avl_unlink_node(avl_tree_t *tree, avl_node_t *); -extern void avl_delete(avl_tree_t *, void *); -extern void avl_delete_node(avl_tree_t *, avl_node_t *); +extern avl_node_t *avl_unlink(avl_tree_t *tree, void *data); +extern void avl_unlink_node(avl_tree_t *tree, avl_node_t *node); +extern void avl_delete(avl_tree_t *tree, void *data); +extern void avl_delete_node(avl_tree_t *tree, avl_node_t *node); /* Fast tree cleanup */ -extern void avl_delete_tree(avl_tree_t *); +extern void avl_delete_tree(avl_tree_t *tree); /* Searching */ -extern void *avl_search(const avl_tree_t *, const void *); -extern void *avl_search_closest(const avl_tree_t *, const void *, int *); -extern void *avl_search_closest_smaller(const avl_tree_t *, const void *); -extern void *avl_search_closest_greater(const avl_tree_t *, const void *); +extern void *avl_search(const avl_tree_t *tree, const void *data); +extern void *avl_search_closest(const avl_tree_t *tree, const void *data, int *result); +extern void *avl_search_closest_smaller(const avl_tree_t *tree, const void *data); +extern void *avl_search_closest_greater(const avl_tree_t *tree, const void *data); -extern avl_node_t *avl_search_node(const avl_tree_t *, const void *); -extern avl_node_t *avl_search_closest_node(const avl_tree_t *, const void *, int *); -extern avl_node_t *avl_search_closest_smaller_node(const avl_tree_t *, const void *); -extern avl_node_t *avl_search_closest_greater_node(const avl_tree_t *, const void *); +extern avl_node_t *avl_search_node(const avl_tree_t *tree, const void *data); +extern avl_node_t *avl_search_closest_node(const avl_tree_t *tree, const void *data, int *result); +extern avl_node_t *avl_search_closest_smaller_node(const avl_tree_t *tree, const void *data); +extern avl_node_t *avl_search_closest_greater_node(const avl_tree_t *tree, const void *data); /* Tree walking */ -extern void avl_foreach(const avl_tree_t *, avl_action_t); -extern void avl_foreach_node(const avl_tree_t *, avl_action_t); +extern void avl_foreach(const avl_tree_t *tree, avl_action_t action); +extern void avl_foreach_node(const avl_tree_t *tree, avl_action_t action); /* Indexing */ #ifdef AVL_COUNT -extern unsigned int avl_count(const avl_tree_t *); -extern avl_node_t *avl_get_node(const avl_tree_t *, unsigned int); -extern unsigned int avl_index(const avl_node_t *); +extern unsigned int avl_count(const avl_tree_t *tree); +extern avl_node_t *avl_get_node(const avl_tree_t *tree, unsigned int index); +extern unsigned int avl_index(const avl_node_t *node); #endif #ifdef AVL_DEPTH -extern unsigned int avl_depth(const avl_tree_t *); +extern unsigned int avl_depth(const avl_tree_t *tree); #endif -#endif /* __AVL_TREE_H__ */ +#endif diff --git a/src/bsd/device.c b/src/bsd/device.c index 95e65f9..23d6d69 100644 --- a/src/bsd/device.c +++ b/src/bsd/device.c @@ -55,7 +55,7 @@ typedef enum device_type { int device_fd = -1; char *device = NULL; char *iface = NULL; -static char *device_info = NULL; +static const char *device_info = "OS X utun device"; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; #if defined(ENABLE_TUNEMU) @@ -69,13 +69,15 @@ static device_type_t device_type = DEVICE_TYPE_TUN; #ifdef HAVE_NET_IF_UTUN_H static bool setup_utun(void) { device_fd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL); + if(device_fd == -1) { logger(LOG_ERR, "Could not open PF_SYSTEM socket: %s\n", strerror(errno)); return false; } struct ctl_info info = {}; - strlcpy(info.ctl_name, UTUN_CONTROL_NAME, sizeof info.ctl_name); + + strlcpy(info.ctl_name, UTUN_CONTROL_NAME, sizeof(info.ctl_name)); if(ioctl(device_fd, CTLIOCGINFO, &info) == -1) { logger(LOG_ERR, "ioctl(CTLIOCGINFO) failed: %s", strerror(errno)); @@ -84,15 +86,18 @@ static bool setup_utun(void) { int unit = -1; char *p = strstr(device, "utun"), *e = NULL; + if(p) { unit = strtol(p + 4, &e, 10); - if(!e) + + if(!e) { unit = -1; + } } struct sockaddr_ctl sc = { .sc_id = info.ctl_id, - .sc_len = sizeof sc, + .sc_len = sizeof(sc), .sc_family = AF_SYSTEM, .ss_sysaddr = AF_SYS_CONTROL, .sc_unit = unit + 1, @@ -104,15 +109,14 @@ static bool setup_utun(void) { } char name[64] = ""; - socklen_t len = sizeof name; + socklen_t len = sizeof(name); + if(getsockopt(device_fd, SYSPROTO_CONTROL, UTUN_OPT_IFNAME, name, &len)) { iface = xstrdup(device); } else { iface = xstrdup(name); } - device_info = "OS X utun device"; - logger(LOG_INFO, "%s is a %s", device, device_info); return true; @@ -123,10 +127,11 @@ static bool setup_device(void) { // Find out which device file to open if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { - if(routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { device = xstrdup(DEFAULT_TUN_DEVICE); - else + } else { device = xstrdup(DEFAULT_TAP_DEVICE); + } } // Find out if it's supposed to be a tun or a tap device @@ -135,33 +140,40 @@ static bool setup_device(void) { if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { if(!strcasecmp(type, "tun")) - /* use default */; + /* use default */; + #ifdef ENABLE_TUNEMU - else if(!strcasecmp(type, "tunemu")) + else if(!strcasecmp(type, "tunemu")) { device_type = DEVICE_TYPE_TUNEMU; + } + #endif #ifdef HAVE_NET_IF_UTUN_H - else if(!strcasecmp(type, "utun")) + else if(!strcasecmp(type, "utun")) { device_type = DEVICE_TYPE_UTUN; + } + #endif - else if(!strcasecmp(type, "tunnohead")) + else if(!strcasecmp(type, "tunnohead")) { device_type = DEVICE_TYPE_TUN; - else if(!strcasecmp(type, "tunifhead")) + } else if(!strcasecmp(type, "tunifhead")) { device_type = DEVICE_TYPE_TUNIFHEAD; - else if(!strcasecmp(type, "tap")) + } else if(!strcasecmp(type, "tap")) { device_type = DEVICE_TYPE_TAP; - else { + } else { logger(LOG_ERR, "Unknown device type %s!", type); return false; } } else { #ifdef HAVE_NET_IF_UTUN_H - if(strncmp(device, "utun", 4) == 0 || strncmp(device, "/dev/utun", 9) == 0) + + if(strncmp(device, "utun", 4) == 0 || strncmp(device, "/dev/utun", 9) == 0) { device_type = DEVICE_TYPE_UTUN; - else + } else #endif - if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) - device_type = DEVICE_TYPE_TAP; + if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) { + device_type = DEVICE_TYPE_TAP; + } } if(routing_mode == RMODE_SWITCH && device_type != DEVICE_TYPE_TAP) { @@ -173,18 +185,21 @@ static bool setup_device(void) { switch(device_type) { #ifdef ENABLE_TUNEMU - case DEVICE_TYPE_TUNEMU: { - char dynamic_name[256] = ""; - device_fd = tunemu_open(dynamic_name); - } - break; + + case DEVICE_TYPE_TUNEMU: { + char dynamic_name[256] = ""; + device_fd = tunemu_open(dynamic_name); + } + break; #endif #ifdef HAVE_NET_IF_UTUN_H - case DEVICE_TYPE_UTUN: - return setup_utun(); + + case DEVICE_TYPE_UTUN: + return setup_utun(); #endif - default: - device_fd = open(device, O_RDWR | O_NONBLOCK); + + default: + device_fd = open(device, O_RDWR | O_NONBLOCK); } if(device_fd < 0) { @@ -204,87 +219,108 @@ static bool setup_device(void) { realname = fdevname(device_fd); #elif defined(HAVE_DEVNAME) struct stat buf; - if(!fstat(device_fd, &buf)) + + if(!fstat(device_fd, &buf)) { realname = devname(buf.st_rdev, S_IFCHR); + } + #endif - if(!realname) + if(!realname) { realname = device; + } - if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) + if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) { iface = xstrdup(strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname); - else if(strcmp(iface, strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname)) + } else if(strcmp(iface, strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname)) { logger(LOG_WARNING, "Warning: Interface does not match Device. $INTERFACE might be set incorrectly."); + } // Configure the device as best as we can switch(device_type) { - default: - device_type = DEVICE_TYPE_TUN; - case DEVICE_TYPE_TUN: + default: + device_type = DEVICE_TYPE_TUN; + + case DEVICE_TYPE_TUN: #ifdef TUNSIFHEAD - { + { const int zero = 0; - if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) { + + if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof(zero)) == -1) { logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); return false; } } + #endif #if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST) { const int mode = IFF_BROADCAST | IFF_MULTICAST; - ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode); + ioctl(device_fd, TUNSIFMODE, &mode, sizeof(mode)); } #endif - device_info = "Generic BSD tun device"; - break; - case DEVICE_TYPE_TUNIFHEAD: + device_info = "Generic BSD tun device"; + break; + + case DEVICE_TYPE_TUNIFHEAD: #ifdef TUNSIFHEAD { const int one = 1; - if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof one) == -1) { + + if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof(one)) == -1) { logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); return false; } } + #endif #if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST) { - const int mode = IFF_BROADCAST | IFF_MULTICAST; - ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode); + const int mode = IFF_BROADCAST | IFF_MULTICAST; + ioctl(device_fd, TUNSIFMODE, &mode, sizeof(mode)); } #endif - device_info = "Generic BSD tun device"; - break; - case DEVICE_TYPE_TAP: - if(routing_mode == RMODE_ROUTER) - overwrite_mac = true; - device_info = "Generic BSD tap device"; + device_info = "Generic BSD tun device"; + break; + + case DEVICE_TYPE_TAP: + if(routing_mode == RMODE_ROUTER) { + overwrite_mac = true; + } + + device_info = "Generic BSD tap device"; #ifdef TAPGIFNAME - { - struct ifreq ifr; - if(ioctl(device_fd, TAPGIFNAME, (void*)&ifr) == 0) { - if(iface) - free(iface); - iface = xstrdup(ifr.ifr_name); + { + struct ifreq ifr; + + if(ioctl(device_fd, TAPGIFNAME, (void *)&ifr) == 0) { + if(iface) { + free(iface); } + + iface = xstrdup(ifr.ifr_name); } - + } + #endif - break; + break; #ifdef ENABLE_TUNEMU - case DEVICE_TYPE_TUNEMU: - device_info = "BSD tunemu device"; - break; + + case DEVICE_TYPE_TUNEMU: + device_info = "BSD tunemu device"; + break; #endif } #ifdef SIOCGIFADDR - if(overwrite_mac) + + if(overwrite_mac) { ioctl(device_fd, SIOCGIFADDR, mymac.x); + } + #endif logger(LOG_INFO, "%s is a %s", device, device_info); @@ -295,12 +331,14 @@ static bool setup_device(void) { static void close_device(void) { switch(device_type) { #ifdef ENABLE_TUNEMU - case DEVICE_TYPE_TUNEMU: - tunemu_close(device_fd); - break; + + case DEVICE_TYPE_TUNEMU: + tunemu_close(device_fd); + break; #endif - default: - close(device_fd); + + default: + close(device_fd); } free(device); @@ -311,154 +349,165 @@ static bool read_packet(vpn_packet_t *packet) { int lenin; switch(device_type) { - case DEVICE_TYPE_TUN: + case DEVICE_TYPE_TUN: #ifdef ENABLE_TUNEMU - case DEVICE_TYPE_TUNEMU: - if(device_type == DEVICE_TYPE_TUNEMU) - lenin = tunemu_read(device_fd, packet->data + 14, MTU - 14); - else + case DEVICE_TYPE_TUNEMU: + if(device_type == DEVICE_TYPE_TUNEMU) { + lenin = tunemu_read(device_fd, packet->data + 14, MTU - 14); + } else #endif - lenin = read(device_fd, packet->data + 14, MTU - 14); + lenin = read(device_fd, packet->data + 14, MTU - 14); - if(lenin <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); - return false; - } - - switch(packet->data[14] >> 4) { - case 4: - packet->data[12] = 0x08; - packet->data[13] = 0x00; - break; - case 6: - packet->data[12] = 0x86; - packet->data[13] = 0xDD; - break; - default: - ifdebug(TRAFFIC) logger(LOG_ERR, - "Unknown IP version %d while reading packet from %s %s", - packet->data[14] >> 4, device_info, device); - return false; - } - - memset(packet->data, 0, 12); - packet->len = lenin + 14; - break; - - case DEVICE_TYPE_UTUN: - case DEVICE_TYPE_TUNIFHEAD: { - if((lenin = read(device_fd, packet->data + 10, MTU - 10)) <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); - return false; - } - - switch(packet->data[14] >> 4) { - case 4: - packet->data[12] = 0x08; - packet->data[13] = 0x00; - break; - case 6: - packet->data[12] = 0x86; - packet->data[13] = 0xDD; - break; - default: - ifdebug(TRAFFIC) logger(LOG_ERR, - "Unknown IP version %d while reading packet from %s %s", - packet->data[14] >> 4, device_info, device); - return false; - } - - memset(packet->data, 0, 12); - packet->len = lenin + 10; - break; + if(lenin <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + device, strerror(errno)); + return false; } - case DEVICE_TYPE_TAP: - if((lenin = read(device_fd, packet->data, MTU)) <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); - return false; - } + switch(packet->data[14] >> 4) { + case 4: + packet->data[12] = 0x08; + packet->data[13] = 0x00; + break; - packet->len = lenin; + case 6: + packet->data[12] = 0x86; + packet->data[13] = 0xDD; break; default: + ifdebug(TRAFFIC) logger(LOG_ERR, + "Unknown IP version %d while reading packet from %s %s", + packet->data[14] >> 4, device_info, device); return false; + } + + memset(packet->data, 0, 12); + packet->len = lenin + 14; + break; + + case DEVICE_TYPE_UTUN: + case DEVICE_TYPE_TUNIFHEAD: { + if((lenin = read(device_fd, packet->data + 10, MTU - 10)) <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + device, strerror(errno)); + return false; + } + + switch(packet->data[14] >> 4) { + case 4: + packet->data[12] = 0x08; + packet->data[13] = 0x00; + break; + + case 6: + packet->data[12] = 0x86; + packet->data[13] = 0xDD; + break; + + default: + ifdebug(TRAFFIC) logger(LOG_ERR, + "Unknown IP version %d while reading packet from %s %s", + packet->data[14] >> 4, device_info, device); + return false; + } + + memset(packet->data, 0, 12); + packet->len = lenin + 10; + break; } - + + case DEVICE_TYPE_TAP: + if((lenin = read(device_fd, packet->data, MTU)) <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + device, strerror(errno)); + return false; + } + + packet->len = lenin; + break; + + default: + return false; + } + device_total_in += packet->len; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", - packet->len, device_info); + packet->len, device_info); return true; } static bool write_packet(vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); switch(device_type) { - case DEVICE_TYPE_TUN: - if(write(device_fd, packet->data + 14, packet->len - 14) < 0) { - logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, - device, strerror(errno)); - return false; - } - break; - - case DEVICE_TYPE_UTUN: - case DEVICE_TYPE_TUNIFHEAD: { - int af = (packet->data[12] << 8) + packet->data[13]; - uint32_t type; - - switch (af) { - case 0x0800: - type = htonl(AF_INET); - break; - case 0x86DD: - type = htonl(AF_INET6); - break; - default: - ifdebug(TRAFFIC) logger(LOG_ERR, - "Unknown address family %x while writing packet to %s %s", - af, device_info, device); - return false; - } - - memcpy(packet->data + 10, &type, sizeof type); - - if(write(device_fd, packet->data + 10, packet->len - 10) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, - strerror(errno)); - return false; - } - break; + case DEVICE_TYPE_TUN: + if(write(device_fd, packet->data + 14, packet->len - 14) < 0) { + logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, + device, strerror(errno)); + return false; } - - case DEVICE_TYPE_TAP: - if(write(device_fd, packet->data, packet->len) < 0) { - logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, - device, strerror(errno)); - return false; - } + + break; + + case DEVICE_TYPE_UTUN: + case DEVICE_TYPE_TUNIFHEAD: { + int af = (packet->data[12] << 8) + packet->data[13]; + uint32_t type; + + switch(af) { + case 0x0800: + type = htonl(AF_INET); break; -#ifdef ENABLE_TUNEMU - case DEVICE_TYPE_TUNEMU: - if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) { - logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, - device, strerror(errno)); - return false; - } + case 0x86DD: + type = htonl(AF_INET6); break; -#endif default: + ifdebug(TRAFFIC) logger(LOG_ERR, + "Unknown address family %x while writing packet to %s %s", + af, device_info, device); return false; + } + + memcpy(packet->data + 10, &type, sizeof(type)); + + if(write(device_fd, packet->data + 10, packet->len - 10) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, + strerror(errno)); + return false; + } + + break; + } + + case DEVICE_TYPE_TAP: + if(write(device_fd, packet->data, packet->len) < 0) { + logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, + device, strerror(errno)); + return false; + } + + break; + +#ifdef ENABLE_TUNEMU + + case DEVICE_TYPE_TUNEMU: + if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) { + logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, + device, strerror(errno)); + return false; + } + + break; +#endif + + default: + return false; } device_total_out += packet->len; diff --git a/src/bsd/tunemu.c b/src/bsd/tunemu.c index f532b04..7ff6f72 100644 --- a/src/bsd/tunemu.c +++ b/src/bsd/tunemu.c @@ -1,20 +1,20 @@ /* * tunemu - Tun device emulation for Darwin * Copyright (C) 2009 Friedrich Schöller - * + * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program. If not, see . - * + * */ #include "tunemu.h" @@ -36,37 +36,34 @@ #define PPPPROTO_CTL 1 -#define PPP_IP 0x21 -#define PPP_IPV6 0x57 +#define PPP_IP 0x21 +#define PPP_IPV6 0x57 #define SC_LOOP_TRAFFIC 0x00000200 -#define PPPIOCNEWUNIT _IOWR('t', 62, int) -#define PPPIOCSFLAGS _IOW('t', 89, int) -#define PPPIOCSNPMODE _IOW('t', 75, struct npioctl) -#define PPPIOCATTCHAN _IOW('t', 56, int) -#define PPPIOCGCHAN _IOR('t', 55, int) -#define PPPIOCCONNECT _IOW('t', 58, int) -#define PPPIOCGUNIT _IOR('t', 86, int) +#define PPPIOCNEWUNIT _IOWR('t', 62, int) +#define PPPIOCSFLAGS _IOW('t', 89, int) +#define PPPIOCSNPMODE _IOW('t', 75, struct npioctl) +#define PPPIOCATTCHAN _IOW('t', 56, int) +#define PPPIOCGCHAN _IOR('t', 55, int) +#define PPPIOCCONNECT _IOW('t', 58, int) +#define PPPIOCGUNIT _IOR('t', 86, int) -struct sockaddr_ppp -{ +struct sockaddr_ppp { u_int8_t ppp_len; u_int8_t ppp_family; u_int16_t ppp_proto; u_int32_t ppp_cookie; }; -enum NPmode -{ +enum NPmode { NPMODE_PASS, - NPMODE_DROP, - NPMODE_ERROR, - NPMODE_QUEUE + NPMODE_DROP, + NPMODE_ERROR, + NPMODE_QUEUE }; -struct npioctl -{ +struct npioctl { int protocol; enum NPmode mode; }; @@ -83,58 +80,55 @@ static pcap_t *pcap = NULL; static int data_buffer_length = 0; static char *data_buffer = NULL; -static void tun_error(char *format, ...) -{ +static void tun_error(char *format, ...) { va_list vl; va_start(vl, format); vsnprintf(tunemu_error, ERROR_BUFFER_SIZE, format, vl); va_end(vl); } -static void tun_noerror() -{ +static void tun_noerror() { *tunemu_error = 0; } -static void closeall() -{ - int fd = getdtablesize(); - while (fd--) - close(fd); +static void closeall() { + int fd = getdtablesize(); - open("/dev/null", O_RDWR, 0); - dup(0); - dup(0); + while(fd--) { + close(fd); + } + + open("/dev/null", O_RDWR, 0); + dup(0); + dup(0); } -static int ppp_load_kext() -{ +static int ppp_load_kext() { int pid = fork(); - if (pid < 0) - { + + if(pid < 0) { tun_error("fork for ppp kext: %s", strerror(errno)); return -1; } - if (pid == 0) - { + if(pid == 0) { closeall(); execle("/sbin/kextload", "kextload", PPP_KEXT_PATH, NULL, NULL); exit(1); } int status; - while (waitpid(pid, &status, 0) < 0) - { - if (errno == EINTR) + + while(waitpid(pid, &status, 0) < 0) { + if(errno == EINTR) { continue; + } tun_error("waitpid for ppp kext: %s", strerror(errno)); return -1; } - if (WEXITSTATUS(status) != 0) - { + if(WEXITSTATUS(status) != 0) { tun_error("could not load ppp kext \"%s\"", PPP_KEXT_PATH); return -1; } @@ -143,74 +137,73 @@ static int ppp_load_kext() return 0; } -static int ppp_new_instance() -{ +static int ppp_new_instance() { // create ppp socket - int ppp_sockfd = socket(PF_PPP, SOCK_RAW, PPPPROTO_CTL); - if (ppp_sockfd < 0) - { - if (ppp_load_kext() < 0) + int ppp_sockfd = socket(PF_PPP, SOCK_RAW, PPPPROTO_CTL); + + if(ppp_sockfd < 0) { + if(ppp_load_kext() < 0) { return -1; + } ppp_sockfd = socket(PF_PPP, SOCK_RAW, PPPPROTO_CTL); - if (ppp_sockfd < 0) - { + + if(ppp_sockfd < 0) { tun_error("creating ppp socket: %s", strerror(errno)); return -1; } } // connect to ppp procotol - struct sockaddr_ppp pppaddr; - pppaddr.ppp_len = sizeof(struct sockaddr_ppp); - pppaddr.ppp_family = AF_PPP; - pppaddr.ppp_proto = PPPPROTO_CTL; - pppaddr.ppp_cookie = 0; - if (connect(ppp_sockfd, (struct sockaddr *)&pppaddr, sizeof(struct sockaddr_ppp)) < 0) - { + struct sockaddr_ppp pppaddr; + pppaddr.ppp_len = sizeof(struct sockaddr_ppp); + pppaddr.ppp_family = AF_PPP; + pppaddr.ppp_proto = PPPPROTO_CTL; + pppaddr.ppp_cookie = 0; + + if(connect(ppp_sockfd, (struct sockaddr *)&pppaddr, sizeof(struct sockaddr_ppp)) < 0) { tun_error("connecting ppp socket: %s", strerror(errno)); close(ppp_sockfd); return -1; - } + } tun_noerror(); return ppp_sockfd; } -static int ppp_new_unit(int *unit_number) -{ +static int ppp_new_unit(int *unit_number) { int fd = ppp_new_instance(); - if (fd < 0) + + if(fd < 0) { return -1; + } // create ppp unit - if (ioctl(fd, PPPIOCNEWUNIT, unit_number) < 0) - { + if(ioctl(fd, PPPIOCNEWUNIT, unit_number) < 0) { tun_error("creating ppp unit: %s", strerror(errno)); close(fd); return -1; - } + } tun_noerror(); return fd; } -static int ppp_setup_unit(int unit_fd) -{ +static int ppp_setup_unit(int unit_fd) { // send traffic to program int flags = SC_LOOP_TRAFFIC; - if (ioctl(unit_fd, PPPIOCSFLAGS, &flags) < 0) - { + + if(ioctl(unit_fd, PPPIOCSFLAGS, &flags) < 0) { tun_error("setting ppp loopback mode: %s", strerror(errno)); return -1; - } + } // allow packets struct npioctl npi; npi.protocol = PPP_IP; npi.mode = NPMODE_PASS; - if (ioctl(unit_fd, PPPIOCSNPMODE, &npi) < 0) - { + + if(ioctl(unit_fd, PPPIOCSNPMODE, &npi) < 0) { tun_error("starting ppp unit: %s", strerror(errno)); return -1; } @@ -219,10 +212,8 @@ static int ppp_setup_unit(int unit_fd) return 0; } -static int open_pcap() -{ - if (pcap != NULL) - { +static int open_pcap() { + if(pcap != NULL) { pcap_use_count++; return 0; } @@ -231,8 +222,7 @@ static int open_pcap() pcap = pcap_open_live("lo0", BUFSIZ, 0, 1, errbuf); pcap_use_count = 1; - if (pcap == NULL) - { + if(pcap == NULL) { tun_error("opening pcap: %s", errbuf); return -1; } @@ -241,59 +231,57 @@ static int open_pcap() return 0; } -static void close_pcap() -{ - if (pcap == NULL) +static void close_pcap() { + if(pcap == NULL) { return; + } pcap_use_count--; - if (pcap_use_count == 0) - { + + if(pcap_use_count == 0) { pcap_close(pcap); pcap = NULL; } } -static void allocate_data_buffer(int size) -{ - if (data_buffer_length < size) - { +static void allocate_data_buffer(int size) { + if(data_buffer_length < size) { free(data_buffer); data_buffer_length = size; data_buffer = malloc(data_buffer_length); } } -static void make_device_name(tunemu_device device, int unit_number) -{ +static void make_device_name(tunemu_device device, int unit_number) { snprintf(device, sizeof(tunemu_device), "ppp%d", unit_number); } -static int check_device_name(tunemu_device device) -{ - if (strlen(device) < 4) +static int check_device_name(tunemu_device device) { + if(strlen(device) < 4) { return -1; + } int unit_number = atoi(device + 3); - if (unit_number < 0 || unit_number > 999) + + if(unit_number < 0 || unit_number > 999) { return -1; + } tunemu_device compare; make_device_name(compare, unit_number); - if (strcmp(device, compare) != 0) + if(strcmp(device, compare) != 0) { return -1; + } return 0; } -int tunemu_open(tunemu_device device) -{ +int tunemu_open(tunemu_device device) { int ppp_unit_number = -1; - if (device[0] != 0) - { - if (check_device_name(device) < 0) - { + + if(device[0] != 0) { + if(check_device_name(device) < 0) { tun_error("invalid device name \"%s\"", device); return -1; } @@ -302,17 +290,17 @@ int tunemu_open(tunemu_device device) } int ppp_unit_fd = ppp_new_unit(&ppp_unit_number); - if (ppp_unit_fd < 0) - return -1; - if (ppp_setup_unit(ppp_unit_fd) < 0) - { + if(ppp_unit_fd < 0) { + return -1; + } + + if(ppp_setup_unit(ppp_unit_fd) < 0) { close(ppp_unit_fd); return -1; } - if (open_pcap() < 0) - { + if(open_pcap() < 0) { close(ppp_unit_fd); return -1; } @@ -322,39 +310,40 @@ int tunemu_open(tunemu_device device) return ppp_unit_fd; } -int tunemu_close(int ppp_sockfd) -{ +int tunemu_close(int ppp_sockfd) { int ret = close(ppp_sockfd); - if (ret == 0) + if(ret == 0) { close_pcap(); + } return ret; } -int tunemu_read(int ppp_sockfd, char *buffer, int length) -{ +int tunemu_read(int ppp_sockfd, char *buffer, int length) { allocate_data_buffer(length + 2); length = read(ppp_sockfd, data_buffer, length + 2); - if (length < 0) - { + + if(length < 0) { tun_error("reading packet: %s", strerror(errno)); return length; } + tun_noerror(); length -= 2; - if (length < 0) + + if(length < 0) { return 0; + } memcpy(buffer, data_buffer + 2, length); return length; } -int tunemu_write(int ppp_sockfd, char *buffer, int length) -{ +int tunemu_write(int ppp_sockfd, char *buffer, int length) { allocate_data_buffer(length + 4); data_buffer[0] = 0x02; @@ -364,23 +353,25 @@ int tunemu_write(int ppp_sockfd, char *buffer, int length) memcpy(data_buffer + 4, buffer, length); - if (pcap == NULL) - { + if(pcap == NULL) { tun_error("pcap not open"); return -1; } length = pcap_inject(pcap, data_buffer, length + 4); - if (length < 0) - { + + if(length < 0) { tun_error("injecting packet: %s", pcap_geterr(pcap)); return length; } + tun_noerror(); length -= 4; - if (length < 0) + + if(length < 0) { return 0; + } return length; } diff --git a/src/bsd/tunemu.h b/src/bsd/tunemu.h index 42b1785..e0452a8 100644 --- a/src/bsd/tunemu.h +++ b/src/bsd/tunemu.h @@ -1,20 +1,20 @@ /* * tunemu - Tun device emulation for Darwin * Copyright (C) 2009 Friedrich Schöller - * + * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program. If not, see . - * + * */ #ifndef TUNEMU_H diff --git a/src/conf.c b/src/conf.c index 99bf381..c933f09 100644 --- a/src/conf.c +++ b/src/conf.c @@ -4,7 +4,7 @@ 1998-2005 Ivo Timmermans 2000-2014 Guus Sliepen 2010-2011 Julien Muchembled - 2000 Cris van Pelt + 2000 Cris van Pelt This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -28,18 +28,18 @@ #include "conf.h" #include "list.h" #include "logger.h" -#include "netutl.h" /* for str2address */ +#include "netutl.h" /* for str2address */ #include "protocol.h" -#include "utils.h" /* for cp */ +#include "utils.h" /* for cp */ #include "xalloc.h" avl_tree_t *config_tree; -int pinginterval = 0; /* seconds between pings */ -int pingtimeout = 0; /* seconds to wait for response */ -char *confbase = NULL; /* directory in which all config files are */ -char *netname = NULL; /* name of the vpn network */ -list_t *cmdline_conf = NULL; /* global/host configuration values given at the command line */ +int pinginterval = 0; /* seconds between pings */ +int pingtimeout = 0; /* seconds to wait for response */ +char *confbase = NULL; /* directory in which all config files are */ +char *netname = NULL; /* name of the vpn network */ +list_t *cmdline_conf = NULL; /* global/host configuration values given at the command line */ static int config_compare(const config_t *a, const config_t *b) { @@ -47,27 +47,31 @@ static int config_compare(const config_t *a, const config_t *b) { result = strcasecmp(a->variable, b->variable); - if(result) + if(result) { return result; + } /* give priority to command line options */ result = !b->file - !a->file; - if (result) + + if(result) { return result; + } result = a->line - b->line; - if(result) + if(result) { return result; - else + } else { return a->file ? strcmp(a->file, b->file) : 0; + } } -void init_configuration(avl_tree_t ** config_tree) { +void init_configuration(avl_tree_t **config_tree) { *config_tree = avl_alloc_tree((avl_compare_t) config_compare, (avl_action_t) free_config); } -void exit_configuration(avl_tree_t ** config_tree) { +void exit_configuration(avl_tree_t **config_tree) { avl_delete_tree(*config_tree); *config_tree = NULL; } @@ -77,14 +81,17 @@ config_t *new_config(void) { } void free_config(config_t *cfg) { - if(cfg->variable) + if(cfg->variable) { free(cfg->variable); + } - if(cfg->value) + if(cfg->value) { free(cfg->value); + } - if(cfg->file) + if(cfg->file) { free(cfg->file); + } free(cfg); } @@ -102,11 +109,13 @@ config_t *lookup_config(const avl_tree_t *config_tree, char *variable) { found = avl_search_closest_greater(config_tree, &cfg); - if(!found) + if(!found) { return NULL; + } - if(strcasecmp(found->variable, variable)) + if(strcasecmp(found->variable, variable)) { return NULL; + } return found; } @@ -121,8 +130,9 @@ config_t *lookup_config_next(const avl_tree_t *config_tree, const config_t *cfg) if(node->next) { found = node->next->data; - if(!strcasecmp(found->variable, cfg->variable)) + if(!strcasecmp(found->variable, cfg->variable)) { return found; + } } } @@ -130,8 +140,9 @@ config_t *lookup_config_next(const avl_tree_t *config_tree, const config_t *cfg) } bool get_config_bool(const config_t *cfg, bool *result) { - if(!cfg) + if(!cfg) { return false; + } if(!strcasecmp(cfg->value, "yes")) { *result = true; @@ -142,27 +153,30 @@ bool get_config_bool(const config_t *cfg, bool *result) { } logger(LOG_ERR, "\"yes\" or \"no\" expected for configuration variable %s in %s line %d", - cfg->variable, cfg->file, cfg->line); + cfg->variable, cfg->file, cfg->line); return false; } bool get_config_int(const config_t *cfg, int *result) { - if(!cfg) + if(!cfg) { return false; + } - if(sscanf(cfg->value, "%d", result) == 1) + if(sscanf(cfg->value, "%d", result) == 1) { return true; + } logger(LOG_ERR, "Integer expected for configuration variable %s in %s line %d", - cfg->variable, cfg->file, cfg->line); + cfg->variable, cfg->file, cfg->line); return false; } bool get_config_string(const config_t *cfg, char **result) { - if(!cfg) + if(!cfg) { return false; + } *result = xstrdup(cfg->value); @@ -172,8 +186,9 @@ bool get_config_string(const config_t *cfg, char **result) { bool get_config_address(const config_t *cfg, struct addrinfo **result) { struct addrinfo *ai; - if(!cfg) + if(!cfg) { return false; + } ai = str2addrinfo(cfg->value, NULL, 0); @@ -183,31 +198,32 @@ bool get_config_address(const config_t *cfg, struct addrinfo **result) { } logger(LOG_ERR, "Hostname or IP address expected for configuration variable %s in %s line %d", - cfg->variable, cfg->file, cfg->line); + cfg->variable, cfg->file, cfg->line); return false; } -bool get_config_subnet(const config_t *cfg, subnet_t ** result) { - subnet_t subnet = {NULL}; +bool get_config_subnet(const config_t *cfg, subnet_t **result) { + subnet_t subnet = {}; - if(!cfg) + if(!cfg) { return false; + } if(!str2net(&subnet, cfg->value)) { logger(LOG_ERR, "Subnet expected for configuration variable %s in %s line %d", - cfg->variable, cfg->file, cfg->line); + cfg->variable, cfg->file, cfg->line); return false; } /* Teach newbies what subnets are... */ if(((subnet.type == SUBNET_IPV4) - && !maskcheck(&subnet.net.ipv4.address, subnet.net.ipv4.prefixlength, sizeof(ipv4_t))) - || ((subnet.type == SUBNET_IPV6) - && !maskcheck(&subnet.net.ipv6.address, subnet.net.ipv6.prefixlength, sizeof(ipv6_t)))) { + && !maskcheck(&subnet.net.ipv4.address, subnet.net.ipv4.prefixlength, sizeof(ipv4_t))) + || ((subnet.type == SUBNET_IPV6) + && !maskcheck(&subnet.net.ipv6.address, subnet.net.ipv6.prefixlength, sizeof(ipv6_t)))) { logger(LOG_ERR, "Network address and prefix length do not match for configuration variable %s in %s line %d", - cfg->variable, cfg->file, cfg->line); + cfg->variable, cfg->file, cfg->line); return false; } @@ -219,26 +235,31 @@ bool get_config_subnet(const config_t *cfg, subnet_t ** result) { /* Read exactly one line and strip the trailing newline if any. */ -static char *readline(FILE * fp, char *buf, size_t buflen) { +static char *readline(FILE *fp, char *buf, size_t buflen) { char *newline = NULL; char *p; - if(feof(fp)) + if(feof(fp)) { return NULL; + } p = fgets(buf, buflen, fp); - if(!p) + if(!p) { return NULL; + } newline = strchr(p, '\n'); - if(!newline) + if(!newline) { return buf; + } - *newline = '\0'; /* kill newline */ - if(newline > p && newline[-1] == '\r') /* and carriage return if necessary */ + *newline = '\0'; /* kill newline */ + + if(newline > p && newline[-1] == '\r') { /* and carriage return if necessary */ newline[-1] = '\0'; + } return buf; } @@ -250,26 +271,32 @@ config_t *parse_config_line(char *line, const char *fname, int lineno) { variable = value = line; eol = line + strlen(line); - while(strchr("\t ", *--eol)) + + while(strchr("\t ", *--eol)) { *eol = '\0'; + } len = strcspn(value, "\t ="); value += len; value += strspn(value, "\t "); + if(*value == '=') { value++; value += strspn(value, "\t "); } + variable[len] = '\0'; if(!*value) { const char err[] = "No value for variable"; - if (fname) + + if(fname) logger(LOG_ERR, "%s `%s' on line %d while reading config file %s", - err, variable, lineno, fname); + err, variable, lineno, fname); else logger(LOG_ERR, "%s `%s' in command line option %d", - err, variable, lineno); + err, variable, lineno); + return NULL; } @@ -303,33 +330,41 @@ bool read_config_file(avl_tree_t *config_tree, const char *fname) { } for(;;) { - line = readline(fp, buffer, sizeof buffer); + line = readline(fp, buffer, sizeof(buffer)); if(!line) { - if(feof(fp)) + if(feof(fp)) { result = true; + } + break; } lineno++; - if(!*line || *line == '#') - continue; - - if(ignore) { - if(!strncmp(line, "-----END", 8)) - ignore = false; + if(!*line || *line == '#') { continue; } - + + if(ignore) { + if(!strncmp(line, "-----END", 8)) { + ignore = false; + } + + continue; + } + if(!strncmp(line, "-----BEGIN", 10)) { ignore = true; continue; } cfg = parse_config_line(line, fname, lineno); - if (!cfg) + + if(!cfg) { break; + } + config_add(config_tree, cfg); } @@ -339,86 +374,88 @@ bool read_config_file(avl_tree_t *config_tree, const char *fname) { } void read_config_options(avl_tree_t *config_tree, const char *prefix) { - list_node_t *node, *next; size_t prefix_len = prefix ? strlen(prefix) : 0; - for(node = cmdline_conf->tail; node; node = next) { - config_t *orig_cfg, *cfg = (config_t *)node->data; - next = node->prev; + for(const list_node_t *node = cmdline_conf->tail; node; node = node->prev) { + const config_t *cfg = node->data; if(!prefix) { - if(strchr(cfg->variable, '.')) + if(strchr(cfg->variable, '.')) { continue; - node->data = NULL; - list_unlink_node(cmdline_conf, node); + } } else { if(strncmp(prefix, cfg->variable, prefix_len) || - cfg->variable[prefix_len] != '.') + cfg->variable[prefix_len] != '.') { continue; - /* Because host configuration is parsed again when - reconnecting, nodes must not be freed when a prefix - is given. */ - orig_cfg = cfg; - cfg = new_config(); - cfg->variable = xstrdup(orig_cfg->variable + prefix_len + 1); - cfg->value = xstrdup(orig_cfg->value); - cfg->file = NULL; - cfg->line = orig_cfg->line; + } } - config_add(config_tree, cfg); + + config_t *new = new_config(); + + if(prefix) { + new->variable = xstrdup(cfg->variable + prefix_len + 1); + } else { + new->variable = xstrdup(cfg->variable); + } + + new->value = xstrdup(cfg->value); + new->file = NULL; + new->line = cfg->line; + + config_add(config_tree, new); } } bool read_server_config(void) { - char *fname; + char fname[PATH_MAX]; bool x; read_config_options(config_tree, NULL); - xasprintf(&fname, "%s/tinc.conf", confbase); + snprintf(fname, sizeof(fname), "%s/tinc.conf", confbase); + errno = 0; x = read_config_file(config_tree, fname); // We will try to read the conf files in the "conf.d" dir - if (x) { - char * dname; - xasprintf(&dname, "%s/conf.d", confbase); - DIR *dir = opendir (dname); + if(x) { + char dname[PATH_MAX]; + snprintf(dname, sizeof(dname), "%s/conf.d", confbase); + DIR *dir = opendir(dname); + // If we can find this dir - if (dir) { + if(dir) { struct dirent *ep; + // We list all the files in it - while (x && (ep = readdir (dir))) { + while(x && (ep = readdir(dir))) { size_t l = strlen(ep->d_name); + // And we try to read the ones that end with ".conf" - if (l > 5 && !strcmp(".conf", & ep->d_name[ l - 5 ])) { - free(fname); - xasprintf(&fname, "%s/%s", dname, ep->d_name); + if(l > 5 && !strcmp(".conf", & ep->d_name[ l - 5 ])) { + snprintf(fname, sizeof(fname), "%s/%s", dname, ep->d_name); x = read_config_file(config_tree, fname); } } - closedir (dir); + + closedir(dir); } - free(dname); } - if(!x) { /* System error: complain */ + if(!x && errno) { logger(LOG_ERR, "Failed to read `%s': %s", fname, strerror(errno)); } - free(fname); - return x; } bool read_connection_config(connection_t *c) { - char *fname; + char fname[PATH_MAX]; bool x; read_config_options(c->config_tree, c->name); - xasprintf(&fname, "%s/hosts/%s", confbase, c->name); + snprintf(fname, sizeof(fname), "%s/hosts/%s", confbase, c->name); x = read_config_file(c->config_tree, fname); - free(fname); return x; } @@ -430,34 +467,38 @@ static void disable_old_keys(const char *filename) { FILE *r, *w; r = fopen(filename, "r"); - if(!r) - return; - snprintf(tmpfile, sizeof tmpfile, "%s.tmp", filename); + if(!r) { + return; + } + + snprintf(tmpfile, sizeof(tmpfile), "%s.tmp", filename); w = fopen(tmpfile, "w"); - while(fgets(buf, sizeof buf, r)) { - if(!strncmp(buf, "-----BEGIN RSA", 14)) { + while(fgets(buf, sizeof(buf), r)) { + if(!strncmp(buf, "-----BEGIN RSA", 14)) { buf[11] = 'O'; buf[12] = 'L'; buf[13] = 'D'; disabled = true; - } - else if(!strncmp(buf, "-----END RSA", 12)) { + } else if(!strncmp(buf, "-----END RSA", 12)) { buf[ 9] = 'O'; buf[10] = 'L'; buf[11] = 'D'; disabled = true; } + if(w && fputs(buf, w) < 0) { disabled = false; break; } } - if(w) + if(w) { fclose(w); + } + fclose(r); if(!w && disabled) { @@ -469,10 +510,12 @@ static void disable_old_keys(const char *filename) { #ifdef HAVE_MINGW // We cannot atomically replace files on Windows. char bakfile[PATH_MAX] = ""; - snprintf(bakfile, sizeof bakfile, "%s.bak", filename); + snprintf(bakfile, sizeof(bakfile), "%s.bak", filename); + if(rename(filename, bakfile) || rename(tmpfile, filename)) { rename(bakfile, filename); #else + if(rename(tmpfile, filename)) { #endif fprintf(stderr, "Warning: old key(s) found, remove them by hand!\n"); @@ -489,8 +532,9 @@ static void disable_old_keys(const char *filename) { FILE *ask_and_open(const char *filename, const char *what) { FILE *r; - char *directory; + char directory[PATH_MAX]; char line[PATH_MAX]; + char abspath[PATH_MAX]; const char *fn; /* Check stdin and stdout */ @@ -502,37 +546,38 @@ FILE *ask_and_open(const char *filename, const char *what) { } else { /* Ask for a file and/or directory name. */ fprintf(stdout, "Please enter a file to save %s to [%s]: ", - what, filename); + what, filename); fflush(stdout); - fn = readline(stdin, line, sizeof line); + fn = readline(stdin, line, sizeof(line)); if(!fn) { fprintf(stderr, "Error while reading stdin: %s\n", - strerror(errno)); + strerror(errno)); return NULL; } if(!strlen(fn)) /* User just pressed enter. */ + { fn = filename; + } } #ifdef HAVE_MINGW + if(fn[0] != '\\' && fn[0] != '/' && !strchr(fn, ':')) { #else + if(fn[0] != '/') { #endif /* The directory is a relative path or a filename. */ - char *p; - - directory = get_current_dir_name(); - xasprintf(&p, "%s/%s", directory, fn); - free(directory); - fn = p; + getcwd(directory, sizeof(directory)); + snprintf(abspath, sizeof(abspath), "%s/%s", directory, fn); + fn = abspath; } - umask(0077); /* Disallow everything for group and other */ + umask(0077); /* Disallow everything for group and other */ disable_old_keys(fn); @@ -542,7 +587,7 @@ FILE *ask_and_open(const char *filename, const char *what) { if(!r) { fprintf(stderr, "Error opening file `%s': %s\n", - fn, strerror(errno)); + fn, strerror(errno)); return NULL; } diff --git a/src/conf.h b/src/conf.h index 59c081c..770ada7 100644 --- a/src/conf.h +++ b/src/conf.h @@ -1,3 +1,6 @@ +#ifndef TINC_CONF_H +#define TINC_CONF_H + /* conf.h -- header for conf.c Copyright (C) 1998-2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_CONF_H__ -#define __TINC_CONF_H__ - #include "avl_tree.h" #include "list.h" @@ -44,25 +44,24 @@ extern char *confbase; extern char *netname; extern list_t *cmdline_conf; -extern void init_configuration(avl_tree_t **); -extern void exit_configuration(avl_tree_t **); -extern config_t *new_config(void) __attribute__ ((__malloc__)); -extern void free_config(config_t *); -extern void config_add(avl_tree_t *, config_t *); -extern config_t *lookup_config(const avl_tree_t *, char *); -extern config_t *lookup_config_next(const avl_tree_t *, const config_t *); -extern bool get_config_bool(const config_t *, bool *); -extern bool get_config_int(const config_t *, int *); -extern bool get_config_string(const config_t *, char **); -extern bool get_config_address(const config_t *, struct addrinfo **); -extern bool get_config_subnet(const config_t *, struct subnet_t **); +extern void init_configuration(avl_tree_t **config_tree); +extern void exit_configuration(avl_tree_t **config_tree); +extern config_t *new_config(void) __attribute__((__malloc__)); +extern void free_config(config_t *cfg); +extern void config_add(avl_tree_t *config_tree, config_t *cfg); +extern config_t *lookup_config(const avl_tree_t *config_tree, char *variable); +extern config_t *lookup_config_next(const avl_tree_t *config_tree, const config_t *cfg); +extern bool get_config_bool(const config_t *cfg, bool *result); +extern bool get_config_int(const config_t *cfg, int *result); +extern bool get_config_string(const config_t *cfg, char **result); +extern bool get_config_address(const config_t *cfg, struct addrinfo **result); +extern bool get_config_subnet(const config_t *cfg, struct subnet_t **result); -extern config_t *parse_config_line(char *, const char *, int); -extern bool read_config_file(avl_tree_t *, const char *); -extern void read_config_options(avl_tree_t *, const char *); +extern config_t *parse_config_line(char *line, const char *fname, int lineno); +extern bool read_config_file(avl_tree_t *config_tree, const char *fname); +extern void read_config_options(avl_tree_t *config_tree, const char *prefix); extern bool read_server_config(void); -extern bool read_connection_config(struct connection_t *); -extern FILE *ask_and_open(const char *, const char *); -extern bool is_safe_path(const char *); +extern bool read_connection_config(struct connection_t *c); +extern FILE *ask_and_open(const char *fname, const char *what); -#endif /* __TINC_CONF_H__ */ +#endif diff --git a/src/connection.c b/src/connection.c index d27e6fd..38b3ccf 100644 --- a/src/connection.c +++ b/src/connection.c @@ -28,7 +28,7 @@ #include "utils.h" #include "xalloc.h" -avl_tree_t *connection_tree; /* Meta connections */ +avl_tree_t *connection_tree; /* Meta connections */ connection_t *everyone; static int connection_compare(const connection_t *a, const connection_t *b) { @@ -52,8 +52,9 @@ connection_t *new_connection(void) { c = xmalloc_and_zero(sizeof(connection_t)); - if(!c) + if(!c) { return NULL; + } gettimeofday(&c->start, NULL); @@ -118,8 +119,9 @@ void free_connection(connection_t *c) { free(c->name); free(c->hostname); - if(c->config_tree) + if(c->config_tree) { exit_configuration(&c->config_tree); + } free(c); } @@ -141,8 +143,8 @@ void dump_connections(void) { for(node = connection_tree->head; node; node = node->next) { c = node->data; logger(LOG_DEBUG, " %s at %s options %x socket %d status %04x outbuf %d/%d/%d", - c->name, c->hostname, c->options, c->socket, bitfield_to_int(&c->status, sizeof c->status), - c->outbufsize, c->outbufstart, c->outbuflen); + c->name, c->hostname, c->options, c->socket, bitfield_to_int(&c->status, sizeof(c->status)), + c->outbufsize, c->outbufstart, c->outbuflen); } logger(LOG_DEBUG, "End of connections."); diff --git a/src/connection.h b/src/connection.h index 099d9d3..8c2d9f3 100644 --- a/src/connection.h +++ b/src/connection.h @@ -1,3 +1,6 @@ +#ifndef TINC_CONNECTION_H +#define TINC_CONNECTION_H + /* connection.h -- header for connection.c Copyright (C) 2000-2016 Guus Sliepen , @@ -18,31 +21,28 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_CONNECTION_H__ -#define __TINC_CONNECTION_H__ - #include #include #include "avl_tree.h" -#define OPTION_INDIRECT 0x0001 -#define OPTION_TCPONLY 0x0002 -#define OPTION_PMTU_DISCOVERY 0x0004 -#define OPTION_CLAMP_MSS 0x0008 +#define OPTION_INDIRECT 0x0001 +#define OPTION_TCPONLY 0x0002 +#define OPTION_PMTU_DISCOVERY 0x0004 +#define OPTION_CLAMP_MSS 0x0008 typedef struct connection_status_t { - unsigned int pinged:1; /* sent ping */ - unsigned int active:1; /* 1 if active.. */ - unsigned int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */ - unsigned int unused_termreq:1; /* the termination of this connection was requested */ - unsigned int remove:1; /* Set to 1 if you want this connection removed */ - unsigned int timeout:1; /* 1 if gotten timeout */ - unsigned int encryptout:1; /* 1 if we can encrypt outgoing traffic */ - unsigned int decryptin:1; /* 1 if we have to decrypt incoming traffic */ - unsigned int mst:1; /* 1 if this connection is part of a minimum spanning tree */ - unsigned int proxy_passed:1; /* 1 if we are connecting via a proxy and we have finished talking with it */ - unsigned int unused:22; + unsigned int pinged: 1; /* sent ping */ + unsigned int active: 1; /* 1 if active.. */ + unsigned int connecting: 1; /* 1 if we are waiting for a non-blocking connect() to finish */ + unsigned int unused_termreq: 1; /* the termination of this connection was requested */ + unsigned int remove: 1; /* Set to 1 if you want this connection removed */ + unsigned int timeout: 1; /* 1 if gotten timeout */ + unsigned int encryptout: 1; /* 1 if we can encrypt outgoing traffic */ + unsigned int decryptin: 1; /* 1 if we have to decrypt incoming traffic */ + unsigned int mst: 1; /* 1 if this connection is part of a minimum spanning tree */ + unsigned int proxy_passed: 1; /* 1 if we are connecting via a proxy and we have finished talking with it */ + unsigned int unused: 22; } connection_status_t; #include "edge.h" @@ -50,57 +50,57 @@ typedef struct connection_status_t { #include "node.h" typedef struct connection_t { - char *name; /* name he claims to have */ + char *name; /* name he claims to have */ - union sockaddr_t address; /* his real (internet) ip */ - char *hostname; /* the hostname of its real ip */ - int protocol_version; /* used protocol */ + union sockaddr_t address; /* his real (internet) ip */ + char *hostname; /* the hostname of its real ip */ + int protocol_version; /* used protocol */ - int socket; /* socket used for this connection */ - uint32_t options; /* options for this connection */ - connection_status_t status; /* status info */ - int estimated_weight; /* estimation for the weight of the edge for this connection */ - struct timeval start; /* time this connection was started, used for above estimation */ - struct outgoing_t *outgoing; /* used to keep track of outgoing connections */ + int socket; /* socket used for this connection */ + uint32_t options; /* options for this connection */ + connection_status_t status; /* status info */ + int estimated_weight; /* estimation for the weight of the edge for this connection */ + struct timeval start; /* time this connection was started, used for above estimation */ + struct outgoing_t *outgoing; /* used to keep track of outgoing connections */ - struct node_t *node; /* node associated with the other end */ - struct edge_t *edge; /* edge associated with this connection */ + struct node_t *node; /* node associated with the other end */ + struct edge_t *edge; /* edge associated with this connection */ - RSA *rsa_key; /* his public/private key */ - const EVP_CIPHER *incipher; /* Cipher he will use to send data to us */ - const EVP_CIPHER *outcipher; /* Cipher we will use to send data to him */ - EVP_CIPHER_CTX *inctx; /* Context of encrypted meta data that will come from him to us */ - EVP_CIPHER_CTX *outctx; /* Context of encrypted meta data that will be sent from us to him */ + RSA *rsa_key; /* his public/private key */ + const EVP_CIPHER *incipher; /* Cipher he will use to send data to us */ + const EVP_CIPHER *outcipher; /* Cipher we will use to send data to him */ + EVP_CIPHER_CTX *inctx; /* Context of encrypted meta data that will come from him to us */ + EVP_CIPHER_CTX *outctx; /* Context of encrypted meta data that will be sent from us to him */ uint64_t inbudget; /* Encrypted bytes send budget */ uint64_t outbudget; /* Encrypted bytes receive budget */ - char *inkey; /* His symmetric meta key + iv */ - char *outkey; /* Our symmetric meta key + iv */ - int inkeylength; /* Length of his key + iv */ - int outkeylength; /* Length of our key + iv */ + char *inkey; /* His symmetric meta key + iv */ + char *outkey; /* Our symmetric meta key + iv */ + int inkeylength; /* Length of his key + iv */ + int outkeylength; /* Length of our key + iv */ const EVP_MD *indigest; const EVP_MD *outdigest; int inmaclength; int outmaclength; int incompression; int outcompression; - char *mychallenge; /* challenge we received from him */ - char *hischallenge; /* challenge we sent to him */ + char *mychallenge; /* challenge we received from him */ + char *hischallenge; /* challenge we sent to him */ - char buffer[MAXBUFSIZE]; /* metadata input buffer */ - int buflen; /* bytes read into buffer */ - int reqlen; /* length of incoming request */ - int tcplen; /* length of incoming TCPpacket */ - int allow_request; /* defined if there's only one request possible */ + char buffer[MAXBUFSIZE]; /* metadata input buffer */ + int buflen; /* bytes read into buffer */ + int reqlen; /* length of incoming request */ + length_t tcplen; /* length of incoming TCPpacket */ + int allow_request; /* defined if there's only one request possible */ - char *outbuf; /* metadata output buffer */ - int outbufstart; /* index of first meaningful byte in output buffer */ - int outbuflen; /* number of meaningful bytes in output buffer */ - int outbufsize; /* number of bytes allocated to output buffer */ + char *outbuf; /* metadata output buffer */ + int outbufstart; /* index of first meaningful byte in output buffer */ + int outbuflen; /* number of meaningful bytes in output buffer */ + int outbufsize; /* number of bytes allocated to output buffer */ - time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */ - time_t last_flushed_time; /* last time buffer was empty. Only meaningful if outbuflen > 0 */ + time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */ + time_t last_flushed_time; /* last time buffer was empty. Only meaningful if outbuflen > 0 */ - avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */ + avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */ } connection_t; extern avl_tree_t *connection_tree; @@ -108,11 +108,11 @@ extern connection_t *everyone; extern void init_connections(void); extern void exit_connections(void); -extern connection_t *new_connection(void) __attribute__ ((__malloc__)); -extern void free_connection(connection_t *); -extern void free_connection_partially(connection_t *); -extern void connection_add(connection_t *); -extern void connection_del(connection_t *); +extern connection_t *new_connection(void) __attribute__((__malloc__)); +extern void free_connection(connection_t *c); +extern void free_connection_partially(connection_t *c); +extern void connection_add(connection_t *c); +extern void connection_del(connection_t *c); extern void dump_connections(void); -#endif /* __TINC_CONNECTION_H__ */ +#endif diff --git a/src/cygwin/device.c b/src/cygwin/device.c index 9fce9be..1165d67 100644 --- a/src/cygwin/device.c +++ b/src/cygwin/device.c @@ -37,7 +37,7 @@ int device_fd = -1; static HANDLE device_handle = INVALID_HANDLE_VALUE; char *device = NULL; char *iface = NULL; -static char *device_info = NULL; +static const char *device_info = "Windows tap device"; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; @@ -61,8 +61,9 @@ static bool setup_device(void) { get_config_string(lookup_config(config_tree, "Device"), &device); get_config_string(lookup_config(config_tree, "Interface"), &iface); - if(device && iface) + if(device && iface) { logger(LOG_WARNING, "Warning: both Device and Interface specified, results may not be as expected"); + } /* Open registry and look for network adapters */ @@ -71,44 +72,51 @@ static bool setup_device(void) { return false; } - for (i = 0; ; i++) { + for(i = 0; ; i++) { len = sizeof(adapterid); - if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL)) + + if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL)) { break; + } /* Find out more about this adapter */ snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", NETWORK_CONNECTIONS_KEY, adapterid); - if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, regpath, 0, KEY_READ, &key2)) + if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, regpath, 0, KEY_READ, &key2)) { continue; + } len = sizeof(adaptername); err = RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len); RegCloseKey(key2); - if(err) + if(err) { continue; + } if(device) { if(!strcmp(device, adapterid)) { found = true; break; - } else + } else { continue; + } } if(iface) { if(!strcmp(iface, adaptername)) { found = true; break; - } else + } else { continue; + } } snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adapterid); device_handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0); + if(device_handle != INVALID_HANDLE_VALUE) { CloseHandle(device_handle); found = true; @@ -123,14 +131,16 @@ static bool setup_device(void) { return false; } - if(!device) + if(!device) { device = xstrdup(adapterid); + } - if(!iface) + if(!iface) { iface = xstrdup(adaptername); + } snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, device); - + /* Now we are going to open this device twice: once for reading and once for writing. We do this because apparently it isn't possible to check for activity in the select() loop. Furthermore I don't really know how to do it the "Windows" way. */ @@ -141,9 +151,9 @@ static bool setup_device(void) { } /* The parent opens the tap device for writing. */ - - device_handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0); - + + device_handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0); + if(device_handle == INVALID_HANDLE_VALUE) { logger(LOG_ERR, "Could not open Windows tap device %s (%s) for writing: %s", device, iface, winerror(GetLastError())); return false; @@ -174,7 +184,7 @@ static bool setup_device(void) { if(!reader_pid) { /* The child opens the tap device for reading, blocking. It passes everything it reads to the socket. */ - + char buf[MTU]; long lenin; @@ -205,13 +215,12 @@ static bool setup_device(void) { } read(device_fd, &gelukt, 1); + if(gelukt != 1) { logger(LOG_DEBUG, "Tap reader failed!"); return false; } - device_info = "Windows tap device"; - logger(LOG_INFO, "%s (%s) is a %s", device, iface, device_info); return true; @@ -233,16 +242,16 @@ static bool read_packet(vpn_packet_t *packet) { if((lenin = read(sp[0], packet->data, MTU)) <= 0) { logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); + device, strerror(errno)); return false; } - + packet->len = lenin; device_total_in += packet->len; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, - device_info); + device_info); return true; } @@ -251,9 +260,9 @@ static bool write_packet(vpn_packet_t *packet) { long lenout; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); - if(!WriteFile (device_handle, packet->data, packet->len, &lenout, NULL)) { + if(!WriteFile(device_handle, packet->data, packet->len, &lenout, NULL)) { logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, device, winerror(GetLastError())); return false; } diff --git a/src/device.h b/src/device.h index a3c2914..6bfc44d 100644 --- a/src/device.h +++ b/src/device.h @@ -1,3 +1,6 @@ +#ifndef TINC_DEVICE_H +#define TINC_DEVICE_H + /* device.h -- generic header for device.c Copyright (C) 2001-2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_DEVICE_H__ -#define __TINC_DEVICE_H__ - #include "net.h" extern int device_fd; @@ -31,8 +31,8 @@ extern char *iface; typedef struct devops_t { bool (*setup)(void); void (*close)(void); - bool (*read)(struct vpn_packet_t *); - bool (*write)(struct vpn_packet_t *); + bool (*read)(struct vpn_packet_t *packet); + bool (*write)(struct vpn_packet_t *packet); void (*dump_stats)(void); } devops_t; @@ -44,4 +44,4 @@ extern const devops_t uml_devops; extern const devops_t vde_devops; extern devops_t devops; -#endif /* __TINC_DEVICE_H__ */ +#endif diff --git a/src/dropin.c b/src/dropin.c index a99c828..93511f1 100644 --- a/src/dropin.c +++ b/src/dropin.c @@ -25,7 +25,7 @@ #ifndef HAVE_DAEMON /* Replacement for the daemon() function. - + The daemon() function is for programs wishing to detach themselves from the controlling terminal and run in the background as system daemons. @@ -50,8 +50,9 @@ int daemon(int nochdir, int noclose) { } /* If we are the parent, terminate */ - if(pid) + if(pid) { exit(0); + } /* Detach by becoming the new process group leader */ if(setsid() < 0) { @@ -86,40 +87,6 @@ int daemon(int nochdir, int noclose) { } #endif -#ifndef HAVE_GET_CURRENT_DIR_NAME -/* - Replacement for the GNU get_current_dir_name function: - - get_current_dir_name will malloc(3) an array big enough to hold the - current directory name. If the environment variable PWD is set, and - its value is correct, then that value will be returned. -*/ -char *get_current_dir_name(void) { - size_t size; - char *buf; - char *r; - - /* Start with 100 bytes. If this turns out to be insufficient to - contain the working directory, double the size. */ - size = 100; - buf = xmalloc(size); - - errno = 0; /* Success */ - r = getcwd(buf, size); - - /* getcwd returns NULL and sets errno to ERANGE if the bufferspace - is insufficient to contain the entire working directory. */ - while(r == NULL && errno == ERANGE) { - free(buf); - size <<= 1; /* double the size */ - buf = xmalloc(size); - r = getcwd(buf, size); - } - - return buf; -} -#endif - #ifndef HAVE_ASPRINTF int asprintf(char **buf, const char *fmt, ...) { int result; @@ -143,8 +110,9 @@ int vasprintf(char **buf, const char *fmt, va_list ap) { buf[len - 1] = 0; va_end(aq); - if(status >= 0) + if(status >= 0) { *buf = xrealloc(*buf, status + 1); + } if(status > len - 1) { len = status; diff --git a/src/dropin.h b/src/dropin.h index dc7dbee..012099b 100644 --- a/src/dropin.h +++ b/src/dropin.h @@ -1,3 +1,6 @@ +#ifndef TINC_DROPIN_H +#define TINC_DROPIN_H + /* dropin.h -- header file for dropin.c Copyright (C) 2000-2005 Ivo Timmermans, @@ -18,14 +21,11 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __DROPIN_H__ -#define __DROPIN_H__ - #include "fake-getaddrinfo.h" #include "fake-getnameinfo.h" #ifndef HAVE_DAEMON -extern int daemon(int, int); +extern int daemon(int nochdir, int noclose); #endif #ifndef HAVE_GET_CURRENT_DIR_NAME @@ -33,16 +33,16 @@ extern char *get_current_dir_name(void); #endif #ifndef HAVE_ASPRINTF -extern int asprintf(char **, const char *, ...); -extern int vasprintf(char **, const char *, va_list ap); +extern int asprintf(char **buf, const char *fmt, ...); +extern int vasprintf(char **buf, const char *fmt, va_list ap); #endif #ifndef HAVE_GETTIMEOFDAY -extern int gettimeofday(struct timeval *, void *); +extern int gettimeofday(struct timeval *tv, void *tz); #endif #ifndef HAVE_USLEEP -extern int usleep(long long); +extern int usleep(long long usec); #endif -#endif /* __DROPIN_H__ */ +#endif diff --git a/src/dummy_device.c b/src/dummy_device.c index 9dd3fae..4b01072 100644 --- a/src/dummy_device.c +++ b/src/dummy_device.c @@ -22,15 +22,16 @@ #include "device.h" #include "logger.h" #include "net.h" +#include "xalloc.h" -static char *device_info = "dummy device"; +static const char *device_info = "dummy device"; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; static bool setup_device(void) { - device = "dummy"; - iface = "dummy"; + device = xstrdup("dummy"); + iface = xstrdup("dummy"); logger(LOG_INFO, "%s (%s) is a %s", device, iface, device_info); return true; } @@ -39,6 +40,7 @@ static void close_device(void) { } static bool read_packet(vpn_packet_t *packet) { + (void)packet; return false; } diff --git a/src/edge.c b/src/edge.c index e42dbd1..c30d6cc 100644 --- a/src/edge.c +++ b/src/edge.c @@ -28,7 +28,7 @@ #include "utils.h" #include "xalloc.h" -avl_tree_t *edge_weight_tree; /* Tree with all edges, sorted on weight */ +avl_tree_t *edge_weight_tree; /* Tree with all edges, sorted on weight */ static int edge_compare(const edge_t *a, const edge_t *b) { return strcmp(a->to->name, b->to->name); @@ -39,13 +39,15 @@ static int edge_weight_compare(const edge_t *a, const edge_t *b) { result = a->weight - b->weight; - if(result) + if(result) { return result; + } result = strcmp(a->from->name, b->from->name); - if(result) + if(result) { return result; + } return strcmp(a->to->name, b->to->name); } @@ -84,13 +86,15 @@ void edge_add(edge_t *e) { e->reverse = lookup_edge(e->to, e->from); - if(e->reverse) + if(e->reverse) { e->reverse->reverse = e; + } } void edge_del(edge_t *e) { - if(e->reverse) + if(e->reverse) { e->reverse->reverse = NULL; + } avl_delete(edge_weight_tree, e); avl_delete(e->from->edge_tree, e); @@ -98,7 +102,7 @@ void edge_del(edge_t *e) { edge_t *lookup_edge(node_t *from, node_t *to) { edge_t v; - + v.from = from; v.to = to; @@ -115,11 +119,12 @@ void dump_edges(void) { for(node = node_tree->head; node; node = node->next) { n = node->data; + for(node2 = n->edge_tree->head; node2; node2 = node2->next) { e = node2->data; address = sockaddr2hostname(&e->address); logger(LOG_DEBUG, " %s to %s at %s options %x weight %d", - e->from->name, e->to->name, address, e->options, e->weight); + e->from->name, e->to->name, address, e->options, e->weight); free(address); } } diff --git a/src/edge.h b/src/edge.h index 4c65213..a7a6302 100644 --- a/src/edge.h +++ b/src/edge.h @@ -1,3 +1,6 @@ +#ifndef TINC_EDGE_H +#define TINC_EDGE_H + /* edge.h -- header for edge.c Copyright (C) 2001-2006 Guus Sliepen , @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_EDGE_H__ -#define __TINC_EDGE_H__ - #include "avl_tree.h" #include "connection.h" #include "net.h" @@ -31,24 +31,24 @@ typedef struct edge_t { struct node_t *to; sockaddr_t address; - uint32_t options; /* options turned on for this edge */ - int weight; /* weight of this edge */ + uint32_t options; /* options turned on for this edge */ + int weight; /* weight of this edge */ - struct connection_t *connection; /* connection associated with this edge, if available */ - struct edge_t *reverse; /* edge in the opposite direction, if available */ + struct connection_t *connection; /* connection associated with this edge, if available */ + struct edge_t *reverse; /* edge in the opposite direction, if available */ } edge_t; -extern avl_tree_t *edge_weight_tree; /* Tree with all known edges sorted on weight */ +extern avl_tree_t *edge_weight_tree; /* Tree with all known edges sorted on weight */ extern void init_edges(void); extern void exit_edges(void); -extern edge_t *new_edge(void) __attribute__ ((__malloc__)); -extern void free_edge(edge_t *); -extern avl_tree_t *new_edge_tree(void) __attribute__ ((__malloc__)); -extern void free_edge_tree(avl_tree_t *); -extern void edge_add(edge_t *); -extern void edge_del(edge_t *); -extern edge_t *lookup_edge(struct node_t *, struct node_t *); +extern edge_t *new_edge(void) __attribute__((__malloc__)); +extern void free_edge(edge_t *e); +extern avl_tree_t *new_edge_tree(void) __attribute__((__malloc__)); +extern void free_edge_tree(avl_tree_t *edge_tree); +extern void edge_add(edge_t *e); +extern void edge_del(edge_t *e); +extern edge_t *lookup_edge(struct node_t *from, struct node_t *to); extern void dump_edges(void); -#endif /* __TINC_EDGE_H__ */ +#endif diff --git a/src/ethernet.h b/src/ethernet.h index 8bf2b03..32f5553 100644 --- a/src/ethernet.h +++ b/src/ethernet.h @@ -1,3 +1,6 @@ +#ifndef TINC_ETHERNET_H +#define TINC_ETHERNET_H + /* ethernet.h -- missing Ethernet related definitions Copyright (C) 2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_ETHERNET_H__ -#define __TINC_ETHERNET_H__ - #ifndef ETH_ALEN #define ETH_ALEN 6 #endif @@ -50,7 +50,7 @@ struct ether_header { uint8_t ether_dhost[ETH_ALEN]; uint8_t ether_shost[ETH_ALEN]; uint16_t ether_type; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #endif #ifndef HAVE_STRUCT_ARPHDR @@ -58,17 +58,17 @@ struct arphdr { uint16_t ar_hrd; uint16_t ar_pro; uint8_t ar_hln; - uint8_t ar_pln; - uint16_t ar_op; -} __attribute__ ((__packed__)); + uint8_t ar_pln; + uint16_t ar_op; +} __attribute__((__packed__)); -#define ARPOP_REQUEST 1 -#define ARPOP_REPLY 2 -#define ARPOP_RREQUEST 3 -#define ARPOP_RREPLY 4 -#define ARPOP_InREQUEST 8 -#define ARPOP_InREPLY 9 -#define ARPOP_NAK 10 +#define ARPOP_REQUEST 1 +#define ARPOP_REPLY 2 +#define ARPOP_RREQUEST 3 +#define ARPOP_RREPLY 4 +#define ARPOP_InREQUEST 8 +#define ARPOP_InREPLY 9 +#define ARPOP_NAK 10 #endif #ifndef HAVE_STRUCT_ETHER_ARP @@ -78,7 +78,7 @@ struct ether_arp { uint8_t arp_spa[4]; uint8_t arp_tha[ETH_ALEN]; uint8_t arp_tpa[4]; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #define arp_hrd ea_hdr.ar_hrd #define arp_pro ea_hdr.ar_pro #define arp_hln ea_hdr.ar_hln @@ -86,4 +86,4 @@ struct ether_arp { #define arp_op ea_hdr.ar_op #endif -#endif /* __TINC_ETHERNET_H__ */ +#endif diff --git a/src/event.c b/src/event.c index 89ee022..85b18f7 100644 --- a/src/event.c +++ b/src/event.c @@ -31,11 +31,13 @@ extern time_t now; static int id; static int event_compare(const event_t *a, const event_t *b) { - if(a->time > b->time) + if(a->time > b->time) { return 1; + } - if(a->time < b->time) + if(a->time < b->time) { return -1; + } return a->id - b->id; } @@ -55,18 +57,21 @@ void expire_events(void) { /* * Make all events appear expired by substracting the difference between - * the expiration time of the last event and the current time. + * the expiration time of the last event and the current time. */ - if(!event_tree->tail) + if(!event_tree->tail) { return; + } event = event_tree->tail->data; - if(event->time <= now) + + if(event->time <= now) { return; + } diff = event->time - now; - + for(node = event_tree->head; node; node = node->next) { event = node->data; event->time -= diff; @@ -108,7 +113,9 @@ event_t *get_expired_event(void) { } event_t *peek_next_event(void) { - if (event_tree->head) + if(event_tree->head) { return event_tree->head->data; + } + return NULL; } diff --git a/src/event.h b/src/event.h index 38a4eb4..6d521bb 100644 --- a/src/event.h +++ b/src/event.h @@ -1,3 +1,6 @@ +#ifndef TINC_EVENT_H +#define TINC_EVENT_H + /* event.h -- header for event.c Copyright (C) 2002-2009 Guus Sliepen , @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_EVENT_H__ -#define __TINC_EVENT_H__ - #include "avl_tree.h" extern avl_tree_t *event_tree; @@ -37,11 +37,11 @@ typedef struct event { extern void init_events(void); extern void exit_events(void); extern void expire_events(void); -extern event_t *new_event(void) __attribute__ ((__malloc__)); -extern void free_event(event_t *); -extern void event_add(event_t *); -extern void event_del(event_t *); +extern event_t *new_event(void) __attribute__((__malloc__)); +extern void free_event(event_t *event); +extern void event_add(event_t *event); +extern void event_del(event_t *event); extern event_t *get_expired_event(void); extern event_t *peek_next_event(void); -#endif /* __TINC_EVENT_H__ */ +#endif diff --git a/src/fake-gai-errnos.h b/src/fake-gai-errnos.h deleted file mode 100644 index 4ffabb6..0000000 --- a/src/fake-gai-errnos.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * fake library for ssh - * - * This file is included in getaddrinfo.c and getnameinfo.c. - * See getaddrinfo.c and getnameinfo.c. - */ - -/* for old netdb.h */ -#ifndef EAI_NODATA -#define EAI_NODATA 1 -#endif - -#ifndef EAI_MEMORY -#define EAI_MEMORY 2 -#endif - -#ifndef EAI_FAMILY -#define EAI_FAMILY 3 -#endif diff --git a/src/fake-getaddrinfo.c b/src/fake-getaddrinfo.c index 10672b7..231bd5c 100644 --- a/src/fake-getaddrinfo.c +++ b/src/fake-getaddrinfo.c @@ -17,24 +17,25 @@ #include "xalloc.h" #if !HAVE_DECL_GAI_STRERROR -char *gai_strerror(int ecode) -{ - switch (ecode) { - case EAI_NODATA: - return "No address associated with hostname"; - case EAI_MEMORY: - return "Memory allocation failure"; - case EAI_FAMILY: - return "Address family not supported"; - default: - return "Unknown error"; +char *gai_strerror(int ecode) { + switch(ecode) { + case EAI_NODATA: + return "No address associated with hostname"; + + case EAI_MEMORY: + return "Memory allocation failure"; + + case EAI_FAMILY: + return "Address family not supported"; + + default: + return "Unknown error"; } -} +} #endif /* !HAVE_GAI_STRERROR */ #if !HAVE_DECL_FREEADDRINFO -void freeaddrinfo(struct addrinfo *ai) -{ +void freeaddrinfo(struct addrinfo *ai) { struct addrinfo *next; while(ai) { @@ -46,56 +47,58 @@ void freeaddrinfo(struct addrinfo *ai) #endif /* !HAVE_FREEADDRINFO */ #if !HAVE_DECL_GETADDRINFO -static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr) -{ +static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr) { struct addrinfo *ai; ai = xmalloc_and_zero(sizeof(struct addrinfo) + sizeof(struct sockaddr_in)); - + ai->ai_addr = (struct sockaddr *)(ai + 1); ai->ai_addrlen = sizeof(struct sockaddr_in); ai->ai_addr->sa_family = ai->ai_family = AF_INET; ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port; ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr; - + return ai; } -int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) -{ +int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) { struct addrinfo *prev = NULL; struct hostent *hp; struct in_addr in = {0}; int i; uint16_t port = 0; - if(hints && hints->ai_family != AF_INET && hints->ai_family != AF_UNSPEC) + if(hints && hints->ai_family != AF_INET && hints->ai_family != AF_UNSPEC) { return EAI_FAMILY; + } - if (servname) + if(servname) { port = htons(atoi(servname)); + } - if (hints && hints->ai_flags & AI_PASSIVE) { + if(hints && hints->ai_flags & AI_PASSIVE) { *res = malloc_ai(port, htonl(0x00000000)); return 0; } - - if (!hostname) { + + if(!hostname) { *res = malloc_ai(port, htonl(0x7f000001)); return 0; } - + hp = gethostbyname(hostname); - if(!hp || !hp->h_addr_list || !hp->h_addr_list[0]) + if(!hp || !hp->h_addr_list || !hp->h_addr_list[0]) { return EAI_NODATA; + } - for (i = 0; hp->h_addr_list[i]; i++) { + for(i = 0; hp->h_addr_list[i]; i++) { *res = malloc_ai(port, ((struct in_addr *)hp->h_addr_list[i])->s_addr); - if(prev) + if(prev) { prev->ai_next = *res; + } prev = *res; } diff --git a/src/fake-getaddrinfo.h b/src/fake-getaddrinfo.h index 5af7491..f10cb83 100644 --- a/src/fake-getaddrinfo.h +++ b/src/fake-getaddrinfo.h @@ -1,7 +1,17 @@ -#ifndef _FAKE_GETADDRINFO_H -#define _FAKE_GETADDRINFO_H +#ifndef TINC_FAKE_GETADDRINFO_H +#define TINC_FAKE_GETADDRINFO_H -#include "fake-gai-errnos.h" +#ifndef EAI_NODATA +#define EAI_NODATA 1 +#endif + +#ifndef EAI_MEMORY +#define EAI_MEMORY 2 +#endif + +#ifndef EAI_FAMILY +#define EAI_FAMILY 3 +#endif #ifndef AI_PASSIVE # define AI_PASSIVE 1 @@ -20,19 +30,19 @@ #ifndef HAVE_STRUCT_ADDRINFO struct addrinfo { - int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ - int ai_family; /* PF_xxx */ - int ai_socktype; /* SOCK_xxx */ - int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ - size_t ai_addrlen; /* length of ai_addr */ - char *ai_canonname; /* canonical name for hostname */ - struct sockaddr *ai_addr; /* binary address */ - struct addrinfo *ai_next; /* next structure in linked list */ + int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ + int ai_family; /* PF_xxx */ + int ai_socktype; /* SOCK_xxx */ + int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ + size_t ai_addrlen; /* length of ai_addr */ + char *ai_canonname; /* canonical name for hostname */ + struct sockaddr *ai_addr; /* binary address */ + struct addrinfo *ai_next; /* next structure in linked list */ }; #endif /* !HAVE_STRUCT_ADDRINFO */ #if !HAVE_DECL_GETADDRINFO -int getaddrinfo(const char *hostname, const char *servname, +int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res); #endif /* !HAVE_GETADDRINFO */ @@ -44,4 +54,4 @@ char *gai_strerror(int ecode); void freeaddrinfo(struct addrinfo *ai); #endif /* !HAVE_FREEADDRINFO */ -#endif /* _FAKE_GETADDRINFO_H */ +#endif diff --git a/src/fake-getnameinfo.c b/src/fake-getnameinfo.c index 8047173..88b78a5 100644 --- a/src/fake-getnameinfo.c +++ b/src/fake-getnameinfo.c @@ -16,39 +16,48 @@ #if !HAVE_DECL_GETNAMEINFO -int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, size_t hostlen, char *serv, size_t servlen, int flags) -{ +int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, size_t hostlen, char *serv, size_t servlen, int flags) { struct sockaddr_in *sin = (struct sockaddr_in *)sa; struct hostent *hp; int len; - if(sa->sa_family != AF_INET) + if(sa->sa_family != AF_INET) { return EAI_FAMILY; + } if(serv && servlen) { len = snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); - if(len < 0 || len >= servlen) + + if(len < 0 || len >= servlen) { return EAI_MEMORY; + } } - if(!host || !hostlen) + if(!host || !hostlen) { return 0; + } if(flags & NI_NUMERICHOST) { len = snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); - if(len < 0 || len >= hostlen) + + if(len < 0 || len >= hostlen) { return EAI_MEMORY; + } + return 0; } hp = gethostbyaddr((char *)&sin->sin_addr, sizeof(struct in_addr), AF_INET); - - if(!hp || !hp->h_name || !hp->h_name[0]) + + if(!hp || !hp->h_name || !hp->h_name[0]) { return EAI_NODATA; - + } + len = snprintf(host, hostlen, "%s", hp->h_name); - if(len < 0 || len >= hostlen) + + if(len < 0 || len >= hostlen) { return EAI_MEMORY; + } return 0; } diff --git a/src/fake-getnameinfo.h b/src/fake-getnameinfo.h index 4389a8f..4f24ad1 100644 --- a/src/fake-getnameinfo.h +++ b/src/fake-getnameinfo.h @@ -1,8 +1,8 @@ -#ifndef _FAKE_GETNAMEINFO_H -#define _FAKE_GETNAMEINFO_H +#ifndef TINC_FAKE_GETNAMEINFO_H +#define TINC_FAKE_GETNAMEINFO_H #if !HAVE_DECL_GETNAMEINFO -int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, +int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, size_t hostlen, char *serv, size_t servlen, int flags); #endif /* !HAVE_GETNAMEINFO */ @@ -13,4 +13,4 @@ int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, # define NI_MAXHOST 1025 #endif /* !NI_MAXHOST */ -#endif /* _FAKE_GETNAMEINFO_H */ +#endif diff --git a/src/getopt.c b/src/getopt.c index d63887e..f84562c 100644 --- a/src/getopt.c +++ b/src/getopt.c @@ -4,7 +4,7 @@ before changing it! Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 - Free Software Foundation, Inc. + Free Software Foundation, Inc. NOTE: The canonical source of this file is maintained with the GNU C Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu. @@ -34,7 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #include "../config.h" #endif -#if !defined (__STDC__) || !__STDC__ +#if !defined (STDC) || !STDC /* This is a separate conditional since some stdc systems reject `defined (const)'. */ #ifndef const @@ -57,7 +57,7 @@ with this program; if not, write to the Free Software Foundation, Inc., it is simpler to just do this in the source for each such file. */ #define GETOPT_INTERFACE_VERSION 2 -#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 +#if !defined (_LIBC) && defined (GLIBC) && GLIBC >= 2 #include #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION #define ELIDE_CODE @@ -68,13 +68,13 @@ with this program; if not, write to the Free Software Foundation, Inc., /* This needs to come after some library #include - to get __GNU_LIBRARY__ defined. */ -#ifdef __GNU_LIBRARY__ + to get GNU_LIBRARY defined. */ +#ifdef GNU_LIBRARY /* Don't include stdlib.h for non-GNU C libraries because some of them contain conflicting prototypes for getopt. */ #include #include -#endif /* GNU C library. */ +#endif /* GNU C library. */ #ifdef VMS #include @@ -83,7 +83,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #endif #endif -#if defined (WIN32) && !defined (__CYGWIN32__) +#if defined (WIN32) && !defined (CYGWIN32) /* It's not Unix, really. See? Capital letters. */ #include #define getpid() GetCurrentProcessId() @@ -132,7 +132,7 @@ int optind = 1; causes problems with re-calling getopt as programs generally don't know that. */ -int __getopt_initialized = 0; +int getopt_initialized = 0; /* The next char to be scanned in the option-element in which the last option character we returned was found. @@ -183,55 +183,56 @@ int optopt = '?'; of the value of `ordering'. In the case of RETURN_IN_ORDER, only `--' can cause `getopt' to return -1 with `optind' != ARGC. */ -static enum -{ - REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER +static enum { + REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER } ordering; /* Value of POSIXLY_CORRECT environment variable. */ static char *posixly_correct; -#ifdef __GNU_LIBRARY__ +#ifdef GNU_LIBRARY /* We want to avoid inclusion of string.h with non-GNU libraries because there are many ways it can cause trouble. On some systems, it contains special magic macros that don't work in GCC. */ #include -#define my_index strchr +#define my_index strchr #else /* Avoid depending on library functions or files whose names are inconsistent. */ -char *getenv (); +char *getenv(); static char * -my_index (str, chr) - const char *str; - int chr; +my_index(str, chr) +const char *str; +int chr; { - while (*str) - { - if (*str == chr) - return (char *) str; - str++; - } - return 0; + while(*str) { + if(*str == chr) { + return (char *) str; + } + + str++; + } + + return 0; } /* If using GCC, we can safely declare strlen this way. If not using GCC, it is ok not to declare it. */ -#ifdef __GNUC__ +#ifdef GNUC /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. That was relevant to code that was here before. */ -#if !defined (__STDC__) || !__STDC__ +#if !defined (STDC) || !STDC /* gcc with -traditional declares the built-in strlen to return int, and has done so at least since version 2.4.5. -- rms. */ -extern int strlen (const char *); -#endif /* not __STDC__ */ -#endif /* __GNUC__ */ +extern int strlen(const char *); +#endif /* not STDC */ +#endif /* GNUC */ -#endif /* not __GNU_LIBRARY__ */ +#endif /* not GNU_LIBRARY */ /* Handle permutation of arguments. */ @@ -247,7 +248,7 @@ static int last_nonopt; indicating ARGV elements that should not be considered arguments. */ /* Defined in getopt_init.c */ -extern char *__getopt_nonoption_flags; +extern char *getopt_nonoption_flags; static int nonoption_flags_max_len; static int nonoption_flags_len; @@ -255,32 +256,31 @@ static int nonoption_flags_len; static int original_argc; static char *const *original_argv; -extern pid_t __libc_pid; +extern pid_t libc_pid; /* Make sure the environment variable bash 2.0 puts in the environment is valid for the getopt call we must make sure that the ARGV passed to getopt is that one passed to the process. */ static void -__attribute__ ((__unused__)) -store_args_and_env (int argc, char *const *argv) -{ - /* XXX This is no good solution. We should rather copy the args so - that we can compare them later. But we must not use malloc(3). */ - original_argc = argc; - original_argv = argv; +__attribute__((__unused__)) +store_args_and_env(int argc, char *const *argv) { + /* XXX This is no good solution. We should rather copy the args so + that we can compare them later. But we must not use malloc(3). */ + original_argc = argc; + original_argv = argv; } -text_set_element (__libc_subinit, store_args_and_env); +text_set_element(libc_subinit, store_args_and_env); # define SWAP_FLAGS(ch1, ch2) \ - if (nonoption_flags_len > 0) \ - { \ - char __tmp = __getopt_nonoption_flags[ch1]; \ - __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ - __getopt_nonoption_flags[ch2] = __tmp; \ - } -#else /* !_LIBC */ + if (nonoption_flags_len > 0) \ + { \ + char tmp = getopt_nonoption_flags[ch1]; \ + getopt_nonoption_flags[ch1] = getopt_nonoption_flags[ch2]; \ + getopt_nonoption_flags[ch2] = tmp; \ + } +#else /* !_LIBC */ # define SWAP_FLAGS(ch1, ch2) -#endif /* _LIBC */ +#endif /* _LIBC */ /* Exchange two adjacent subsequences of ARGV. One subsequence is elements [first_nonopt,last_nonopt) @@ -291,162 +291,159 @@ text_set_element (__libc_subinit, store_args_and_env); `first_nonopt' and `last_nonopt' are relocated so that they describe the new indices of the non-options in ARGV after they are moved. */ -#if defined (__STDC__) && __STDC__ -static void exchange (char **); +#if defined (STDC) && STDC +static void exchange(char **); #endif static void -exchange (argv) - char **argv; +exchange(argv) +char **argv; { - int bottom = first_nonopt; - int middle = last_nonopt; - int top = optind; - char *tem; + int bottom = first_nonopt; + int middle = last_nonopt; + int top = optind; + char *tem; - /* Exchange the shorter segment with the far end of the longer segment. - That puts the shorter segment into the right place. - It leaves the longer segment in the right place overall, - but it consists of two parts that need to be swapped next. */ + /* Exchange the shorter segment with the far end of the longer segment. + That puts the shorter segment into the right place. + It leaves the longer segment in the right place overall, + but it consists of two parts that need to be swapped next. */ #ifdef _LIBC - /* First make sure the handling of the `__getopt_nonoption_flags' - string can work normally. Our top argument must be in the range - of the string. */ - if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) - { - /* We must extend the array. The user plays games with us and - presents new arguments. */ - char *new_str = malloc (top + 1); - if (new_str == NULL) - nonoption_flags_len = nonoption_flags_max_len = 0; - else - { - memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len); - memset (&new_str[nonoption_flags_max_len], '\0', - top + 1 - nonoption_flags_max_len); - nonoption_flags_max_len = top + 1; - __getopt_nonoption_flags = new_str; + + /* First make sure the handling of the `getopt_nonoption_flags' + string can work normally. Our top argument must be in the range + of the string. */ + if(nonoption_flags_len > 0 && top >= nonoption_flags_max_len) { + /* We must extend the array. The user plays games with us and + presents new arguments. */ + char *new_str = malloc(top + 1); + + if(new_str == NULL) { + nonoption_flags_len = nonoption_flags_max_len = 0; + } else { + memcpy(new_str, getopt_nonoption_flags, nonoption_flags_max_len); + memset(&new_str[nonoption_flags_max_len], '\0', + top + 1 - nonoption_flags_max_len); + nonoption_flags_max_len = top + 1; + getopt_nonoption_flags = new_str; + } } - } + #endif - while (top > middle && middle > bottom) - { - if (top - middle > middle - bottom) - { - /* Bottom segment is the short one. */ - int len = middle - bottom; - register int i; + while(top > middle && middle > bottom) { + if(top - middle > middle - bottom) { + /* Bottom segment is the short one. */ + int len = middle - bottom; + register int i; - /* Swap it with the top part of the top segment. */ - for (i = 0; i < len; i++) - { - tem = argv[bottom + i]; - argv[bottom + i] = argv[top - (middle - bottom) + i]; - argv[top - (middle - bottom) + i] = tem; - SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); - } - /* Exclude the moved bottom segment from further swapping. */ - top -= len; + /* Swap it with the top part of the top segment. */ + for(i = 0; i < len; i++) { + tem = argv[bottom + i]; + argv[bottom + i] = argv[top - (middle - bottom) + i]; + argv[top - (middle - bottom) + i] = tem; + SWAP_FLAGS(bottom + i, top - (middle - bottom) + i); + } + + /* Exclude the moved bottom segment from further swapping. */ + top -= len; + } else { + /* Top segment is the short one. */ + int len = top - middle; + register int i; + + /* Swap it with the bottom part of the bottom segment. */ + for(i = 0; i < len; i++) { + tem = argv[bottom + i]; + argv[bottom + i] = argv[middle + i]; + argv[middle + i] = tem; + SWAP_FLAGS(bottom + i, middle + i); + } + + /* Exclude the moved top segment from further swapping. */ + bottom += len; + } } - else - { - /* Top segment is the short one. */ - int len = top - middle; - register int i; - /* Swap it with the bottom part of the bottom segment. */ - for (i = 0; i < len; i++) - { - tem = argv[bottom + i]; - argv[bottom + i] = argv[middle + i]; - argv[middle + i] = tem; - SWAP_FLAGS (bottom + i, middle + i); - } - /* Exclude the moved top segment from further swapping. */ - bottom += len; - } - } + /* Update records for the slots the non-options now occupy. */ - /* Update records for the slots the non-options now occupy. */ - - first_nonopt += (optind - last_nonopt); - last_nonopt = optind; + first_nonopt += (optind - last_nonopt); + last_nonopt = optind; } /* Initialize the internal data when the first call is made. */ -#if defined (__STDC__) && __STDC__ -static const char *_getopt_initialize (int, char *const *, const char *); +#if defined (STDC) && STDC +static const char *_getopt_initialize(int, char *const *, const char *); #endif static const char * -_getopt_initialize (argc, argv, optstring) - int argc; - char *const *argv; - const char *optstring; +_getopt_initialize(argc, argv, optstring) +int argc; +char *const *argv; +const char *optstring; { - /* Start processing options with ARGV-element 1 (since ARGV-element 0 - is the program name); the sequence of previously skipped - non-option ARGV-elements is empty. */ + /* Start processing options with ARGV-element 1 (since ARGV-element 0 + is the program name); the sequence of previously skipped + non-option ARGV-elements is empty. */ - first_nonopt = last_nonopt = optind; + first_nonopt = last_nonopt = optind; - nextchar = NULL; + nextchar = NULL; - posixly_correct = getenv ("POSIXLY_CORRECT"); + posixly_correct = getenv("POSIXLY_CORRECT"); - /* Determine how to handle the ordering of options and nonoptions. */ + /* Determine how to handle the ordering of options and nonoptions. */ - if (optstring[0] == '-') - { - ordering = RETURN_IN_ORDER; - ++optstring; - } - else if (optstring[0] == '+') - { - ordering = REQUIRE_ORDER; - ++optstring; - } - else if (posixly_correct != NULL) - ordering = REQUIRE_ORDER; - else - ordering = PERMUTE; + if(optstring[0] == '-') { + ordering = RETURN_IN_ORDER; + ++optstring; + } else if(optstring[0] == '+') { + ordering = REQUIRE_ORDER; + ++optstring; + } else if(posixly_correct != NULL) { + ordering = REQUIRE_ORDER; + } else { + ordering = PERMUTE; + } #ifdef _LIBC - if (posixly_correct == NULL - && argc == original_argc && argv == original_argv) - { - if (nonoption_flags_max_len == 0) - { - if (__getopt_nonoption_flags == NULL - || __getopt_nonoption_flags[0] == '\0') - nonoption_flags_max_len = -1; - else - { - const char *orig_str = __getopt_nonoption_flags; - int len = nonoption_flags_max_len = strlen (orig_str); - if (nonoption_flags_max_len < argc) - nonoption_flags_max_len = argc; - __getopt_nonoption_flags = - (char *) malloc (nonoption_flags_max_len); - if (__getopt_nonoption_flags == NULL) - nonoption_flags_max_len = -1; - else - { - memcpy (__getopt_nonoption_flags, orig_str, len); - memset (&__getopt_nonoption_flags[len], '\0', - nonoption_flags_max_len - len); + + if(posixly_correct == NULL + && argc == original_argc && argv == original_argv) { + if(nonoption_flags_max_len == 0) { + if(getopt_nonoption_flags == NULL + || getopt_nonoption_flags[0] == '\0') { + nonoption_flags_max_len = -1; + } else { + const char *orig_str = getopt_nonoption_flags; + int len = nonoption_flags_max_len = strlen(orig_str); + + if(nonoption_flags_max_len < argc) { + nonoption_flags_max_len = argc; + } + + getopt_nonoption_flags = + (char *) malloc(nonoption_flags_max_len); + + if(getopt_nonoption_flags == NULL) { + nonoption_flags_max_len = -1; + } else { + memcpy(getopt_nonoption_flags, orig_str, len); + memset(&getopt_nonoption_flags[len], '\0', + nonoption_flags_max_len - len); + } + } } - } + + nonoption_flags_len = nonoption_flags_max_len; + } else { + nonoption_flags_len = 0; } - nonoption_flags_len = nonoption_flags_max_len; - } - else - nonoption_flags_len = 0; + #endif - return optstring; + return optstring; } /* Scan elements of ARGV (whose length is ARGC) for option characters @@ -506,474 +503,476 @@ _getopt_initialize (argc, argv, optstring) long-named options. */ int -_getopt_internal (argc, argv, optstring, longopts, longind, long_only) - int argc; - char *const *argv; - const char *optstring; - const struct option *longopts; - int *longind; - int long_only; +_getopt_internal(argc, argv, optstring, longopts, longind, long_only) +int argc; +char *const *argv; +const char *optstring; +const struct option *longopts; +int *longind; +int long_only; { - optarg = NULL; + optarg = NULL; - if (optind == 0 || !__getopt_initialized) - { - if (optind == 0) - optind = 1; /* Don't scan ARGV[0], the program name. */ - optstring = _getopt_initialize (argc, argv, optstring); - __getopt_initialized = 1; - } + if(optind == 0 || !getopt_initialized) { + if(optind == 0) { + optind = 1; /* Don't scan ARGV[0], the program name. */ + } - /* Test whether ARGV[optind] points to a non-option argument. - Either it does not have option syntax, or there is an environment flag - from the shell indicating it is not an option. The later information - is only used when the used in the GNU libc. */ + optstring = _getopt_initialize(argc, argv, optstring); + getopt_initialized = 1; + } + + /* Test whether ARGV[optind] points to a non-option argument. + Either it does not have option syntax, or there is an environment flag + from the shell indicating it is not an option. The later information + is only used when the used in the GNU libc. */ #ifdef _LIBC -#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ - || (optind < nonoption_flags_len \ - && __getopt_nonoption_flags[optind] == '1')) +#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ + || (optind < nonoption_flags_len \ + && getopt_nonoption_flags[optind] == '1')) #else #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') #endif - if (nextchar == NULL || *nextchar == '\0') - { - /* Advance to the next ARGV-element. */ + if(nextchar == NULL || *nextchar == '\0') { + /* Advance to the next ARGV-element. */ - /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been - moved back by the user (who may also have changed the arguments). */ - if (last_nonopt > optind) - last_nonopt = optind; - if (first_nonopt > optind) - first_nonopt = optind; - - if (ordering == PERMUTE) - { - /* If we have just processed some options following some non-options, - exchange them so that the options come first. */ - - if (first_nonopt != last_nonopt && last_nonopt != optind) - exchange ((char **) argv); - else if (last_nonopt != optind) - first_nonopt = optind; - - /* Skip any additional non-options - and extend the range of non-options previously skipped. */ - - while (optind < argc && NONOPTION_P) - optind++; - last_nonopt = optind; - } - - /* The special ARGV-element `--' means premature end of options. - Skip it like a null option, - then exchange with previous non-options as if it were an option, - then skip everything else like a non-option. */ - - if (optind != argc && !strcmp (argv[optind], "--")) - { - optind++; - - if (first_nonopt != last_nonopt && last_nonopt != optind) - exchange ((char **) argv); - else if (first_nonopt == last_nonopt) - first_nonopt = optind; - last_nonopt = argc; - - optind = argc; - } - - /* If we have done all the ARGV-elements, stop the scan - and back over any non-options that we skipped and permuted. */ - - if (optind == argc) - { - /* Set the next-arg-index to point at the non-options - that we previously skipped, so the caller will digest them. */ - if (first_nonopt != last_nonopt) - optind = first_nonopt; - return -1; - } - - /* If we have come to a non-option and did not permute it, - either stop the scan or describe it to the caller and pass it by. */ - - if (NONOPTION_P) - { - if (ordering == REQUIRE_ORDER) - return -1; - optarg = argv[optind++]; - return 1; - } - - /* We have found another option-ARGV-element. - Skip the initial punctuation. */ - - nextchar = (argv[optind] + 1 - + (longopts != NULL && argv[optind][1] == '-')); - } - - /* Decode the current option-ARGV-element. */ - - /* Check whether the ARGV-element is a long option. - - If long_only and the ARGV-element has the form "-f", where f is - a valid short option, don't consider it an abbreviated form of - a long option that starts with f. Otherwise there would be no - way to give the -f short option. - - On the other hand, if there's a long option "fubar" and - the ARGV-element is "-fu", do consider that an abbreviation of - the long option, just like "--fu", and not "-f" with arg "u". - - This distinction seems to be the most useful approach. */ - - if (longopts != NULL - && (argv[optind][1] == '-' - || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) - { - char *nameend; - const struct option *p; - const struct option *pfound = NULL; - int exact = 0; - int ambig = 0; - int indfound = -1; - int option_index; - - for (nameend = nextchar; *nameend && *nameend != '='; nameend++) - /* Do nothing. */ ; - - /* Test all long options for either exact match - or abbreviated matches. */ - for (p = longopts, option_index = 0; p->name; p++, option_index++) - if (!strncmp (p->name, nextchar, nameend - nextchar)) - { - if ((unsigned int) (nameend - nextchar) - == (unsigned int) strlen (p->name)) - { - /* Exact match found. */ - pfound = p; - indfound = option_index; - exact = 1; - break; - } - else if (pfound == NULL) - { - /* First nonexact match found. */ - pfound = p; - indfound = option_index; - } - else - /* Second or later nonexact match found. */ - ambig = 1; - } - - if (ambig && !exact) - { - if (opterr) - fprintf (stderr, "%s: option `%s' is ambiguous\n", - argv[0], argv[optind]); - nextchar += strlen (nextchar); - optind++; - optopt = 0; - return '?'; - } - - if (pfound != NULL) - { - option_index = indfound; - optind++; - if (*nameend) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg) - optarg = nameend + 1; - else - { - if (opterr) - { - if (argv[optind - 1][1] == '-') - /* --option */ - fprintf (stderr, - "%s: option `--%s' doesn't allow an argument\n", - argv[0], pfound->name); - else - /* +option or -option */ - fprintf (stderr, - "%s: option `%c%s' doesn't allow an argument\n", - argv[0], argv[optind - 1][0], pfound->name); - } - - nextchar += strlen (nextchar); - - optopt = pfound->val; - return '?'; + /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been + moved back by the user (who may also have changed the arguments). */ + if(last_nonopt > optind) { + last_nonopt = optind; } - } - else if (pfound->has_arg == 1) - { - if (optind < argc) - optarg = argv[optind++]; - else - { - if (opterr) - fprintf (stderr, - "%s: option `%s' requires an argument\n", - argv[0], argv[optind - 1]); - nextchar += strlen (nextchar); - optopt = pfound->val; - return optstring[0] == ':' ? ':' : '?'; + + if(first_nonopt > optind) { + first_nonopt = optind; } - } - nextchar += strlen (nextchar); - if (longind != NULL) - *longind = option_index; - if (pfound->flag) - { - *(pfound->flag) = pfound->val; - return 0; - } - return pfound->val; + + if(ordering == PERMUTE) { + /* If we have just processed some options following some non-options, + exchange them so that the options come first. */ + + if(first_nonopt != last_nonopt && last_nonopt != optind) { + exchange((char **) argv); + } else if(last_nonopt != optind) { + first_nonopt = optind; + } + + /* Skip any additional non-options + and extend the range of non-options previously skipped. */ + + while(optind < argc && NONOPTION_P) { + optind++; + } + + last_nonopt = optind; + } + + /* The special ARGV-element `--' means premature end of options. + Skip it like a null option, + then exchange with previous non-options as if it were an option, + then skip everything else like a non-option. */ + + if(optind != argc && !strcmp(argv[optind], "--")) { + optind++; + + if(first_nonopt != last_nonopt && last_nonopt != optind) { + exchange((char **) argv); + } else if(first_nonopt == last_nonopt) { + first_nonopt = optind; + } + + last_nonopt = argc; + + optind = argc; + } + + /* If we have done all the ARGV-elements, stop the scan + and back over any non-options that we skipped and permuted. */ + + if(optind == argc) { + /* Set the next-arg-index to point at the non-options + that we previously skipped, so the caller will digest them. */ + if(first_nonopt != last_nonopt) { + optind = first_nonopt; + } + + return -1; + } + + /* If we have come to a non-option and did not permute it, + either stop the scan or describe it to the caller and pass it by. */ + + if(NONOPTION_P) { + if(ordering == REQUIRE_ORDER) { + return -1; + } + + optarg = argv[optind++]; + return 1; + } + + /* We have found another option-ARGV-element. + Skip the initial punctuation. */ + + nextchar = (argv[optind] + 1 + + (longopts != NULL && argv[optind][1] == '-')); } - /* Can't find it as a long option. If this is not getopt_long_only, - or the option starts with '--' or is not a valid short - option, then it's an error. - Otherwise interpret it as a short option. */ - if (!long_only || argv[optind][1] == '-' - || my_index (optstring, *nextchar) == NULL) + /* Decode the current option-ARGV-element. */ + + /* Check whether the ARGV-element is a long option. + + If long_only and the ARGV-element has the form "-f", where f is + a valid short option, don't consider it an abbreviated form of + a long option that starts with f. Otherwise there would be no + way to give the -f short option. + + On the other hand, if there's a long option "fubar" and + the ARGV-element is "-fu", do consider that an abbreviation of + the long option, just like "--fu", and not "-f" with arg "u". + + This distinction seems to be the most useful approach. */ + + if(longopts != NULL + && (argv[optind][1] == '-' + || (long_only && (argv[optind][2] || !my_index(optstring, argv[optind][1]))))) { + char *nameend; + const struct option *p; + const struct option *pfound = NULL; + int exact = 0; + int ambig = 0; + int indfound = -1; + int option_index; + + for(nameend = nextchar; *nameend && *nameend != '='; nameend++) + /* Do nothing. */ ; + + /* Test all long options for either exact match + or abbreviated matches. */ + for(p = longopts, option_index = 0; p->name; p++, option_index++) + if(!strncmp(p->name, nextchar, nameend - nextchar)) { + if((unsigned int)(nameend - nextchar) + == (unsigned int) strlen(p->name)) { + /* Exact match found. */ + pfound = p; + indfound = option_index; + exact = 1; + break; + } else if(pfound == NULL) { + /* First nonexact match found. */ + pfound = p; + indfound = option_index; + } else + /* Second or later nonexact match found. */ + { + ambig = 1; + } + } + + if(ambig && !exact) { + if(opterr) + fprintf(stderr, "%s: option `%s' is ambiguous\n", + argv[0], argv[optind]); + + nextchar += strlen(nextchar); + optind++; + optopt = 0; + return '?'; + } + + if(pfound != NULL) { + option_index = indfound; + optind++; + + if(*nameend) { + /* Don't test has_arg with >, because some C compilers don't + allow it to be used on enums. */ + if(pfound->has_arg) { + optarg = nameend + 1; + } else { + if(opterr) { + if(argv[optind - 1][1] == '-') + /* --option */ + fprintf(stderr, + "%s: option `--%s' doesn't allow an argument\n", + argv[0], pfound->name); + else + /* +option or -option */ + fprintf(stderr, + "%s: option `%c%s' doesn't allow an argument\n", + argv[0], argv[optind - 1][0], pfound->name); + } + + nextchar += strlen(nextchar); + + optopt = pfound->val; + return '?'; + } + } else if(pfound->has_arg == 1) { + if(optind < argc) { + optarg = argv[optind++]; + } else { + if(opterr) + fprintf(stderr, + "%s: option `%s' requires an argument\n", + argv[0], argv[optind - 1]); + + nextchar += strlen(nextchar); + optopt = pfound->val; + return optstring[0] == ':' ? ':' : '?'; + } + } + + nextchar += strlen(nextchar); + + if(longind != NULL) { + *longind = option_index; + } + + if(pfound->flag) { + *(pfound->flag) = pfound->val; + return 0; + } + + return pfound->val; + } + + /* Can't find it as a long option. If this is not getopt_long_only, + or the option starts with '--' or is not a valid short + option, then it's an error. + Otherwise interpret it as a short option. */ + if(!long_only || argv[optind][1] == '-' + || my_index(optstring, *nextchar) == NULL) { + if(opterr) { + if(argv[optind][1] == '-') + /* --option */ + fprintf(stderr, "%s: unrecognized option `--%s'\n", + argv[0], nextchar); + else + /* +option or -option */ + fprintf(stderr, "%s: unrecognized option `%c%s'\n", + argv[0], argv[optind][0], nextchar); + } + + nextchar = (char *) ""; + optind++; + optopt = 0; + return '?'; + } + } + + /* Look at and handle the next short option-character. */ + { - if (opterr) - { - if (argv[optind][1] == '-') - /* --option */ - fprintf (stderr, "%s: unrecognized option `--%s'\n", - argv[0], nextchar); - else - /* +option or -option */ - fprintf (stderr, "%s: unrecognized option `%c%s'\n", - argv[0], argv[optind][0], nextchar); - } - nextchar = (char *) ""; - optind++; - optopt = 0; - return '?'; + char c = *nextchar++; + char *temp = my_index(optstring, c); + + /* Increment `optind' when we start to process its last character. */ + if(*nextchar == '\0') { + ++optind; + } + + if(temp == NULL || c == ':') { + if(opterr) { + if(posixly_correct) + /* 1003.2 specifies the format of this message. */ + fprintf(stderr, "%s: illegal option -- %c\n", + argv[0], c); + else + fprintf(stderr, "%s: invalid option -- %c\n", + argv[0], c); + } + + optopt = c; + return '?'; + } + + /* Convenience. Treat POSIX -W foo same as long option --foo */ + if(temp[0] == 'W' && temp[1] == ';') { + char *nameend; + const struct option *p; + const struct option *pfound = NULL; + int exact = 0; + int ambig = 0; + int indfound = 0; + int option_index; + + /* This is an option that requires an argument. */ + if(*nextchar != '\0') { + optarg = nextchar; + /* If we end this ARGV-element by taking the rest as an arg, + we must advance to the next element now. */ + optind++; + } else if(optind == argc) { + if(opterr) { + /* 1003.2 specifies the format of this message. */ + fprintf(stderr, "%s: option requires an argument -- %c\n", + argv[0], c); + } + + optopt = c; + + if(optstring[0] == ':') { + c = ':'; + } else { + c = '?'; + } + + return c; + } else + /* We already incremented `optind' once; + increment it again when taking next ARGV-elt as argument. */ + { + optarg = argv[optind++]; + } + + /* optarg is now the argument, see if it's in the + table of longopts. */ + + for(nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) + /* Do nothing. */ ; + + /* Test all long options for either exact match + or abbreviated matches. */ + for(p = longopts, option_index = 0; p->name; p++, option_index++) + if(!strncmp(p->name, nextchar, nameend - nextchar)) { + if((unsigned int)(nameend - nextchar) == strlen(p->name)) { + /* Exact match found. */ + pfound = p; + indfound = option_index; + exact = 1; + break; + } else if(pfound == NULL) { + /* First nonexact match found. */ + pfound = p; + indfound = option_index; + } else + /* Second or later nonexact match found. */ + { + ambig = 1; + } + } + + if(ambig && !exact) { + if(opterr) + fprintf(stderr, "%s: option `-W %s' is ambiguous\n", + argv[0], argv[optind]); + + nextchar += strlen(nextchar); + optind++; + return '?'; + } + + if(pfound != NULL) { + option_index = indfound; + + if(*nameend) { + /* Don't test has_arg with >, because some C compilers don't + allow it to be used on enums. */ + if(pfound->has_arg) { + optarg = nameend + 1; + } else { + if(opterr) + fprintf(stderr, + "%s: option `-W %s' doesn't allow an argument\n", + argv[0], pfound->name); + + nextchar += strlen(nextchar); + return '?'; + } + } else if(pfound->has_arg == 1) { + if(optind < argc) { + optarg = argv[optind++]; + } else { + if(opterr) + fprintf(stderr, + "%s: option `%s' requires an argument\n", + argv[0], argv[optind - 1]); + + nextchar += strlen(nextchar); + return optstring[0] == ':' ? ':' : '?'; + } + } + + nextchar += strlen(nextchar); + + if(longind != NULL) { + *longind = option_index; + } + + if(pfound->flag) { + *(pfound->flag) = pfound->val; + return 0; + } + + return pfound->val; + } + + nextchar = NULL; + return 'W'; /* Let the application handle it. */ + } + + if(temp[1] == ':') { + if(temp[2] == ':') { + /* This is an option that accepts an argument optionally. */ + if(*nextchar != '\0') { + optarg = nextchar; + optind++; + } else { + optarg = NULL; + } + + nextchar = NULL; + } else { + /* This is an option that requires an argument. */ + if(*nextchar != '\0') { + optarg = nextchar; + /* If we end this ARGV-element by taking the rest as an arg, + we must advance to the next element now. */ + optind++; + } else if(optind == argc) { + if(opterr) { + /* 1003.2 specifies the format of this message. */ + fprintf(stderr, + "%s: option requires an argument -- %c\n", + argv[0], c); + } + + optopt = c; + + if(optstring[0] == ':') { + c = ':'; + } else { + c = '?'; + } + } else + /* We already incremented `optind' once; + increment it again when taking next ARGV-elt as argument. */ + { + optarg = argv[optind++]; + } + + nextchar = NULL; + } + } + + return c; } - } - - /* Look at and handle the next short option-character. */ - - { - char c = *nextchar++; - char *temp = my_index (optstring, c); - - /* Increment `optind' when we start to process its last character. */ - if (*nextchar == '\0') - ++optind; - - if (temp == NULL || c == ':') - { - if (opterr) - { - if (posixly_correct) - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, "%s: illegal option -- %c\n", - argv[0], c); - else - fprintf (stderr, "%s: invalid option -- %c\n", - argv[0], c); - } - optopt = c; - return '?'; - } - /* Convenience. Treat POSIX -W foo same as long option --foo */ - if (temp[0] == 'W' && temp[1] == ';') - { - char *nameend; - const struct option *p; - const struct option *pfound = NULL; - int exact = 0; - int ambig = 0; - int indfound = 0; - int option_index; - - /* This is an option that requires an argument. */ - if (*nextchar != '\0') - { - optarg = nextchar; - /* If we end this ARGV-element by taking the rest as an arg, - we must advance to the next element now. */ - optind++; - } - else if (optind == argc) - { - if (opterr) - { - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, "%s: option requires an argument -- %c\n", - argv[0], c); - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = '?'; - return c; - } - else - /* We already incremented `optind' once; - increment it again when taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - - /* optarg is now the argument, see if it's in the - table of longopts. */ - - for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) - /* Do nothing. */ ; - - /* Test all long options for either exact match - or abbreviated matches. */ - for (p = longopts, option_index = 0; p->name; p++, option_index++) - if (!strncmp (p->name, nextchar, nameend - nextchar)) - { - if ((unsigned int) (nameend - nextchar) == strlen (p->name)) - { - /* Exact match found. */ - pfound = p; - indfound = option_index; - exact = 1; - break; - } - else if (pfound == NULL) - { - /* First nonexact match found. */ - pfound = p; - indfound = option_index; - } - else - /* Second or later nonexact match found. */ - ambig = 1; - } - if (ambig && !exact) - { - if (opterr) - fprintf (stderr, "%s: option `-W %s' is ambiguous\n", - argv[0], argv[optind]); - nextchar += strlen (nextchar); - optind++; - return '?'; - } - if (pfound != NULL) - { - option_index = indfound; - if (*nameend) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg) - optarg = nameend + 1; - else - { - if (opterr) - fprintf (stderr, - "%s: option `-W %s' doesn't allow an argument\n", - argv[0], pfound->name); - - nextchar += strlen (nextchar); - return '?'; - } - } - else if (pfound->has_arg == 1) - { - if (optind < argc) - optarg = argv[optind++]; - else - { - if (opterr) - fprintf (stderr, - "%s: option `%s' requires an argument\n", - argv[0], argv[optind - 1]); - nextchar += strlen (nextchar); - return optstring[0] == ':' ? ':' : '?'; - } - } - nextchar += strlen (nextchar); - if (longind != NULL) - *longind = option_index; - if (pfound->flag) - { - *(pfound->flag) = pfound->val; - return 0; - } - return pfound->val; - } - nextchar = NULL; - return 'W'; /* Let the application handle it. */ - } - if (temp[1] == ':') - { - if (temp[2] == ':') - { - /* This is an option that accepts an argument optionally. */ - if (*nextchar != '\0') - { - optarg = nextchar; - optind++; - } - else - optarg = NULL; - nextchar = NULL; - } - else - { - /* This is an option that requires an argument. */ - if (*nextchar != '\0') - { - optarg = nextchar; - /* If we end this ARGV-element by taking the rest as an arg, - we must advance to the next element now. */ - optind++; - } - else if (optind == argc) - { - if (opterr) - { - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, - "%s: option requires an argument -- %c\n", - argv[0], c); - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = '?'; - } - else - /* We already incremented `optind' once; - increment it again when taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - nextchar = NULL; - } - } - return c; - } } int -getopt (argc, argv, optstring) - int argc; - char *const *argv; - const char *optstring; +getopt(argc, argv, optstring) +int argc; +char *const *argv; +const char *optstring; { - return _getopt_internal (argc, argv, optstring, - (const struct option *) 0, - (int *) 0, - 0); + return _getopt_internal(argc, argv, optstring, + (const struct option *) 0, + (int *) 0, + 0); } -#endif /* Not ELIDE_CODE. */ +#endif /* Not ELIDE_CODE. */ #ifdef TEST @@ -981,68 +980,72 @@ getopt (argc, argv, optstring) the above definition of `getopt'. */ int -main (argc, argv) - int argc; - char **argv; +main(argc, argv) +int argc; +char **argv; { - int c; - int digit_optind = 0; + int c; + int digit_optind = 0; - while (1) - { - int this_option_optind = optind ? optind : 1; + while(1) { + int this_option_optind = optind ? optind : 1; - c = getopt (argc, argv, "abc:d:0123456789"); - if (c == -1) - break; + c = getopt(argc, argv, "abc:d:0123456789"); - switch (c) - { - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - if (digit_optind != 0 && digit_optind != this_option_optind) - printf ("digits occur in two different argv-elements.\n"); - digit_optind = this_option_optind; - printf ("option %c\n", c); - break; + if(c == -1) { + break; + } - case 'a': - printf ("option a\n"); - break; + switch(c) { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + if(digit_optind != 0 && digit_optind != this_option_optind) { + printf("digits occur in two different argv-elements.\n"); + } - case 'b': - printf ("option b\n"); - break; + digit_optind = this_option_optind; + printf("option %c\n", c); + break; - case 'c': - printf ("option c with value `%s'\n", optarg); - break; + case 'a': + printf("option a\n"); + break; - case '?': - break; + case 'b': + printf("option b\n"); + break; - default: - printf ("?? getopt returned character code 0%o ??\n", c); + case 'c': + printf("option c with value `%s'\n", optarg); + break; + + case '?': + break; + + default: + printf("?? getopt returned character code 0%o ??\n", c); + } } - } - if (optind < argc) - { - printf ("non-option ARGV-elements: "); - while (optind < argc) - printf ("%s ", argv[optind++]); - printf ("\n"); - } + if(optind < argc) { + printf("non-option ARGV-elements: "); - exit (0); + while(optind < argc) { + printf("%s ", argv[optind++]); + } + + printf("\n"); + } + + exit(0); } #endif /* TEST */ diff --git a/src/getopt.h b/src/getopt.h index ddf6fdd..cd77d67 100644 --- a/src/getopt.h +++ b/src/getopt.h @@ -1,3 +1,6 @@ +#ifndef TINC_GETOPT_H +#define TINC_GETOPT_H + /* Declarations for getopt. Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc. @@ -19,115 +22,111 @@ with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef _GETOPT_H -#define _GETOPT_H 1 - -#ifdef __cplusplus +#ifdef cplusplus extern "C" { #endif -/* For communication from `getopt' to the caller. - When `getopt' finds an option that takes an argument, - the argument value is returned here. - Also, when `ordering' is RETURN_IN_ORDER, - each non-option ARGV-element is returned here. */ + /* For communication from `getopt' to the caller. + When `getopt' finds an option that takes an argument, + the argument value is returned here. + Also, when `ordering' is RETURN_IN_ORDER, + each non-option ARGV-element is returned here. */ -extern char *optarg; + extern char *optarg; -/* Index in ARGV of the next element to be scanned. - This is used for communication to and from the caller - and for communication between successive calls to `getopt'. + /* Index in ARGV of the next element to be scanned. + This is used for communication to and from the caller + and for communication between successive calls to `getopt'. - On entry to `getopt', zero means this is the first call; initialize. + On entry to `getopt', zero means this is the first call; initialize. - When `getopt' returns -1, this is the index of the first of the - non-option elements that the caller should itself scan. + When `getopt' returns -1, this is the index of the first of the + non-option elements that the caller should itself scan. - Otherwise, `optind' communicates from one call to the next - how much of ARGV has been scanned so far. */ + Otherwise, `optind' communicates from one call to the next + how much of ARGV has been scanned so far. */ -extern int optind; + extern int optind; -/* Callers store zero here to inhibit the error message `getopt' prints - for unrecognized options. */ + /* Callers store zero here to inhibit the error message `getopt' prints + for unrecognized options. */ -extern int opterr; + extern int opterr; -/* Set to an option character which was unrecognized. */ + /* Set to an option character which was unrecognized. */ -extern int optopt; + extern int optopt; -/* Describe the long-named options requested by the application. - The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector - of `struct option' terminated by an element containing a name which is - zero. + /* Describe the long-named options requested by the application. + The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector + of `struct option' terminated by an element containing a name which is + zero. - The field `has_arg' is: - no_argument (or 0) if the option does not take an argument, - required_argument (or 1) if the option requires an argument, - optional_argument (or 2) if the option takes an optional argument. + The field `has_arg' is: + no_argument (or 0) if the option does not take an argument, + required_argument (or 1) if the option requires an argument, + optional_argument (or 2) if the option takes an optional argument. - If the field `flag' is not NULL, it points to a variable that is set - to the value given in the field `val' when the option is found, but - left unchanged if the option is not found. + If the field `flag' is not NULL, it points to a variable that is set + to the value given in the field `val' when the option is found, but + left unchanged if the option is not found. - To have a long-named option do something other than set an `int' to - a compiled-in constant, such as set a value from `optarg', set the - option's `flag' field to zero and its `val' field to a nonzero - value (the equivalent single-letter option character, if there is - one). For long options that have a zero `flag' field, `getopt' - returns the contents of the `val' field. */ + To have a long-named option do something other than set an `int' to + a compiled-in constant, such as set a value from `optarg', set the + option's `flag' field to zero and its `val' field to a nonzero + value (the equivalent single-letter option character, if there is + one). For long options that have a zero `flag' field, `getopt' + returns the contents of the `val' field. */ -struct option -{ -#if defined (__STDC__) && __STDC__ - const char *name; + struct option { +#if defined (STDC) && STDC + const char *name; #else - char *name; + char *name; #endif - /* has_arg can't be an enum because some compilers complain about - type mismatches in all the code that assumes it is an int. */ - int has_arg; - int *flag; - int val; -}; + /* has_arg can't be an enum because some compilers complain about + type mismatches in all the code that assumes it is an int. */ + int has_arg; + int *flag; + int val; + }; -/* Names for the values of the `has_arg' field of `struct option'. */ + /* Names for the values of the `has_arg' field of `struct option'. */ -#define no_argument 0 -#define required_argument 1 -#define optional_argument 2 +#define no_argument 0 +#define required_argument 1 +#define optional_argument 2 -#if defined (__STDC__) && __STDC__ -#ifdef __GNU_LIBRARY__ -/* Many other libraries have conflicting prototypes for getopt, with - differences in the consts, in stdlib.h. To avoid compilation - errors, only prototype getopt for the GNU C library. */ -extern int getopt (int argc, char *const *argv, const char *shortopts); -#else /* not __GNU_LIBRARY__ */ -extern int getopt (); -#endif /* __GNU_LIBRARY__ */ -extern int getopt_long (int argc, char *const *argv, const char *shortopts, - const struct option *longopts, int *longind); -extern int getopt_long_only (int argc, char *const *argv, - const char *shortopts, - const struct option *longopts, int *longind); +#if defined (STDC) && STDC +#ifdef GNU_LIBRARY + /* Many other libraries have conflicting prototypes for getopt, with + differences in the consts, in stdlib.h. To avoid compilation + errors, only prototype getopt for the GNU C library. */ + extern int getopt(int argc, char *const *argv, const char *shortopts); +#else /* not GNU_LIBRARY */ + extern int getopt(); +#endif /* GNU_LIBRARY */ + extern int getopt_long(int argc, char *const *argv, const char *shortopts, + const struct option *longopts, int *longind); + extern int getopt_long_only(int argc, char *const *argv, + const char *shortopts, + const struct option *longopts, int *longind); -/* Internal only. Users should not call this directly. */ -extern int _getopt_internal (int argc, char *const *argv, - const char *shortopts, - const struct option *longopts, int *longind, - int long_only); -#else /* not __STDC__ */ -extern int getopt (); -extern int getopt_long (); -extern int getopt_long_only (); + /* Internal only. Users should not call this directly. */ + extern int _getopt_internal(int argc, char *const *argv, + const char *shortopts, + const struct option *longopts, int *longind, + int long_only); +#else /* not STDC */ + extern int getopt(); + extern int getopt_long(); + extern int getopt_long_only(); -extern int _getopt_internal (); -#endif /* __STDC__ */ + extern int _getopt_internal(); +#endif /* STDC */ -#ifdef __cplusplus +#ifdef cplusplus } #endif -#endif /* _GETOPT_H */ +#endif diff --git a/src/getopt1.c b/src/getopt1.c index 19605a5..87ee95e 100644 --- a/src/getopt1.c +++ b/src/getopt1.c @@ -25,7 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #include "getopt.h" -#if !defined (__STDC__) || !__STDC__ +#if !defined (STDC) || !STDC /* This is a separate conditional since some stdc systems reject `defined (const)'. */ #ifndef const @@ -44,7 +44,7 @@ with this program; if not, write to the Free Software Foundation, Inc., it is simpler to just do this in the source for each such file. */ #define GETOPT_INTERFACE_VERSION 2 -#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 +#if !defined (_LIBC) && defined (GLIBC) && GLIBC >= 2 #include #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION #define ELIDE_CODE @@ -55,24 +55,24 @@ with this program; if not, write to the Free Software Foundation, Inc., /* This needs to come after some library #include - to get __GNU_LIBRARY__ defined. */ -#ifdef __GNU_LIBRARY__ + to get GNU_LIBRARY defined. */ +#ifdef GNU_LIBRARY #include #endif -#ifndef NULL +#ifndef NULL #define NULL 0 #endif int -getopt_long (argc, argv, options, long_options, opt_index) - int argc; - char *const *argv; - const char *options; - const struct option *long_options; - int *opt_index; +getopt_long(argc, argv, options, long_options, opt_index) +int argc; +char *const *argv; +const char *options; +const struct option *long_options; +int *opt_index; { - return _getopt_internal (argc, argv, options, long_options, opt_index, 0); + return _getopt_internal(argc, argv, options, long_options, opt_index, 0); } /* Like getopt_long, but '-' as well as '--' can indicate a long option. @@ -81,109 +81,115 @@ getopt_long (argc, argv, options, long_options, opt_index) instead. */ int -getopt_long_only (argc, argv, options, long_options, opt_index) - int argc; - char *const *argv; - const char *options; - const struct option *long_options; - int *opt_index; +getopt_long_only(argc, argv, options, long_options, opt_index) +int argc; +char *const *argv; +const char *options; +const struct option *long_options; +int *opt_index; { - return _getopt_internal (argc, argv, options, long_options, opt_index, 1); + return _getopt_internal(argc, argv, options, long_options, opt_index, 1); } -#endif /* Not ELIDE_CODE. */ +#endif /* Not ELIDE_CODE. */ #ifdef TEST #include int -main (argc, argv) - int argc; - char **argv; +main(argc, argv) +int argc; +char **argv; { - int c; - int digit_optind = 0; + int c; + int digit_optind = 0; - while (1) - { - int this_option_optind = optind ? optind : 1; - int option_index = 0; - static struct option long_options[] = - { - {"add", 1, 0, 0}, - {"append", 0, 0, 0}, - {"delete", 1, 0, 0}, - {"verbose", 0, 0, 0}, - {"create", 0, 0, 0}, - {"file", 1, 0, 0}, - {0, 0, 0, 0} - }; + while(1) { + int this_option_optind = optind ? optind : 1; + int option_index = 0; + static struct option long_options[] = { + {"add", 1, 0, 0}, + {"append", 0, 0, 0}, + {"delete", 1, 0, 0}, + {"verbose", 0, 0, 0}, + {"create", 0, 0, 0}, + {"file", 1, 0, 0}, + {0, 0, 0, 0} + }; - c = getopt_long (argc, argv, "abc:d:0123456789", - long_options, &option_index); - if (c == -1) - break; + c = getopt_long(argc, argv, "abc:d:0123456789", + long_options, &option_index); - switch (c) - { - case 0: - printf ("option %s", long_options[option_index].name); - if (optarg) - printf (" with arg %s", optarg); - printf ("\n"); - break; + if(c == -1) { + break; + } - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - if (digit_optind != 0 && digit_optind != this_option_optind) - printf ("digits occur in two different argv-elements.\n"); - digit_optind = this_option_optind; - printf ("option %c\n", c); - break; + switch(c) { + case 0: + printf("option %s", long_options[option_index].name); - case 'a': - printf ("option a\n"); - break; + if(optarg) { + printf(" with arg %s", optarg); + } - case 'b': - printf ("option b\n"); - break; + printf("\n"); + break; - case 'c': - printf ("option c with value `%s'\n", optarg); - break; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + if(digit_optind != 0 && digit_optind != this_option_optind) { + printf("digits occur in two different argv-elements.\n"); + } - case 'd': - printf ("option d with value `%s'\n", optarg); - break; + digit_optind = this_option_optind; + printf("option %c\n", c); + break; - case '?': - break; + case 'a': + printf("option a\n"); + break; - default: - printf ("?? getopt returned character code 0%o ??\n", c); + case 'b': + printf("option b\n"); + break; + + case 'c': + printf("option c with value `%s'\n", optarg); + break; + + case 'd': + printf("option d with value `%s'\n", optarg); + break; + + case '?': + break; + + default: + printf("?? getopt returned character code 0%o ??\n", c); + } } - } - if (optind < argc) - { - printf ("non-option ARGV-elements: "); - while (optind < argc) - printf ("%s ", argv[optind++]); - printf ("\n"); - } + if(optind < argc) { + printf("non-option ARGV-elements: "); - exit (0); + while(optind < argc) { + printf("%s ", argv[optind++]); + } + + printf("\n"); + } + + exit(0); } #endif /* TEST */ diff --git a/src/graph.c b/src/graph.c index 8ffd70e..832e017 100644 --- a/src/graph.c +++ b/src/graph.c @@ -84,8 +84,9 @@ static void mst_kruskal(void) { /* Do we have something to do at all? */ - if(!edge_weight_tree->head) + if(!edge_weight_tree->head) { return; + } ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Running Kruskal's algorithm:"); @@ -101,6 +102,7 @@ static void mst_kruskal(void) { for(node = edge_weight_tree->head; node; node = node->next) { e = node->data; + if(e->from->status.reachable) { e->from->status.visited = true; break; @@ -121,16 +123,18 @@ static void mst_kruskal(void) { e->from->status.visited = true; e->to->status.visited = true; - if(e->connection) + if(e->connection) { e->connection->status.mst = true; + } - if(e->reverse->connection) + if(e->reverse->connection) { e->reverse->connection->status.mst = true; + } safe_edges++; ifdebug(SCARY_THINGS) logger(LOG_DEBUG, " Adding edge %s - %s weight %d", e->from->name, - e->to->name, e->weight); + e->to->name, e->weight); if(skipped) { skipped = false; @@ -140,7 +144,7 @@ static void mst_kruskal(void) { } ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Done, counted %d nodes and %d safe edges.", nodes, - safe_edges); + safe_edges); } /* Implementation of a simple breadth-first search algorithm. @@ -180,22 +184,23 @@ static void sssp_bfs(void) { /* Loop while todo_list is filled */ - for(from = todo_list->head; from; from = todonext) { /* "from" is the node from which we start */ + for(from = todo_list->head; from; from = todonext) { /* "from" is the node from which we start */ n = from->data; - for(to = n->edge_tree->head; to; to = to->next) { /* "to" is the edge connected to "from" */ + for(to = n->edge_tree->head; to; to = to->next) { /* "to" is the edge connected to "from" */ e = to->data; - if(!e->reverse) + if(!e->reverse) { continue; + } /* Situation: - / - / + / + / ----->(n)---e-->(e->to) - \ - \ + \ + \ Where e is an edge, (n) and (e->to) are nodes. n->address is set to the e->address of the edge left of n to n. @@ -209,13 +214,15 @@ static void sssp_bfs(void) { indirect = n->status.indirect || e->options & OPTION_INDIRECT; if(e->to->status.visited - && (!e->to->status.indirect || indirect)) + && (!e->to->status.indirect || indirect)) { continue; + } // Only update nexthop the first time we visit this node. - if(!e->to->status.visited) + if(!e->to->status.visited) { e->to->nexthop = (n->nexthop == myself) ? e->to : n->nexthop; + } e->to->status.visited = true; e->to->status.indirect = indirect; @@ -223,8 +230,9 @@ static void sssp_bfs(void) { e->to->via = indirect ? n->via : e->to; e->to->options = e->options; - if(e->to->address.sa.sa_family == AF_UNSPEC && e->address.sa.sa_family != AF_UNKNOWN) + if(e->to->address.sa.sa_family == AF_UNSPEC && e->address.sa.sa_family != AF_UNKNOWN) { update_node_udp(e->to, &e->address); + } list_insert_tail(todo_list, e->to); } @@ -246,10 +254,10 @@ static void sssp_bfs(void) { if(n->status.reachable) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Node %s (%s) became reachable", - n->name, n->hostname); + n->name, n->hostname); } else { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Node %s (%s) became unreachable", - n->name, n->hostname); + n->name, n->hostname); } /* TODO: only clear status.validkey if node is unreachable? */ @@ -278,22 +286,23 @@ static void sssp_bfs(void) { execute_script(n->status.reachable ? "host-up" : "host-down", envp); xasprintf(&name, - n->status.reachable ? "hosts/%s-up" : "hosts/%s-down", - n->name); + n->status.reachable ? "hosts/%s-up" : "hosts/%s-down", + n->name); execute_script(name, envp); free(name); free(address); free(port); - for(i = 0; i < 7; i++) + for(i = 0; i < 7; i++) { free(envp[i]); + } subnet_update(n, NULL, n->status.reachable); if(!n->status.reachable) { update_node_udp(n, NULL); - memset(&n->status, 0, sizeof n->status); + memset(&n->status, 0, sizeof(n->status)); n->options = 0; } else if(n->connection) { send_ans_key(n); @@ -312,7 +321,7 @@ void graph(void) { /* Dump nodes and edges to a graphviz file. - + The file can be converted to an image with dot -Tpng graph_filename -o image_filename.png -Gconcentrate=true */ @@ -323,14 +332,15 @@ void dump_graph(void) { edge_t *e; char *filename = NULL, *tmpname = NULL; FILE *file, *pipe = NULL; - - if(!graph_changed || !get_config_string(lookup_config(config_tree, "GraphDumpFile"), &filename)) + + if(!graph_changed || !get_config_string(lookup_config(config_tree, "GraphDumpFile"), &filename)) { return; + } graph_changed = false; ifdebug(PROTOCOL) logger(LOG_NOTICE, "Dumping graph"); - + if(filename[0] == '|') { file = pipe = popen(filename + 1, "w"); } else { @@ -346,7 +356,7 @@ void dump_graph(void) { } fprintf(file, "digraph {\n"); - + /* dump all nodes first */ for(node = node_tree->head; node; node = node->next) { n = node->data; @@ -359,8 +369,8 @@ void dump_graph(void) { fprintf(file, " %s -> %s;\n", e->from->name, e->to->name); } - fprintf(file, "}\n"); - + fprintf(file, "}\n"); + if(pipe) { pclose(pipe); } else { @@ -368,8 +378,11 @@ void dump_graph(void) { #ifdef HAVE_MINGW unlink(filename); #endif - if(rename(tmpname, filename)) + + if(rename(tmpname, filename)) { logger(LOG_ERR, "Could not rename %s to %s: %s\n", tmpname, filename, strerror(errno)); + } + free(tmpname); } diff --git a/src/graph.h b/src/graph.h index fa521f5..fafffcb 100644 --- a/src/graph.h +++ b/src/graph.h @@ -1,3 +1,6 @@ +#ifndef TINC_GRAPH_H +#define TINC_GRAPH_H + /* graph.h -- header for graph.c Copyright (C) 2001-2012 Guus Sliepen , @@ -18,10 +21,7 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_GRAPH_H__ -#define __TINC_GRAPH_H__ - extern void graph(void); extern void dump_graph(void); -#endif /* __TINC_GRAPH_H__ */ +#endif diff --git a/src/have.h b/src/have.h index 396143d..11fa56a 100644 --- a/src/have.h +++ b/src/have.h @@ -1,3 +1,6 @@ +#ifndef TINC_HAVE_H +#define TINC_HAVE_H + /* have.h -- include headers which are known to exist Copyright (C) 1998-2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_HAVE_H__ -#define __TINC_HAVE_H__ - #ifdef HAVE_MINGW #ifdef WITH_WINDOWS2000 #define WINVER Windows2000 @@ -30,15 +30,19 @@ #endif #include +#include +#include +#include #include #include #include #include -#include #include +#include + #include #include -#include +#include #ifdef HAVE_MINGW #include @@ -55,10 +59,6 @@ #include #endif -#ifdef HAVE_INTTYPES_H -#include -#endif - #ifdef HAVE_ALLOCA_H #include #endif @@ -211,4 +211,4 @@ #include #endif -#endif /* __TINC_SYSTEM_H__ */ +#endif diff --git a/src/ipv4.h b/src/ipv4.h index bd63ad0..7f45ad7 100644 --- a/src/ipv4.h +++ b/src/ipv4.h @@ -1,3 +1,6 @@ +#ifndef TINC_IPV4_H +#define TINC_IPV4_H + /* ipv4.h -- missing IPv4 related definitions Copyright (C) 2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_IPV4_H__ -#define __TINC_IPV4_H__ - #ifndef AF_INET #define AF_INET 2 #endif @@ -63,16 +63,16 @@ #ifndef HAVE_STRUCT_IP struct ip { -#if __BYTE_ORDER == __LITTLE_ENDIAN - unsigned int ip_hl:4; - unsigned int ip_v:4; +#if BYTE_ORDER == LITTLE_ENDIAN + unsigned int ip_hl: 4; + unsigned int ip_v: 4; #else - unsigned int ip_v:4; - unsigned int ip_hl:4; + unsigned int ip_v: 4; + unsigned int ip_hl: 4; #endif uint8_t ip_tos; uint16_t ip_len; - uint16_t ip_id; + uint16_t ip_id; uint16_t ip_off; #define IP_RF 0x8000 #define IP_DF 0x4000 @@ -81,7 +81,7 @@ struct ip { uint8_t ip_p; uint16_t ip_sum; struct in_addr ip_src, ip_dst; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #endif #ifndef IP_OFFMASK @@ -143,7 +143,7 @@ struct icmp { #define icmp_radv icmp_dun.id_radv #define icmp_mask icmp_dun.id_mask #define icmp_data icmp_dun.id_data -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #endif -#endif /* __TINC_IPV4_H__ */ +#endif diff --git a/src/ipv6.h b/src/ipv6.h index 6a4466f..1642278 100644 --- a/src/ipv6.h +++ b/src/ipv6.h @@ -1,3 +1,6 @@ +#ifndef TINC_IPV6_H +#define TINC_IPV6_H + /* ipv6.h -- missing IPv6 related definitions Copyright (C) 2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_IPV6_H__ -#define __TINC_IPV6_H__ - #ifndef AF_INET6 #define AF_INET6 10 #endif @@ -36,7 +36,7 @@ struct in6_addr { uint16_t u6_addr16[8]; uint32_t u6_addr32[4]; } in6_u; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #define s6_addr in6_u.u6_addr8 #define s6_addr16 in6_u.u6_addr16 #define s6_addr32 in6_u.u6_addr32 @@ -49,14 +49,14 @@ struct sockaddr_in6 { uint32_t sin6_flowinfo; struct in6_addr sin6_addr; uint32_t sin6_scope_id; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #endif #ifndef IN6_IS_ADDR_V4MAPPED #define IN6_IS_ADDR_V4MAPPED(a) \ - ((((__const uint32_t *) (a))[0] == 0) \ - && (((__const uint32_t *) (a))[1] == 0) \ - && (((__const uint32_t *) (a))[2] == htonl (0xffff))) + ((((const uint32_t *) (a))[0] == 0) \ + && (((const uint32_t *) (a))[1] == 0) \ + && (((const uint32_t *) (a))[2] == htonl (0xffff))) #endif #ifndef HAVE_STRUCT_IP6_HDR @@ -72,7 +72,7 @@ struct ip6_hdr { } ip6_ctlun; struct in6_addr ip6_src; struct in6_addr ip6_dst; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #define ip6_vfc ip6_ctlun.ip6_un2_vfc #define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow #define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen @@ -91,7 +91,7 @@ struct icmp6_hdr { uint16_t icmp6_un_data16[2]; uint8_t icmp6_un_data8[4]; } icmp6_dataun; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #define ICMP6_DST_UNREACH_NOROUTE 0 #define ICMP6_DST_UNREACH 1 #define ICMP6_PACKET_TOO_BIG 2 @@ -111,7 +111,7 @@ struct icmp6_hdr { struct nd_neighbor_solicit { struct icmp6_hdr nd_ns_hdr; struct in6_addr nd_ns_target; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #define ND_OPT_SOURCE_LINKADDR 1 #define ND_OPT_TARGET_LINKADDR 2 #define nd_ns_type nd_ns_hdr.icmp6_type @@ -124,7 +124,7 @@ struct nd_neighbor_solicit { struct nd_opt_hdr { uint8_t nd_opt_type; uint8_t nd_opt_len; -} __attribute__ ((__packed__)); +} __attribute__((__packed__)); #endif -#endif /* __TINC_IPV6_H__ */ +#endif diff --git a/src/linux/device.c b/src/linux/device.c index 8d042d2..38debe8 100644 --- a/src/linux/device.c +++ b/src/linux/device.c @@ -47,7 +47,7 @@ char *device = NULL; char *iface = NULL; static char *type = NULL; static char ifrname[IFNAMSIZ]; -static char *device_info; +static const char *device_info; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; @@ -56,13 +56,16 @@ static bool setup_device(void) { struct ifreq ifr; bool t1q = false; - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { device = xstrdup(DEFAULT_DEVICE); + } if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) #ifdef HAVE_LINUX_IF_TUN_H - if (netname != NULL) + if(netname != NULL) { iface = xstrdup(netname); + } + #else iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device); #endif @@ -94,17 +97,22 @@ static bool setup_device(void) { device_type = DEVICE_TYPE_TUN; device_info = "Linux tun/tap device (tun mode)"; } else { - if (routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { overwrite_mac = true; + } + ifr.ifr_flags = IFF_TAP | IFF_NO_PI; device_type = DEVICE_TYPE_TAP; device_info = "Linux tun/tap device (tap mode)"; } #ifdef IFF_ONE_QUEUE + /* Set IFF_ONE_QUEUE flag... */ - if(get_config_bool(lookup_config(config_tree, "IffOneQueue"), &t1q) && t1q) + if(get_config_bool(lookup_config(config_tree, "IffOneQueue"), &t1q) && t1q) { ifr.ifr_flags |= IFF_ONE_QUEUE; + } + #endif if(iface) { @@ -117,6 +125,9 @@ static bool setup_device(void) { ifrname[IFNAMSIZ - 1] = 0; free(iface); iface = xstrdup(ifrname); + } else if(errno == EPERM || errno == EBUSY) { + logger(LOG_ERR, "Error while trying to configure %s: %s", device, strerror(errno)); + return false; } else if(!ioctl(device_fd, (('T' << 8) | 202), &ifr)) { logger(LOG_WARNING, "Old ioctl() request was needed for %s", device); strncpy(ifrname, ifr.ifr_name, IFNAMSIZ); @@ -126,16 +137,19 @@ static bool setup_device(void) { } else #endif { - if(routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { overwrite_mac = true; + } + device_info = "Linux ethertap device"; device_type = DEVICE_TYPE_ETHERTAP; free(iface); iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device); } - if(overwrite_mac && !ioctl(device_fd, SIOCGIFHWADDR, &ifr)) + if(overwrite_mac && !ioctl(device_fd, SIOCGIFHWADDR, &ifr)) { memcpy(mymac.x, ifr.ifr_hwaddr.sa_data, ETH_ALEN); + } logger(LOG_INFO, "%s is a %s", device, device_info); @@ -152,81 +166,89 @@ static void close_device(void) { static bool read_packet(vpn_packet_t *packet) { int lenin; - + switch(device_type) { - case DEVICE_TYPE_TUN: - lenin = read(device_fd, packet->data + 10, MTU - 10); + case DEVICE_TYPE_TUN: + lenin = read(device_fd, packet->data + 10, MTU - 10); - if(lenin <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", - device_info, device, strerror(errno)); - return false; - } + if(lenin <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", + device_info, device, strerror(errno)); + return false; + } - memset(packet->data, 0, 12); - packet->len = lenin + 10; - break; - case DEVICE_TYPE_TAP: - lenin = read(device_fd, packet->data, MTU); + memset(packet->data, 0, 12); + packet->len = lenin + 10; + break; - if(lenin <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", - device_info, device, strerror(errno)); - return false; - } + case DEVICE_TYPE_TAP: + lenin = read(device_fd, packet->data, MTU); - packet->len = lenin; - break; - case DEVICE_TYPE_ETHERTAP: - lenin = read(device_fd, packet->data - 2, MTU + 2); + if(lenin <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", + device_info, device, strerror(errno)); + return false; + } - if(lenin <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", - device_info, device, strerror(errno)); - return false; - } + packet->len = lenin; + break; - packet->len = lenin - 2; - break; + case DEVICE_TYPE_ETHERTAP: + lenin = read(device_fd, packet->data - 2, MTU + 2); + + if(lenin <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", + device_info, device, strerror(errno)); + return false; + } + + packet->len = lenin - 2; + break; } device_total_in += packet->len; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, - device_info); + device_info); return true; } static bool write_packet(vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); switch(device_type) { - case DEVICE_TYPE_TUN: - packet->data[10] = packet->data[11] = 0; - if(write(device_fd, packet->data + 10, packet->len - 10) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, - strerror(errno)); - return false; - } - break; - case DEVICE_TYPE_TAP: - if(write(device_fd, packet->data, packet->len) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, - strerror(errno)); - return false; - } - break; - case DEVICE_TYPE_ETHERTAP: - memcpy(packet->data - 2, &packet->len, 2); + case DEVICE_TYPE_TUN: + packet->data[10] = packet->data[11] = 0; - if(write(device_fd, packet->data - 2, packet->len + 2) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, - strerror(errno)); - return false; - } - break; + if(write(device_fd, packet->data + 10, packet->len - 10) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, + strerror(errno)); + return false; + } + + break; + + case DEVICE_TYPE_TAP: + if(write(device_fd, packet->data, packet->len) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, + strerror(errno)); + return false; + } + + break; + + case DEVICE_TYPE_ETHERTAP: + memcpy(packet->data - 2, &packet->len, 2); + + if(write(device_fd, packet->data - 2, packet->len + 2) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, + strerror(errno)); + return false; + } + + break; } device_total_out += packet->len; diff --git a/src/list.c b/src/list.c index a26c58d..a807c6d 100644 --- a/src/list.c +++ b/src/list.c @@ -43,8 +43,9 @@ list_node_t *list_alloc_node(void) { } void list_free_node(list_t *list, list_node_t *node) { - if(node->data && list->delete) + if(node->data && list->delete) { list->delete(node->data); + } free(node); } @@ -61,10 +62,11 @@ list_node_t *list_insert_head(list_t *list, void *data) { node->next = list->head; list->head = node; - if(node->next) + if(node->next) { node->next->prev = node; - else + } else { list->tail = node; + } list->count++; @@ -81,10 +83,11 @@ list_node_t *list_insert_tail(list_t *list, void *data) { node->prev = list->tail; list->tail = node; - if(node->prev) + if(node->prev) { node->prev->next = node; - else + } else { list->head = node; + } list->count++; @@ -92,15 +95,17 @@ list_node_t *list_insert_tail(list_t *list, void *data) { } void list_unlink_node(list_t *list, list_node_t *node) { - if(node->prev) + if(node->prev) { node->prev->next = node->next; - else + } else { list->head = node->next; + } - if(node->next) + if(node->next) { node->next->prev = node->prev; - else + } else { list->tail = node->prev; + } list->count--; } @@ -121,17 +126,19 @@ void list_delete_tail(list_t *list) { /* Head/tail lookup */ void *list_get_head(list_t *list) { - if(list->head) + if(list->head) { return list->head->data; - else + } else { return NULL; + } } void *list_get_tail(list_t *list) { - if(list->tail) + if(list->tail) { return list->tail->data; - else + } else { return NULL; + } } /* Fast list deletion */ @@ -163,7 +170,9 @@ void list_foreach(list_t *list, list_action_t action) { for(node = list->head; node; node = next) { next = node->next; - if(node->data) + + if(node->data) { action(node->data); + } } } diff --git a/src/list.h b/src/list.h index 197fbb8..b2a9b3d 100644 --- a/src/list.h +++ b/src/list.h @@ -1,3 +1,6 @@ +#ifndef TINC_LIST_H +#define TINC_LIST_H + /* list.h -- header file for list.c Copyright (C) 2000-2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_LIST_H__ -#define __TINC_LIST_H__ - typedef struct list_node_t { struct list_node_t *prev; struct list_node_t *next; @@ -45,34 +45,34 @@ typedef struct list_t { /* (De)constructors */ -extern list_t *list_alloc(list_action_t) __attribute__ ((__malloc__)); -extern void list_free(list_t *); +extern list_t *list_alloc(list_action_t) __attribute__((__malloc__)); +extern void list_free(list_t *list); extern list_node_t *list_alloc_node(void); -extern void list_free_node(list_t *, list_node_t *); +extern void list_free_node(list_t *list, list_node_t *node); /* Insertion and deletion */ -extern list_node_t *list_insert_head(list_t *, void *); -extern list_node_t *list_insert_tail(list_t *, void *); +extern list_node_t *list_insert_head(list_t *list, void *data); +extern list_node_t *list_insert_tail(list_t *list, void *data); -extern void list_unlink_node(list_t *, list_node_t *); -extern void list_delete_node(list_t *, list_node_t *); +extern void list_unlink_node(list_t *list, list_node_t *node); +extern void list_delete_node(list_t *list, list_node_t *node); -extern void list_delete_head(list_t *); -extern void list_delete_tail(list_t *); +extern void list_delete_head(list_t *list); +extern void list_delete_tail(list_t *list); /* Head/tail lookup */ -extern void *list_get_head(list_t *); -extern void *list_get_tail(list_t *); +extern void *list_get_head(list_t *list); +extern void *list_get_tail(list_t *list); /* Fast list deletion */ -extern void list_delete_list(list_t *); +extern void list_delete_list(list_t *list); /* Traversing */ -extern void list_foreach(list_t *, list_action_t); -extern void list_foreach_node(list_t *, list_action_node_t); +extern void list_foreach(list_t *list, list_action_t action); +extern void list_foreach_node(list_t *list, list_action_node_t action); -#endif /* __TINC_LIST_H__ */ +#endif diff --git a/src/logger.c b/src/logger.c index 3f60edb..89dbe26 100644 --- a/src/logger.c +++ b/src/logger.c @@ -36,48 +36,58 @@ static const char *logident = NULL; void openlogger(const char *ident, logmode_t mode) { logident = ident; logmode = mode; - + switch(mode) { - case LOGMODE_STDERR: - logpid = getpid(); - break; - case LOGMODE_FILE: - logpid = getpid(); - logfile = fopen(logfilename, "a"); - if(!logfile) { - fprintf(stderr, "Could not open log file %s: %s\n", logfilename, strerror(errno)); - logmode = LOGMODE_NULL; - } - break; - case LOGMODE_SYSLOG: + case LOGMODE_STDERR: + logpid = getpid(); + break; + + case LOGMODE_FILE: + logpid = getpid(); + logfile = fopen(logfilename, "a"); + + if(!logfile) { + fprintf(stderr, "Could not open log file %s: %s\n", logfilename, strerror(errno)); + logmode = LOGMODE_NULL; + } + + break; + + case LOGMODE_SYSLOG: #ifdef HAVE_MINGW - loghandle = RegisterEventSource(NULL, logident); - if(!loghandle) { - fprintf(stderr, "Could not open log handle!"); - logmode = LOGMODE_NULL; - } - break; + loghandle = RegisterEventSource(NULL, logident); + + if(!loghandle) { + fprintf(stderr, "Could not open log handle!"); + logmode = LOGMODE_NULL; + } + + break; #else #ifdef HAVE_SYSLOG_H - openlog(logident, LOG_CONS | LOG_PID, LOG_DAEMON); - break; + openlog(logident, LOG_CONS | LOG_PID, LOG_DAEMON); + break; #endif #endif - case LOGMODE_NULL: - break; + + case LOGMODE_NULL: + break; } } void reopenlogger() { - if(logmode != LOGMODE_FILE) + if(logmode != LOGMODE_FILE) { return; + } fflush(logfile); FILE *newfile = fopen(logfilename, "a"); + if(!newfile) { logger(LOG_ERR, "Unable to reopen log file %s: %s", logfilename, strerror(errno)); return; } + fclose(logfile); logfile = newfile; } @@ -90,44 +100,48 @@ void logger(int priority, const char *format, ...) { va_start(ap, format); switch(logmode) { - case LOGMODE_STDERR: - vfprintf(stderr, format, ap); - fprintf(stderr, "\n"); - fflush(stderr); - break; - case LOGMODE_FILE: - now = time(NULL); - strftime(timestr, sizeof timestr, "%Y-%m-%d %H:%M:%S", localtime(&now)); - fprintf(logfile, "%s %s[%ld]: ", timestr, logident, (long)logpid); - vfprintf(logfile, format, ap); - fprintf(logfile, "\n"); - fflush(logfile); - break; - case LOGMODE_SYSLOG: + case LOGMODE_STDERR: + vfprintf(stderr, format, ap); + fprintf(stderr, "\n"); + fflush(stderr); + break; + + case LOGMODE_FILE: + now = time(NULL); + strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&now)); + fprintf(logfile, "%s %s[%ld]: ", timestr, logident, (long)logpid); + vfprintf(logfile, format, ap); + fprintf(logfile, "\n"); + fflush(logfile); + break; + + case LOGMODE_SYSLOG: #ifdef HAVE_MINGW - { - char message[4096]; - const char *messages[] = {message}; - vsnprintf(message, sizeof(message), format, ap); - message[sizeof message - 1] = 0; - ReportEvent(loghandle, priority, 0, 0, NULL, 1, 0, messages, NULL); - } + { + char message[4096]; + const char *messages[] = {message}; + vsnprintf(message, sizeof(message), format, ap); + message[sizeof(message) - 1] = 0; + ReportEvent(loghandle, priority, 0, 0, NULL, 1, 0, messages, NULL); + } + #else #ifdef HAVE_SYSLOG_H #ifdef HAVE_VSYSLOG - vsyslog(priority, format, ap); + vsyslog(priority, format, ap); #else - { - char message[4096]; - vsnprintf(message, sizeof(message), format, ap); - syslog(priority, "%s", message); - } + { + char message[4096]; + vsnprintf(message, sizeof(message), format, ap); + syslog(priority, "%s", message); + } #endif - break; + break; #endif #endif - case LOGMODE_NULL: - break; + + case LOGMODE_NULL: + break; } va_end(ap); @@ -135,22 +149,24 @@ void logger(int priority, const char *format, ...) { void closelogger(void) { switch(logmode) { - case LOGMODE_FILE: - fclose(logfile); - break; - case LOGMODE_SYSLOG: + case LOGMODE_FILE: + fclose(logfile); + break; + + case LOGMODE_SYSLOG: #ifdef HAVE_MINGW - DeregisterEventSource(loghandle); - break; + DeregisterEventSource(loghandle); + break; #else #ifdef HAVE_SYSLOG_H - closelog(); - break; + closelog(); + break; #endif #endif - case LOGMODE_NULL: - case LOGMODE_STDERR: - break; - break; + + case LOGMODE_NULL: + case LOGMODE_STDERR: + break; + break; } } diff --git a/src/logger.h b/src/logger.h index ff2cb34..5a17ffb 100644 --- a/src/logger.h +++ b/src/logger.h @@ -1,17 +1,36 @@ -#ifndef __TINC_LOGGER_H__ -#define __TINC_LOGGER_H__ +#ifndef TINC_LOGGER_H +#define TINC_LOGGER_H + +/* + logger.h -- header file for logger.c + Copyright (C) 2003-2016 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ typedef enum debug_t { - DEBUG_NOTHING = 0, /* Quiet mode, only show starting/stopping of the daemon */ + DEBUG_NOTHING = 0, /* Quiet mode, only show starting/stopping of the daemon */ DEBUG_ALWAYS = 0, - DEBUG_CONNECTIONS = 1, /* Show (dis)connects of other tinc daemons via TCP */ - DEBUG_ERROR = 2, /* Show error messages received from other hosts */ - DEBUG_STATUS = 2, /* Show status messages received from other hosts */ - DEBUG_PROTOCOL = 3, /* Show the requests that are sent/received */ - DEBUG_META = 4, /* Show contents of every request that is sent/received */ - DEBUG_TRAFFIC = 5, /* Show network traffic information */ - DEBUG_PACKET = 6, /* Show contents of each packet that is being sent/received */ - DEBUG_SCARY_THINGS = 10 /* You have been warned */ + DEBUG_CONNECTIONS = 1, /* Show (dis)connects of other tinc daemons via TCP */ + DEBUG_ERROR = 2, /* Show error messages received from other hosts */ + DEBUG_STATUS = 2, /* Show status messages received from other hosts */ + DEBUG_PROTOCOL = 3, /* Show the requests that are sent/received */ + DEBUG_META = 4, /* Show contents of every request that is sent/received */ + DEBUG_TRAFFIC = 5, /* Show network traffic information */ + DEBUG_PACKET = 6, /* Show contents of each packet that is being sent/received */ + DEBUG_SCARY_THINGS = 10, /* You have been warned */ } debug_t; typedef enum logmode_t { @@ -46,11 +65,11 @@ enum { #endif extern debug_t debug_level; -extern void openlogger(const char *, logmode_t); +extern void openlogger(const char *ident, logmode_t mode); extern void reopenlogger(void); -extern void logger(int, const char *, ...) __attribute__ ((__format__(printf, 2, 3))); +extern void logger(int priority, const char *format, ...) __attribute__((__format__(printf, 2, 3))); extern void closelogger(void); #define ifdebug(l) if(debug_level >= DEBUG_##l) -#endif /* __TINC_LOGGER_H__ */ +#endif diff --git a/src/meta.c b/src/meta.c index ccc3b2e..ee55ecd 100644 --- a/src/meta.c +++ b/src/meta.c @@ -38,16 +38,12 @@ bool send_meta(connection_t *c, const char *buffer, int length) { int outlen; int result; - if(!c) { - logger(LOG_ERR, "send_meta() called with NULL pointer!"); - abort(); - } - ifdebug(META) logger(LOG_DEBUG, "Sending %d bytes of metadata to %s (%s)", length, - c->name, c->hostname); + c->name, c->hostname); - if(!c->outbuflen) + if(!c->outbuflen) { c->last_flushed_time = now; + } /* Find room in connection's buffer */ if(length + c->outbuflen > c->outbufsize) { @@ -63,7 +59,7 @@ bool send_meta(connection_t *c, const char *buffer, int length) { /* Add our data to buffer */ if(c->status.encryptout) { /* Check encryption limits */ - if(length > c->outbudget) { + if((uint64_t)length > c->outbudget) { ifdebug(META) logger(LOG_ERR, "Byte limit exceeded for encryption to %s (%s)", c->name, c->hostname); return false; } else { @@ -71,15 +67,17 @@ bool send_meta(connection_t *c, const char *buffer, int length) { } result = EVP_EncryptUpdate(c->outctx, (unsigned char *)c->outbuf + c->outbufstart + c->outbuflen, - &outlen, (unsigned char *)buffer, length); + &outlen, (unsigned char *)buffer, length); + if(!result || outlen < length) { logger(LOG_ERR, "Error while encrypting metadata to %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } else if(outlen > length) { logger(LOG_EMERG, "Encrypted data too long! Heap corrupted!"); abort(); } + c->outbuflen += outlen; } else { memcpy(c->outbuf + c->outbufstart + c->outbuflen, buffer, length); @@ -91,25 +89,26 @@ bool send_meta(connection_t *c, const char *buffer, int length) { bool flush_meta(connection_t *c) { int result; - + ifdebug(META) logger(LOG_DEBUG, "Flushing %d bytes to %s (%s)", - c->outbuflen, c->name, c->hostname); + c->outbuflen, c->name, c->hostname); while(c->outbuflen) { result = send(c->socket, c->outbuf + c->outbufstart, c->outbuflen, 0); + if(result <= 0) { if(!errno || errno == EPIPE) { ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Connection closed by %s (%s)", - c->name, c->hostname); + c->name, c->hostname); } else if(errno == EINTR) { continue; } else if(sockwouldblock(sockerrno)) { ifdebug(META) logger(LOG_DEBUG, "Flushing %d bytes to %s (%s) would block", - c->outbuflen, c->name, c->hostname); + c->outbuflen, c->name, c->hostname); return true; } else { logger(LOG_ERR, "Flushing meta data to %s (%s) failed: %s", c->name, - c->hostname, sockstrerror(sockerrno)); + c->hostname, sockstrerror(sockerrno)); } return false; @@ -130,8 +129,9 @@ void broadcast_meta(connection_t *from, const char *buffer, int length) { for(node = connection_tree->head; node; node = node->next) { c = node->data; - if(c != from && c->status.active) + if(c != from && c->status.active) { send_meta(c, buffer, length); + } } } @@ -155,12 +155,12 @@ bool receive_meta(connection_t *c) { if(lenin <= 0) { if(!lenin || !errno) { ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Connection closed by %s (%s)", - c->name, c->hostname); - } else if(sockwouldblock(sockerrno)) + c->name, c->hostname); + } else if(sockwouldblock(sockerrno)) { return true; - else + } else logger(LOG_ERR, "Metadata socket read error for %s (%s): %s", - c->name, c->hostname, sockstrerror(sockerrno)); + c->name, c->hostname, sockstrerror(sockerrno)); return false; } @@ -174,9 +174,12 @@ bool receive_meta(connection_t *c) { /* Is it proxy metadata? */ if(c->allow_request == PROXY) { - reqlen = receive_proxy_meta(c, oldlen, lenin); - if(reqlen < 0) + reqlen = receive_proxy_meta(c); + + if(reqlen < 0) { return false; + } + goto consume; } @@ -184,7 +187,7 @@ bool receive_meta(connection_t *c) { if(c->status.decryptin && !decrypted) { /* Check decryption limits */ - if(lenin > c->inbudget) { + if((uint64_t)lenin > c->inbudget) { ifdebug(META) logger(LOG_ERR, "Byte limit exceeded for decryption from %s (%s)", c->name, c->hostname); return false; } else { @@ -192,11 +195,13 @@ bool receive_meta(connection_t *c) { } result = EVP_DecryptUpdate(c->inctx, (unsigned char *)inbuf, &lenout, (unsigned char *)c->buffer + oldlen, lenin); + if(!result || lenout != lenin) { logger(LOG_ERR, "Error while decrypting metadata from %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } + memcpy(c->buffer + oldlen, inbuf, lenin); decrypted = true; } @@ -219,17 +224,19 @@ bool receive_meta(connection_t *c) { for(i = oldlen; i < c->buflen; i++) { if(c->buffer[i] == '\n') { - c->buffer[i] = '\0'; /* replace end-of-line by end-of-string so we can use sscanf */ + c->buffer[i] = '\0'; /* replace end-of-line by end-of-string so we can use sscanf */ c->reqlen = reqlen = i + 1; break; } } - if(reqlen && !receive_request(c)) + if(reqlen && !receive_request(c)) { return false; + } } consume: + if(reqlen) { c->buflen -= reqlen; lenin -= reqlen - oldlen; @@ -243,7 +250,7 @@ consume: if(c->buflen >= MAXBUFSIZE) { logger(LOG_ERR, "Metadata read buffer overflow for %s (%s)", - c->name, c->hostname); + c->name, c->hostname); return false; } diff --git a/src/meta.h b/src/meta.h index fcb09fc..36914f1 100644 --- a/src/meta.h +++ b/src/meta.h @@ -1,3 +1,6 @@ +#ifndef TINC_META_H +#define TINC_META_H + /* meta.h -- header for meta.c Copyright (C) 2000-2006 Guus Sliepen , @@ -18,14 +21,11 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_META_H__ -#define __TINC_META_H__ - #include "connection.h" -extern bool send_meta(struct connection_t *, const char *, int); -extern void broadcast_meta(struct connection_t *, const char *, int); -extern bool flush_meta(struct connection_t *); -extern bool receive_meta(struct connection_t *); +extern bool send_meta(struct connection_t *c, const char *buffer, int length); +extern void broadcast_meta(struct connection_t *c, const char *buffer, int length); +extern bool flush_meta(struct connection_t *c); +extern bool receive_meta(struct connection_t *c); -#endif /* __TINC_META_H__ */ +#endif diff --git a/src/mingw/common.h b/src/mingw/common.h index 6e5e75c..41b9dc5 100644 --- a/src/mingw/common.h +++ b/src/mingw/common.h @@ -37,7 +37,7 @@ //============= #define TAP_CONTROL_CODE(request,method) \ - CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS) + CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS) #define TAP_IOCTL_GET_MAC TAP_CONTROL_CODE (1, METHOD_BUFFERED) #define TAP_IOCTL_GET_VERSION TAP_CONTROL_CODE (2, METHOD_BUFFERED) diff --git a/src/mingw/device.c b/src/mingw/device.c index 3ff6759..321c515 100644 --- a/src/mingw/device.c +++ b/src/mingw/device.c @@ -37,7 +37,7 @@ int device_fd = -1; static HANDLE device_handle = INVALID_HANDLE_VALUE; char *device = NULL; char *iface = NULL; -static char *device_info = NULL; +static const char *device_info = "Windows tap device"; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; @@ -66,17 +66,21 @@ static DWORD WINAPI tapreader(void *bla) { if(!status) { if(GetLastError() == ERROR_IO_PENDING) { WaitForSingleObject(r_overlapped.hEvent, INFINITE); - if(!GetOverlappedResult(device_handle, &r_overlapped, &len, FALSE)) + + if(!GetOverlappedResult(device_handle, &r_overlapped, &len, FALSE)) { continue; + } } else { logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); + device, strerror(errno)); errors++; + if(errors >= 10) { EnterCriticalSection(&mutex); running = false; LeaveCriticalSection(&mutex); } + usleep(1000000); continue; } @@ -113,8 +117,9 @@ static bool setup_device(void) { get_config_string(lookup_config(config_tree, "Device"), &device); get_config_string(lookup_config(config_tree, "Interface"), &iface); - if(device && iface) + if(device && iface) { logger(LOG_WARNING, "Warning: both Device and Interface specified, results may not be as expected"); + } /* Open registry and look for network adapters */ @@ -123,44 +128,51 @@ static bool setup_device(void) { return false; } - for (i = 0; ; i++) { + for(i = 0; ; i++) { len = sizeof(adapterid); - if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL)) + + if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL)) { break; + } /* Find out more about this adapter */ snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", NETWORK_CONNECTIONS_KEY, adapterid); - if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, regpath, 0, KEY_READ, &key2)) + if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, regpath, 0, KEY_READ, &key2)) { continue; + } len = sizeof(adaptername); err = RegQueryValueEx(key2, "Name", 0, 0, (LPBYTE)adaptername, &len); RegCloseKey(key2); - if(err) + if(err) { continue; + } if(device) { if(!strcmp(device, adapterid)) { found = true; break; - } else + } else { continue; + } } if(iface) { if(!strcmp(iface, adaptername)) { found = true; break; - } else + } else { continue; + } } snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adapterid); device_handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0); + if(device_handle != INVALID_HANDLE_VALUE) { found = true; break; @@ -174,11 +186,13 @@ static bool setup_device(void) { return false; } - if(!device) + if(!device) { device = xstrdup(adapterid); + } - if(!iface) + if(!iface) { iface = xstrdup(adaptername); + } /* Try to open the corresponding tap device */ @@ -186,7 +200,7 @@ static bool setup_device(void) { snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, device); device_handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0); } - + if(device_handle == INVALID_HANDLE_VALUE) { logger(LOG_ERR, "%s (%s) is not a usable Windows tap device: %s", device, iface, winerror(GetLastError())); return false; @@ -222,8 +236,6 @@ static bool setup_device(void) { status = true; DeviceIoControl(device_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status, sizeof(status), &status, sizeof(status), &len, NULL); - device_info = "Windows tap device"; - logger(LOG_INFO, "%s (%s) is a %s", device, iface, device_info); return true; @@ -245,18 +257,20 @@ static bool write_packet(vpn_packet_t *packet) { static vpn_packet_t queue; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); /* Check if there is something in progress */ if(queue.len) { DWORD size; BOOL success = GetOverlappedResult(device_handle, &w_overlapped, &size, FALSE); + if(success) { ResetEvent(&w_overlapped); queue.len = 0; } else { int err = GetLastError(); + if(err != ERROR_IO_INCOMPLETE) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Error completing previously queued write: %s", winerror(err)); ResetEvent(&w_overlapped); @@ -275,10 +289,12 @@ static bool write_packet(vpn_packet_t *packet) { if(!WriteFile(device_handle, queue.data, packet->len, &lenout, &w_overlapped)) { int err = GetLastError(); + if(err != ERROR_IO_PENDING) { logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, device, winerror(err)); return false; } + // Write is being done asynchronously. queue.len = packet->len; } else { diff --git a/src/multicast_device.c b/src/multicast_device.c index ea43e2c..93a40c4 100644 --- a/src/multicast_device.c +++ b/src/multicast_device.c @@ -29,7 +29,7 @@ #include "route.h" #include "xalloc.h" -static char *device_info; +static const char *device_info = "multicast socket"; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; @@ -43,8 +43,6 @@ static bool setup_device(void) { char *space; int ttl = 1; - device_info = "multicast socket"; - get_config_string(lookup_config(config_tree, "Interface"), &iface); if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { @@ -54,6 +52,7 @@ static bool setup_device(void) { host = xstrdup(device); space = strchr(host, ' '); + if(!space) { logger(LOG_ERR, "Port number required for %s", device_info); free(host); @@ -70,10 +69,14 @@ static bool setup_device(void) { } ai = str2addrinfo(host, port, SOCK_DGRAM); - if(!ai) + + if(!ai) { + free(host); return false; + } device_fd = socket(ai->ai_family, SOCK_DGRAM, IPPROTO_UDP); + if(device_fd < 0) { logger(LOG_ERR, "Creating socket failed: %s", sockstrerror(sockerrno)); free(host); @@ -85,7 +88,7 @@ static bool setup_device(void) { #endif static const int one = 1; - setsockopt(device_fd, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof one); + setsockopt(device_fd, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(one)); if(bind(device_fd, ai->ai_addr, ai->ai_addrlen)) { closesocket(device_fd); @@ -96,54 +99,62 @@ static bool setup_device(void) { switch(ai->ai_family) { #ifdef IP_ADD_MEMBERSHIP - case AF_INET: { - struct ip_mreq mreq; - struct sockaddr_in in; - memcpy(&in, ai->ai_addr, sizeof in); - mreq.imr_multiaddr.s_addr = in.sin_addr.s_addr; - mreq.imr_interface.s_addr = htonl(INADDR_ANY); - if(setsockopt(device_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (void *)&mreq, sizeof mreq)) { - logger(LOG_ERR, "Cannot join multicast group %s %s: %s", host, port, sockstrerror(sockerrno)); - closesocket(device_fd); - free(host); - return false; - } -#ifdef IP_MULTICAST_LOOP - setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_LOOP, (const void *)&one, sizeof one); -#endif -#ifdef IP_MULTICAST_TTL - setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_TTL, (void *)&ttl, sizeof ttl); -#endif - } break; -#endif -#ifdef IPV6_JOIN_GROUP - case AF_INET6: { - struct ipv6_mreq mreq; - struct sockaddr_in6 in6; - memcpy(&in6, ai->ai_addr, sizeof in6); - memcpy(&mreq.ipv6mr_multiaddr, &in6.sin6_addr, sizeof mreq.ipv6mr_multiaddr); - mreq.ipv6mr_interface = in6.sin6_scope_id; - if(setsockopt(device_fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, (void *)&mreq, sizeof mreq)) { - logger(LOG_ERR, "Cannot join multicast group %s %s: %s", host, port, sockstrerror(sockerrno)); - closesocket(device_fd); - free(host); - return false; - } -#ifdef IPV6_MULTICAST_LOOP - setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (const void *)&one, sizeof one); -#endif -#ifdef IPV6_MULTICAST_HOPS - setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (void *)&ttl, sizeof ttl); -#endif - } break; -#endif - - default: - logger(LOG_ERR, "Multicast for address family %x unsupported", ai->ai_family); + case AF_INET: { + struct ip_mreq mreq; + struct sockaddr_in in; + memcpy(&in, ai->ai_addr, sizeof(in)); + mreq.imr_multiaddr.s_addr = in.sin_addr.s_addr; + mreq.imr_interface.s_addr = htonl(INADDR_ANY); + + if(setsockopt(device_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (void *)&mreq, sizeof(mreq))) { + logger(LOG_ERR, "Cannot join multicast group %s %s: %s", host, port, sockstrerror(sockerrno)); closesocket(device_fd); free(host); return false; + } + +#ifdef IP_MULTICAST_LOOP + setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_LOOP, (const void *)&one, sizeof(one)); +#endif +#ifdef IP_MULTICAST_TTL + setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_TTL, (void *)&ttl, sizeof(ttl)); +#endif + } + break; +#endif + +#ifdef IPV6_JOIN_GROUP + + case AF_INET6: { + struct ipv6_mreq mreq; + struct sockaddr_in6 in6; + memcpy(&in6, ai->ai_addr, sizeof(in6)); + memcpy(&mreq.ipv6mr_multiaddr, &in6.sin6_addr, sizeof(mreq.ipv6mr_multiaddr)); + mreq.ipv6mr_interface = in6.sin6_scope_id; + + if(setsockopt(device_fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, (void *)&mreq, sizeof(mreq))) { + logger(LOG_ERR, "Cannot join multicast group %s %s: %s", host, port, sockstrerror(sockerrno)); + closesocket(device_fd); + free(host); + return false; + } + +#ifdef IPV6_MULTICAST_LOOP + setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (const void *)&one, sizeof(one)); +#endif +#ifdef IPV6_MULTICAST_HOPS + setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (void *)&ttl, sizeof(ttl)); +#endif + } + break; +#endif + + default: + logger(LOG_ERR, "Multicast for address family %x unsupported", ai->ai_family); + closesocket(device_fd); + free(host); + return false; } free(host); @@ -158,8 +169,9 @@ static void close_device(void) { free(device); free(iface); - if(ai) + if(ai) { freeaddrinfo(ai); + } } static bool read_packet(vpn_packet_t *packet) { @@ -167,11 +179,11 @@ static bool read_packet(vpn_packet_t *packet) { if((lenin = recv(device_fd, (void *)packet->data, MTU, 0)) <= 0) { logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); + device, strerror(errno)); return false; } - if(!memcmp(&ignore_src, packet->data + 6, sizeof ignore_src)) { + if(!memcmp(&ignore_src, packet->data + 6, sizeof(ignore_src))) { ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Ignoring loopback packet of %d bytes from %s", lenin, device_info); packet->len = 0; return true; @@ -182,24 +194,24 @@ static bool read_packet(vpn_packet_t *packet) { device_total_in += packet->len; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, - device_info); + device_info); return true; } static bool write_packet(vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); if(sendto(device_fd, (void *)packet->data, packet->len, 0, ai->ai_addr, ai->ai_addrlen) < 0) { logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, - strerror(errno)); + strerror(errno)); return false; } device_total_out += packet->len; - memcpy(&ignore_src, packet->data + 6, sizeof ignore_src); + memcpy(&ignore_src, packet->data + 6, sizeof(ignore_src)); return true; } diff --git a/src/net.c b/src/net.c index b82dae8..4b64492 100644 --- a/src/net.c +++ b/src/net.c @@ -3,7 +3,7 @@ Copyright (C) 1998-2005 Ivo Timmermans, 2000-2015 Guus Sliepen 2006 Scott Lamb - 2011 Loïc Grenié + 2011 Loïc Grenié This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -70,21 +70,26 @@ static void purge(void) { if(!n->status.reachable) { ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Purging node %s (%s)", n->name, - n->hostname); + n->hostname); for(snode = n->subnet_tree->head; snode; snode = snext) { snext = snode->next; s = snode->data; send_del_subnet(everyone, s); - if(!strictsubnets) + + if(!strictsubnets) { subnet_del(n, s); + } } for(enode = n->edge_tree->head; enode; enode = enext) { enext = enode->next; e = enode->data; - if(!tunnelserver) + + if(!tunnelserver) { send_del_edge(everyone, e); + } + edge_del(e); } } @@ -101,13 +106,16 @@ static void purge(void) { enext = enode->next; e = enode->data; - if(e->to == n) + if(e->to == n) { break; + } } if(!enode && (!strictsubnets || !n->subnet_tree->head)) /* in strictsubnets mode do not delete nodes with subnets */ + { node_del(n); + } } } } @@ -130,31 +138,45 @@ static int build_fdset(fd_set *readset, fd_set *writeset) { if(c->status.remove) { connection_del(c); - if(!connection_tree->head) + + if(!connection_tree->head) { purge(); + } } else { FD_SET(c->socket, readset); - if(c->outbuflen > 0 || c->status.connecting) + + if(c->outbuflen > 0 || c->status.connecting) { FD_SET(c->socket, writeset); - if(c->socket > max) + } + + if(c->socket > max) { max = c->socket; + } } } for(i = 0; i < listen_sockets; i++) { FD_SET(listen_socket[i].tcp, readset); - if(listen_socket[i].tcp > max) + + if(listen_socket[i].tcp > max) { max = listen_socket[i].tcp; + } + FD_SET(listen_socket[i].udp, readset); - if(listen_socket[i].udp > max) + + if(listen_socket[i].udp > max) { max = listen_socket[i].udp; + } } - if(device_fd >= 0) + if(device_fd >= 0) { FD_SET(device_fd, readset); - if(device_fd > max) + } + + if(device_fd > max) { max = device_fd; - + } + return max; } @@ -166,20 +188,23 @@ static int build_fdset(fd_set *readset, fd_set *writeset) { - Deactivate the host */ void terminate_connection(connection_t *c, bool report) { - if(c->status.remove) + if(c->status.remove) { return; + } ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Closing connection with %s (%s)", - c->name, c->hostname); + c->name, c->hostname); c->status.remove = true; c->status.active = false; - if(c->node) + if(c->node) { c->node->connection = NULL; + } - if(c->socket) + if(c->socket) { closesocket(c->socket); + } if(c->edge) { if(!c->node) { @@ -188,8 +213,9 @@ void terminate_connection(connection_t *c, bool report) { abort(); } - if(report && !tunnelserver) + if(report && !tunnelserver) { send_del_edge(everyone, c->edge); + } edge_del(c->edge); @@ -202,9 +228,12 @@ void terminate_connection(connection_t *c, bool report) { if(report && !c->node->status.reachable) { edge_t *e; e = lookup_edge(c->node, myself); + if(e) { - if(!tunnelserver) + if(!tunnelserver) { send_del_edge(everyone, e); + } + edge_del(e); } } @@ -216,13 +245,14 @@ void terminate_connection(connection_t *c, bool report) { if(c->outgoing) { c->status.remove = false; - do_outgoing_connection(c); + do_outgoing_connection(c); } #ifndef HAVE_MINGW /* Clean up dead proxy processes */ while(waitpid(-1, NULL, WNOHANG) > 0); + #endif } @@ -246,7 +276,7 @@ static void check_dead_connections(void) { if(c->status.active) { if(c->status.pinged) { ifdebug(CONNECTIONS) logger(LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds", - c->name, c->hostname, (long)(now - c->last_ping_time)); + c->name, c->hostname, (long)(now - c->last_ping_time)); c->status.timeout = true; terminate_connection(c, true); } else if(c->last_ping_time + pinginterval <= now) { @@ -255,12 +285,14 @@ static void check_dead_connections(void) { } else { if(c->status.remove) { logger(LOG_WARNING, "Old connection_t for %s (%s) status %04x still lingering, deleting...", - c->name, c->hostname, bitfield_to_int(&c->status, sizeof c->status)); + c->name, c->hostname, bitfield_to_int(&c->status, sizeof(c->status))); connection_del(c); continue; } + ifdebug(CONNECTIONS) logger(LOG_WARNING, "Timeout from %s (%s) during authentication", - c->name, c->hostname); + c->name, c->hostname); + if(c->status.connecting) { c->status.connecting = false; closesocket(c->socket); @@ -274,8 +306,8 @@ static void check_dead_connections(void) { if(c->outbuflen > 0 && c->last_flushed_time + pingtimeout <= now) { if(c->status.active) { ifdebug(CONNECTIONS) logger(LOG_INFO, - "%s (%s) could not flush for %ld seconds (%d bytes remaining)", - c->name, c->hostname, (long)(now - c->last_flushed_time), c->outbuflen); + "%s (%s) could not flush for %ld seconds (%d bytes remaining)", + c->name, c->hostname, (long)(now - c->last_flushed_time), c->outbuflen); c->status.timeout = true; terminate_connection(c, true); } @@ -287,7 +319,7 @@ static void check_dead_connections(void) { check all connections to see if anything happened on their sockets */ -static void check_network_activity(fd_set * readset, fd_set * writeset) { +static void check_network_activity(fd_set *readset, fd_set *writeset) { connection_t *c; avl_node_t *node; int result, i; @@ -306,6 +338,7 @@ static void check_network_activity(fd_set * readset, fd_set * writeset) { } else { usleep(errors * 50000); errors++; + if(errors > 10) { logger(LOG_ERR, "Too many errors from %s, exiting!", device); running = false; @@ -317,20 +350,21 @@ static void check_network_activity(fd_set * readset, fd_set * writeset) { for(node = connection_tree->head; node; node = node->next) { c = node->data; - if(c->status.remove) + if(c->status.remove) { continue; + } if(FD_ISSET(c->socket, writeset)) { if(c->status.connecting) { c->status.connecting = false; getsockopt(c->socket, SOL_SOCKET, SO_ERROR, (void *)&result, &len); - if(!result) + if(!result) { finish_connecting(c); - else { + } else { ifdebug(CONNECTIONS) logger(LOG_DEBUG, - "Error while connecting to %s (%s): %s", - c->name, c->hostname, sockstrerror(result)); + "Error while connecting to %s (%s): %s", + c->name, c->hostname, sockstrerror(result)); closesocket(c->socket); do_outgoing_connection(c); continue; @@ -352,11 +386,13 @@ static void check_network_activity(fd_set * readset, fd_set * writeset) { } for(i = 0; i < listen_sockets; i++) { - if(FD_ISSET(listen_socket[i].udp, readset)) + if(FD_ISSET(listen_socket[i].udp, readset)) { handle_incoming_vpn_data(i); + } - if(FD_ISSET(listen_socket[i].tcp, readset)) + if(FD_ISSET(listen_socket[i].tcp, readset)) { handle_new_meta_connection(listen_socket[i].tcp); + } } } @@ -379,12 +415,15 @@ int main_loop(void) { last_ping_check = now; last_config_check = now; last_graph_dump = now; - + srand(now); #ifdef HAVE_PSELECT - if(lookup_config(config_tree, "GraphDumpFile")) + + if(lookup_config(config_tree, "GraphDumpFile")) { graph_dump = true; + } + /* Block SIGHUP & SIGALRM */ sigemptyset(&block_mask); sigaddset(&block_mask, SIGHUP); @@ -397,16 +436,21 @@ int main_loop(void) { while(running) { #ifdef HAVE_PSELECT next_event = last_ping_check + pingtimeout; - if(graph_dump && next_event > last_graph_dump + 60) + + if(graph_dump && next_event > last_graph_dump + 60) { next_event = last_graph_dump + 60; + } - if((event = peek_next_event()) && next_event > event->time) + if((event = peek_next_event()) && next_event > event->time) { next_event = event->time; + } - if(next_event <= now) + if(next_event <= now) { tv.tv_sec = 0; - else + } else { tv.tv_sec = next_event - now; + } + tv.tv_nsec = 0; #else tv.tv_sec = 1; @@ -436,8 +480,9 @@ int main_loop(void) { } } - if(r > 0) + if(r > 0) { check_network_activity(&readset, &writeset); + } if(do_purge) { purge(); @@ -450,8 +495,9 @@ int main_loop(void) { check_dead_connections(); last_ping_check = now; - if(routing_mode == RMODE_SWITCH) + if(routing_mode == RMODE_SWITCH) { age_subnets(); + } age_past_requests(); @@ -465,6 +511,7 @@ int main_loop(void) { for(node = node_tree->head; node; node = node->next) { n = node->data; + if(n->inkey) { free(n->inkey); n->inkey = NULL; @@ -484,12 +531,16 @@ int main_loop(void) { logger(LOG_WARNING, "Possible node with same Name as us! Sleeping %d seconds.", sleeptime); usleep(sleeptime * 1000000LL); sleeptime *= 2; - if(sleeptime < 0) + + if(sleeptime < 0) { sleeptime = 3600; + } } else { sleeptime /= 2; - if(sleeptime < 10) + + if(sleeptime < 10) { sleeptime = 10; + } } contradicting_add_edge = 0; @@ -500,11 +551,15 @@ int main_loop(void) { avl_node_t *node; logger(LOG_INFO, "Flushing event queue"); expire_events(); + for(node = connection_tree->head; node; node = node->next) { connection_t *c = node->data; - if(c->status.active) + + if(c->status.active) { send_ping(c); + } } + sigalrm = false; } @@ -518,11 +573,11 @@ int main_loop(void) { avl_node_t *node, *next; char *fname; struct stat s; - + sighup = false; reopenlogger(); - + /* Reread our own configuration file */ exit_configuration(&config_tree); @@ -552,20 +607,24 @@ int main_loop(void) { for(list_node_t *node = outgoing_list->head; node; node = node->next) { outgoing_t *outgoing = node->data; - if(outgoing->event) + if(outgoing->event) { event_del(outgoing->event); + } } list_delete_list(outgoing_list); /* Close connections to hosts that have a changed or deleted host config file */ - + for(node = connection_tree->head; node; node = node->next) { c = node->data; - + xasprintf(&fname, "%s/hosts/%s", confbase, c->name); - if(stat(fname, &s) || s.st_mtime > last_config_check) + + if(stat(fname, &s) || s.st_mtime > last_config_check) { terminate_connection(c, c->status.active); + } + free(fname); } @@ -586,26 +645,32 @@ int main_loop(void) { for(node = subnet_tree->head; node; node = next) { next = node->next; subnet = node->data; + if(subnet->expires == 1) { send_del_subnet(everyone, subnet); - if(subnet->owner->status.reachable) + + if(subnet->owner->status.reachable) { subnet_update(subnet->owner, subnet, false); + } + subnet_del(subnet->owner, subnet); } else if(subnet->expires == -1) { subnet->expires = 0; } else { send_add_subnet(everyone, subnet); - if(subnet->owner->status.reachable) + + if(subnet->owner->status.reachable) { subnet_update(subnet->owner, subnet, true); + } } } } /* Try to make outgoing connections */ - + try_outgoing_connections(); } - + /* Dump graph if wanted every 60 seconds*/ if(last_graph_dump + 60 <= now) { diff --git a/src/net.h b/src/net.h index e251ebd..a73cb04 100644 --- a/src/net.h +++ b/src/net.h @@ -1,3 +1,6 @@ +#ifndef TINC_NET_H +#define TINC_NET_H + /* net.h -- header for net.c Copyright (C) 1998-2005 Ivo Timmermans @@ -18,23 +21,20 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_NET_H__ -#define __TINC_NET_H__ - #include #include "ipv6.h" #ifdef ENABLE_JUMBOGRAMS -#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ +#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ #else -#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ +#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ #endif -#define MAXSIZE (MTU + 4 + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + MTU/64 + 20) /* MTU + seqno + padding + HMAC + compressor overhead */ -#define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128) /* Enough room for a request with a MAXSIZEd packet or a 8192 bits RSA key */ +#define MAXSIZE (MTU + 4 + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + MTU/64 + 20) /* MTU + seqno + padding + HMAC + compressor overhead */ +#define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128) /* Enough room for a request with a MAXSIZEd packet or a 8192 bits RSA key */ -#define MAXSOCKETS 128 /* Overkill... */ +#define MAXSOCKETS 128 /* Overkill... */ typedef struct mac_t { uint8_t x[6]; @@ -48,7 +48,7 @@ typedef struct ipv6_t { uint16_t x[8]; } ipv6_t; -typedef short length_t; +typedef uint16_t length_t; #define AF_UNKNOWN 255 @@ -77,9 +77,9 @@ typedef union sockaddr_t { #endif typedef struct vpn_packet_t { - length_t len; /* the actual number of bytes in the `data' field */ - int priority; /* priority or TOS */ - uint32_t seqno; /* 32 bits sequence number (network byte order of course) */ + length_t len; /* the actual number of bytes in the `data' field */ + int priority; /* priority or TOS */ + uint32_t seqno; /* 32 bits sequence number (network byte order of course) */ uint8_t data[MAXSIZE]; } vpn_packet_t; @@ -129,26 +129,26 @@ extern volatile bool running; #include "connection.h" #include "node.h" -extern void retry_outgoing(outgoing_t *); -extern void handle_incoming_vpn_data(int); -extern void finish_connecting(struct connection_t *); -extern void do_outgoing_connection(struct connection_t *); -extern bool handle_new_meta_connection(int); -extern int setup_listen_socket(const sockaddr_t *); -extern int setup_vpn_in_socket(const sockaddr_t *); -extern void send_packet(const struct node_t *, vpn_packet_t *); -extern void receive_tcppacket(struct connection_t *, const char *, int); -extern void broadcast_packet(const struct node_t *, vpn_packet_t *); +extern void retry_outgoing(outgoing_t *outgoing); +extern void handle_incoming_vpn_data(int sock); +extern void finish_connecting(struct connection_t *c); +extern void do_outgoing_connection(struct connection_t *c); +extern bool handle_new_meta_connection(int sock); +extern int setup_listen_socket(const sockaddr_t *sa); +extern int setup_vpn_in_socket(const sockaddr_t *sa); +extern void send_packet(const struct node_t *n, vpn_packet_t *packet); +extern void receive_tcppacket(struct connection_t *c, const char *buffer, length_t len); +extern void broadcast_packet(const struct node_t *, vpn_packet_t *packet); extern char *get_name(void); extern bool setup_network(void); -extern void setup_outgoing_connection(struct outgoing_t *); +extern void setup_outgoing_connection(struct outgoing_t *outgoing); extern void try_outgoing_connections(void); extern void close_network_connections(void); extern int main_loop(void); -extern void terminate_connection(struct connection_t *, bool); -extern void flush_queue(struct node_t *); -extern bool read_rsa_public_key(struct connection_t *); -extern void send_mtu_probe(struct node_t *); +extern void terminate_connection(struct connection_t *c, bool report); +extern void flush_queue(struct node_t *n); +extern bool read_rsa_public_key(struct connection_t *c); +extern void send_mtu_probe(struct node_t *n); extern void load_all_subnets(void); #ifndef HAVE_MINGW @@ -157,4 +157,4 @@ extern void load_all_subnets(void); extern CRITICAL_SECTION mutex; #endif -#endif /* __TINC_NET_H__ */ +#endif diff --git a/src/net_packet.c b/src/net_packet.c index 18eaf34..faf8378 100644 --- a/src/net_packet.c +++ b/src/net_packet.c @@ -85,7 +85,7 @@ void send_mtu_probe(node_t *n) { vpn_packet_t packet; int len, i; int timeout = 1; - + n->mtuprobes++; n->mtuevent = NULL; @@ -114,10 +114,12 @@ void send_mtu_probe(node_t *n) { } if(n->mtuprobes == 30 || (n->mtuprobes < 30 && n->minmtu >= n->maxmtu)) { - if(n->minmtu > n->maxmtu) + if(n->minmtu > n->maxmtu) { n->minmtu = n->maxmtu; - else + } else { n->maxmtu = n->minmtu; + } + n->mtu = n->minmtu; ifdebug(TRAFFIC) logger(LOG_INFO, "Fixing MTU of %s (%s) to %d after %d probes", n->name, n->hostname, n->mtu, n->mtuprobes); n->mtuprobes = 31; @@ -132,8 +134,10 @@ void send_mtu_probe(node_t *n) { for(i = 0; i < 4 + localdiscovery; i++) { if(i == 0) { - if(n->mtuprobes < 30 || n->maxmtu + 8 >= MTU) + if(n->mtuprobes < 30 || n->maxmtu + 8 >= MTU) { continue; + } + len = n->maxmtu + 8; } else if(n->maxmtu <= n->minmtu) { len = n->maxmtu; @@ -141,16 +145,19 @@ void send_mtu_probe(node_t *n) { len = n->minmtu + 1 + rand() % (n->maxmtu - n->minmtu); } - if(len < 64) + if(len < 64) { len = 64; - + } + memset(packet.data, 0, 14); RAND_bytes(packet.data + 14, len - 14); packet.len = len; - if(i >= 4 && n->mtuprobes <= 10) + + if(i >= 4 && n->mtuprobes <= 10) { packet.priority = -1; - else + } else { packet.priority = 0; + } ifdebug(TRAFFIC) logger(LOG_INFO, "Sending MTU probe length %d to %s (%s)", len, n->name, n->hostname); @@ -173,23 +180,27 @@ void mtu_probe_h(node_t *n, vpn_packet_t *packet, length_t len) { send_udppacket(n, packet); } else { if(n->mtuprobes > 30) { - if (len == n->maxmtu + 8) { + if(len == n->maxmtu + 8) { ifdebug(TRAFFIC) logger(LOG_INFO, "Increase in PMTU to %s (%s) detected, restarting PMTU discovery", n->name, n->hostname); n->maxmtu = MTU; n->mtuprobes = 10; return; } - if(n->minmtu) + if(n->minmtu) { n->mtuprobes = 30; - else + } else { n->mtuprobes = 1; + } } - if(len > n->maxmtu) + if(len > n->maxmtu) { len = n->maxmtu; - if(n->minmtu < len) + } + + if(n->minmtu < len) { n->minmtu = len; + } } } @@ -203,27 +214,28 @@ static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t l lzo1x_1_compress(source, len, dest, &lzolen, lzo_wrkmem); return lzolen; #else - return -1; + return 0; #endif } else if(level < 10) { #ifdef HAVE_ZLIB unsigned long destlen = MAXSIZE; - if(compress2(dest, &destlen, source, len, level) == Z_OK) + + if(compress2(dest, &destlen, source, len, level) == Z_OK) { return destlen; - else + } else #endif - return -1; + return 0; } else { #ifdef HAVE_LZO lzo_uint lzolen = MAXSIZE; lzo1x_999_compress(source, len, dest, &lzolen, lzo_wrkmem); return lzolen; #else - return -1; + return 0; #endif } - - return -1; + + return 0; } static length_t uncompress_packet(uint8_t *dest, const uint8_t *source, length_t len, int level) { @@ -233,20 +245,25 @@ static length_t uncompress_packet(uint8_t *dest, const uint8_t *source, length_t } else if(level > 9) { #ifdef HAVE_LZO lzo_uint lzolen = MAXSIZE; - if(lzo1x_decompress_safe(source, len, dest, &lzolen, NULL) == LZO_E_OK) + + if(lzo1x_decompress_safe(source, len, dest, &lzolen, NULL) == LZO_E_OK) { return lzolen; - else + } else #endif - return -1; + return 0; } + #ifdef HAVE_ZLIB else { unsigned long destlen = MAXSIZE; - if(uncompress(dest, &destlen, source, len) == Z_OK) + + if(uncompress(dest, &destlen, source, len) == Z_OK) { return destlen; - else - return -1; + } else { + return 0; + } } + #endif return -1; @@ -256,7 +273,7 @@ static length_t uncompress_packet(uint8_t *dest, const uint8_t *source, length_t static void receive_packet(node_t *n, vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Received packet of %d bytes from %s (%s)", - packet->len, n->name, n->hostname); + packet->len, n->name, n->hostname); route(n, packet); } @@ -264,8 +281,9 @@ static void receive_packet(node_t *n, vpn_packet_t *packet) { static bool try_mac(const node_t *n, const vpn_packet_t *inpkt) { unsigned char hmac[EVP_MAX_MD_SIZE]; - if(!n->indigest || !n->inmaclength || !n->inkey || inpkt->len < sizeof inpkt->seqno + n->inmaclength) + if(!n->indigest || !n->inmaclength || !n->inkey || inpkt->len < sizeof(inpkt->seqno) + n->inmaclength) { return false; + } HMAC(n->indigest, n->inkey, n->inkeylength, (unsigned char *) &inpkt->seqno, inpkt->len - n->inmaclength, (unsigned char *)hmac, NULL); @@ -279,11 +297,10 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { vpn_packet_t *outpkt; int outlen, outpad; unsigned char hmac[EVP_MAX_MD_SIZE]; - int i; if(!n->inkey) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Got packet from %s (%s) but he hasn't got our key yet", - n->name, n->hostname); + n->name, n->hostname); return; } @@ -291,7 +308,7 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { if(inpkt->len < sizeof(inpkt->seqno) + n->inmaclength) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Got too short packet from %s (%s)", - n->name, n->hostname); + n->name, n->hostname); return; } @@ -300,11 +317,11 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { if(n->indigest && n->inmaclength) { inpkt->len -= n->inmaclength; HMAC(n->indigest, n->inkey, n->inkeylength, - (unsigned char *) &inpkt->seqno, inpkt->len, (unsigned char *)hmac, NULL); + (unsigned char *) &inpkt->seqno, inpkt->len, (unsigned char *)hmac, NULL); if(memcmp_constant_time(hmac, (char *) &inpkt->seqno + inpkt->len, n->inmaclength)) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Got unauthenticated packet from %s (%s)", - n->name, n->hostname); + n->name, n->hostname); return; } } @@ -315,14 +332,14 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { outpkt = pkt[nextpkt++]; if(!EVP_DecryptInit_ex(n->inctx, NULL, NULL, NULL, NULL) - || !EVP_DecryptUpdate(n->inctx, (unsigned char *) &outpkt->seqno, &outlen, - (unsigned char *) &inpkt->seqno, inpkt->len) - || !EVP_DecryptFinal_ex(n->inctx, (unsigned char *) &outpkt->seqno + outlen, &outpad)) { + || !EVP_DecryptUpdate(n->inctx, (unsigned char *) &outpkt->seqno, &outlen, + (unsigned char *) &inpkt->seqno, inpkt->len) + || !EVP_DecryptFinal_ex(n->inctx, (unsigned char *) &outpkt->seqno + outlen, &outpad)) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Error decrypting packet from %s (%s): %s", - n->name, n->hostname, ERR_error_string(ERR_get_error(), NULL)); + n->name, n->hostname, ERR_error_string(ERR_get_error(), NULL)); return; } - + outpkt->len = outlen + outpad; inpkt = outpkt; } @@ -337,21 +354,23 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { if(inpkt->seqno >= n->received_seqno + replaywin * 8) { if(n->farfuture++ < replaywin >> 2) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Packet from %s (%s) is %d seqs in the future, dropped (%u)", - n->name, n->hostname, inpkt->seqno - n->received_seqno - 1, n->farfuture); + n->name, n->hostname, inpkt->seqno - n->received_seqno - 1, n->farfuture); return; } + ifdebug(TRAFFIC) logger(LOG_WARNING, "Lost %d packets from %s (%s)", - inpkt->seqno - n->received_seqno - 1, n->name, n->hostname); + inpkt->seqno - n->received_seqno - 1, n->name, n->hostname); memset(n->late, 0, replaywin); - } else if (inpkt->seqno <= n->received_seqno) { + } else if(inpkt->seqno <= n->received_seqno) { if((n->received_seqno >= replaywin * 8 && inpkt->seqno <= n->received_seqno - replaywin * 8) || !(n->late[(inpkt->seqno / 8) % replaywin] & (1 << inpkt->seqno % 8))) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Got late or replayed packet from %s (%s), seqno %d, last received %d", - n->name, n->hostname, inpkt->seqno, n->received_seqno); + n->name, n->hostname, inpkt->seqno, n->received_seqno); return; } } else { - for(i = n->received_seqno + 1; i < inpkt->seqno; i++) + for(uint32_t i = n->received_seqno + 1; i < inpkt->seqno; i++) { n->late[(i / 8) % replaywin] |= 1 << i % 8; + } } } @@ -359,11 +378,13 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { n->late[(inpkt->seqno / 8) % replaywin] &= ~(1 << inpkt->seqno % 8); } - if(inpkt->seqno > n->received_seqno) + if(inpkt->seqno > n->received_seqno) { n->received_seqno = inpkt->seqno; - - if(n->received_seqno > MAX_SEQNO) + } + + if(n->received_seqno > MAX_SEQNO) { keyexpires = 0; + } /* Decompress the packet */ @@ -372,36 +393,41 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) { if(n->incompression) { outpkt = pkt[nextpkt++]; - if((outpkt->len = uncompress_packet(outpkt->data, inpkt->data, inpkt->len, n->incompression)) < 0) { + if(!(outpkt->len = uncompress_packet(outpkt->data, inpkt->data, inpkt->len, n->incompression))) { ifdebug(TRAFFIC) logger(LOG_ERR, "Error while uncompressing packet from %s (%s)", - n->name, n->hostname); + n->name, n->hostname); return; } inpkt = outpkt; - origlen -= MTU/64 + 20; + origlen -= MTU / 64 + 20; } inpkt->priority = 0; - if(!inpkt->data[12] && !inpkt->data[13]) + if(!inpkt->data[12] && !inpkt->data[13]) { mtu_probe_h(n, inpkt, origlen); - else + } else { receive_packet(n, inpkt); + } } -void receive_tcppacket(connection_t *c, const char *buffer, int len) { +void receive_tcppacket(connection_t *c, const char *buffer, length_t len) { vpn_packet_t outpkt; - if(len > sizeof outpkt.data) + if(len > sizeof(outpkt.data)) { return; + } outpkt.len = len; - if(c->options & OPTION_TCPONLY) + + if(c->options & OPTION_TCPONLY) { outpkt.priority = 0; - else + } else { outpkt.priority = -1; + } + memcpy(outpkt.data, buffer, len); receive_packet(c->node, &outpkt); @@ -426,8 +452,8 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(!n->status.validkey) { ifdebug(TRAFFIC) logger(LOG_INFO, - "No valid key known yet for %s (%s), forwarding via TCP", - n->name, n->hostname); + "No valid key known yet for %s (%s), forwarding via TCP", + n->name, n->hostname); if(n->last_req_key + 10 <= now) { send_req_key(n); @@ -441,13 +467,14 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(n->options & OPTION_PMTU_DISCOVERY && inpkt->len > n->minmtu && (inpkt->data[12] | inpkt->data[13])) { ifdebug(TRAFFIC) logger(LOG_INFO, - "Packet for %s (%s) larger than minimum MTU, forwarding via %s", - n->name, n->hostname, n != n->nexthop ? n->nexthop->name : "TCP"); + "Packet for %s (%s) larger than minimum MTU, forwarding via %s", + n->name, n->hostname, n != n->nexthop ? n->nexthop->name : "TCP"); - if(n != n->nexthop) + if(n != n->nexthop) { send_packet(n->nexthop, origpkt); - else + } else { send_tcppacket(n->nexthop->connection, origpkt); + } return; } @@ -460,9 +487,9 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(n->outcompression) { outpkt = pkt[nextpkt++]; - if((outpkt->len = compress_packet(outpkt->data, inpkt->data, inpkt->len, n->outcompression)) < 0) { + if(!(outpkt->len = compress_packet(outpkt->data, inpkt->data, inpkt->len, n->outcompression))) { ifdebug(TRAFFIC) logger(LOG_ERR, "Error while compressing packet to %s (%s)", - n->name, n->hostname); + n->name, n->hostname); return; } @@ -480,11 +507,11 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { outpkt = pkt[nextpkt++]; if(!EVP_EncryptInit_ex(n->outctx, NULL, NULL, NULL, NULL) - || !EVP_EncryptUpdate(n->outctx, (unsigned char *) &outpkt->seqno, &outlen, - (unsigned char *) &inpkt->seqno, inpkt->len) - || !EVP_EncryptFinal_ex(n->outctx, (unsigned char *) &outpkt->seqno + outlen, &outpad)) { + || !EVP_EncryptUpdate(n->outctx, (unsigned char *) &outpkt->seqno, &outlen, + (unsigned char *) &inpkt->seqno, inpkt->len) + || !EVP_EncryptFinal_ex(n->outctx, (unsigned char *) &outpkt->seqno + outlen, &outpad)) { ifdebug(TRAFFIC) logger(LOG_ERR, "Error while encrypting packet to %s (%s): %s", - n->name, n->hostname, ERR_error_string(ERR_get_error(), NULL)); + n->name, n->hostname, ERR_error_string(ERR_get_error(), NULL)); goto end; } @@ -496,7 +523,7 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(n->outdigest && n->outmaclength) { HMAC(n->outdigest, n->outkey, n->outkeylength, (unsigned char *) &inpkt->seqno, - inpkt->len, (unsigned char *) &inpkt->seqno + inpkt->len, NULL); + inpkt->len, (unsigned char *) &inpkt->seqno + inpkt->len, NULL); inpkt->len += n->outmaclength; } @@ -522,7 +549,8 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(origpriority == -1 && n->prevedge) { sock = rand() % listen_sockets; - memset(&broadcast, 0, sizeof broadcast); + memset(&broadcast, 0, sizeof(broadcast)); + if(listen_socket[sock].sa.sa.sa_family == AF_INET6) { broadcast.in6.sin6_family = AF_INET6; broadcast.in6.sin6_addr.s6_addr[0x0] = 0xff; @@ -535,11 +563,13 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { broadcast.in.sin_addr.s_addr = -1; broadcast.in.sin_port = n->prevedge->address.in.sin_port; } + sa = &broadcast.sa; sl = SALEN(broadcast.sa); } else { - if(origpriority == -1) + if(origpriority == -1) { origpriority = 0; + } sa = &(n->address.sa); sl = SALEN(n->address.sa); @@ -548,21 +578,31 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(priorityinheritance && origpriority != listen_socket[n->sock].priority) { listen_socket[n->sock].priority = origpriority; + switch(listen_socket[n->sock].sa.sa.sa_family) { #if defined(SOL_IP) && defined(IP_TOS) + case AF_INET: ifdebug(TRAFFIC) logger(LOG_DEBUG, "Setting IPv4 outgoing packet priority to %d", origpriority); - if(setsockopt(listen_socket[n->sock].udp, SOL_IP, IP_TOS, (void *)&origpriority, sizeof(origpriority))) /* SO_PRIORITY doesn't seem to work */ + + if(setsockopt(listen_socket[n->sock].udp, SOL_IP, IP_TOS, (void *)&origpriority, sizeof(origpriority))) { /* SO_PRIORITY doesn't seem to work */ logger(LOG_ERR, "System call `%s' failed: %s", "setsockopt", strerror(errno)); + } + break; #endif #if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS) + case AF_INET6: ifdebug(TRAFFIC) logger(LOG_DEBUG, "Setting IPv6 outgoing packet priority to %d", origpriority); - if(setsockopt(listen_socket[n->sock].udp, IPPROTO_IPV6, IPV6_TCLASS, (void *)&origpriority, sizeof(origpriority))) + + if(setsockopt(listen_socket[n->sock].udp, IPPROTO_IPV6, IPV6_TCLASS, (void *)&origpriority, sizeof(origpriority))) { logger(LOG_ERR, "System call `%s' failed: %s", "setsockopt", strerror(errno)); + } + break; #endif + default: break; } @@ -570,12 +610,16 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) { if(sendto(listen_socket[sock].udp, (char *) &inpkt->seqno, inpkt->len, 0, sa, sl) < 0 && !sockwouldblock(sockerrno)) { if(sockmsgsize(sockerrno)) { - if(n->maxmtu >= origlen) + if(n->maxmtu >= origlen) { n->maxmtu = origlen - 1; - if(n->mtu >= origlen) + } + + if(n->mtu >= origlen) { n->mtu = origlen - 1; - } else + } + } else { ifdebug(TRAFFIC) logger(LOG_WARNING, "Error sending packet to %s (%s): %s", n->name, n->hostname, sockstrerror(sockerrno)); + } } end: @@ -589,18 +633,20 @@ void send_packet(const node_t *n, vpn_packet_t *packet) { node_t *via; if(n == myself) { - if(overwrite_mac) - memcpy(packet->data, mymac.x, ETH_ALEN); + if(overwrite_mac) { + memcpy(packet->data, mymac.x, ETH_ALEN); + } + devops.write(packet); return; } ifdebug(TRAFFIC) logger(LOG_ERR, "Sending packet of %d bytes to %s (%s)", - packet->len, n->name, n->hostname); + packet->len, n->name, n->hostname); if(!n->status.reachable) { ifdebug(TRAFFIC) logger(LOG_INFO, "Node %s (%s) is not reachable", - n->name, n->hostname); + n->name, n->hostname); return; } @@ -608,13 +654,15 @@ void send_packet(const node_t *n, vpn_packet_t *packet) { if(via != n) ifdebug(TRAFFIC) logger(LOG_INFO, "Sending packet to %s via %s (%s)", - n->name, via->name, n->via->hostname); + n->name, via->name, n->via->hostname); if(packet->priority == -1 || ((myself->options | via->options) & OPTION_TCPONLY)) { - if(!send_tcppacket(via->connection, packet)) + if(!send_tcppacket(via->connection, packet)) { terminate_connection(via->connection, true); - } else + } + } else { send_udppacket(via, packet); + } } /* Broadcast a packet using the minimum spanning tree */ @@ -625,47 +673,54 @@ void broadcast_packet(const node_t *from, vpn_packet_t *packet) { node_t *n; // Always give ourself a copy of the packet. - if(from != myself) + if(from != myself) { send_packet(myself, packet); + } // In TunnelServer mode, do not forward broadcast packets. - // The MST might not be valid and create loops. - if(tunnelserver || broadcast_mode == BMODE_NONE) + // The MST might not be valid and create loops. + if(tunnelserver || broadcast_mode == BMODE_NONE) { return; + } ifdebug(TRAFFIC) logger(LOG_INFO, "Broadcasting packet of %d bytes from %s (%s)", - packet->len, from->name, from->hostname); + packet->len, from->name, from->hostname); switch(broadcast_mode) { - // In MST mode, broadcast packets travel via the Minimum Spanning Tree. - // This guarantees all nodes receive the broadcast packet, and - // usually distributes the sending of broadcast packets over all nodes. - case BMODE_MST: - for(node = connection_tree->head; node; node = node->next) { - c = node->data; + // In MST mode, broadcast packets travel via the Minimum Spanning Tree. + // This guarantees all nodes receive the broadcast packet, and + // usually distributes the sending of broadcast packets over all nodes. + case BMODE_MST: + for(node = connection_tree->head; node; node = node->next) { + c = node->data; - if(c->status.active && c->status.mst && c != from->nexthop->connection) - send_packet(c->node, packet); + if(c->status.active && c->status.mst && c != from->nexthop->connection) { + send_packet(c->node, packet); } + } + + break; + + // In direct mode, we send copies to each node we know of. + // However, this only reaches nodes that can be reached in a single hop. + // We don't have enough information to forward broadcast packets in this case. + case BMODE_DIRECT: + if(from != myself) { break; + } - // In direct mode, we send copies to each node we know of. - // However, this only reaches nodes that can be reached in a single hop. - // We don't have enough information to forward broadcast packets in this case. - case BMODE_DIRECT: - if(from != myself) - break; + for(node = node_udp_tree->head; node; node = node->next) { + n = node->data; - for(node = node_udp_tree->head; node; node = node->next) { - n = node->data; - - if(n->status.reachable && n != myself && ((n->via == myself && n->nexthop == n) || n->via == n)) - send_packet(n, packet); + if(n->status.reachable && n != myself && ((n->via == myself && n->nexthop == n) || n->via == n)) { + send_packet(n, packet); } - break; + } - default: - break; + break; + + default: + break; } } @@ -678,14 +733,17 @@ static node_t *try_harder(const sockaddr_t *from, const vpn_packet_t *pkt) { for(node = edge_weight_tree->head; node; node = node->next) { e = node->data; - if(e->to == myself) + if(e->to == myself) { continue; + } - if(last_hard_try == now && sockaddrcmp_noport(from, &e->address)) + if(last_hard_try == now && sockaddrcmp_noport(from, &e->address)) { continue; + } - if(!try_mac(e->to, pkt)) + if(!try_mac(e->to, pkt)) { continue; + } n = e->to; break; @@ -702,30 +760,36 @@ void handle_incoming_vpn_data(int sock) { socklen_t fromlen = sizeof(from); node_t *n; - pkt.len = recvfrom(listen_socket[sock].udp, (char *) &pkt.seqno, MAXSIZE, 0, &from.sa, &fromlen); + ssize_t len = recvfrom(listen_socket[sock].udp, (char *) &pkt.seqno, MAXSIZE, 0, &from.sa, &fromlen); - if(pkt.len < 0) { - if(!sockwouldblock(sockerrno)) + if(len <= 0 || len > UINT16_MAX) { + if(len >= 0) { + logger(LOG_ERR, "Receiving packet with invalid size"); + } else if(!sockwouldblock(sockerrno)) { logger(LOG_ERR, "Receiving packet failed: %s", sockstrerror(sockerrno)); + } + return; } - sockaddrunmap(&from); /* Some braindead IPv6 implementations do stupid things. */ + pkt.len = len; + sockaddrunmap(&from); /* Some braindead IPv6 implementations do stupid things. */ n = lookup_node_udp(&from); if(!n) { n = try_harder(&from, &pkt); - if(n) + + if(n) { update_node_udp(n, &from); - else ifdebug(PROTOCOL) { + } else ifdebug(PROTOCOL) { hostname = sockaddr2hostname(&from); logger(LOG_WARNING, "Received UDP packet from unknown source %s", hostname); free(hostname); return; - } - else + } else { return; + } } n->sock = sock; diff --git a/src/net_setup.c b/src/net_setup.c index 2371f7e..13719f5 100644 --- a/src/net_setup.c +++ b/src/net_setup.c @@ -50,9 +50,12 @@ devops_t devops; #ifndef HAVE_RSA_SET0_KEY int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) { - BN_free(r->n); r->n = n; - BN_free(r->e); r->e = e; - BN_free(r->d); r->d = d; + BN_free(r->n); + r->n = n; + BN_free(r->e); + r->e = e; + BN_free(r->d); + r->d = d; return 1; } #endif @@ -73,19 +76,22 @@ bool read_rsa_public_key(connection_t *c) { /* First, check for simple PublicKey statement */ if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &key)) { - if(BN_hex2bn(&n, key) != strlen(key)) { + if((size_t)BN_hex2bn(&n, key) != strlen(key)) { free(key); logger(LOG_ERR, "Invalid PublicKey for %s!", c->name); return false; } + free(key); BN_hex2bn(&e, "FFFF"); + if(!n || !e || RSA_set0_key(c->rsa_key, n, e, NULL) != 1) { BN_free(e); BN_free(n); logger(LOG_ERR, "RSA_set0_key() failed with PublicKey for %s!", c->name); return false; } + return true; } @@ -105,7 +111,7 @@ bool read_rsa_public_key(connection_t *c) { if(c->rsa_key) { free(pubname); - return true; /* Woohoo. */ + return true; /* Woohoo. */ } /* If it fails, try PEM_read_RSA_PUBKEY. */ @@ -165,8 +171,9 @@ bool read_rsa_public_key(connection_t *c) { // RSA_blinding_on(c->rsa_key, NULL); fclose(fp); - if(c->rsa_key) + if(c->rsa_key) { return true; + } logger(LOG_ERR, "No public key for %s specified!", c->name); @@ -182,26 +189,32 @@ static bool read_rsa_private_key(void) { if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) { myself->connection->rsa_key = RSA_new(); + // RSA_blinding_on(myself->connection->rsa_key, NULL); - if(BN_hex2bn(&d, key) != strlen(key)) { + if((size_t)BN_hex2bn(&d, key) != strlen(key)) { logger(LOG_ERR, "Invalid PrivateKey for myself!"); free(key); return false; } + free(key); + if(!get_config_string(lookup_config(config_tree, "PublicKey"), &pubkey)) { BN_free(d); logger(LOG_ERR, "PrivateKey used but no PublicKey found!"); return false; } - if(BN_hex2bn(&n, pubkey) != strlen(pubkey)) { + + if((size_t)BN_hex2bn(&n, pubkey) != strlen(pubkey)) { free(pubkey); BN_free(d); logger(LOG_ERR, "Invalid PublicKey for myself!"); return false; } + free(pubkey); BN_hex2bn(&e, "FFFF"); + if(!n || !e || !d || RSA_set0_key(myself->connection->rsa_key, n, e, d) != 1) { BN_free(d); BN_free(e); @@ -209,17 +222,19 @@ static bool read_rsa_private_key(void) { logger(LOG_ERR, "RSA_set0_key() failed with PrivateKey for myself!"); return false; } + return true; } - if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname)) + if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname)) { xasprintf(&fname, "%s/rsa_key.priv", confbase); + } fp = fopen(fname, "r"); if(!fp) { logger(LOG_ERR, "Error reading RSA private key file `%s': %s", - fname, strerror(errno)); + fname, strerror(errno)); free(fname); return false; } @@ -228,11 +243,13 @@ static bool read_rsa_private_key(void) { struct stat s; if(!fstat(fileno(fp), &s)) { - if(s.st_mode & ~0100700) + if(s.st_mode & ~0100700) { logger(LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname); + } } else { logger(LOG_WARNING, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno)); } + #endif myself->connection->rsa_key = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL); @@ -240,7 +257,7 @@ static bool read_rsa_private_key(void) { if(!myself->connection->rsa_key) { logger(LOG_ERR, "Reading RSA private key file `%s' failed: %s", - fname, strerror(errno)); + fname, strerror(errno)); free(fname); return false; } @@ -264,6 +281,7 @@ void load_all_subnets(void) { xasprintf(&dname, "%s/hosts", confbase); dir = opendir(dname); + if(!dir) { logger(LOG_ERR, "Could not open %s: %s", dname, strerror(errno)); free(dname); @@ -271,14 +289,15 @@ void load_all_subnets(void) { } while((ent = readdir(dir))) { - if(!check_id(ent->d_name)) + if(!check_id(ent->d_name)) { continue; + } n = lookup_node(ent->d_name); - #ifdef _DIRENT_HAVE_D_TYPE +#ifdef _DIRENT_HAVE_D_TYPE //if(ent->d_type != DT_REG) - // continue; - #endif + // continue; +#endif xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name); init_configuration(&config_tree); @@ -293,8 +312,9 @@ void load_all_subnets(void) { } for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) { - if(!get_config_subnet(cfg, &s)) + if(!get_config_subnet(cfg, &s)) { continue; + } if((s2 = lookup_subnet(n, s))) { s2->expires = -1; @@ -314,31 +334,38 @@ char *get_name(void) { get_config_string(lookup_config(config_tree, "Name"), &name); - if(!name) + if(!name) { return NULL; + } if(*name == '$') { char *envname = getenv(name + 1); char hostname[32] = ""; + if(!envname) { if(strcmp(name + 1, "HOST")) { fprintf(stderr, "Invalid Name: environment variable %s does not exist\n", name + 1); free(name); return false; } - if(gethostname(hostname, sizeof hostname) || !*hostname) { + + if(gethostname(hostname, sizeof(hostname)) || !*hostname) { fprintf(stderr, "Could not get hostname: %s\n", strerror(errno)); free(name); return false; } + hostname[31] = 0; envname = hostname; } + free(name); name = xstrdup(envname); + for(char *c = name; *c; c++) - if(!isalnum(*c)) + if(!isalnum(*c)) { *c = '_'; + } } if(!check_id(name)) { @@ -361,8 +388,8 @@ static bool setup_myself(void) { char *address = NULL; char *proxy = NULL; char *space; - char *envp[5] = {NULL}; - struct addrinfo *ai, *aip, hint = {0}; + char *envp[5] = {}; + struct addrinfo *ai, *aip, hint = {}; bool choice; int i, err; int replaywin_int; @@ -391,29 +418,35 @@ static bool setup_myself(void) { read_config_file(config_tree, fname); free(fname); - if(!read_rsa_private_key()) + if(!read_rsa_private_key()) { return false; + } - if(!get_config_string(lookup_config(config_tree, "Port"), &myport)) + if(!get_config_string(lookup_config(config_tree, "Port"), &myport)) { myport = xstrdup("655"); - else + } else { port_specified = true; + } /* Ensure myport is numeric */ if(!atoi(myport)) { struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM); sockaddr_t sa; - if(!ai || !ai->ai_addr) + + if(!ai || !ai->ai_addr) { return false; + } + free(myport); memcpy(&sa, ai->ai_addr, ai->ai_addrlen); sockaddr2str(&sa, NULL, &myport); } if(get_config_string(lookup_config(config_tree, "Proxy"), &proxy)) { - if((space = strchr(proxy, ' '))) + if((space = strchr(proxy, ' '))) { *space++ = 0; + } if(!strcasecmp(proxy, "none")) { proxytype = PROXY_NONE; @@ -434,42 +467,56 @@ static bool setup_myself(void) { } switch(proxytype) { - case PROXY_NONE: - default: - break; + case PROXY_NONE: + default: + break; - case PROXY_EXEC: - if(!space || !*space) { - logger(LOG_ERR, "Argument expected for proxy type exec!"); - free(proxy); - return false; - } - proxyhost = xstrdup(space); - break; + case PROXY_EXEC: + if(!space || !*space) { + logger(LOG_ERR, "Argument expected for proxy type exec!"); + free(proxy); + return false; + } - case PROXY_SOCKS4: - case PROXY_SOCKS4A: - case PROXY_SOCKS5: - case PROXY_HTTP: - proxyhost = space; - if(space && (space = strchr(space, ' '))) - *space++ = 0, proxyport = space; - if(space && (space = strchr(space, ' '))) - *space++ = 0, proxyuser = space; - if(space && (space = strchr(space, ' '))) - *space++ = 0, proxypass = space; - if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) { - logger(LOG_ERR, "Host and port argument expected for proxy!"); - free(proxy); - return false; - } - proxyhost = xstrdup(proxyhost); - proxyport = xstrdup(proxyport); - if(proxyuser && *proxyuser) - proxyuser = xstrdup(proxyuser); - if(proxypass && *proxypass) - proxypass = xstrdup(proxypass); - break; + proxyhost = xstrdup(space); + break; + + case PROXY_SOCKS4: + case PROXY_SOCKS4A: + case PROXY_SOCKS5: + case PROXY_HTTP: + proxyhost = space; + + if(space && (space = strchr(space, ' '))) { + *space++ = 0, proxyport = space; + } + + if(space && (space = strchr(space, ' '))) { + *space++ = 0, proxyuser = space; + } + + if(space && (space = strchr(space, ' '))) { + *space++ = 0, proxypass = space; + } + + if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) { + logger(LOG_ERR, "Host and port argument expected for proxy!"); + free(proxy); + return false; + } + + proxyhost = xstrdup(proxyhost); + proxyport = xstrdup(proxyport); + + if(proxyuser && *proxyuser) { + proxyuser = xstrdup(proxyuser); + } + + if(proxypass && *proxypass) { + proxypass = xstrdup(proxypass); + } + + break; } free(proxy); @@ -480,8 +527,9 @@ static bool setup_myself(void) { cfg = lookup_config(config_tree, "Subnet"); while(cfg) { - if(!get_config_subnet(cfg, &subnet)) + if(!get_config_subnet(cfg, &subnet)) { return false; + } subnet_add(myself, subnet); @@ -490,14 +538,17 @@ static bool setup_myself(void) { /* Check some options */ - if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice) + if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice) { myself->options |= OPTION_INDIRECT; + } - if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice) + if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice) { myself->options |= OPTION_TCPONLY; + } - if(myself->options & OPTION_TCPONLY) + if(myself->options & OPTION_TCPONLY) { myself->options |= OPTION_INDIRECT; + } get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly); get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets); @@ -506,94 +557,112 @@ static bool setup_myself(void) { strictsubnets |= tunnelserver; if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) { - if(!strcasecmp(mode, "router")) + if(!strcasecmp(mode, "router")) { routing_mode = RMODE_ROUTER; - else if(!strcasecmp(mode, "switch")) + } else if(!strcasecmp(mode, "switch")) { routing_mode = RMODE_SWITCH; - else if(!strcasecmp(mode, "hub")) + } else if(!strcasecmp(mode, "hub")) { routing_mode = RMODE_HUB; - else { + } else { logger(LOG_ERR, "Invalid routing mode!"); free(mode); return false; } + free(mode); } if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) { - if(!strcasecmp(mode, "off")) + if(!strcasecmp(mode, "off")) { forwarding_mode = FMODE_OFF; - else if(!strcasecmp(mode, "internal")) + } else if(!strcasecmp(mode, "internal")) { forwarding_mode = FMODE_INTERNAL; - else if(!strcasecmp(mode, "kernel")) + } else if(!strcasecmp(mode, "kernel")) { forwarding_mode = FMODE_KERNEL; - else { + } else { logger(LOG_ERR, "Invalid forwarding mode!"); free(mode); return false; } + free(mode); } - choice = true; + choice = !(myself->options & OPTION_TCPONLY); get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice); - if(choice) + + if(choice) { myself->options |= OPTION_PMTU_DISCOVERY; + } choice = true; get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice); - if(choice) + + if(choice) { myself->options |= OPTION_CLAMP_MSS; + } get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance); get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl); + if(get_config_string(lookup_config(config_tree, "Broadcast"), &mode)) { - if(!strcasecmp(mode, "no")) + if(!strcasecmp(mode, "no")) { broadcast_mode = BMODE_NONE; - else if(!strcasecmp(mode, "yes") || !strcasecmp(mode, "mst")) + } else if(!strcasecmp(mode, "yes") || !strcasecmp(mode, "mst")) { broadcast_mode = BMODE_MST; - else if(!strcasecmp(mode, "direct")) + } else if(!strcasecmp(mode, "direct")) { broadcast_mode = BMODE_DIRECT; - else { + } else { logger(LOG_ERR, "Invalid broadcast mode!"); free(mode); return false; } + free(mode); } #if !defined(SOL_IP) || !defined(IP_TOS) - if(priorityinheritance) + + if(priorityinheritance) { logger(LOG_WARNING, "%s not supported on this platform for IPv4 connection", "PriorityInheritance"); + } + #endif #if !defined(IPPROTO_IPV6) || !defined(IPV6_TCLASS) - if(priorityinheritance) + + if(priorityinheritance) { logger(LOG_WARNING, "%s not supported on this platform for IPv6 connection", "PriorityInheritance"); + } + #endif - if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire)) + if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire)) { macexpire = 600; + } if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) { if(maxtimeout <= 0) { logger(LOG_ERR, "Bogus maximum timeout!"); return false; } - } else + } else { maxtimeout = 900; + } if(get_config_int(lookup_config(config_tree, "MinTimeout"), &mintimeout)) { - if(mintimeout < 0) { - logger(LOG_ERR, "Bogus minimum timeout!"); - return false; - } - if(mintimeout > maxtimeout) { - logger(LOG_WARNING, "Minimum timeout (%d s) cannot be larger than maximum timeout (%d s). Correcting !", mintimeout, maxtimeout ); - mintimeout=maxtimeout; - } - } else - mintimeout = 0; + if(mintimeout < 0) { + logger(LOG_ERR, "Bogus minimum timeout!"); + return false; + } + + if(mintimeout > maxtimeout) { + logger(LOG_WARNING, "Minimum timeout (%d s) cannot be larger than maximum timeout (%d s). Correcting !", mintimeout, maxtimeout); + mintimeout = maxtimeout; + } + } else { + mintimeout = 0; + } if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) { if(udp_rcvbuf <= 0) { @@ -614,21 +683,23 @@ static bool setup_myself(void) { logger(LOG_ERR, "ReplayWindow cannot be negative!"); return false; } + replaywin = (unsigned)replaywin_int; } if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) { - if(!strcasecmp(afname, "IPv4")) + if(!strcasecmp(afname, "IPv4")) { addressfamily = AF_INET; - else if(!strcasecmp(afname, "IPv6")) + } else if(!strcasecmp(afname, "IPv6")) { addressfamily = AF_INET6; - else if(!strcasecmp(afname, "any")) + } else if(!strcasecmp(afname, "any")) { addressfamily = AF_UNSPEC; - else { + } else { logger(LOG_ERR, "Invalid address family!"); free(afname); return false; } + free(afname); } @@ -648,14 +719,17 @@ static bool setup_myself(void) { return false; } } - free(cipher); - } else - myself->incipher = EVP_aes_256_cbc(); - if(myself->incipher) + free(cipher); + } else { + myself->incipher = EVP_aes_256_cbc(); + } + + if(myself->incipher) { myself->inkeylength = EVP_CIPHER_key_length(myself->incipher) + EVP_CIPHER_iv_length(myself->incipher); - else + } else { myself->inkeylength = 1; + } /* We need to use a stream mode for the meta protocol. Use AES for this, but try to match the key size with the one from the cipher selected @@ -666,18 +740,21 @@ static bool setup_myself(void) { */ int keylen = myself->incipher ? EVP_CIPHER_key_length(myself->incipher) : 0; - if(keylen <= 16) - myself->connection->outcipher = EVP_aes_128_cfb(); - else if(keylen <= 24) - myself->connection->outcipher = EVP_aes_192_cfb(); - else - myself->connection->outcipher = EVP_aes_256_cfb(); - if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime)) + if(keylen <= 16) { + myself->connection->outcipher = EVP_aes_128_cfb(); + } else if(keylen <= 24) { + myself->connection->outcipher = EVP_aes_192_cfb(); + } else { + myself->connection->outcipher = EVP_aes_256_cfb(); + } + + if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime)) { keylifetime = 3600; + } keyexpires = now + keylifetime; - + /* Check if we want to use message authentication codes... */ if(get_config_string(lookup_config(config_tree, "Digest"), &digest)) { @@ -694,8 +771,9 @@ static bool setup_myself(void) { } free(digest); - } else + } else { myself->indigest = EVP_sha256(); + } myself->connection->outdigest = EVP_sha256(); @@ -709,8 +787,9 @@ static bool setup_myself(void) { return false; } } - } else + } else { myself->inmaclength = 4; + } myself->connection->outmaclength = 0; @@ -721,8 +800,9 @@ static bool setup_myself(void) { logger(LOG_ERR, "Bogus compression level!"); return false; } - } else + } else { myself->incompression = 0; + } myself->connection->outcompression = 0; @@ -735,33 +815,41 @@ static bool setup_myself(void) { graph(); - if(strictsubnets) + if(strictsubnets) { load_all_subnets(); + } /* Open device */ devops = os_devops; if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { - if(!strcasecmp(type, "dummy")) + if(!strcasecmp(type, "dummy")) { devops = dummy_devops; - else if(!strcasecmp(type, "raw_socket")) + } else if(!strcasecmp(type, "raw_socket")) { devops = raw_socket_devops; - else if(!strcasecmp(type, "multicast")) + } else if(!strcasecmp(type, "multicast")) { devops = multicast_devops; + } + #ifdef ENABLE_UML - else if(!strcasecmp(type, "uml")) + else if(!strcasecmp(type, "uml")) { devops = uml_devops; + } + #endif #ifdef ENABLE_VDE - else if(!strcasecmp(type, "vde")) + else if(!strcasecmp(type, "vde")) { devops = vde_devops; + } + #endif free(type); } - if(!devops.setup()) + if(!devops.setup()) { return false; + } /* Run tinc-up script to further initialize the tap interface */ xasprintf(&envp[0], "NETNAME=%s", netname ? : ""); @@ -777,8 +865,9 @@ static bool setup_myself(void) { #endif execute_script("tinc-up", envp); - for(i = 0; i < 4; i++) + for(i = 0; i < 4; i++) { free(envp[i]); + } /* Run subnet-up scripts for our own subnets */ @@ -801,7 +890,8 @@ static bool setup_myself(void) { } for(i = 0; i < listen_sockets; i++) { - salen = sizeof sa; + salen = sizeof(sa); + if(getsockname(i + 3, &sa.sa, &salen) < 0) { logger(LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno)); return false; @@ -810,12 +900,14 @@ static bool setup_myself(void) { listen_socket[i].tcp = i + 3; #ifdef FD_CLOEXEC - fcntl(i + 3, F_SETFD, FD_CLOEXEC); + fcntl(i + 3, F_SETFD, FD_CLOEXEC); #endif listen_socket[i].udp = setup_vpn_in_socket(&sa); - if(listen_socket[i].udp < 0) + + if(listen_socket[i].udp < 0) { return false; + } ifdebug(CONNECTIONS) { hostname = sockaddr2hostname(&sa); @@ -831,20 +923,24 @@ static bool setup_myself(void) { do { get_config_string(cfg, &address); - if(cfg) + + if(cfg) { cfg = lookup_config_next(config_tree, cfg); + } char *port = myport; if(address) { char *space = strchr(address, ' '); + if(space) { *space++ = 0; port = space; } - if(!strcmp(address, "*")) + if(!strcmp(address, "*")) { *address = 0; + } } hint.ai_family = addressfamily; @@ -861,7 +957,7 @@ static bool setup_myself(void) { if(err || !ai) { logger(LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", - gai_strerror(err)); + gai_strerror(err)); return false; } @@ -872,16 +968,18 @@ static bool setup_myself(void) { } listen_socket[listen_sockets].tcp = - setup_listen_socket((sockaddr_t *) aip->ai_addr); + setup_listen_socket((sockaddr_t *) aip->ai_addr); - if(listen_socket[listen_sockets].tcp < 0) + if(listen_socket[listen_sockets].tcp < 0) { continue; + } listen_socket[listen_sockets].udp = - setup_vpn_in_socket((sockaddr_t *) aip->ai_addr); + setup_vpn_in_socket((sockaddr_t *) aip->ai_addr); - if(listen_socket[listen_sockets].udp < 0) + if(listen_socket[listen_sockets].udp < 0) { continue; + } ifdebug(CONNECTIONS) { hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr); @@ -906,12 +1004,15 @@ static bool setup_myself(void) { if(!port_specified) { sockaddr_t sa; - socklen_t salen = sizeof sa; + socklen_t salen = sizeof(sa); + if(!getsockname(listen_socket[0].udp, &sa.sa, &salen)) { free(myport); sockaddr2str(&sa, NULL, &myport); - if(!myport) + + if(!myport) { myport = xstrdup("655"); + } } } @@ -938,19 +1039,25 @@ bool setup_network(void) { if(pinginterval < 1) { pinginterval = 86400; } - } else + } else { pinginterval = 60; + } - if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout)) + if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout)) { pingtimeout = 5; - if(pingtimeout < 1 || pingtimeout > pinginterval) + } + + if(pingtimeout < 1 || pingtimeout > pinginterval) { pingtimeout = pinginterval; + } - if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize)) + if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize)) { maxoutbufsize = 10 * MTU; + } - if(!setup_myself()) + if(!setup_myself()) { return false; + } return true; } @@ -961,7 +1068,7 @@ bool setup_network(void) { void close_network_connections(void) { avl_node_t *node, *next; connection_t *c; - char *envp[5] = {NULL}; + char *envp[5] = {}; int i; for(node = connection_tree->head; node; node = next) { @@ -974,8 +1081,9 @@ void close_network_connections(void) { for(list_node_t *node = outgoing_list->head; node; node = node->next) { outgoing_t *outgoing = node->data; - if(outgoing->event) + if(outgoing->event) { event_del(outgoing->event); + } } list_delete_list(outgoing_list); @@ -1005,10 +1113,13 @@ void close_network_connections(void) { execute_script("tinc-down", envp); - if(myport) free(myport); + if(myport) { + free(myport); + } - for(i = 0; i < 4; i++) + for(i = 0; i < 4; i++) { free(envp[i]); + } devops.close(); diff --git a/src/net_socket.c b/src/net_socket.c index 9d5837f..6b3c7d2 100644 --- a/src/net_socket.c +++ b/src/net_socket.c @@ -62,12 +62,14 @@ static void configure_tcp(connection_t *c) { if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) { logger(LOG_ERR, "fcntl for %s: %s", c->hostname, strerror(errno)); } + #elif defined(WIN32) unsigned long arg = 1; if(ioctlsocket(c->socket, FIONBIO, &arg) != 0) { logger(LOG_ERR, "ioctlsocket for %s: %s", c->hostname, sockstrerror(sockerrno)); } + #endif #if defined(SOL_TCP) && defined(TCP_NODELAY) @@ -94,8 +96,9 @@ static bool bind_to_interface(int sd) { int status; #endif /* defined(SOL_SOCKET) && defined(SO_BINDTODEVICE) */ - if(!get_config_string(lookup_config (config_tree, "BindToInterface"), &iface)) + if(!get_config_string(lookup_config(config_tree, "BindToInterface"), &iface)) { return true; + } #if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE) memset(&ifr, 0, sizeof(ifr)); @@ -104,6 +107,7 @@ static bool bind_to_interface(int sd) { free(iface); status = setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr)); + if(status) { logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_ifrn.ifrn_name, strerror(errno)); return false; @@ -139,8 +143,11 @@ int setup_listen_socket(const sockaddr_t *sa) { setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof(option)); #if defined(SOL_IPV6) && defined(IPV6_V6ONLY) - if(sa->sa.sa_family == AF_INET6) - setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option); + + if(sa->sa.sa_family == AF_INET6) { + setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option)); + } + #endif if(get_config_string(lookup_config(config_tree, "BindToInterface"), &iface)) { @@ -203,13 +210,14 @@ int setup_vpn_in_socket(const sockaddr_t *sa) { if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) { closesocket(nfd); logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", - strerror(errno)); + strerror(errno)); return -1; } } #elif defined(WIN32) { unsigned long arg = 1; + if(ioctlsocket(nfd, FIONBIO, &arg) != 0) { closesocket(nfd); logger(LOG_ERR, "Call to `%s' failed: %s", "ioctlsocket", sockstrerror(sockerrno)); @@ -222,15 +230,20 @@ int setup_vpn_in_socket(const sockaddr_t *sa) { setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof(option)); setsockopt(nfd, SOL_SOCKET, SO_BROADCAST, (void *)&option, sizeof(option)); - if(udp_rcvbuf && setsockopt(nfd, SOL_SOCKET, SO_RCVBUF, (void *)&udp_rcvbuf, sizeof(udp_rcvbuf))) + if(udp_rcvbuf && setsockopt(nfd, SOL_SOCKET, SO_RCVBUF, (void *)&udp_rcvbuf, sizeof(udp_rcvbuf))) { logger(LOG_WARNING, "Can't set UDP SO_RCVBUF to %i: %s", udp_rcvbuf, strerror(errno)); + } - if(udp_sndbuf && setsockopt(nfd, SOL_SOCKET, SO_SNDBUF, (void *)&udp_sndbuf, sizeof(udp_sndbuf))) + if(udp_sndbuf && setsockopt(nfd, SOL_SOCKET, SO_SNDBUF, (void *)&udp_sndbuf, sizeof(udp_sndbuf))) { logger(LOG_WARNING, "Can't set UDP SO_SNDBUF to %i: %s", udp_sndbuf, strerror(errno)); + } #if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY) - if(sa->sa.sa_family == AF_INET6) - setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option); + + if(sa->sa.sa_family == AF_INET6) { + setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option)); + } + #endif #if defined(IP_DONTFRAG) && !defined(IP_DONTFRAGMENT) @@ -238,30 +251,38 @@ int setup_vpn_in_socket(const sockaddr_t *sa) { #endif #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) + if(myself->options & OPTION_PMTU_DISCOVERY) { option = IP_PMTUDISC_DO; setsockopt(nfd, SOL_IP, IP_MTU_DISCOVER, (void *)&option, sizeof(option)); } + #elif defined(IPPROTO_IP) && defined(IP_DONTFRAGMENT) + if(myself->options & OPTION_PMTU_DISCOVERY) { option = 1; setsockopt(nfd, IPPROTO_IP, IP_DONTFRAGMENT, (void *)&option, sizeof(option)); } + #endif #if defined(SOL_IPV6) && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) + if(myself->options & OPTION_PMTU_DISCOVERY) { option = IPV6_PMTUDISC_DO; setsockopt(nfd, SOL_IPV6, IPV6_MTU_DISCOVER, (void *)&option, sizeof(option)); } + #elif defined(IPPROTO_IPV6) && defined(IPV6_DONTFRAG) + if(myself->options & OPTION_PMTU_DISCOVERY) { option = 1; setsockopt(nfd, IPPROTO_IPV6, IPV6_DONTFRAG, (void *)&option, sizeof(option)); } + #endif - if (!bind_to_interface(nfd)) { + if(!bind_to_interface(nfd)) { closesocket(nfd); return -1; } @@ -280,14 +301,18 @@ int setup_vpn_in_socket(const sockaddr_t *sa) { void retry_outgoing(outgoing_t *outgoing) { outgoing->timeout += 5; - if(outgoing->timeout < mintimeout) + if(outgoing->timeout < mintimeout) { outgoing->timeout = mintimeout; + } - if(outgoing->timeout > maxtimeout) + if(outgoing->timeout > maxtimeout) { outgoing->timeout = maxtimeout; + } - if(outgoing->event) + if(outgoing->event) { event_del(outgoing->event); + } + outgoing->event = new_event(); outgoing->event->handler = (event_handler_t) setup_outgoing_connection; outgoing->event->time = now + outgoing->timeout; @@ -295,8 +320,8 @@ void retry_outgoing(outgoing_t *outgoing) { event_add(outgoing->event); ifdebug(CONNECTIONS) logger(LOG_NOTICE, - "Trying to re-establish outgoing connection in %d seconds", - outgoing->timeout); + "Trying to re-establish outgoing connection in %d seconds", + outgoing->timeout); } void finish_connecting(connection_t *c) { @@ -340,14 +365,19 @@ static void do_outgoing_pipe(connection_t *c, char *command) { setenv("REMOTEPORT", port, true); setenv("NODE", c->name, true); setenv("NAME", myself->name, true); - if(netname) + + if(netname) { setenv("NETNAME", netname, true); + } int result = system(command); - if(result < 0) + + if(result < 0) { logger(LOG_ERR, "Could not execute %s: %s\n", command, strerror(errno)); - else if(result) + } else if(result) { logger(LOG_ERR, "%s exited with non-zero status %d", command, result); + } + exit(result); #else logger(LOG_ERR, "Proxy type exec not supported on this platform!"); @@ -357,12 +387,14 @@ static void do_outgoing_pipe(connection_t *c, char *command) { static bool is_valid_host_port(const char *host, const char *port) { for(const char *p = host; *p; p++) - if(!isalnum(*p) && *p != '-' && *p != '.') + if(!isalnum(*p) && *p != '-' && *p != '.') { return false; + } for(const char *p = port; *p; p++) - if(!isalnum(*p)) + if(!isalnum(*p)) { return false; + } return true; } @@ -377,10 +409,11 @@ void do_outgoing_connection(connection_t *c) { } begin: + if(!c->outgoing->ai) { if(!c->outgoing->cfg) { ifdebug(CONNECTIONS) logger(LOG_ERR, "Could not set up a meta connection to %s", - c->name); + c->name); c->status.remove = true; retry_outgoing(c->outgoing); c->outgoing = NULL; @@ -392,19 +425,21 @@ begin: get_config_string(c->outgoing->cfg, &address); space = strchr(address, ' '); + if(space) { port = xstrdup(space + 1); *space = 0; } else { - if(!get_config_string(lookup_config(c->config_tree, "Port"), &port)) + if(!get_config_string(lookup_config(c->config_tree, "Port"), &port)) { port = xstrdup("655"); + } } c->outgoing->ai = str2addrinfo(address, port, SOCK_STREAM); // If we cannot resolve the address, maybe we are using a proxy that can? if(!c->outgoing->ai && proxytype != PROXY_NONE && is_valid_host_port(address, port)) { - memset(&c->address, 0, sizeof c->address); + memset(&c->address, 0, sizeof(c->address)); c->address.sa.sa_family = AF_UNKNOWN; c->address.unknown.address = address; c->address.unknown.port = port; @@ -416,13 +451,16 @@ begin: c->outgoing->aip = c->outgoing->ai; c->outgoing->cfg = lookup_config_next(c->config_tree, c->outgoing->cfg); - if(!c->outgoing->ai && proxytype != PROXY_NONE) + if(!c->outgoing->ai && proxytype != PROXY_NONE) { goto connect; + } } if(!c->outgoing->aip) { - if(c->outgoing->ai) + if(c->outgoing->ai) { freeaddrinfo(c->outgoing->ai); + } + c->outgoing->ai = NULL; goto begin; } @@ -431,13 +469,15 @@ begin: c->outgoing->aip = c->outgoing->aip->ai_next; connect: - if(c->hostname) + + if(c->hostname) { free(c->hostname); + } c->hostname = sockaddr2hostname(&c->address); ifdebug(CONNECTIONS) logger(LOG_INFO, "Trying to connect to %s (%s)", c->name, - c->hostname); + c->hostname); if(!proxytype) { c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP); @@ -446,8 +486,11 @@ connect: do_outgoing_pipe(c, proxyhost); } else { proxyai = str2addrinfo(proxyhost, proxyport, SOCK_STREAM); - if(!proxyai) + + if(!proxyai) { goto begin; + } + ifdebug(CONNECTIONS) logger(LOG_INFO, "Using proxy at %s port %s", proxyhost, proxyport); c->socket = socket(proxyai->ai_family, SOCK_STREAM, IPPROTO_TCP); } @@ -457,8 +500,9 @@ connect: goto begin; } - if(proxytype != PROXY_EXEC) + if(proxytype != PROXY_EXEC) { configure_tcp(c); + } #ifdef FD_CLOEXEC fcntl(c->socket, F_SETFD, FD_CLOEXEC); @@ -467,8 +511,11 @@ connect: if(proxytype != PROXY_EXEC) { #if defined(SOL_IPV6) && defined(IPV6_V6ONLY) int option = 1; - if(c->address.sa.sa_family == AF_INET6) - setsockopt(c->socket, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option); + + if(c->address.sa.sa_family == AF_INET6) { + setsockopt(c->socket, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option)); + } + #endif bind_to_interface(c->socket); @@ -488,10 +535,12 @@ connect: if(b != -1) { sockaddr_t sa = listen_socket[b].sa; - if(sa.sa.sa_family == AF_INET) + + if(sa.sa.sa_family == AF_INET) { sa.in.sin_port = 0; - else if(sa.sa.sa_family == AF_INET6) + } else if(sa.sa.sa_family == AF_INET6) { sa.in6.sin6_port = 0; + } if(bind(c->socket, &sa.sa, SALEN(sa.sa))) { char *addrstr = sockaddr2hostname(&sa); @@ -557,6 +606,7 @@ void setup_outgoing_connection(outgoing_t *outgoing) { c->outcompression = myself->connection->outcompression; init_configuration(&c->config_tree); + if(!read_connection_config(c)) { free_connection(c); outgoing->timeout = maxtimeout; @@ -626,11 +676,13 @@ bool handle_new_meta_connection(int sock) { } static void free_outgoing(outgoing_t *outgoing) { - if(outgoing->ai) + if(outgoing->ai) { freeaddrinfo(outgoing->ai); + } - if(outgoing->name) + if(outgoing->name) { free(outgoing->name); + } free(outgoing); } @@ -639,16 +691,16 @@ void try_outgoing_connections(void) { static config_t *cfg = NULL; char *name; outgoing_t *outgoing; - + outgoing_list = list_alloc((list_action_t)free_outgoing); - + for(cfg = lookup_config(config_tree, "ConnectTo"); cfg; cfg = lookup_config_next(config_tree, cfg)) { get_config_string(cfg, &name); if(!check_id(name)) { logger(LOG_ERR, - "Invalid name for outgoing connection in %s line %d", - cfg->file, cfg->line); + "Invalid name for outgoing connection in %s line %d", + cfg->file, cfg->line); free(name); continue; } diff --git a/src/netutl.c b/src/netutl.c index e473f17..3c2a77d 100644 --- a/src/netutl.c +++ b/src/netutl.c @@ -33,7 +33,7 @@ bool hostnames = false; Return NULL on failure. */ struct addrinfo *str2addrinfo(const char *address, const char *service, int socktype) { - struct addrinfo *ai = NULL, hint = {0}; + struct addrinfo *ai = NULL, hint = {}; int err; hint.ai_family = addressfamily; @@ -47,7 +47,7 @@ struct addrinfo *str2addrinfo(const char *address, const char *service, int sock if(err) { logger(LOG_WARNING, "Error looking up %s port %s: %s", address, - service, gai_strerror(err)); + service, gai_strerror(err)); return NULL; } @@ -55,7 +55,7 @@ struct addrinfo *str2addrinfo(const char *address, const char *service, int sock } sockaddr_t str2sockaddr(const char *address, const char *port) { - struct addrinfo *ai = NULL, hint = {0}; + struct addrinfo *ai = NULL, hint = {}; sockaddr_t result; int err; @@ -67,7 +67,7 @@ sockaddr_t str2sockaddr(const char *address, const char *port) { if(err || !ai) { ifdebug(SCARY_THINGS) - logger(LOG_DEBUG, "Unknown type address %s port %s", address, port); + logger(LOG_DEBUG, "Unknown type address %s port %s", address, port); result.sa.sa_family = AF_UNKNOWN; result.unknown.address = xstrdup(address); result.unknown.port = xstrdup(port); @@ -87,10 +87,14 @@ void sockaddr2str(const sockaddr_t *sa, char **addrstr, char **portstr) { int err; if(sa->sa.sa_family == AF_UNKNOWN) { - if(addrstr) + if(addrstr) { *addrstr = xstrdup(sa->unknown.address); - if(portstr) + } + + if(portstr) { *portstr = xstrdup(sa->unknown.port); + } + return; } @@ -98,19 +102,23 @@ void sockaddr2str(const sockaddr_t *sa, char **addrstr, char **portstr) { if(err) { logger(LOG_ERR, "Error while translating addresses: %s", - gai_strerror(err)); + gai_strerror(err)); abort(); } scopeid = strchr(address, '%'); - if(scopeid) - *scopeid = '\0'; /* Descope. */ + if(scopeid) { + *scopeid = '\0'; /* Descope. */ + } - if(addrstr) + if(addrstr) { *addrstr = xstrdup(address); - if(portstr) + } + + if(portstr) { *portstr = xstrdup(port); + } } char *sockaddr2hostname(const sockaddr_t *sa) { @@ -125,10 +133,11 @@ char *sockaddr2hostname(const sockaddr_t *sa) { } err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), - hostnames ? 0 : (NI_NUMERICHOST | NI_NUMERICSERV)); + hostnames ? 0 : (NI_NUMERICHOST | NI_NUMERICSERV)); + if(err) { logger(LOG_ERR, "Error while looking up hostname: %s", - gai_strerror(err)); + gai_strerror(err)); } xasprintf(&str, "%s port %s", address, port); @@ -141,26 +150,27 @@ int sockaddrcmp_noport(const sockaddr_t *a, const sockaddr_t *b) { result = a->sa.sa_family - b->sa.sa_family; - if(result) + if(result) { return result; + } - switch (a->sa.sa_family) { - case AF_UNSPEC: - return 0; + switch(a->sa.sa_family) { + case AF_UNSPEC: + return 0; - case AF_UNKNOWN: - return strcmp(a->unknown.address, b->unknown.address); + case AF_UNKNOWN: + return strcmp(a->unknown.address, b->unknown.address); - case AF_INET: - return memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr)); + case AF_INET: + return memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr)); - case AF_INET6: - return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)); + case AF_INET6: + return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)); - default: - logger(LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", - a->sa.sa_family); - abort(); + default: + logger(LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", + a->sa.sa_family); + abort(); } } @@ -169,41 +179,45 @@ int sockaddrcmp(const sockaddr_t *a, const sockaddr_t *b) { result = a->sa.sa_family - b->sa.sa_family; - if(result) + if(result) { return result; + } - switch (a->sa.sa_family) { - case AF_UNSPEC: - return 0; + switch(a->sa.sa_family) { + case AF_UNSPEC: + return 0; - case AF_UNKNOWN: - result = strcmp(a->unknown.address, b->unknown.address); + case AF_UNKNOWN: + result = strcmp(a->unknown.address, b->unknown.address); - if(result) - return result; + if(result) { + return result; + } - return strcmp(a->unknown.port, b->unknown.port); + return strcmp(a->unknown.port, b->unknown.port); - case AF_INET: - result = memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr)); + case AF_INET: + result = memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr)); - if(result) - return result; + if(result) { + return result; + } - return memcmp(&a->in.sin_port, &b->in.sin_port, sizeof(a->in.sin_port)); + return memcmp(&a->in.sin_port, &b->in.sin_port, sizeof(a->in.sin_port)); - case AF_INET6: - result = memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)); + case AF_INET6: + result = memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)); - if(result) - return result; + if(result) { + return result; + } - return memcmp(&a->in6.sin6_port, &b->in6.sin6_port, sizeof(a->in6.sin6_port)); + return memcmp(&a->in6.sin6_port, &b->in6.sin6_port, sizeof(a->in6.sin6_port)); - default: - logger(LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", - a->sa.sa_family); - abort(); + default: + logger(LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", + a->sa.sa_family); + abort(); } } @@ -223,7 +237,7 @@ void sockaddrfree(sockaddr_t *a) { free(a->unknown.port); } } - + void sockaddrunmap(sockaddr_t *sa) { if(sa->sa.sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sa->in6.sin6_addr)) { sa->in.sin_addr.s_addr = ((uint32_t *) & sa->in6.sin6_addr)[3]; @@ -233,20 +247,26 @@ void sockaddrunmap(sockaddr_t *sa) { void sockaddr_setport(sockaddr_t *sa, const char *port) { uint16_t portnum = htons(atoi(port)); - if(!portnum) + + if(!portnum) { return; + } + switch(sa->sa.sa_family) { - case AF_INET: - sa->in.sin_port = portnum; - break; - case AF_INET6: - sa->in6.sin6_port = portnum; - break; - case AF_UNKNOWN: - free(sa->unknown.port); - sa->unknown.port = xstrdup(port); - default: - return; + case AF_INET: + sa->in.sin_port = portnum; + break; + + case AF_INET6: + sa->in6.sin6_port = portnum; + break; + + case AF_UNKNOWN: + free(sa->unknown.port); + sa->unknown.port = xstrdup(port); + + default: + return; } } @@ -259,13 +279,15 @@ int maskcmp(const void *va, const void *vb, int masklen) { for(m = masklen, i = 0; m >= 8; m -= 8, i++) { result = a[i] - b[i]; - if(result) + + if(result) { return result; + } } if(m) return (a[i] & (0x100 - (1 << (8 - m)))) - - (b[i] & (0x100 - (1 << (8 - m)))); + (b[i] & (0x100 - (1 << (8 - m)))); return 0; } @@ -277,11 +299,13 @@ void mask(void *va, int masklen, int len) { i = masklen / 8; masklen %= 8; - if(masklen) + if(masklen) { a[i++] &= (0x100 - (1 << (8 - masklen))); + } - for(; i < len; i++) + for(; i < len; i++) { a[i] = 0; + } } void maskcpy(void *va, const void *vb, int masklen, int len) { @@ -289,16 +313,18 @@ void maskcpy(void *va, const void *vb, int masklen, int len) { char *a = va; const char *b = vb; - for(m = masklen, i = 0; m >= 8; m -= 8, i++) + for(m = masklen, i = 0; m >= 8; m -= 8, i++) { a[i] = b[i]; + } if(m) { a[i] = b[i] & (0x100 - (1 << (8 - m))); i++; } - for(; i < len; i++) + for(; i < len; i++) { a[i] = 0; + } } bool maskcheck(const void *va, int masklen, int len) { @@ -308,12 +334,14 @@ bool maskcheck(const void *va, int masklen, int len) { i = masklen / 8; masklen %= 8; - if(masklen && a[i++] & (0xff >> masklen)) + if(masklen && a[i++] & (0xff >> masklen)) { return false; + } for(; i < len; i++) - if(a[i] != 0) + if(a[i] != 0) { return false; + } return true; } diff --git a/src/netutl.h b/src/netutl.h index bab6717..cc3ccab 100644 --- a/src/netutl.h +++ b/src/netutl.h @@ -1,3 +1,6 @@ +#ifndef TINC_NETUTL_H +#define TINC_NETUTL_H + /* netutl.h -- header file for netutl.c Copyright (C) 1998-2005 Ivo Timmermans @@ -18,26 +21,23 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_NETUTL_H__ -#define __TINC_NETUTL_H__ - #include "net.h" extern bool hostnames; -extern struct addrinfo *str2addrinfo(const char *, const char *, int); -extern sockaddr_t str2sockaddr(const char *, const char *); -extern void sockaddr2str(const sockaddr_t *, char **, char **); -extern char *sockaddr2hostname(const sockaddr_t *); -extern int sockaddrcmp(const sockaddr_t *, const sockaddr_t *); -extern int sockaddrcmp_noport(const sockaddr_t *, const sockaddr_t *); -extern void sockaddrunmap(sockaddr_t *); -extern void sockaddrfree(sockaddr_t *); -extern void sockaddrcpy(sockaddr_t *, const sockaddr_t *); -extern void sockaddr_setport(sockaddr_t *, const char *); -extern int maskcmp(const void *, const void *, int); -extern void maskcpy(void *, const void *, int, int); -extern void mask(void *, int, int); -extern bool maskcheck(const void *, int, int); +extern struct addrinfo *str2addrinfo(const char *address, const char *service, int socktype); +extern sockaddr_t str2sockaddr(const char *address, const char *port); +extern void sockaddr2str(const sockaddr_t *sa, char **addrstr, char **portstr); +extern char *sockaddr2hostname(const sockaddr_t *sa); +extern int sockaddrcmp(const sockaddr_t *a, const sockaddr_t *b); +extern int sockaddrcmp_noport(const sockaddr_t *a, const sockaddr_t *b); +extern void sockaddrunmap(sockaddr_t *sa); +extern void sockaddrfree(sockaddr_t *sa); +extern void sockaddrcpy(sockaddr_t *dest, const sockaddr_t *src); +extern void sockaddr_setport(sockaddr_t *sa, const char *port); +extern int maskcmp(const void *a, const void *b, int masklen); +extern void maskcpy(void *dest, const void *src, int masklen, int len); +extern void mask(void *mask, int masklen, int len); +extern bool maskcheck(const void *mask, int masklen, int len); -#endif /* __TINC_NETUTL_H__ */ +#endif diff --git a/src/node.c b/src/node.c index 19f3730..12bc38f 100644 --- a/src/node.c +++ b/src/node.c @@ -28,8 +28,8 @@ #include "utils.h" #include "xalloc.h" -avl_tree_t *node_tree; /* Known nodes, sorted by name */ -avl_tree_t *node_udp_tree; /* Known nodes, sorted by address and port */ +avl_tree_t *node_tree; /* Known nodes, sorted by name */ +avl_tree_t *node_udp_tree; /* Known nodes, sorted by address and port */ node_t *myself; @@ -38,7 +38,7 @@ static int node_compare(const node_t *a, const node_t *b) { } static int node_udp_compare(const node_t *a, const node_t *b) { - return sockaddrcmp(&a->address, &b->address); + return sockaddrcmp(&a->address, &b->address); } void init_nodes(void) { @@ -54,13 +54,19 @@ void exit_nodes(void) { node_t *new_node(void) { node_t *n = xmalloc_and_zero(sizeof(*n)); - if(replaywin) n->late = xmalloc_and_zero(replaywin); + if(replaywin) { + n->late = xmalloc_and_zero(replaywin); + } + n->subnet_tree = new_subnet_tree(); n->edge_tree = new_edge_tree(); n->inctx = EVP_CIPHER_CTX_new(); n->outctx = EVP_CIPHER_CTX_new(); - if(!n->inctx || !n->outctx) + + if(!n->inctx || !n->outctx) { abort(); + } + n->mtu = MTU; n->maxmtu = MTU; @@ -68,34 +74,42 @@ node_t *new_node(void) { } void free_node(node_t *n) { - if(n->inkey) + if(n->inkey) { free(n->inkey); + } - if(n->outkey) + if(n->outkey) { free(n->outkey); + } - if(n->subnet_tree) + if(n->subnet_tree) { free_subnet_tree(n->subnet_tree); + } - if(n->edge_tree) + if(n->edge_tree) { free_edge_tree(n->edge_tree); + } sockaddrfree(&n->address); EVP_CIPHER_CTX_free(n->outctx); EVP_CIPHER_CTX_free(n->inctx); - if(n->mtuevent) + if(n->mtuevent) { event_del(n->mtuevent); - - if(n->hostname) + } + + if(n->hostname) { free(n->hostname); + } - if(n->name) + if(n->name) { free(n->name); + } - if(n->late) + if(n->late) { free(n->late); + } free(n); } @@ -126,7 +140,7 @@ void node_del(node_t *n) { } node_t *lookup_node(char *name) { - node_t n = {NULL}; + node_t n = {}; n.name = name; @@ -134,7 +148,7 @@ node_t *lookup_node(char *name) { } node_t *lookup_node_udp(const sockaddr_t *sa) { - node_t n = {NULL}; + node_t n = {}; n.address = *sa; n.name = NULL; @@ -150,8 +164,9 @@ void update_node_udp(node_t *n, const sockaddr_t *sa) { avl_delete(node_udp_tree, n); - if(n->hostname) + if(n->hostname) { free(n->hostname); + } if(sa) { n->address = *sa; @@ -159,7 +174,7 @@ void update_node_udp(node_t *n, const sockaddr_t *sa) { avl_insert(node_udp_tree, n); ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname); } else { - memset(&n->address, 0, sizeof n->address); + memset(&n->address, 0, sizeof(n->address)); n->hostname = NULL; ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s cleared", n->name); } @@ -174,10 +189,10 @@ void dump_nodes(void) { for(node = node_tree->head; node; node = node->next) { n = node->data; logger(LOG_DEBUG, " %s at %s cipher %d digest %d maclength %d compression %d options %x status %04x nexthop %s via %s pmtu %d (min %d max %d)", - n->name, n->hostname, n->outcipher ? EVP_CIPHER_nid(n->outcipher) : 0, - n->outdigest ? EVP_MD_type(n->outdigest) : 0, n->outmaclength, n->outcompression, - n->options, bitfield_to_int(&n->status, sizeof n->status), n->nexthop ? n->nexthop->name : "-", - n->via ? n->via->name : "-", n->mtu, n->minmtu, n->maxmtu); + n->name, n->hostname, n->outcipher ? EVP_CIPHER_nid(n->outcipher) : 0, + n->outdigest ? EVP_MD_type(n->outdigest) : 0, n->outmaclength, n->outcompression, + n->options, bitfield_to_int(&n->status, sizeof(n->status)), n->nexthop ? n->nexthop->name : "-", + n->via ? n->via->name : "-", n->mtu, n->minmtu, n->maxmtu); } logger(LOG_DEBUG, "End of nodes."); diff --git a/src/node.h b/src/node.h index 69ed12f..b360fe5 100644 --- a/src/node.h +++ b/src/node.h @@ -1,3 +1,6 @@ +#ifndef TINC_NODE_H +#define TINC_NODE_H + /* node.h -- header for node.c Copyright (C) 2001-2016 Guus Sliepen , @@ -18,74 +21,71 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_NODE_H__ -#define __TINC_NODE_H__ - #include "avl_tree.h" #include "connection.h" #include "event.h" #include "subnet.h" typedef struct node_status_t { - unsigned int unused_active:1; /* 1 if active (not used for nodes) */ - unsigned int validkey:1; /* 1 if we currently have a valid key for him */ - unsigned int unused_waitingforkey:1; /* 1 if we already sent out a request */ - unsigned int visited:1; /* 1 if this node has been visited by one of the graph algorithms */ - unsigned int reachable:1; /* 1 if this node is reachable in the graph */ - unsigned int indirect:1; /* 1 if this node is not directly reachable by us */ - unsigned int unused:26; + unsigned int unused_active: 1; /* 1 if active (not used for nodes) */ + unsigned int validkey: 1; /* 1 if we currently have a valid key for him */ + unsigned int unused_waitingforkey: 1; /* 1 if we already sent out a request */ + unsigned int visited: 1; /* 1 if this node has been visited by one of the graph algorithms */ + unsigned int reachable: 1; /* 1 if this node is reachable in the graph */ + unsigned int indirect: 1; /* 1 if this node is not directly reachable by us */ + unsigned int unused: 26; } node_status_t; typedef struct node_t { - char *name; /* name of this node */ - uint32_t options; /* options turned on for this node */ + char *name; /* name of this node */ + uint32_t options; /* options turned on for this node */ - int sock; /* Socket to use for outgoing UDP packets */ - sockaddr_t address; /* his real (internet) ip to send UDP packets to */ - char *hostname; /* the hostname of its real ip */ + int sock; /* Socket to use for outgoing UDP packets */ + sockaddr_t address; /* his real (internet) ip to send UDP packets to */ + char *hostname; /* the hostname of its real ip */ node_status_t status; time_t last_req_key; - const EVP_CIPHER *incipher; /* Cipher type for UDP packets received from him */ - char *inkey; /* Cipher key and iv */ - int inkeylength; /* Cipher key and iv length */ - EVP_CIPHER_CTX *inctx; /* Cipher context */ - - const EVP_CIPHER *outcipher; /* Cipher type for UDP packets sent to him*/ - char *outkey; /* Cipher key and iv */ - int outkeylength; /* Cipher key and iv length */ - EVP_CIPHER_CTX *outctx; /* Cipher context */ - - const EVP_MD *indigest; /* Digest type for MAC of packets received from him */ - int inmaclength; /* Length of MAC */ + const EVP_CIPHER *incipher; /* Cipher type for UDP packets received from him */ + char *inkey; /* Cipher key and iv */ + int inkeylength; /* Cipher key and iv length */ + EVP_CIPHER_CTX *inctx; /* Cipher context */ - const EVP_MD *outdigest; /* Digest type for MAC of packets sent to him*/ - int outmaclength; /* Length of MAC */ + const EVP_CIPHER *outcipher; /* Cipher type for UDP packets sent to him*/ + char *outkey; /* Cipher key and iv */ + int outkeylength; /* Cipher key and iv length */ + EVP_CIPHER_CTX *outctx; /* Cipher context */ - int incompression; /* Compressionlevel, 0 = no compression */ - int outcompression; /* Compressionlevel, 0 = no compression */ + const EVP_MD *indigest; /* Digest type for MAC of packets received from him */ + int inmaclength; /* Length of MAC */ - struct node_t *nexthop; /* nearest node from us to him */ - struct edge_t *prevedge; /* nearest node from him to us */ - struct node_t *via; /* next hop for UDP packets */ + const EVP_MD *outdigest; /* Digest type for MAC of packets sent to him*/ + int outmaclength; /* Length of MAC */ - avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */ + int incompression; /* Compressionlevel, 0 = no compression */ + int outcompression; /* Compressionlevel, 0 = no compression */ - avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */ + struct node_t *nexthop; /* nearest node from us to him */ + struct edge_t *prevedge; /* nearest node from him to us */ + struct node_t *via; /* next hop for UDP packets */ - struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */ + avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */ - uint32_t sent_seqno; /* Sequence number last sent to this node */ - uint32_t received_seqno; /* Sequence number last received from this node */ - uint32_t farfuture; /* Packets in a row that have arrived from the far future */ - unsigned char* late; /* Bitfield marking late packets */ + avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */ - length_t mtu; /* Maximum size of packets to send to this node */ - length_t minmtu; /* Probed minimum MTU */ - length_t maxmtu; /* Probed maximum MTU */ - int mtuprobes; /* Number of probes */ - event_t *mtuevent; /* Probe event */ + struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */ + + uint32_t sent_seqno; /* Sequence number last sent to this node */ + uint32_t received_seqno; /* Sequence number last received from this node */ + uint32_t farfuture; /* Packets in a row that have arrived from the far future */ + unsigned char *late; /* Bitfield marking late packets */ + + length_t mtu; /* Maximum size of packets to send to this node */ + length_t minmtu; /* Probed minimum MTU */ + length_t maxmtu; /* Probed maximum MTU */ + int mtuprobes; /* Number of probes */ + event_t *mtuevent; /* Probe event */ } node_t; extern struct node_t *myself; @@ -94,13 +94,13 @@ extern avl_tree_t *node_udp_tree; extern void init_nodes(void); extern void exit_nodes(void); -extern node_t *new_node(void) __attribute__ ((__malloc__)); -extern void free_node(node_t *); -extern void node_add(node_t *); -extern void node_del(node_t *); -extern node_t *lookup_node(char *); -extern node_t *lookup_node_udp(const sockaddr_t *); -extern void update_node_udp(node_t *, const sockaddr_t *); +extern node_t *new_node(void) __attribute__((__malloc__)); +extern void free_node(node_t *n); +extern void node_add(node_t *n); +extern void node_del(node_t *n); +extern node_t *lookup_node(char *name); +extern node_t *lookup_node_udp(const sockaddr_t *sa); +extern void update_node_udp(node_t *n, const sockaddr_t *sa); extern void dump_nodes(void); -#endif /* __TINC_NODE_H__ */ +#endif diff --git a/src/pidfile.c b/src/pidfile.c index 232c2c4..dd17267 100644 --- a/src/pidfile.c +++ b/src/pidfile.c @@ -22,7 +22,7 @@ /* left unaltered for tinc -- Ivo Timmermans */ /* * Sat Aug 19 13:24:33 MET DST 1995: Martin Schulze - * First version (v0.2) released + * First version (v0.2) released */ #include "system.h" @@ -36,17 +36,20 @@ * 0 is returned if either there's no pidfile, it's empty * or no pid can be read. */ -pid_t read_pid (const char *pidfile) -{ - FILE *f; - long pid; +pid_t read_pid(const char *pidfile) { + FILE *f; + long pid; - if (!(f=fopen(pidfile,"r"))) - return 0; - if(fscanf(f,"%20ld", &pid) != 1) - pid = 0; - fclose(f); - return (pid_t)pid; + if(!(f = fopen(pidfile, "r"))) { + return 0; + } + + if(fscanf(f, "%20ld", &pid) != 1) { + pid = 0; + } + + fclose(f); + return (pid_t)pid; } /* check_pid @@ -55,25 +58,27 @@ pid_t read_pid (const char *pidfile) * table (using /proc) to determine if the process already exists. If * so the pid is returned, otherwise 0. */ -pid_t check_pid (const char *pidfile) -{ - pid_t pid = read_pid(pidfile); +pid_t check_pid(const char *pidfile) { + pid_t pid = read_pid(pidfile); - /* Amazing ! _I_ am already holding the pid file... */ - if ((!pid) || (pid == getpid ())) - return 0; + /* Amazing ! _I_ am already holding the pid file... */ + if((!pid) || (pid == getpid())) { + return 0; + } - /* - * The 'standard' method of doing this is to try and do a 'fake' kill - * of the process. If an ESRCH error is returned the process cannot - * be found -- GW - */ - /* But... errno is usually changed only on error.. */ - errno = 0; - if (kill(pid, 0) && errno == ESRCH) - return 0; + /* + * The 'standard' method of doing this is to try and do a 'fake' kill + * of the process. If an ESRCH error is returned the process cannot + * be found -- GW + */ + /* But... errno is usually changed only on error.. */ + errno = 0; - return pid; + if(kill(pid, 0) && errno == ESRCH) { + return 0; + } + + return pid; } /* write_pid @@ -81,44 +86,49 @@ pid_t check_pid (const char *pidfile) * Writes the pid to the specified file. If that fails 0 is * returned, otherwise the pid. */ -pid_t write_pid (const char *pidfile) -{ - FILE *f; - int fd; - pid_t pid; +pid_t write_pid(const char *pidfile) { + FILE *f; + int fd; + pid_t pid; - if ((fd = open(pidfile, O_RDWR|O_CREAT, 0644)) == -1) { - return 0; - } + if((fd = open(pidfile, O_RDWR | O_CREAT, 0644)) == -1) { + return 0; + } - if ((f = fdopen(fd, "r+")) == NULL) { - close(fd); - return 0; - } - -#ifdef HAVE_FLOCK - if (flock(fd, LOCK_EX|LOCK_NB) == -1) { - fclose(f); - return 0; - } -#endif - - pid = getpid(); - if (!fprintf(f,"%ld\n", (long)pid)) { - fclose(f); - return 0; - } - fflush(f); + if((f = fdopen(fd, "r+")) == NULL) { + close(fd); + return 0; + } #ifdef HAVE_FLOCK - if (flock(fd, LOCK_UN) == -1) { - fclose(f); - return 0; - } -#endif - fclose(f); - return pid; + if(flock(fd, LOCK_EX | LOCK_NB) == -1) { + fclose(f); + return 0; + } + +#endif + + pid = getpid(); + + if(!fprintf(f, "%ld\n", (long)pid)) { + fclose(f); + return 0; + } + + fflush(f); + +#ifdef HAVE_FLOCK + + if(flock(fd, LOCK_UN) == -1) { + fclose(f); + return 0; + } + +#endif + fclose(f); + + return pid; } /* remove_pid @@ -126,8 +136,7 @@ pid_t write_pid (const char *pidfile) * Remove the the specified file. The result from unlink(2) * is returned */ -int remove_pid (const char *pidfile) -{ - return unlink (pidfile); +int remove_pid(const char *pidfile) { + return unlink(pidfile); } #endif diff --git a/src/pidfile.h b/src/pidfile.h index 590a7bc..7d71cc2 100644 --- a/src/pidfile.h +++ b/src/pidfile.h @@ -1,3 +1,6 @@ +#ifndef TINC_PIDFILE_H +#define TINC_PIDFILE_H + /* pidfile.h - interact with pidfiles Copyright (c) 1995 Martin Schulze @@ -26,7 +29,7 @@ * 0 is returned if either there's no pidfile, it's empty * or no pid can be read. */ -extern pid_t read_pid (const char *pidfile); +extern pid_t read_pid(const char *pidfile); /* check_pid * @@ -34,19 +37,21 @@ extern pid_t read_pid (const char *pidfile); * table (using /proc) to determine if the process already exists. If * so 1 is returned, otherwise 0. */ -extern pid_t check_pid (const char *pidfile); +extern pid_t check_pid(const char *pidfile); /* write_pid * * Writes the pid to the specified file. If that fails 0 is * returned, otherwise the pid. */ -extern pid_t write_pid (const char *pidfile); +extern pid_t write_pid(const char *pidfile); /* remove_pid * * Remove the the specified file. The result from unlink(2) * is returned */ -extern int remove_pid (const char *pidfile); +extern int remove_pid(const char *pidfile); +#endif + #endif diff --git a/src/process.c b/src/process.c index 807e783..13d1007 100644 --- a/src/process.c +++ b/src/process.c @@ -47,11 +47,6 @@ extern bool use_logfile; static sigset_t emptysigset; #endif -static void memory_full(int size) { - logger(LOG_ERR, "Memory exhausted (couldn't allocate %d bytes), exitting.", size); - exit(1); -} - /* Some functions the less gifted operating systems might lack... */ #ifdef HAVE_MINGW @@ -71,42 +66,47 @@ bool install_service(void) { SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"}; manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); + if(!manager) { logger(LOG_ERR, "Could not open service manager: %s", winerror(GetLastError())); return false; } if(!strchr(program_name, '\\')) { - GetCurrentDirectory(sizeof command - 1, command + 1); - strncat(command, "\\", sizeof command - strlen(command)); + GetCurrentDirectory(sizeof(command) - 1, command + 1); + strncat(command, "\\", sizeof(command) - strlen(command)); } - strncat(command, program_name, sizeof command - strlen(command)); + strncat(command, program_name, sizeof(command) - strlen(command)); - strncat(command, "\"", sizeof command - strlen(command)); + strncat(command, "\"", sizeof(command) - strlen(command)); for(argp = g_argv + 1; *argp; argp++) { space = strchr(*argp, ' '); - strncat(command, " ", sizeof command - strlen(command)); - - if(space) - strncat(command, "\"", sizeof command - strlen(command)); - - strncat(command, *argp, sizeof command - strlen(command)); + strncat(command, " ", sizeof(command) - strlen(command)); - if(space) - strncat(command, "\"", sizeof command - strlen(command)); + if(space) { + strncat(command, "\"", sizeof(command) - strlen(command)); + } + + strncat(command, *argp, sizeof(command) - strlen(command)); + + if(space) { + strncat(command, "\"", sizeof(command) - strlen(command)); + } } service = CreateService(manager, identname, identname, - SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, - command, NULL, NULL, NULL, NULL, NULL); - + SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, + command, NULL, NULL, NULL, NULL, NULL); + if(!service) { DWORD lasterror = GetLastError(); logger(LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror)); - if(lasterror != ERROR_SERVICE_EXISTS) + + if(lasterror != ERROR_SERVICE_EXISTS) { return false; + } } if(service) { @@ -116,16 +116,18 @@ bool install_service(void) { service = OpenService(manager, identname, SERVICE_ALL_ACCESS); } - if(!StartService(service, 0, NULL)) + if(!StartService(service, 0, NULL)) { logger(LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError())); - else + } else { logger(LOG_INFO, "%s service started", identname); + } return true; } bool remove_service(void) { manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); + if(!manager) { logger(LOG_ERR, "Could not open service manager: %s", winerror(GetLastError())); return false; @@ -138,10 +140,11 @@ bool remove_service(void) { return false; } - if(!ControlService(service, SERVICE_CONTROL_STOP, &status)) + if(!ControlService(service, SERVICE_CONTROL_STOP, &status)) { logger(LOG_ERR, "Could not stop %s service: %s", identname, winerror(GetLastError())); - else + } else { logger(LOG_INFO, "%s service stopped", identname); + } if(!DeleteService(service)) { logger(LOG_ERR, "Could not remove %s service: %s", identname, winerror(GetLastError())); @@ -155,61 +158,64 @@ bool remove_service(void) { DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) { switch(request) { - case SERVICE_CONTROL_INTERROGATE: - SetServiceStatus(statushandle, &status); - return NO_ERROR; - case SERVICE_CONTROL_STOP: - logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP"); - break; - case SERVICE_CONTROL_SHUTDOWN: - logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN"); - break; - default: - logger(LOG_WARNING, "Got unexpected request %d", (int)request); - return ERROR_CALL_NOT_IMPLEMENTED; + case SERVICE_CONTROL_INTERROGATE: + SetServiceStatus(statushandle, &status); + return NO_ERROR; + + case SERVICE_CONTROL_STOP: + logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP"); + break; + + case SERVICE_CONTROL_SHUTDOWN: + logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN"); + break; + + default: + logger(LOG_WARNING, "Got unexpected request %d", (int)request); + return ERROR_CALL_NOT_IMPLEMENTED; } if(running) { running = false; - status.dwWaitHint = 30000; - status.dwCurrentState = SERVICE_STOP_PENDING; + status.dwWaitHint = 30000; + status.dwCurrentState = SERVICE_STOP_PENDING; SetServiceStatus(statushandle, &status); return NO_ERROR; } else { - status.dwWaitHint = 0; - status.dwCurrentState = SERVICE_STOPPED; + status.dwWaitHint = 0; + status.dwCurrentState = SERVICE_STOPPED; SetServiceStatus(statushandle, &status); exit(1); } } -VOID WINAPI run_service(DWORD argc, LPTSTR* argv) { +VOID WINAPI run_service(DWORD argc, LPTSTR *argv) { extern int main2(int argc, char **argv); - status.dwServiceType = SERVICE_WIN32; + status.dwServiceType = SERVICE_WIN32; status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; - status.dwWin32ExitCode = 0; - status.dwServiceSpecificExitCode = 0; - status.dwCheckPoint = 0; + status.dwWin32ExitCode = 0; + status.dwServiceSpecificExitCode = 0; + status.dwCheckPoint = 0; - statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL); + statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL); - if (!statushandle) { + if(!statushandle) { logger(LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError())); } else { - status.dwWaitHint = 30000; - status.dwCurrentState = SERVICE_START_PENDING; + status.dwWaitHint = 30000; + status.dwCurrentState = SERVICE_START_PENDING; SetServiceStatus(statushandle, &status); - status.dwWaitHint = 0; + status.dwWaitHint = 0; status.dwCurrentState = SERVICE_RUNNING; SetServiceStatus(statushandle, &status); main2(argc, argv); status.dwWaitHint = 0; - status.dwCurrentState = SERVICE_STOPPED; + status.dwCurrentState = SERVICE_STOPPED; SetServiceStatus(statushandle, &status); } @@ -225,9 +231,9 @@ bool init_service(void) { if(!StartServiceCtrlDispatcher(services)) { if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) { return false; - } - else + } else { logger(LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError())); + } } return true; @@ -246,9 +252,11 @@ static bool write_pidfile(void) { if(pid) { if(netname) fprintf(stderr, "A tincd is already running for net `%s' with pid %ld.\n", - netname, (long)pid); - else + netname, (long)pid); + else { fprintf(stderr, "A tincd is already running with pid %ld.\n", (long)pid); + } + return false; } @@ -274,21 +282,24 @@ bool kill_other(int signal) { if(!pid) { if(netname) fprintf(stderr, "No other tincd is running for net `%s'.\n", - netname); - else + netname); + else { fprintf(stderr, "No other tincd is running.\n"); + } + return false; } - errno = 0; /* No error, sometimes errno is only changed on error */ + errno = 0; /* No error, sometimes errno is only changed on error */ /* ESRCH is returned when no process with that pid is found */ if(kill(pid, signal) && errno == ESRCH) { if(netname) fprintf(stderr, "The tincd for net `%s' is no longer running. ", - netname); - else + netname); + else { fprintf(stderr, "The tincd is no longer running. "); + } fprintf(stderr, "Removing stale lock file.\n"); remove_pid(pidfilename); @@ -309,8 +320,10 @@ bool detach(void) { /* First check if we can open a fresh new pidfile */ #ifndef HAVE_MINGW - if(!write_pidfile()) + + if(!write_pidfile()) { return false; + } /* If we succeeded in doing that, detach */ @@ -319,9 +332,10 @@ bool detach(void) { if(do_detach) { #ifndef HAVE_MINGW + if(daemon(0, 0)) { fprintf(stderr, "Couldn't detach from terminal: %s", - strerror(errno)); + strerror(errno)); return false; } @@ -331,18 +345,20 @@ bool detach(void) { fprintf(stderr, "Could not write pid file %s: %s\n", pidfilename, strerror(errno)); return false; } + #else - if(!statushandle) + + if(!statushandle) { exit(install_service()); + } + #endif } - openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR)); + openlogger(identname, use_logfile ? LOGMODE_FILE : (do_detach ? LOGMODE_SYSLOG : LOGMODE_STDERR)); logger(LOG_NOTICE, "tincd %s starting, debug level %d", - VERSION, debug_level); - - xalloc_fail_func = memory_full; + VERSION, debug_level); return true; } @@ -350,8 +366,11 @@ bool detach(void) { #ifdef HAVE_PUTENV void unputenv(char *p) { char *e = strchr(p, '='); - if(!e) + + if(!e) { return; + } + int len = e - p; #ifndef HAVE_UNSETENV #ifdef HAVE_MINGW @@ -368,13 +387,16 @@ void unputenv(char *p) { // We must keep what we putenv() around in memory. // To do this without memory leaks, keep things in a list and reuse if possible. static list_t list = {}; + for(list_node_t *node = list.head; node; node = node->next) { char *data = node->data; + if(!strcmp(data, var)) { putenv(data); return; } } + char *data = xstrdup(var); list_insert_tail(&list, data); putenv(data); @@ -396,13 +418,18 @@ bool execute_script(const char *name, char **envp) { #ifndef HAVE_MINGW len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name); #else - if(cfg_interpreter) + + if(cfg_interpreter) { len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name); - else + } else { len = xasprintf(&scriptname, "\"%s/%s.bat\"", confbase, name); + } + #endif - if(len < 0) + + if(len < 0) { return false; + } scriptname[len - 1] = '\0'; @@ -418,16 +445,19 @@ bool execute_script(const char *name, char **envp) { free(scriptname); len = xasprintf(&scriptname, "%s \"%s/%s\"", interpreter, confbase, name); free(interpreter); - if(len < 0) + + if(len < 0) { return false; + } } ifdebug(STATUS) logger(LOG_INFO, "Executing script %s", name); /* Set environment */ - - for(i = 0; envp[i]; i++) + + for(i = 0; envp[i]; i++) { putenv(envp[i]); + } scriptname[len - 1] = '\"'; status = system(scriptname); @@ -436,30 +466,34 @@ bool execute_script(const char *name, char **envp) { /* Unset environment */ - for(i = 0; envp[i]; i++) + for(i = 0; envp[i]; i++) { unputenv(envp[i]); + } if(status != -1) { #ifdef WEXITSTATUS - if(WIFEXITED(status)) { /* Child exited by itself */ + + if(WIFEXITED(status)) { /* Child exited by itself */ if(WEXITSTATUS(status)) { logger(LOG_ERR, "Script %s exited with non-zero status %d", - name, WEXITSTATUS(status)); + name, WEXITSTATUS(status)); return false; } - } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */ + } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */ logger(LOG_ERR, "Script %s was killed by signal %d (%s)", - name, WTERMSIG(status), strsignal(WTERMSIG(status))); + name, WTERMSIG(status), strsignal(WTERMSIG(status))); return false; - } else { /* Something strange happened */ + } else { /* Something strange happened */ logger(LOG_ERR, "Script %s terminated abnormally", name); return false; } + #endif } else { logger(LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno)); return false; } + #endif return true; } @@ -471,24 +505,30 @@ bool execute_script(const char *name, char **envp) { #ifndef HAVE_MINGW static RETSIGTYPE sigterm_handler(int a) { + (void)a; logger(LOG_NOTICE, "Got %s signal", "TERM"); - if(running) + + if(running) { running = false; - else + } else { exit(1); + } } static RETSIGTYPE sigquit_handler(int a) { + (void)a; logger(LOG_NOTICE, "Got %s signal", "QUIT"); - if(running) + + if(running) { running = false; - else + } else { exit(1); + } } static RETSIGTYPE fatal_signal_square(int a) { logger(LOG_ERR, "Got another fatal signal %d (%s): not restarting.", a, - strsignal(a)); + strsignal(a)); exit(1); } @@ -515,39 +555,44 @@ static RETSIGTYPE fatal_signal_handler(int a) { } static RETSIGTYPE sighup_handler(int a) { + (void)a; logger(LOG_NOTICE, "Got %s signal", "HUP"); sighup = true; } static RETSIGTYPE sigint_handler(int a) { + (void)a; static int saved_debug_level = -1; logger(LOG_NOTICE, "Got %s signal", "INT"); if(saved_debug_level != -1) { logger(LOG_NOTICE, "Reverting to old debug level (%d)", - saved_debug_level); + saved_debug_level); debug_level = saved_debug_level; saved_debug_level = -1; } else { logger(LOG_NOTICE, - "Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d.", - debug_level); + "Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d.", + debug_level); saved_debug_level = debug_level; debug_level = 5; } } static RETSIGTYPE sigalrm_handler(int a) { + (void)a; logger(LOG_NOTICE, "Got %s signal", "ALRM"); sigalrm = true; } static RETSIGTYPE sigusr1_handler(int a) { + (void)a; dump_connections(); } static RETSIGTYPE sigusr2_handler(int a) { + (void)a; devops.dump_stats(); dump_nodes(); dump_edges(); @@ -555,14 +600,17 @@ static RETSIGTYPE sigusr2_handler(int a) { } static RETSIGTYPE sigwinch_handler(int a) { + (void)a; do_purge = true; } static RETSIGTYPE unexpected_signal_handler(int a) { + (void)a; logger(LOG_WARNING, "Got unexpected signal %d (%s)", a, strsignal(a)); } static RETSIGTYPE ignore_signal_handler(int a) { + (void)a; ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Ignored signal %d (%s)", a, strsignal(a)); } @@ -601,25 +649,30 @@ void setup_signals(void) { /* Set a default signal handler for every signal, errors will be ignored. */ for(i = 1; i < NSIG; i++) { - if(!do_detach) + if(!do_detach) { act.sa_handler = SIG_DFL; - else + } else { act.sa_handler = unexpected_signal_handler; + } + sigaction(i, &act, NULL); } /* If we didn't detach, allow coredumps */ - if(!do_detach) + if(!do_detach) { sighandlers[3].handler = SIG_DFL; + } /* Then, for each known signal that we want to catch, assign a handler to the signal, with error checking this time. */ for(i = 0; sighandlers[i].signal; i++) { act.sa_handler = sighandlers[i].handler; + if(sigaction(sighandlers[i].signal, &act, NULL) < 0) fprintf(stderr, "Installing signal handler for signal %d (%s) failed: %s\n", - sighandlers[i].signal, strsignal(sighandlers[i].signal), - strerror(errno)); + sighandlers[i].signal, strsignal(sighandlers[i].signal), + strerror(errno)); } + #endif } diff --git a/src/process.h b/src/process.h index 8d2d562..e775ac3 100644 --- a/src/process.h +++ b/src/process.h @@ -1,3 +1,6 @@ +#ifndef TINC_PROCESS_H +#define TINC_PROCESS_H + /* process.h -- header file for process.c Copyright (C) 1999-2005 Ivo Timmermans, @@ -18,20 +21,17 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_PROCESS_H__ -#define __TINC_PROCESS_H__ - extern bool do_detach; extern bool sighup; extern bool sigalrm; extern void setup_signals(void); -extern bool execute_script(const char *, char **); +extern bool execute_script(const char *name, char **envp); extern bool detach(void); -extern bool kill_other(int); +extern bool kill_other(int signal); #ifdef HAVE_MINGW extern bool init_service(void); #endif -#endif /* __TINC_PROCESS_H__ */ +#endif diff --git a/src/protocol.c b/src/protocol.c index eadca13..d04f9ef 100644 --- a/src/protocol.c +++ b/src/protocol.c @@ -34,30 +34,31 @@ bool strictsubnets = false; /* Jumptable for the request handlers */ static bool (*request_handlers[])(connection_t *) = { - id_h, metakey_h, challenge_h, chal_reply_h, ack_h, - status_h, error_h, termreq_h, - ping_h, pong_h, - add_subnet_h, del_subnet_h, - add_edge_h, del_edge_h, - key_changed_h, req_key_h, ans_key_h, tcppacket_h, + id_h, metakey_h, challenge_h, chal_reply_h, ack_h, + NULL, NULL, NULL, + ping_h, pong_h, + add_subnet_h, del_subnet_h, + add_edge_h, del_edge_h, + key_changed_h, req_key_h, ans_key_h, tcppacket_h, }; /* Request names */ static char (*request_name[]) = { - "ID", "METAKEY", "CHALLENGE", "CHAL_REPLY", "ACK", - "STATUS", "ERROR", "TERMREQ", - "PING", "PONG", - "ADD_SUBNET", "DEL_SUBNET", - "ADD_EDGE", "DEL_EDGE", "KEY_CHANGED", "REQ_KEY", "ANS_KEY", "PACKET", + "ID", "METAKEY", "CHALLENGE", "CHAL_REPLY", "ACK", + "STATUS", "ERROR", "TERMREQ", + "PING", "PONG", + "ADD_SUBNET", "DEL_SUBNET", + "ADD_EDGE", "DEL_EDGE", "KEY_CHANGED", "REQ_KEY", "ANS_KEY", "PACKET", }; static avl_tree_t *past_request_tree; bool check_id(const char *id) { for(; *id; id++) - if(!isalnum(*id) && *id != '_') + if(!isalnum(*id) && *id != '_') { return false; + } return true; } @@ -75,24 +76,24 @@ bool send_request(connection_t *c, const char *format, ...) { input buffer anyway */ va_start(args, format); - len = vsnprintf(buffer, sizeof buffer, format, args); - buffer[sizeof buffer - 1] = 0; + len = vsnprintf(buffer, sizeof(buffer), format, args); + buffer[sizeof(buffer) - 1] = 0; va_end(args); - if(len < 0 || len > sizeof buffer - 1) { + if(len < 0 || (size_t)len > sizeof(buffer) - 1) { logger(LOG_ERR, "Output buffer overflow while sending request to %s (%s)", - c->name, c->hostname); + c->name, c->hostname); return false; } ifdebug(PROTOCOL) { sscanf(buffer, "%d", &request); ifdebug(META) - logger(LOG_DEBUG, "Sending %s to %s (%s): %s", - request_name[request], c->name, c->hostname, buffer); + logger(LOG_DEBUG, "Sending %s to %s (%s): %s", + request_name[request], c->name, c->hostname, buffer); else logger(LOG_DEBUG, "Sending %s to %s (%s)", request_name[request], - c->name, c->hostname); + c->name, c->hostname); } buffer[len++] = '\n'; @@ -100,8 +101,9 @@ bool send_request(connection_t *c, const char *format, ...) { if(c == everyone) { broadcast_meta(NULL, buffer, len); return true; - } else + } else { return send_meta(c, buffer, len); + } } void forward_request(connection_t *from) { @@ -110,12 +112,12 @@ void forward_request(connection_t *from) { ifdebug(PROTOCOL) { sscanf(from->buffer, "%d", &request); ifdebug(META) - logger(LOG_DEBUG, "Forwarding %s from %s (%s): %s", - request_name[request], from->name, from->hostname, - from->buffer); + logger(LOG_DEBUG, "Forwarding %s from %s (%s): %s", + request_name[request], from->name, from->hostname, + from->buffer); else logger(LOG_DEBUG, "Forwarding %s from %s (%s)", - request_name[request], from->name, from->hostname); + request_name[request], from->name, from->hostname); } from->buffer[from->reqlen - 1] = '\n'; @@ -129,28 +131,28 @@ bool receive_request(connection_t *c) { if(sscanf(c->buffer, "%d", &request) == 1) { if((request < 0) || (request >= LAST) || !request_handlers[request]) { ifdebug(META) - logger(LOG_DEBUG, "Unknown request from %s (%s): %s", - c->name, c->hostname, c->buffer); + logger(LOG_DEBUG, "Unknown request from %s (%s): %s", + c->name, c->hostname, c->buffer); else logger(LOG_ERR, "Unknown request from %s (%s)", - c->name, c->hostname); + c->name, c->hostname); return false; } else { ifdebug(PROTOCOL) { ifdebug(META) - logger(LOG_DEBUG, "Got %s from %s (%s): %s", - request_name[request], c->name, c->hostname, - c->buffer); + logger(LOG_DEBUG, "Got %s from %s (%s): %s", + request_name[request], c->name, c->hostname, + c->buffer); else logger(LOG_DEBUG, "Got %s from %s (%s)", - request_name[request], c->name, c->hostname); + request_name[request], c->name, c->hostname); } } if((c->allow_request != ALL) && (c->allow_request != request)) { logger(LOG_ERR, "Unauthorized request from %s (%s)", c->name, - c->hostname); + c->hostname); return false; } @@ -158,12 +160,12 @@ bool receive_request(connection_t *c) { /* Something went wrong. Probably scriptkiddies. Terminate. */ logger(LOG_ERR, "Error while processing %s from %s (%s)", - request_name[request], c->name, c->hostname); + request_name[request], c->name, c->hostname); return false; } } else { logger(LOG_ERR, "Bogus data received from %s (%s)", - c->name, c->hostname); + c->name, c->hostname); return false; } @@ -175,8 +177,9 @@ static int past_request_compare(const past_request_t *a, const past_request_t *b } static void free_past_request(past_request_t *r) { - if(r->request) + if(r->request) { free(r->request); + } free(r); } @@ -190,7 +193,7 @@ void exit_requests(void) { } bool seen_request(char *request) { - past_request_t *new, p = {NULL}; + past_request_t *new, p = {}; p.request = request; @@ -215,13 +218,14 @@ void age_past_requests(void) { next = node->next; p = node->data; - if(p->firstseen + pinginterval <= now) + if(p->firstseen + pinginterval <= now) { avl_delete_node(past_request_tree, node), deleted++; - else + } else { left++; + } } if(left || deleted) ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Aging past requests: deleted %d, left %d", - deleted, left); + deleted, left); } diff --git a/src/protocol.h b/src/protocol.h index 147475a..a055f28 100644 --- a/src/protocol.h +++ b/src/protocol.h @@ -1,3 +1,6 @@ +#ifndef TINC_PROTOCOL_H +#define TINC_PROTOCOL_H + /* protocol.h -- header for protocol.c Copyright (C) 1999-2005 Ivo Timmermans, @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_PROTOCOL_H__ -#define __TINC_PROTOCOL_H__ - /* Protocol version. Different versions are incompatible, incompatible version have different protocols. */ @@ -37,7 +37,7 @@ typedef enum request_t { PROXY = -2, - ALL = -1, /* Guardian for allow_request */ + ALL = -1, /* Guardian for allow_request */ ID = 0, METAKEY, CHALLENGE, CHAL_REPLY, ACK, STATUS, ERROR, TERMREQ, PING, PONG, @@ -45,7 +45,7 @@ typedef enum request_t { ADD_EDGE, DEL_EDGE, KEY_CHANGED, REQ_KEY, ANS_KEY, PACKET, - LAST /* Guardian for the highest request number */ + LAST /* Guardian for the highest request number */ } request_t; typedef struct past_request_t { @@ -71,56 +71,50 @@ extern bool strictsubnets; /* Basic functions */ -extern bool send_request(struct connection_t *, const char *, ...) __attribute__ ((__format__(printf, 2, 3))); -extern void forward_request(struct connection_t *); -extern bool receive_request(struct connection_t *); -extern bool check_id(const char *); +extern bool send_request(struct connection_t *c, const char *format, ...) __attribute__((__format__(printf, 2, 3))); +extern void forward_request(struct connection_t *c); +extern bool receive_request(struct connection_t *c); +extern bool check_id(const char *name); extern void init_requests(void); extern void exit_requests(void); -extern bool seen_request(char *); +extern bool seen_request(char *request); extern void age_past_requests(void); /* Requests */ -extern bool send_id(struct connection_t *); -extern bool send_metakey(struct connection_t *); -extern bool send_challenge(struct connection_t *); -extern bool send_chal_reply(struct connection_t *); -extern bool send_ack(struct connection_t *); -extern bool send_status(struct connection_t *, int, const char *); -extern bool send_error(struct connection_t *, int,const char *); -extern bool send_termreq(struct connection_t *); -extern bool send_ping(struct connection_t *); -extern bool send_pong(struct connection_t *); -extern bool send_add_subnet(struct connection_t *, const struct subnet_t *); -extern bool send_del_subnet(struct connection_t *, const struct subnet_t *); -extern bool send_add_edge(struct connection_t *, const struct edge_t *); -extern bool send_del_edge(struct connection_t *, const struct edge_t *); +extern bool send_id(struct connection_t *c); +extern bool send_metakey(struct connection_t *c); +extern bool send_challenge(struct connection_t *c); +extern bool send_chal_reply(struct connection_t *c); +extern bool send_ack(struct connection_t *c); +extern bool send_ping(struct connection_t *c); +extern bool send_pong(struct connection_t *c); +extern bool send_add_subnet(struct connection_t *c, const struct subnet_t *subnet); +extern bool send_del_subnet(struct connection_t *c, const struct subnet_t *subnet); +extern bool send_add_edge(struct connection_t *c, const struct edge_t *e); +extern bool send_del_edge(struct connection_t *c, const struct edge_t *e); extern void send_key_changed(void); -extern bool send_req_key(struct node_t *); -extern bool send_ans_key(struct node_t *); -extern bool send_tcppacket(struct connection_t *, const struct vpn_packet_t *); +extern bool send_req_key(struct node_t *n); +extern bool send_ans_key(struct node_t *n); +extern bool send_tcppacket(struct connection_t *c, const struct vpn_packet_t *packet); /* Request handlers */ -extern bool id_h(struct connection_t *); -extern bool metakey_h(struct connection_t *); -extern bool challenge_h(struct connection_t *); -extern bool chal_reply_h(struct connection_t *); -extern bool ack_h(struct connection_t *); -extern bool status_h(struct connection_t *); -extern bool error_h(struct connection_t *); -extern bool termreq_h(struct connection_t *); -extern bool ping_h(struct connection_t *); -extern bool pong_h(struct connection_t *); -extern bool add_subnet_h(struct connection_t *); -extern bool del_subnet_h(struct connection_t *); -extern bool add_edge_h(struct connection_t *); -extern bool del_edge_h(struct connection_t *); -extern bool key_changed_h(struct connection_t *); -extern bool req_key_h(struct connection_t *); -extern bool ans_key_h(struct connection_t *); -extern bool tcppacket_h(struct connection_t *); +extern bool id_h(struct connection_t *c); +extern bool metakey_h(struct connection_t *c); +extern bool challenge_h(struct connection_t *c); +extern bool chal_reply_h(struct connection_t *c); +extern bool ack_h(struct connection_t *c); +extern bool ping_h(struct connection_t *c); +extern bool pong_h(struct connection_t *c); +extern bool add_subnet_h(struct connection_t *c); +extern bool del_subnet_h(struct connection_t *c); +extern bool add_edge_h(struct connection_t *c); +extern bool del_edge_h(struct connection_t *c); +extern bool key_changed_h(struct connection_t *c); +extern bool req_key_h(struct connection_t *c); +extern bool ans_key_h(struct connection_t *c); +extern bool tcppacket_h(struct connection_t *c); -#endif /* __TINC_PROTOCOL_H__ */ +#endif diff --git a/src/protocol_auth.c b/src/protocol_auth.c index 8288847..95bb751 100644 --- a/src/protocol_auth.c +++ b/src/protocol_auth.c @@ -41,11 +41,12 @@ #include "xalloc.h" bool send_id(connection_t *c) { - if(proxytype && c->outgoing && !c->status.proxy_passed) + if(proxytype && c->outgoing && !c->status.proxy_passed) { return send_proxyrequest(c); + } return send_request(c, "%d %s %d", ID, myself->connection->name, - myself->connection->protocol_version); + myself->connection->protocol_version); } bool id_h(connection_t *c) { @@ -53,7 +54,7 @@ bool id_h(connection_t *c) { if(sscanf(c->buffer, "%*d " MAX_STRING " %d", name, &c->protocol_version) != 2) { logger(LOG_ERR, "Got bad %s from %s (%s)", "ID", c->name, - c->hostname); + c->hostname); return false; } @@ -61,7 +62,7 @@ bool id_h(connection_t *c) { if(!check_id(name)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "ID", c->name, - c->hostname, "invalid name"); + c->hostname, "invalid name"); return false; } @@ -70,12 +71,14 @@ bool id_h(connection_t *c) { if(c->outgoing) { if(strcmp(c->name, name)) { logger(LOG_ERR, "Peer %s is %s instead of %s", c->hostname, name, - c->name); + c->name); return false; } } else { - if(c->name) + if(c->name) { free(c->name); + } + c->name = xstrdup(name); } @@ -83,13 +86,15 @@ bool id_h(connection_t *c) { if(c->protocol_version != myself->connection->protocol_version) { logger(LOG_ERR, "Peer %s (%s) uses incompatible version %d", - c->name, c->hostname, c->protocol_version); + c->name, c->hostname, c->protocol_version); return false; } if(bypass_security) { - if(!c->config_tree) + if(!c->config_tree) { init_configuration(&c->config_tree); + } + c->allow_request = ACK; return send_ack(c); } @@ -99,7 +104,7 @@ bool id_h(connection_t *c) { if(!read_connection_config(c)) { logger(LOG_ERR, "Peer %s had unknown identity (%s)", c->hostname, - c->name); + c->name); return false; } } @@ -136,18 +141,20 @@ bool send_metakey(connection_t *c) { /* Allocate buffers for the meta key */ char buffer[2 * len + 1]; - + c->outkey = xrealloc(c->outkey, len); if(!c->outctx) { c->outctx = EVP_CIPHER_CTX_new(); - if(!c->outctx) + + if(!c->outctx) { abort(); + } } /* Copy random data to the buffer */ - if (1 != RAND_bytes((unsigned char *)c->outkey, len)) { + if(1 != RAND_bytes((unsigned char *)c->outkey, len)) { int err = ERR_get_error(); logger(LOG_ERR, "Failed to generate meta key (%s)", ERR_error_string(err, NULL)); return false; @@ -170,7 +177,7 @@ bool send_metakey(connection_t *c) { bin2hex(c->outkey, buffer, len); buffer[len * 2] = '\0'; logger(LOG_DEBUG, "Generated random meta key (unencrypted): %s", - buffer); + buffer); } /* Encrypt the random data @@ -182,7 +189,7 @@ bool send_metakey(connection_t *c) { if(RSA_public_encrypt(len, (unsigned char *)c->outkey, (unsigned char *)buffer, c->rsa_key, RSA_NO_PADDING) != len) { logger(LOG_ERR, "Error during encryption of meta key for %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } @@ -194,19 +201,19 @@ bool send_metakey(connection_t *c) { /* Send the meta key */ x = send_request(c, "%d %d %d %d %d %s", METAKEY, - c->outcipher ? EVP_CIPHER_nid(c->outcipher) : 0, - c->outdigest ? EVP_MD_type(c->outdigest) : 0, c->outmaclength, - c->outcompression, buffer); + c->outcipher ? EVP_CIPHER_nid(c->outcipher) : 0, + c->outdigest ? EVP_MD_type(c->outdigest) : 0, c->outmaclength, + c->outcompression, buffer); /* Further outgoing requests are encrypted with the key we just generated */ if(c->outcipher) { if(!EVP_EncryptInit(c->outctx, c->outcipher, - (unsigned char *)c->outkey + len - EVP_CIPHER_key_length(c->outcipher), - (unsigned char *)c->outkey + len - EVP_CIPHER_key_length(c->outcipher) - - EVP_CIPHER_iv_length(c->outcipher))) { + (unsigned char *)c->outkey + len - EVP_CIPHER_key_length(c->outcipher), + (unsigned char *)c->outkey + len - EVP_CIPHER_key_length(c->outcipher) - + EVP_CIPHER_iv_length(c->outcipher))) { logger(LOG_ERR, "Error during initialisation of cipher for %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } @@ -224,7 +231,7 @@ bool metakey_h(connection_t *c) { if(sscanf(c->buffer, "%*d %d %d %d %d " MAX_STRING, &cipher, &digest, &maclength, &compression, buffer) != 5) { logger(LOG_ERR, "Got bad %s from %s (%s)", "METAKEY", c->name, - c->hostname); + c->hostname); return false; } @@ -232,7 +239,7 @@ bool metakey_h(connection_t *c) { /* Check if the length of the meta key is all right */ - if(strlen(buffer) != len * 2) { + if(strlen(buffer) != (size_t)len * 2) { logger(LOG_ERR, "Possible intruder %s (%s): %s", c->name, c->hostname, "wrong keylength"); return false; } @@ -243,8 +250,10 @@ bool metakey_h(connection_t *c) { if(!c->inctx) { c->inctx = EVP_CIPHER_CTX_new(); - if(!c->inctx) + + if(!c->inctx) { abort(); + } } /* Convert the challenge from hexadecimal back to binary */ @@ -256,9 +265,9 @@ bool metakey_h(connection_t *c) { /* Decrypt the meta key */ - if(RSA_private_decrypt(len, (unsigned char *)buffer, (unsigned char *)c->inkey, myself->connection->rsa_key, RSA_NO_PADDING) != len) { /* See challenge() */ + if(RSA_private_decrypt(len, (unsigned char *)buffer, (unsigned char *)c->inkey, myself->connection->rsa_key, RSA_NO_PADDING) != len) { /* See challenge() */ logger(LOG_ERR, "Error during decryption of meta key for %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } @@ -274,18 +283,18 @@ bool metakey_h(connection_t *c) { if(cipher) { c->incipher = EVP_get_cipherbynid(cipher); - + if(!c->incipher) { logger(LOG_ERR, "%s (%s) uses unknown cipher!", c->name, c->hostname); return false; } if(!EVP_DecryptInit(c->inctx, c->incipher, - (unsigned char *)c->inkey + len - EVP_CIPHER_key_length(c->incipher), - (unsigned char *)c->inkey + len - EVP_CIPHER_key_length(c->incipher) - - EVP_CIPHER_iv_length(c->incipher))) { + (unsigned char *)c->inkey + len - EVP_CIPHER_key_length(c->incipher), + (unsigned char *)c->inkey + len - EVP_CIPHER_key_length(c->incipher) - + EVP_CIPHER_iv_length(c->incipher))) { logger(LOG_ERR, "Error during initialisation of cipher from %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } @@ -333,7 +342,7 @@ bool send_challenge(connection_t *c) { /* Copy random data to the buffer */ - if (1 != RAND_bytes((unsigned char *)c->hischallenge, len)) { + if(1 != RAND_bytes((unsigned char *)c->hischallenge, len)) { int err = ERR_get_error(); logger(LOG_ERR, "Failed to generate challenge (%s)", ERR_error_string(err, NULL)); return false; // Do not send predictable challenges, let connection attempt fail. @@ -355,7 +364,7 @@ bool challenge_h(connection_t *c) { if(sscanf(c->buffer, "%*d " MAX_STRING, buffer) != 1) { logger(LOG_ERR, "Got bad %s from %s (%s)", "CHALLENGE", c->name, - c->hostname); + c->hostname); return false; } @@ -363,9 +372,9 @@ bool challenge_h(connection_t *c) { /* Check if the length of the challenge is all right */ - if(strlen(buffer) != len * 2) { + if(strlen(buffer) != (size_t)len * 2) { logger(LOG_ERR, "Possible intruder %s (%s): %s", c->name, - c->hostname, "wrong challenge length"); + c->hostname, "wrong challenge length"); return false; } @@ -394,15 +403,17 @@ bool send_chal_reply(connection_t *c) { /* Calculate the hash from the challenge we received */ ctx = EVP_MD_CTX_create(); - if(!ctx) + + if(!ctx) { abort(); + } if(!EVP_DigestInit(ctx, c->indigest) - || !EVP_DigestUpdate(ctx, c->mychallenge, RSA_size(myself->connection->rsa_key)) - || !EVP_DigestFinal(ctx, (unsigned char *)hash, NULL)) { + || !EVP_DigestUpdate(ctx, c->mychallenge, RSA_size(myself->connection->rsa_key)) + || !EVP_DigestFinal(ctx, (unsigned char *)hash, NULL)) { EVP_MD_CTX_destroy(ctx); logger(LOG_ERR, "Error during calculation of response for %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } @@ -425,15 +436,15 @@ bool chal_reply_h(connection_t *c) { if(sscanf(c->buffer, "%*d " MAX_STRING, hishash) != 1) { logger(LOG_ERR, "Got bad %s from %s (%s)", "CHAL_REPLY", c->name, - c->hostname); + c->hostname); return false; } /* Check if the length of the hash is all right */ - if(strlen(hishash) != EVP_MD_size(c->outdigest) * 2) { + if(strlen(hishash) != (size_t)EVP_MD_size(c->outdigest) * 2) { logger(LOG_ERR, "Possible intruder %s (%s): %s", c->name, - c->hostname, "wrong challenge reply length"); + c->hostname, "wrong challenge reply length"); return false; } @@ -447,15 +458,17 @@ bool chal_reply_h(connection_t *c) { /* Calculate the hash from the challenge we sent */ ctx = EVP_MD_CTX_create(); - if(!ctx) + + if(!ctx) { abort(); + } if(!EVP_DigestInit(ctx, c->outdigest) - || !EVP_DigestUpdate(ctx, c->hischallenge, RSA_size(c->rsa_key)) - || !EVP_DigestFinal(ctx, (unsigned char *)myhash, NULL)) { + || !EVP_DigestUpdate(ctx, c->hischallenge, RSA_size(c->rsa_key)) + || !EVP_DigestFinal(ctx, (unsigned char *)myhash, NULL)) { EVP_MD_CTX_destroy(ctx); logger(LOG_ERR, "Error during calculation of response from %s (%s): %s", - c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); + c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL)); return false; } @@ -465,7 +478,7 @@ bool chal_reply_h(connection_t *c) { if(memcmp(hishash, myhash, EVP_MD_size(c->outdigest))) { logger(LOG_ERR, "Possible intruder %s (%s): %s", c->name, - c->hostname, "wrong challenge reply"); + c->hostname, "wrong challenge reply"); ifdebug(SCARY_THINGS) { bin2hex(myhash, hishash, SHA_DIGEST_LENGTH); @@ -499,19 +512,24 @@ bool send_ack(connection_t *c) { /* Check some options */ - if((get_config_bool(lookup_config(c->config_tree, "IndirectData"), &choice) && choice) || myself->options & OPTION_INDIRECT) + if((get_config_bool(lookup_config(c->config_tree, "IndirectData"), &choice) && choice) || myself->options & OPTION_INDIRECT) { c->options |= OPTION_INDIRECT; + } - if((get_config_bool(lookup_config(c->config_tree, "TCPOnly"), &choice) && choice) || myself->options & OPTION_TCPONLY) + if((get_config_bool(lookup_config(c->config_tree, "TCPOnly"), &choice) && choice) || myself->options & OPTION_TCPONLY) { c->options |= OPTION_TCPONLY | OPTION_INDIRECT; + } - if(myself->options & OPTION_PMTU_DISCOVERY) + if(myself->options & OPTION_PMTU_DISCOVERY && !(c->options & OPTION_TCPONLY)) { c->options |= OPTION_PMTU_DISCOVERY; + } choice = myself->options & OPTION_CLAMP_MSS; get_config_bool(lookup_config(c->config_tree, "ClampMSS"), &choice); - if(choice) + + if(choice) { c->options |= OPTION_CLAMP_MSS; + } get_config_int(lookup_config(c->config_tree, "Weight"), &c->estimated_weight); @@ -559,7 +577,7 @@ bool ack_h(connection_t *c) { if(sscanf(c->buffer, "%*d " MAX_STRING " %d %x", hisport, &weight, &options) != 3) { logger(LOG_ERR, "Got bad %s from %s (%s)", "ACK", c->name, - c->hostname); + c->hostname); return false; } @@ -575,7 +593,7 @@ bool ack_h(connection_t *c) { if(n->connection) { /* Oh dear, we already have a connection to this node. */ ifdebug(CONNECTIONS) logger(LOG_DEBUG, "Established a second connection with %s (%s), closing old connection", - n->name, n->hostname); + n->name, n->hostname); terminate_connection(n->connection, false); /* Run graph algorithm to purge key and make sure up/down scripts are rerun with new IP addresses and stuff */ graph(); @@ -584,23 +602,28 @@ bool ack_h(connection_t *c) { n->connection = c; c->node = n; + if(!(c->options & options & OPTION_PMTU_DISCOVERY)) { c->options &= ~OPTION_PMTU_DISCOVERY; options &= ~OPTION_PMTU_DISCOVERY; } + c->options |= options; - if(get_config_int(lookup_config(c->config_tree, "PMTU"), &mtu) && mtu < n->mtu) + if(get_config_int(lookup_config(c->config_tree, "PMTU"), &mtu) && mtu < n->mtu) { n->mtu = mtu; + } - if(get_config_int(lookup_config(config_tree, "PMTU"), &mtu) && mtu < n->mtu) + if(get_config_int(lookup_config(config_tree, "PMTU"), &mtu) && mtu < n->mtu) { n->mtu = mtu; + } if(get_config_bool(lookup_config(c->config_tree, "ClampMSS"), &choice)) { - if(choice) + if(choice) { c->options |= OPTION_CLAMP_MSS; - else + } else { c->options &= ~OPTION_CLAMP_MSS; + } } /* Activate this connection */ @@ -609,7 +632,7 @@ bool ack_h(connection_t *c) { c->status.active = true; ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Connection with %s (%s) activated", c->name, - c->hostname); + c->hostname); /* Send him everything we know */ @@ -630,10 +653,11 @@ bool ack_h(connection_t *c) { /* Notify everyone of the new edge */ - if(tunnelserver) + if(tunnelserver) { send_add_edge(c, c->edge); - else + } else { send_add_edge(everyone, c->edge); + } /* Run MST and SSSP algorithms */ diff --git a/src/protocol_edge.c b/src/protocol_edge.c index f58fe1a..be48e0d 100644 --- a/src/protocol_edge.c +++ b/src/protocol_edge.c @@ -42,8 +42,8 @@ bool send_add_edge(connection_t *c, const edge_t *e) { sockaddr2str(&e->address, &address, &port); x = send_request(c, "%d %x %s %s %s %s %x %d", ADD_EDGE, rand(), - e->from->name, e->to->name, address, port, - e->options, e->weight); + e->from->name, e->to->name, address, port, + e->options, e->weight); free(address); free(port); @@ -62,9 +62,9 @@ bool add_edge_h(connection_t *c) { int weight; if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING" "MAX_STRING" "MAX_STRING" %x %d", - from_name, to_name, to_address, to_port, &options, &weight) != 6) { + from_name, to_name, to_address, to_port, &options, &weight) != 6) { logger(LOG_ERR, "Got bad %s from %s (%s)", "ADD_EDGE", c->name, - c->hostname); + c->hostname); return false; } @@ -72,12 +72,13 @@ bool add_edge_h(connection_t *c) { if(!check_id(from_name) || !check_id(to_name)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "ADD_EDGE", c->name, - c->hostname, "invalid name"); + c->hostname, "invalid name"); return false; } - if(seen_request(c->buffer)) + if(seen_request(c->buffer)) { return true; + } /* Lookup nodes */ @@ -85,12 +86,12 @@ bool add_edge_h(connection_t *c) { to = lookup_node(to_name); if(tunnelserver && - from != myself && from != c->node && - to != myself && to != c->node) { + from != myself && from != c->node && + to != myself && to != c->node) { /* ignore indirect edge registrations for tunnelserver */ ifdebug(PROTOCOL) logger(LOG_WARNING, - "Ignoring indirect %s from %s (%s)", - "ADD_EDGE", c->name, c->hostname); + "Ignoring indirect %s from %s (%s)", + "ADD_EDGE", c->name, c->hostname); return true; } @@ -119,17 +120,19 @@ bool add_edge_h(connection_t *c) { if(e->weight != weight || e->options != options || sockaddrcmp(&e->address, &address)) { if(from == myself) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for ourself which does not match existing entry", - "ADD_EDGE", c->name, c->hostname); + "ADD_EDGE", c->name, c->hostname); send_add_edge(c, e); return true; } else { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) which does not match existing entry", - "ADD_EDGE", c->name, c->hostname); + "ADD_EDGE", c->name, c->hostname); e->options = options; + if(sockaddrcmp(&e->address, &address)) { sockaddrfree(&e->address); e->address = address; } + if(e->weight != weight) { avl_node_t *node = avl_unlink(edge_weight_tree, e); e->weight = weight; @@ -138,11 +141,12 @@ bool add_edge_h(connection_t *c) { goto done; } - } else + } else { return true; + } } else if(from == myself) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for ourself which does not exist", - "ADD_EDGE", c->name, c->hostname); + "ADD_EDGE", c->name, c->hostname); contradicting_add_edge++; e = new_edge(); e->from = from; @@ -163,8 +167,9 @@ bool add_edge_h(connection_t *c) { done: /* Tell the rest about the new edge */ - if(!tunnelserver) + if(!tunnelserver) { forward_request(c); + } /* Run MST before or after we tell the rest? */ @@ -175,7 +180,7 @@ done: bool send_del_edge(connection_t *c, const edge_t *e) { return send_request(c, "%d %x %s %s", DEL_EDGE, rand(), - e->from->name, e->to->name); + e->from->name, e->to->name); } bool del_edge_h(connection_t *c) { @@ -186,7 +191,7 @@ bool del_edge_h(connection_t *c) { if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING, from_name, to_name) != 2) { logger(LOG_ERR, "Got bad %s from %s (%s)", "DEL_EDGE", c->name, - c->hostname); + c->hostname); return false; } @@ -194,12 +199,13 @@ bool del_edge_h(connection_t *c) { if(!check_id(from_name) || !check_id(to_name)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "DEL_EDGE", c->name, - c->hostname, "invalid name"); + c->hostname, "invalid name"); return false; } - if(seen_request(c->buffer)) + if(seen_request(c->buffer)) { return true; + } /* Lookup nodes */ @@ -207,24 +213,24 @@ bool del_edge_h(connection_t *c) { to = lookup_node(to_name); if(tunnelserver && - from != myself && from != c->node && - to != myself && to != c->node) { + from != myself && from != c->node && + to != myself && to != c->node) { /* ignore indirect edge registrations for tunnelserver */ ifdebug(PROTOCOL) logger(LOG_WARNING, - "Ignoring indirect %s from %s (%s)", - "DEL_EDGE", c->name, c->hostname); + "Ignoring indirect %s from %s (%s)", + "DEL_EDGE", c->name, c->hostname); return true; } if(!from) { ifdebug(PROTOCOL) logger(LOG_ERR, "Got %s from %s (%s) which does not appear in the edge tree", - "DEL_EDGE", c->name, c->hostname); + "DEL_EDGE", c->name, c->hostname); return true; } if(!to) { ifdebug(PROTOCOL) logger(LOG_ERR, "Got %s from %s (%s) which does not appear in the edge tree", - "DEL_EDGE", c->name, c->hostname); + "DEL_EDGE", c->name, c->hostname); return true; } @@ -234,22 +240,23 @@ bool del_edge_h(connection_t *c) { if(!e) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) which does not appear in the edge tree", - "DEL_EDGE", c->name, c->hostname); + "DEL_EDGE", c->name, c->hostname); return true; } if(e->from == myself) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for ourself", - "DEL_EDGE", c->name, c->hostname); + "DEL_EDGE", c->name, c->hostname); contradicting_del_edge++; - send_add_edge(c, e); /* Send back a correction */ + send_add_edge(c, e); /* Send back a correction */ return true; } /* Tell the rest about the deleted edge */ - if(!tunnelserver) + if(!tunnelserver) { forward_request(c); + } /* Delete the edge */ @@ -263,9 +270,12 @@ bool del_edge_h(connection_t *c) { if(!to->status.reachable) { e = lookup_edge(to, myself); + if(e) { - if(!tunnelserver) + if(!tunnelserver) { send_del_edge(everyone, e); + } + edge_del(e); } } diff --git a/src/protocol_key.c b/src/protocol_key.c index 5f71d1c..ee292b6 100644 --- a/src/protocol_key.c +++ b/src/protocol_key.c @@ -46,8 +46,10 @@ void send_key_changed(void) { for(node = connection_tree->head; node; node = node->next) { c = node->data; - if(c->status.active && c->node && c->node->status.reachable) + + if(c->status.active && c->node && c->node->status.reachable) { send_ans_key(c->node); + } } } @@ -57,7 +59,7 @@ bool key_changed_h(connection_t *c) { if(sscanf(c->buffer, "%*d %*x " MAX_STRING, name) != 1) { logger(LOG_ERR, "Got bad %s from %s (%s)", "KEY_CHANGED", - c->name, c->hostname); + c->name, c->hostname); return false; } @@ -66,14 +68,15 @@ bool key_changed_h(connection_t *c) { return false; } - if(seen_request(c->buffer)) + if(seen_request(c->buffer)) { return true; + } n = lookup_node(name); if(!n) { logger(LOG_ERR, "Got %s from %s (%s) origin %s which does not exist", - "KEY_CHANGED", c->name, c->hostname, name); + "KEY_CHANGED", c->name, c->hostname, name); return true; } @@ -82,8 +85,9 @@ bool key_changed_h(connection_t *c) { /* Tell the others */ - if(!tunnelserver) + if(!tunnelserver) { forward_request(c); + } return true; } @@ -99,7 +103,7 @@ bool req_key_h(connection_t *c) { if(sscanf(c->buffer, "%*d " MAX_STRING " " MAX_STRING, from_name, to_name) != 2) { logger(LOG_ERR, "Got bad %s from %s (%s)", "REQ_KEY", c->name, - c->hostname); + c->hostname); return false; } @@ -112,7 +116,7 @@ bool req_key_h(connection_t *c) { if(!from) { logger(LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list", - "REQ_KEY", c->name, c->hostname, from_name); + "REQ_KEY", c->name, c->hostname, from_name); return true; } @@ -120,22 +124,24 @@ bool req_key_h(connection_t *c) { if(!to) { logger(LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list", - "REQ_KEY", c->name, c->hostname, to_name); + "REQ_KEY", c->name, c->hostname, to_name); return true; } /* Check if this key request is for us */ - if(to == myself) { /* Yes, send our own key back */ - if (!send_ans_key(from)) + if(to == myself) { /* Yes, send our own key back */ + if(!send_ans_key(from)) { return false; + } } else { - if(tunnelserver) + if(tunnelserver) { return true; + } if(!to->status.reachable) { logger(LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable", - "REQ_KEY", c->name, c->hostname, to_name); + "REQ_KEY", c->name, c->hostname, to_name); return true; } @@ -157,19 +163,23 @@ bool send_ans_key(node_t *to) { to->inkey = xrealloc(to->inkey, to->inkeylength); // Create a new key - if (1 != RAND_bytes((unsigned char *)to->inkey, to->inkeylength)) { + if(1 != RAND_bytes((unsigned char *)to->inkey, to->inkeylength)) { int err = ERR_get_error(); logger(LOG_ERR, "Failed to generate random for key (%s)", ERR_error_string(err, NULL)); return false; // Do not send insecure keys, let connection attempt fail. } - if(to->incipher) + if(to->incipher) { EVP_DecryptInit_ex(to->inctx, to->incipher, NULL, (unsigned char *)to->inkey, (unsigned char *)to->inkey + EVP_CIPHER_key_length(to->incipher)); + } // Reset sequence number and late packet window mykeyused = true; to->received_seqno = 0; - if(replaywin) memset(to->late, 0, replaywin); + + if(replaywin) { + memset(to->late, 0, replaywin); + } // Convert to hexadecimal and send char key[2 * to->inkeylength + 1]; @@ -177,10 +187,10 @@ bool send_ans_key(node_t *to) { key[to->inkeylength * 2] = '\0'; return send_request(to->nexthop->connection, "%d %s %s %s %d %d %d %d", ANS_KEY, - myself->name, to->name, key, - to->incipher ? EVP_CIPHER_nid(to->incipher) : 0, - to->indigest ? EVP_MD_type(to->indigest) : 0, to->inmaclength, - to->incompression); + myself->name, to->name, key, + to->incipher ? EVP_CIPHER_nid(to->incipher) : 0, + to->indigest ? EVP_MD_type(to->indigest) : 0, to->inmaclength, + to->incompression); } bool ans_key_h(connection_t *c) { @@ -193,10 +203,10 @@ bool ans_key_h(connection_t *c) { node_t *from, *to; if(sscanf(c->buffer, "%*d "MAX_STRING" "MAX_STRING" "MAX_STRING" %d %d %d %d "MAX_STRING" "MAX_STRING, - from_name, to_name, key, &cipher, &digest, &maclength, - &compression, address, port) < 7) { + from_name, to_name, key, &cipher, &digest, &maclength, + &compression, address, port) < 7) { logger(LOG_ERR, "Got bad %s from %s (%s)", "ANS_KEY", c->name, - c->hostname); + c->hostname); return false; } @@ -209,7 +219,7 @@ bool ans_key_h(connection_t *c) { if(!from) { logger(LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list", - "ANS_KEY", c->name, c->hostname, from_name); + "ANS_KEY", c->name, c->hostname, from_name); return true; } @@ -217,19 +227,20 @@ bool ans_key_h(connection_t *c) { if(!to) { logger(LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list", - "ANS_KEY", c->name, c->hostname, to_name); + "ANS_KEY", c->name, c->hostname, to_name); return true; } /* Forward it if necessary */ if(to != myself) { - if(tunnelserver) + if(tunnelserver) { return true; + } if(!to->status.reachable) { logger(LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable", - "ANS_KEY", c->name, c->hostname, to_name); + "ANS_KEY", c->name, c->hostname, to_name); return true; } @@ -252,6 +263,7 @@ bool ans_key_h(connection_t *c) { /* Update our copy of the origin's packet key */ from->outkey = xrealloc(from->outkey, strlen(key) / 2); from->outkeylength = strlen(key) / 2; + if(!hex2bin(key, from->outkey, from->outkeylength)) { logger(LOG_ERR, "Got bad %s from %s(%s): %s", "ANS_KEY", from->name, from->hostname, "invalid key"); return true; @@ -264,13 +276,13 @@ bool ans_key_h(connection_t *c) { if(!from->outcipher) { logger(LOG_ERR, "Node %s (%s) uses unknown cipher!", from->name, - from->hostname); + from->hostname); return true; } if(from->outkeylength != EVP_CIPHER_key_length(from->outcipher) + EVP_CIPHER_iv_length(from->outcipher)) { logger(LOG_ERR, "Node %s (%s) uses wrong keylength!", from->name, - from->hostname); + from->hostname); return true; } } else { @@ -284,13 +296,13 @@ bool ans_key_h(connection_t *c) { if(!from->outdigest) { logger(LOG_ERR, "Node %s (%s) uses unknown digest!", from->name, - from->hostname); + from->hostname); return true; } if(from->outmaclength > EVP_MD_size(from->outdigest) || from->outmaclength < 0) { logger(LOG_ERR, "Node %s (%s) uses bogus MAC length!", - from->name, from->hostname); + from->name, from->hostname); return true; } } else { @@ -301,13 +313,13 @@ bool ans_key_h(connection_t *c) { logger(LOG_ERR, "Node %s (%s) uses bogus compression level!", from->name, from->hostname); return true; } - + from->outcompression = compression; if(from->outcipher) if(!EVP_EncryptInit_ex(from->outctx, from->outcipher, NULL, (unsigned char *)from->outkey, (unsigned char *)from->outkey + EVP_CIPHER_key_length(from->outcipher))) { logger(LOG_ERR, "Error during initialisation of key from %s (%s): %s", - from->name, from->hostname, ERR_error_string(ERR_get_error(), NULL)); + from->name, from->hostname, ERR_error_string(ERR_get_error(), NULL)); return true; } @@ -320,8 +332,9 @@ bool ans_key_h(connection_t *c) { update_node_udp(from, &sa); } - if(from->options & OPTION_PMTU_DISCOVERY && !from->mtuevent) + if(from->options & OPTION_PMTU_DISCOVERY && !from->mtuevent) { send_mtu_probe(from); + } return true; } diff --git a/src/protocol_misc.c b/src/protocol_misc.c index 05afbce..b57e00f 100644 --- a/src/protocol_misc.c +++ b/src/protocol_misc.c @@ -31,66 +31,6 @@ int maxoutbufsize = 0; -/* Status and error notification routines */ - -bool send_status(connection_t *c, int statusno, const char *statusstring) { - if(!statusstring) - statusstring = "Status"; - - return send_request(c, "%d %d %s", STATUS, statusno, statusstring); -} - -bool status_h(connection_t *c) { - int statusno; - char statusstring[MAX_STRING_SIZE]; - - if(sscanf(c->buffer, "%*d %d " MAX_STRING, &statusno, statusstring) != 2) { - logger(LOG_ERR, "Got bad %s from %s (%s)", "STATUS", - c->name, c->hostname); - return false; - } - - ifdebug(STATUS) logger(LOG_NOTICE, "Status message from %s (%s): %d: %s", - c->name, c->hostname, statusno, statusstring); - - return true; -} - -bool send_error(connection_t *c, int err, const char *errstring) { - if(!errstring) - errstring = "Error"; - - return send_request(c, "%d %d %s", ERROR, err, errstring); -} - -bool error_h(connection_t *c) { - int err; - char errorstring[MAX_STRING_SIZE]; - - if(sscanf(c->buffer, "%*d %d " MAX_STRING, &err, errorstring) != 2) { - logger(LOG_ERR, "Got bad %s from %s (%s)", "ERROR", - c->name, c->hostname); - return false; - } - - ifdebug(ERROR) logger(LOG_NOTICE, "Error message from %s (%s): %d: %s", - c->name, c->hostname, err, errorstring); - - terminate_connection(c, c->status.active); - - return true; -} - -bool send_termreq(connection_t *c) { - return send_request(c, "%d", TERMREQ); -} - -bool termreq_h(connection_t *c) { - terminate_connection(c, c->status.active); - - return true; -} - bool send_ping(connection_t *c) { c->status.pinged = true; c->last_ping_time = now; @@ -114,8 +54,11 @@ bool pong_h(connection_t *c) { if(c->outgoing) { c->outgoing->timeout = 0; c->outgoing->cfg = NULL; - if(c->outgoing->ai) + + if(c->outgoing->ai) { freeaddrinfo(c->outgoing->ai); + } + c->outgoing->ai = NULL; c->outgoing->aip = NULL; } @@ -127,23 +70,25 @@ bool pong_h(connection_t *c) { bool send_tcppacket(connection_t *c, const vpn_packet_t *packet) { /* If there already is a lot of data in the outbuf buffer, discard this packet. - We use a very simple Random Early Drop algorithm. */ + We use a very simple Random Early Drop algorithm. */ - if(2.0 * c->outbuflen / (float)maxoutbufsize - 1 > (float)rand()/(float)RAND_MAX) + if(2.0 * c->outbuflen / (float)maxoutbufsize - 1 > (float)rand() / (float)RAND_MAX) { return true; + } - if(!send_request(c, "%d %hd", PACKET, packet->len)) + if(!send_request(c, "%d %hd", PACKET, packet->len)) { return false; + } return send_meta(c, (char *)packet->data, packet->len) && flush_meta(c); } bool tcppacket_h(connection_t *c) { - short int len; + length_t len; - if(sscanf(c->buffer, "%*d %hd", &len) != 1) { + if(sscanf(c->buffer, "%*d %hu", &len) != 1) { logger(LOG_ERR, "Got bad %s from %s (%s)", "PACKET", c->name, - c->hostname); + c->hostname); return false; } diff --git a/src/protocol_subnet.c b/src/protocol_subnet.c index 62656c3..01aed64 100644 --- a/src/protocol_subnet.c +++ b/src/protocol_subnet.c @@ -35,8 +35,9 @@ bool send_add_subnet(connection_t *c, const subnet_t *subnet) { char netstr[MAXNETSTR]; - if(!net2str(netstr, sizeof netstr, subnet)) + if(!net2str(netstr, sizeof(netstr), subnet)) { return false; + } return send_request(c, "%d %x %s %s", ADD_SUBNET, rand(), subnet->owner->name, netstr); } @@ -45,11 +46,11 @@ bool add_subnet_h(connection_t *c) { char subnetstr[MAX_STRING_SIZE]; char name[MAX_STRING_SIZE]; node_t *owner; - subnet_t s = {NULL}, *new, *old; + subnet_t s = {}, *new, *old; if(sscanf(c->buffer, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) { logger(LOG_ERR, "Got bad %s from %s (%s)", "ADD_SUBNET", c->name, - c->hostname); + c->hostname); return false; } @@ -57,7 +58,7 @@ bool add_subnet_h(connection_t *c) { if(!check_id(name)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "ADD_SUBNET", c->name, - c->hostname, "invalid name"); + c->hostname, "invalid name"); return false; } @@ -65,12 +66,13 @@ bool add_subnet_h(connection_t *c) { if(!str2net(&s, subnetstr)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "ADD_SUBNET", c->name, - c->hostname, "invalid subnet string"); + c->hostname, "invalid subnet string"); return false; } - if(seen_request(c->buffer)) + if(seen_request(c->buffer)) { return true; + } /* Check if the owner of the new subnet is in the connection list */ @@ -79,7 +81,7 @@ bool add_subnet_h(connection_t *c) { if(tunnelserver && owner != myself && owner != c->node) { /* in case of tunnelserver, ignore indirect subnet registrations */ ifdebug(PROTOCOL) logger(LOG_WARNING, "Ignoring indirect %s from %s (%s) for %s", - "ADD_SUBNET", c->name, c->hostname, subnetstr); + "ADD_SUBNET", c->name, c->hostname, subnetstr); return true; } @@ -91,14 +93,15 @@ bool add_subnet_h(connection_t *c) { /* Check if we already know this subnet */ - if(lookup_subnet(owner, &s)) + if(lookup_subnet(owner, &s)) { return true; + } /* If we don't know this subnet, but we are the owner, retaliate with a DEL_SUBNET */ if(owner == myself) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for ourself", - "ADD_SUBNET", c->name, c->hostname); + "ADD_SUBNET", c->name, c->hostname); s.owner = myself; send_del_subnet(c, &s); return true; @@ -108,7 +111,7 @@ bool add_subnet_h(connection_t *c) { if(tunnelserver) { logger(LOG_WARNING, "Ignoring unauthorized %s from %s (%s): %s", - "ADD_SUBNET", c->name, c->hostname, subnetstr); + "ADD_SUBNET", c->name, c->hostname, subnetstr); return true; } @@ -116,7 +119,7 @@ bool add_subnet_h(connection_t *c) { if(strictsubnets) { logger(LOG_WARNING, "Ignoring unauthorized %s from %s (%s): %s", - "ADD_SUBNET", c->name, c->hostname, subnetstr); + "ADD_SUBNET", c->name, c->hostname, subnetstr); forward_request(c); return true; } @@ -126,8 +129,9 @@ bool add_subnet_h(connection_t *c) { *(new = new_subnet()) = s; subnet_add(owner, new); - if(owner->status.reachable) + if(owner->status.reachable) { subnet_update(owner, new, true); + } /* Tell the rest */ @@ -135,8 +139,9 @@ bool add_subnet_h(connection_t *c) { /* Fast handoff of roaming MAC addresses */ - if(s.type == SUBNET_MAC && owner != myself && (old = lookup_subnet(myself, &s)) && old->expires) + if(s.type == SUBNET_MAC && owner != myself && (old = lookup_subnet(myself, &s)) && old->expires) { old->expires = now; + } return true; } @@ -144,8 +149,9 @@ bool add_subnet_h(connection_t *c) { bool send_del_subnet(connection_t *c, const subnet_t *s) { char netstr[MAXNETSTR]; - if(!net2str(netstr, sizeof netstr, s)) + if(!net2str(netstr, sizeof(netstr), s)) { return false; + } return send_request(c, "%d %x %s %s", DEL_SUBNET, rand(), s->owner->name, netstr); } @@ -154,11 +160,11 @@ bool del_subnet_h(connection_t *c) { char subnetstr[MAX_STRING_SIZE]; char name[MAX_STRING_SIZE]; node_t *owner; - subnet_t s = {NULL}, *find; + subnet_t s = {}, *find; if(sscanf(c->buffer, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) { logger(LOG_ERR, "Got bad %s from %s (%s)", "DEL_SUBNET", c->name, - c->hostname); + c->hostname); return false; } @@ -166,7 +172,7 @@ bool del_subnet_h(connection_t *c) { if(!check_id(name)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "DEL_SUBNET", c->name, - c->hostname, "invalid name"); + c->hostname, "invalid name"); return false; } @@ -174,12 +180,13 @@ bool del_subnet_h(connection_t *c) { if(!str2net(&s, subnetstr)) { logger(LOG_ERR, "Got bad %s from %s (%s): %s", "DEL_SUBNET", c->name, - c->hostname, "invalid subnet string"); + c->hostname, "invalid subnet string"); return false; } - if(seen_request(c->buffer)) + if(seen_request(c->buffer)) { return true; + } /* Check if the owner of the subnet being deleted is in the connection list */ @@ -188,13 +195,13 @@ bool del_subnet_h(connection_t *c) { if(tunnelserver && owner != myself && owner != c->node) { /* in case of tunnelserver, ignore indirect subnet deletion */ ifdebug(PROTOCOL) logger(LOG_WARNING, "Ignoring indirect %s from %s (%s) for %s", - "DEL_SUBNET", c->name, c->hostname, subnetstr); + "DEL_SUBNET", c->name, c->hostname, subnetstr); return true; } if(!owner) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for %s which is not in our node tree", - "DEL_SUBNET", c->name, c->hostname, name); + "DEL_SUBNET", c->name, c->hostname, name); return true; } @@ -206,9 +213,12 @@ bool del_subnet_h(connection_t *c) { if(!find) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for %s which does not appear in his subnet tree", - "DEL_SUBNET", c->name, c->hostname, name); - if(strictsubnets) + "DEL_SUBNET", c->name, c->hostname, name); + + if(strictsubnets) { forward_request(c); + } + return true; } @@ -216,24 +226,28 @@ bool del_subnet_h(connection_t *c) { if(owner == myself) { ifdebug(PROTOCOL) logger(LOG_WARNING, "Got %s from %s (%s) for ourself", - "DEL_SUBNET", c->name, c->hostname); + "DEL_SUBNET", c->name, c->hostname); send_add_subnet(c, find); return true; } - if(tunnelserver) + if(tunnelserver) { return true; + } /* Tell the rest */ forward_request(c); - if(strictsubnets) + + if(strictsubnets) { return true; + } /* Finally, delete it. */ - if(owner->status.reachable) + if(owner->status.reachable) { subnet_update(owner, find, false); + } subnet_del(owner, find); diff --git a/src/proxy.c b/src/proxy.c index ba48218..979626c 100644 --- a/src/proxy.c +++ b/src/proxy.c @@ -35,28 +35,40 @@ char *proxypass; static void update_address_ipv4(connection_t *c, void *address, void *port) { sockaddrfree(&c->address); - memset(&c->address, 0, sizeof c->address); + memset(&c->address, 0, sizeof(c->address)); c->address.sa.sa_family = AF_INET; - if(address) + + if(address) { memcpy(&c->address.in.sin_addr, address, sizeof(ipv4_t)); - if(port) + } + + if(port) { memcpy(&c->address.in.sin_port, port, sizeof(uint16_t)); + } + // OpenSSH -D returns all zero address, set it to 0.0.0.1 to prevent spamming ourselves. - if(!memcmp(&c->address.in.sin_addr, "\0\0\0\0", 4)) + if(!memcmp(&c->address.in.sin_addr, "\0\0\0\0", 4)) { memcpy(&c->address.in.sin_addr, "\0\0\0\01", 4); + } } static void update_address_ipv6(connection_t *c, void *address, void *port) { sockaddrfree(&c->address); - memset(&c->address, 0, sizeof c->address); + memset(&c->address, 0, sizeof(c->address)); c->address.sa.sa_family = AF_INET6; - if(address) + + if(address) { memcpy(&c->address.in6.sin6_addr, address, sizeof(ipv6_t)); - if(port) + } + + if(port) { memcpy(&c->address.in6.sin6_port, port, sizeof(uint16_t)); + } + // OpenSSH -D returns all zero address, set it to 0100:: to prevent spamming ourselves. - if(!memcmp(&c->address.in6.sin6_addr, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16)) + if(!memcmp(&c->address.in6.sin6_addr, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16)) { memcpy(&c->address.in6.sin6_addr, "\01\0\0\0\0\0\0\0", 8); + } } bool send_proxyrequest(connection_t *c) { @@ -66,19 +78,28 @@ bool send_proxyrequest(connection_t *c) { logger(LOG_ERR, "Can only connect to numeric IPv4 addresses through a SOCKS 4 proxy!"); return false; } + + // fallthrough case PROXY_SOCKS4A: { if(c->address.sa.sa_family != AF_INET && c->address.sa.sa_family != AF_UNKNOWN) { logger(LOG_ERR, "Can only connect to IPv4 addresses or hostnames through a SOCKS 4a proxy!"); return false; } + int len = 9; - if(proxyuser) + + if(proxyuser) { len += strlen(proxyuser); - if(c->address.sa.sa_family == AF_UNKNOWN) + } + + if(c->address.sa.sa_family == AF_UNKNOWN) { len += 1 + strlen(c->address.unknown.address); + } + char s4req[len]; s4req[0] = 4; s4req[1] = 1; + if(c->address.sa.sa_family == AF_INET) { memcpy(s4req + 2, &c->address.in.sin_port, 2); memcpy(s4req + 4, &c->address.in.sin_addr, 4); @@ -88,17 +109,21 @@ bool send_proxyrequest(connection_t *c) { memcpy(s4req + 4, "\0\0\0\1", 4); strcpy(s4req + (9 + (proxyuser ? strlen(proxyuser) : 0)), c->address.unknown.address); } - if(proxyuser) + + if(proxyuser) { strcpy(s4req + 8, proxyuser); - else + } else { s4req[8] = 0; - s4req[sizeof s4req - 1] = 0; + } + + s4req[sizeof(s4req) - 1] = 0; c->allow_request = PROXY; - return send_meta(c, s4req, sizeof s4req); + return send_meta(c, s4req, sizeof(s4req)); } case PROXY_SOCKS5: { int len = 3 + 6; + if(c->address.sa.sa_family == AF_INET) { len += 4; } else if(c->address.sa.sa_family == AF_INET6) { @@ -109,12 +134,16 @@ bool send_proxyrequest(connection_t *c) { logger(LOG_ERR, "Address family %x not supported for SOCKS 5 proxies!", c->address.sa.sa_family); return false; } - if(proxypass) + + if(proxypass) { len += 3 + strlen(proxyuser) + strlen(proxypass); + } + char s5req[len]; int i = 0; s5req[i++] = 5; s5req[i++] = 1; + if(proxypass) { s5req[i++] = 2; s5req[i++] = 1; @@ -127,9 +156,11 @@ bool send_proxyrequest(connection_t *c) { } else { s5req[i++] = 0; } + s5req[i++] = 5; s5req[i++] = 1; s5req[i++] = 0; + if(c->address.sa.sa_family == AF_INET) { s5req[i++] = 1; memcpy(s5req + i, &c->address.in.sin_addr, 4); @@ -155,10 +186,13 @@ bool send_proxyrequest(connection_t *c) { logger(LOG_ERR, "Unknown address family while trying to connect to SOCKS5 proxy"); return false; } - if(i > len) + + if(i > len) { abort(); + } + c->allow_request = PROXY; - return send_meta(c, s5req, sizeof s5req); + return send_meta(c, s5req, sizeof(s5req)); } case PROXY_HTTP: { @@ -182,15 +216,18 @@ bool send_proxyrequest(connection_t *c) { } } -int receive_proxy_meta(connection_t *c, int start, int lenin) { +int receive_proxy_meta(connection_t *c) { switch(proxytype) { case PROXY_SOCKS4: case PROXY_SOCKS4A: - if(c->buflen < 8) + if(c->buflen < 8) { return 0; + } + if(c->buffer[0] == 0 && c->buffer[1] == 0x5a) { - if(c->address.sa.sa_family == AF_UNKNOWN) + if(c->address.sa.sa_family == AF_UNKNOWN) { update_address_ipv4(c, c->buffer + 4, c->buffer + 2); + } ifdebug(CONNECTIONS) logger(LOG_DEBUG, "Proxy request granted"); c->allow_request = ID; @@ -203,49 +240,71 @@ int receive_proxy_meta(connection_t *c, int start, int lenin) { } case PROXY_SOCKS5: - if(c->buflen < 2) + if(c->buflen < 2) { return 0; + } + if(c->buffer[0] != 0x05 || c->buffer[1] == (char)0xff) { logger(LOG_ERR, "Proxy authentication method rejected"); return -1; } + int offset = 2; + if(c->buffer[1] == 0x02) { - if(c->buflen < 4) + if(c->buflen < 4) { return 0; + } + if(c->buffer[2] != 0x05 || c->buffer[3] != 0x00) { logger(LOG_ERR, "Proxy username/password rejected"); return -1; } + offset += 2; } - if(c->buflen - offset < 7) + + if(c->buflen - offset < 7) { return 0; + } + if(c->buffer[offset] != 0x05 || c->buffer[offset + 1] != 0x00) { logger(LOG_ERR, "Proxy request rejected"); return -1; } + int replen = offset + 6; + switch(c->buffer[offset + 3]) { - case 0x01: // IPv4 - if(c->address.sa.sa_family == AF_UNKNOWN) - update_address_ipv4(c, c->buffer + offset + 4, c->buffer + offset + 8); - replen += 4; - break; - case 0x03: // Hostname - if(c->address.sa.sa_family == AF_UNKNOWN) - update_address_ipv4(c, "\0\0\0\1", "\0\0"); - replen += ((uint8_t *)c->buffer)[offset + 4]; - break; - case 0x04: // IPv6 - if(c->address.sa.sa_family == AF_UNKNOWN) - update_address_ipv6(c, c->buffer + offset + 4, c->buffer + offset + 20); - replen += 16; - break; - default: - logger(LOG_ERR, "Proxy reply malformed"); - return -1; + case 0x01: // IPv4 + if(c->address.sa.sa_family == AF_UNKNOWN) { + update_address_ipv4(c, c->buffer + offset + 4, c->buffer + offset + 8); + } + + replen += 4; + break; + + case 0x03: // Hostname + if(c->address.sa.sa_family == AF_UNKNOWN) { + update_address_ipv4(c, "\0\0\0\1", "\0\0"); + } + + replen += ((uint8_t *)c->buffer)[offset + 4]; + break; + + case 0x04: // IPv6 + if(c->address.sa.sa_family == AF_UNKNOWN) { + update_address_ipv6(c, c->buffer + offset + 4, c->buffer + offset + 20); + } + + replen += 16; + break; + + default: + logger(LOG_ERR, "Proxy reply malformed"); + return -1; } + if(c->buflen < replen) { return 0; } else { @@ -258,24 +317,31 @@ int receive_proxy_meta(connection_t *c, int start, int lenin) { case PROXY_HTTP: { char *p = memchr(c->buffer, '\n', c->buflen); - if(!p || p - c->buffer >= c->buflen) - return 0; - while((p = memchr(p + 1, '\n', c->buflen - (p + 1 - c->buffer)))) { - if(p > c->buffer + 3 && !memcmp(p - 3, "\r\n\r\n", 4)) - break; + if(!p || p - c->buffer >= c->buflen) { + return 0; } - if(!p) - return 0; + while((p = memchr(p + 1, '\n', c->buflen - (p + 1 - c->buffer)))) { + if(p > c->buffer + 3 && !memcmp(p - 3, "\r\n\r\n", 4)) { + break; + } + } - if(c->buflen < 9) + if(!p) { return 0; + } + + if(c->buflen < 9) { + return 0; + } if(!strncasecmp(c->buffer, "HTTP/1.1 ", 9)) { if(!strncmp(c->buffer + 9, "200", 3)) { - if(c->address.sa.sa_family == AF_UNKNOWN) + if(c->address.sa.sa_family == AF_UNKNOWN) { update_address_ipv4(c, "\0\0\0\1", "\0\0"); + } + logger(LOG_DEBUG, "Proxy request granted"); replen = p + 1 - c->buffer; c->allow_request = ID; diff --git a/src/proxy.h b/src/proxy.h index a982943..a96fc3d 100644 --- a/src/proxy.h +++ b/src/proxy.h @@ -1,3 +1,6 @@ +#ifndef TINC_PROXY_H +#define TINC_PROXY_H + /* proxy.h -- header for proxy.c Copyright (C) 2015 Guus Sliepen @@ -17,9 +20,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_PROXY_H__ -#define __TINC_PROXY_H__ - #include "connection.h" typedef enum proxytype_t { @@ -38,6 +38,6 @@ extern char *proxyuser; extern char *proxypass; extern bool send_proxyrequest(struct connection_t *c); -extern int receive_proxy_meta(struct connection_t *c, int start, int lenin); +extern int receive_proxy_meta(struct connection_t *c); #endif diff --git a/src/raw_socket_device.c b/src/raw_socket_device.c index 427fb3f..f4ed694 100644 --- a/src/raw_socket_device.c +++ b/src/raw_socket_device.c @@ -33,7 +33,7 @@ #include "xalloc.h" #if defined(PF_PACKET) && defined(ETH_P_ALL) && defined(AF_PACKET) && defined(SIOCGIFINDEX) -static char *device_info; +static const char *device_info = "raw_socket"; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; @@ -42,17 +42,17 @@ static bool setup_device(void) { struct ifreq ifr; struct sockaddr_ll sa; - if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) + if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) { iface = xstrdup("eth0"); + } - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { device = xstrdup(iface); - - device_info = "raw socket"; + } if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) { logger(LOG_ERR, "Could not open %s: %s", device_info, - strerror(errno)); + strerror(errno)); return false; } @@ -97,7 +97,7 @@ static bool read_packet(vpn_packet_t *packet) { if((lenin = read(device_fd, packet->data, MTU)) <= 0) { logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); + device, strerror(errno)); return false; } @@ -106,18 +106,18 @@ static bool read_packet(vpn_packet_t *packet) { device_total_in += packet->len; ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, - device_info); + device_info); return true; } static bool write_packet(vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); if(write(device_fd, packet->data, packet->len) < 0) { logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, - strerror(errno)); + strerror(errno)); return false; } diff --git a/src/route.c b/src/route.c index 107ad74..8b7a13c 100644 --- a/src/route.c +++ b/src/route.c @@ -2,7 +2,7 @@ route.c -- routing Copyright (C) 2000-2005 Ivo Timmermans, 2000-2017 Guus Sliepen - 2015-2016 Vittorio Gambaletta + 2015-2016 Vittorio Gambaletta This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -68,12 +68,14 @@ static uint16_t inet_checksum(void *data, int len, uint16_t prevsum) { checksum += *p++; len -= 2; } - - if(len) - checksum += *(uint8_t *)p; - while(checksum >> 16) + if(len) { + checksum += *(uint8_t *)p; + } + + while(checksum >> 16) { checksum = (checksum & 0xFFFF) + (checksum >> 16); + } return ~checksum; } @@ -81,10 +83,11 @@ static uint16_t inet_checksum(void *data, int len, uint16_t prevsum) { static bool ratelimit(int frequency) { static time_t lasttime = 0; static int count = 0; - + if(lasttime == now) { - if(count >= frequency) + if(count >= frequency) { return true; + } } else { lasttime = now; count = 0; @@ -98,30 +101,32 @@ static bool checklength(node_t *source, vpn_packet_t *packet, length_t length) { if(packet->len < length) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname); return false; - } else + } else { return true; + } } static void swap_mac_addresses(vpn_packet_t *packet) { mac_t tmp; - memcpy(&tmp, &packet->data[0], sizeof tmp); - memcpy(&packet->data[0], &packet->data[6], sizeof tmp); - memcpy(&packet->data[6], &tmp, sizeof tmp); + memcpy(&tmp, &packet->data[0], sizeof(tmp)); + memcpy(&packet->data[0], &packet->data[6], sizeof(tmp)); + memcpy(&packet->data[6], &tmp, sizeof(tmp)); } /* RFC 792 */ static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, length_t ether_size, uint8_t type, uint8_t code) { - struct ip ip = {0}; - struct icmp icmp = {0}; - + struct ip ip = {}; + struct icmp icmp = {}; + struct in_addr ip_src; struct in_addr ip_dst; uint32_t oldlen; - if(ratelimit(3)) + if(ratelimit(3)) { return; - + } + /* Swap Ethernet source and destination addresses */ swap_mac_addresses(packet); @@ -131,45 +136,51 @@ static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, length_ memcpy(&ip, packet->data + ether_size, ip_size); /* Remember original source and destination */ - + ip_src = ip.ip_src; ip_dst = ip.ip_dst; /* Try to reply with an IP address assigned to the local machine */ - if (type == ICMP_TIME_EXCEEDED && code == ICMP_EXC_TTL) { + if(type == ICMP_TIME_EXCEEDED && code == ICMP_EXC_TTL) { int sockfd = socket(AF_INET, SOCK_DGRAM, 0); - if (sockfd != -1) { + + if(sockfd != -1) { struct sockaddr_in addr; memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; addr.sin_addr = ip.ip_src; - if (!connect(sockfd, (const struct sockaddr*) &addr, sizeof(addr))) { + + if(!connect(sockfd, (const struct sockaddr *) &addr, sizeof(addr))) { memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; socklen_t addrlen = sizeof(addr); - if (!getsockname(sockfd, (struct sockaddr*) &addr, &addrlen) && addrlen <= sizeof(addr)) { + + if(!getsockname(sockfd, (struct sockaddr *) &addr, &addrlen) && addrlen <= sizeof(addr)) { ip_dst = addr.sin_addr; } } + close(sockfd); } } oldlen = packet->len - ether_size; - if(type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) + if(type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { icmp.icmp_nextmtu = htons(packet->len - ether_size); + } - if(oldlen >= IP_MSS - ip_size - icmp_size) + if(oldlen >= IP_MSS - ip_size - icmp_size) { oldlen = IP_MSS - ip_size - icmp_size; - + } + /* Copy first part of original contents to ICMP message */ - + memmove(packet->data + ether_size + ip_size + icmp_size, packet->data + ether_size, oldlen); /* Fill in IPv4 header */ - + ip.ip_v = 4; ip.ip_hl = ip_size / 4; ip.ip_tos = 0; @@ -183,13 +194,13 @@ static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, length_ ip.ip_dst = ip_src; ip.ip_sum = inet_checksum(&ip, ip_size, ~0); - + /* Fill in ICMP header */ - + icmp.icmp_type = type; icmp.icmp_code = code; icmp.icmp_cksum = 0; - + icmp.icmp_cksum = inet_checksum(&icmp, icmp_size, ~0); icmp.icmp_cksum = inet_checksum(packet->data + ether_size + ip_size + icmp_size, oldlen, icmp.icmp_cksum); @@ -197,7 +208,7 @@ static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, length_ memcpy(packet->data + ether_size, &ip, ip_size); memcpy(packet->data + ether_size + ip_size, &icmp, icmp_size); - + packet->len = ether_size + ip_size + icmp_size + oldlen; send_packet(source, packet); @@ -207,19 +218,20 @@ static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, length_ static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, length_t ether_size, uint8_t type, uint8_t code) { struct ip6_hdr ip6; - struct icmp6_hdr icmp6 = {0}; - uint16_t checksum; + struct icmp6_hdr icmp6 = {}; + uint16_t checksum; struct { - struct in6_addr ip6_src; /* source address */ - struct in6_addr ip6_dst; /* destination address */ + struct in6_addr ip6_src; /* source address */ + struct in6_addr ip6_dst; /* destination address */ uint32_t length; uint32_t next; } pseudo; - if(ratelimit(3)) + if(ratelimit(3)) { return; - + } + /* Swap Ethernet source and destination addresses */ swap_mac_addresses(packet); @@ -229,45 +241,51 @@ static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, length_ memcpy(&ip6, packet->data + ether_size, ip6_size); /* Remember original source and destination */ - + pseudo.ip6_src = ip6.ip6_dst; pseudo.ip6_dst = ip6.ip6_src; /* Try to reply with an IP address assigned to the local machine */ - if (type == ICMP6_TIME_EXCEEDED && code == ICMP6_TIME_EXCEED_TRANSIT) { + if(type == ICMP6_TIME_EXCEEDED && code == ICMP6_TIME_EXCEED_TRANSIT) { int sockfd = socket(AF_INET6, SOCK_DGRAM, 0); - if (sockfd != -1) { + + if(sockfd != -1) { struct sockaddr_in6 addr; memset(&addr, 0, sizeof(addr)); addr.sin6_family = AF_INET6; addr.sin6_addr = ip6.ip6_src; - if (!connect(sockfd, (const struct sockaddr*) &addr, sizeof(addr))) { + + if(!connect(sockfd, (const struct sockaddr *) &addr, sizeof(addr))) { memset(&addr, 0, sizeof(addr)); addr.sin6_family = AF_INET6; socklen_t addrlen = sizeof(addr); - if (!getsockname(sockfd, (struct sockaddr*) &addr, &addrlen) && addrlen <= sizeof(addr)) { + + if(!getsockname(sockfd, (struct sockaddr *) &addr, &addrlen) && addrlen <= sizeof(addr)) { pseudo.ip6_src = addr.sin6_addr; } } + close(sockfd); } } pseudo.length = packet->len - ether_size; - if(type == ICMP6_PACKET_TOO_BIG) + if(type == ICMP6_PACKET_TOO_BIG) { icmp6.icmp6_mtu = htonl(pseudo.length); - - if(pseudo.length >= IP_MSS - ip6_size - icmp6_size) + } + + if(pseudo.length >= IP_MSS - ip6_size - icmp6_size) { pseudo.length = IP_MSS - ip6_size - icmp6_size; - + } + /* Copy first part of original contents to ICMP message */ - + memmove(packet->data + ether_size + ip6_size + icmp6_size, packet->data + ether_size, pseudo.length); /* Fill in IPv6 header */ - + ip6.ip6_flow = htonl(0x60000000UL); ip6.ip6_plen = htons(icmp6_size + pseudo.length); ip6.ip6_nxt = IPPROTO_ICMPV6; @@ -276,18 +294,18 @@ static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, length_ ip6.ip6_dst = pseudo.ip6_dst; /* Fill in ICMP header */ - + icmp6.icmp6_type = type; icmp6.icmp6_code = code; icmp6.icmp6_cksum = 0; /* Create pseudo header */ - + pseudo.length = htonl(icmp6_size + pseudo.length); pseudo.next = htonl(IPPROTO_ICMPV6); /* Generate checksum */ - + checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0); checksum = inet_checksum(&icmp6, icmp6_size, checksum); checksum = inet_checksum(packet->data + ether_size + ip6_size + icmp6_size, ntohl(pseudo.length) - icmp6_size, checksum); @@ -298,9 +316,9 @@ static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, length_ memcpy(packet->data + ether_size, &ip6, ip6_size); memcpy(packet->data + ether_size + ip6_size, &icmp6, icmp6_size); - + packet->len = ether_size + ip6_size + ntohl(pseudo.length); - + send_packet(source, packet); } @@ -313,56 +331,68 @@ static bool do_decrement_ttl(node_t *source, vpn_packet_t *packet) { ethlen += 4; } - switch (type) { - case ETH_P_IP: - if(!checklength(source, packet, ethlen + ip_size)) - return false; + switch(type) { + case ETH_P_IP: + if(!checklength(source, packet, ethlen + ip_size)) { + return false; + } - if(packet->data[ethlen + 8] <= 1) { - if(packet->data[ethlen + 11] != IPPROTO_ICMP || packet->data[ethlen + 32] != ICMP_TIME_EXCEEDED) - route_ipv4_unreachable(source, packet, ethlen, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL); - return false; + if(packet->data[ethlen + 8] <= 1) { + if(packet->data[ethlen + 11] != IPPROTO_ICMP || packet->data[ethlen + 32] != ICMP_TIME_EXCEEDED) { + route_ipv4_unreachable(source, packet, ethlen, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL); } - uint16_t old = packet->data[ethlen + 8] << 8 | packet->data[ethlen + 9]; - packet->data[ethlen + 8]--; - uint16_t new = packet->data[ethlen + 8] << 8 | packet->data[ethlen + 9]; + return false; + } - uint32_t checksum = packet->data[ethlen + 10] << 8 | packet->data[ethlen + 11]; - checksum += old + (~new & 0xFFFF); - while(checksum >> 16) - checksum = (checksum & 0xFFFF) + (checksum >> 16); - packet->data[ethlen + 10] = checksum >> 8; - packet->data[ethlen + 11] = checksum & 0xff; + uint16_t old = packet->data[ethlen + 8] << 8 | packet->data[ethlen + 9]; + packet->data[ethlen + 8]--; + uint16_t new = packet->data[ethlen + 8] << 8 | packet->data[ethlen + 9]; - return true; + uint32_t checksum = packet->data[ethlen + 10] << 8 | packet->data[ethlen + 11]; + checksum += old + (~new & 0xFFFF); - case ETH_P_IPV6: - if(!checklength(source, packet, ethlen + ip6_size)) - return false; + while(checksum >> 16) { + checksum = (checksum & 0xFFFF) + (checksum >> 16); + } - if(packet->data[ethlen + 7] <= 1) { - if(packet->data[ethlen + 6] != IPPROTO_ICMPV6 || packet->data[ethlen + 40] != ICMP6_TIME_EXCEEDED) - route_ipv6_unreachable(source, packet, ethlen, ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT); - return false; + packet->data[ethlen + 10] = checksum >> 8; + packet->data[ethlen + 11] = checksum & 0xff; + + return true; + + case ETH_P_IPV6: + if(!checklength(source, packet, ethlen + ip6_size)) { + return false; + } + + if(packet->data[ethlen + 7] <= 1) { + if(packet->data[ethlen + 6] != IPPROTO_ICMPV6 || packet->data[ethlen + 40] != ICMP6_TIME_EXCEEDED) { + route_ipv6_unreachable(source, packet, ethlen, ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT); } - packet->data[ethlen + 7]--; + return false; + } - return true; + packet->data[ethlen + 7]--; - default: - return true; + return true; + + default: + return true; } } static void clamp_mss(const node_t *source, const node_t *via, vpn_packet_t *packet) { - if(!source || !via || !(via->options & OPTION_CLAMP_MSS)) + if(!source || !via || !(via->options & OPTION_CLAMP_MSS)) { return; + } uint16_t mtu = source->mtu; - if(via != myself && via->mtu < mtu) + + if(via != myself && via->mtu < mtu) { mtu = via->mtu; + } /* Find TCP header */ int start = ether_size; @@ -373,53 +403,62 @@ static void clamp_mss(const node_t *source, const node_t *via, vpn_packet_t *pac type = packet->data[16] << 8 | packet->data[17]; } - if(type == ETH_P_IP && packet->data[start + 9] == 6) + if(type == ETH_P_IP && packet->data[start + 9] == 6) { start += (packet->data[start] & 0xf) * 4; - else if(type == ETH_P_IPV6 && packet->data[start + 6] == 6) + } else if(type == ETH_P_IPV6 && packet->data[start + 6] == 6) { start += 40; - else + } else { return; + } - if(packet->len <= start + 20) + if(packet->len <= start + 20) { return; + } /* Use data offset field to calculate length of options field */ int len = ((packet->data[start + 12] >> 4) - 5) * 4; - if(packet->len < start + 20 + len) + if(packet->len < start + 20 + len) { return; + } /* Search for MSS option header */ for(int i = 0; i < len;) { - if(packet->data[start + 20 + i] == 0) + if(packet->data[start + 20 + i] == 0) { break; + } if(packet->data[start + 20 + i] == 1) { i++; continue; } - if(i > len - 2 || i > len - packet->data[start + 21 + i]) + if(i > len - 2 || i > len - packet->data[start + 21 + i]) { break; + } if(packet->data[start + 20 + i] != 2) { - if(packet->data[start + 21 + i] < 2) + if(packet->data[start + 21 + i] < 2) { break; + } + i += packet->data[start + 21 + i]; continue; } - if(packet->data[start + 21] != 4) + if(packet->data[start + 21] != 4) { break; + } /* Found it */ uint16_t oldmss = packet->data[start + 22 + i] << 8 | packet->data[start + 23 + i]; uint16_t newmss = mtu - start - 20; uint32_t csum = packet->data[start + 16] << 8 | packet->data[start + 17]; - if(oldmss <= newmss) + if(oldmss <= newmss) { break; - + } + ifdebug(TRAFFIC) logger(LOG_INFO, "Clamping MSS of packet from %s to %s to %d", source->name, via->name, newmss); /* Update the MSS value and the checksum */ @@ -436,7 +475,7 @@ static void clamp_mss(const node_t *source, const node_t *via, vpn_packet_t *pac break; } } - + static void learn_mac(mac_t *address) { subnet_t *subnet; avl_node_t *node; @@ -448,8 +487,8 @@ static void learn_mac(mac_t *address) { if(!subnet) { ifdebug(TRAFFIC) logger(LOG_INFO, "Learned new MAC address %x:%x:%x:%x:%x:%x", - address->x[0], address->x[1], address->x[2], address->x[3], - address->x[4], address->x[5]); + address->x[0], address->x[1], address->x[2], address->x[3], + address->x[4], address->x[5]); subnet = new_subnet(); subnet->type = SUBNET_MAC; @@ -463,13 +502,16 @@ static void learn_mac(mac_t *address) { for(node = connection_tree->head; node; node = node->next) { c = node->data; - if(c->status.active) + + if(c->status.active) { send_add_subnet(c, subnet); + } } } - if(subnet->expires) + if(subnet->expires) { subnet->expires = now + macexpire; + } } void age_subnets(void) { @@ -480,17 +522,22 @@ void age_subnets(void) { for(node = myself->subnet_tree->head; node; node = next) { next = node->next; s = node->data; + if(s->expires && s->expires <= now) { ifdebug(TRAFFIC) { char netstr[MAXNETSTR]; - if(net2str(netstr, sizeof netstr, s)) + + if(net2str(netstr, sizeof(netstr), s)) { logger(LOG_INFO, "Subnet %s expired", netstr); + } } for(node2 = connection_tree->head; node2; node2 = node2->next) { c = node2->data; - if(c->status.active) + + if(c->status.active) { send_del_subnet(c, s); + } } subnet_update(myself, s, false); @@ -501,8 +548,9 @@ void age_subnets(void) { static void route_broadcast(node_t *source, vpn_packet_t *packet) { if(decrement_ttl && source != myself) - if(!do_decrement_ttl(source, packet)) + if(!do_decrement_ttl(source, packet)) { return; + } broadcast_packet(source, packet); } @@ -515,13 +563,14 @@ static void fragment_ipv4_packet(node_t *dest, vpn_packet_t *packet, length_t et int len, maxlen, todo; uint8_t *offset; uint16_t ip_off, origf; - + memcpy(&ip, packet->data + ether_size, ip_size); fragment.priority = packet->priority; - if(ip.ip_hl != ip_size / 4) + if(ip.ip_hl != ip_size / 4) { return; - + } + todo = ntohs(ip.ip_len) - ip_size; if(ether_size + ip_size + todo != packet->len) { @@ -536,7 +585,7 @@ static void fragment_ipv4_packet(node_t *dest, vpn_packet_t *packet, length_t et ip_off = ntohs(ip.ip_off); origf = ip_off & ~IP_OFFMASK; ip_off &= IP_OFFMASK; - + while(todo) { len = todo > maxlen ? maxlen : todo; memcpy(fragment.data + ether_size + ip_size, offset, len); @@ -554,7 +603,7 @@ static void fragment_ipv4_packet(node_t *dest, vpn_packet_t *packet, length_t et send_packet(dest, &fragment); ip_off += len / 8; - } + } } static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) { @@ -562,38 +611,42 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) { node_t *via; ipv4_t dest; - memcpy(&dest, &packet->data[30], sizeof dest); + memcpy(&dest, &packet->data[30], sizeof(dest)); subnet = lookup_subnet_ipv4(&dest); if(!subnet) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown IPv4 destination address %d.%d.%d.%d", - source->name, source->hostname, - dest.x[0], - dest.x[1], - dest.x[2], - dest.x[3]); + source->name, source->hostname, + dest.x[0], + dest.x[1], + dest.x[2], + dest.x[3]); route_ipv4_unreachable(source, packet, ether_size, ICMP_DEST_UNREACH, ICMP_NET_UNKNOWN); return; } - + if(subnet->owner == source) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname); return; } - if(!subnet->owner->status.reachable) + if(!subnet->owner->status.reachable) { return route_ipv4_unreachable(source, packet, ether_size, ICMP_DEST_UNREACH, ICMP_NET_UNREACH); + } - if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself) + if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself) { return route_ipv4_unreachable(source, packet, ether_size, ICMP_DEST_UNREACH, ICMP_NET_ANO); + } if(decrement_ttl && source != myself && subnet->owner != myself) - if(!do_decrement_ttl(source, packet)) + if(!do_decrement_ttl(source, packet)) { return; + } - if(priorityinheritance) + if(priorityinheritance) { packet->priority = packet->data[15]; + } via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via; @@ -601,12 +654,14 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname); return; } - - if(directonly && subnet->owner != via) + + if(directonly && subnet->owner != via) { return route_ipv4_unreachable(source, packet, ether_size, ICMP_DEST_UNREACH, ICMP_NET_ANO); + } if(via && packet->len > MAX(via->mtu, 590) && via != myself) { ifdebug(TRAFFIC) logger(LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu); + if(packet->data[20] & 0x40) { packet->len = MAX(via->mtu, 590); route_ipv4_unreachable(source, packet, ether_size, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED); @@ -618,22 +673,24 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) { } clamp_mss(source, via, packet); - + send_packet(subnet->owner, packet); } static void route_ipv4(node_t *source, vpn_packet_t *packet) { - if(!checklength(source, packet, ether_size + ip_size)) + if(!checklength(source, packet, ether_size + ip_size)) { return; + } if(broadcast_mode && (((packet->data[30] & 0xf0) == 0xe0) || ( - packet->data[30] == 255 && - packet->data[31] == 255 && - packet->data[32] == 255 && - packet->data[33] == 255))) + packet->data[30] == 255 && + packet->data[31] == 255 && + packet->data[32] == 255 && + packet->data[33] == 255))) { route_broadcast(source, packet); - else + } else { route_ipv4_unicast(source, packet); + } } static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) { @@ -641,20 +698,20 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) { node_t *via; ipv6_t dest; - memcpy(&dest, &packet->data[38], sizeof dest); + memcpy(&dest, &packet->data[38], sizeof(dest)); subnet = lookup_subnet_ipv6(&dest); if(!subnet) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown IPv6 destination address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", - source->name, source->hostname, - ntohs(dest.x[0]), - ntohs(dest.x[1]), - ntohs(dest.x[2]), - ntohs(dest.x[3]), - ntohs(dest.x[4]), - ntohs(dest.x[5]), - ntohs(dest.x[6]), - ntohs(dest.x[7])); + source->name, source->hostname, + ntohs(dest.x[0]), + ntohs(dest.x[1]), + ntohs(dest.x[2]), + ntohs(dest.x[3]), + ntohs(dest.x[4]), + ntohs(dest.x[5]), + ntohs(dest.x[6]), + ntohs(dest.x[7])); route_ipv6_unreachable(source, packet, ether_size, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR); return; @@ -665,28 +722,33 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) { return; } - if(!subnet->owner->status.reachable) + if(!subnet->owner->status.reachable) { return route_ipv6_unreachable(source, packet, ether_size, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE); + } - if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself) + if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself) { return route_ipv6_unreachable(source, packet, ether_size, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN); + } if(decrement_ttl && source != myself && subnet->owner != myself) - if(!do_decrement_ttl(source, packet)) + if(!do_decrement_ttl(source, packet)) { return; + } - if(priorityinheritance) + if(priorityinheritance) { packet->priority = ((packet->data[14] & 0x0f) << 4) | (packet->data[15] >> 4); + } via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via; - + if(via == source) { ifdebug(TRAFFIC) logger(LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname); return; } - - if(directonly && subnet->owner != via) + + if(directonly && subnet->owner != via) { return route_ipv6_unreachable(source, packet, ether_size, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN); + } if(via && packet->len > MAX(via->mtu, 1294) && via != myself) { ifdebug(TRAFFIC) logger(LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu); @@ -696,7 +758,7 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) { } clamp_mss(source, via, packet); - + send_packet(subnet->owner, packet); } @@ -711,17 +773,18 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) { bool has_opt; struct { - struct in6_addr ip6_src; /* source address */ - struct in6_addr ip6_dst; /* destination address */ + struct in6_addr ip6_src; /* source address */ + struct in6_addr ip6_dst; /* destination address */ uint32_t length; uint32_t next; } pseudo; - if(!checklength(source, packet, ether_size + ip6_size + ns_size)) + if(!checklength(source, packet, ether_size + ip6_size + ns_size)) { return; - + } + has_opt = packet->len >= ether_size + ip6_size + ns_size + opt_size + ETH_ALEN; - + if(source != myself) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Got neighbor solicitation request from %s (%s) while in router mode!", source->name, source->hostname); return; @@ -731,18 +794,21 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) { memcpy(&ip6, packet->data + ether_size, ip6_size); memcpy(&ns, packet->data + ether_size + ip6_size, ns_size); - if(has_opt) + + if(has_opt) { memcpy(&opt, packet->data + ether_size + ip6_size + ns_size, opt_size); + } /* First, snatch the source address from the neighbor solicitation packet */ - if(overwrite_mac) + if(overwrite_mac) { memcpy(mymac.x, packet->data + ETH_ALEN, ETH_ALEN); + } /* Check if this is a valid neighbor solicitation request */ if(ns.nd_ns_hdr.icmp6_type != ND_NEIGHBOR_SOLICIT || - (has_opt && opt.nd_opt_type != ND_OPT_SOURCE_LINKADDR)) { + (has_opt && opt.nd_opt_type != ND_OPT_SOURCE_LINKADDR)) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: received unknown type neighbor solicitation request"); return; } @@ -751,16 +817,20 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) { pseudo.ip6_src = ip6.ip6_src; pseudo.ip6_dst = ip6.ip6_dst; - if(has_opt) + + if(has_opt) { pseudo.length = htonl(ns_size + opt_size + ETH_ALEN); - else + } else { pseudo.length = htonl(ns_size); + } + pseudo.next = htonl(IPPROTO_ICMPV6); /* Generate checksum */ checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0); checksum = inet_checksum(&ns, ns_size, checksum); + if(has_opt) { checksum = inet_checksum(&opt, opt_size, checksum); checksum = inet_checksum(packet->data + ether_size + ip6_size + ns_size + opt_size, ETH_ALEN, checksum); @@ -777,57 +847,64 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) { if(!subnet) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: neighbor solicitation request for unknown address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", - ntohs(((uint16_t *) &ns.nd_ns_target)[0]), - ntohs(((uint16_t *) &ns.nd_ns_target)[1]), - ntohs(((uint16_t *) &ns.nd_ns_target)[2]), - ntohs(((uint16_t *) &ns.nd_ns_target)[3]), - ntohs(((uint16_t *) &ns.nd_ns_target)[4]), - ntohs(((uint16_t *) &ns.nd_ns_target)[5]), - ntohs(((uint16_t *) &ns.nd_ns_target)[6]), - ntohs(((uint16_t *) &ns.nd_ns_target)[7])); + ntohs(((uint16_t *) &ns.nd_ns_target)[0]), + ntohs(((uint16_t *) &ns.nd_ns_target)[1]), + ntohs(((uint16_t *) &ns.nd_ns_target)[2]), + ntohs(((uint16_t *) &ns.nd_ns_target)[3]), + ntohs(((uint16_t *) &ns.nd_ns_target)[4]), + ntohs(((uint16_t *) &ns.nd_ns_target)[5]), + ntohs(((uint16_t *) &ns.nd_ns_target)[6]), + ntohs(((uint16_t *) &ns.nd_ns_target)[7])); return; } /* Check if it is for our own subnet */ - if(subnet->owner == myself) - return; /* silently ignore */ + if(subnet->owner == myself) { + return; /* silently ignore */ + } if(decrement_ttl) - if(!do_decrement_ttl(source, packet)) + if(!do_decrement_ttl(source, packet)) { return; + } /* Create neighbor advertation reply */ - memcpy(packet->data, packet->data + ETH_ALEN, ETH_ALEN); /* copy destination address */ - packet->data[ETH_ALEN * 2 - 1] ^= 0xFF; /* mangle source address so it looks like it's not from us */ + memcpy(packet->data, packet->data + ETH_ALEN, ETH_ALEN); /* copy destination address */ + packet->data[ETH_ALEN * 2 - 1] ^= 0xFF; /* mangle source address so it looks like it's not from us */ - ip6.ip6_dst = ip6.ip6_src; /* swap destination and source protocoll address */ + ip6.ip6_dst = ip6.ip6_src; /* swap destination and source protocoll address */ ip6.ip6_src = ns.nd_ns_target; - if(has_opt) - memcpy(packet->data + ether_size + ip6_size + ns_size + opt_size, packet->data + ETH_ALEN, ETH_ALEN); /* add fake source hard addr */ + if(has_opt) { + memcpy(packet->data + ether_size + ip6_size + ns_size + opt_size, packet->data + ETH_ALEN, ETH_ALEN); /* add fake source hard addr */ + } ns.nd_ns_cksum = 0; ns.nd_ns_type = ND_NEIGHBOR_ADVERT; - ns.nd_ns_reserved = htonl(0x40000000UL); /* Set solicited flag */ + ns.nd_ns_reserved = htonl(0x40000000UL); /* Set solicited flag */ opt.nd_opt_type = ND_OPT_TARGET_LINKADDR; /* Create pseudo header */ pseudo.ip6_src = ip6.ip6_src; pseudo.ip6_dst = ip6.ip6_dst; - if(has_opt) + + if(has_opt) { pseudo.length = htonl(ns_size + opt_size + ETH_ALEN); - else + } else { pseudo.length = htonl(ns_size); + } + pseudo.next = htonl(IPPROTO_ICMPV6); /* Generate checksum */ checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0); checksum = inet_checksum(&ns, ns_size, checksum); + if(has_opt) { checksum = inet_checksum(&opt, opt_size, checksum); checksum = inet_checksum(packet->data + ether_size + ip6_size + ns_size + opt_size, ETH_ALEN, checksum); @@ -839,25 +916,29 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) { memcpy(packet->data + ether_size, &ip6, ip6_size); memcpy(packet->data + ether_size + ip6_size, &ns, ns_size); - if(has_opt) + + if(has_opt) { memcpy(packet->data + ether_size + ip6_size + ns_size, &opt, opt_size); + } send_packet(source, packet); } static void route_ipv6(node_t *source, vpn_packet_t *packet) { - if(!checklength(source, packet, ether_size + ip6_size)) + if(!checklength(source, packet, ether_size + ip6_size)) { return; + } if(packet->data[20] == IPPROTO_ICMPV6 && checklength(source, packet, ether_size + ip6_size + icmp6_size) && packet->data[54] == ND_NEIGHBOR_SOLICIT) { route_neighborsol(source, packet); return; } - if(broadcast_mode && packet->data[38] == 255) + if(broadcast_mode && packet->data[38] == 255) { route_broadcast(source, packet); - else + } else { route_ipv6_unicast(source, packet); + } } /* RFC 826 */ @@ -867,8 +948,9 @@ static void route_arp(node_t *source, vpn_packet_t *packet) { subnet_t *subnet; struct in_addr addr; - if(!checklength(source, packet, ether_size + arp_size)) + if(!checklength(source, packet, ether_size + arp_size)) { return; + } if(source != myself) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Got ARP request from %s (%s) while in router mode!", source->name, source->hostname); @@ -877,8 +959,9 @@ static void route_arp(node_t *source, vpn_packet_t *packet) { /* First, snatch the source address from the ARP packet */ - if(overwrite_mac) + if(overwrite_mac) { memcpy(mymac.x, packet->data + ETH_ALEN, ETH_ALEN); + } /* Copy headers from packet to structs on the stack */ @@ -887,7 +970,7 @@ static void route_arp(node_t *source, vpn_packet_t *packet) { /* Check if this is a valid ARP request */ if(ntohs(arp.arp_hrd) != ARPHRD_ETHER || ntohs(arp.arp_pro) != ETH_P_IP || - arp.arp_hln != ETH_ALEN || arp.arp_pln != sizeof(addr) || ntohs(arp.arp_op) != ARPOP_REQUEST) { + arp.arp_hln != ETH_ALEN || arp.arp_pln != sizeof(addr) || ntohs(arp.arp_op) != ARPOP_REQUEST) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: received unknown type ARP request"); return; } @@ -898,29 +981,31 @@ static void route_arp(node_t *source, vpn_packet_t *packet) { if(!subnet) { ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: ARP request for unknown address %d.%d.%d.%d", - arp.arp_tpa[0], arp.arp_tpa[1], arp.arp_tpa[2], - arp.arp_tpa[3]); + arp.arp_tpa[0], arp.arp_tpa[1], arp.arp_tpa[2], + arp.arp_tpa[3]); return; } /* Check if it is for our own subnet */ - if(subnet->owner == myself) - return; /* silently ignore */ + if(subnet->owner == myself) { + return; /* silently ignore */ + } if(decrement_ttl) - if(!do_decrement_ttl(source, packet)) + if(!do_decrement_ttl(source, packet)) { return; + } - memcpy(packet->data, packet->data + ETH_ALEN, ETH_ALEN); /* copy destination address */ - packet->data[ETH_ALEN * 2 - 1] ^= 0xFF; /* mangle source address so it looks like it's not from us */ + memcpy(packet->data, packet->data + ETH_ALEN, ETH_ALEN); /* copy destination address */ + packet->data[ETH_ALEN * 2 - 1] ^= 0xFF; /* mangle source address so it looks like it's not from us */ - memcpy(&addr, arp.arp_tpa, sizeof(addr)); /* save protocol addr */ - memcpy(arp.arp_tpa, arp.arp_spa, sizeof(addr)); /* swap destination and source protocol address */ - memcpy(arp.arp_spa, &addr, sizeof(addr)); /* ... */ + memcpy(&addr, arp.arp_tpa, sizeof(addr)); /* save protocol addr */ + memcpy(arp.arp_tpa, arp.arp_spa, sizeof(addr)); /* swap destination and source protocol address */ + memcpy(arp.arp_spa, &addr, sizeof(addr)); /* ... */ - memcpy(arp.arp_tha, arp.arp_sha, ETH_ALEN); /* set target hard/proto addr */ - memcpy(arp.arp_sha, packet->data + ETH_ALEN, ETH_ALEN); /* add fake source hard addr */ + memcpy(arp.arp_tha, arp.arp_sha, ETH_ALEN); /* set target hard/proto addr */ + memcpy(arp.arp_sha, packet->data + ETH_ALEN, ETH_ALEN); /* add fake source hard addr */ arp.arp_op = htons(ARPOP_REPLY); /* Copy structs on stack back to packet */ @@ -938,13 +1023,13 @@ static void route_mac(node_t *source, vpn_packet_t *packet) { if(source == myself) { mac_t src; - memcpy(&src, &packet->data[6], sizeof src); + memcpy(&src, &packet->data[6], sizeof(src)); learn_mac(&src); } /* Lookup destination address */ - memcpy(&dest, &packet->data[0], sizeof dest); + memcpy(&dest, &packet->data[0], sizeof(dest)); subnet = lookup_subnet_mac(NULL, &dest); if(!subnet) { @@ -957,29 +1042,33 @@ static void route_mac(node_t *source, vpn_packet_t *packet) { return; } - if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself) + if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself) { return; + } if(decrement_ttl && source != myself && subnet->owner != myself) - if(!do_decrement_ttl(source, packet)) + if(!do_decrement_ttl(source, packet)) { return; + } uint16_t type = packet->data[12] << 8 | packet->data[13]; if(priorityinheritance) { - if(type == ETH_P_IP && packet->len >= ether_size + ip_size) + if(type == ETH_P_IP && packet->len >= ether_size + ip_size) { packet->priority = packet->data[15]; - else if(type == ETH_P_IPV6 && packet->len >= ether_size + ip6_size) + } else if(type == ETH_P_IPV6 && packet->len >= ether_size + ip6_size) { packet->priority = ((packet->data[14] & 0x0f) << 4) | (packet->data[15] >> 4); + } } // Handle packets larger than PMTU node_t *via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via; - if(directonly && subnet->owner != via) + if(directonly && subnet->owner != via) { return; - + } + if(via && packet->len > via->mtu && via != myself) { ifdebug(TRAFFIC) logger(LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu); length_t ethlen = 14; @@ -996,6 +1085,7 @@ static void route_mac(node_t *source, vpn_packet_t *packet) { } else { fragment_ipv4_packet(via, packet, ethlen); } + return; } else if(type == ETH_P_IPV6 && packet->len > 1280 + ethlen) { packet->len = via->mtu; @@ -1005,7 +1095,7 @@ static void route_mac(node_t *source, vpn_packet_t *packet) { } clamp_mss(source, via, packet); - + send_packet(subnet->owner, packet); } @@ -1015,40 +1105,40 @@ void route(node_t *source, vpn_packet_t *packet) { return; } - if(!checklength(source, packet, ether_size)) + if(!checklength(source, packet, ether_size)) { return; + } - switch (routing_mode) { - case RMODE_ROUTER: - { - uint16_t type = packet->data[12] << 8 | packet->data[13]; + switch(routing_mode) { + case RMODE_ROUTER: { + uint16_t type = packet->data[12] << 8 | packet->data[13]; - switch (type) { - case ETH_P_ARP: - route_arp(source, packet); - break; - - case ETH_P_IP: - route_ipv4(source, packet); - break; - - case ETH_P_IPV6: - route_ipv6(source, packet); - break; - - default: - ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown type %hx", source->name, source->hostname, type); - break; - } - } + switch(type) { + case ETH_P_ARP: + route_arp(source, packet); break; - case RMODE_SWITCH: - route_mac(source, packet); + case ETH_P_IP: + route_ipv4(source, packet); break; - case RMODE_HUB: - route_broadcast(source, packet); + case ETH_P_IPV6: + route_ipv6(source, packet); break; + + default: + ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown type %hx", source->name, source->hostname, type); + break; + } + } + break; + + case RMODE_SWITCH: + route_mac(source, packet); + break; + + case RMODE_HUB: + route_broadcast(source, packet); + break; } } diff --git a/src/route.h b/src/route.h index 7b45e76..5b9e808 100644 --- a/src/route.h +++ b/src/route.h @@ -1,7 +1,10 @@ +#ifndef TINC_ROUTE_H +#define TINC_ROUTE_H + /* route.h -- header file for route.c Copyright (C) 2000-2005 Ivo Timmermans - 2000-2012 Guus Sliepen + 2000-2012 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_ROUTE_H__ -#define __TINC_ROUTE_H__ - #include "net.h" #include "node.h" @@ -54,6 +54,6 @@ extern int macexpire; extern mac_t mymac; extern void age_subnets(void); -extern void route(struct node_t *, struct vpn_packet_t *); +extern void route(struct node_t *source, struct vpn_packet_t *packet); -#endif /* __TINC_ROUTE_H__ */ +#endif diff --git a/src/solaris/device.c b/src/solaris/device.c index 0074615..fa2e6e6 100644 --- a/src/solaris/device.c +++ b/src/solaris/device.c @@ -53,7 +53,7 @@ static int if_fd = -1; static int ip_fd = -1; char *device = NULL; char *iface = NULL; -static char *device_info = NULL; +static const char *device_info = NULL; uint64_t device_total_in = 0; uint64_t device_total_out = 0; @@ -62,33 +62,37 @@ static bool setup_device(void) { char *type; if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { - if(routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { device = xstrdup(DEFAULT_TUN_DEVICE); - else + } else { device = xstrdup(DEFAULT_TAP_DEVICE); + } } if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { if(!strcasecmp(type, "tun")) /* use default */; - else if(!strcasecmp(type, "tap")) + else if(!strcasecmp(type, "tap")) { device_type = DEVICE_TYPE_TAP; - else { + } else { logger(LOG_ERR, "Unknown device type %s!", type); return false; } } else { - if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) + if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) { device_type = DEVICE_TYPE_TAP; + } } - if(device_type == DEVICE_TYPE_TUN) + if(device_type == DEVICE_TYPE_TUN) { device_info = "Solaris tun device"; - else + } else { device_info = "Solaris tap device"; + } - if(device_type == DEVICE_TYPE_TAP && routing_mode == RMODE_ROUTER) + if(device_type == DEVICE_TYPE_TAP && routing_mode == RMODE_ROUTER) { overwrite_mac = true; + } /* The following is black magic copied from OpenVPN. */ @@ -107,29 +111,35 @@ static bool setup_device(void) { char *ptr = device; get_config_string(lookup_config(config_tree, "Interface"), &ptr); - while(*ptr && !isdigit(*ptr)) + while(*ptr && !isdigit(*ptr)) { ptr++; + } + int ppa = atoi(ptr); /* Assign a new PPA and get its unit number. */ struct strioctl strioc_ppa = { .ic_cmd = TUNNEWPPA, - .ic_len = sizeof ppa, - .ic_dp = (char *)&ppa, + .ic_len = sizeof(ppa), + .ic_dp = (char *) &ppa, }; if(!*ptr) { /* no number given, try dynamic */ bool found = false; + while(!found && ppa < 64) { int new_ppa = ioctl(device_fd, I_STR, &strioc_ppa); + if(new_ppa >= 0) { ppa = new_ppa; found = true; break; } + ppa++; } + if(!found) { logger(LOG_ERR, "Could not find free PPA for %s %s!", device_info, device); return false; @@ -156,7 +166,8 @@ static bool setup_device(void) { { /* Remove muxes just in case they are left over from a crashed tincd */ struct lifreq ifr = {}; - strncpy(ifr.lifr_name, iface, sizeof ifr.lifr_name); + strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name)); + if(ioctl(ip_fd, SIOCGLIFMUXID, &ifr) >= 0) { int muxid = ifr.lifr_arp_muxid; ioctl(ip_fd, I_PUNLINK, muxid); @@ -191,6 +202,7 @@ static bool setup_device(void) { logger(LOG_ERR, "Could not set PPA %d on %s %s!", ppa, device_info, device); return false; } + if(ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) { logger(LOG_ERR, "Could not set flags on %s %s!", device_info, device); return false; @@ -204,8 +216,9 @@ static bool setup_device(void) { /* Pop any modules on the stream */ while(true) { - if(ioctl(ip_fd, I_POP, NULL) < 0) + if(ioctl(ip_fd, I_POP, NULL) < 0) { break; + } } /* Push arp module to ip_fd */ @@ -229,8 +242,8 @@ static bool setup_device(void) { /* Set ifname to arp */ struct strioctl strioc_if = { .ic_cmd = SIOCSLIFNAME, - .ic_len = sizeof ifr, - .ic_dp = (char *)&ifr, + .ic_len = sizeof(ifr), + .ic_dp = (char *) &ifr, }; if(ioctl(arp_fd, I_STR, &strioc_if) < 0) { @@ -251,12 +264,16 @@ static bool setup_device(void) { logger(LOG_ERR, "Could not link %s %s to ARP", device_info, device); return false; } + close(arp_fd); } struct lifreq ifr = {}; + strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name)); + ifr.lifr_ip_muxid = ip_muxid; + if(device_type == DEVICE_TYPE_TAP) { ifr.lifr_arp_muxid = arp_muxid; } @@ -265,6 +282,7 @@ static bool setup_device(void) { if(device_type == DEVICE_TYPE_TAP) { ioctl(ip_fd, I_PUNLINK, arp_muxid); } + ioctl(ip_fd, I_PUNLINK, ip_muxid); logger(LOG_ERR, "Could not set multiplexor id for %s %s", device_info, device); return false; @@ -285,7 +303,8 @@ static bool setup_device(void) { static void close_device(void) { if(iface) { struct lifreq ifr = {}; - strncpy(ifr.lifr_name, iface, sizeof ifr.lifr_name); + strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name)); + if(ioctl(ip_fd, SIOCGLIFMUXID, &ifr) >= 0) { int muxid = ifr.lifr_arp_muxid; ioctl(ip_fd, I_PUNLINK, muxid); @@ -307,47 +326,49 @@ static bool read_packet(vpn_packet_t *packet) { int f = 0; switch(device_type) { - case DEVICE_TYPE_TUN: - sbuf.maxlen = MTU - 14; - sbuf.buf = (char *)packet->data + 14; + case DEVICE_TYPE_TUN: + sbuf.maxlen = MTU - 14; + sbuf.buf = (char *)packet->data + 14; - if((result = getmsg(device_fd, NULL, &sbuf, &f)) < 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); - return false; - } + if((result = getmsg(device_fd, NULL, &sbuf, &f)) < 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); + return false; + } - switch(packet->data[14] >> 4) { - case 4: - packet->data[12] = 0x08; - packet->data[13] = 0x00; - break; - case 6: - packet->data[12] = 0x86; - packet->data[13] = 0xDD; - break; - default: - ifdebug(TRAFFIC) logger(LOG_ERR, "Unknown IP version %d while reading packet from %s %s", packet->data[14] >> 4, device_info, device); - return false; - } - - memset(packet->data, 0, 12); - packet->len = sbuf.len + 14; + switch(packet->data[14] >> 4) { + case 4: + packet->data[12] = 0x08; + packet->data[13] = 0x00; break; - case DEVICE_TYPE_TAP: - sbuf.maxlen = MTU; - sbuf.buf = (char *)packet->data; - - if((result = getmsg(device_fd, NULL, &sbuf, &f)) < 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); - return false; - } - - packet->len = sbuf.len; + case 6: + packet->data[12] = 0x86; + packet->data[13] = 0xDD; break; default: - abort(); + ifdebug(TRAFFIC) logger(LOG_ERR, "Unknown IP version %d while reading packet from %s %s", packet->data[14] >> 4, device_info, device); + return false; + } + + memset(packet->data, 0, 12); + packet->len = sbuf.len + 14; + break; + + case DEVICE_TYPE_TAP: + sbuf.maxlen = MTU; + sbuf.buf = (char *)packet->data; + + if((result = getmsg(device_fd, NULL, &sbuf, &f)) < 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); + return false; + } + + packet->len = sbuf.len; + break; + + default: + abort(); } device_total_in += packet->len; @@ -363,28 +384,30 @@ static bool write_packet(vpn_packet_t *packet) { struct strbuf sbuf; switch(device_type) { - case DEVICE_TYPE_TUN: - sbuf.len = packet->len - 14; - sbuf.buf = (char *)packet->data + 14; + case DEVICE_TYPE_TUN: + sbuf.len = packet->len - 14; + sbuf.buf = (char *)packet->data + 14; - if(putmsg(device_fd, NULL, &sbuf, 0) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); - return false; - } - break; + if(putmsg(device_fd, NULL, &sbuf, 0) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); + return false; + } - case DEVICE_TYPE_TAP: - sbuf.len = packet->len; - sbuf.buf = (char *)packet->data; + break; - if(putmsg(device_fd, NULL, &sbuf, 0) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); - return false; - } - break; + case DEVICE_TYPE_TAP: + sbuf.len = packet->len; + sbuf.buf = (char *)packet->data; - default: - abort(); + if(putmsg(device_fd, NULL, &sbuf, 0) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); + return false; + } + + break; + + default: + abort(); } device_total_out += packet->len; diff --git a/src/subnet.c b/src/subnet.c index b4a636b..b4c7913 100644 --- a/src/subnet.c +++ b/src/subnet.c @@ -65,13 +65,15 @@ static int subnet_compare_mac(const subnet_t *a, const subnet_t *b) { result = memcmp(&a->net.mac.address, &b->net.mac.address, sizeof(mac_t)); - if(result) + if(result) { return result; - + } + result = a->weight - b->weight; - if(result || !a->owner || !b->owner) + if(result || !a->owner || !b->owner) { return result; + } return strcmp(a->owner->name, b->owner->name); } @@ -81,18 +83,21 @@ static int subnet_compare_ipv4(const subnet_t *a, const subnet_t *b) { result = b->net.ipv4.prefixlength - a->net.ipv4.prefixlength; - if(result) + if(result) { return result; + } result = memcmp(&a->net.ipv4.address, &b->net.ipv4.address, sizeof(ipv4_t)); - if(result) + if(result) { return result; - + } + result = a->weight - b->weight; - if(result || !a->owner || !b->owner) + if(result || !a->owner || !b->owner) { return result; + } return strcmp(a->owner->name, b->owner->name); } @@ -102,18 +107,21 @@ static int subnet_compare_ipv6(const subnet_t *a, const subnet_t *b) { result = b->net.ipv6.prefixlength - a->net.ipv6.prefixlength; - if(result) + if(result) { return result; - + } + result = memcmp(&a->net.ipv6.address, &b->net.ipv6.address, sizeof(ipv6_t)); - if(result) + if(result) { return result; - + } + result = a->weight - b->weight; - if(result || !a->owner || !b->owner) + if(result || !a->owner || !b->owner) { return result; + } return strcmp(a->owner->name, b->owner->name); } @@ -123,19 +131,23 @@ int subnet_compare(const subnet_t *a, const subnet_t *b) { result = a->type - b->type; - if(result) + if(result) { return result; + } - switch (a->type) { + switch(a->type) { case SUBNET_MAC: return subnet_compare_mac(a, b); + case SUBNET_IPV4: return subnet_compare_ipv4(a, b); + case SUBNET_IPV6: return subnet_compare_ipv6(a, b); + default: logger(LOG_ERR, "subnet_compare() was called with unknown subnet type %d, exitting!", - a->type); + a->type); exit(0); } @@ -198,17 +210,20 @@ bool str2net(subnet_t *subnet, const char *subnetstr) { int weight = 10; if(sscanf(subnetstr, "%hu.%hu.%hu.%hu/%d#%d", - &x[0], &x[1], &x[2], &x[3], &l, &weight) >= 5) { - if(l < 0 || l > 32) + &x[0], &x[1], &x[2], &x[3], &l, &weight) >= 5) { + if(l < 0 || l > 32) { return false; + } subnet->type = SUBNET_IPV4; subnet->net.ipv4.prefixlength = l; subnet->weight = weight; for(i = 0; i < 4; i++) { - if(x[i] > 255) + if(x[i] > 255) { return false; + } + subnet->net.ipv4.address.x[i] = x[i]; } @@ -216,17 +231,19 @@ bool str2net(subnet_t *subnet, const char *subnetstr) { } if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d#%d", - &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], - &l, &weight) >= 9) { - if(l < 0 || l > 128) + &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], + &l, &weight) >= 9) { + if(l < 0 || l > 128) { return false; + } subnet->type = SUBNET_IPV6; subnet->net.ipv6.prefixlength = l; subnet->weight = weight; - for(i = 0; i < 8; i++) + for(i = 0; i < 8; i++) { subnet->net.ipv6.address.x[i] = htons(x[i]); + } return true; } @@ -237,8 +254,10 @@ bool str2net(subnet_t *subnet, const char *subnetstr) { subnet->weight = weight; for(i = 0; i < 4; i++) { - if(x[i] > 255) + if(x[i] > 255) { return false; + } + subnet->net.ipv4.address.x[i] = x[i]; } @@ -246,24 +265,26 @@ bool str2net(subnet_t *subnet, const char *subnetstr) { } if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx#%d", - &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], &weight) >= 8) { + &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], &weight) >= 8) { subnet->type = SUBNET_IPV6; subnet->net.ipv6.prefixlength = 128; subnet->weight = weight; - for(i = 0; i < 8; i++) + for(i = 0; i < 8; i++) { subnet->net.ipv6.address.x[i] = htons(x[i]); + } return true; } if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx#%d", - &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &weight) >= 6) { + &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &weight) >= 6) { subnet->type = SUBNET_MAC; subnet->weight = weight; - for(i = 0; i < 6; i++) + for(i = 0; i < 6; i++) { subnet->net.mac.address.x[i] = x[i]; + } return true; } @@ -276,66 +297,87 @@ bool str2net(subnet_t *subnet, const char *subnetstr) { // Count number of colons for(p = subnetstr; *p; p++) - if(*p == ':') + if(*p == ':') { colons++; + } - if(colons > 7) + if(colons > 7) { return false; + } // Scan numbers before the double colon p = subnetstr; + for(i = 0; i < colons; i++) { - if(*p == ':') + if(*p == ':') { break; + } + x[i] = strtoul(p, &q, 0x10); - if(!q || p == q || *q != ':') + + if(!q || p == q || *q != ':') { return false; + } + p = ++q; } p++; colons -= i; + if(!i) { p++; colons--; } - if(!*p || *p == '/' || *p == '#') + if(!*p || *p == '/' || *p == '#') { colons--; + } // Fill in the blanks - for(; i < 8 - colons; i++) + for(; i < 8 - colons; i++) { x[i] = 0; + } // Scan the remaining numbers for(; i < 8; i++) { x[i] = strtoul(p, &q, 0x10); - if(!q || p == q) + + if(!q || p == q) { return false; + } + if(i == 7) { p = q; break; } - if(*q != ':') + + if(*q != ':') { return false; + } + p = ++q; } l = 128; - if(*p == '/') - sscanf(p, "/%d#%d", &l, &weight); - else if(*p == '#') - sscanf(p, "#%d", &weight); - if(l < 0 || l > 128) + if(*p == '/') { + sscanf(p, "/%d#%d", &l, &weight); + } else if(*p == '#') { + sscanf(p, "#%d", &weight); + } + + if(l < 0 || l > 128) { return false; + } subnet->type = SUBNET_IPV6; subnet->net.ipv6.prefixlength = l; subnet->weight = weight; - for(i = 0; i < 8; i++) + for(i = 0; i < 8; i++) { subnet->net.ipv6.address.x[i] = htons(x[i]); + } return true; } @@ -349,47 +391,47 @@ bool net2str(char *netstr, int len, const subnet_t *subnet) { return false; } - switch (subnet->type) { - case SUBNET_MAC: - snprintf(netstr, len, "%x:%x:%x:%x:%x:%x#%d", - subnet->net.mac.address.x[0], - subnet->net.mac.address.x[1], - subnet->net.mac.address.x[2], - subnet->net.mac.address.x[3], - subnet->net.mac.address.x[4], - subnet->net.mac.address.x[5], - subnet->weight); - break; + switch(subnet->type) { + case SUBNET_MAC: + snprintf(netstr, len, "%x:%x:%x:%x:%x:%x#%d", + subnet->net.mac.address.x[0], + subnet->net.mac.address.x[1], + subnet->net.mac.address.x[2], + subnet->net.mac.address.x[3], + subnet->net.mac.address.x[4], + subnet->net.mac.address.x[5], + subnet->weight); + break; - case SUBNET_IPV4: - snprintf(netstr, len, "%u.%u.%u.%u/%d#%d", - subnet->net.ipv4.address.x[0], - subnet->net.ipv4.address.x[1], - subnet->net.ipv4.address.x[2], - subnet->net.ipv4.address.x[3], - subnet->net.ipv4.prefixlength, - subnet->weight); - break; + case SUBNET_IPV4: + snprintf(netstr, len, "%u.%u.%u.%u/%d#%d", + subnet->net.ipv4.address.x[0], + subnet->net.ipv4.address.x[1], + subnet->net.ipv4.address.x[2], + subnet->net.ipv4.address.x[3], + subnet->net.ipv4.prefixlength, + subnet->weight); + break; - case SUBNET_IPV6: - snprintf(netstr, len, "%x:%x:%x:%x:%x:%x:%x:%x/%d#%d", - ntohs(subnet->net.ipv6.address.x[0]), - ntohs(subnet->net.ipv6.address.x[1]), - ntohs(subnet->net.ipv6.address.x[2]), - ntohs(subnet->net.ipv6.address.x[3]), - ntohs(subnet->net.ipv6.address.x[4]), - ntohs(subnet->net.ipv6.address.x[5]), - ntohs(subnet->net.ipv6.address.x[6]), - ntohs(subnet->net.ipv6.address.x[7]), - subnet->net.ipv6.prefixlength, - subnet->weight); - break; + case SUBNET_IPV6: + snprintf(netstr, len, "%x:%x:%x:%x:%x:%x:%x:%x/%d#%d", + ntohs(subnet->net.ipv6.address.x[0]), + ntohs(subnet->net.ipv6.address.x[1]), + ntohs(subnet->net.ipv6.address.x[2]), + ntohs(subnet->net.ipv6.address.x[3]), + ntohs(subnet->net.ipv6.address.x[4]), + ntohs(subnet->net.ipv6.address.x[5]), + ntohs(subnet->net.ipv6.address.x[6]), + ntohs(subnet->net.ipv6.address.x[7]), + subnet->net.ipv6.prefixlength, + subnet->weight); + break; - default: - logger(LOG_ERR, - "net2str() was called with unknown subnet type %d, exiting!", - subnet->type); - exit(0); + default: + logger(LOG_ERR, + "net2str() was called with unknown subnet type %d, exiting!", + subnet->type); + exit(0); } return true; @@ -409,33 +451,41 @@ subnet_t *lookup_subnet_mac(const node_t *owner, const mac_t *address) { // Check if this address is cached for(i = 0; i < 2; i++) { - if(!cache_mac_valid[i]) + if(!cache_mac_valid[i]) { continue; - if(owner && cache_mac_subnet[i] && cache_mac_subnet[i]->owner != owner) + } + + if(owner && cache_mac_subnet[i] && cache_mac_subnet[i]->owner != owner) { continue; - if(!memcmp(address, &cache_mac_address[i], sizeof *address)) + } + + if(!memcmp(address, &cache_mac_address[i], sizeof(*address))) { return cache_mac_subnet[i]; + } } // Search all subnets for a matching one for(n = owner ? owner->subnet_tree->head : subnet_tree->head; n; n = n->next) { p = n->data; - - if(!p || p->type != SUBNET_MAC) - continue; - if(!memcmp(address, &p->net.mac.address, sizeof *address)) { + if(!p || p->type != SUBNET_MAC) { + continue; + } + + if(!memcmp(address, &p->net.mac.address, sizeof(*address))) { r = p; - if(p->owner->status.reachable) + + if(p->owner->status.reachable) { break; + } } } // Cache the result cache_mac_slot = !cache_mac_slot; - memcpy(&cache_mac_address[cache_mac_slot], address, sizeof *address); + memcpy(&cache_mac_address[cache_mac_slot], address, sizeof(*address)); cache_mac_subnet[cache_mac_slot] = r; cache_mac_valid[cache_mac_slot] = true; @@ -450,31 +500,37 @@ subnet_t *lookup_subnet_ipv4(const ipv4_t *address) { // Check if this address is cached for(i = 0; i < 2; i++) { - if(!cache_ipv4_valid[i]) + if(!cache_ipv4_valid[i]) { continue; - if(!memcmp(address, &cache_ipv4_address[i], sizeof *address)) + } + + if(!memcmp(address, &cache_ipv4_address[i], sizeof(*address))) { return cache_ipv4_subnet[i]; + } } // Search all subnets for a matching one for(n = subnet_tree->head; n; n = n->next) { p = n->data; - - if(!p || p->type != SUBNET_IPV4) + + if(!p || p->type != SUBNET_IPV4) { continue; + } if(!maskcmp(address, &p->net.ipv4.address, p->net.ipv4.prefixlength)) { r = p; - if(p->owner->status.reachable) + + if(p->owner->status.reachable) { break; + } } } // Cache the result cache_ipv4_slot = !cache_ipv4_slot; - memcpy(&cache_ipv4_address[cache_ipv4_slot], address, sizeof *address); + memcpy(&cache_ipv4_address[cache_ipv4_slot], address, sizeof(*address)); cache_ipv4_subnet[cache_ipv4_slot] = r; cache_ipv4_valid[cache_ipv4_slot] = true; @@ -489,31 +545,37 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address) { // Check if this address is cached for(i = 0; i < 2; i++) { - if(!cache_ipv6_valid[i]) + if(!cache_ipv6_valid[i]) { continue; - if(!memcmp(address, &cache_ipv6_address[i], sizeof *address)) + } + + if(!memcmp(address, &cache_ipv6_address[i], sizeof(*address))) { return cache_ipv6_subnet[i]; + } } // Search all subnets for a matching one for(n = subnet_tree->head; n; n = n->next) { p = n->data; - - if(!p || p->type != SUBNET_IPV6) + + if(!p || p->type != SUBNET_IPV6) { continue; + } if(!maskcmp(address, &p->net.ipv6.address, p->net.ipv6.prefixlength)) { r = p; - if(p->owner->status.reachable) + + if(p->owner->status.reachable) { break; + } } } // Cache the result cache_ipv6_slot = !cache_ipv6_slot; - memcpy(&cache_ipv6_address[cache_ipv6_slot], address, sizeof *address); + memcpy(&cache_ipv6_address[cache_ipv6_slot], address, sizeof(*address)); cache_ipv6_subnet[cache_ipv6_slot] = r; cache_ipv6_valid[cache_ipv6_slot] = true; @@ -550,33 +612,44 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) { if(!subnet) { for(node = owner->subnet_tree->head; node; node = node->next) { subnet = node->data; - if(!net2str(netstr, sizeof netstr, subnet)) + + if(!net2str(netstr, sizeof(netstr), subnet)) { continue; + } + // Strip the weight from the subnet, and put it in its own environment variable char *weight = strchr(netstr, '#'); - if(weight) + + if(weight) { *weight++ = 0; - else + } else { weight = empty; + } // Prepare the SUBNET and WEIGHT variables - if(envp[5]) + if(envp[5]) { free(envp[5]); - if(envp[6]) + } + + if(envp[6]) { free(envp[6]); + } + xasprintf(&envp[5], "SUBNET=%s", netstr); xasprintf(&envp[6], "WEIGHT=%s", weight); execute_script(name, envp); } } else { - if(net2str(netstr, sizeof netstr, subnet)) { + if(net2str(netstr, sizeof(netstr), subnet)) { // Strip the weight from the subnet, and put it in its own environment variable char *weight = strchr(netstr, '#'); - if(weight) + + if(weight) { *weight++ = 0; - else + } else { weight = empty; + } // Prepare the SUBNET and WEIGHT variables xasprintf(&envp[5], "SUBNET=%s", netstr); @@ -586,8 +659,9 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) { } } - for(i = 0; envp[i] && i < 9; i++) + for(i = 0; envp[i] && i < 9; i++) { free(envp[i]); + } } void dump_subnets(void) { @@ -599,8 +673,11 @@ void dump_subnets(void) { for(node = subnet_tree->head; node; node = node->next) { subnet = node->data; - if(!net2str(netstr, sizeof netstr, subnet)) + + if(!net2str(netstr, sizeof(netstr), subnet)) { continue; + } + logger(LOG_DEBUG, " %s owner %s", netstr, subnet->owner->name); } diff --git a/src/subnet.h b/src/subnet.h index e129a95..6fecca3 100644 --- a/src/subnet.h +++ b/src/subnet.h @@ -1,3 +1,6 @@ +#ifndef TINC_SUBNET_H +#define TINC_SUBNET_H + /* subnet.h -- header for subnet.c Copyright (C) 2000-2009 Guus Sliepen , @@ -18,16 +21,13 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_SUBNET_H__ -#define __TINC_SUBNET_H__ - #include "net.h" typedef enum subnet_type_t { SUBNET_MAC = 0, SUBNET_IPV4, SUBNET_IPV6, - SUBNET_TYPES /* Guardian */ + SUBNET_TYPES, /* Guardian */ } subnet_type_t; typedef struct subnet_mac_t { @@ -47,11 +47,11 @@ typedef struct subnet_ipv6_t { #include "node.h" typedef struct subnet_t { - struct node_t *owner; /* the owner of this subnet */ + struct node_t *owner; /* the owner of this subnet */ - subnet_type_t type; /* subnet type (IPv4? IPv6? MAC? something even weirder?) */ - time_t expires; /* expiry time */ - int weight; /* weight (higher value is higher priority) */ + subnet_type_t type; /* subnet type (IPv4? IPv6? MAC? something even weirder?) */ + time_t expires; /* expiry time */ + int weight; /* weight (higher value is higher priority) */ /* And now for the actual subnet: */ @@ -66,23 +66,22 @@ typedef struct subnet_t { extern avl_tree_t *subnet_tree; -extern int subnet_compare(const struct subnet_t *, const struct subnet_t *); -extern subnet_t *new_subnet(void) __attribute__ ((__malloc__)); -extern void free_subnet(subnet_t *); +extern subnet_t *new_subnet(void) __attribute__((__malloc__)); +extern void free_subnet(subnet_t *subnet); extern void init_subnets(void); extern void exit_subnets(void); -extern avl_tree_t *new_subnet_tree(void) __attribute__ ((__malloc__)); -extern void free_subnet_tree(avl_tree_t *); -extern void subnet_add(struct node_t *, subnet_t *); -extern void subnet_del(struct node_t *, subnet_t *); -extern void subnet_update(struct node_t *, subnet_t *, bool); -extern bool net2str(char *, int, const subnet_t *); -extern bool str2net(subnet_t *, const char *); -extern subnet_t *lookup_subnet(const struct node_t *, const subnet_t *); -extern subnet_t *lookup_subnet_mac(const struct node_t *, const mac_t *); -extern subnet_t *lookup_subnet_ipv4(const ipv4_t *); -extern subnet_t *lookup_subnet_ipv6(const ipv6_t *); +extern avl_tree_t *new_subnet_tree(void) __attribute__((__malloc__)); +extern void free_subnet_tree(avl_tree_t *subnet_tree); +extern void subnet_add(struct node_t *owner, subnet_t *subnet); +extern void subnet_del(struct node_t *owner, subnet_t *subnet); +extern void subnet_update(struct node_t *owner, subnet_t *subnet, bool up); +extern bool net2str(char *netstr, int len, const subnet_t *subnet); +extern bool str2net(subnet_t *subnet, const char *netstr); +extern subnet_t *lookup_subnet(const struct node_t *owner, const subnet_t *subnet); +extern subnet_t *lookup_subnet_mac(const struct node_t *owner, const mac_t *address); +extern subnet_t *lookup_subnet_ipv4(const ipv4_t *address); +extern subnet_t *lookup_subnet_ipv6(const ipv6_t *address); extern void dump_subnets(void); extern void subnet_cache_flush(void); -#endif /* __TINC_SUBNET_H__ */ +#endif diff --git a/src/system.h b/src/system.h index e173426..14db7f5 100644 --- a/src/system.h +++ b/src/system.h @@ -1,3 +1,6 @@ +#ifndef TINC_SYSTEM_H +#define TINC_SYSTEM_H + /* system.h -- system headers Copyright (C) 1998-2005 Ivo Timmermans @@ -18,19 +21,10 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_SYSTEM_H__ -#define __TINC_SYSTEM_H__ - -#include "../config.h" +#include "config.h" #include "have.h" -#ifndef HAVE_STDBOOL_H -typedef int bool; -#define true 1 -#define false 0 -#endif - #ifndef HAVE_STRSIGNAL # define strsignal(p) "" #endif @@ -43,4 +37,4 @@ typedef int bool; typedef int socklen_t; #endif -#endif /* __TINC_SYSTEM_H__ */ +#endif diff --git a/src/tincd.c b/src/tincd.c index 22fb726..279c872 100644 --- a/src/tincd.c +++ b/src/tincd.c @@ -97,10 +97,10 @@ static const char *switchuser = NULL; /* If nonzero, write log entries to a separate file. */ bool use_logfile = false; -char *identname = NULL; /* program name for syslog */ -char *pidfilename = NULL; /* pid file location */ -char *logfilename = NULL; /* log file location */ -char **g_argv; /* a copy of the cmdline arguments */ +char *identname = NULL; /* program name for syslog */ +char *pidfilename = NULL; /* pid file location */ +char *logfilename = NULL; /* log file location */ +char **g_argv; /* a copy of the cmdline arguments */ static int status = 1; @@ -132,23 +132,23 @@ int main2(int argc, char **argv); static void usage(bool status) { if(status) fprintf(stderr, "Try `%s --help\' for more information.\n", - program_name); + program_name); else { printf("Usage: %s [option]...\n\n", program_name); printf(" -c, --config=DIR Read configuration options from DIR.\n" - " -D, --no-detach Don't fork and detach.\n" - " -d, --debug[=LEVEL] Increase debug level or set it to LEVEL.\n" - " -k, --kill[=SIGNAL] Attempt to kill a running tincd and exit.\n" - " -n, --net=NETNAME Connect to net NETNAME.\n" - " -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n" - " -L, --mlock Lock tinc into main memory.\n" - " --logfile[=FILENAME] Write log entries to a logfile.\n" - " --pidfile=FILENAME Write PID to FILENAME.\n" - " -o, --option=[HOST.]KEY=VALUE Set global/host configuration value.\n" - " -R, --chroot chroot to NET dir at startup.\n" - " -U, --user=USER setuid to given USER at startup.\n" - " --help Display this help and exit.\n" - " --version Output version information and exit.\n\n"); + " -D, --no-detach Don't fork and detach.\n" + " -d, --debug[=LEVEL] Increase debug level or set it to LEVEL.\n" + " -k, --kill[=SIGNAL] Attempt to kill a running tincd and exit.\n" + " -n, --net=NETNAME Connect to net NETNAME.\n" + " -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n" + " -L, --mlock Lock tinc into main memory.\n" + " --logfile[=FILENAME] Write log entries to a logfile.\n" + " --pidfile=FILENAME Write PID to FILENAME.\n" + " -o, --option=[HOST.]KEY=VALUE Set global/host configuration value.\n" + " -R, --chroot chroot to NET dir at startup.\n" + " -U, --user=USER setuid to given USER at startup.\n" + " --help Display this help and exit.\n" + " --version Output version information and exit.\n\n"); printf("Report bugs to tinc@tinc-vpn.org.\n"); } } @@ -162,166 +162,192 @@ static bool parse_options(int argc, char **argv) { cmdline_conf = list_alloc((list_action_t)free_config); while((r = getopt_long(argc, argv, "c:DLd::k::n:o:K::RU:", long_options, &option_index)) != EOF) { - switch (r) { - case 0: /* long option */ - break; + switch(r) { + case 0: /* long option */ + break; - case 'c': /* config file */ - if(confbase) { - fprintf(stderr, "Only one configuration directory can be given.\n"); - usage(true); - return false; - } - confbase = xstrdup(optarg); - break; - - case 'D': /* no detach */ - do_detach = false; - break; - - case 'L': /* no detach */ -#ifndef HAVE_MLOCKALL - logger(LOG_ERR, "%s not supported on this platform", "mlockall()"); - return false; -#else - do_mlock = true; - break; -#endif - - case 'd': /* increase debug level */ - if(!optarg && optind < argc && *argv[optind] != '-') - optarg = argv[optind++]; - if(optarg) - debug_level = atoi(optarg); - else - debug_level++; - break; - - case 'k': /* kill old tincds */ -#ifndef HAVE_MINGW - if(!optarg && optind < argc && *argv[optind] != '-') - optarg = argv[optind++]; - if(optarg) { - if(!strcasecmp(optarg, "HUP")) - kill_tincd = SIGHUP; - else if(!strcasecmp(optarg, "TERM")) - kill_tincd = SIGTERM; - else if(!strcasecmp(optarg, "KILL")) - kill_tincd = SIGKILL; - else if(!strcasecmp(optarg, "USR1")) - kill_tincd = SIGUSR1; - else if(!strcasecmp(optarg, "USR2")) - kill_tincd = SIGUSR2; - else if(!strcasecmp(optarg, "WINCH")) - kill_tincd = SIGWINCH; - else if(!strcasecmp(optarg, "INT")) - kill_tincd = SIGINT; - else if(!strcasecmp(optarg, "ALRM")) - kill_tincd = SIGALRM; - else if(!strcasecmp(optarg, "ABRT")) - kill_tincd = SIGABRT; - else { - kill_tincd = atoi(optarg); - - if(!kill_tincd) { - fprintf(stderr, "Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n", - optarg); - usage(true); - return false; - } - } - } else - kill_tincd = SIGTERM; -#else - kill_tincd = 1; -#endif - break; - - case 'n': /* net name given */ - /* netname "." is special: a "top-level name" */ - if(netname) { - fprintf(stderr, "Only one netname can be given.\n"); - usage(true); - return false; - } - if(optarg && strcmp(optarg, ".")) - netname = xstrdup(optarg); - break; - - case 'o': /* option */ - cfg = parse_config_line(optarg, NULL, ++lineno); - if (!cfg) - return false; - list_insert_tail(cmdline_conf, cfg); - break; - - case 'K': /* generate public/private keypair */ - if(!optarg && optind < argc && *argv[optind] != '-') - optarg = argv[optind++]; - if(optarg) { - generate_keys = atoi(optarg); - - if(generate_keys < 512) { - fprintf(stderr, "Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n", - optarg); - usage(true); - return false; - } - - generate_keys &= ~7; /* Round it to bytes */ - } else - generate_keys = 2048; - break; - - case 'R': /* chroot to NETNAME dir */ - do_chroot = true; - break; - - case 'U': /* setuid to USER */ - switchuser = optarg; - break; - - case 1: /* show help */ - show_help = true; - break; - - case 2: /* show version */ - show_version = true; - break; - - case 3: /* bypass security */ - bypass_security = true; - break; - - case 4: /* write log entries to a file */ - use_logfile = true; - if(!optarg && optind < argc && *argv[optind] != '-') - optarg = argv[optind++]; - if(optarg) { - if(logfilename) { - fprintf(stderr, "Only one logfile can be given.\n"); - usage(true); - return false; - } - logfilename = xstrdup(optarg); - } - break; - - case 5: /* write PID to a file */ - if(pidfilename) { - fprintf(stderr, "Only one pidfile can be given.\n"); - usage(true); - return false; - } - pidfilename = xstrdup(optarg); - break; - - case '?': + case 'c': /* config file */ + if(confbase) { + fprintf(stderr, "Only one configuration directory can be given.\n"); usage(true); return false; + } - default: - break; + confbase = xstrdup(optarg); + break; + + case 'D': /* no detach */ + do_detach = false; + break; + + case 'L': /* no detach */ +#ifndef HAVE_MLOCKALL + logger(LOG_ERR, "%s not supported on this platform", "mlockall()"); + return false; +#else + do_mlock = true; + break; +#endif + + case 'd': /* increase debug level */ + if(!optarg && optind < argc && *argv[optind] != '-') { + optarg = argv[optind++]; + } + + if(optarg) { + debug_level = atoi(optarg); + } else { + debug_level++; + } + + break; + + case 'k': /* kill old tincds */ +#ifndef HAVE_MINGW + if(!optarg && optind < argc && *argv[optind] != '-') { + optarg = argv[optind++]; + } + + if(optarg) { + if(!strcasecmp(optarg, "HUP")) { + kill_tincd = SIGHUP; + } else if(!strcasecmp(optarg, "TERM")) { + kill_tincd = SIGTERM; + } else if(!strcasecmp(optarg, "KILL")) { + kill_tincd = SIGKILL; + } else if(!strcasecmp(optarg, "USR1")) { + kill_tincd = SIGUSR1; + } else if(!strcasecmp(optarg, "USR2")) { + kill_tincd = SIGUSR2; + } else if(!strcasecmp(optarg, "WINCH")) { + kill_tincd = SIGWINCH; + } else if(!strcasecmp(optarg, "INT")) { + kill_tincd = SIGINT; + } else if(!strcasecmp(optarg, "ALRM")) { + kill_tincd = SIGALRM; + } else if(!strcasecmp(optarg, "ABRT")) { + kill_tincd = SIGABRT; + } else { + kill_tincd = atoi(optarg); + + if(!kill_tincd) { + fprintf(stderr, "Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n", + optarg); + usage(true); + return false; + } + } + } else { + kill_tincd = SIGTERM; + } + +#else + kill_tincd = 1; +#endif + break; + + case 'n': /* net name given */ + + /* netname "." is special: a "top-level name" */ + if(netname) { + fprintf(stderr, "Only one netname can be given.\n"); + usage(true); + return false; + } + + if(optarg && strcmp(optarg, ".")) { + netname = xstrdup(optarg); + } + + break; + + case 'o': /* option */ + cfg = parse_config_line(optarg, NULL, ++lineno); + + if(!cfg) { + return false; + } + + list_insert_tail(cmdline_conf, cfg); + break; + + case 'K': /* generate public/private keypair */ + if(!optarg && optind < argc && *argv[optind] != '-') { + optarg = argv[optind++]; + } + + if(optarg) { + generate_keys = atoi(optarg); + + if(generate_keys < 512) { + fprintf(stderr, "Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n", + optarg); + usage(true); + return false; + } + + generate_keys &= ~7; /* Round it to bytes */ + } else { + generate_keys = 2048; + } + + break; + + case 'R': /* chroot to NETNAME dir */ + do_chroot = true; + break; + + case 'U': /* setuid to USER */ + switchuser = optarg; + break; + + case 1: /* show help */ + show_help = true; + break; + + case 2: /* show version */ + show_version = true; + break; + + case 3: /* bypass security */ + bypass_security = true; + break; + + case 4: /* write log entries to a file */ + use_logfile = true; + + if(!optarg && optind < argc && *argv[optind] != '-') { + optarg = argv[optind++]; + } + + if(optarg) { + if(logfilename) { + fprintf(stderr, "Only one logfile can be given.\n"); + usage(true); + return false; + } + + logfilename = xstrdup(optarg); + } + + break; + + case 5: /* write PID to a file */ + if(pidfilename) { + fprintf(stderr, "Only one pidfile can be given.\n"); + usage(true); + return false; + } + + pidfilename = xstrdup(optarg); + break; + + case '?': + usage(true); + return false; + + default: + break; } } @@ -337,36 +363,39 @@ static bool parse_options(int argc, char **argv) { /* This function prettyprints the key generation process */ static int indicator(int a, int b, BN_GENCB *cb) { - switch (a) { + (void)cb; + + switch(a) { + case 0: + fprintf(stderr, "."); + break; + + case 1: + fprintf(stderr, "+"); + break; + + case 2: + fprintf(stderr, "-"); + break; + + case 3: + switch(b) { case 0: - fprintf(stderr, "."); + fprintf(stderr, " p\n"); break; case 1: - fprintf(stderr, "+"); - break; - - case 2: - fprintf(stderr, "-"); - break; - - case 3: - switch (b) { - case 0: - fprintf(stderr, " p\n"); - break; - - case 1: - fprintf(stderr, " q\n"); - break; - - default: - fprintf(stderr, "?"); - } + fprintf(stderr, " q\n"); break; default: fprintf(stderr, "?"); + } + + break; + + default: + fprintf(stderr, "?"); } return 1; @@ -390,21 +419,26 @@ static bool keygen(int bits) { BIGNUM *e = NULL; RSA *rsa_key; FILE *f; - char *pubname, *privname; + char filename[PATH_MAX]; BN_GENCB *cb; int result; fprintf(stderr, "Generating %d bits keys:\n", bits); cb = BN_GENCB_new(); - if(!cb) + + if(!cb) { abort(); + } + BN_GENCB_set(cb, indicator, NULL); rsa_key = RSA_new(); BN_hex2bn(&e, "10001"); - if(!rsa_key || !e) + + if(!rsa_key || !e) { abort(); + } result = RSA_generate_key_ex(rsa_key, bits, e, cb); @@ -413,22 +447,25 @@ static bool keygen(int bits) { if(!result) { fprintf(stderr, "Error during key generation!\n"); + RSA_free(rsa_key); return false; - } else + } else { fprintf(stderr, "Done.\n"); + } - xasprintf(&privname, "%s/rsa_key.priv", confbase); - f = ask_and_open(privname, "private RSA key"); - free(privname); + snprintf(filename, sizeof(filename), "%s/rsa_key.priv", confbase); + f = ask_and_open(filename, "private RSA key"); - if(!f) + if(!f) { + RSA_free(rsa_key); return false; + } #ifdef HAVE_FCHMOD /* Make it unreadable for others. */ fchmod(fileno(f), 0600); #endif - + fputc('\n', f); PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL); fclose(f); @@ -436,22 +473,25 @@ static bool keygen(int bits) { char *name = get_name(); if(name) { - xasprintf(&pubname, "%s/hosts/%s", confbase, name); + snprintf(filename, sizeof(filename), "%s/hosts/%s", confbase, name); free(name); } else { - xasprintf(&pubname, "%s/rsa_key.pub", confbase); + snprintf(filename, sizeof(filename), "%s/rsa_key.pub", confbase); } - f = ask_and_open(pubname, "public RSA key"); - free(pubname); + f = ask_and_open(filename, "public RSA key"); - if(!f) + if(!f) { + RSA_free(rsa_key); return false; + } fputc('\n', f); PEM_write_RSAPublicKey(f, rsa_key); fclose(f); + RSA_free(rsa_key); + return true; } @@ -465,101 +505,141 @@ static void make_names(void) { DWORD len = sizeof(installdir); #endif - if(netname) + if(netname) { xasprintf(&identname, "tinc.%s", netname); - else + } else { identname = xstrdup("tinc"); + } #ifdef HAVE_MINGW + if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) { if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) { if(!confbase) { - if(netname) + if(netname) { xasprintf(&confbase, "%s/%s", installdir, netname); - else + } else { xasprintf(&confbase, "%s", installdir); + } } - if(!logfilename) + + if(!logfilename) { xasprintf(&logfilename, "%s/tinc.log", confbase); + } } + RegCloseKey(key); - if(*installdir) + + if(*installdir) { return; + } } + #endif - if(!pidfilename) - xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname); + if(!pidfilename) { + xasprintf(&pidfilename, RUNSTATEDIR "/%s.pid", identname); + } - if(!logfilename) + if(!logfilename) { xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname); + } if(netname) { - if(!confbase) + if(!confbase) { xasprintf(&confbase, CONFDIR "/tinc/%s", netname); - else + } else { logger(LOG_INFO, "Both netname and configuration directory given, using the latter..."); + } } else { - if(!confbase) + if(!confbase) { xasprintf(&confbase, CONFDIR "/tinc"); + } } } static void free_names() { - if (identname) free(identname); - if (netname) free(netname); - if (pidfilename) free(pidfilename); - if (logfilename) free(logfilename); - if (confbase) free(confbase); + if(identname) { + free(identname); + } + + if(netname) { + free(netname); + } + + if(pidfilename) { + free(pidfilename); + } + + if(logfilename) { + free(logfilename); + } + + if(confbase) { + free(confbase); + } } static bool drop_privs() { #ifdef HAVE_MINGW - if (switchuser) { + + if(switchuser) { logger(LOG_ERR, "%s not supported on this platform", "-U"); return false; } - if (do_chroot) { + + if(do_chroot) { logger(LOG_ERR, "%s not supported on this platform", "-R"); return false; } + #else uid_t uid = 0; - if (switchuser) { + + if(switchuser) { struct passwd *pw = getpwnam(switchuser); - if (!pw) { + + if(!pw) { logger(LOG_ERR, "unknown user `%s'", switchuser); return false; } + uid = pw->pw_uid; - if (initgroups(switchuser, pw->pw_gid) != 0 || - setgid(pw->pw_gid) != 0) { + + if(initgroups(switchuser, pw->pw_gid) != 0 || + setgid(pw->pw_gid) != 0) { logger(LOG_ERR, "System call `%s' failed: %s", "initgroups", strerror(errno)); return false; } -#ifndef __ANDROID__ + +#ifndef ANDROID // Not supported in android NDK endgrent(); endpwent(); #endif } - if (do_chroot) { - tzset(); /* for proper timestamps in logs */ - if (chroot(confbase) != 0 || chdir("/") != 0) { + + if(do_chroot) { + tzset(); /* for proper timestamps in logs */ + + if(chroot(confbase) != 0 || chdir("/") != 0) { logger(LOG_ERR, "System call `%s' failed: %s", "chroot", strerror(errno)); return false; } + free(confbase); confbase = xstrdup(""); } - if (switchuser) - if (setuid(uid) != 0) { + + if(switchuser) + if(setuid(uid) != 0) { logger(LOG_ERR, "System call `%s' failed: %s", "setuid", strerror(errno)); return false; } + #endif return true; } @@ -576,18 +656,17 @@ static bool drop_privs() { int main(int argc, char **argv) { program_name = argv[0]; - if(!parse_options(argc, argv)) + if(!parse_options(argc, argv)) { return 1; - - make_names(); + } if(show_version) { printf("%s version %s\n", PACKAGE, VERSION); printf("Copyright (C) 1998-2017 Ivo Timmermans, Guus Sliepen and others.\n" - "See the AUTHORS file for a complete list.\n\n" - "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n" - "and you are welcome to redistribute it under certain conditions;\n" - "see the file COPYING for details.\n"); + "See the AUTHORS file for a complete list.\n\n" + "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n" + "and you are welcome to redistribute it under certain conditions;\n" + "see the file COPYING for details.\n"); return 0; } @@ -597,15 +676,20 @@ int main(int argc, char **argv) { return 0; } - if(kill_tincd) - return !kill_other(kill_tincd); + make_names(); - openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR); + if(kill_tincd) { + return !kill_other(kill_tincd); + } + + openlogger("tinc", use_logfile ? LOGMODE_FILE : LOGMODE_STDERR); g_argv = argv; - if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid()) + if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid()) { do_detach = false; + } + #ifdef HAVE_UNSETENV unsetenv("LISTEN_PID"); #endif @@ -626,52 +710,61 @@ int main(int argc, char **argv) { return !keygen(generate_keys); } - if(!read_server_config()) + if(!read_server_config()) { return 1; + } #ifdef HAVE_LZO + if(lzo_init() != LZO_E_OK) { logger(LOG_ERR, "Error initializing LZO compressor!"); return 1; } + #endif #ifdef HAVE_MINGW + if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) { logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError())); return 1; } - if(!do_detach || !init_service()) + if(!do_detach || !init_service()) { return main2(argc, argv); - else + } else { return 1; + } } int main2(int argc, char **argv) { InitializeCriticalSection(&mutex); EnterCriticalSection(&mutex); #endif - char *priority = NULL; + char *priority = NULL; - if(!detach()) + if(!detach()) { return 1; + } #ifdef HAVE_MLOCKALL + /* Lock all pages into memory if requested. * This has to be done after daemon()/fork() so it works for child. * No need to do that in parent as it's very short-lived. */ if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) { logger(LOG_ERR, "System call `%s' failed: %s", "mlockall", - strerror(errno)); + strerror(errno)); return 1; } + #endif /* Setup sockets and open device. */ - if(!setup_network()) + if(!setup_network()) { goto end; + } /* Initiate all outgoing connections. */ @@ -679,34 +772,35 @@ int main2(int argc, char **argv) { /* Change process priority */ - if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) { - if(!strcasecmp(priority, "Normal")) { - if (setpriority(NORMAL_PRIORITY_CLASS) != 0) { - logger(LOG_ERR, "System call `%s' failed: %s", - "setpriority", strerror(errno)); - goto end; - } - } else if(!strcasecmp(priority, "Low")) { - if (setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) { - logger(LOG_ERR, "System call `%s' failed: %s", - "setpriority", strerror(errno)); - goto end; - } - } else if(!strcasecmp(priority, "High")) { - if (setpriority(HIGH_PRIORITY_CLASS) != 0) { - logger(LOG_ERR, "System call `%s' failed: %s", - "setpriority", strerror(errno)); - goto end; - } - } else { - logger(LOG_ERR, "Invalid priority `%s`!", priority); - goto end; - } - } + if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) { + if(!strcasecmp(priority, "Normal")) { + if(setpriority(NORMAL_PRIORITY_CLASS) != 0) { + logger(LOG_ERR, "System call `%s' failed: %s", + "setpriority", strerror(errno)); + goto end; + } + } else if(!strcasecmp(priority, "Low")) { + if(setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) { + logger(LOG_ERR, "System call `%s' failed: %s", + "setpriority", strerror(errno)); + goto end; + } + } else if(!strcasecmp(priority, "High")) { + if(setpriority(HIGH_PRIORITY_CLASS) != 0) { + logger(LOG_ERR, "System call `%s' failed: %s", + "setpriority", strerror(errno)); + goto end; + } + } else { + logger(LOG_ERR, "Invalid priority `%s`!", priority); + goto end; + } + } /* drop privileges */ - if (!drop_privs()) + if(!drop_privs()) { goto end; + } /* Start main loop. It only exits when tinc is killed. */ @@ -715,7 +809,7 @@ int main2(int argc, char **argv) { /* Shutdown properly. */ ifdebug(CONNECTIONS) - devops.dump_stats(); + devops.dump_stats(); close_network_connections(); @@ -729,17 +823,11 @@ end: free(priority); EVP_cleanup(); - ENGINE_cleanup(); - CRYPTO_cleanup_all_ex_data(); -#ifdef HAVE_ERR_REMOVE_STATE - // OpenSSL claims this function was deprecated in 1.0.0, - // but valgrind's leak detector shows you still need to call it to make sure OpenSSL cleans up properly. - ERR_remove_state(0); -#endif ERR_free_strings(); + ENGINE_cleanup(); exit_configuration(&config_tree); - list_free(cmdline_conf); + list_delete_list(cmdline_conf); free_names(); return status; diff --git a/src/uml_device.c b/src/uml_device.c index a0b87f9..49f26ff 100644 --- a/src/uml_device.c +++ b/src/uml_device.c @@ -35,7 +35,7 @@ static int request_fd = -1; static int data_fd = -1; static int write_fd = -1; static int state = 0; -static char *device_info; +static const char *device_info = "UML network socket"; extern char *identname; extern volatile bool running; @@ -46,10 +46,10 @@ static uint64_t device_total_out = 0; enum request_type { REQ_NEW_CONTROL }; static struct request { - uint32_t magic; - uint32_t version; - enum request_type type; - struct sockaddr_un sock; + uint32_t magic; + uint32_t version; + enum request_type type; + struct sockaddr_un sock; } request; static struct sockaddr_un data_sun; @@ -64,13 +64,12 @@ static bool setup_device(void) { } name; struct timeval tv; - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) - xasprintf(&device, LOCALSTATEDIR "/run/%s.umlsocket", identname); + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { + xasprintf(&device, RUNSTATEDIR "/%s.umlsocket", identname); + } get_config_string(lookup_config(config_tree, "Interface"), &iface); - device_info = "UML network socket"; - if((write_fd = socket(PF_UNIX, SOCK_DGRAM, 0)) < 0) { logger(LOG_ERR, "Could not open write %s: %s", device_info, strerror(errno)); running = false; @@ -81,7 +80,7 @@ static bool setup_device(void) { fcntl(write_fd, F_SETFD, FD_CLOEXEC); #endif - setsockopt(write_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); + setsockopt(write_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); if(fcntl(write_fd, F_SETFL, O_NONBLOCK) < 0) { logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", strerror(errno)); @@ -99,7 +98,7 @@ static bool setup_device(void) { fcntl(data_fd, F_SETFD, FD_CLOEXEC); #endif - setsockopt(data_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); + setsockopt(data_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); if(fcntl(data_fd, F_SETFL, O_NONBLOCK) < 0) { logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", strerror(errno)); @@ -112,9 +111,9 @@ static bool setup_device(void) { gettimeofday(&tv, NULL); name.usecs = tv.tv_usec; data_sun.sun_family = AF_UNIX; - memcpy(&data_sun.sun_path, &name, sizeof name); - - if(bind(data_fd, (struct sockaddr *)&data_sun, sizeof data_sun) < 0) { + memcpy(&data_sun.sun_path, &name, sizeof(name)); + + if(bind(data_fd, (struct sockaddr *)&data_sun, sizeof(data_sun)) < 0) { logger(LOG_ERR, "Could not bind data %s: %s", device_info, strerror(errno)); running = false; return false; @@ -122,7 +121,7 @@ static bool setup_device(void) { if((listen_fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) { logger(LOG_ERR, "Could not open %s: %s", device_info, - strerror(errno)); + strerror(errno)); return false; } @@ -130,7 +129,7 @@ static bool setup_device(void) { fcntl(device_fd, F_SETFD, FD_CLOEXEC); #endif - setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); + setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); if(fcntl(listen_fd, F_SETFL, O_NONBLOCK) < 0) { logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", strerror(errno)); @@ -138,8 +137,9 @@ static bool setup_device(void) { } listen_sun.sun_family = AF_UNIX; - strncpy(listen_sun.sun_path, device, sizeof listen_sun.sun_path); - if(bind(listen_fd, (struct sockaddr *)&listen_sun, sizeof listen_sun) < 0) { + strncpy(listen_sun.sun_path, device, sizeof(listen_sun.sun_path)); + + if(bind(listen_fd, (struct sockaddr *)&listen_sun, sizeof(listen_sun)) < 0) { logger(LOG_ERR, "Could not bind %s to %s: %s", device_info, device, strerror(errno)); return false; } @@ -154,126 +154,135 @@ static bool setup_device(void) { logger(LOG_INFO, "%s is a %s", device, device_info); - if(routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { overwrite_mac = true; + } return true; } void close_device(void) { - if(listen_fd >= 0) + if(listen_fd >= 0) { close(listen_fd); + } - if(request_fd >= 0) + if(request_fd >= 0) { close(request_fd); + } - if(data_fd >= 0) + if(data_fd >= 0) { close(data_fd); + } - if(write_fd >= 0) + if(write_fd >= 0) { close(write_fd); + } unlink(device); free(device); - if(iface) free(iface); + + if(iface) { + free(iface); + } } static bool read_packet(vpn_packet_t *packet) { int lenin; switch(state) { - case 0: { - struct sockaddr sa; - socklen_t salen = sizeof sa; + case 0: { + struct sockaddr sa; + socklen_t salen = sizeof(sa); - request_fd = accept(listen_fd, &sa, &salen); - if(request_fd < 0) { - logger(LOG_ERR, "Could not accept connection to %s %s: %s", device_info, device, strerror(errno)); - return false; - } + request_fd = accept(listen_fd, &sa, &salen); + + if(request_fd < 0) { + logger(LOG_ERR, "Could not accept connection to %s %s: %s", device_info, device, strerror(errno)); + return false; + } #ifdef FD_CLOEXEC - fcntl(request_fd, F_SETFD, FD_CLOEXEC); + fcntl(request_fd, F_SETFD, FD_CLOEXEC); #endif - if(fcntl(listen_fd, F_SETFL, O_NONBLOCK) < 0) { - logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", strerror(errno)); - running = false; - return false; - } - - close(listen_fd); - listen_fd = -1; - device_fd = request_fd; - state = 1; - + if(fcntl(listen_fd, F_SETFL, O_NONBLOCK) < 0) { + logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", strerror(errno)); + running = false; return false; } - case 1: { - if((lenin = read(request_fd, &request, sizeof request)) != sizeof request) { - logger(LOG_ERR, "Error while reading request from %s %s: %s", device_info, - device, strerror(errno)); - running = false; - return false; - } + close(listen_fd); + listen_fd = -1; + device_fd = request_fd; + state = 1; - if(request.magic != 0xfeedface || request.version != 3 || request.type != REQ_NEW_CONTROL) { - logger(LOG_ERR, "Unknown magic %x, version %d, request type %d from %s %s", - request.magic, request.version, request.type, device_info, device); - running = false; - return false; - } + return false; + } - if(connect(write_fd, &request.sock, sizeof request.sock) < 0) { - logger(LOG_ERR, "Could not bind write %s: %s", device_info, strerror(errno)); - running = false; - return false; - } - - write(request_fd, &data_sun, sizeof data_sun); - device_fd = data_fd; - - logger(LOG_INFO, "Connection with UML established"); - - state = 2; + case 1: { + if((lenin = read(request_fd, &request, sizeof(request))) != sizeof request) { + logger(LOG_ERR, "Error while reading request from %s %s: %s", device_info, + device, strerror(errno)); + running = false; return false; } - case 2: { - if((lenin = read(data_fd, packet->data, MTU)) <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, - device, strerror(errno)); - running = false; - return false; - } - - packet->len = lenin; - - device_total_in += packet->len; - - ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, - device_info); - - return true; + if(request.magic != 0xfeedface || request.version != 3 || request.type != REQ_NEW_CONTROL) { + logger(LOG_ERR, "Unknown magic %x, version %d, request type %d from %s %s", + request.magic, request.version, request.type, device_info, device); + running = false; + return false; } - default: - logger(LOG_ERR, "Invalid value for state variable in " __FILE__); - abort(); + if(connect(write_fd, (struct sockaddr *)&request.sock, sizeof(request.sock)) < 0) { + logger(LOG_ERR, "Could not bind write %s: %s", device_info, strerror(errno)); + running = false; + return false; + } + + write(request_fd, &data_sun, sizeof(data_sun)); + device_fd = data_fd; + + logger(LOG_INFO, "Connection with UML established"); + + state = 2; + return false; + } + + case 2: { + if((lenin = read(data_fd, packet->data, MTU)) <= 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + device, strerror(errno)); + running = false; + return false; + } + + packet->len = lenin; + + device_total_in += packet->len; + + ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, + device_info); + + return true; + } + + default: + logger(LOG_ERR, "Invalid value for state variable in " __FILE__); + abort(); } } static bool write_packet(vpn_packet_t *packet) { if(state != 2) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Dropping packet of %d bytes to %s: not connected to UML yet", - packet->len, device_info); + packet->len, device_info); return false; } ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", - packet->len, device_info); + packet->len, device_info); if(write(write_fd, packet->data, packet->len) < 0) { if(errno != EINTR && errno != EAGAIN) { diff --git a/src/utils.c b/src/utils.c index 555ea50..70a5c99 100644 --- a/src/utils.c +++ b/src/utils.c @@ -26,23 +26,28 @@ static const char hexadecimals[] = "0123456789ABCDEF"; static int charhex2bin(char c) { - if(isdigit(c)) + if(isdigit(c)) { return c - '0'; - else + } else { return toupper(c) - 'A' + 10; + } } bool hex2bin(char *src, char *dst, int length) { for(int i = 0; i < length; i++) { - if(!isxdigit(src[i * 2]) || !isxdigit(src[i * 2 + 1])) + if(!isxdigit(src[i * 2]) || !isxdigit(src[i * 2 + 1])) { return false; + } + dst[i] = charhex2bin(src[i * 2]) * 16 + charhex2bin(src[i * 2 + 1]); } + return true; } void bin2hex(char *src, char *dst, int length) { int i; + for(i = length - 1; i >= 0; i--) { dst[i * 2 + 1] = hexadecimals[(unsigned char) src[i] & 15]; dst[i * 2] = hexadecimals[(unsigned char) src[i] >> 4]; @@ -59,13 +64,14 @@ const char *winerror(int err) { ptr = buf + sprintf(buf, "(%d) ", err); - if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), ptr, sizeof(buf) - (ptr - buf), NULL)) { + if(!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), ptr, sizeof(buf) - (ptr - buf), NULL)) { strcpy(ptr, "(unable to format errormessage)"); }; - if((ptr = strchr(buf, '\r'))) + if((ptr = strchr(buf, '\r'))) { *ptr = '\0'; + } return buf; } @@ -73,8 +79,11 @@ const char *winerror(int err) { unsigned int bitfield_to_int(const void *bitfield, size_t size) { unsigned int value = 0; - if(size > sizeof value) - size = sizeof value; + + if(size > sizeof(value)) { + size = sizeof(value); + } + memcpy(&value, bitfield, size); return value; } @@ -83,13 +92,14 @@ unsigned int bitfield_to_int(const void *bitfield, size_t size) { * As memcmp(), but constant-time. * Returns 0 when data is equal, non-zero otherwise. */ -int memcmp_constant_time (const void *a, const void *b, size_t size) { - const uint8_t *a1 = a, *b1 = b; - int ret = 0; - size_t i; +int memcmp_constant_time(const void *a, const void *b, size_t size) { + const uint8_t *a1 = a, *b1 = b; + int ret = 0; + size_t i; - for (i = 0; i < size; i++) - ret |= *a1++ ^ *b1++; + for(i = 0; i < size; i++) { + ret |= *a1++ ^ *b1++; + } - return ret; + return ret; } diff --git a/src/utils.h b/src/utils.h index 4d447b1..fbeae5e 100644 --- a/src/utils.h +++ b/src/utils.h @@ -1,3 +1,6 @@ +#ifndef TINC_UTILS_H +#define TINC_UTILS_H + /* utils.h -- header file for utils.c Copyright (C) 1999-2005 Ivo Timmermans @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_UTILS_H__ -#define __TINC_UTILS_H__ - extern bool hex2bin(char *src, char *dst, int length); extern void bin2hex(char *src, char *dst, int length); @@ -42,6 +42,6 @@ extern const char *winerror(int); extern unsigned int bitfield_to_int(const void *bitfield, size_t size); -int memcmp_constant_time (const void *a, const void *b, size_t size); +int memcmp_constant_time(const void *a, const void *b, size_t size); -#endif /* __TINC_UTILS_H__ */ +#endif diff --git a/src/vde_device.c b/src/vde_device.c index e69ae80..6d854a6 100644 --- a/src/vde_device.c +++ b/src/vde_device.c @@ -33,7 +33,7 @@ static struct vdepluglib plug; static struct vdeconn *conn = NULL; static int port = 0; static char *group = NULL; -static char *device_info; +static const char *device_info = "VDE socket"; extern char *identname; extern volatile bool running; @@ -49,8 +49,9 @@ static bool setup_device(void) { return false; } - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) - xasprintf(&device, LOCALSTATEDIR "/run/vde.ctl"); + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { + xasprintf(&device, RUNSTATEDIR "/vde.ctl"); + } get_config_string(lookup_config(config_tree, "Interface"), &iface); @@ -58,8 +59,6 @@ static bool setup_device(void) { get_config_string(lookup_config(config_tree, "VDEGroup"), &group); - device_info = "VDE socket"; - struct vde_open_args args = { .port = port, .group = group, @@ -67,6 +66,7 @@ static bool setup_device(void) { }; conn = plug.vde_open(device, identname, &args); + if(!conn) { logger(LOG_ERR, "Could not open VDE socket %s", device); return false; @@ -80,18 +80,21 @@ static bool setup_device(void) { logger(LOG_INFO, "%s is a %s", device, device_info); - if(routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { overwrite_mac = true; + } return true; } static void close_device(void) { - if(conn) + if(conn) { plug.vde_close(conn); + } - if(plug.dl_handle) + if(plug.dl_handle) { libvdeplug_dynclose(plug); + } free(device); @@ -100,6 +103,7 @@ static void close_device(void) { static bool read_packet(vpn_packet_t *packet) { int lenin = (ssize_t)plug.vde_recv(conn, packet->data, MTU, 0); + if(lenin <= 0) { logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); running = false; diff --git a/src/xalloc.h b/src/xalloc.h index 952f921..0eecda5 100644 --- a/src/xalloc.h +++ b/src/xalloc.h @@ -1,29 +1,97 @@ -#include +#ifndef TINC_XALLOC_H +#define TINC_XALLOC_H + +/* + xalloc.h -- malloc and related fuctions with out of memory checking + Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. + Copyright (C) 2011-2017 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., Foundation, + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +static inline void *xmalloc(size_t n) __attribute__((__malloc__)); +static inline void *xmalloc(size_t n) { + void *p = malloc(n); + + if(!p) { + abort(); + } + + return p; +} + +static inline void *xmalloc_and_zero(size_t n) __attribute__((__malloc__)); +static inline void *xmalloc_and_zero(size_t n) { + void *p = calloc(1, n); + + if(!p) { + abort(); + } + + return p; +} + +static inline void *xrealloc(void *p, size_t n) { + p = realloc(p, n); + + if(!p) { + abort(); + } + + return p; +} + +static inline char *xstrdup(const char *s) __attribute__((__malloc__)); +static inline char *xstrdup(const char *s) { + char *p = strdup(s); + + if(!p) { + abort(); + } + + return p; +} + +static inline int xvasprintf(char **strp, const char *fmt, va_list ap) { +#ifdef HAVE_MINGW + char buf[1024]; + int result = vsnprintf(buf, sizeof(buf), fmt, ap); + + if(result < 0) { + abort(); + } + + *strp = xstrdup(buf); +#else + int result = vasprintf(strp, fmt, ap); + + if(result < 0) { + abort(); + } -#ifndef PARAMS -# if defined PROTOTYPES || (defined __STDC__ && __STDC__) -# define PARAMS(Args) Args -# else -# define PARAMS(Args) () -# endif #endif + return result; +} -/* Exit value when the requested amount of memory is not available. - The caller may set it to some other value. */ -extern int xalloc_exit_failure; +static inline int xasprintf(char **strp, const char *fmt, ...) __attribute__((__format__(printf, 2, 3))); +static inline int xasprintf(char **strp, const char *fmt, ...) { + va_list ap; + va_start(ap, fmt); + int result = xvasprintf(strp, fmt, ap); + va_end(ap); + return result; +} -/* FIXME: describe */ -extern char *const xalloc_msg_memory_exhausted; - -/* FIXME: describe */ -extern void (*xalloc_fail_func) (int); - -void *xmalloc PARAMS ((size_t n)) __attribute__ ((__malloc__)); -void *xmalloc_and_zero PARAMS ((size_t n)) __attribute__ ((__malloc__)); -void *xcalloc PARAMS ((size_t n, size_t s)); -void *xrealloc PARAMS ((void *p, size_t n)) __attribute__ ((__malloc__)); - -char *xstrdup PARAMS ((const char *s)) __attribute__ ((__malloc__)); - -extern int xasprintf(char **strp, const char *fmt, ...); -extern int xvasprintf(char **strp, const char *fmt, va_list ap); +#endif diff --git a/src/xmalloc.c b/src/xmalloc.c deleted file mode 100644 index a1b1fe8..0000000 --- a/src/xmalloc.c +++ /dev/null @@ -1,168 +0,0 @@ -/* xmalloc.c -- malloc with out of memory checking - Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., Foundation, - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ - -#if HAVE_CONFIG_H -# include "../config.h" -#endif - -#include -#include -#include -#include -#include - -#if STDC_HEADERS -# include -#else -void *calloc (); -void *malloc (); -void *realloc (); -void free (); -#endif - -#include "dropin.h" -#include "xalloc.h" - -#ifndef EXIT_FAILURE -# define EXIT_FAILURE 1 -#endif - -/* Prototypes for functions defined here. */ -#if defined (__STDC__) && __STDC__ -void *xmalloc (size_t n); -void *xcalloc (size_t n, size_t s); -void *xrealloc (void *p, size_t n); -#endif - -/* Exit value when the requested amount of memory is not available. - The caller may set it to some other value. */ -int xalloc_exit_failure = EXIT_FAILURE; - -/* FIXME: describe */ -char *const xalloc_msg_memory_exhausted = "Memory exhausted"; - -/* FIXME: describe */ -void (*xalloc_fail_func) (int) = NULL; - -static void -xalloc_fail (int size) -{ - if (xalloc_fail_func) - (*xalloc_fail_func) (size); - fprintf(stderr, "%s\n", xalloc_msg_memory_exhausted); - exit(xalloc_exit_failure); -} - -/* Allocate N bytes of memory dynamically, with error checking. */ - -void * -xmalloc (size_t n) -{ - void *p; - - p = malloc (n); - if (p == NULL) - xalloc_fail ((int)n); - return p; -} - -/* Allocate N bytes of memory dynamically, and set it all to zero. */ - -void * -xmalloc_and_zero (size_t n) -{ - void *p; - - p = malloc (n); - if (p == NULL) - xalloc_fail ((int)n); - memset (p, '\0', n); - return p; -} - -/* Change the size of an allocated block of memory P to N bytes, - with error checking. - If P is NULL, run xmalloc. */ - -void * -xrealloc (void *p, size_t n) -{ - p = realloc (p, n); - if (p == NULL) - xalloc_fail (n); - return p; -} - -/* Duplicate a string */ - -char *xstrdup(const char *s) -{ - char *p; - - if(!s) - return NULL; - - p = strdup(s); - if(!p) - xalloc_fail ((int)strlen(s)); - return p; -} - -#ifdef NOT_USED - -/* Allocate memory for N elements of S bytes, with error checking. */ - -void * -xcalloc (n, s) - size_t n, s; -{ - void *p; - - p = calloc (n, s); - if (p == NULL) - xalloc_fail (); - return p; -} - -#endif /* NOT_USED */ - -int xasprintf(char **strp, const char *fmt, ...) { - int result; - va_list ap; - va_start(ap, fmt); - result = xvasprintf(strp, fmt, ap); - va_end(ap); - return result; -} - -int xvasprintf(char **strp, const char *fmt, va_list ap) { -#ifdef HAVE_MINGW - char buf[1024]; - int result = vsnprintf(buf, sizeof buf, fmt, ap); - if(result < 0) - exit(xalloc_exit_failure); - buf[sizeof buf - 1] = 0; - *strp = xstrdup(buf); -#else - int result = vasprintf(strp, fmt, ap); - if(result < 0) { - fprintf(stderr, "vasprintf() failed: %s\n", strerror(errno)); - exit(xalloc_exit_failure); - } -#endif - return result; -}