Start of control socket implementation.
This commit is contained in:
Guus Sliepen
parent
6ded8a3f08
commit
01f47c46af
6 changed files with 499 additions and 12 deletions
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@ -1,21 +1,23 @@
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## Produce this file with automake to get Makefile.in
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# $Id: Makefile.am,v 1.4.4.33 2003/08/02 15:13:08 guus Exp $
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sbin_PROGRAMS = tincd
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sbin_PROGRAMS = tincd tincctl
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EXTRA_DIST = linux/device.c bsd/device.c solaris/device.c cygwin/device.c mingw/device.c mingw/common.h raw_socket/device.c uml_socket/device.c
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tincd_SOURCES = conf.c connection.c edge.c graph.c logger.c meta.c net.c net_packet.c net_setup.c \
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tincd_SOURCES = conf.c connection.c control.c edge.c graph.c logger.c meta.c net.c net_packet.c net_setup.c \
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net_socket.c netutl.c node.c process.c protocol.c protocol_auth.c protocol_edge.c protocol_misc.c \
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protocol_key.c protocol_subnet.c route.c subnet.c tincd.c
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tincctl_SOURCES = tincctl.c
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nodist_tincd_SOURCES = device.c
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DEFAULT_INCLUDES =
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INCLUDES = @INCLUDES@ -I$(top_builddir) -I$(top_srcdir)/lib
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noinst_HEADERS = conf.h connection.h device.h edge.h graph.h logger.h meta.h net.h netutl.h node.h process.h \
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noinst_HEADERS = conf.h connection.h control.h device.h edge.h graph.h logger.h meta.h net.h netutl.h node.h process.h \
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protocol.h route.h subnet.h
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LIBS = @LIBS@ @LIBINTL@
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@ -23,6 +25,9 @@ LIBS = @LIBS@ @LIBINTL@
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tincd_LDADD = \
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$(top_builddir)/lib/libvpn.a
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tincctl_LDADD = \
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$(top_builddir)/lib/libvpn.a
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localedir = $(datadir)/locale
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AM_CFLAGS = @CFLAGS@ -DCONFDIR=\"$(sysconfdir)\" -DLOCALEDIR=\"$(localedir)\" -DLOCALSTATEDIR=\"$(localstatedir)\"
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116
src/control.c
Normal file
116
src/control.c
Normal file
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@ -0,0 +1,116 @@
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/*
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control.c -- Control socket handling.
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Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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|
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <sys/un.h>
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#include "system.h"
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#include "conf.h"
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#include "control.h"
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#include "logger.h"
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#include "xalloc.h"
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static int control_socket = -1;
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static struct event control_event;
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static splay_tree_t *control_socket_tree;
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extern char *controlfilename;
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static void handle_control_data(int fd, short events, void *event) {
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char buf[MAXBUFSIZE];
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size_t inlen;
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inlen = read(fd, buf, sizeof buf);
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if(inlen <= 0) {
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logger(LOG_DEBUG, _("Closing control socket"));
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event_del(event);
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splay_delete(control_socket_tree, event);
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close(fd);
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}
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}
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static void handle_new_control_socket(int fd, short events, void *data) {
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int newfd;
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struct event *ev;
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newfd = accept(fd, NULL, NULL);
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if(newfd < 0) {
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logger(LOG_ERR, _("Accepting a new connection failed: %s"), strerror(errno));
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event_del(&control_event);
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return;
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}
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ev = xmalloc(sizeof *ev);
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event_set(ev, newfd, EV_READ | EV_PERSIST, handle_control_data, ev);
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event_add(ev, NULL);
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splay_insert(control_socket_tree, ev);
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logger(LOG_DEBUG, _("Control socket connection accepted"));
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}
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static int control_compare(const struct event *a, const struct event *b) {
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return a < b ? -1 : a > b ? 1 : 0;
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}
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void init_control() {
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struct sockaddr_un addr;
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control_socket_tree = splay_alloc_tree((splay_compare_t)control_compare, (splay_action_t)free);
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if(strlen(controlfilename) >= sizeof addr.sun_path) {
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logger(LOG_ERR, _("Control socket filename too long!"));
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return;
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}
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memset(&addr, 0, sizeof addr);
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addr.sun_family = AF_UNIX;
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strncpy(addr.sun_path, controlfilename, sizeof addr.sun_path - 1);
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control_socket = socket(PF_UNIX, SOCK_STREAM, 0);
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if(control_socket < 0) {
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logger(LOG_ERR, _("Creating UNIX socket failed: %s"), strerror(errno));
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return;
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}
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unlink(controlfilename);
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if(bind(control_socket, (struct sockaddr *)&addr, sizeof addr) < 0) {
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logger(LOG_ERR, _("Can't bind to %s: %s\n"), controlfilename, strerror(errno));
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close(control_socket);
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return;
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}
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if(listen(control_socket, 3) < 0) {
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logger(LOG_ERR, _("Can't listen on %s: %s\n"), controlfilename, strerror(errno));
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close(control_socket);
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return;
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}
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event_set(&control_event, control_socket, EV_READ | EV_PERSIST, handle_new_control_socket, NULL);
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event_add(&control_event, NULL);
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}
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void exit_control() {
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if(control_socket >= 0) {
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event_del(&control_event);
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close(control_socket);
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}
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}
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28
src/control.h
Normal file
28
src/control.h
Normal file
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@ -0,0 +1,28 @@
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/*
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control.h -- header for control.c.
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Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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|
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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||||
|
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#ifndef __TINC_CONTROL_H__
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#define __TINC_CONTROL_H__
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extern void init_control();
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extern void exit_control();
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#endif
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@ -31,6 +31,7 @@
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#include "splay_tree.h"
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#include "conf.h"
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#include "connection.h"
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#include "control.h"
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#include "device.h"
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#include "graph.h"
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#include "logger.h"
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@ -525,10 +526,8 @@ bool setup_myself(void) {
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EV_READ|EV_PERSIST,
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handle_new_meta_connection, NULL);
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if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) {
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logger(LOG_WARNING, _("event_add failed: %s"), strerror(errno));
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close(listen_socket[listen_sockets].tcp);
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close(listen_socket[listen_sockets].udp);
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continue;
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logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno));
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abort();
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}
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event_set(&listen_socket[listen_sockets].ev_udp,
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@ -536,11 +535,8 @@ bool setup_myself(void) {
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EV_READ|EV_PERSIST,
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handle_incoming_vpn_data, NULL);
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if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
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logger(LOG_WARNING, _("event_add failed: %s"), strerror(errno));
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close(listen_socket[listen_sockets].tcp);
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close(listen_socket[listen_sockets].udp);
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event_del(&listen_socket[listen_sockets].ev_tcp);
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continue;
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logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno));
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abort();
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}
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ifdebug(CONNECTIONS) {
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@ -581,6 +577,7 @@ bool setup_network_connections(void) {
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init_nodes();
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init_edges();
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init_requests();
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init_control();
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if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
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if(pinginterval < 1) {
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@ -649,6 +646,7 @@ void close_network_connections(void) {
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asprintf(&envp[3], "NAME=%s", myself->name);
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envp[4] = NULL;
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exit_control();
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exit_requests();
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exit_edges();
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exit_subnets();
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337
src/tincctl.c
Normal file
337
src/tincctl.c
Normal file
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@ -0,0 +1,337 @@
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/*
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tincctl.c -- Controlling a running tincd
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Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
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||||
|
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
|
||||
|
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include "system.h"
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#include <sys/un.h>
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#include <openssl/rand.h>
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#include <openssl/rsa.h>
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#include <openssl/pem.h>
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#include <openssl/evp.h>
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#include <openssl/engine.h>
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#include <getopt.h>
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#include "conf.h"
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#include "protocol.h"
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#include "xalloc.h"
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/* The name this program was run with. */
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char *program_name = NULL;
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/* If nonzero, display usage information and exit. */
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bool show_help = false;
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/* If nonzero, print the version on standard output and exit. */
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bool show_version = false;
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/* If nonzero, it will attempt to kill a running tincd and exit. */
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int kill_tincd = 0;
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/* If nonzero, generate public/private keypair for this host/net. */
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int generate_keys = 0;
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char *identname = NULL; /* program name for syslog */
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char *pidfilename = NULL; /* pid file location */
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char *controlfilename = NULL; /* pid file location */
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char *confbase = NULL;
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char *netname = NULL;
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static int status;
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static struct option const long_options[] = {
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{"config", required_argument, NULL, 'c'},
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{"net", required_argument, NULL, 'n'},
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{"help", no_argument, NULL, 1},
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{"version", no_argument, NULL, 2},
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{"pidfile", required_argument, NULL, 5},
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{NULL, 0, NULL, 0}
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};
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static void usage(bool status) {
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if(status)
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fprintf(stderr, _("Try `%s --help\' for more information.\n"),
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program_name);
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else {
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printf(_("Usage: %s [options] command\n\n"), program_name);
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printf(_("Valid options are:\n"
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" -c, --config=DIR Read configuration options from DIR.\n"
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" -n, --net=NETNAME Connect to net NETNAME.\n"
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" --pidfile=FILENAME Write PID to FILENAME.\n"
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" --help Display this help and exit.\n"
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" --version Output version information and exit.\n"
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"Valid commands are:\n"
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" start Start tincd.\n"
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" stop Stop tincd.\n"
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" restart Restart tincd.\n"
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" reload Reload configuration of running tincd.\n"
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" genkey [bits] Generate a new public/private keypair.\n"
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" dump Dump a list of one of the following things:\n"
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" nodes - all known nodes in the VPN\n"
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" edges - all known connections in the VPN\n"
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" subnets - all known subnets in the VPN\n"
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" connections - all meta connections with ourself\n"
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" graph - graph of the VPN in dotty format\n"
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"\n"));
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printf(_("Report bugs to tinc@tinc-vpn.org.\n"));
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}
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}
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static bool parse_options(int argc, char **argv) {
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int r;
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int option_index = 0;
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while((r = getopt_long(argc, argv, "c:n:", long_options, &option_index)) != EOF) {
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switch (r) {
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case 0: /* long option */
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break;
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case 'c': /* config file */
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confbase = xstrdup(optarg);
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break;
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case 'n': /* net name given */
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netname = xstrdup(optarg);
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break;
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case 1: /* show help */
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show_help = true;
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break;
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||||
|
||||
case 2: /* show version */
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show_version = true;
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break;
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||||
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||||
case 5: /* write PID to a file */
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pidfilename = xstrdup(optarg);
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break;
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||||
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||||
case '?':
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||||
usage(true);
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return false;
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||||
|
||||
default:
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||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/* This function prettyprints the key generation process */
|
||||
|
||||
static void indicator(int a, int b, void *p) {
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||||
switch (a) {
|
||||
case 0:
|
||||
fprintf(stderr, ".");
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||||
break;
|
||||
|
||||
case 1:
|
||||
fprintf(stderr, "+");
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||||
break;
|
||||
|
||||
case 2:
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||||
fprintf(stderr, "-");
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||||
break;
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||||
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||||
case 3:
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switch (b) {
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||||
case 0:
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||||
fprintf(stderr, " p\n");
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||||
break;
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||||
|
||||
case 1:
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||||
fprintf(stderr, " q\n");
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||||
break;
|
||||
|
||||
default:
|
||||
fprintf(stderr, "?");
|
||||
}
|
||||
break;
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||||
|
||||
default:
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||||
fprintf(stderr, "?");
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
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Generate a public/private RSA keypair, and ask for a file to store
|
||||
them in.
|
||||
*/
|
||||
static bool keygen(int bits) {
|
||||
RSA *rsa_key;
|
||||
FILE *f;
|
||||
char *name = NULL;
|
||||
char *filename;
|
||||
|
||||
fprintf(stderr, _("Generating %d bits keys:\n"), bits);
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||||
rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL);
|
||||
|
||||
if(!rsa_key) {
|
||||
fprintf(stderr, _("Error during key generation!\n"));
|
||||
return false;
|
||||
} else
|
||||
fprintf(stderr, _("Done.\n"));
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||||
|
||||
asprintf(&filename, "%s/rsa_key.priv", confbase);
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||||
f = ask_and_open(filename, _("private RSA key"), "a");
|
||||
|
||||
if(!f)
|
||||
return false;
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||||
|
||||
#ifdef HAVE_FCHMOD
|
||||
/* Make it unreadable for others. */
|
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fchmod(fileno(f), 0600);
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||||
#endif
|
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|
||||
if(ftell(f))
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fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
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||||
|
||||
PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
|
||||
fclose(f);
|
||||
free(filename);
|
||||
|
||||
if(name)
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asprintf(&filename, "%s/hosts/%s", confbase, name);
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else
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||||
asprintf(&filename, "%s/rsa_key.pub", confbase);
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||||
|
||||
f = ask_and_open(filename, _("public RSA key"), "a");
|
||||
|
||||
if(!f)
|
||||
return false;
|
||||
|
||||
if(ftell(f))
|
||||
fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
|
||||
|
||||
PEM_write_RSAPublicKey(f, rsa_key);
|
||||
fclose(f);
|
||||
free(filename);
|
||||
|
||||
return true;
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||||
}
|
||||
|
||||
/*
|
||||
Set all files and paths according to netname
|
||||
*/
|
||||
static void make_names(void) {
|
||||
#ifdef HAVE_MINGW
|
||||
HKEY key;
|
||||
char installdir[1024] = "";
|
||||
long len = sizeof(installdir);
|
||||
#endif
|
||||
|
||||
if(netname)
|
||||
asprintf(&identname, "tinc.%s", netname);
|
||||
else
|
||||
identname = xstrdup("tinc");
|
||||
|
||||
#ifdef HAVE_MINGW
|
||||
if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
|
||||
if(!RegQueryValueEx(key, NULL, 0, 0, installdir, &len)) {
|
||||
if(!logfilename)
|
||||
asprintf(&logfilename, "%s/log/%s.log", identname);
|
||||
if(!confbase) {
|
||||
if(netname)
|
||||
asprintf(&confbase, "%s/%s", installdir, netname);
|
||||
else
|
||||
asprintf(&confbase, "%s", installdir);
|
||||
}
|
||||
}
|
||||
RegCloseKey(key);
|
||||
if(*installdir)
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
if(!pidfilename)
|
||||
asprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
|
||||
|
||||
asprintf(&controlfilename, LOCALSTATEDIR "/run/%s.control", identname);
|
||||
|
||||
if(netname) {
|
||||
if(!confbase)
|
||||
asprintf(&confbase, CONFDIR "/tinc/%s", netname);
|
||||
else
|
||||
fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
|
||||
} else {
|
||||
if(!confbase)
|
||||
asprintf(&confbase, CONFDIR "/tinc");
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
int fd;
|
||||
struct sockaddr_un addr;
|
||||
program_name = argv[0];
|
||||
|
||||
setlocale(LC_ALL, "");
|
||||
bindtextdomain(PACKAGE, LOCALEDIR);
|
||||
textdomain(PACKAGE);
|
||||
|
||||
if(!parse_options(argc, argv))
|
||||
return 1;
|
||||
|
||||
make_names();
|
||||
|
||||
if(show_version) {
|
||||
printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE,
|
||||
VERSION, __DATE__, __TIME__, PROT_CURRENT);
|
||||
printf(_("Copyright (C) 1998-2007 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"));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(show_help) {
|
||||
usage(false);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(strlen(controlfilename) >= sizeof addr.sun_path) {
|
||||
fprintf(stderr, _("Control socket filename too long!\n"));
|
||||
return 1;
|
||||
}
|
||||
|
||||
fd = socket(PF_UNIX, SOCK_STREAM, 0);
|
||||
if(fd < 0) {
|
||||
fprintf(stderr, _("Cannot create UNIX socket: %s\n"), strerror(errno));
|
||||
return 1;
|
||||
}
|
||||
|
||||
memset(&addr, 0, sizeof addr);
|
||||
addr.sun_family = AF_UNIX;
|
||||
strncpy(addr.sun_path, controlfilename, sizeof addr.sun_path - 1);
|
||||
|
||||
if(connect(fd, (struct sockaddr *)&addr, sizeof addr) < 0) {
|
||||
fprintf(stderr, _("Cannot connect to %s: %s\n"), controlfilename, strerror(errno));
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("Connected to %s.\n", controlfilename);
|
||||
|
||||
close(fd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -78,6 +78,7 @@ bool use_logfile = false;
|
|||
|
||||
char *identname = NULL; /* program name for syslog */
|
||||
char *pidfilename = NULL; /* pid file location */
|
||||
char *controlfilename = NULL; /* pid file location */
|
||||
char *logfilename = NULL; /* log file location */
|
||||
char **g_argv; /* a copy of the cmdline arguments */
|
||||
|
||||
|
|
@ -378,6 +379,8 @@ static void make_names(void)
|
|||
if(!pidfilename)
|
||||
asprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
|
||||
|
||||
asprintf(&controlfilename, LOCALSTATEDIR "/run/%s.control", identname);
|
||||
|
||||
if(!logfilename)
|
||||
asprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue