Commit graph

1799 commits

Author SHA1 Message Date
Guus Sliepen
242c4e2ca6 Forward packets to not directly reachable hosts via UDP if possible.
If MTU probing discovered a node was not reachable via UDP, packets for it were
forwarded to the next hop, but always via TCP, even if the next hop was
reachable via UDP. This is now fixed by retrying to send the packet using
send_packet() if the destination is not the same as the nexthop.
2009-10-24 21:53:01 +02:00
Guus Sliepen
d922db253c Make maxmtu equal to minmtu when fixing the path MTU to a node.
This ensures MTU probes used to ping nodes are not too large, and prevents
restarting MTU probing unnecessarily.
2009-10-24 21:35:40 +02:00
Guus Sliepen
a8f7fccbc2 Always reply to MTU probes via UDP.
It could sometime happen that a node would return MTU probes via TCP, which
does not make a lot of sense.
2009-10-24 21:32:06 +02:00
Guus Sliepen
cddcdc9af3 Allow UDP packets with an address different from the corresponding TCP connection. 2009-10-24 20:54:44 +02:00
Guus Sliepen
5cbddc68ba Use uint32_t instead of long int for connection options.
Options should have a fixed width anyway, but this also fixes a possible MinGW
compiler bug where %lx tries to print a 64 bit value, even though a long int is
only 32 bits.
2009-10-24 16:15:24 +02:00
Guus Sliepen
468f393c4f Add dummy device. 2009-10-24 16:05:12 +02:00
Guus Sliepen
b6543af762 Clarify and increase level of log message about MTU probes to unreachable nodes. 2009-10-20 22:39:07 +02:00
Guus Sliepen
43a6e78664 Handle weighted Subnets in switch and hub modes.
We now handle MAC Subnets in exactly the same way as IPv4 and IPv6 Subnets.
This also fixes a problem that causes unncessary broadcasting of unicast
packets in VPNs where some daemons run 1.0.10 and some run other versions.
2009-10-20 22:33:16 +02:00
Guus Sliepen
3a925479c2 Starting to work towards 1.0.11. 2009-10-20 22:22:59 +02:00
Guus Sliepen
35af4051c3 Fix a possible crash when sending the HUP signal.
When the HUP signal is sent while some outgoing connections have not been made
yet, or are being retried, a NULL pointer could be dereferenced resulting in
tinc crashing. We fix this by more careful handling of outgoing_ts, and by
deleting all connections that have not been fully activated yet at the HUP
signal is received.
2009-10-20 22:14:47 +02:00
Guus Sliepen
8c267d3d55 Releasing 1.0.10. 2009-10-18 16:45:13 +02:00
Guus Sliepen
3849de9a33 Fix description of the WEIGHT environment variable. 2009-10-18 16:44:32 +02:00
Guus Sliepen
87364c1656 Include missing header. 2009-10-18 14:22:20 +02:00
Guus Sliepen
c7fdc7d5b8 Remove debugging message when reading packets from a BSD device.
This was inadvertently introduced by commit
4a5d42178c.
2009-10-12 23:51:57 +02:00
Guus Sliepen
ec4c8bcb18 Allow the cloning /dev/tap interface to be used on FreeBSD and NetBSD.
This device works like /dev/tun on Linux, automatically creating a new tap
interface when a program opens it. We now pass the actual name of the newly
created interface in $INTERFACE.
2009-10-12 22:14:47 +02:00
Guus Sliepen
92b8abc921 Use MTU probes to regularly ping other nodes over UDP.
This keeps NAT mappings for UDP alive, and will also detect when a node is not
reachable via UDP anymore or if the path MTU is decreasing. Tinc will fall back
to TCP if the node has become unreachable.

If UDP communication is impossible, we stop sending probes, but we retry if it
changes its keys.

We also decouple the UDP and TCP ping mechanisms completely, to ensure tinc
properly detects failure of either method.
2009-10-11 18:57:58 +02:00
Guus Sliepen
927064e5fd Small updates to the documentation.
Mention that TCPOnly is not necessary anymore since tinc will autodetect
whether it can send via UDP or not. Also mention the WEIGHT environment
variable and the new default value (2048 bits) of RSA keys.
2009-10-11 15:46:52 +02:00
Guus Sliepen
2c30af6c90 Ensure that the texinfo manual can be converted to HTML.
The top node was made conditional with the @iftex command, since it should not
appear in PostScript and PDF output. However, it is still necessary for
texi2html, so we have to use @ifnottex instead.

Texi2html also complains about the use of @cindex in the copyright statement,
so we remove that.
2009-10-11 14:20:14 +02:00
Guus Sliepen
a4f132770d Revert "Raise default crypto algorithms to AES256 and SHA256."
Although it would be better to have the new defaults, only the most recent
releases of most of the platforms supported by tinc come with a version of
OpenSSL that supports SHA256. To ensure people can compile tinc and that nodes
can interact with each other, we revert the default back to Blowfish and SHA1.

This reverts commit 4bb3793e38.
2009-10-11 13:56:04 +02:00
Guus Sliepen
2762509be1 Remove code duplication when checking ADD_EDGE/DEL_EDGE messages. 2009-10-11 13:54:05 +02:00
Guus Sliepen
5cddf5e52a Don't disconnect clients in TunnelServer mode who send unauthorised ADD_SUBNETs.
So that we are liberal in what we accept.
2009-10-11 13:51:10 +02:00
Borg
430c90412c Removed last gettext function. 2009-10-03 13:06:00 +02:00
Guus Sliepen
3282375f4d Remove autogenerated files from EXTRA_DIST.
Apparently they were once necessary, but autoconf now includes them
automatically.  Some of them are not used anymore, and this caused make dist to
fail.
2009-09-29 16:25:20 +02:00
Guus Sliepen
761517c21c Update FSF address in files not covered by the merge. 2009-09-29 15:33:58 +02:00
Guus Sliepen
07a560eab6 Drop localisation and checkpoint tracing in files not covered by the merge. 2009-09-29 15:19:55 +02:00
Guus Sliepen
7ea85043ac Merge branch 'master' into 1.1
Conflicts:
	NEWS
	configure.in
	lib/Makefile.am
	lib/pidfile.c
	lib/pidfile.h
	lib/utils.c
	po/POTFILES.in
	po/nl.po
	src/Makefile.am
	src/bsd/device.c
	src/conf.c
	src/connection.c
	src/cygwin/device.c
	src/edge.c
	src/event.c
	src/graph.c
	src/linux/device.c
	src/meta.c
	src/mingw/device.c
	src/net.c
	src/net_packet.c
	src/net_setup.c
	src/net_socket.c
	src/netutl.c
	src/node.c
	src/process.c
	src/protocol.c
	src/protocol_auth.c
	src/protocol_edge.c
	src/protocol_key.c
	src/protocol_misc.c
	src/protocol_subnet.c
	src/raw_socket/device.c
	src/route.c
	src/solaris/device.c
	src/subnet.c
	src/tincd.c
	src/uml_socket/device.c
2009-09-29 14:55:29 +02:00
Guus Sliepen
9a2b0f88a9 Update the NEWS. 2009-09-26 12:51:52 +02:00
Guus Sliepen
46e481dc94 Add more authors to the copyright headers.
Git's log and blame tools were used to find out which files had significant
contributions from authors who sent in patches that were applied before we used
git.
2009-09-25 21:14:56 +02:00
Guus Sliepen
4c85542894 Drop support for localisation.
Localised messages don't make much sense for a daemon, and there is only the
Dutch translation which costs time to maintain.
2009-09-25 00:54:07 +02:00
Guus Sliepen
a227843b73 Remove checkpoint tracing.
This feature is not necessary anymore since we have tools like valgrind today
that can catch stack overflow errors before they make a backtrace in gdb
impossible.
2009-09-25 00:33:04 +02:00
Guus Sliepen
5dde6461a3 K&R style braces.
This is essentially commit f02d3ed3e1 from the
1.1 branch, making it easier to merge between master and 1.1.
2009-09-25 00:14:03 +02:00
Guus Sliepen
ab7c61b06f Update the address of the Free Software Foundation in all copyright headers. 2009-09-25 00:01:00 +02:00
Guus Sliepen
0e6856b137 Remove Ivo's old email addresses. 2009-09-24 23:42:30 +02:00
Guus Sliepen
c217d214f4 Remove all occurences of $Id$. 2009-09-24 23:39:16 +02:00
Guus Sliepen
c23fcf555e Update copyright information.
- Update year numbers in copyright headers.
- Add copyright information for Michael Tokarev and Florian Forster to the
  copyright headers of files to which they have contributed significantly.
- Mention Michael and Florian in AUTHORS.
- Mention that tinc is GPLv3 or later if compiled with the --enable-tunemu
  flag.
2009-09-24 23:29:46 +02:00
Guus Sliepen
f1fec466e2 Add a better autoconf check for libevent. 2009-09-16 23:43:19 +02:00
Guus Sliepen
4bdf0e80ee Replace asprintf()s not covered by the merge to xasprintf(). 2009-09-16 20:28:30 +02:00
Guus Sliepen
1cbddbd573 Use correct format specifiers. 2009-09-16 20:17:11 +02:00
Guus Sliepen
2f97bdb46b Add missing #include. 2009-09-16 20:16:54 +02:00
Guus Sliepen
075e6828a7 Merge branch 'master' into 1.1
Conflicts:
	have.h
	lib/dropin.c
	lib/fake-getaddrinfo.c
	lib/pidfile.c
	src/Makefile.am
	src/bsd/device.c
	src/conf.c
	src/connection.c
	src/connection.h
	src/graph.c
	src/mingw/device.c
	src/net.c
	src/net_setup.c
	src/node.c
	src/protocol_key.c
	src/protocol_misc.c
	src/tincd.c
2009-09-16 19:55:47 +02:00
Guus Sliepen
b5ccce2968 Send large packets we cannot handle properly via TCP.
During the path MTU discovery phase, we might not know the maximum MTU yet, but
we do know a safe minimum.  If we encounter a packet that is larger than that
the minimum, we now send it via TCP instead to ensure it arrives.  We also
allow large packets that we cannot fragment or create ICMP replies for to be
sent via TCP.
2009-09-15 23:22:13 +02:00
Guus Sliepen
d273efb177 Raise default RSA key length to 2048 bits. 2009-09-15 23:04:52 +02:00
Guus Sliepen
b47c17bcde Use a mutex to allow the TAP reader to process packets faster on Windows.
The TAP-Win32 device is not a socket, and select() under Windows only works
with sockets.  Tinc used a separate thread to read from the TAP-Win32 device,
and passed this via a local socket to the main thread which could then select()
from it. We now use a global mutex, which is only unlocked when the main thread
is waiting for select(), to allow the TAP reader thread to process packets
directly.
2009-09-15 22:59:01 +02:00
Guus Sliepen
802a50ffcd Remove extra {. 2009-09-15 22:58:16 +02:00
Guus Sliepen
4bb3793e38 Raise default crypto algorithms to AES256 and SHA256.
In light of the recent improvements of attacks on SHA1, the default hash
algorithm in tinc is now SHA256. At the same time, the default symmetric
encryption algorithm has been changed to AES256.
2009-09-15 12:08:05 +02:00
Guus Sliepen
633c0cf1b0 Use access() instead of stat() for checking whether scripts exist. 2009-09-15 00:36:07 +02:00
Guus Sliepen
6f1e0ece4e Remove dropin random() function, as it is not used anymore. 2009-09-15 00:28:20 +02:00
Guus Sliepen
fa9bedd47c Allow compiling for Windows XP and higher.
This allows us to use getaddrinfo(), getnameinfo() and related functions, which
allow tinc to make connections over existing IPv6 networks. These functions are
not available on Windows 2000 however. By default, support is enabled, but when
compiling for Windows 2000 the configure switch --with-windows2000 should be
used.

Since getaddrinfo() et al. are not functions but macros on Windows, we have to
use AC_CHECK_DECLS() instead of AC_CHECK_FUNCS() in configure.in.
2009-09-15 00:24:31 +02:00
Guus Sliepen
f80bf14f28 Also do not use drand48(), it is not available on Windows. 2009-09-14 23:28:28 +02:00
Guus Sliepen
35e87b903e Use only rand(), not random().
We used both rand() and random() in our code. Since it returns an int, we have
to use %x in our format strings instead of %lx. This fixes a crash under
Windows when cross-compiling tinc with a recent version of MinGW.
2009-09-14 23:06:00 +02:00