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Author SHA1 Message Date
Guus Sliepen
7fc69bc73b Use packet size before decompression to calculate path MTU. 
Since compression can either grow or shrink a packet, the size of an MTU probe
after decompression might not reflect the real path MTU. Now we use the size
before decompression, which is independent of the compression algorithm, and
substract a safety margin such that the calculated path MTU will be safe even
for packets which grow as much as possible after compression.
 2009-05-25 12:19:37 +02:00
Guus Sliepen
e012e752f4 Fix initialisation of packet decryption context broken by commit 3308d13e7e. 
Instead of a single, global decryption context, each node has its own context.
However, in send_ans_key(), the global context was initialised. This commit
fixes that and removes the global context completely.

Also only set status.validkey after all checks have been evaluated.
 2009-05-24 19:31:31 +02:00
Michael Tokarev
0246939ce1 don't log every strange packet coming to the UDP port 
it's a sure way to fill up syslog.  Only log those if
debug level is up to PROTOCOL
 2009-05-24 17:28:24 +02:00
Guus Sliepen
2c67eafc6e If PMTUDiscovery is not set, do not forward packets via TCP unnecessarily. 2009-05-24 15:58:47 +02:00
Guus Sliepen
3308d13e7e Handle UDP packets from different and ports than advertised. 
Previously, tinc used a fixed address and port for each node for UDP packet
exchange.  The port was the one advertised by that node as its listening port.
However, due to NAT the port might be different.  Now, tinc sends a different
session key to each node. This way, the sending node can be determined from
incoming packets by checking the MAC against all session keys. If a match is
found, the address and port for that node are updated.
 2009-04-03 01:05:23 +02:00
Guus Sliepen
78fc59e994 Update THANKS and copyright information. 2009-03-05 14:12:36 +01:00
Guus Sliepen
67df7fb7e1 Only send packets via UDP if UDP communication is possible. 
When no session key is known for a node, or when it is doing PMTU discovery but
no MTU probes have returned yet, packets are sent via TCP. Some logic is added
to make sure intermediate nodes continue forwarding via TCP.  The per-node
packet queue is now no longer necessary and has been removed.
 2009-01-03 22:33:55 +01:00
Guus Sliepen
47d916ec5e Search for lzo/lzo1x.h, lzo2/lzo1x.h and lzo1x.h. 2006-11-29 17:18:39 +00:00
Guus Sliepen
0714ac6c59 Nodes use events, so event system should be initialised first and destroyed last. 2006-11-11 22:44:15 +00:00
Guus Sliepen
8d393b30a9 Support and autodetect LZO version 2.0 and later. 2006-11-11 20:10:46 +00:00
Guus Sliepen
412f3fb510 Restore length of the original packet in send_udppacket(). 2006-04-26 16:29:47 +00:00
Guus Sliepen
de78d79db8 Update copyright notices, remove Ivo's email address. 2006-04-26 13:52:58 +00:00
Guus Sliepen
af95368c0f Fix signedness compiler warnings. 2006-03-19 13:06:21 +00:00
Guus Sliepen
df3220a154 Update copyright notices. 2005-05-04 18:09:30 +00:00
Guus Sliepen
0077cfaae1 Make sure broadcast packet reach the local network interface. 2004-11-16 19:02:54 +00:00
Guus Sliepen
ca7948fc06 Hopefully this really fixes late packet handling. 2004-11-09 09:51:35 +00:00
Guus Sliepen
f7b9761000 Fixed another bug in late packet handling. 2004-11-08 22:30:13 +00:00
Guus Sliepen
5373129344 Marking potential late packets was in the wrong place. 2004-09-20 20:55:49 +00:00
Guus Sliepen
7926a156e5 Update copyrights, links, email addresses and let Subversion update $Id$ keywords. 2004-03-21 14:21:22 +00:00
Guus Sliepen
af86a3226e Revert Martin Kihlgren's patch, it doesn't work the way it should. 2004-03-20 22:23:42 +00:00
Guus Sliepen
56aad1bb48 Applied Martin Kihlgren's IdentityGenerosity patch, 
simplified and renamed to StrictSource.
 2004-03-20 15:28:55 +00:00
Guus Sliepen
519d63bedb Don't forget to update destination MAC address. 2003-12-27 16:32:52 +00:00
Guus Sliepen
aebc97a77f Small fixes for PMTU discovery. 2003-12-24 10:48:15 +00:00
Guus Sliepen
35399784b6 Improvements for PMTU discovery and IPv4 packet fragmentation. 2003-12-22 11:04:17 +00:00
Guus Sliepen
9bab08e972 More sensible name, and try to set PMTU discovery on IPv6 sockets as well. 2003-12-20 21:09:33 +00:00
Guus Sliepen
6b12bea62f Let tinc figure out the exact MTU of the link. 2003-12-20 19:47:53 +00:00
Guus Sliepen
5a1406adef Code beautification, start of multicast support. 2003-12-12 19:52:25 +00:00
Guus Sliepen
a1ab57e275 Check all EVP_ function calls. 2003-10-11 12:16:13 +00:00
Guus Sliepen
b0dd705a26 Check return value of EVP_* functions, and check if length before en/decryption 
matches that after in meta.c.
 2003-10-10 16:24:24 +00:00
Guus Sliepen
288d956728 Check for short packets from the tun/tap device and from other tinc daemons. 2003-09-23 20:59:01 +00:00
Guus Sliepen
6c5f3d8b74 We don't have to tell GCC how to cast. 2003-08-28 21:05:11 +00:00
Guus Sliepen
72bdc05cb7 Allow tinc to handle unknown type addresses from other tinc daemons. 2003-08-22 11:18:42 +00:00
Guus Sliepen
f4e80cc5e0 Don't getsockopt() SO_ERROR. We get the error from send()/recv() anyway. 2003-08-16 12:40:01 +00:00
Guus Sliepen
b4c913aaa9 Log error first, try to close later. 2003-08-08 19:42:35 +00:00
Guus Sliepen
83263b7446 Sprinkle around a lot of const and some C99 initialisers. 2003-07-24 12:08:16 +00:00
Guus Sliepen
eefa28059a Use bools and enums where appropriate. 2003-07-22 20:55:21 +00:00
Guus Sliepen
e449d94cae Big header file cleanup: everything that has to do with standard system 
libraries is moved to system.h.
 2003-07-17 15:06:27 +00:00
Guus Sliepen
5db596c684 Simplify logging, update copyrights and some minor cleanups. 2003-07-12 17:41:48 +00:00
Guus Sliepen
1401faf608 Sprinkling the source with static and attributes. 2003-07-06 23:16:29 +00:00
Guus Sliepen
0b9175e998 Define logger(), cleans up source code and allows us to write log entries 
to a separate file.
 2003-07-06 22:11:37 +00:00
Guus Sliepen
249933350b Small fixes. 2003-05-07 11:21:58 +00:00
Guus Sliepen
6ba4e2da55 Small fixes to make LZO compression work. 2003-05-06 23:14:45 +00:00
Guus Sliepen
c70f52087b - Per-node EVP_CIPHER_CTX to avoid initialisation overhead. 
- LZO compression, thanks to Teemu Kiviniemi.
- Updated dutch translation.
 2003-05-06 21:13:18 +00:00
Guus Sliepen
bc9e78250e Better handling of late packets. 2003-04-18 21:18:36 +00:00
Guus Sliepen
9792ba2cac - Avoid memory leak caused by OpenSSL 0.9.7a. 
- Disable RSA_blinding_on() because it segfaults.
 2003-03-28 13:41:49 +00:00
Guus Sliepen
5b2a62ebb6 Fix PriorityInheritance. 2002-11-14 22:09:03 +00:00
Guus Sliepen
5eca9520d9 Small fixes so tinc compiles out of the box on SunOS 5.8 2002-09-15 14:55:54 +00:00
Guus Sliepen
6f9f6779e6 Remove redundant spaces. 2002-09-09 22:33:31 +00:00
Guus Sliepen
f75dcef72a Switch to K&R style indentation. 2002-09-09 21:25:28 +00:00
Guus Sliepen
5fc1ed17f4 Cleanups: 
- Convert cp to cp(); so that automatic indenters work.
 - Convert constructions like if(x == NULL) to if(!x).
 - Move all assignments out of conditions.
 2002-09-09 19:40:12 +00:00