Commit graph

509 commits

Author SHA1 Message Date
Ondrej Zajicek
024c310b53 Fixes broken cryptographic authentication in OSPF
Cryptographic authentication in OSPF is defective by
design - there might be several packets independently
sent to the network (for example HELLO, LSUPD and LSACK)
where they might be reordered and that causes crypt.
sequence number error.

That can be workarounded by not incresing sequence number
too often. Now we update it only when last packet was sent
before at least one second. This can constitute a risk of
replay attacks, but RFC supposes something similar (like time
in seconds used as CSN).
2009-04-08 20:15:01 +02:00
Ondrej Zajicek
b722fe7ebd Fixes bug in OSPF packet retransmission.
If a DBDES packet from a master to a slave is lost, then the old code
does not retransmit it and instead send a next one with the same
sequence number. That leads to silent desynchronization of LSA
databases.
2009-04-06 16:53:06 +02:00
Ondrej Zajicek
8298d780be Better OSPF packet tracing log messages.
Replaces old OSPF packet tracing messages with
uniform messages with packet dumps.
2009-04-06 16:17:47 +02:00
Ondrej Zajicek
a9dc5e1ef2 Fixes another bug in packet retransmissions.
When slave was in full state, it didn't retransmit
lost packets. That leads to OSPF connection locked
in states loading-full.
2009-02-25 16:28:21 +01:00
Ondrej Zajicek
d901db3fb7 Fixes bug in packet retransmissions.
When packet was lost during dbdes exchange, slave did not retransmit
it. That leads to OSPF connection locked in states exchange-exstart.
2009-02-12 19:46:51 +01:00
Ondrej Zajicek
e3c460bc90 Fixes some past config grammar update that caused password related regression. 2009-01-16 12:08:07 +01:00
Ondrej Zajicek
3b108f18e8 One null-pointer dereference bugfix hidden in whitespace changes 2009-01-16 10:58:52 +01:00
Ondrej Zajicek
0dd7ccc766 Fix typo. 2009-01-13 19:25:27 +01:00
Ondrej Zajicek
0844b65d13 Fix OSPF protocol error recovery behavior.
When OSPF neighbor state drops down to EXSTART,
clear LSA request and retransmit lists, as specified
by RFC. I hope that this will prevent oscillations
between EXSTART and LOADING states, which sometimes
happened.

It also contains related fix from Yury Shevchuk that
properly resets DB summary list iterator.
2009-01-13 19:15:49 +01:00
Ondrej Zajicek
f15cb99c79 Add check detecting packet overwrite in TX buffer. 2009-01-12 23:42:51 +01:00
Ondrej Zajicek
23d6702952 Some fixes and update of OSPF debug messages 2009-01-11 12:14:27 +01:00
Ondrej Zajicek
0e9617e400 Move check for NULL before usage of variable. 2009-01-11 10:51:54 +01:00
Ondrej Zajicek
f20907adf6 Fixes bug in OSPF
Checksum was not recalculated when LSA was changed and
packets with bad checksum were sent.
2009-01-11 10:47:41 +01:00
Ondrej Zajicek
3f670371cf OSPF routes appeared with random value of ospf_tag attribute.
This patch fixes it.
2008-11-14 21:13:56 +01:00
Ondrej Zajicek
aebe06b40c Proper format functions for ORIGINATOR_ID, CLUSTER_LIST 2008-11-08 23:33:22 +01:00
Ondrej Zajicek
b21f68b4cd Fix bugs in OSPF MD5 authentication. First bug is that default
values for MD5 password ID changed during reconfigure, Second
bug is that BIRD chooses password in first-fit manner, but RFC
says that it should use the one with the latest generate-from.

It also modifies the syntax for multiple passwords.
Now it is possible to just add more 'password' statements
to the interface section and it is not needed to use
'passwords' section. Old syntax can be used too.
2008-11-08 17:24:23 +01:00
Ondrej Zajicek
fd91ae3325 Fix problem with local time changes. 2008-11-05 22:36:49 +01:00
Ondrej Zajicek
f0ad56f441 Fixes some sloppiness of commit a3b70dc499. 2008-10-28 16:10:42 +01:00
Ondrej Zajicek
a3b70dc499 Two new informative CLI commands for OSPF.
Two new CLI commands for OSPF giving nice informative (and still machine
parsable) representation of OSPF network graph (based on datas from the
LSA database).

The first command (show ospf topology) shows routers, networks and stub
networks, The second command (show ospf state) shows also external
routes and area-external networks and routers propagated by given area
boundary router.
2008-10-27 00:03:30 +01:00
Ondrej Zajicek
52586ccdf1 Missing newline. 2008-10-26 23:53:05 +01:00
Ondrej Zajicek
a97122a3ca Bugfix in LSA origination for PTP OSPF links.
The code generating LSAs for PTP OSPF links is buggy. The old behavior
is that it generates PTP link if there is a full/ptp neighbor and stub
link if there isn't. According to RFC 2328, the correct behavior is to
generate stub link in both cases (in the first case together with PTP
link).

And because of buggy detection of unnumbered networks, for numbered
networks the code creates stub links with 0.0.0.0/32.
2008-10-26 23:43:13 +01:00
Ondrej Filip
226cb2bc3f Expand ospf dump information. 2008-08-25 12:51:06 +00:00
Ondrej Filip
73e53eb555 Endianity problem in debug message fix. 2008-08-25 12:00:55 +00:00
Ondrej Filip
f39e3bfdbf Small bugfix in tracing. 2005-03-15 23:42:41 +00:00
Ondrej Filip
94c42054ea Added new parametr 'rx buffer <num>'. BIRD is able to receive
very large packets (if configured).
2005-03-15 22:06:36 +00:00
Ondrej Filip
e6ea2e375e Maximal packet size in virtual links is 576. 2005-03-15 20:51:33 +00:00
Ondrej Filip
e300066d5f OSPF can accept larger packets than MTU. 2005-03-14 11:24:56 +00:00
Ondrej Filip
427e59939b Look for large packets. 2005-03-14 11:07:10 +00:00
Ondrej Filip
a2d5b405d4 Bugfix in external routes calculation. 2005-03-14 10:59:52 +00:00
Ondrej Filip
39fc85b4c6 Unused code deleted. 2005-02-20 19:03:34 +00:00
Ondrej Filip
63ca37f313 Cleanup - all unused variables deleted. 2005-02-20 18:56:06 +00:00
Ondrej Filip
52d61a8498 Intelligent reconfiguration should work again. 2005-02-20 16:54:09 +00:00
Ondrej Filip
dafaef9ba9 Originate default route into stub areas. 2005-02-20 16:53:06 +00:00
Ondrej Filip
d8c7d9e884 Since now I can also use 'dead interval', not just 'dead counter'. 2005-02-20 04:27:56 +00:00
Ondrej Filip
7de7470a2a Bugfix - count courrectly next hop on single hop virtual link. 2005-02-20 03:37:47 +00:00
Ondrej Filip
6eb4b73fe8 Time of neighbor's dead was not shown correctly. 2005-02-20 03:30:44 +00:00
Ondrej Filip
5506c82ce6 Bugfix in previous bugfix. 2005-02-18 19:36:32 +00:00
Ondrej Filip
60e04f0413 Minor bugfix: Summary LSA for aggregated area was always propagated with
metric = 1. Now it's metric of most distant component.
2005-02-18 18:51:42 +00:00
Ondrej Filip
27a1e3ac35 Minor bugfixes in routing table calsulation. 2005-02-15 16:17:42 +00:00
Ondrej Filip
2eef9e887a Be more verbose in log. 2005-02-14 21:34:46 +00:00
Ondrej Filip
b181f444a6 Small changes to reduce number of warnings. 2005-02-14 11:54:16 +00:00
Ondrej Filip
5d3f555234 Many bugfixes in routing table calculation and summary LSA origination. 2005-02-13 23:36:31 +00:00
Ondrej Filip
89ba9a1806 Bugfix in inter-area route calculation and summary LSA origination.
Bugfix of some debugging commands.
2005-02-12 22:22:18 +00:00
Ondrej Filip
bae7c43ff3 Bugfix in password acceptance 2005-02-12 22:19:46 +00:00
Ondrej Filip
9912fa51c8 Bugfix - cost of interface can be larger than 0xffff 2005-02-12 22:18:48 +00:00
Ondrej Filip
4991756863 Dont check netmask field on PTP links. 2004-09-15 19:33:01 +00:00
Ondrej Filip
7715f9d9ed Bugfix in config.y 2004-08-10 17:47:32 +00:00
Ondrej Filip
56e2a4b776 Bugfix in OSPF - BIRD sometimes failed during rt calculation with VLINKs. 2004-08-05 18:06:30 +00:00
Ondrej Filip
8d94a524b6 Added handling of STUB bool. 2004-07-16 08:27:11 +00:00
Ondrej Filip
002ecc0638 Bugfix - bird needed double ';' after rfc1583compat. 2004-07-16 07:22:43 +00:00