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146 commits

Author SHA1 Message Date
Guus Sliepen
c5737583c8 - Instead of logging an error when remote end closes the connection, 
we print a nice message if appropiate debug level is set.
- If we get ADD_HOSTs or DEL_HOSTs for ourself, then connection lists
  are really messed up. We restart, and hope our problems go away.
 2000-06-30 12:41:06 +00:00
Guus Sliepen
0f9ad1f047 - Fixed memory leak. 
- Implemented SIGHUP configuration file reloading.
- Other small changes.
 2000-06-29 19:47:04 +00:00
Guus Sliepen
18c85caac3 - New semantics for BASIC_INFO, ADD_HOST and DEL_HOST requests. This will 
improve connection list consistency, ensures the tree property, and
  allows for recovery from situations where track of connections is lost.
 2000-06-29 17:09:08 +00:00
Guus Sliepen
e8e7379311 - Removed all IP_ADDR_S macros, because gettext doesn't like them. Each 
connection now has two hostnames: real_hostname (replacing the old),
  and vpn_hostname. In those places where hostnames really aren't usefull
  IP_ADDR_S has been replaced by %d.%d.%d.%d.
 2000-06-29 13:04:15 +00:00
Guus Sliepen
8c6c60adf3 - Fixed a message in nl.po 
- Woops, we forgot to send our connection list to our uplink when we
  connect to it... Fixed.
 2000-06-28 13:41:02 +00:00
Guus Sliepen
ea40d3f1a0 - Fixed some spelling errors. 
- Paar zpelvautjes gerepareerd, en de Nederlandse vertaling weer bij de
  tijd gebracht.
 2000-06-28 11:38:01 +00:00
Guus Sliepen
070ad08118 - Purge old connections that are ADD_HOSTed. 2000-06-27 20:55:12 +00:00
Guus Sliepen
4aeaea5e59 - Improved handling of errors on connection attempts. 2000-06-27 20:10:48 +00:00
Guus Sliepen
4faed1b854 - Fixed KEY_CHANGED notification. A lot of notify_others() calls were 
wrong (first two arguments swapped). Should probably be doublechecked.
- Don't retry to connect to hosts with different protocol versions.
 2000-06-27 12:58:04 +00:00
Guus Sliepen
04cb206298 - Moved all connection messages to debug level 1, without -d's only the 
startup message will be logged.
- Fixed DEL_HOST rebound.
 2000-06-26 20:30:21 +00:00
Guus Sliepen
783c829861 - Indirectdata finally REALLY REALLY works now! 
- More precise debug messages
 2000-06-26 19:39:34 +00:00
Guus Sliepen
b3681ebf6c Fixes some hostlookups. Fixes indirectdata for real now (hopefully). 2000-06-26 17:20:58 +00:00
Guus Sliepen
a473ece8a0 - More verbose connection list 
- Added "myself" as hostname when logging indirect ADD_HOSTs
 2000-06-25 16:39:17 +00:00
Guus Sliepen
f1f901112e Hostlookup() is actually being called now. 2000-06-25 16:20:27 +00:00
Guus Sliepen
54079bdf03 Hostnames are back! 2000-06-25 16:01:12 +00:00
Guus Sliepen
e4b586ed07 - Log possible spoofing attacks. 
- Don't broadcast DEL_HOSTs for hosts that haven't been activated yet.
- If a host sends a TERMREQ, deactivate them.
 2000-06-25 15:45:09 +00:00
Guus Sliepen
7f7e158aae Large cleanup: 
- Removed hostname lookup (it blocks, and you can always do it yourself)
- Reorganized debug levels (after hints from Axel M�ller):
  0	Startup message and errors
  1	Connection logging
  2	Meta protocol information
  3	Verbose meta protocol (includes copy of transmitted requests)
  4	Packet information (logs transmission/errors of UDP packets)
  5	Verbose packet information (every single byte, not implemented yet
	to protect ourselves from filling up /var/log directories)
- Made log messages more consistent
 2000-06-25 15:16:12 +00:00
Guus Sliepen
d8e2f7104c First step for implementation of the "indirectdata" directive. This should 
allow _leaf_ tincds to be behind firewalls.
The protocol has changed and is INCOMPATIBLE with previous versions. The
PROT_CURRENT value has been incremented.
 2000-06-23 19:27:03 +00:00
Ivo Timmermans
17fa07510a Only accept an ADD_HOST request for a host that already exists in our conn_list if the nexthop field matches the sender. This is a workaround for older clients. 2000-05-30 21:36:16 +00:00
Guus Sliepen
a7ad161d2b Only activate a connection upon receiving it's public key if it's an 
incoming connection. When it's outgoing, we need to receive an ack first.
 2000-05-29 23:40:05 +00:00
Ivo Timmermans
9fd02ffcb0 Internationalization of tinc. 2000-05-29 21:01:26 +00:00
Guus Sliepen
61e71ab74a Terminate a connection on any error. Furthermore, disallow del_host, 
add_host and other important requests until remote host has properly
authenticated itself.
 2000-05-27 20:23:01 +00:00
Guus Sliepen
028659bfbf Fixed typos. When terminating a connection, it's status is not only set to 
remove=1 but also active=0.
 2000-05-27 19:23:20 +00:00
Guus Sliepen
e4ff969a98 Fix for a DoS attack: 
A remote user could telnet to the tinc daemon and type only this line:
 61 6 00000000/00000000:28f
 This would deny any packets to be sent to other tinc networks (except
 for to the hosts that run tincd's themselves). Solution is to skip
 hosts in lookup_conn() that have not been activated yet.
Fixed potential conn_list table corruption:
 If a new connection is accepted but a connection with the same subnet
 would already exist in the connection list, the OLD connection is
 terminated.
 2000-05-27 19:04:12 +00:00
Ivo Timmermans
de09916ead Only print an error with send_termreq if debug_lvl is 2 or more. 2000-05-14 13:50:10 +00:00
Guus Sliepen
ee96ccabbb Cleanups. 2000-05-14 12:22:42 +00:00
Ivo Timmermans
74b0cbecce Include sys/types.h. 2000-05-04 23:17:02 +00:00
Guus Sliepen
7853247523 Fixes typo and UDP network byte order. 2000-05-03 17:59:07 +00:00
Guus Sliepen
89610e3fba Replaced sprintf() by safer snprintf(), removed possible buffer overflow 
by one byte.
 2000-05-02 10:16:50 +00:00
Guus Sliepen
aeccaca829 Previous fix fixed. Meta protocol should be really flawless from now on! 2000-05-02 09:55:34 +00:00
Ivo Timmermans
a9247e6f2c Fixed meta protocol. 2000-05-01 21:31:59 +00:00
Guus Sliepen
ca6abd41ea Meta protocol overhaul. Tinc is now incompatible with previous versions, 
furthermore this version does NOT work yet because of a problem with
sending keys (these should be converted to base36 or something like that).
It is possible to telnet to the tinc daemon now and type some commands
by hand though :).
 2000-05-01 18:07:12 +00:00
Ivo Timmermans
33cfdf43f4 Key forwarding, write one byte extra. 2000-04-30 20:48:48 +00:00
Ivo Timmermans
75d351eaf1 Protocol fix (ANS_KEY). This breaks 0.3.3 protocol compatibility. 2000-04-30 19:49:49 +00:00
Ivo Timmermans
b4290c3f43 Send one less byte from an ANS_KEY request. 2000-04-30 19:03:00 +00:00
Ivo Timmermans
d878230ebe Read one less byte from an ANS_KEY request. 2000-04-30 18:57:16 +00:00
Ivo Timmermans
789a4c4f40 Removed debug messages. 2000-04-30 16:34:31 +00:00
Ivo Timmermans
eb1c9814e6 Read public keys the right way (tm). 2000-04-30 16:31:23 +00:00
Ivo Timmermans
ca73b722cb New way of handling the meta protocol. 2000-04-30 16:11:05 +00:00
Ivo Timmermans
1c007c0627 Got rid of the nasty hacks... and replaced it by another one. 2000-04-30 01:15:47 +00:00
Ivo Timmermans
c027459914 Filled up the protocol structs with unused bytes. 2000-04-29 20:39:36 +00:00
Guus Sliepen
44f9449888 Cleanups: 
- Changed recv/send calls into read/write calls for streams
- Made all sizeof() functions use a variable name instead of type
 2000-04-26 17:42:55 +00:00
Guus Sliepen
3a33568652 Added checkpoints to beginning and ending of every function. 2000-04-25 18:57:23 +00:00
Guus Sliepen
16d581be68 Bug found! Wrong pointer was used for handling multiple ADD_HOST requests 
at once. (See line 606.)
 2000-04-24 09:39:50 +00:00
Guus Sliepen
f6802d349d Added extra checks for desynchronized connection lists. Hopefully this will 
fix those strange segmentation faults.
 2000-04-24 08:32:57 +00:00
Ivo Timmermans
1243156a5e Initial revision 2000-03-26 00:33:07 +00:00