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20 Commits

Author SHA1 Message Date
itojun ca89dc0998 minimize diffs to tcpdump.org tree, even if cosmetic. 
changes include:
- do not chase header if ip/ip6 datagram is framgented, and it is not the
  first fragment
- u_short -> u_int16_t
- buffer boundary checks, including sprintf -> snprintf
- cleanup truncated packet cases
- pull tcpdump.org enhancements/corrections for RIP, IPv6 options, ICMPv6,
  OSPFv3, IPv4 options, BGP

there are a lot of local/conflicting changes.  we'd gradually decrease
# of diffs by synchronizing both ends, and then move to src/dist/tcpdump
and reachover makefile.
 2001-01-28 10:05:05 +00:00
itojun 058e85bfc6 we shouldn't use "(ip + 1)" to detect intermediate headers (AH/ESP). 
we should use ip_p == IPPROTO_TCP/UDP.
 2000-08-01 17:39:46 +00:00
itojun 1c0969bf27 use of ip_p is irrelevant in tcp_cksum, as we may have AH/ESP inbetween. 2000-08-01 17:34:00 +00:00
itojun 1174b9a1a9 implement tcp6 pseudo header cksum. 2000-08-01 17:24:40 +00:00
itojun 6baefd92e4 sync with recent KAME. 
- more length overflow check for ip6 related parsing
- protocol decode fixes
- add dhcp6 parser

XXX how should we maintain usr.sbin/tcpdump for years to come?
relationship with www.tcpdump.org codebase?
 1999-12-10 05:45:07 +00:00
sjg dbb9ca2738 Add printing of TELNET options (with -v) and hex/ascii (-X). 
Thanks to Alan Barrett for the simpler hexdump code and testing.
Tested on -current and 1.4.1.
 1999-09-30 14:49:12 +00:00
itojun bffdeb20f5 tiny sync with KAME code. 1999-09-04 03:58:13 +00:00
itojun e4aa9b3d90 do tcp/udp checksum only if it is IPv4. 
TODO: IPv6 tcp/udp pseudo header checksum
 1999-07-02 14:51:22 +00:00
itojun c282889c17 Pv6, IPsec, ospf6, ripng, dhcp and other protocols support. 1999-07-02 11:31:28 +00:00
sommerfeld 4b5ec636eb Fix obvious LP64 and aliasing bogons in checksum verification code. 
Should fix spurious "bad checksum" errors on alpha, but not yet tested
on that platform.
 1999-06-25 03:08:02 +00:00
sommerfe 4b41ddc197 Double-check tcp/udp checksum if we get enough data to do it. 1998-12-18 20:28:54 +00:00
christos 0382099526 Revert decrementing the length too early; this was broken before the merge... 1997-10-03 20:38:03 +00:00
christos b03548c3bc Resolved conflicts. 1997-10-03 19:54:07 +00:00
fvdl 9ba6417ed1 Don't try to print an NFS packet over TCP when there's not enough space 
for an RPC header (--> garbage && coredumps).
 1996-05-26 18:35:14 +00:00
fvdl d65ddbd4e0 Grok NFSv3 packets. Needs a bit of work but is ok for now. Enable dumping 
of NFS packets over TCP. Upgrade to 3.0.4 while at it. 3.0.4 fixes previous
fix made to util.c too; 'official' fix applied instead (very minor difference).

Fixes to be sent to maintainers RSN.
 1996-05-20 00:41:00 +00:00
mycroft 1939eb406f Clean up merge, port to NetBSD, and add NetBSD RCS tags. 1995-03-06 19:09:42 +00:00
cgd 072431f8af headers, for protos. 1994-12-23 17:05:58 +00:00
mycroft 1b8d06930c Oops. 1994-04-03 05:19:05 +00:00
mycroft 9ebe8aff36 Don't modify the header in place! 1994-04-03 05:17:11 +00:00
deraadt 56c9ee826f tcpdump version 2.1.1 by Steve McCanne <mccanne@ee.lbl.gov> 1993-11-14 21:19:50 +00:00