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| author | Guy Harris <guy@alum.mit.edu> | 2003-02-18 19:59:00 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2003-02-18 19:59:00 +0000 |
| commit | 7aceda45b5d3420af5a445486bec079441cb5f93 (patch) | |
| tree | b9ed2e848f50f81d8c90ced147e73ba2cfcbdaf6 /wiretap/snoop.c | |
| parent | 2a86c131fa689b5a62db0cdebaa49462d248bcbc (diff) | |
| download | wireshark-7aceda45b5d3420af5a445486bec079441cb5f93.tar.gz wireshark-7aceda45b5d3420af5a445486bec079441cb5f93.tar.bz2 wireshark-7aceda45b5d3420af5a445486bec079441cb5f93.zip | |
Sigh. It appears that atmsnoop might, at least for some packets, put 4
bytes of padding into the packet (possibly more, as if it's putting
extra stuff in the padding as Shomiti/Finisar Surveyor does, it might be
up to 7). Fortunately, Surveyor puts lots of stuff into the padding, so
we'll crank up the "snoop vs. Surveyor" check to look for 4 or more
bytes.
svn path=/trunk/; revision=7167
Diffstat (limited to 'wiretap/snoop.c')
| -rw-r--r-- | wiretap/snoop.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/wiretap/snoop.c b/wiretap/snoop.c index 7a702c393c..6be6cd406d 100644 --- a/wiretap/snoop.c +++ b/wiretap/snoop.c @@ -1,6 +1,6 @@ /* snoop.c * - * $Id: snoop.c,v 1.61 2003/01/10 04:04:42 guy Exp $ + * $Id: snoop.c,v 1.62 2003/02/18 19:59:00 guy Exp $ * * Wiretap Library * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu> @@ -268,10 +268,12 @@ int snoop_open(wtap *wth, int *err) * hardware". * * The only way I can see to determine that is to check how much - * padding there is in the first packet - if there're 3 bytes or + * padding there is in the first packet - if there're 4 bytes or * fewer, it's probably Sun snoop, which uses the padding only - * for padding, but if there's more, it's probably a Shomiti tool, - * which uses the padding for additional information. + * for padding (except for atmsnoop, which sometimes appears to + * have 4 bytes of padding), but if there's more, it's probably + * a Shomiti tool, which uses the padding for additional + * information. */ /* Read first record header. */ @@ -303,12 +305,14 @@ int snoop_open(wtap *wth, int *err) } else { /* * Compute the number of bytes of padding in the - * record. If it's greater than 3, this must be a - * Shomiti capture. + * record. If it's greater than 4, this must be a + * Shomiti capture. (Some atmsnoop captures appear + * to have 4 bytes of padding; Shomiti captures stuff + * more than that into the padding.) */ padbytes = g_ntohl(rec_hdr.rec_len) - (sizeof rec_hdr + g_ntohl(rec_hdr.incl_len)); - is_shomiti = (padbytes > 3); + is_shomiti = (padbytes > 4); } /* |