Commit graph

211 commits

Author SHA1 Message Date
Guy Harris
ce3d2ff3de Rename dissector_add_handle() to dissector_add_for_decode_as().
Hopefully that name makes it clear what the routiner's purpose is, and
will encourage people to use it rather than using dissector_add_uint()
with a bogus integer value.

Change-Id: Ic5be456d0ad40b176aab01712ab7b13aed5de2a8
Reviewed-on: https://code.wireshark.org/review/2483
Reviewed-by: Guy Harris <guy@alum.mit.edu>
2014-06-20 16:43:56 +00:00
Michael Mann
14824e6adf Revert "Fixup: tvb_* -> tvb_captured"
https://www.wireshark.org/lists/wireshark-dev/201406/msg00131.html

This reverts commit 246fe2ca4c.

Change-Id: Ib24bae0198c13a84bd7f731bf4af921212109a8f
Reviewed-on: https://code.wireshark.org/review/2430
Reviewed-by: Michael Mann <mmann78@netscape.net>
2014-06-19 18:25:59 +00:00
Dario Lombardo
246fe2ca4c Fixup: tvb_* -> tvb_captured
Change-Id: I9209c1271967405c34c1b6fa43e1726a4d3a5a3f
Reviewed-on: https://code.wireshark.org/review/2377
Reviewed-by: Anders Broman <a.broman58@gmail.com>
2014-06-18 14:14:58 +00:00
Joerg Mayer
55cdf038a8 ip version and header-length are not full byte values. Show the
bit decoding for these values.

Change-Id: I7ab6c4badf5b66d6f434a47523e2b35730ecb65d
Reviewed-on: https://code.wireshark.org/review/2338
Reviewed-by: Jörg Mayer <jmayer@loplof.de>
2014-06-17 19:39:27 +00:00
AndersBroman
2cfda31ff0 Change the signature of dissector_try_heuristic() to return hdtbl_entry
which can be used to call the found heuristic dissector on the next pass.

Introduce call_heur_dissector_direct() to be used to call a heuristic
dissector which accepted the frame on the first pass.

Change-Id: I524edd717b7d92b510bd60acfeea686d5f2b4582
Reviewed-on: https://code.wireshark.org/review/1697
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
2014-05-21 20:17:29 +00:00
Peter Wu
e6d6183e1b ip: display calculated checksum
This patch adds a new "ip.checksum_calculated" field that can be used
for display in a column.

Based on d7c4bde279 ("tcp: display
calculated checksum").

Change-Id: Ide5eb6640d51ded88b1df309092a0a3aaf482b03
Reviewed-on: https://code.wireshark.org/review/1676
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Evan Huus <eapache@gmail.com>
2014-05-19 02:21:40 +00:00
Michael Mann
65700bd2e0 Make a dissector table out of IPv6 Next header.
This cleans up the implementation of the extension header, but also allows Decode As functionality for Next Header fields. This allows "old" SHIM6 IP protocol number (not IANA registered) to still be dissected.

bug:9995
Change-Id: I6f29a1f7db144478c5b6416d27da2c9c5a7a1de1
Reviewed-on: https://code.wireshark.org/review/1378
Reviewed-by: Michael Mann <mmann78@netscape.net>
2014-04-28 23:50:15 +00:00
Alexis La Goutte
296591399f Remove all $Id$ from top of file
(Using sed : sed -i '/^ \* \$Id\$/,+1 d')

Fix manually some typo (in export_object_dicom.c and crc16-plain.c)

Change-Id: I4c1ae68d1c4afeace8cb195b53c715cf9e1227a8
Reviewed-on: https://code.wireshark.org/review/497
Reviewed-by: Anders Broman <a.broman58@gmail.com>
2014-03-04 14:27:33 +00:00
Gerald Combs
104a6edd1f Disable IPv4 checksum verfification to match TCP and UDP.
Offloading seems to be very common nowadays and having this option
enabled by default generates a lot of false positives. Suggested by
Laura Chappell.

Change-Id: I285f218efb3c9f164d8ad7a6d6de8270e442ffff
Reviewed-on: https://code.wireshark.org/review/426
Reviewed-by: Evan Huus <eapache@gmail.com>
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
2014-03-01 13:49:56 +00:00
Alexis La Goutte
42188b997b Fix packet-ip.c:579:9: error: will never be executed [-Werror,-Wunreachable-code]
Change-Id: Id368fdb7025260cb1fc261f844eae8c018c65edd
Reviewed-on: https://code.wireshark.org/review/325
Reviewed-by: Evan Huus <eapache@gmail.com>
Reviewed-by: Jeff Morriss <jeff.morriss.ws@gmail.com>
2014-02-25 15:32:50 +00:00
Jakub Zawadzki
4cf7cdd387 fix some warnings.
svn path=/trunk/; revision=54334
2013-12-21 17:34:41 +00:00
Jakub Zawadzki
1053e722ed Fix warnings
svn path=/trunk/; revision=54089
2013-12-14 12:45:57 +00:00
Guy Harris
a2b9f02e59 Fix some cases where STR_UNICODE was used with FT_DOUBLE.
svn path=/trunk/; revision=53831
2013-12-07 19:43:59 +00:00
Jakub Zawadzki
7ab18667e5 Drop proto_tree_add_unicode_string() from IP, IPv6, JSON dissectors.
Set .display to STR_UNICODE (instead of STR_ASCII).

svn path=/trunk/; revision=53827
2013-12-07 15:48:35 +00:00
Gerald Combs
a6dea7695e The ip.proto table isn't limited to the IPv4 dissector.
svn path=/trunk/; revision=53759
2013-12-03 18:16:38 +00:00
Michael Mann
55c6869980 Remove ip_ttl from packet_info structure.
Part of the fix includes having the IPv6 dissector populate as much of a ws_ip structure as possible to pass to subdissectors of the "ip.proto" table, so the ttl value can be picked up.

svn path=/trunk/; revision=53522
2013-11-23 19:16:05 +00:00
Michael Mann
76ab93ea94 Provide "Decode As" functionality through dissectors themselves instead of the GUI. Bug 9450 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9450)
The basic idea behind this design is to have dissectors register with a "decode as list" with their name and dissector table.  When "Decode As" dialog is launched, any "registered" dissector found in the packet will cause a tab to be created in the dialog.

This patch includes just the dissector portion of the functionality (minus packet-dcerpc.[ch] because it has hooks to the current GUI)

svn path=/trunk/; revision=53445
2013-11-20 19:17:08 +00:00
Evan Huus
389423aaaa Replace pinfo->layer_names as a string with pinfo->layers as a wmem_list of
protocol IDs. This is substantially more efficient, which means we can build it
all the time rather than only if tree (in my benchmarks the extra time taken is
not large enough to be statistically significant even over tens of thousands of
packets).

This fixes what was probably a bug in btobex that relied on layer_names for
non-tree dissection. It also enables a much simpler fix for
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9303

svn path=/trunk/; revision=53089
2013-11-05 17:48:48 +00:00
Michael Mann
8c64c5da89 Remove iplen and iphdrlen from struct _packet_info.
Dissectors should just use (reported) tvb length and taps have other ways to get the data.

svn path=/trunk/; revision=52899
2013-10-27 20:38:42 +00:00
Michael Mann
ab0ad4aa1c Make TAPA dissector heuristic instead of "ugly hack" now that IP dissector supports heuristics.
IP heuristics pass in IP header to help subdissectors decide what to do.

svn path=/trunk/; revision=52835
2013-10-25 01:54:53 +00:00
Michael Mann
346f803d42 Convert proto_tree_add_uint_format to proto_tree_add_uint_format_value if hf_ field name is the first part of the formatted string. This was all manual inspection and most cases were either:
1. Case sensitivity differences between hf_ field name and formatted string.
2. Unnecessary whitespace between hf_ field name and colon in formatted string

There are cases where the hf_ field name doesn't quite match the proto_tree_add_uint_format, but it's close enough that one of them should be "right", I'm just not sure which is, I just know the string in proto_tree_add_uint_format is the one displayed.

svn path=/trunk/; revision=52098
2013-09-16 10:39:06 +00:00
Michael Mann
b38ee917b1 Convert proto_tree_add_uint_format to proto_tree_add_uint_format_value if hf_ field name is the first part of the formatted string. This was done with a perl script on the dissectors directory (packet-*.c), followed by manual inspection of the output. The manual inspection yielded a few cases that really should have been proto_tree_add_uint or proto_tree_add_item, so I updated them accordingly.
The script didn't catch as many as I would have liked, but it's a start.

The most common (ab)use of proto_tree_add_uint_format was for appending strings to CRC/checksum values to note good or bad CRC/checksum.

svn path=/trunk/; revision=52045
2013-09-15 01:48:30 +00:00
Chris Maynard
5cd898cd80 Rename frame relay NLPID dissector table from "fr.ietf" to "fr.nlpid".
svn path=/trunk/; revision=51960
2013-09-11 21:55:00 +00:00
Chris Maynard
f2c276ec21 Change the name of the Cisco HDLC dissector table from chdlctype to chdlc.protocol and change the UI name to match. It is by far much more common to name the tables after the field than to pick another name.
svn path=/trunk/; revision=51958
2013-09-11 21:37:58 +00:00
Michael Mann
9e3f9b449f expert_add_info_format_text -> expert_add_info_format
svn path=/trunk/; revision=51852
2013-09-09 00:44:09 +00:00
Jakub Zawadzki
a18172147f Remove fragment_data, add fragment_head, fragment_item - for now alias it to the same structure.
This is begin of work to split fragment head and fragments items.

svn path=/trunk/; revision=50708
2013-07-17 21:12:24 +00:00
Michael Mann
7878e93cad expert_add_info_format_text + proto_tree_add_text = proto_tree_add_expert_format, where applicable.
svn path=/trunk/; revision=50377
2013-07-03 23:43:26 +00:00
Michael Mann
4d18fdf67d Add expert info to dissect_ip_tcp_options(). The proto_tree_add_text seems a bit duplicative, but the byte highlighting over the whole option is nice.
svn path=/trunk/; revision=50248
2013-06-30 03:16:32 +00:00
Alexis La Goutte
b6adc8798d Fix some Dead Store (Dead assignement/Dead increment) Warning found by Clang
svn path=/trunk/; revision=50247
2013-06-29 22:01:21 +00:00
Michael Mann
e5af2f55ee Separate IP option header fields for each dissector that uses dissect_ip_tcp_options(). Bug 8823 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8823)
svn path=/trunk/; revision=50230
2013-06-29 19:59:08 +00:00
Michael Mann
cfc133ddb6 Add heuristic capabilities to the IP dissector. The motivating factor was the CARP dissector, bug 8633 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8633)
This should allow the ugly IPIP/TAPA hack to be replaced with a proper heuristic, but I don't see any sample TAPA traces to feel confident in making the change myself.


svn path=/trunk/; revision=49930
2013-06-14 14:13:28 +00:00
Michael Mann
6229ab6266 Batch of filterable expert infos.
svn path=/trunk/; revision=49845
2013-06-08 02:06:24 +00:00
Evan Huus
37600a157b Rename value string (and similar) functions to use a consistent pattern. This
was done using textual search+replace, not anything syntax-aware, so presumably
it got most comments as well (except where there were typos).

Use a consistent coding style, and make proper use of the WS_DLL_* defines.

Group the functions appropriately in the header.

I ended up getting rid of most of the explanatory comments since many of them
duplicated what was in the value_string.c file (and were out of sync with the
recent updates I made to those in r48633). Presumably most of the comments
should be in the .h file not the .c file, but there's enough churn ahead that
it's not worth fixing yet.

Part of https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8467

svn path=/trunk/; revision=48634
2013-03-29 00:26:23 +00:00
Guy Harris
fc5b86f6d4 Correctly label checksums not checked due to the packet in question
being incorporated inside an ICMP error packet.

svn path=/trunk/; revision=48518
2013-03-24 00:39:44 +00:00
Guy Harris
a2414d8909 Don't wire into the reassembly code the notion that reassemblies should
be done on flows from one address to another; reassembly for protocols
running atop TCP should be done on flows from one TCP endpoint to
another.

We do this by:

	adding "reassembly table" as a data structure;

	associating hash tables for both in-progress reassemblies and
	completed reassemblies with that data structure (currently, not
	all reassemblies use the latter; they might keep completed
	reassemblies in the first table);

	having functions to create and destroy keys in that table;

	offering standard routines for doing address-based and
	address-and-port-based flow processing, so that dissectors not
	needing their own specialized flow processing can just use them.

This fixes some mis-reassemblies of NIS YPSERV YPALL responses (where
the second YPALL response is processed as if it were a continuation of
a previous response between different endpoints, even though said
response is already reassembled), and also allows the DCE RPC-specific
stuff to be moved out of epan/reassembly.c into the DCE RPC dissector.

svn path=/trunk/; revision=48491
2013-03-22 23:59:54 +00:00
Anders Broman
c3a054e6c1 Don't calculate checksum for ICMP packsets with a partial IP packet.
svn path=/trunk/; revision=48423
2013-03-19 18:51:36 +00:00
Anders Broman
55c498169d From beroset:
remove C++ incompatibilities 
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8416

svn path=/trunk/; revision=48400
2013-03-18 21:16:23 +00:00
Evan Huus
ae17fffd38 Convert IPv4 dissector to wmem - much bigger canarie in the coal mine, since
IPv4 is *everywhere*.

svn path=/trunk/; revision=46471
2012-12-08 21:36:14 +00:00
Guy Harris
8b3de820ee Fix uninitialized-variable bug.
svn path=/trunk/; revision=46199
2012-11-26 03:45:55 +00:00
Guy Harris
83da3483cd If TSO support is enabled and, as a result, we assume an IP packet with
zero as the total length is the result of TSO, report that specially, so
that it's clearer why the we're reporting the length as non-zero when
it's zero in the packet data.

See

	http://ask.wireshark.org/questions/16279/why-are-the-bytes-00-00-but-wireshark-shows-an-ip-total-length-of-2016

svn path=/trunk/; revision=46198
2012-11-26 03:14:02 +00:00
Martin Mathieson
0aebd579e3 Show SACK information in TCP graphs. Also add a generated field for the
number of SACK ranges found in the SACK option.

This involved extending the IP options framework to include an extra
void* data field, which in the case of TCP is filled in with the tap
struct - other users currently pass NULL.

I first implemented the graph to sort the SACK ranges and show (in red)
the unacknowledged regions between them, but this became confusing where
the number of ranges is limited by TCP padding bytes. i.e. you can't
tell how many SACKs could have been encoded, so some of the gaps between
ranges may already have been received.

svn path=/trunk/; revision=46006
2012-11-12 03:55:46 +00:00
Jakub Zawadzki
da00b4089e Continuation of r43335
- ipv6.traffic_class.dscp use ext string so and need BASE_EXT_STRING flag (fix SIGSEGV)
- dscp_vals was removed from .h file, so make it static
- export dscp_vals_ext

svn path=/trunk/; revision=45380
2012-10-08 09:50:47 +00:00
Jeff Morriss
2552c750e5 We always HAVE_CONFIG_H so don't bother checking whether we have it or not.
svn path=/trunk/; revision=45017
2012-09-20 02:03:38 +00:00
Anders Broman
8e74cd8d16 Fix errors in the packet length checks.
svn path=/trunk/; revision=44939
2012-09-17 12:13:34 +00:00
Anders Broman
9db969ded1 Add IPv6 heuristic.
svn path=/trunk/; revision=44938
2012-09-17 10:46:56 +00:00
Anders Broman
ebda6f06b7 Try to make the buildbot happy.
svn path=/trunk/; revision=44901
2012-09-14 14:40:47 +00:00
Anders Broman
ffbacb51d2 Heuristically dissect TIPC IP payloads.
svn path=/trunk/; revision=44900
2012-09-14 14:14:46 +00:00
Jeff Morriss
aa5d9d78dd From Robert Bullen via https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7683 :
The reassembled fragments tree in the Packet Details view is awesome, but it
lacks one thing: a field that exposes the reassembled data.

tcp.data already exists for exposing a single TCP segment's payload as a byte
array. It would be handy to have something similar for a single application
layer PDU when TCP segment reassembly is involved. I propose
tcp.reassembled.data, named and placed after the already existing field
tcp.reassembled.length.

My primary use case for this feature is outputting tcp.reassembled.data with
tshark for further processing with a script.

The attached patch implements this very feature. Because the reassembled
fragment tree code is general purpose, i.e. not specific to just TCP, any
dissector that relies upon it can add a similar field very cheaply. In that
vein I've also implemented ip.reassembled.data and ipv6.reassembled.data, which
expose reassembled fragment data as a single byte stream for IPv4 and IPv6,
respectively. All other protocols that use the reassembly code have been left
alone, other than inserting NULL into their initializer lists for the newly
introduced struct field reassemble.h:fragment_items.hf_reassembled_data.

svn path=/trunk/; revision=44802
2012-09-07 02:09:59 +00:00
Guy Harris
307e13d9f2 Move the list of AX.25 protocol IDs to epan/ax25_pids.h. Use it in
packet-ax25.c and packet-arp.c.

Add an "ax25.pid" dissector table for those protocol IDs, use it in the
AX.25 dissector, and have dissectors register in that table with their
protocol IDs.

Get rid of some unneeded includes.

Clean up some "AX25"s in user-visible strings - say "AX.25" instead.

Clean up some indentation.

svn path=/trunk/; revision=44235
2012-08-03 01:58:12 +00:00
Evan Huus
a234b68ff0 Fix some system header files that were #included with "" instead of <>.
They made cppcheck unhappy.

svn path=/trunk/; revision=43779
2012-07-18 02:47:56 +00:00