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Wireshark-bugs: [Wireshark-bugs] [Bug 6965] New: dvb-ci dissector: dissect descriptor loops by u

Date: Sat, 17 Mar 2012 11:20:22 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6965

           Summary: dvb-ci dissector: dissect descriptor loops by using
                    mpeg-descriptor
           Product: Wireshark
           Version: SVN
          Platform: x86
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
        ReportedBy: wireshark@xxxxxxxxx


Build Information:
TShark 1.7.1 (SVN Rev 41627 from /trunk)

Copyright 1998-2012 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled (64-bit) with GLib 2.24.2, with libpcap, with libz 1.2.3.4, without
POSIX capabilities, without SMI, without c-ares, without ADNS, without Lua,
without Python, with GnuTLS 2.8.6, with Gcrypt 1.4.5, with MIT Kerberos,
without
GeoIP.

Running on Linux 2.6.32-5-amd64, with locale en_US.UTF-8, with libpcap version
1.1.1, with libz 1.2.3.4.

Built using gcc 4.4.5.

--
Dear all,

I'm happy to see that support for dvb-si descriptors was comitted on Friday
(mpeg2-descriptor).

The DVB-CI descriptor can use this for apdus that contain such descriptors, see
the attached patch.

I call proto_mpeg_descriptor_dissect() directly from dvb-ci. This is working ok
except that mpeg_descr does not show up in frame.protocols (which is ok, a
descriptor is not a new protocol) and mpeg_descr doesn't work as a display
filter.
The components such as mpeg_descr.tag can be filtered without problems.

An alternative to a direct function call would be to use 
new_register_dissector("mpeg2_descr", ...) and find_dissector("mpeg2_descr")

Do you have a clear preference for any of the two approaches?

Best regards,

   Martin

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