Wireshark-bugs: [Wireshark-bugs] [Bug 3132] New: 3GPP dissectors: do not go back to tree root wh
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 17 Dec 2008 04:22:14 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3132

           Summary: 3GPP dissectors: do not go back to tree root when
                    decoding an encapsulated message
           Product: Wireshark
           Version: SVN
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: pascal.quantin@xxxxxxxxx



Pascal Quantin <pascal.quantin@xxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2578|                            |review_for_checkin?
               Flag|                            |


Created an attachment (id=2578)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=2578)
Do not go back to tree root when calling dissectors

Build Information:
Version 1.1.2

Copyright 1998-2008 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 with GTK+ 2.14.5, with GLib 2.18.3, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with c-ares 1.6.0, with Lua 5.1, with GnuTLS 2.6.3, with Gcrypt 1.4.3, with MIT
Kerberos, without GeoIP, with PortAudio V19-devel (built Dec 15 2008), with
AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, without
AirPcap.

Built using Microsoft Visual C++ 9.0 build 30729

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
The attached patch allows to keep the sub tree and avoid going back to the root
tree when decoding a 3GPP message encapsulated in another 3GPP message:
- NAS message in a RRC message
- UE Radio Access Capability Information message in a Inter RAT Handover
Information message
- NAS EPS message in a LTE RRC message
- NAS EPS message in a S1AP message

This new behaviour seems more consistent with what is done for other dissectors
(it's easier to see that the second message is included in the top message)


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