Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 11421] New: GVCP filter expression predefined values for gvcp.cmd.command, hex

[bugzilla-daemon@xxxxxxxxxxxxx]

Bug ID	11421
Summary	GVCP filter _expression_ predefined values for gvcp.cmd.command, hex vs. unsigned
Product	Wireshark
Version	1.99.x (Experimental)
Hardware	x86
OS	Windows 7
Status	UNCONFIRMED
Severity	Minor
Priority	Low
Component	Qt UI
Assignee	bugzilla-admin@wireshark.org
Reporter	nine-wireshark.org@wirdorange.org

Created attachment 13777 [details]
Screenshot: "Display Filter _expression_" Window

Build Information:
Version 1.99.8 (v1.99.8-0-ga0c561a from master)

Copyright 1998-2015 Gerald Combs <gerald@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 Qt 5.3.1, with WinPcap (unknown), with libz 1.2.8, with
GLib 2.42.0, with SMI 0.4.8, with c-ares 1.9.1, with Lua 5.2, with GnuTLS
3.2.15, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, without PortAudio,
with AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with locale C, with
WinPcap version 4.1.3 (packet.dll version 4.1.0.2980), based on libpcap version
1.0 branch 1_0_rel0b (20091008), with GnuTLS 3.2.15, with Gcrypt 1.6.2, without
AirPcap.
Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz (with SSE4.2), with 16318MB of physical
memory.


Built using Microsoft Visual C++ 12.0 build 31101

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 predefined values for the dissector gvcp.cmd.command are provided as
unsigned decimal, but should be provided as unsigned hexadecimal. As an
example, the predefined values result in expressions like 
  gvcp.cmd.command == 82
when they should be
  gvcp.cmd.command == 0x0082
for the GVCP-WRITEREG_CMD. Please comapre also the textual output of Wireshark
with the attached screenshot:



GigE Vision Control Protocol
    Command Header: WRITEREG_CMD
        Message Key Code: 0x42 (66)
        Flags: 0x01
        Command: WRITEREG_CMD (0x0082)
        Payload Length: 0x0008 (8)
        Request ID: 0x10d7 (4311)
        [Response In: 476]
        Custom Register Address: 0x00600004
            Value: 0x00000003

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