https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5734
Summary: Mask in Lua ProtoField.uint32() does not work as
expected
Product: Wireshark
Version: 1.5.x (Experimental)
Platform: x86
OS/Version: Windows XP
Status: NEW
Severity: Minor
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: ernesto.puerta+wireshark@xxxxxxxxx
Build Information:
Version 1.5.0 (SVN Rev 35637 from /trunk)
Copyright 1998-2011 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 (32-bit) with GTK+ 2.16.6, with GLib 2.24.2, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jan
24 2011), with AirPcap.
Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.2
(packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.8.5, Gcrypt 1.4.5, 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.
--
In Lua, a declaration as following:
f.id = ProtoField.uint32("proto.id", "ID", base.DEC, nil, 0xF0000000)
[...]
tree:add(f.id, tvb(0,4))
Results in something like that (0x10000000):
0... .... .... .... .... .... .... .... = ID: 0
While the following should be expected (0xF0000000):
0100 .... .... .... .... .... .... .... = ID: 4
It only affects the FIRST byte in uint32 fields, and 8/16/24-bit integer fields
are free of this bug.
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