https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4370
Summary: GSSE message dissector
Product: Wireshark
Version: SVN
Platform: Other
OS/Version: Windows XP
Status: NEW
Severity: Enhancement
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: gonzalocas@xxxxxxxxx
Build Information:
wireshark 1.3.3-GC_GSSE-001 (SVN Rev 31435 from /trunk)
Copyright 1998-2010 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+ 2.18.5, with GLib 2.22.3, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, without libpcre, with SMI 0.4.8,
with c-ares 1.7.0, 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 1
2010), with AirPcap, with new_packet_list.
Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.1
(packet.dll version 4.1.0.1753), 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
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Generic substation Events (GSE) is a control model defined as per IEC 61850
which provides a fast and reliable mechanism of transferring event data over
electrical substation networks. This provides facility to transfer the same
event message to multiple physical devices using multicast / broadcast
services. GSE control model is further subdivided into GOOSE (Generic Object
Oriented Substation Events) and GSSE (Generic Substation State Events).
GSSE messages are MMS messages transported on top of a connectionless osi
stack.
Wireshark doesn't provide connectionless osi beyond the transport layer.
I modified the session (ses), presentation (pres) and acse (acse) layers in
order to accept connectionless frames.
Since connectionless frames are a minor addendum to the connection oriented
protocol I just modified the involved layers as needed instead of make a new
group of dissectors (the connectionless transport already did this).
I have to modify the transport layer (ositp) in order to get a list of
connectionless session dissectors.
I also did a minior tweak to print_area_buf in osi-utils.c in order to
correctly print a 4 byte address in a clnp frame.
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