2003-01-30 18:49:47 +00:00
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/* packet-msn-messenger.c
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* Routines for MSN Messenger Service packet dissection
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* Copyright 2003, Chris Waters <chris@waters.co.nz>
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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2003-01-30 18:49:47 +00:00
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*
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2006-05-21 04:49:01 +00:00
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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2003-01-30 18:49:47 +00:00
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-pop.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/strutil.h>
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2003-01-30 19:00:10 +00:00
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/*
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* The now-expired Internet-Draft for the MSN Messenger 1.0 protocol
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* can, as of the time of the writing of this comment, be found at:
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*
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* http://praya.sourceforge.net/draft-movva-msn-messenger-protocol-00.txt
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*
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* http://mono.es.gnome.org/imsharp/tutoriales/msn/appendixa.html
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*
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* http://www.hypothetic.org/docs/msn/ietf_draft.php
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*
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* http://babble.wundsam.net/docs/protocol-msn-im.txt
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*
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* Note that it's Yet Another FTP-Like Command/Response Protocol,
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* so it arguably should be dissected as such, although you do have
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* to worry about the MSG command, as only the first line of it
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* should be parsed as a command, the rest should be parsed as the
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* message body. We therefore leave "hf_msnms_command", "tokenlen",
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* and "next_token", even though they're unused, as reminders that
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* this should be done.
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*/
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2003-01-30 18:49:47 +00:00
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static int proto_msnms = -1;
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2003-02-13 23:49:19 +00:00
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/* static int hf_msnms_command = -1; */
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2003-01-30 18:49:47 +00:00
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static gint ett_msnms = -1;
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#define TCP_PORT_MSNMS 1863
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static void
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dissect_msnms(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *msnms_tree;
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proto_item *ti;
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gint offset = 0;
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const guchar *line;
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gint next_offset;
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int linelen;
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2003-02-13 23:49:19 +00:00
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/* int tokenlen; */
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/* const guchar *next_token; */
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2003-01-30 18:49:47 +00:00
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2009-08-09 06:26:46 +00:00
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "MSNMS");
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2003-01-30 18:49:47 +00:00
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/*
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* Find the end of the first line.
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*
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* Note that "tvb_find_line_end()" will return a value that is
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* not longer than what's in the buffer, so the "tvb_get_ptr()"
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* call won't throw an exception.
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*/
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linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
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line = tvb_get_ptr(tvb, offset, linelen);
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if (check_col(pinfo->cinfo, COL_INFO)) {
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/*
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* Put the first line from the buffer into the summary.
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*/
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2007-10-23 05:50:00 +00:00
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col_add_str(pinfo->cinfo, COL_INFO,
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2003-01-30 18:49:47 +00:00
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format_text(line, linelen));
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_msnms, tvb, offset, -1,
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FALSE);
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msnms_tree = proto_item_add_subtree(ti, ett_msnms);
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/*
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* Show the rest of the packet as text,
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* a line at a time.
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*/
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while (tvb_offset_exists(tvb, offset)) {
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/*
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* Find the end of the line.
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*/
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linelen = tvb_find_line_end(tvb, offset, -1,
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&next_offset, FALSE);
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/*
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* Put this line.
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*/
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proto_tree_add_text(msnms_tree, tvb, offset,
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next_offset - offset, "%s",
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tvb_format_text(tvb, offset, next_offset - offset));
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offset = next_offset;
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}
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}
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}
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void
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proto_register_msnms(void)
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{
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static gint *ett[] = {
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&ett_msnms,
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};
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proto_msnms = proto_register_protocol("MSN Messenger Service", "MSNMS", "msnms");
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_msnms(void)
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{
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dissector_handle_t msnms_handle;
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msnms_handle = create_dissector_handle(dissect_msnms, proto_msnms);
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dissector_add("tcp.port", TCP_PORT_MSNMS, msnms_handle);
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2004-02-19 20:27:43 +00:00
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/*
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* For MSN Messenger Protocol over HTTP
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*/
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dissector_add_string("media_type", "application/x-msn-messenger", msnms_handle);
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2003-01-30 18:49:47 +00:00
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}
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