diff options
Diffstat (limited to 'epan/dissectors/packet-msn-messenger.c')
| -rw-r--r-- | epan/dissectors/packet-msn-messenger.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/epan/dissectors/packet-msn-messenger.c b/epan/dissectors/packet-msn-messenger.c new file mode 100644 index 0000000000..1b12c13eac --- /dev/null +++ b/epan/dissectors/packet-msn-messenger.c @@ -0,0 +1,153 @@ +/* packet-msn-messenger.c + * Routines for MSN Messenger Service packet dissection + * Copyright 2003, Chris Waters <chris@waters.co.nz> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * Copied from packet-pop.c + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> + +#include <string.h> +#include <glib.h> +#include <epan/packet.h> +#include <epan/strutil.h> + +/* + * The now-expired Internet-Draft for the MSN Messenger 1.0 protocol + * can, as of the time of the writing of this comment, be found at: + * + * http://praya.sourceforge.net/draft-movva-msn-messenger-protocol-00.txt + * + * http://mono.es.gnome.org/imsharp/tutoriales/msn/appendixa.html + * + * http://www.hypothetic.org/docs/msn/ietf_draft.php + * + * http://babble.wundsam.net/docs/protocol-msn-im.txt + * + * Note that it's Yet Another FTP-Like Command/Response Protocol, + * so it arguably should be dissected as such, although you do have + * to worry about the MSG command, as only the first line of it + * should be parsed as a command, the rest should be parsed as the + * message body. We therefore leave "hf_msnms_command", "tokenlen", + * and "next_token", even though they're unused, as reminders that + * this should be done. + */ + +static int proto_msnms = -1; +/* static int hf_msnms_command = -1; */ + +static gint ett_msnms = -1; + +static dissector_handle_t data_handle; + +#define TCP_PORT_MSNMS 1863 + +static void +dissect_msnms(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *msnms_tree; + proto_item *ti; + gint offset = 0; + const guchar *line; + gint next_offset; + int linelen; + /* int tokenlen; */ + /* const guchar *next_token; */ + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "MSNMS"); + + /* + * Find the end of the first line. + * + * Note that "tvb_find_line_end()" will return a value that is + * not longer than what's in the buffer, so the "tvb_get_ptr()" + * call won't throw an exception. + */ + linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE); + line = tvb_get_ptr(tvb, offset, linelen); + + + if (check_col(pinfo->cinfo, COL_INFO)) { + /* + * Put the first line from the buffer into the summary. + */ + col_add_fstr(pinfo->cinfo, COL_INFO, "%s", + format_text(line, linelen)); + } + + if (tree) { + ti = proto_tree_add_item(tree, proto_msnms, tvb, offset, -1, + FALSE); + msnms_tree = proto_item_add_subtree(ti, ett_msnms); + + /* + * Show the rest of the packet as text, + * a line at a time. + */ + while (tvb_offset_exists(tvb, offset)) { + /* + * Find the end of the line. + */ + linelen = tvb_find_line_end(tvb, offset, -1, + &next_offset, FALSE); + + /* + * Put this line. + */ + proto_tree_add_text(msnms_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, next_offset - offset)); + offset = next_offset; + } + } +} + +void +proto_register_msnms(void) +{ + static gint *ett[] = { + &ett_msnms, + }; + + proto_msnms = proto_register_protocol("MSN Messenger Service", "MSNMS", "msnms"); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_msnms(void) +{ + dissector_handle_t msnms_handle; + + msnms_handle = create_dissector_handle(dissect_msnms, proto_msnms); + dissector_add("tcp.port", TCP_PORT_MSNMS, msnms_handle); + data_handle = find_dissector("data"); + /* + * For MSN Messenger Protocol over HTTP + */ + dissector_add_string("media_type", "application/x-msn-messenger", msnms_handle); +} |