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wireshark/packet-ymsg.c

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/* packet-ymsg.c
* Routines for Yahoo Messenger YMSG protocol packet version 9 dissection
* Copyright 2003, Wayne Parrott <wayne_p@pacific.net.au>
* Copied from packet-yhoo.c and updated
*
* $Id: packet-ymsg.c,v 1.3 2003/10/22 21:21:05 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* 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>
static int proto_ymsg = -1;
static int hf_ymsg_version = -1;
static int hf_ymsg_len = -1;
static int hf_ymsg_service = -1;
static int hf_ymsg_status = -1;
static int hf_ymsg_session_id = -1;
static int hf_ymsg_content = -1;
static gint ett_ymsg = -1;
static gint ett_ymsg_content = -1;
#define TCP_PORT_YMSG 23 /* XXX - this is Telnet! */
#define TCP_PORT_YMSG_2 25 /* And this is SMTP! */
#define TCP_PORT_YMSG_3 5050 /* This, however, is regular Yahoo Messenger */
/*
* This is from yahoolib2.c from libyahoo2.
*
* See also
*
* http://libyahoo2.sourceforge.net/ymsg-9.txt
*
* and
*
* http://www.venkydude.com/articles/yahoo.htm
*
* and
*
* http://www.cse.iitb.ac.in/~varunk/YahooProtocol.htm
*
* and
*
* http://www.geocrawler.com/archives/3/4893/2002/1/0/7459037/
*
* and
*
* http://www.geocities.com/ziggycubbe/ym.html
*/
/* Service constants */
enum yahoo_service { /* these are easier to see in hex */
YAHOO_SERVICE_LOGON = 1,
YAHOO_SERVICE_LOGOFF,
YAHOO_SERVICE_ISAWAY,
YAHOO_SERVICE_ISBACK,
YAHOO_SERVICE_IDLE, /* 5 (placemarker) */
YAHOO_SERVICE_MESSAGE,
YAHOO_SERVICE_IDACT,
YAHOO_SERVICE_IDDEACT,
YAHOO_SERVICE_MAILSTAT,
YAHOO_SERVICE_USERSTAT, /* 0xa */
YAHOO_SERVICE_NEWMAIL,
YAHOO_SERVICE_CHATINVITE,
YAHOO_SERVICE_CALENDAR,
YAHOO_SERVICE_NEWPERSONALMAIL,
YAHOO_SERVICE_NEWCONTACT,
YAHOO_SERVICE_ADDIDENT, /* 0x10 */
YAHOO_SERVICE_ADDIGNORE,
YAHOO_SERVICE_PING,
YAHOO_SERVICE_GOTGROUPRENAME, /* < 1, 36(old), 37(new) */
YAHOO_SERVICE_SYSMESSAGE = 0x14,
YAHOO_SERVICE_PASSTHROUGH2 = 0x16,
YAHOO_SERVICE_CONFINVITE = 0x18,
YAHOO_SERVICE_CONFLOGON,
YAHOO_SERVICE_CONFDECLINE,
YAHOO_SERVICE_CONFLOGOFF,
YAHOO_SERVICE_CONFADDINVITE,
YAHOO_SERVICE_CONFMSG,
YAHOO_SERVICE_CHATLOGON,
YAHOO_SERVICE_CHATLOGOFF,
YAHOO_SERVICE_CHATMSG = 0x20,
YAHOO_SERVICE_GAMELOGON = 0x28,
YAHOO_SERVICE_GAMELOGOFF,
YAHOO_SERVICE_GAMEMSG = 0x2a,
YAHOO_SERVICE_FILETRANSFER = 0x46,
YAHOO_SERVICE_VOICECHAT = 0x4A,
YAHOO_SERVICE_NOTIFY,
YAHOO_SERVICE_VERIFY,
YAHOO_SERVICE_P2PFILEXFER,
YAHOO_SERVICE_PEERTOPEER = 0x4F, /* Checks if P2P possible */
YAHOO_SERVICE_AUTHRESP = 0x54,
YAHOO_SERVICE_LIST,
YAHOO_SERVICE_AUTH = 0x57,
YAHOO_SERVICE_ADDBUDDY = 0x83,
YAHOO_SERVICE_REMBUDDY,
YAHOO_SERVICE_IGNORECONTACT, /* > 1, 7, 13 < 1, 66, 13, 0*/
YAHOO_SERVICE_REJECTCONTACT,
YAHOO_SERVICE_GROUPRENAME = 0x89, /* > 1, 65(new), 66(0), 67(old) */
YAHOO_SERVICE_CHATONLINE = 0x96, /* > 109(id), 1, 6(abcde) < 0,1*/
YAHOO_SERVICE_CHATGOTO,
YAHOO_SERVICE_CHATJOIN, /* > 1 104-room 129-1600326591 62-2 */
YAHOO_SERVICE_CHATLEAVE,
YAHOO_SERVICE_CHATEXIT = 0x9b,
YAHOO_SERVICE_CHATLOGOUT = 0xa0,
YAHOO_SERVICE_CHATPING,
YAHOO_SERVICE_COMMENT = 0xa8
};
/* Message flags */
enum yahoo_status {
YAHOO_STATUS_AVAILABLE = 0,
YAHOO_STATUS_BRB,
YAHOO_STATUS_BUSY,
YAHOO_STATUS_NOTATHOME,
YAHOO_STATUS_NOTATDESK,
YAHOO_STATUS_NOTINOFFICE,
YAHOO_STATUS_ONPHONE,
YAHOO_STATUS_ONVACATION,
YAHOO_STATUS_OUTTOLUNCH,
YAHOO_STATUS_STEPPEDOUT,
YAHOO_STATUS_INVISIBLE = 12,
YAHOO_STATUS_CUSTOM = 99,
YAHOO_STATUS_IDLE = 999,
YAHOO_STATUS_OFFLINE = 0x5a55aa56, /* don't ask */
YAHOO_STATUS_TYPING = 0x16
};
struct yahoo_rawpacket
{
char ymsg[4]; /* Packet identification string (YMSG) */
unsigned char version[4]; /* 4 bytes, little endian? */
unsigned char len[2]; /* length - little endian */
unsigned char service[2]; /* service - little endian */
unsigned char status[4]; /* Status - online, away etc.*/
unsigned char session_id[4]; /* Session ID */
char content[6]; /* 6 is the minimum size of the content */
};
static const value_string ymsg_service_vals[] = {
{YAHOO_SERVICE_LOGON, "Pager Logon"},
{YAHOO_SERVICE_LOGOFF, "Pager Logoff"},
{YAHOO_SERVICE_ISAWAY, "Is Away"},
{YAHOO_SERVICE_ISBACK, "Is Back"},
{YAHOO_SERVICE_IDLE, "Idle"},
{YAHOO_SERVICE_MESSAGE, "Message"},
{YAHOO_SERVICE_IDACT, "Activate Identity"},
{YAHOO_SERVICE_IDDEACT, "Deactivate Identity"},
{YAHOO_SERVICE_MAILSTAT, "Mail Status"},
{YAHOO_SERVICE_USERSTAT, "User Status"},
{YAHOO_SERVICE_NEWMAIL, "New Mail"},
{YAHOO_SERVICE_CHATINVITE, "Chat Invitation"},
{YAHOO_SERVICE_CALENDAR, "Calendar Reminder"},
{YAHOO_SERVICE_NEWPERSONALMAIL, "New Personals Mail"},
{YAHOO_SERVICE_NEWCONTACT, "New Friend"},
{YAHOO_SERVICE_ADDIDENT, "Add Identity"},
{YAHOO_SERVICE_ADDIGNORE, "Add Ignore"},
{YAHOO_SERVICE_PING, "Ping"},
{YAHOO_SERVICE_GOTGROUPRENAME, "YAHOO_SERVICE_GOTGROUPRENAME"},
{YAHOO_SERVICE_SYSMESSAGE, "System Message"},
{YAHOO_SERVICE_PASSTHROUGH2, "Passthrough 2"},
{YAHOO_SERVICE_CONFINVITE, "Conference Invitation"},
{YAHOO_SERVICE_CONFLOGON, "Conference Logon"},
{YAHOO_SERVICE_CONFDECLINE, "Conference Decline"},
{YAHOO_SERVICE_CONFLOGOFF, "Conference Logoff"},
{YAHOO_SERVICE_CONFADDINVITE, "Conference Additional Invitation"},
{YAHOO_SERVICE_CONFMSG, "Conference Message"},
{YAHOO_SERVICE_CHATLOGON, "Chat Logon"},
{YAHOO_SERVICE_CHATLOGOFF, "Chat Logoff"},
{YAHOO_SERVICE_CHATMSG, "Chat Message"},
{YAHOO_SERVICE_GAMELOGON, "Game Logon"},
{YAHOO_SERVICE_GAMELOGOFF, "Game Logoff"},
{YAHOO_SERVICE_GAMEMSG, "Game Message"},
{YAHOO_SERVICE_FILETRANSFER, "File Transfer"},
{YAHOO_SERVICE_VOICECHAT, "Voice Chat"},
{YAHOO_SERVICE_NOTIFY, "YAHOO_SERVICE_NOTIFY"},
{YAHOO_SERVICE_VERIFY, "YAHOO_SERVICE_VERIFY"},
{YAHOO_SERVICE_P2PFILEXFER, "YAHOO_SERVICE_P2PFILEXFER"},
{YAHOO_SERVICE_PEERTOPEER, "YAHOO_SERVICE_PEERTOPEER"},
{YAHOO_SERVICE_AUTHRESP, "YAHOO_SERVICE_AUTHRESP"},
{YAHOO_SERVICE_LIST, "YAHOO_SERVICE_LIST"},
{YAHOO_SERVICE_AUTH, "YAHOO_SERVICE_AUTH"},
{YAHOO_SERVICE_ADDBUDDY, "YAHOO_SERVICE_ADDBUDDY"},
{YAHOO_SERVICE_REMBUDDY, "YAHOO_SERVICE_REMBUDDY"},
{YAHOO_SERVICE_IGNORECONTACT, "YAHOO_SERVICE_IGNORECONTACT"},
{YAHOO_SERVICE_REJECTCONTACT, "YAHOO_SERVICE_REJECTCONTACT"},
{YAHOO_SERVICE_GROUPRENAME, "Group Renamed"},
{YAHOO_SERVICE_CHATONLINE, "YAHOO_SERVICE_CHATONLINE"},
{YAHOO_SERVICE_CHATGOTO, "YAHOO_SERVICE_CHATGOTO"},
{YAHOO_SERVICE_CHATJOIN, "YAHOO_SERVICE_CHATJOIN"},
{YAHOO_SERVICE_CHATLEAVE, "YAHOO_SERVICE_CHATLEAVE"},
{YAHOO_SERVICE_CHATEXIT, "YAHOO_SERVICE_CHATEXIT"},
{YAHOO_SERVICE_CHATLOGOUT, "YAHOO_SERVICE_CHATLOGOUT"},
{YAHOO_SERVICE_CHATPING, "YAHOO_SERVICE_CHATPING"},
{YAHOO_SERVICE_COMMENT, "YAHOO_SERVICE_COMMENT"},
{0, NULL}
};
static const value_string ymsg_status_vals[] = {
{YAHOO_STATUS_AVAILABLE, "YAHOO_STATUS_AVAILABLE"},
{YAHOO_STATUS_BRB, "YAHOO_STATUS_BRB"},
{YAHOO_STATUS_BUSY, "YAHOO_STATUS_BUSY"},
{YAHOO_STATUS_NOTATHOME, "YAHOO_STATUS_NOTATHOME"},
{YAHOO_STATUS_NOTATDESK, "YAHOO_STATUS_NOTATDESK"},
{YAHOO_STATUS_NOTINOFFICE, "YAHOO_STATUS_NOTINOFFICE"},
{YAHOO_STATUS_ONPHONE, "YAHOO_STATUS_ONPHONE"},
{YAHOO_STATUS_ONVACATION, "YAHOO_STATUS_ONVACATION"},
{YAHOO_STATUS_OUTTOLUNCH, "YAHOO_STATUS_OUTTOLUNCH"},
{YAHOO_STATUS_STEPPEDOUT, "YAHOO_STATUS_STEPPEDOUT"},
{YAHOO_STATUS_INVISIBLE, "YAHOO_STATUS_INVISIBLE"},
{YAHOO_STATUS_CUSTOM, "YAHOO_STATUS_CUSTOM"},
{YAHOO_STATUS_IDLE, "YAHOO_STATUS_IDLE"},
{YAHOO_STATUS_OFFLINE, "YAHOO_STATUS_OFFLINE"},
{YAHOO_STATUS_TYPING, "YAHOO_STATUS_TYPING"},
{0, NULL}
};
int
get_content_item_length(tvbuff_t *tvb, int offset) {
int origoffset = offset;
guint16 curdata;
for (;;) {
curdata = tvb_get_ntohs(tvb, offset);
if (curdata == 0xc080) {
break;
}
offset++;
}
return offset - origoffset;
}
static gboolean
dissect_ymsg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *ymsg_tree, *ti;
proto_item *content_item;
proto_tree *content_tree;
char *keybuf;
char *valbuf;
int headersize = sizeof(struct yahoo_rawpacket)-6;
int keylen = 0;
int vallen = 0;
int offset = 0;
int content_len = 0;
if (tvb_memeql(tvb, offset, "YMSG", 4) == -1) {
/* Not a Yahoo Messenger packet. */
return FALSE;
}
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "YMSG");
offset = 0;
if (check_col(pinfo->cinfo, COL_INFO)) {
col_add_fstr(pinfo->cinfo, COL_INFO,
"%s, %s",
val_to_str(tvb_get_ntohs(tvb, offset + 10),
ymsg_service_vals, "Unknown Service: %u"),
val_to_str(tvb_get_ntohl(tvb, offset + 12),
ymsg_status_vals, "Unknown Status: %u")
);
}
if (tree) {
ti = proto_tree_add_item(tree, proto_ymsg, tvb, offset, -1,
FALSE);
ymsg_tree = proto_item_add_subtree(ti, ett_ymsg);
offset += 4; /* skip the YMSG string */
proto_tree_add_item(ymsg_tree, hf_ymsg_version, tvb,
offset, 2, FALSE);
offset += 2;
offset += 2; /* XXX - padding? */
content_len = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(ymsg_tree, hf_ymsg_len, tvb,
offset, 2, FALSE);
offset += 2;
proto_tree_add_item(ymsg_tree, hf_ymsg_service, tvb,
offset, 2, FALSE);
offset += 2;
proto_tree_add_item(ymsg_tree, hf_ymsg_status, tvb,
offset, 4, FALSE);
offset += 4;
proto_tree_add_item(ymsg_tree, hf_ymsg_session_id, tvb,
offset, 4, TRUE);
offset += 4;
content_item = proto_tree_add_item(ymsg_tree, hf_ymsg_content, tvb,
offset, -1, TRUE);
content_tree = proto_item_add_subtree(content_item, ett_ymsg_content);
for (;;) {
if (offset >= headersize+content_len) {
break;
}
keylen = get_content_item_length (tvb, offset);
keybuf = tvb_format_text(tvb, offset, keylen);
vallen = get_content_item_length (tvb, offset+keylen+2);
content_item = proto_tree_add_text(content_tree, tvb, offset, keylen+vallen+4, "%s: ", keybuf);
valbuf = tvb_format_text(tvb, offset+keylen+2, vallen);
proto_item_append_text(content_item, "%s", valbuf);
offset += keylen+vallen+4;
}
}
return TRUE;
}
void
proto_register_ymsg(void)
{
static hf_register_info hf[] = {
{ &hf_ymsg_version, {
"Version", "ymsg.version", FT_UINT16, BASE_DEC,
NULL, 0, "Packet version identifier", HFILL }},
{ &hf_ymsg_len, {
"Packet Length", "ymsg.len", FT_UINT16, BASE_DEC,
NULL, 0, "Packet Length", HFILL }},
{ &hf_ymsg_service, {
"Service", "ymsg.service", FT_UINT16, BASE_DEC,
VALS(ymsg_service_vals), 0, "Service Type", HFILL }},
{ &hf_ymsg_status, {
"Status", "ymsg.status", FT_UINT32, BASE_DEC,
VALS(ymsg_status_vals), 0, "Message Type Flags", HFILL }},
{ &hf_ymsg_session_id, {
"Session ID", "ymsg.session_id", FT_UINT32, BASE_HEX,
NULL, 0, "Connection ID", HFILL }},
{ &hf_ymsg_content, {
"Content", "ymsg.content", FT_STRING, 0,
NULL, 0, "Data portion of the packet", HFILL }},
};
static gint *ett[] = {
&ett_ymsg,
&ett_ymsg_content,
};
proto_ymsg = proto_register_protocol("Yahoo YMSG Messenger Protocol",
"YMSG", "ymsg");
proto_register_field_array(proto_ymsg, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_ymsg(void)
{
/*
* DO NOT register for port 23, as that's Telnet, or for port
* 25, as that's SMTP.
*
* Also, DO NOT register for port 5050, as that's used by the
* old and new Yahoo messenger protocols.
*
* Just register as a heuristic TCP dissector, and reject stuff
* not to or from any of those ports.
*/
heur_dissector_add("tcp", dissect_ymsg, proto_ymsg);
}
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