packet-yhoo.c

   1 /* packet-yhoo.c
   2  * Routines for yahoo messenger packet dissection
   3  * Copyright 1999, Nathan Neulinger <nneul@umr.edu>
   4  *
   5  * $Id: packet-yhoo.c,v 1.7 2000/05/11 08:15:57 gram Exp $
   6  *
   7  * Ethereal - Network traffic analyzer
   8  * By Gerald Combs <gerald@zing.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * Copied from packet-tftp.c
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26  */
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <stdio.h>
  33
  34 #ifdef HAVE_SYS_TYPES_H
  35 # include <sys/types.h>
  36 #endif
  37
  38 #ifdef HAVE_NETINET_IN_H
  39 # include <netinet/in.h>
  40 #endif
  41
  42 #include <string.h>
  43 #include <glib.h>
  44 #include "packet.h"
  45 #include "packet-yhoo.h"
  46
  47 static int proto_yhoo = -1;
  48 static int hf_yhoo_version = -1;
  49 static int hf_yhoo_len = -1;
  50 static int hf_yhoo_service = -1;
  51 static int hf_yhoo_connection_id = -1;
  52 static int hf_yhoo_magic_id = -1;
  53 static int hf_yhoo_unknown1 = -1;
  54 static int hf_yhoo_msgtype = -1;
  55 static int hf_yhoo_nick1 = -1;
  56 static int hf_yhoo_nick2 = -1;
  57 static int hf_yhoo_content = -1;
  58
  59 static gint ett_yhoo = -1;
  60
  61 #define TCP_PORT_YHOO   5050
  62
  63 static const value_string yhoo_service_vals[] = {
  64         {YAHOO_SERVICE_LOGON, "Pager Logon"},
  65         {YAHOO_SERVICE_LOGOFF, "Pager Logoff"},
  66         {YAHOO_SERVICE_ISAWAY, "Is Away"},
  67         {YAHOO_SERVICE_ISBACK, "Is Back"},
  68         {YAHOO_SERVICE_IDLE, "Idle"},
  69         {YAHOO_SERVICE_MESSAGE, "Message"},
  70         {YAHOO_SERVICE_IDACT, "Activate Identity"},
  71         {YAHOO_SERVICE_IDDEACT, "Deactivate Identity"},
  72         {YAHOO_SERVICE_MAILSTAT, "Mail Status"},
  73         {YAHOO_SERVICE_USERSTAT, "User Status"},
  74         {YAHOO_SERVICE_NEWMAIL, "New Mail"},
  75         {YAHOO_SERVICE_CHATINVITE, "Chat Invitation"},
  76         {YAHOO_SERVICE_CALENDAR, "Calendar Reminder"},
  77         {YAHOO_SERVICE_NEWPERSONALMAIL, "New Personals Mail"},
  78         {YAHOO_SERVICE_NEWCONTACT, "New Friend"},
  79         {YAHOO_SERVICE_GROUPRENAME, "Group Renamed"},
  80         {YAHOO_SERVICE_ADDIDENT, "Add Identity"},
  81         {YAHOO_SERVICE_ADDIGNORE, "Add Ignore"},
  82         {YAHOO_SERVICE_PING, "Ping"},
  83         {YAHOO_SERVICE_SYSMESSAGE, "System Message"},
  84         {YAHOO_SERVICE_CONFINVITE, "Conference Invitation"},
  85         {YAHOO_SERVICE_CONFLOGON, "Conference Logon"},
  86         {YAHOO_SERVICE_CONFDECLINE, "Conference Decline"},
  87         {YAHOO_SERVICE_CONFLOGOFF, "Conference Logoff"},
  88         {YAHOO_SERVICE_CONFMSG, "Conference Message"},
  89         {YAHOO_SERVICE_CONFADDINVITE, "Conference Additional Invitation"},
  90         {YAHOO_SERVICE_CHATLOGON, "Chat Logon"},
  91         {YAHOO_SERVICE_CHATLOGOFF, "Chat Logoff"},
  92         {YAHOO_SERVICE_CHATMSG, "Chat Message"},
  93         {YAHOO_SERVICE_FILETRANSFER, "File Transfer"},
  94         {YAHOO_SERVICE_PASSTHROUGH2, "Passthrough 2"},
  95         {0, NULL}
  96 };
  97
  98 static const value_string yhoo_msgtype_vals[] = {
  99         {YAHOO_MSGTYPE_NONE, "None"},
 100         {YAHOO_MSGTYPE_NORMAL, "Normal"},
 101         {YAHOO_MSGTYPE_BOUNCE, "Bounce"},
 102         {YAHOO_MSGTYPE_STATUS, "Status Update"},
 103         {YAHOO_MSGTYPE_OFFLINE, "Request Offline"},
 104         {0, NULL}
 105 };
 106
 107 static gboolean
 108 dissect_yhoo(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
 109 {
 110         proto_tree      *yhoo_tree, *ti;
 111         struct yahoo_rawpacket *pkt;
 112
 113         if (pi.srcport != TCP_PORT_YHOO && pi.destport != TCP_PORT_YHOO) {
 114                 /* Not the Yahoo port - not a Yahoo Messenger packet. */
 115                 return FALSE;
 116         }
 117
 118         /* get at least a full packet structure */
 119         if ( !BYTES_ARE_IN_FRAME(offset, sizeof(struct yahoo_rawpacket)) ) {
 120                 /* Not enough data captured; maybe it is a Yahoo
 121                    Messenger packet, but it contains too little data to
 122                    tell. */
 123                 return FALSE;
 124         }
 125
 126         if (memcmp(&pd[offset], "YPNS", 4) != 0 &&
 127             memcmp(&pd[offset], "YHOO", 4) != 0) {
 128                 /* Not a Yahoo Messenger packet. */
 129                 return FALSE;
 130         }
 131
 132         pkt = (struct yahoo_rawpacket *) &pd[offset];
 133
 134         if (check_col(fd, COL_PROTOCOL))
 135                 col_add_str(fd, COL_PROTOCOL, "YHOO");
 136
 137         if (check_col(fd, COL_INFO))
 138                 col_add_fstr(fd, COL_INFO,
 139                         "%s: %s",
 140                         ( strncmp(pkt->version, "YPNS", 4) == 0 ) ? "Request" : "Response",
 141                         val_to_str(pletohl(pkt->service),
 142                                  yhoo_service_vals, "Unknown Service: %u")
 143                 );
 144
 145         if (tree) {
 146                 ti = proto_tree_add_item(tree, proto_yhoo, NullTVB, offset, END_OF_FRAME, NULL);
 147                 yhoo_tree = proto_item_add_subtree(ti, ett_yhoo);
 148
 149                 proto_tree_add_item(yhoo_tree, hf_yhoo_version, NullTVB,
 150                         offset, 8, pkt->version);
 151                 proto_tree_add_item(yhoo_tree, hf_yhoo_len, NullTVB,
 152                         offset+8, 4, pletohl(pkt->len));
 153                 proto_tree_add_item(yhoo_tree, hf_yhoo_service, NullTVB,
 154                         offset+12, 4, pletohl(pkt->service));
 155                 proto_tree_add_item(yhoo_tree, hf_yhoo_connection_id, NullTVB,
 156                         offset+16, 4, pletohl(pkt->connection_id));
 157                 proto_tree_add_item(yhoo_tree, hf_yhoo_magic_id, NullTVB,
 158                         offset+20, 4, pletohl(pkt->magic_id));
 159                 proto_tree_add_item(yhoo_tree, hf_yhoo_unknown1, NullTVB,
 160                         offset+24, 4, pletohl(pkt->unknown1));
 161                 proto_tree_add_item(yhoo_tree, hf_yhoo_msgtype, NullTVB,
 162                         offset+28, 4, pletohl(pkt->msgtype));
 163                 proto_tree_add_item(yhoo_tree, hf_yhoo_nick1, NullTVB,
 164                         offset+32, 36, pkt->nick1);
 165                 proto_tree_add_item(yhoo_tree, hf_yhoo_nick2, NullTVB,
 166                         offset+68, 36, pkt->nick2);
 167                 proto_tree_add_item(yhoo_tree, hf_yhoo_content, NullTVB,
 168                         offset+104, END_OF_FRAME, pkt->content);
 169         }
 170
 171         return TRUE;
 172 }
 173
 174 void
 175 proto_register_yhoo(void)
 176 {
 177         static hf_register_info hf[] = {
 178                         { &hf_yhoo_service, {
 179                                 "Service Type", "yhoo.service", FT_UINT32, BASE_DEC,
 180                                 VALS(yhoo_service_vals), 0, "Service Type" }},
 181                         { &hf_yhoo_msgtype, {
 182                                 "Message Type", "yhoo.msgtype", FT_UINT32, BASE_DEC,
 183                                 VALS(yhoo_msgtype_vals), 0, "Message Type Flags" }},
 184                         { &hf_yhoo_connection_id, {
 185                                 "Connection ID", "yhoo.connection_id", FT_UINT32, BASE_HEX,
 186                                 NULL, 0, "Connection ID" }},
 187                         { &hf_yhoo_magic_id, {
 188                                 "Magic ID", "yhoo.magic_id", FT_UINT32, BASE_HEX,
 189                                 NULL, 0, "Magic ID" }},
 190                         { &hf_yhoo_unknown1, {
 191                                 "Unknown 1", "yhoo.unknown1", FT_UINT32, BASE_HEX,
 192                                 NULL, 0, "Unknown 1" }},
 193                         { &hf_yhoo_len, {
 194                                 "Packet Length", "yhoo.len", FT_UINT32, BASE_DEC,
 195                                 NULL, 0, "Packet Length" }},
 196                         { &hf_yhoo_nick1, {
 197                                 "Real Nick (nick1)", "yhoo.nick1", FT_STRING, 0,
 198                                 NULL, 0, "Real Nick (nick1)" }},
 199                         { &hf_yhoo_nick2, {
 200                                 "Active Nick (nick2)", "yhoo.nick2", FT_STRING, 0,
 201                                 NULL, 0, "Active Nick (nick2)" }},
 202                         { &hf_yhoo_content, {
 203                                 "Content", "yhoo.content", FT_STRING, 0,
 204                                 NULL, 0, "Data portion of the packet" }},
 205                         { &hf_yhoo_version, {
 206                                 "Version", "yhoo.version", FT_STRING, 0,
 207                                 NULL, 0, "Packet version identifier" }},
 208         };
 209         static gint *ett[] = {
 210                 &ett_yhoo,
 211         };
 212
 213         proto_yhoo = proto_register_protocol("Yahoo Messenger Protocol", "yhoo");
 214
 215         proto_register_field_array(proto_yhoo, hf, array_length(hf));
 216
 217         proto_register_subtree_array(ett, array_length(ett));
 218 }
 219
 220 void
 221 proto_reg_handoff_yhoo(void)
 222 {
 223         heur_dissector_add("tcp", dissect_yhoo);
 224 }