Squelch an MSVC++ complaint.
[obnox/wireshark/wip.git] / 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 1.18 2001/07/16 06:09:02 guy Exp $
6  *
7  * Ethereal - Network traffic analyzer
8  * By Gerald Combs <gerald@ethereal.com>
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(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
109 {
110         proto_tree      *yhoo_tree, *ti;
111         int offset = 0;
112         int length = 0;
113
114         if (!proto_is_protocol_enabled(proto_yhoo)) {
115                 return FALSE;
116         }
117   
118         if (pinfo->srcport != TCP_PORT_YHOO && pinfo->destport != TCP_PORT_YHOO) {
119                 /* Not the Yahoo port - not a Yahoo Messenger packet. */
120                 return FALSE;
121         }
122
123         /* get at least a full packet structure */
124         if ( !tvb_bytes_exist(tvb, 0, sizeof(struct yahoo_rawpacket)) ) {
125                 /* Not enough data captured; maybe it is a Yahoo
126                    Messenger packet, but it contains too little data to
127                    tell. */
128                 return FALSE;
129         }
130
131         length = tvb_length(tvb);
132
133         if (memcmp(tvb_get_ptr(tvb, offset, 4), "YPNS", 4) != 0 &&
134             memcmp(tvb_get_ptr(tvb, offset, 4), "YHOO", 4) != 0) {
135                 /* Not a Yahoo Messenger packet. */
136                 return FALSE;
137         }
138
139         if (check_col(pinfo->fd, COL_PROTOCOL))
140                 col_set_str(pinfo->fd, COL_PROTOCOL, "YHOO");
141
142         offset = 0;
143         if (check_col(pinfo->fd, COL_INFO)) {
144                 col_add_fstr(pinfo->fd, COL_INFO, 
145                         "%s: %s", 
146                         ( strncmp(tvb_get_ptr(tvb, offset + 0, 4), "YPNS", 4) == 0 ) ? "Request" : "Response",
147                         val_to_str(tvb_get_letohl(tvb, offset + 12),
148                                  yhoo_service_vals, "Unknown Service: %u")
149                 );
150         }
151
152         if (tree) {
153                 ti = proto_tree_add_item(tree, proto_yhoo, tvb, offset, 
154                         tvb_length_remaining(tvb, offset), FALSE);
155                 yhoo_tree = proto_item_add_subtree(ti, ett_yhoo);
156
157                 proto_tree_add_item(yhoo_tree, hf_yhoo_version, tvb, 
158                         offset, 8, TRUE);
159                 offset += 8;
160
161                 proto_tree_add_item(yhoo_tree, hf_yhoo_len, tvb, 
162                         offset, 4, TRUE);
163                 offset += 4;
164
165                 proto_tree_add_item(yhoo_tree, hf_yhoo_service, tvb, 
166                         offset, 4, TRUE);
167                 offset += 4;
168
169                 proto_tree_add_item(yhoo_tree, hf_yhoo_connection_id, tvb, 
170                         offset, 4, TRUE);
171                 offset += 4;
172
173                 proto_tree_add_item(yhoo_tree, hf_yhoo_magic_id, tvb, 
174                         offset, 4, TRUE);
175                 offset += 4;
176
177                 proto_tree_add_item(yhoo_tree, hf_yhoo_unknown1, tvb, 
178                         offset, 4, TRUE);
179                 offset += 4;
180
181                 proto_tree_add_item(yhoo_tree, hf_yhoo_msgtype, tvb, 
182                         offset, 4, TRUE);
183                 offset += 4;
184
185                 proto_tree_add_item(yhoo_tree, hf_yhoo_nick1, tvb, 
186                         offset, 36, TRUE);
187                 offset += 36;
188
189                 proto_tree_add_item(yhoo_tree, hf_yhoo_nick2, tvb, 
190                         offset, 36, TRUE);
191                 offset += 36;
192
193                 proto_tree_add_item(yhoo_tree, hf_yhoo_content, tvb, 
194                         offset, length-offset, TRUE);
195         }
196
197         return TRUE;
198 }
199
200 void
201 proto_register_yhoo(void)
202 {
203         static hf_register_info hf[] = {
204                         { &hf_yhoo_service, {   
205                                 "Service Type", "yhoo.service", FT_UINT32, BASE_DEC,
206                                 VALS(yhoo_service_vals), 0, "Service Type", HFILL }},
207                         { &hf_yhoo_msgtype, {   
208                                 "Message Type", "yhoo.msgtype", FT_UINT32, BASE_DEC,
209                                 VALS(yhoo_msgtype_vals), 0, "Message Type Flags", HFILL }},
210                         { &hf_yhoo_connection_id, {     
211                                 "Connection ID", "yhoo.connection_id", FT_UINT32, BASE_HEX,
212                                 NULL, 0, "Connection ID", HFILL }},
213                         { &hf_yhoo_magic_id, {  
214                                 "Magic ID", "yhoo.magic_id", FT_UINT32, BASE_HEX,
215                                 NULL, 0, "Magic ID", HFILL }},
216                         { &hf_yhoo_unknown1, {  
217                                 "Unknown 1", "yhoo.unknown1", FT_UINT32, BASE_HEX,
218                                 NULL, 0, "Unknown 1", HFILL }},
219                         { &hf_yhoo_len, {       
220                                 "Packet Length", "yhoo.len", FT_UINT32, BASE_DEC,
221                                 NULL, 0, "Packet Length", HFILL }},
222                         { &hf_yhoo_nick1, {     
223                                 "Real Nick (nick1)", "yhoo.nick1", FT_STRING, 0,
224                                 NULL, 0, "Real Nick (nick1)", HFILL }},
225                         { &hf_yhoo_nick2, {     
226                                 "Active Nick (nick2)", "yhoo.nick2", FT_STRING, 0,
227                                 NULL, 0, "Active Nick (nick2)", HFILL }},
228                         { &hf_yhoo_content, {   
229                                 "Content", "yhoo.content", FT_STRING, 0,
230                                 NULL, 0, "Data portion of the packet", HFILL }},
231                         { &hf_yhoo_version, {   
232                                 "Version", "yhoo.version", FT_STRING, 0,
233                                 NULL, 0, "Packet version identifier", HFILL }},
234         };
235         static gint *ett[] = {
236                 &ett_yhoo,
237         };
238
239         proto_yhoo = proto_register_protocol("Yahoo Messenger Protocol",
240             "YHOO", "yhoo");
241
242         proto_register_field_array(proto_yhoo, hf, array_length(hf));
243
244         proto_register_subtree_array(ett, array_length(ett));
245 }
246
247 void
248 proto_reg_handoff_yhoo(void)
249 {
250         heur_dissector_add("tcp", dissect_yhoo, proto_yhoo);
251 }