epan/dissectors/packet-aim-messaging.c

   1 /* packet-aim-messaging.c
   2  * Routines for AIM Instant Messenger (OSCAR) dissection, SNAC Messaging
   3  * Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
   4  * Copyright 2000, Ralf Hoelzer <ralf@well.com>
   5  * Copyright 2004, Devin Heitmueller <dheitmueller@netilla.com>
   6  *
   7  * $Id$
   8  *
   9  * Wireshark - Network traffic analyzer
  10  * By Gerald Combs <gerald@wireshark.org>
  11  * Copyright 1998 Gerald Combs
  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
  33 #include <glib.h>
  34
  35 #include <string.h>
  36
  37 #include <epan/packet.h>
  38 #include <epan/strutil.h>
  39
  40 #include "packet-aim.h"
  41
  42 #define FAMILY_MESSAGING  0x0004
  43
  44
  45 #define INCOMING_CH1_MESSAGE_BLOCK     0x0002
  46 #define INCOMING_CH1_SERVER_ACK_REQ    0x0003
  47 #define INCOMING_CH1_MESSAGE_AUTH_RESP 0x0004
  48 #define INCOMING_CH1_MESSAGE_OFFLINE   0x0006
  49 #define INCOMING_CH1_ICON_PRESENT      0x0008
  50 #define INCOMING_CH1_BUDDY_REQ         0x0009
  51 #define INCOMING_CH1_TYPING            0x000b
  52
  53 static const aim_tlv aim_messaging_incoming_ch1_tlvs[] = {
  54         { INCOMING_CH1_MESSAGE_BLOCK, "Message Block", dissect_aim_tlv_value_messageblock },
  55         { INCOMING_CH1_SERVER_ACK_REQ, "Server Ack Requested", dissect_aim_tlv_value_bytes },
  56         { INCOMING_CH1_MESSAGE_AUTH_RESP, "Message is Auto Response", dissect_aim_tlv_value_bytes },
  57         { INCOMING_CH1_MESSAGE_OFFLINE, "Message was received offline", dissect_aim_tlv_value_bytes },
  58         { INCOMING_CH1_ICON_PRESENT, "Icon present", dissect_aim_tlv_value_bytes },
  59         { INCOMING_CH1_BUDDY_REQ, "Buddy Req", dissect_aim_tlv_value_bytes },
  60         { INCOMING_CH1_TYPING, "Non-direct connect typing notification", dissect_aim_tlv_value_bytes },
  61         { 0, NULL, NULL },
  62 };
  63
  64 static int dissect_aim_tlv_value_rendezvous(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo);
  65 static int dissect_aim_tlv_value_extended_data(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_);
  66
  67 #define ICBM_CHANNEL_IM         0x0001
  68 #define ICBM_CHANNEL_RENDEZVOUS 0x0002
  69
  70 static const value_string icbm_channel_types[] = {
  71         { ICBM_CHANNEL_IM, "IM" },
  72         { ICBM_CHANNEL_RENDEZVOUS, "Rendezvous" },
  73         { 0, NULL },
  74 };
  75
  76 #define INCOMING_CH2_SERVER_ACK_REQ        0x0003
  77 #define INCOMING_CH2_RENDEZVOUS_DATA       0x0005
  78
  79 static const aim_tlv aim_messaging_incoming_ch2_tlvs[] = {
  80         { INCOMING_CH2_SERVER_ACK_REQ, "Server Ack Requested", dissect_aim_tlv_value_bytes },
  81         { INCOMING_CH2_RENDEZVOUS_DATA, "Rendez Vous Data", dissect_aim_tlv_value_rendezvous },
  82         { 0, NULL, NULL },
  83 };
  84
  85 #define RENDEZVOUS_TLV_CHANNEL                          0x0001
  86 #define RENDEZVOUS_TLV_IP_ADDR                          0x0002
  87 #define RENDEZVOUS_TLV_INT_IP                           0x0003
  88 #define RENDEZVOUS_TLV_EXT_IP                           0x0004
  89 #define RENDEZVOUS_TLV_EXT_PORT                         0x0005
  90 #define RENDEZVOUS_TLV_DOWNLOAD_URL                     0x0006
  91 #define RENDEZVOUS_TLV_VERIFIED_DOWNLOAD_URL            0x0008
  92 #define RENDEZVOUS_TLV_SEQ_NUM                          0x000A
  93 #define RENDEZVOUS_TLV_CANCEL_REASON                    0x000B
  94 #define RENDEZVOUS_TLV_INVITATION                       0x000C
  95 #define RENDEZVOUS_TLV_INVITE_MIME_CHARSET              0x000D
  96 #define RENDEZVOUS_TLV_INVITE_MIME_LANG                 0x000E
  97 #define RENDEZVOUS_TLV_REQ_HOST_CHECK                   0x000F
  98 #define RENDEZVOUS_TLV_REQ_USE_ARS                      0x0010
  99 #define RENDEZVOUS_TLV_REQ_SECURE                       0x0011
 100 #define RENDEZVOUS_TLV_MAX_PROTOCOL_VER                 0x0012
 101 #define RENDEZVOUS_TLV_MIN_PROTOCOL_VER                 0x0013
 102 #define RENDEZVOUS_TLV_COUNTER_REASON                   0x0014
 103 #define RENDEZVOUS_TLV_INVITE_MIME_TYPE                 0x0015
 104 #define RENDEZVOUS_TLV_IP_ADDR_XOR                      0x0016
 105 #define RENDEZVOUS_TLV_PORT_XOR                         0x0017
 106 #define RENDEZVOUS_TLV_ADDR_LIST                        0x0018
 107 #define RENDEZVOUS_TLV_SESSION_ID                       0x0019
 108 #define RENDEZVOUS_TLV_ROLLOVER_ID                      0x001A
 109 #define RENDEZVOUS_TLV_EXTENDED_DATA                    0x2711
 110 #define RENDEZVOUS_TLV_ICHAT_INVITEES_DATA              0x277E
 111
 112 static const aim_tlv aim_rendezvous_tlvs[] = {
 113         { RENDEZVOUS_TLV_CHANNEL, "Rendezvous ICBM Channel", dissect_aim_tlv_value_uint16 },
 114         { RENDEZVOUS_TLV_IP_ADDR, "Rendezvous IP", dissect_aim_tlv_value_ipv4 },
 115         { RENDEZVOUS_TLV_INT_IP, "Internal IP", dissect_aim_tlv_value_ipv4 },
 116         { RENDEZVOUS_TLV_EXT_IP, "External IP", dissect_aim_tlv_value_ipv4 },
 117         { RENDEZVOUS_TLV_EXT_PORT, "External Port", dissect_aim_tlv_value_uint16 },
 118         { RENDEZVOUS_TLV_DOWNLOAD_URL, "Service Support Download URL", dissect_aim_tlv_value_string },
 119         { RENDEZVOUS_TLV_VERIFIED_DOWNLOAD_URL, "Verified Service Support Download URL", dissect_aim_tlv_value_string },
 120         { RENDEZVOUS_TLV_SEQ_NUM, "Sequence Number", dissect_aim_tlv_value_uint16 },
 121         { RENDEZVOUS_TLV_CANCEL_REASON, "Cancel Reason", dissect_aim_tlv_value_uint16 },
 122         { RENDEZVOUS_TLV_INVITATION, "Invitation Text", dissect_aim_tlv_value_string },
 123         { RENDEZVOUS_TLV_INVITE_MIME_CHARSET, "Data MIME Type", dissect_aim_tlv_value_string },
 124         { RENDEZVOUS_TLV_INVITE_MIME_LANG, "Data Language", dissect_aim_tlv_value_string },
 125         { RENDEZVOUS_TLV_REQ_HOST_CHECK, "Request Host Check", NULL },
 126         { RENDEZVOUS_TLV_REQ_USE_ARS, "Request Data via Rendezvous Server", NULL },
 127         { RENDEZVOUS_TLV_REQ_SECURE, "Request SSL Connection", NULL },
 128         { RENDEZVOUS_TLV_MAX_PROTOCOL_VER, "Maximum Protocol Version", dissect_aim_tlv_value_uint16 },
 129         { RENDEZVOUS_TLV_MIN_PROTOCOL_VER, "Minimum Protocol Version", dissect_aim_tlv_value_uint16 },
 130         { RENDEZVOUS_TLV_COUNTER_REASON, "Counter Proposal Reason", dissect_aim_tlv_value_uint16 },
 131         { RENDEZVOUS_TLV_INVITE_MIME_TYPE, "Data MIME Type", dissect_aim_tlv_value_string },
 132         { RENDEZVOUS_TLV_IP_ADDR_XOR, "XORed Rendezvous IP", dissect_aim_tlv_value_ipv4 },
 133         { RENDEZVOUS_TLV_PORT_XOR, "XORed Port", dissect_aim_tlv_value_uint16 },
 134         { RENDEZVOUS_TLV_ADDR_LIST, "Address/Port List", dissect_aim_tlv_value_string08_array },
 135         { RENDEZVOUS_TLV_SESSION_ID, "Session ID", dissect_aim_tlv_value_string },
 136         { RENDEZVOUS_TLV_ROLLOVER_ID, "Rollover ID", dissect_aim_tlv_value_string },
 137 /*
 138         The dissect_aim_tlv_value_extended_data function does not work for iChat generated rendezvous data
 139         { RENDEZVOUS_TLV_EXTENDED_DATA, "Extended Data", dissect_aim_tlv_value_extended_data },
 140 */
 141         { RENDEZVOUS_TLV_EXTENDED_DATA, "Extended Data", NULL },
 142         { RENDEZVOUS_TLV_ICHAT_INVITEES_DATA, "iChat Invitees Data", NULL },
 143         { 0, NULL, NULL },
 144 };
 145
 146 #define MINITYPING_FINISHED_SIGN                        0x0000
 147 #define MINITYPING_TEXT_TYPED_SIGN                      0x0001
 148 #define MINITYPING_BEGUN_SIGN                           0x0002
 149
 150 static const value_string minityping_type[] _U_ = {
 151         {MINITYPING_FINISHED_SIGN, "Typing finished sign" },
 152         {MINITYPING_TEXT_TYPED_SIGN, "Text typed sign" },
 153         {MINITYPING_BEGUN_SIGN, "Typing begun sign" },
 154         {0, NULL }
 155 };
 156
 157 #define RENDEZVOUS_MSG_REQUEST          0
 158 #define RENDEZVOUS_MSG_CANCEL           1
 159 #define RENDEZVOUS_MSG_ACCEPT           2
 160
 161 static const value_string rendezvous_msg_types[] = {
 162         { RENDEZVOUS_MSG_REQUEST, "Request" },
 163         { RENDEZVOUS_MSG_CANCEL, "Cancel" },
 164         { RENDEZVOUS_MSG_ACCEPT, "Accept" },
 165         { 0, NULL },
 166 };
 167
 168 #define CLIENT_ERR__REASON_UNSUPPORTED_CHANNEL  1
 169 #define CLIENT_ERR__REASON_BUSTED_PAYLOAD       2
 170 #define CLIENT_ERR__REASON_CHANNEL_SPECIFIC     3
 171
 172 static const value_string client_err_reason_types[] = {
 173         { CLIENT_ERR__REASON_UNSUPPORTED_CHANNEL, "Unsupported Channel" },
 174         { CLIENT_ERR__REASON_BUSTED_PAYLOAD, "Busted Payload" },
 175         { CLIENT_ERR__REASON_CHANNEL_SPECIFIC, "Channel Specific Error" },
 176         { 0, NULL },
 177 };
 178
 179 #define RENDEZVOUS_NAK_PROPOSAL_UNSUPPORTED 0
 180 #define RENDEZVOUS_NAK_PROPOSAL_DENIED 1
 181 #define RENDEZVOUS_NAK_PROPOSAL_IGNORED 2
 182 #define RENDEZVOUS_NAK_BUSTED_PARAMETERS 3
 183 #define RENDEZVOUS_NAK_PROPOSAL_TIMED_OUT 4
 184 #define RENDEZVOUS_NAK_ONLINE_BUT_NOT_AVAILABLE 5
 185 #define RENDEZVOUS_NAK_INSUFFICIENT_RESOURCES 6
 186 #define RENDEZVOUS_NAK_RATE_LIMITED 7
 187 #define RENDEZVOUS_NAK_NO_DATA 8
 188 #define RENDEZVOUS_NAK_VERSION_MISMATCH 9
 189 #define RENDEZVOUS_NAK_SECURITY_MISMATCH 10
 190 #define RENDEZVOUS_NAK_SERVICE_SPECIFIC_REASON 15
 191
 192 static const value_string rendezvous_nak_reason_types[] = {
 193         { RENDEZVOUS_NAK_PROPOSAL_UNSUPPORTED, "Proposal UUID not supported" },
 194         { RENDEZVOUS_NAK_PROPOSAL_DENIED, "Not authorized, or user declined" },
 195         { RENDEZVOUS_NAK_PROPOSAL_IGNORED, "Proposal ignored" },
 196         { RENDEZVOUS_NAK_BUSTED_PARAMETERS, "Proposal malformed" },
 197         { RENDEZVOUS_NAK_PROPOSAL_TIMED_OUT, "Attempt to act on proposal (e.g. connect) timed out" },
 198         { RENDEZVOUS_NAK_ONLINE_BUT_NOT_AVAILABLE, "Recipient away or busy" },
 199         { RENDEZVOUS_NAK_INSUFFICIENT_RESOURCES, "Recipient had internal error" },
 200         { RENDEZVOUS_NAK_RATE_LIMITED, "Recipient was ratelimited" },
 201         { RENDEZVOUS_NAK_NO_DATA, "Recipient had nothing to send" },
 202         { RENDEZVOUS_NAK_VERSION_MISMATCH, "Incompatible versions" },
 203         { RENDEZVOUS_NAK_SECURITY_MISMATCH, "Incompatible security settings" },
 204         { RENDEZVOUS_NAK_SERVICE_SPECIFIC_REASON, "Service-specific reject defined by client" },
 205         { 0, NULL },
 206 };
 207
 208 #define EXTENDED_DATA_MTYPE_PLAIN 0x01
 209 #define EXTENDED_DATA_MTYPE_CHAT 0x02
 210 #define EXTENDED_DATA_MTYPE_FILEREQ 0x03
 211 #define EXTENDED_DATA_MTYPE_URL 0x04
 212 #define EXTENDED_DATA_MTYPE_AUTHREQ 0x06
 213 #define EXTENDED_DATA_MTYPE_AUTHDENY 0x07
 214 #define EXTENDED_DATA_MTYPE_AUTHOK 0x08
 215 #define EXTENDED_DATA_MTYPE_SERVER 0x09
 216 #define EXTENDED_DATA_MTYPE_ADDED 0x0C
 217 #define EXTENDED_DATA_MTYPE_WWP 0x0D
 218 #define EXTENDED_DATA_MTYPE_EEXPRESS 0x0E
 219 #define EXTENDED_DATA_MTYPE_CONTACTS 0x13
 220 #define EXTENDED_DATA_MTYPE_PLUGIN 0x1A
 221 #define EXTENDED_DATA_MTYPE_AUTOAWAY 0xE8
 222 #define EXTENDED_DATA_MTYPE_AUTOBUSY 0xE9
 223 #define EXTENDED_DATA_MTYPE_AUTONA 0xEA
 224 #define EXTENDED_DATA_MTYPE_AUTODND 0xEB
 225 #define EXTENDED_DATA_MTYPE_AUTOFFC 0xEC
 226
 227 static const value_string extended_data_message_types[] = {
 228         {EXTENDED_DATA_MTYPE_PLAIN, "Plain text (simple) message"},
 229         {EXTENDED_DATA_MTYPE_CHAT, "Chat request message"},
 230         {EXTENDED_DATA_MTYPE_FILEREQ, "File request / file ok message"},
 231         {EXTENDED_DATA_MTYPE_URL, "URL message (0xFE formatted)"},
 232         {EXTENDED_DATA_MTYPE_AUTHREQ, "Authorization request message (0xFE formatted)"},
 233         {EXTENDED_DATA_MTYPE_AUTHDENY, "Authorization denied message (0xFE formatted)"},
 234         {EXTENDED_DATA_MTYPE_AUTHOK, "Authorization given message (empty)"},
 235         {EXTENDED_DATA_MTYPE_SERVER, "Message from OSCAR server (0xFE formatted)"},
 236         {EXTENDED_DATA_MTYPE_ADDED, "\"You-were-added\" message (0xFE formatted)"},
 237         {EXTENDED_DATA_MTYPE_WWP, "Web pager message (0xFE formatted)"},
 238         {EXTENDED_DATA_MTYPE_EEXPRESS, "Email express message (0xFE formatted)"},
 239         {EXTENDED_DATA_MTYPE_CONTACTS, "Contact list message"},
 240         {EXTENDED_DATA_MTYPE_PLUGIN, "Plugin message described by text string"},
 241         {EXTENDED_DATA_MTYPE_AUTOAWAY, "Auto away message"},
 242         {EXTENDED_DATA_MTYPE_AUTOBUSY, "Auto occupied message"},
 243         {EXTENDED_DATA_MTYPE_AUTONA, "Auto not available message"},
 244         {EXTENDED_DATA_MTYPE_AUTODND, "Auto do not disturb message"},
 245         {EXTENDED_DATA_MTYPE_AUTOFFC, "Auto free for chat message"},
 246         { 0, NULL },
 247 };
 248
 249 #define EXTENDED_DATA_MFLAG_NORMAL 0x01
 250 #define EXTENDED_DATA_MFLAG_AUTO 0x03
 251 #define EXTENDED_DATA_MFLAG_MULTI 0x80
 252
 253 #define EVIL_ORIGIN_ANONYMOUS           1
 254 #define EVIL_ORIGIN_NONANONYMOUS        2
 255
 256 static const value_string evil_origins[] = {
 257         {EVIL_ORIGIN_ANONYMOUS, "Anonymous"},
 258         {EVIL_ORIGIN_NONANONYMOUS, "Non-Anonymous"},
 259         {0, NULL },
 260 };
 261
 262 /* Initialize the protocol and registered fields */
 263 static int proto_aim_messaging = -1;
 264 static int hf_aim_icbm_channel = -1;
 265 static int hf_aim_icbm_cookie = -1;
 266 static int hf_aim_icbm_msg_flags = -1;
 267 static int hf_aim_icbm_max_sender_warnlevel = -1;
 268 static int hf_aim_icbm_max_receiver_warnlevel = -1;
 269 static int hf_aim_icbm_max_snac_size = -1;
 270 static int hf_aim_icbm_min_msg_interval = -1;
 271 static int hf_aim_icbm_notification_cookie = -1;
 272 static int hf_aim_icbm_notification_channel = -1;
 273 static int hf_aim_icbm_notification_type = -1;
 274 static int hf_aim_icbm_rendezvous_nak = -1;
 275 static int hf_aim_icbm_rendezvous_nak_length = -1;
 276 static int hf_aim_message_channel_id = -1;
 277 static int hf_aim_icbm_evil = -1;
 278 static int hf_aim_evil_warn_level = -1;
 279 static int hf_aim_evil_new_warn_level = -1;
 280 static int hf_aim_rendezvous_msg_type = -1;
 281 static int hf_aim_icbm_client_err_reason = -1;
 282 static int hf_aim_icbm_client_err_protocol_version = -1;
 283 static int hf_aim_icbm_client_err_client_caps_flags = -1;
 284 static int hf_aim_rendezvous_extended_data_message_type = -1;
 285 static int hf_aim_rendezvous_extended_data_message_flags = -1;
 286 static int hf_aim_rendezvous_extended_data_message_flags_normal = -1;
 287 static int hf_aim_rendezvous_extended_data_message_flags_auto = -1;
 288 static int hf_aim_rendezvous_extended_data_message_flags_multi = -1;
 289 static int hf_aim_rendezvous_extended_data_message_status_code = -1;
 290 static int hf_aim_rendezvous_extended_data_message_priority_code = -1;
 291 static int hf_aim_rendezvous_extended_data_message_text_length = -1;
 292 static int hf_aim_rendezvous_extended_data_message_text = -1;
 293
 294 /* Initialize the subtree pointers */
 295 static gint ett_aim_messaging = -1;
 296 static gint ett_aim_rendezvous_data = -1;
 297 static gint ett_aim_extended_data = -1;
 298 static gint ett_aim_extended_data_message_flags = -1;
 299
 300 static int
 301 dissect_aim_tlv_value_rendezvous(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo)
 302 {
 303         int offset = 0;
 304         proto_tree *entry = proto_item_add_subtree(ti, ett_aim_rendezvous_data);
 305     proto_tree_add_item(entry, hf_aim_rendezvous_msg_type, tvb, offset, 2, ENC_BIG_ENDIAN);
 306         offset+=2;
 307
 308     proto_tree_add_item(entry, hf_aim_icbm_cookie, tvb, offset, 8, ENC_BIG_ENDIAN);
 309         offset += 8;
 310
 311         offset = dissect_aim_capability(entry, tvb, offset);
 312
 313         return dissect_aim_tlv_sequence(tvb, pinfo, offset, entry,
 314                                                         aim_rendezvous_tlvs);
 315 }
 316
 317 static int
 318 dissect_aim_msg_outgoing(tvbuff_t *tvb, packet_info *pinfo, proto_tree *msg_tree)
 319 {
 320         int offset = 0;
 321         const aim_tlv *aim_ch_tlvs = NULL;
 322         guint16 channel_id;
 323         guchar buddyname[MAX_BUDDYNAME_LENGTH+1];
 324         int buddyname_length;
 325
 326         /* ICBM Cookie */
 327     proto_tree_add_item(msg_tree, hf_aim_icbm_cookie, tvb, offset, 8, ENC_BIG_ENDIAN);
 328         offset += 8;
 329
 330         /* Message Channel ID */
 331         channel_id = tvb_get_ntohs(tvb, offset);
 332         proto_tree_add_item(msg_tree, hf_aim_message_channel_id, tvb, offset, 2,
 333                         ENC_BIG_ENDIAN);
 334         offset += 2;
 335
 336         /* Add the outgoing username to the info column */
 337         buddyname_length = aim_get_buddyname(buddyname, tvb, offset,
 338                                                           offset + 1);
 339         col_append_fstr(pinfo->cinfo, COL_INFO, " to: %s",
 340                             format_text(buddyname, buddyname_length));
 341
 342         offset = dissect_aim_buddyname(tvb, pinfo, offset, msg_tree);
 343
 344         switch(channel_id) {
 345         case ICBM_CHANNEL_IM: aim_ch_tlvs = aim_messaging_incoming_ch1_tlvs; break;
 346         case ICBM_CHANNEL_RENDEZVOUS: aim_ch_tlvs = aim_messaging_incoming_ch2_tlvs; break;
 347         default: return offset;
 348         }
 349
 350         return dissect_aim_tlv_sequence(tvb, pinfo, offset, msg_tree, aim_ch_tlvs);
 351 }
 352
 353
 354 static int
 355 dissect_aim_msg_incoming(tvbuff_t *tvb, packet_info *pinfo, proto_tree *msg_tree)
 356 {
 357         int offset = 0;
 358         const aim_tlv *aim_ch_tlvs;
 359         guint16 channel_id;
 360
 361         /* ICBM Cookie */
 362     proto_tree_add_item(msg_tree, hf_aim_icbm_cookie, tvb, offset, 8, ENC_BIG_ENDIAN);
 363         offset += 8;
 364
 365         /* Message Channel ID */
 366         proto_tree_add_item(msg_tree, hf_aim_message_channel_id, tvb, offset, 2,
 367                         ENC_BIG_ENDIAN);
 368         channel_id = tvb_get_ntohs(tvb, offset);
 369         offset += 2;
 370
 371         offset = dissect_aim_userinfo(tvb, pinfo, offset, msg_tree);
 372
 373         switch(channel_id) {
 374         case ICBM_CHANNEL_IM: aim_ch_tlvs = aim_messaging_incoming_ch1_tlvs; break;
 375         case ICBM_CHANNEL_RENDEZVOUS: aim_ch_tlvs = aim_messaging_incoming_ch2_tlvs; break;
 376         default: return offset;
 377         }
 378
 379         return dissect_aim_tlv_sequence(tvb, pinfo, offset, msg_tree, aim_ch_tlvs);
 380 }
 381
 382 static int
 383 dissect_aim_msg_params(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *msg_tree)
 384 {
 385         int offset = 0;
 386     proto_tree_add_item(msg_tree, hf_aim_icbm_channel, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 387     proto_tree_add_item(msg_tree, hf_aim_icbm_msg_flags, tvb, offset, 4, ENC_BIG_ENDIAN); offset+=4;
 388     proto_tree_add_item(msg_tree, hf_aim_icbm_max_snac_size, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 389     proto_tree_add_item(msg_tree, hf_aim_icbm_max_sender_warnlevel, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 390     proto_tree_add_item(msg_tree, hf_aim_icbm_max_receiver_warnlevel, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 391     proto_tree_add_item(msg_tree, hf_aim_icbm_min_msg_interval, tvb, offset, 4, ENC_BIG_ENDIAN); offset+=4;
 392         return offset;
 393 }
 394
 395 static int
 396 dissect_aim_msg_evil_req(tvbuff_t *tvb, packet_info *pinfo, proto_tree *msg_tree)
 397 {
 398         int offset = 0;
 399     proto_tree_add_item(msg_tree, hf_aim_icbm_evil, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 400         return dissect_aim_buddyname(tvb, pinfo, offset, msg_tree);
 401 }
 402
 403
 404 static int
 405 dissect_aim_msg_evil_repl(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *msg_tree)
 406 {
 407         int offset = 0;
 408     proto_tree_add_item(msg_tree, hf_aim_evil_warn_level, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 409     proto_tree_add_item(msg_tree, hf_aim_evil_new_warn_level, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 410         return offset;
 411 }
 412
 413 static int
 414 dissect_aim_msg_minityping(tvbuff_t *tvb, packet_info *pinfo, proto_tree *msg_tree)
 415 {
 416         int offset = 0;
 417     proto_tree_add_item(msg_tree,hf_aim_icbm_notification_cookie, tvb, offset, 8, ENC_BIG_ENDIAN); offset+=8;
 418     proto_tree_add_item(msg_tree,hf_aim_icbm_notification_channel, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 419         offset = dissect_aim_buddyname(tvb, pinfo, offset, msg_tree);
 420     proto_tree_add_item(msg_tree,hf_aim_icbm_notification_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 421         return offset;
 422 }
 423
 424 typedef struct _aim_client_plugin
 425 {
 426         const char *name;
 427         e_uuid_t uuid;
 428 } aim_client_plugin;
 429
 430 static const aim_client_plugin known_client_plugins[] = {
 431         { "None",
 432          {0x0, 0x0, 0x0,
 433                 {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}},
 434
 435         { "Status Manager",
 436          {0xD140CF10, 0xE94F, 0x11D3,
 437                 {0xBC, 0xD2, 0x00, 0x04, 0xAC, 0x96, 0xDD, 0x96}}},
 438
 439         { NULL, {0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } } }
 440 };
 441
 442 static const
 443 aim_client_plugin *aim_find_plugin ( e_uuid_t uuid)
 444 {
 445         int i;
 446
 447         for(i = 0; known_client_plugins[i].name; i++)
 448         {
 449                 const aim_client_plugin *plugin = &(known_client_plugins[i]);
 450
 451                 if(memcmp(&(plugin->uuid), &uuid, sizeof(e_uuid_t)) == 0)
 452                         return plugin;
 453         }
 454
 455         return NULL;
 456 }
 457
 458 static int
 459 dissect_aim_plugin(proto_tree *entry, tvbuff_t *tvb, int offset, e_uuid_t* out_plugin_uuid)
 460 {
 461         const aim_client_plugin *plugin = NULL;
 462         e_uuid_t uuid;
 463
 464         uuid.Data1 = tvb_get_ntohl(tvb, offset);
 465         uuid.Data2 = tvb_get_ntohs(tvb, offset+4);
 466         uuid.Data3 = tvb_get_ntohs(tvb, offset+6);
 467         tvb_memcpy(tvb, uuid.Data4, offset+8, 8);
 468         if (out_plugin_uuid)
 469                 *out_plugin_uuid = uuid;
 470
 471         plugin = aim_find_plugin(uuid);
 472
 473         proto_tree_add_text(entry, tvb, offset, 16,
 474                 "Plugin: %s {%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
 475                 plugin ? plugin->name:"Unknown", uuid.Data1, uuid.Data2,
 476                 uuid.Data3, uuid.Data4[0], uuid.Data4[1], uuid.Data4[2],
 477                 uuid.Data4[3], uuid.Data4[4],   uuid.Data4[5], uuid.Data4[6],
 478                         uuid.Data4[7]
 479         );
 480
 481         return offset+16;
 482 }
 483
 484 static int
 485 dissect_aim_rendezvous_extended_message(tvbuff_t *tvb, proto_tree *msg_tree)
 486 {
 487         guint8 /*message_type,*/message_flags;
 488         int offset = 0;
 489         proto_item *ti_flags;
 490         proto_tree *flags_entry;
 491         guint16 text_length;
 492         guint8* text;
 493
 494         /* TODO: parse and present message_type */
 495         /* message_type = tvb_get_guint8(tvb, offset); */
 496     proto_tree_add_item(msg_tree, hf_aim_rendezvous_extended_data_message_type, tvb, offset, 1, ENC_BIG_ENDIAN); offset+=1;
 497         message_flags = tvb_get_guint8(tvb, offset);
 498         ti_flags = proto_tree_add_item(msg_tree, hf_aim_rendezvous_extended_data_message_flags, tvb, offset, 1, message_flags);
 499         flags_entry = proto_item_add_subtree(ti_flags, ett_aim_extended_data_message_flags);
 500         proto_tree_add_boolean(flags_entry, hf_aim_rendezvous_extended_data_message_flags_normal, tvb, offset, 1, message_flags);
 501         proto_tree_add_boolean(flags_entry, hf_aim_rendezvous_extended_data_message_flags_auto, tvb, offset, 1, message_flags);
 502         proto_tree_add_boolean(flags_entry, hf_aim_rendezvous_extended_data_message_flags_multi, tvb, offset, 1, message_flags);
 503         offset+=1;
 504     proto_tree_add_item(msg_tree, hf_aim_rendezvous_extended_data_message_status_code, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 505     proto_tree_add_item(msg_tree, hf_aim_rendezvous_extended_data_message_priority_code, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 506         text_length = tvb_get_letohs(tvb, offset);
 507     proto_tree_add_item(msg_tree, hf_aim_rendezvous_extended_data_message_text_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 508         text = tvb_get_ephemeral_string(tvb, offset, text_length);
 509         proto_tree_add_text(msg_tree, tvb, offset, text_length, "Text: %s", text); offset+=text_length;
 510         offset = tvb->length;
 511
 512         return offset;
 513 }
 514
 515 static int
 516 is_uuid_null(e_uuid_t uuid)
 517 {
 518         return (uuid.Data1 == 0) &&
 519                (uuid.Data2 == 0) &&
 520                (uuid.Data3 == 0) &&
 521                (uuid.Data4[0] == 0) &&
 522                (uuid.Data4[1] == 0) &&
 523                (uuid.Data4[2] == 0) &&
 524                (uuid.Data4[3] == 0) &&
 525                (uuid.Data4[4] == 0) &&
 526                (uuid.Data4[5] == 0) &&
 527                (uuid.Data4[6] == 0) &&
 528                (uuid.Data4[7] == 0);
 529 }
 530
 531 static int
 532 dissect_aim_tlv_value_extended_data(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
 533 {
 534         int offset = 0;
 535         guint16 length/*, protocol_version*/;
 536         int start_offset;
 537         proto_tree *entry;
 538         e_uuid_t plugin_uuid;
 539
 540         entry = proto_item_add_subtree(ti, ett_aim_extended_data);
 541         length = tvb_get_letohs(tvb, offset);
 542         proto_tree_add_text(entry, tvb, offset, 2, "Length: %d", length); offset+=2;
 543         start_offset = offset;
 544         /* TODO: parse and present protocol version */
 545         /* protocol_version = tvb_get_ntohs(tvb, offset); */
 546     proto_tree_add_item(entry, hf_aim_icbm_client_err_protocol_version, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 547
 548         offset = dissect_aim_plugin(entry, tvb, offset, &plugin_uuid);
 549         proto_tree_add_text(entry, tvb, offset, 2, "Unknown"); offset += 2;
 550     proto_tree_add_item(entry, hf_aim_icbm_client_err_client_caps_flags, tvb, offset, 4, ENC_BIG_ENDIAN); offset+=4;
 551         proto_tree_add_text(entry, tvb, offset, 1, "Unknown");  offset += 1;
 552         proto_tree_add_text(entry, tvb, offset, 2, "Downcounter?"); offset += 2;
 553
 554         offset = start_offset + length;
 555
 556         length = tvb_get_letohs(tvb, offset);
 557         proto_tree_add_text(entry, tvb, offset, 2, "Length: %d", length); offset+=2;
 558         start_offset = offset;
 559         proto_tree_add_text(entry, tvb, offset, 2, "Downcounter?"); offset += 2;
 560         proto_tree_add_text(entry, tvb, offset, length-2, "Unknown");
 561         offset = start_offset + length;
 562
 563         if (is_uuid_null(plugin_uuid))
 564         {
 565                 /* a message follows */
 566                 tvbuff_t *subtvb = tvb_new_subset_remaining(tvb, offset);
 567                 offset += dissect_aim_rendezvous_extended_message(subtvb, entry);
 568         }
 569         else
 570         {
 571                 /* plugin-specific data follows */
 572                 proto_tree_add_text(entry, tvb, offset, -1, "Plugin-specific data");
 573         }
 574         offset = tvb->length;
 575
 576         return offset;
 577 }
 578
 579 static int
 580 dissect_aim_msg_ack(tvbuff_t *tvb, packet_info *pinfo, proto_tree *msg_tree)
 581 {
 582         int offset = 0;
 583
 584     proto_tree_add_item(msg_tree,hf_aim_icbm_cookie, tvb, offset, 8, ENC_BIG_ENDIAN); offset+=8;
 585
 586         proto_tree_add_item(msg_tree, hf_aim_message_channel_id, tvb, offset, 2,
 587                         ENC_BIG_ENDIAN); offset += 2;
 588
 589         offset = dissect_aim_buddyname(tvb, pinfo, offset, msg_tree);
 590
 591         return offset;
 592 }
 593
 594 static int
 595 dissect_aim_msg_client_err(tvbuff_t *tvb, packet_info *pinfo, proto_tree *msg_tree)
 596 {
 597         int offset = 0;
 598         guint16 channel, reason;
 599
 600     proto_tree_add_item(msg_tree,hf_aim_icbm_cookie, tvb, offset, 8, ENC_BIG_ENDIAN); offset+=8;
 601         channel = tvb_get_ntohs(tvb, offset);
 602     proto_tree_add_item(msg_tree,hf_aim_icbm_channel, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 603         offset = dissect_aim_buddyname(tvb, pinfo, offset, msg_tree);
 604         reason = tvb_get_ntohs(tvb, offset);
 605     proto_tree_add_item(msg_tree, hf_aim_icbm_client_err_reason, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 606
 607         if (reason == CLIENT_ERR__REASON_CHANNEL_SPECIFIC && tvb_length_remaining(tvb, offset) > 0)
 608         {
 609                 switch (channel)
 610                 {
 611                 case ICBM_CHANNEL_RENDEZVOUS:
 612             proto_tree_add_item(msg_tree, hf_aim_icbm_rendezvous_nak_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 613             proto_tree_add_item(msg_tree, hf_aim_icbm_rendezvous_nak, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2;
 614                         break;
 615
 616                 default:
 617                   {
 618                     tvbuff_t *subtvb = tvb_new_subset_remaining(tvb, offset);
 619                     proto_item *ti_extended_data = proto_tree_add_text(msg_tree, tvb, offset, -1, "Extended Data");
 620                     dissect_aim_tlv_value_extended_data(ti_extended_data, 0, subtvb, pinfo);
 621                     break;
 622                   }
 623                 }
 624         }
 625
 626         return offset;
 627 }
 628
 629 static const aim_subtype aim_fnac_family_messaging[] = {
 630         { 0x0001, "Error", dissect_aim_snac_error },
 631         { 0x0002, "Set ICBM Parameter", dissect_aim_msg_params },
 632         { 0x0003, "Reset ICBM Parameter", NULL },
 633         { 0x0004, "Request Parameter Info", NULL},
 634         { 0x0005, "Parameter Info", dissect_aim_msg_params },
 635         { 0x0006, "Outgoing", dissect_aim_msg_outgoing },
 636         { 0x0007, "Incoming", dissect_aim_msg_incoming },
 637         { 0x0008, "Evil Request", dissect_aim_msg_evil_req },
 638         { 0x0009, "Evil Response", dissect_aim_msg_evil_repl  },
 639         { 0x000a, "Missed Call", NULL },
 640         { 0x000b, "Client Error", dissect_aim_msg_client_err },
 641         { 0x000c, "Acknowledge", dissect_aim_msg_ack },
 642         { 0x0014, "Mini Typing Notifications (MTN)", dissect_aim_msg_minityping },
 643         { 0, NULL, NULL }
 644 };
 645
 646
 647
 648 /* Register the protocol with Wireshark */
 649 void
 650 proto_register_aim_messaging(void)
 651 {
 652
 653         /* Setup list of header fields */
 654         static hf_register_info hf[] = {
 655                 { &hf_aim_icbm_channel,
 656                         { "Channel", "aim_messaging.icbm.channel", FT_UINT16, BASE_HEX, VALS(icbm_channel_types), 0x0, NULL, HFILL },
 657                 },
 658                 { &hf_aim_icbm_msg_flags,
 659                         { "Message Flags", "aim_messaging.icbm.flags", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL },
 660                 },
 661                 { &hf_aim_icbm_max_snac_size,
 662                         { "Max SNAC Size", "aim_messaging.icbm.max_snac", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL },
 663                 },
 664                 { &hf_aim_icbm_max_sender_warnlevel,
 665                         { "Max sender warn level", "aim_messaging.icbm.max_sender_warn-level", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL },
 666                 },
 667                 { &hf_aim_icbm_max_receiver_warnlevel,
 668                         { "max receiver warn level", "aim_messaging.icbm.max_receiver_warnlevel", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL },
 669                 },
 670                 { &hf_aim_icbm_min_msg_interval,
 671                         { "Minimum message interval (milliseconds)", "aim_messaging.icbm.min_msg_interval", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL },
 672                 },
 673                 { &hf_aim_icbm_cookie,
 674                         { "ICBM Cookie", "aim_messaging.icbmcookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }
 675                 },
 676                 { &hf_aim_message_channel_id,
 677                         { "Message Channel ID", "aim_messaging.channelid", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }
 678                 },
 679                 { &hf_aim_icbm_evil,
 680                         { "Send Evil Bit As", "aim_messaging.evilreq.origin", FT_UINT16, BASE_DEC, VALS(evil_origins), 0x0, NULL, HFILL },
 681                 },
 682                 { &hf_aim_evil_warn_level,
 683                         { "Old warning level", "aim_messaging.evil.warn_level", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 684                 },
 685                 { &hf_aim_evil_new_warn_level,
 686                         { "New warning level", "aim_messaging.evil.new_warn_level", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 687                 },
 688                 { &hf_aim_icbm_notification_cookie,
 689                         { "Notification Cookie", "aim_messaging.notification.cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL },
 690                 },
 691                 { &hf_aim_icbm_notification_channel,
 692                         { "Notification Channel", "aim_messaging.notification.channel", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 693                 },
 694                 { &hf_aim_icbm_notification_type,
 695                         { "Notification Type", "aim_messaging.notification.type", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 696                 },
 697                 { &hf_aim_icbm_rendezvous_nak,
 698                         { "Rendezvous NAK reason", "aim_messaging.rendezvous_nak", FT_UINT16, BASE_HEX, VALS(rendezvous_nak_reason_types), 0x0, NULL, HFILL },
 699                 },
 700                 { &hf_aim_icbm_rendezvous_nak_length,
 701                         { "Rendezvous NAK reason length", "aim_messaging.rendezvous_nak_length", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL },
 702                 },
 703                 { &hf_aim_rendezvous_msg_type,
 704                         { "Message Type", "aim_messaging.rendezvous.msg_type", FT_UINT16, BASE_HEX, VALS(rendezvous_msg_types), 0x0, NULL, HFILL },
 705                 },
 706                 { &hf_aim_icbm_client_err_reason,
 707                         { "Reason", "aim_messaging.clienterr.reason", FT_UINT16, BASE_DEC, VALS(client_err_reason_types), 0x0, NULL, HFILL },
 708                 },
 709                 { &hf_aim_icbm_client_err_protocol_version,
 710                         { "Version", "aim_messaging.clienterr.protocol_version", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 711                 },
 712                 { &hf_aim_icbm_client_err_client_caps_flags,
 713                         { "Client Capabilities Flags", "aim_messaging.clienterr.client_caps_flags", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL },
 714                 },
 715                 { &hf_aim_rendezvous_extended_data_message_type,
 716                         { "Message Type", "aim_messaging.icbm.extended_data.message.type", FT_UINT8, BASE_HEX, VALS(extended_data_message_types), 0x0, NULL, HFILL },
 717                 },
 718                 { &hf_aim_rendezvous_extended_data_message_flags,
 719                         { "Message Flags", "aim_messaging.icbm.extended_data.message.flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL },
 720                 },
 721                 { &hf_aim_rendezvous_extended_data_message_flags_normal,
 722                         { "Normal Message", "aim_messaging.icbm.extended_data.message.flags.normal", FT_BOOLEAN, 16, TFS(&tfs_set_notset), EXTENDED_DATA_MFLAG_NORMAL, NULL, HFILL },
 723                 },
 724                 { &hf_aim_rendezvous_extended_data_message_flags_auto,
 725                         { "Auto Message", "aim_messaging.icbm.extended_data.message.flags.auto", FT_BOOLEAN, 16, TFS(&tfs_set_notset), EXTENDED_DATA_MFLAG_AUTO, NULL, HFILL },
 726                 },
 727                 { &hf_aim_rendezvous_extended_data_message_flags_multi,
 728                         { "Multiple Recipients Message", "aim_messaging.icbm.rendezvous.extended_data.message.flags.multi", FT_BOOLEAN, 16, TFS(&tfs_set_notset), EXTENDED_DATA_MFLAG_MULTI, NULL, HFILL },
 729                 },
 730                 { &hf_aim_rendezvous_extended_data_message_status_code,
 731                         { "Status Code", "aim_messaging.icbm.extended_data.message.status_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 732                 },
 733                 { &hf_aim_rendezvous_extended_data_message_priority_code,
 734                         { "Priority Code", "aim_messaging.icbm.extended_data.message.priority_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 735                 },
 736                 { &hf_aim_rendezvous_extended_data_message_text_length,
 737                         { "Text Length", "aim_messaging.icbm.extended_data.message.text_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 738                 },
 739                 { &hf_aim_rendezvous_extended_data_message_text,
 740                         { "Text", "aim_messaging.icbm.extended_data.message.text", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL },
 741                 }
 742         };
 743
 744         /* Setup protocol subtree array */
 745         static gint *ett[] = {
 746                 &ett_aim_messaging,
 747                 &ett_aim_rendezvous_data,
 748                 &ett_aim_extended_data,
 749                 &ett_aim_extended_data_message_flags
 750         };
 751
 752         /* Register the protocol name and description */
 753         proto_aim_messaging = proto_register_protocol("AIM Messaging", "AIM Messaging", "aim_messaging");
 754
 755         /* Required function calls to register the header fields and subtrees used */
 756         proto_register_field_array(proto_aim_messaging, hf, array_length(hf));
 757         proto_register_subtree_array(ett, array_length(ett));
 758 }
 759
 760 void
 761 proto_reg_handoff_aim_messaging(void)
 762 {
 763         aim_init_family(proto_aim_messaging, ett_aim_messaging, FAMILY_MESSAGING, aim_fnac_family_messaging);
 764 }