/* packet-icq.c * Routines for ICQ packet disassembly * * Wireshark - Network traffic analyzer * By Gerald Combs * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ /* * This file: by Kojak * * Decoding code ripped, reference to the original author at the * appropriate place with the code itself. */ #include "config.h" #include #include #include void proto_register_icq(void); void proto_reg_handoff_icq(void); static int proto_icq = -1; static int hf_icq_version = -1; static int hf_icq_uin = -1; static int hf_icq_client_cmd = -1; static int hf_icq_server_cmd = -1; static int hf_icq_sessionid = -1; static int hf_icq_checkcode = -1; static int hf_icq_type = -1; static int hf_icq_msg_type = -1; static int hf_icq_seqnum1 = -1; static int hf_icq_seqnum2 = -1; static int hf_icq_checkcode_key = -1; static int hf_icq_group = -1; static int hf_icq_ack_random = -1; static int hf_icq_keep_alive_random = -1; static int hf_icq_status = -1; static int hf_icq_meta_user_subcmd = -1; /* Generated from convert_proto_tree_add_text.pl */ static int hf_icq_rand_user_tcpversion = -1; static int hf_icq_meta_user_x3 = -1; static int hf_icq_user_online_realip = -1; static int hf_icq_rand_user_realip = -1; static int hf_icq_meta_user_hideip = -1; static int hf_icq_user_online_port = -1; static int hf_icq_user_online_ip = -1; static int hf_icq_num_uin_pairs = -1; static int hf_icq_x1 = -1; static int hf_icq_meta_user_timezone = -1; static int hf_icq_user_online_version = -1; static int hf_icq_receiver_uin = -1; static int hf_icq_text_code = -1; static int hf_icq_login_reply_ip = -1; static int hf_icq_rand_user_ip = -1; static int hf_icq_multi_num_packets = -1; static int hf_icq_number_of_uins = -1; static int hf_icq_meta_user_length = -1; static int hf_icq_text_code_length = -1; static int hf_icq_login_password = -1; static int hf_icq_meta_user_x2 = -1; static int hf_icq_login_time = -1; static int hf_icq_meta_user_countrycode = -1; static int hf_icq_msg_length = -1; static int hf_icq_meta_user_about = -1; static int hf_icq_meta_user_webaware = -1; static int hf_icq_rand_user_class = -1; static int hf_icq_rand_user_port = -1; static int hf_icq_meta_user_found_authorization = -1; static int hf_icq_meta_user_info_authorization = -1; static int hf_icq_no_parameters = -1; static int hf_icq_login_port = -1; static int hf_icq_meta_user_result = -1; static int hf_icq_login_ip = -1; static int hf_icq_msg_authorization = -1; static int hf_icq_msg = -1; static int hf_icq_nickname = -1; static int hf_icq_first_name = -1; static int hf_icq_last_name = -1; static int hf_icq_email = -1; static int hf_icq_nickname_uint_string = -1; static int hf_icq_first_name_uint_string = -1; static int hf_icq_last_name_uint_string = -1; static int hf_icq_email_uint_string = -1; static int hf_icq_primary_email = -1; static int hf_icq_secondary_email = -1; static int hf_icq_old_email = -1; static int hf_icq_city = -1; static int hf_icq_state = -1; static int hf_icq_phone = -1; static int hf_icq_fax = -1; static int hf_icq_street = -1; static int hf_icq_cellphone = -1; static int hf_icq_zip = -1; static int hf_icq_description = -1; static int hf_icq_url = -1; static int hf_icq_text = -1; static int hf_icq_unknown = -1; static int hf_icq_reason = -1; static int hf_icq_msg_contact = -1; static int hf_icq_recv_time = -1; static gint ett_icq = -1; static gint ett_icq_header = -1; static gint ett_icq_body = -1; static gint ett_icq_body_parts = -1; static expert_field ei_icq_unknown_meta_subcmd = EI_INIT; static expert_field ei_icq_unknown_command = EI_INIT; /* This is not IANA registered */ #define UDP_PORT_ICQ 4000 #define ICQ5_SERVER 0 #define ICQ5_CLIENT 1 static void dissect_icqv5Server(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, int pktsize); /* Offsets of fields in the ICQ headers */ /* Can be 0x0002 or 0x0005 */ #define ICQ_VERSION 0x00 /* Is either one (server) or four (client) bytes long */ /* Client header offsets */ #define ICQ5_UNKNOWN 0x02 #define ICQ5_CL_UIN 0x06 #define ICQ5_CL_SESSIONID 0x0a #define ICQ5_CL_CMD 0x0e #define ICQ5_CL_SEQNUM1 0x10 #define ICQ5_CL_SEQNUM2 0x12 #define ICQ5_CL_CHECKCODE 0x14 #define ICQ5_CL_PARAM 0x18 #define ICQ5_CL_HDRSIZE 0x18 /* Server header offsets */ #define ICQ5_SRV_SESSIONID 0x03 #define ICQ5_SRV_CMD 0x07 #define ICQ5_SRV_SEQNUM1 0x09 #define ICQ5_SRV_SEQNUM2 0x0b #define ICQ5_SRV_UIN 0x0d #define ICQ5_SRV_CHECKCODE 0x11 #define ICQ5_SRV_PARAM 0x15 #define ICQ5_SRV_HDRSIZE 0x15 #define SRV_ACK 0x000a #define SRV_SILENT_TOO_LONG 0x001e #define SRV_GO_AWAY 0x0028 #define SRV_NEW_UIN 0x0046 /* LOGIN_REPLY is very scary. It has a lot of fields that are undocumented * Only the IP field makes sense */ #define SRV_LOGIN_REPLY 0x005a #define SRV_LOGIN_REPLY_IP 0x000c #define SRV_BAD_PASS 0x0064 #define SRV_USER_ONLINE 0x006e #define SRV_USER_ONL_UIN 0x0000 #define SRV_USER_ONL_IP 0x0004 #define SRV_USER_ONL_PORT 0x0008 #define SRV_USER_ONL_REALIP 0x000c #define SRV_USER_ONL_X1 0x0010 #define SRV_USER_ONL_STATUS 0x0013 #define SRV_USER_ONL_X2 0x0015 #define SRV_USER_OFFLINE 0x0078 #define SRV_USER_OFFLINE_UIN 0x0000 #define SRV_MULTI 0x0212 #define SRV_MULTI_NUM 0x0000 #define SRV_META_USER 0x03de #define SRV_META_USER_SUBCMD 0x0000 #define SRV_META_USER_RESULT 0x0002 #define SRV_META_USER_DATA 0x0003 #define SRV_UPDATE_SUCCESS 0x01e0 #define SRV_UPDATE_FAIL 0x01ea /* * ICQv5 SRV_META_USER subcommands */ #define META_EX_USER_FOUND 0x0190 #define META_USER_FOUND 0x019a #define META_ABOUT 0x00e6 #define META_USER_INFO 0x00c8 #define SRV_RECV_MESSAGE 0x00dc #define SRV_RECV_MSG_UIN 0x0000 #define SRV_RECV_MSG_YEAR 0x0004 #define SRV_RECV_MSG_MONTH 0x0006 #define SRV_RECV_MSG_DAY 0x0007 #define SRV_RECV_MSG_HOUR 0x0008 #define SRV_RECV_MSG_MINUTE 0x0009 #define SRV_RECV_MSG_MSG_TYPE 0x000a #define SRV_RAND_USER 0x024e #define SRV_RAND_USER_UIN 0x0000 #define SRV_RAND_USER_IP 0x0004 #define SRV_RAND_USER_PORT 0x0008 #define SRV_RAND_USER_REAL_IP 0x000c #define SRV_RAND_USER_CLASS 0x0010 #define SRV_RAND_USER_X1 0x0011 #define SRV_RAND_USER_STATUS 0x0015 #define SRV_RAND_USER_TCP_VER 0x0019 /* This message has the same structure as cmd_send_msg */ #define SRV_SYS_DELIVERED_MESS 0x0104 static const value_string serverMetaSubCmdCode[] = { { META_USER_FOUND, "META_USER_FOUND" }, { META_EX_USER_FOUND, "META_EX_USER_FOUND" }, { META_ABOUT, "META_ABOUT" }, { META_USER_INFO, "META_USER_INFO" }, { 0, NULL } }; static const value_string serverCmdCode[] = { { SRV_ACK, "SRV_ACK" }, { SRV_SILENT_TOO_LONG, "SRV_SILENT_TOO_LONG" }, { SRV_GO_AWAY, "SRV_GO_AWAY" }, { SRV_NEW_UIN, "SRV_NEW_UIN" }, { SRV_LOGIN_REPLY, "SRV_LOGIN_REPLY" }, { SRV_BAD_PASS, "SRV_BAD_PASS" }, { SRV_USER_ONLINE, "SRV_USER_ONLINE" }, { SRV_USER_OFFLINE, "SRV_USER_OFFLINE" }, { 130, "SRV_QUERY" }, { 140, "SRV_USER_FOUND" }, { 160, "SRV_END_OF_SEARCH" }, { 180, "SRV_NEW_USER" }, { 200, "SRV_UPDATE_EXT" }, { SRV_RECV_MESSAGE, "SRV_RECV_MESSAGE" }, { 230, "SRV_END_OFFLINE_MESSAGES" }, { 240, "SRV_NOT_CONNECTED" }, { 250, "SRV_TRY_AGAIN" }, { SRV_SYS_DELIVERED_MESS, "SRV_SYS_DELIVERED_MESS" }, { 280, "SRV_INFO_REPLY" }, { 290, "SRV_EXT_INFO_REPLY" }, { 420, "SRV_STATUS_UPDATE" }, { 450, "SRV_SYSTEM_MESSAGE" }, { SRV_UPDATE_SUCCESS, "SRV_UPDATE_SUCCESS" }, { SRV_UPDATE_FAIL, "SRV_UPDATE_FAIL" }, { 500, "SRV_AUTH_UPDATE" }, { SRV_MULTI, "SRV_MULTI_PACKET" }, { 540, "SRV_END_CONTACTLIST_STATUS" }, { SRV_RAND_USER, "SRV_RAND_USER" }, { SRV_META_USER, "SRV_META_USER" }, { 0, NULL } }; #define MSG_TEXT 0x0001 #define MSG_URL 0x0004 #define MSG_AUTH_REQ 0x0006 #define MSG_AUTH 0x0008 #define MSG_USER_ADDED 0x000c #define MSG_EMAIL 0x000e #define MSG_CONTACTS 0x0013 #define STATUS_ONLINE 0x00000000 #define STATUS_AWAY 0x00000001 #define STATUS_DND 0x00000013 #define STATUS_INVISIBLE 0x00000100 #define STATUS_OCCUPIED 0x00000010 #define STATUS_NA 0x00000004 #define STATUS_CHAT 0x00000020 /* Offsets for all packets measured from the start of the payload; i.e. * with the ICQ header removed */ #define CMD_ACK 0x000a #define CMD_ACK_RANDOM 0x0000 #define CMD_SEND_MSG 0x010E #define CMD_SEND_MSG_RECV_UIN 0x0000 #define CMD_SEND_MSG_MSG_TYPE 0x0004 #define CMD_SEND_MSG_MSG_LEN 0x0006 #define CMD_SEND_MSG_MSG_TEXT 0x0008 /* The rest of the packet should be a null-term string */ #define CMD_LOGIN 0x03E8 #define CMD_LOGIN_TIME 0x0000 #define CMD_LOGIN_PORT 0x0004 #define CMD_LOGIN_PASSLEN 0x0008 #define CMD_LOGIN_PASSWD 0x000A /* The password is variable length; so when we've decoded the passwd, * the structure starts counting at 0 again. */ #define CMD_LOGIN_IP 0x0004 #define CMD_LOGIN_STATUS 0x0009 #define CMD_CONTACT_LIST 0x0406 #define CMD_CONTACT_LIST_NUM 0x0000 #define CMD_USER_META 0x064a #define CMD_REG_NEW_USER 0x03fc #define CMD_ACK_MESSAGES 0x0442 #define CMD_ACK_MESSAGES_RANDOM 0x0000 #define CMD_KEEP_ALIVE 0x042e #define CMD_KEEP_ALIVE_RANDOM 0x0000 #define CMD_SEND_TEXT_CODE 0x0438 #define CMD_SEND_TEXT_CODE_LEN 0x0000 #define CMD_SEND_TEXT_CODE_TEXT 0x0002 #define CMD_MSG_TO_NEW_USER 0x0456 #define CMD_QUERY_SERVERS 0x04ba #define CMD_QUERY_ADDONS 0x04c4 #define CMD_STATUS_CHANGE 0x04d8 #define CMD_STATUS_CHANGE_STATUS 0x0000 #define CMD_ADD_TO_LIST 0x053c #define CMD_ADD_TO_LIST_UIN 0x0000 #define CMD_RAND_SEARCH 0x056e #define CMD_RAND_SEARCH_GROUP 0x0000 #define CMD_META_USER 0x064a static const value_string msgTypeCode[] = { { MSG_TEXT, "MSG_TEXT" }, { MSG_URL, "MSG_URL" }, { MSG_AUTH_REQ, "MSG_AUTH_REQ" }, { MSG_AUTH, "MSG_AUTH" }, { MSG_USER_ADDED, "MSG_USER_ADDED" }, { MSG_EMAIL, "MSG_EMAIL" }, { MSG_CONTACTS, "MSG_CONTACTS" }, { 0, NULL } }; static const value_string statusCode[] = { { STATUS_ONLINE, "ONLINE" }, { STATUS_AWAY, "AWAY" }, { STATUS_DND, "DND" }, { STATUS_INVISIBLE, "INVISIBLE" }, { STATUS_OCCUPIED, "OCCUPIED" }, { STATUS_NA, "NA" }, { STATUS_CHAT, "Free for Chat" }, { 0, NULL } }; static const value_string clientCmdCode[] = { { CMD_ACK, "CMD_ACK" }, { CMD_SEND_MSG, "CMD_SEND_MESSAGE" }, { CMD_LOGIN, "CMD_LOGIN" }, { CMD_REG_NEW_USER, "CMD_REG_NEW_USER" }, { 1030, "CMD_CONTACT_LIST" }, { 1050, "CMD_SEARCH_UIN" }, { 1060, "CMD_SEARCH_USER" }, { 1070, "CMD_KEEP_ALIVE" }, { CMD_SEND_TEXT_CODE, "CMD_SEND_TEXT_CODE" }, { CMD_ACK_MESSAGES, "CMD_ACK_MESSAGES" }, { 1100, "CMD_LOGIN_1" }, { CMD_MSG_TO_NEW_USER, "CMD_MSG_TO_NEW_USER" }, { 1120, "CMD_INFO_REQ" }, { 1130, "CMD_EXT_INFO_REQ" }, { 1180, "CMD_CHANGE_PW" }, { 1190, "CMD_NEW_USER_INFO" }, { 1200, "CMD_UPDATE_EXT_INFO" }, { CMD_QUERY_SERVERS, "CMD_QUERY_SERVERS" }, { CMD_QUERY_ADDONS, "CMD_QUERY_ADDONS" }, { CMD_STATUS_CHANGE, "CMD_STATUS_CHANGE" }, { 1260, "CMD_NEW_USER_1" }, { 1290, "CMD_UPDATE_INFO" }, { 1300, "CMD_AUTH_UPDATE" }, { 1310, "CMD_KEEP_ALIVE2" }, { 1320, "CMD_LOGIN_2" }, { CMD_ADD_TO_LIST, "CMD_ADD_TO_LIST" }, { 1380, "CMD_RAND_SET" }, { CMD_RAND_SEARCH, "CMD_RAND_SEARCH" }, { CMD_META_USER, "CMD_META_USER" }, { 1700, "CMD_INVIS_LIST" }, { 1710, "CMD_VIS_LIST" }, { 1720, "CMD_UPDATE_LIST" }, { 0, NULL } }; #if 0 static const value_string group_vals[] = { { 1, "Name" }, { 2, "General" }, { 3, "Romance" }, { 4, "Games" }, { 5, "Students" }, { 6, "20 Something" }, { 7, "30 Something" }, { 8, "40 Something" }, { 9, "50 or worse" }, { 10, "Man want women" }, { 11, "Women want men" }, { 0, NULL } }; #endif /* * All ICQv5 decryption code thanx to Sebastien Dault (daus01@gel.usherb.ca) */ static const guchar table_v5 [] = { 0x59, 0x60, 0x37, 0x6B, 0x65, 0x62, 0x46, 0x48, 0x53, 0x61, 0x4C, 0x59, 0x60, 0x57, 0x5B, 0x3D, 0x5E, 0x34, 0x6D, 0x36, 0x50, 0x3F, 0x6F, 0x67, 0x53, 0x61, 0x4C, 0x59, 0x40, 0x47, 0x63, 0x39, 0x50, 0x5F, 0x5F, 0x3F, 0x6F, 0x47, 0x43, 0x69, 0x48, 0x33, 0x31, 0x64, 0x35, 0x5A, 0x4A, 0x42, 0x56, 0x40, 0x67, 0x53, 0x41, 0x07, 0x6C, 0x49, 0x58, 0x3B, 0x4D, 0x46, 0x68, 0x43, 0x69, 0x48, 0x33, 0x31, 0x44, 0x65, 0x62, 0x46, 0x48, 0x53, 0x41, 0x07, 0x6C, 0x69, 0x48, 0x33, 0x51, 0x54, 0x5D, 0x4E, 0x6C, 0x49, 0x38, 0x4B, 0x55, 0x4A, 0x62, 0x46, 0x48, 0x33, 0x51, 0x34, 0x6D, 0x36, 0x50, 0x5F, 0x5F, 0x5F, 0x3F, 0x6F, 0x47, 0x63, 0x59, 0x40, 0x67, 0x33, 0x31, 0x64, 0x35, 0x5A, 0x6A, 0x52, 0x6E, 0x3C, 0x51, 0x34, 0x6D, 0x36, 0x50, 0x5F, 0x5F, 0x3F, 0x4F, 0x37, 0x4B, 0x35, 0x5A, 0x4A, 0x62, 0x66, 0x58, 0x3B, 0x4D, 0x66, 0x58, 0x5B, 0x5D, 0x4E, 0x6C, 0x49, 0x58, 0x3B, 0x4D, 0x66, 0x58, 0x3B, 0x4D, 0x46, 0x48, 0x53, 0x61, 0x4C, 0x59, 0x40, 0x67, 0x33, 0x31, 0x64, 0x55, 0x6A, 0x32, 0x3E, 0x44, 0x45, 0x52, 0x6E, 0x3C, 0x31, 0x64, 0x55, 0x6A, 0x52, 0x4E, 0x6C, 0x69, 0x48, 0x53, 0x61, 0x4C, 0x39, 0x30, 0x6F, 0x47, 0x63, 0x59, 0x60, 0x57, 0x5B, 0x3D, 0x3E, 0x64, 0x35, 0x3A, 0x3A, 0x5A, 0x6A, 0x52, 0x4E, 0x6C, 0x69, 0x48, 0x53, 0x61, 0x6C, 0x49, 0x58, 0x3B, 0x4D, 0x46, 0x68, 0x63, 0x39, 0x50, 0x5F, 0x5F, 0x3F, 0x6F, 0x67, 0x53, 0x41, 0x25, 0x41, 0x3C, 0x51, 0x54, 0x3D, 0x5E, 0x54, 0x5D, 0x4E, 0x4C, 0x39, 0x50, 0x5F, 0x5F, 0x5F, 0x3F, 0x6F, 0x47, 0x43, 0x69, 0x48, 0x33, 0x51, 0x54, 0x5D, 0x6E, 0x3C, 0x31, 0x64, 0x35, 0x5A, 0x00, 0x00 }; static guint32 get_v5key(guint32 code, int len) { guint32 a1, a2, a3, a4, a5; guint32 check, key; a1 = code & 0x0001f000; a2 = code & 0x07c007c0; a3 = code & 0x003e0001; a4 = code & 0xf8000000; a5 = code & 0x0000083e; a1 = a1 >> 0x0c; a2 = a2 >> 0x01; a3 = a3 << 0x0a; a4 = a4 >> 0x10; a5 = a5 << 0x0f; check = a5 + a1 + a2 + a3 + a4; key = len * 0x68656C6C; key += check; return key; } static void decrypt_v5(guchar *bfr, guint32 size,guint32 key) { guint32 i; guint32 k; for (i=ICQ5_CL_SESSIONID; i < size; i+=4 ) { k = key+table_v5[i&0xff]; if ( i != 0x16 ) { bfr[i] ^= (guchar)(k & 0xff); bfr[i+1] ^= (guchar)((k & 0xff00)>>8); } if ( i != 0x12 ) { bfr[i+2] ^= (guchar)((k & 0xff0000)>>16); bfr[i+3] ^= (guchar)((k & 0xff000000)>>24); } } } static void icqv5_decode_msgType(proto_tree *tree, tvbuff_t *tvb, int offset, int size, packet_info *pinfo) { proto_item *msg_item; proto_tree *subtree; int left = size; guint16 msgType; gint sep_offset; int sz; /* Size of the current element */ unsigned int n; static const int *url_field_descr[] = { &hf_icq_description, &hf_icq_url, }; #define N_URL_FIELDS (sizeof url_field_descr / sizeof url_field_descr[0]) static const int *email_field_descr[] = { &hf_icq_nickname, &hf_icq_first_name, &hf_icq_last_name, &hf_icq_email, &hf_icq_unknown, &hf_icq_text, }; #define N_EMAIL_FIELDS (sizeof email_field_descr / sizeof email_field_descr[0]) static const int *auth_req_field_descr[] = { &hf_icq_nickname, &hf_icq_first_name, &hf_icq_last_name, &hf_icq_email, &hf_icq_unknown, &hf_icq_reason, }; #define N_AUTH_REQ_FIELDS (sizeof auth_req_field_descr / sizeof auth_req_field_descr[0]) static const int *user_added_field_descr[] = { &hf_icq_nickname, &hf_icq_first_name, &hf_icq_last_name, &hf_icq_email, }; #define N_USER_ADDED_FIELDS (sizeof user_added_field_descr / sizeof user_added_field_descr[0]) msgType = tvb_get_letohs(tvb, offset); subtree = proto_tree_add_subtree_format(tree, tvb, offset, size, ett_icq_body_parts, NULL, "%s Message", val_to_str_const(msgType, msgTypeCode, "Unknown")); msg_item = proto_tree_add_item(subtree, hf_icq_msg_type, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; left -= 2; if (msgType != MSG_AUTH) { /* * XXX - does a MSG_AUTH message really have 3 bytes of information * rather than a length field? */ proto_tree_add_item(subtree, hf_icq_msg_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; left -= 2; } switch(msgType) { case 0xffff: /* Field unknown */ break; default: expert_add_info_format(pinfo, msg_item, &ei_icq_unknown_command, "Unknown msgType: %u (0x%x)", msgType, msgType); break; case MSG_TEXT: proto_tree_add_item(subtree, hf_icq_msg, tvb, offset, left, ENC_ASCII|ENC_NA); break; case MSG_URL: for (n = 0; n < N_URL_FIELDS; n++) { if (n != N_URL_FIELDS - 1) { sep_offset = tvb_find_guint8(tvb, offset, left, 0xfe); sz = sep_offset - offset + 1; } else { sz = left; } if (sz != 0) { proto_tree_add_item(subtree, *url_field_descr[n], tvb, offset, sz, ENC_ASCII|ENC_NA); } else { proto_tree_add_string_format_value(subtree, *url_field_descr[n], tvb, offset, 0, "", "(empty)"); } offset += sz; left -= sz; } break; case MSG_EMAIL: for (n = 0; n < N_EMAIL_FIELDS; n++) { if (n != N_EMAIL_FIELDS - 1) { sep_offset = tvb_find_guint8(tvb, offset, left, 0xfe); sz = sep_offset - offset + 1; } else { sz = left; } if (sz != 0) { proto_tree_add_item(subtree, *email_field_descr[n], tvb, offset, sz, ENC_ASCII|ENC_NA); } else { proto_tree_add_string_format_value(subtree, *email_field_descr[n], tvb, offset, 0, "", "(empty)"); } offset += sz; left -= sz; } break; case MSG_AUTH: { /* Three bytes, first is a char signifying success */ unsigned char auth_suc; auth_suc = tvb_get_guint8(tvb, offset); proto_tree_add_uint_format_value(subtree, hf_icq_msg_authorization, tvb, offset, 1, auth_suc, "(%u) %s",auth_suc, (auth_suc==0)?"Denied":"Allowed"); offset++; proto_tree_add_item(subtree, hf_icq_x1, tvb, offset, 2, ENC_LITTLE_ENDIAN); break; } case MSG_AUTH_REQ: for (n = 0; n < N_AUTH_REQ_FIELDS; n++) { if (n != N_AUTH_REQ_FIELDS - 1) { sep_offset = tvb_find_guint8(tvb, offset, left, 0xfe); sz = sep_offset - offset + 1; } else { sz = left; } if (sz != 0) { proto_tree_add_item(subtree, *auth_req_field_descr[n], tvb, offset, sz, ENC_ASCII|ENC_NA); } else { proto_tree_add_string_format_value(subtree, *auth_req_field_descr[n], tvb, offset, 0, "", "(empty)"); } offset += sz; left -= sz; } break; case MSG_USER_ADDED: for (n = 0; n < N_USER_ADDED_FIELDS; n++) { if (n != N_USER_ADDED_FIELDS - 1) { sep_offset = tvb_find_guint8(tvb, offset, left, 0xfe); sz = sep_offset - offset + 1; } else { sz = left; } if (sz != 0) { proto_tree_add_item(subtree, *user_added_field_descr[n], tvb, offset, sz, ENC_ASCII|ENC_NA); } else { proto_tree_add_string_format_value(subtree, *user_added_field_descr[n], tvb, offset, 0, "", "(empty)"); } offset += sz; left -= sz; } break; case MSG_CONTACTS: { gint sep_offset_prev; int sz_local = 0; /* Size of the current element */ int n_local = 0; /* The nth element */ gboolean last = FALSE; while (!last) { sep_offset = tvb_find_guint8(tvb, offset, left, 0xfe); if (sep_offset != -1) { sz_local = sep_offset - offset + 1; } else { sz_local = left; last = TRUE; } if (n_local == 0) { /* The first element is the number of Nick/UIN pairs follow */ proto_tree_add_item(subtree, hf_icq_num_uin_pairs, tvb, offset, sz_local, ENC_ASCII|ENC_NA); n_local++; } else if (!last) { int svsz = sz_local; char* contact; left -= sz_local; sep_offset_prev = sep_offset; sep_offset = tvb_find_guint8(tvb, sep_offset_prev, left, 0xfe); if (sep_offset != -1) sz_local = sep_offset - offset + 1; else { sz_local = left; last = TRUE; } contact = tvb_get_string_enc(wmem_packet_scope(), tvb, sep_offset_prev + 1, sz_local, ENC_ASCII); proto_tree_add_string_format(subtree, hf_icq_msg_contact, tvb, offset, sz_local + svsz, contact, "%.*s: %.*s", svsz - 1, tvb_get_string_enc(wmem_packet_scope(), tvb, offset, svsz, ENC_ASCII), sz_local - 1, contact); n_local += 2; } left -= (sz_local+1); offset = sep_offset + 1; } break; } } } /********************************* * * Client commands * *********************************/ static void icqv5_cmd_send_text_code(proto_tree *tree, /* Tree to put the data in */ tvbuff_t *tvb, /* Decrypted packet content */ int offset) /* Offset from the start of the packet to the content */ { proto_tree *subtree = tree; guint16 len; len = tvb_get_letohs(tvb, offset+CMD_SEND_TEXT_CODE_LEN); proto_tree_add_item(subtree, hf_icq_text_code_length, tvb, offset + CMD_SEND_TEXT_CODE_LEN, 2, ENC_LITTLE_ENDIAN); if (len>0) { proto_tree_add_item(subtree, hf_icq_text_code, tvb, offset + CMD_SEND_TEXT_CODE_TEXT, len, ENC_ASCII|ENC_NA); } proto_tree_add_item(subtree, hf_icq_x1, tvb, offset + CMD_SEND_TEXT_CODE_TEXT + len, 2, ENC_LITTLE_ENDIAN); } static void icqv5_cmd_send_msg(proto_tree *tree, tvbuff_t *tvb, int offset, int size, packet_info *pinfo) { proto_tree_add_item(tree, hf_icq_receiver_uin, tvb, offset + CMD_SEND_MSG_RECV_UIN, 4, ENC_LITTLE_ENDIAN); size -= 4; icqv5_decode_msgType(tree, tvb, offset + CMD_SEND_MSG_MSG_TYPE, size, pinfo); } static void icqv5_cmd_login(proto_tree *tree, tvbuff_t *tvb, int offset) { proto_tree *subtree = tree; time_t theTime; char *aTime; guint32 passwdLen; if (tree) { theTime = tvb_get_letohl(tvb, offset + CMD_LOGIN_TIME); aTime = abs_time_secs_to_str(wmem_packet_scope(), theTime, ABSOLUTE_TIME_LOCAL, TRUE); proto_tree_add_uint_format_value(subtree, hf_icq_login_time, tvb, offset + CMD_LOGIN_TIME, 4, (guint32)theTime, "%u = %s", (guint32)theTime, aTime); proto_tree_add_item(subtree, hf_icq_login_port, tvb, offset + CMD_LOGIN_PORT, 4, ENC_LITTLE_ENDIAN); passwdLen = tvb_get_letohs(tvb, offset + CMD_LOGIN_PASSLEN); proto_tree_add_item(subtree, hf_icq_login_password, tvb, offset + CMD_LOGIN_PASSLEN, 2 + passwdLen, ENC_ASCII|ENC_NA); proto_tree_add_item(subtree, hf_icq_login_ip, tvb, offset + CMD_LOGIN_PASSWD + passwdLen + CMD_LOGIN_IP, 4, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_icq_status, tvb, offset + CMD_LOGIN_PASSWD + passwdLen + CMD_LOGIN_STATUS, 4, ENC_LITTLE_ENDIAN); } } static void icqv5_cmd_contact_list(proto_tree *tree, tvbuff_t *tvb, int offset) { unsigned char num; int i; guint32 uin; if (tree) { num = tvb_get_guint8(tvb, offset + CMD_CONTACT_LIST_NUM); proto_tree_add_item(tree, hf_icq_number_of_uins, tvb, offset + CMD_CONTACT_LIST, 1, ENC_NA); /* * A sequence of num times UIN follows */ offset += (CMD_CONTACT_LIST_NUM + 1); for (i = 0; i < num; i++) { uin = tvb_get_letohl(tvb, offset); proto_tree_add_uint_format(tree, hf_icq_uin, tvb, offset, 4, uin, "UIN[%d]: %u", i, uin); offset += 4; } } } /********************** * * Server commands * ********************** */ static void icqv5_srv_user_online(proto_tree *tree,/* Tree to put the data in */ tvbuff_t *tvb, /* Tvbuff with packet */ int offset) /* Offset from the start of the packet to the content */ { proto_tree *subtree = tree; if (tree) { proto_tree_add_item(subtree, hf_icq_uin, tvb, offset + SRV_USER_ONL_UIN, 4, ENC_LITTLE_ENDIAN); proto_tree_add_item(subtree, hf_icq_user_online_ip, tvb, offset + SRV_USER_ONL_IP, 4, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_icq_user_online_port, tvb, offset + SRV_USER_ONL_PORT, 4, ENC_LITTLE_ENDIAN); proto_tree_add_item(subtree, hf_icq_user_online_realip, tvb, offset + SRV_USER_ONL_REALIP, 4, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_icq_status, tvb, offset + SRV_USER_ONL_STATUS, 2, ENC_LITTLE_ENDIAN); /* * Kojak: Hypothesis is that this field might be an encoding for the * version used by the UIN that changed. To test this, I included * this line to the code. */ proto_tree_add_item(subtree, hf_icq_user_online_version, tvb, offset + SRV_USER_ONL_X2, 4, ENC_LITTLE_ENDIAN); } } static void icqv5_srv_multi(proto_tree *tree, /* Tree to put the data in */ tvbuff_t *tvb, /* Packet content */ int offset, /* Offset from the start of the packet to the content */ packet_info *pinfo) { guint8 num; guint16 pktSz; int i; num = tvb_get_guint8(tvb, offset + SRV_MULTI_NUM); proto_tree_add_item(tree, hf_icq_multi_num_packets, tvb, offset + SRV_MULTI_NUM, 1, ENC_NA); /* * A sequence of num times ( pktsize, packetData) follows */ offset += (SRV_MULTI_NUM + 1); for (i = 0; i < num; i++) { pktSz = tvb_get_letohs(tvb, offset); offset += 2; dissect_icqv5Server(tvb, offset, pinfo, tree, pktSz); offset += pktSz; } } static void icqv5_srv_meta_user(proto_tree *tree, /* Tree to put the data in */ tvbuff_t *tvb, /* Tvbuff with packet */ int offset, /* Offset from the start of the packet to the content */ int size _U_, /* Number of chars left to do */ packet_info *pinfo) { proto_tree *sstree; proto_item *ti; guint16 subcmd; unsigned char result; subcmd = tvb_get_letohs(tvb, offset + SRV_META_USER_SUBCMD); ti = proto_tree_add_item(tree, hf_icq_meta_user_subcmd, tvb, offset + SRV_META_USER_SUBCMD, 2, ENC_LITTLE_ENDIAN); sstree = proto_item_add_subtree(ti, ett_icq_body_parts); result = tvb_get_guint8(tvb, offset + SRV_META_USER_RESULT); proto_tree_add_uint_format_value(sstree, hf_icq_meta_user_result, tvb, offset + SRV_META_USER_RESULT, result, 1, "%s", (result==0x0a)?"Success":"Failure"); /* Skip the META_USER header */ offset += 3; switch(subcmd) { case META_EX_USER_FOUND: { /* This is almost the same as META_USER_FOUND, * however, there's an extra length field */ /* Read the length field */ proto_tree_add_item(sstree, hf_icq_meta_user_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; } /* FALLTHRU */ case META_USER_FOUND: { /* The goto mentioned in this block should be local to this * block if C'd allow it. * * They are used to "implement" a poorman's exception handling */ int len = 0; unsigned char auth; /* * Read UIN */ proto_tree_add_item(sstree, hf_icq_uin, tvb, offset, 4, ENC_LITTLE_ENDIAN); offset+=4; proto_tree_add_item_ret_length(sstree, hf_icq_nickname_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset += len; proto_tree_add_item_ret_length(sstree, hf_icq_first_name_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset += len; proto_tree_add_item_ret_length(sstree, hf_icq_last_name_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset += len; proto_tree_add_item_ret_length(sstree, hf_icq_email_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset += len; /* Get the authorize setting */ auth = tvb_get_guint8(tvb, offset); proto_tree_add_uint_format_value(sstree, hf_icq_meta_user_found_authorization, tvb, offset, 1, auth, "%s", (auth==0x01)?"Necessary":"Who needs it"); offset++; /* Get x2 */ proto_tree_add_item(sstree, hf_icq_meta_user_x2, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset+=2; /* Get x3 */ proto_tree_add_item(sstree, hf_icq_meta_user_x3, tvb, offset, 4, ENC_LITTLE_ENDIAN); break; } case META_ABOUT: { /* Get the about information */ proto_tree_add_item(sstree, hf_icq_meta_user_about, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII); break; } case META_USER_INFO: { int len = 0; #if 0 /* Get the uin */ proto_tree_add_item(sstree, hf_icq_uin, tvb, offset, 4, ENC_LITTLE_ENDIAN); offset+=4; #endif /* * Get every field from the description */ proto_tree_add_item_ret_length(sstree, hf_icq_nickname_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_first_name_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_last_name_uint_string, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_primary_email, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_secondary_email, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_old_email, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_city, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_state, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_phone, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_fax, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_street, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_cellphone, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; proto_tree_add_item_ret_length(sstree, hf_icq_zip, tvb, offset, 2, ENC_LITTLE_ENDIAN|ENC_ASCII, &len); offset+=len; /* Get country code */ proto_tree_add_item(sstree, hf_icq_meta_user_countrycode, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset+=2; /* Get the timezone setting */ proto_tree_add_item(sstree, hf_icq_meta_user_timezone, tvb, offset, 1, ENC_NA); offset++; /* Get the authorize setting */ proto_tree_add_item(sstree, hf_icq_meta_user_info_authorization, tvb, offset, 1, ENC_NA); offset++; /* Get the webaware setting */ proto_tree_add_item(sstree, hf_icq_meta_user_webaware, tvb, offset, 1, ENC_NA); offset++; /* Get the authorize setting */ proto_tree_add_item(sstree, hf_icq_meta_user_hideip, tvb, offset, 1, ENC_NA); break; } default: /* This information is already printed in the tree */ expert_add_info_format(pinfo, ti, &ei_icq_unknown_meta_subcmd, "Unknown Meta subcmd: 0x%x", subcmd); break; } } static void icqv5_srv_recv_message(proto_tree *tree, /* Tree to put the data in */ tvbuff_t *tvb, /* Packet content */ int offset, /* Offset from the start of the packet to the content */ int size, /* Number of chars left to do */ packet_info *pinfo) { guint16 year; guint8 month; guint8 day; guint8 hour; guint8 minute; proto_tree_add_item(tree, hf_icq_uin, tvb, offset + SRV_RECV_MSG_UIN, 4, ENC_LITTLE_ENDIAN); year = tvb_get_letohs(tvb, offset + SRV_RECV_MSG_YEAR); month = tvb_get_guint8(tvb, offset + SRV_RECV_MSG_MONTH); day = tvb_get_guint8(tvb, offset + SRV_RECV_MSG_DAY); hour = tvb_get_guint8(tvb, offset + SRV_RECV_MSG_HOUR); minute = tvb_get_guint8(tvb, offset + SRV_RECV_MSG_MINUTE); proto_tree_add_bytes_format_value(tree, hf_icq_recv_time, tvb, offset + SRV_RECV_MSG_YEAR, 2 + 4, NULL, "%u-%u-%u %02u:%02u", day, month, year, hour, minute); icqv5_decode_msgType(tree, tvb, offset + SRV_RECV_MSG_MSG_TYPE, size-10, pinfo); } static void icqv5_srv_rand_user(proto_tree *tree, /* Tree to put the data in */ tvbuff_t *tvb, /* Tvbuff with packet */ int offset) /* Offset from the start of the packet to the content */ { proto_tree *subtree = tree; guint8 commClass; if (tree) { /* guint32 UIN */ proto_tree_add_item(subtree, hf_icq_uin, tvb, offset + SRV_RAND_USER_UIN, 4, ENC_LITTLE_ENDIAN); /* guint32 IP */ proto_tree_add_item(subtree, hf_icq_rand_user_ip, tvb, offset + SRV_RAND_USER_IP, 4, ENC_BIG_ENDIAN); /* guint16 portNum */ /* XXX - 16 bits, or 32 bits? */ proto_tree_add_item(subtree, hf_icq_rand_user_port, tvb, offset + SRV_RAND_USER_PORT, 4, ENC_LITTLE_ENDIAN); /* guint32 realIP */ proto_tree_add_item(subtree, hf_icq_rand_user_realip, tvb, offset + SRV_RAND_USER_REAL_IP, 4, ENC_BIG_ENDIAN); /* guint8 Communication Class */ commClass = tvb_get_guint8(tvb, offset + SRV_RAND_USER_CLASS); proto_tree_add_uint_format_value(subtree, hf_icq_rand_user_class, tvb, offset + SRV_RAND_USER_CLASS, 1, commClass, "%s", (commClass!=4)?"User to User":"Through Server"); /* guint32 status */ /* XXX - 16 bits, or 32 bits? */ proto_tree_add_item(subtree, hf_icq_status, tvb, offset + SRV_RAND_USER_STATUS, 4, ENC_LITTLE_ENDIAN); /* guint16 tcpVersion */ proto_tree_add_item(subtree, hf_icq_rand_user_tcpversion, tvb, offset + SRV_RAND_USER_TCP_VER, 2, ENC_LITTLE_ENDIAN); } } /* * Dissect all the v5 client traffic. This is encrypted, so be careful. */ static void dissect_icqv5Client(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *icq_header_tree, *icq_body_tree; proto_item *ti, *cmd_item; int pktsize; /* The actual size of the ICQ content */ int capturedsize; /* The captured size of the ICQ content */ guint32 rounded_size; guint32 code, key; guint16 cmd; guint8 *decr_pd; /* Decrypted content */ tvbuff_t *decr_tvb; pktsize = tvb_reported_length(tvb); capturedsize = tvb_captured_length(tvb); /* Get the encryption key */ code = tvb_get_letohl(tvb, ICQ5_CL_CHECKCODE); key = get_v5key(code, pktsize); /* * Make a copy of the packet data, and decrypt it. * The decryption processes 4 bytes at a time, and starts at * an offset of ICQ5_CL_SESSIONID (which isn't a multiple of 4), * so we make sure that there are * * (ICQ5_CL_SESSIONID + a multiple of 4) * * bytes in the buffer. */ rounded_size = ((((capturedsize - ICQ5_CL_SESSIONID) + 3)/4)*4) + ICQ5_CL_SESSIONID; /* rounded_size might exceed the tvb bounds so we can't just use tvb_memdup here. */ decr_pd = (guint8 *)wmem_alloc(pinfo->pool, rounded_size); tvb_memcpy(tvb, decr_pd, 0, capturedsize); decrypt_v5(decr_pd, rounded_size, key); /* Allocate a new tvbuff, referring to the decrypted data. */ decr_tvb = tvb_new_child_real_data(tvb, decr_pd, capturedsize, pktsize); /* Add the decrypted data to the data source list. */ add_new_data_source(pinfo, decr_tvb, "Decrypted"); cmd = tvb_get_letohs(decr_tvb, ICQ5_CL_CMD); col_add_fstr(pinfo->cinfo, COL_INFO, "ICQv5 %s", val_to_str_const(cmd, clientCmdCode, "Unknown")); icq_header_tree = proto_tree_add_subtree(tree, tvb, 0, ICQ5_CL_HDRSIZE, ett_icq_header, NULL, "Header"); ti = proto_tree_add_boolean(icq_header_tree, hf_icq_type, tvb, 0, 0, ICQ5_CLIENT); PROTO_ITEM_SET_GENERATED(ti); proto_tree_add_item(icq_header_tree, hf_icq_version, tvb, ICQ_VERSION, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_uin, tvb, ICQ5_CL_UIN, 4, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_sessionid, decr_tvb, ICQ5_CL_SESSIONID, 4, ENC_LITTLE_ENDIAN); cmd_item = proto_tree_add_item(icq_header_tree, hf_icq_client_cmd, decr_tvb, ICQ5_CL_CMD, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_seqnum1, decr_tvb, ICQ5_CL_SEQNUM1, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_seqnum2, decr_tvb, ICQ5_CL_SEQNUM2, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_checkcode, tvb, ICQ5_CL_CHECKCODE, 4, ENC_LITTLE_ENDIAN); ti = proto_tree_add_uint(icq_header_tree, hf_icq_checkcode_key, tvb, ICQ5_CL_CHECKCODE, 4, key); PROTO_ITEM_SET_GENERATED(ti); icq_body_tree = proto_tree_add_subtree(tree, decr_tvb, ICQ5_CL_HDRSIZE, pktsize - ICQ5_CL_HDRSIZE, ett_icq_body, NULL, "Body"); switch(cmd) { case CMD_ACK: proto_tree_add_item(icq_body_tree, hf_icq_ack_random, decr_tvb, ICQ5_CL_HDRSIZE + CMD_ACK_RANDOM, 4, ENC_LITTLE_ENDIAN); break; case CMD_SEND_MSG: case CMD_MSG_TO_NEW_USER: icqv5_cmd_send_msg(icq_body_tree, decr_tvb, ICQ5_CL_HDRSIZE, pktsize - ICQ5_CL_HDRSIZE, pinfo); break; case CMD_RAND_SEARCH: proto_tree_add_item(icq_body_tree, hf_icq_group, decr_tvb, ICQ5_CL_HDRSIZE + CMD_RAND_SEARCH_GROUP, 4, ENC_LITTLE_ENDIAN); break; case CMD_LOGIN: icqv5_cmd_login(icq_body_tree, decr_tvb, ICQ5_CL_HDRSIZE); break; case CMD_SEND_TEXT_CODE: icqv5_cmd_send_text_code(icq_body_tree, decr_tvb, ICQ5_CL_HDRSIZE); break; case CMD_STATUS_CHANGE: proto_tree_add_item(icq_body_tree, hf_icq_status, decr_tvb, ICQ5_CL_HDRSIZE + CMD_STATUS_CHANGE_STATUS, 4, ENC_LITTLE_ENDIAN); break; case CMD_ACK_MESSAGES: proto_tree_add_item(icq_body_tree, hf_icq_ack_random, decr_tvb, ICQ5_CL_HDRSIZE + CMD_ACK_MESSAGES_RANDOM, 4, ENC_LITTLE_ENDIAN); break; case CMD_KEEP_ALIVE: proto_tree_add_item(icq_body_tree, hf_icq_keep_alive_random, decr_tvb, ICQ5_CL_HDRSIZE + CMD_KEEP_ALIVE_RANDOM, 4, ENC_LITTLE_ENDIAN); break; case CMD_ADD_TO_LIST: proto_tree_add_item(icq_body_tree, hf_icq_uin, decr_tvb, ICQ5_CL_HDRSIZE + CMD_ADD_TO_LIST_UIN, 4, ENC_LITTLE_ENDIAN); break; case CMD_CONTACT_LIST: icqv5_cmd_contact_list(icq_body_tree, decr_tvb, ICQ5_CL_HDRSIZE); break; case CMD_META_USER: case CMD_REG_NEW_USER: case CMD_QUERY_SERVERS: case CMD_QUERY_ADDONS: proto_tree_add_item(icq_body_tree, hf_icq_no_parameters, tvb, ICQ5_CL_HDRSIZE, 0, ENC_NA); break; default: expert_add_info(pinfo, cmd_item, &ei_icq_unknown_command); break; } } static void dissect_icqv5Server(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, int pktsize) { /* Server traffic is easy, not encrypted */ proto_tree *icq_header_tree, *icq_body_tree; proto_item *ti, *cmd_item; guint16 cmd = tvb_get_letohs(tvb, offset + ICQ5_SRV_CMD); if (pktsize == -1) { col_add_fstr(pinfo->cinfo, COL_INFO, "ICQv5 %s", val_to_str_const(cmd, serverCmdCode, "Unknown")); pktsize = tvb_reported_length(tvb); } icq_header_tree = proto_tree_add_subtree(tree, tvb, offset, ICQ5_SRV_HDRSIZE, ett_icq_header, NULL, "Header"); ti = proto_tree_add_boolean(icq_header_tree, hf_icq_type, tvb, 0, 0, ICQ5_SERVER); PROTO_ITEM_SET_GENERATED(ti); proto_tree_add_item(icq_header_tree, hf_icq_version, tvb, offset + ICQ_VERSION, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_sessionid, tvb, offset + ICQ5_SRV_SESSIONID, 4, ENC_LITTLE_ENDIAN); cmd_item = proto_tree_add_item(icq_header_tree, hf_icq_server_cmd, tvb, offset + ICQ5_SRV_CMD, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_seqnum1, tvb, offset + ICQ5_SRV_SEQNUM1, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_seqnum2, tvb, offset + ICQ5_SRV_SEQNUM2, 2, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_uin, tvb, offset + ICQ5_SRV_UIN, 4, ENC_LITTLE_ENDIAN); proto_tree_add_item(icq_header_tree, hf_icq_checkcode, tvb, offset + ICQ5_SRV_CHECKCODE, 4, ENC_LITTLE_ENDIAN); icq_body_tree = proto_tree_add_subtree(tree, tvb, ICQ5_CL_HDRSIZE, pktsize - ICQ5_SRV_HDRSIZE, ett_icq_body, NULL, "Body"); switch (cmd) { case SRV_RAND_USER: icqv5_srv_rand_user(icq_body_tree, tvb, offset + ICQ5_SRV_HDRSIZE); break; case SRV_SYS_DELIVERED_MESS: /* The message structures are all the same. Why not run * the same routine? */ icqv5_cmd_send_msg(icq_body_tree, tvb, offset + ICQ5_SRV_HDRSIZE, pktsize - ICQ5_SRV_HDRSIZE, pinfo); break; case SRV_USER_ONLINE: icqv5_srv_user_online(icq_body_tree, tvb, offset + ICQ5_SRV_HDRSIZE); break; case SRV_USER_OFFLINE: proto_tree_add_item(icq_body_tree, hf_icq_uin, tvb, offset + ICQ5_SRV_HDRSIZE + SRV_USER_OFFLINE_UIN, 4, ENC_LITTLE_ENDIAN); break; case SRV_LOGIN_REPLY: proto_tree_add_item(tree, hf_icq_login_reply_ip, tvb, offset + ICQ5_SRV_HDRSIZE + SRV_LOGIN_REPLY_IP, 4, ENC_BIG_ENDIAN); break; case SRV_META_USER: icqv5_srv_meta_user(icq_body_tree, tvb, offset + ICQ5_SRV_HDRSIZE, pktsize - ICQ5_SRV_HDRSIZE, pinfo); break; case SRV_RECV_MESSAGE: icqv5_srv_recv_message(icq_body_tree, tvb, offset + ICQ5_SRV_HDRSIZE, pktsize - ICQ5_SRV_HDRSIZE, pinfo); break; case SRV_MULTI: icqv5_srv_multi(icq_body_tree, tvb, offset + ICQ5_SRV_HDRSIZE, pinfo); break; case SRV_ACK: case SRV_SILENT_TOO_LONG: case SRV_GO_AWAY: case SRV_NEW_UIN: case SRV_BAD_PASS: case SRV_UPDATE_SUCCESS: proto_tree_add_item(icq_body_tree, hf_icq_no_parameters, tvb, offset + ICQ5_SRV_HDRSIZE, 0, ENC_NA); break; default: expert_add_info(pinfo, cmd_item, &ei_icq_unknown_command); break; } } static void dissect_icqv5(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { if (tvb_get_letohl(tvb, ICQ5_UNKNOWN) == 0) { dissect_icqv5Client(tvb, pinfo, tree); } else { dissect_icqv5Server(tvb, 0, pinfo, tree, -1); } } static int dissect_icq(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { int version; proto_item *ti; proto_tree *icq_tree; version = tvb_get_letohs(tvb, ICQ_VERSION); if (version < 2 || version > 5) return 0; /* This is not a (recognized) ICQ packet */ col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "ICQv%d", version); col_add_fstr(pinfo->cinfo, COL_INFO, "ICQ Version %d protocol", version); ti = proto_tree_add_protocol_format(tree, proto_icq, tvb, 0, -1, "ICQv%d", version); icq_tree = proto_item_add_subtree(ti, ett_icq); if (version == 5) { dissect_icqv5(tvb, pinfo, icq_tree); } else { proto_tree_add_item(icq_tree, hf_icq_version, tvb, ICQ_VERSION, 2, ENC_LITTLE_ENDIAN); } return (tvb_captured_length(tvb)); } /* registration with the filtering engine */ void proto_register_icq(void) { static hf_register_info hf[] = { { &hf_icq_version, {"Version", "icq.version", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_type, {"Client/Server", "icq.client", FT_BOOLEAN, BASE_NONE, TFS(&tfs_client_server), 0x0, NULL, HFILL }}, { &hf_icq_msg_type, {"Type", "icq.msg_type", FT_UINT16, BASE_DEC, VALS(msgTypeCode), 0x0, NULL, HFILL }}, { &hf_icq_uin, {"UIN", "icq.uin", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_sessionid, {"Session ID", "icq.sessionid", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_client_cmd, {"Client command", "icq.client_cmd", FT_UINT16, BASE_DEC, VALS(clientCmdCode), 0x0, NULL, HFILL }}, { &hf_icq_server_cmd, {"Server command", "icq.server_cmd", FT_UINT16, BASE_DEC, VALS(serverCmdCode), 0x0, NULL, HFILL }}, { &hf_icq_checkcode, {"Checkcode", "icq.checkcode", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_checkcode_key, {"Key", "icq.checkcode_key", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_seqnum1, {"Seq Number 1", "icq.seqnum1", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_seqnum2, {"Seq Number 2", "icq.seqnum2", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_group, {"Group", "icq.group", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_ack_random, {"Random", "icq.ack.random", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_keep_alive_random, {"Random", "icq.keep_alive.random", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_status, {"Client command", "icq.status", FT_UINT32, BASE_DEC, VALS(statusCode), 0x0, NULL, HFILL }}, { &hf_icq_meta_user_subcmd, {"Subcommand", "icq.meta_user.subcmd", FT_UINT16, BASE_DEC, VALS(serverMetaSubCmdCode), 0x0, NULL, HFILL }}, /* Generated from convert_proto_tree_add_text.pl */ { &hf_icq_msg_length, { "Length", "icq.msg_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_msg, { "Msg", "icq.msg", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_msg_authorization, { "Authorization", "icq.msg_authorization", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_x1, { "X1", "icq.x1", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_num_uin_pairs, { "Number of pairs", "icq.num_uin_pairs", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_text_code_length, { "Length", "icq.text_code_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_text_code, { "Text", "icq.text_code", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_receiver_uin, { "Receiver UIN", "icq.receiver_uin", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_login_time, { "Time", "icq.login.time", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_login_port, { "Port", "icq.login.port", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_login_password, { "Password", "icq.login.password", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_login_ip, { "IP", "icq.login.ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_number_of_uins, { "Number of uins", "icq.number_of_uins", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_user_online_ip, { "IP", "icq.user_online.ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_user_online_port, { "Port", "icq.user_online.port", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_user_online_realip, { "RealIP", "icq.user_online.realip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_user_online_version, { "Version", "icq.user_online.version", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_multi_num_packets, { "Number of pkts", "icq.multi.num_packets", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_result, { "Result", "icq.meta_user.result", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_length, { "Length", "icq.meta_user.length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_found_authorization, { "Authorization", "icq.meta_user.found_authorization", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_x2, { "x2", "icq.meta_user.x2", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_x3, { "x3", "icq.meta_user.x3", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_about, { "About", "icq.meta_user.about", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_countrycode, { "Countrycode", "icq.meta_user.countrycode", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_timezone, { "Timezone", "icq.meta_user.timezone", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_meta_user_info_authorization, { "Authorization", "icq.meta_user.info_authorization", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x0, NULL, HFILL }}, { &hf_icq_meta_user_webaware, { "Webaware", "icq.meta_user.webaware", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x0, NULL, HFILL }}, { &hf_icq_meta_user_hideip, { "HideIP", "icq.meta_user.hideip", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x0, NULL, HFILL }}, { &hf_icq_rand_user_ip, { "IP", "icq.rand_user.ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_rand_user_port, { "Port", "icq.rand_user.port", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_rand_user_realip, { "RealIP", "icq.rand_user.realip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_rand_user_class, { "Class", "icq.rand_user.class", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_rand_user_tcpversion, { "TCPVersion", "icq.rand_user.tcpversion", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_icq_no_parameters, { "No parameters", "icq.no_parameters", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_login_reply_ip, { "IP", "icq.login_reply.ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_nickname, { "Nickname", "icq.nickname", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_first_name, { "First name", "icq.first_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_last_name, { "Last name", "icq.last_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_email, { "Email", "icq.email", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_nickname_uint_string, { "Nickname", "icq.nickname", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_first_name_uint_string, { "First name", "icq.first_name", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_last_name_uint_string, { "Last name", "icq.last_name", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_email_uint_string, { "Email", "icq.email", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_primary_email, { "Primary email", "icq.primary_email", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_secondary_email, { "Secondary email", "icq.secondary_email", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_old_email, { "Old email", "icq.old_email", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_city, { "City", "icq.city", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_state, { "State", "icq.state", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_phone, { "Phone", "icq.phone", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_fax, { "Fax", "icq.fax", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_street, { "Street", "icq.street", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_cellphone, { "Cellphone", "icq.cellphone", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_zip, { "Zip", "icq.zip", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_description, { "Description", "icq.description", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_url, { "URL", "icq.url", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_text, { "Text", "icq.text", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_unknown, { "Unknown", "icq.unknown", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_reason, { "Reason", "icq.reason", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_msg_contact, { "Contact", "icq.msg_contact", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_icq_recv_time, { "Time", "icq.recv_time", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, }; static gint *ett[] = { &ett_icq, &ett_icq_header, &ett_icq_body, &ett_icq_body_parts, }; static ei_register_info ei[] = { { &ei_icq_unknown_meta_subcmd, { "icq.unknown_meta_subcmd", PI_UNDECODED, PI_WARN, "Unknown meta subcmd", EXPFILL }}, { &ei_icq_unknown_command, { "icq.unknown_command", PI_UNDECODED, PI_WARN, "Unknown command", EXPFILL }}, }; expert_module_t *expert_icq; proto_icq = proto_register_protocol("ICQ Protocol", "ICQ", "icq"); proto_register_field_array(proto_icq, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_icq = expert_register_protocol(proto_icq); expert_register_field_array(expert_icq, ei, array_length(ei)); } void proto_reg_handoff_icq(void) { dissector_handle_t icq_handle; icq_handle = create_dissector_handle(dissect_icq, proto_icq); dissector_add_uint_with_preference("udp.port", UDP_PORT_ICQ, icq_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */