diff options
Diffstat (limited to 'epan/dissectors/packet-icq.c')
-rw-r--r-- | epan/dissectors/packet-icq.c | 1377 |
1 files changed, 1377 insertions, 0 deletions
diff --git a/epan/dissectors/packet-icq.c b/epan/dissectors/packet-icq.c new file mode 100644 index 0000000..93e55bd --- /dev/null +++ b/epan/dissectors/packet-icq.c @@ -0,0 +1,1377 @@ +/* packet-icq.c + * Routines for ICQ packet disassembly + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +/* + * This file: by Kojak <kojak@bigwig.net> + * + * Decoding code ripped, reference to the original author at the + * appropriate place with the code itself. + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/to_str.h> +#include <epan/expert.h> + +void proto_register_icq(void); +void proto_reg_handoff_icq(void); + +static dissector_handle_t icq_handle; + +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 int * const url_field_descr[] = { + &hf_icq_description, + &hf_icq_url, + }; +#define N_URL_FIELDS (sizeof url_field_descr / sizeof url_field_descr[0]) + static int * const 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 int * const 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 int * const 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); + 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); + 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", + tvb_get_string_enc(wmem_packet_scope(), tvb, offset, svsz, ENC_ASCII), + 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); + } + + 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); + 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)); + + icq_handle = register_dissector("icq", dissect_icq, proto_icq); +} + +void +proto_reg_handoff_icq(void) +{ + dissector_add_uint_with_preference("udp.port", UDP_PORT_ICQ, icq_handle); +} + +/* + * Editor modelines - https://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: + */ |