/*
* world_of_warcraft.c
*
* Copyright (C) 2009-11 - ipoque GmbH
* Copyright (C) 2011-22 - ntop.org
*
* This file is part of nDPI, an open source deep packet inspection
* library based on the OpenDPI and PACE technology by ipoque GmbH
*
* nDPI is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nDPI 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "ndpi_protocol_ids.h"
#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_WORLDOFWARCRAFT
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_int_worldofwarcraft_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_WORLDOFWARCRAFT, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
#if !defined(WIN32)
static inline
#elif defined(MINGW_GCC)
__mingw_forceinline static
#else
__forceinline static
#endif
u_int8_t ndpi_int_is_wow_port(const u_int16_t port)
{
if (port == htons(3724) || port == htons(6112) || port == htons(6113) ||
port == htons(6114) || port == htons(4000) || port == htons(1119)) {
return 1;
}
return 0;
}
static void ndpi_search_worldofwarcraft(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
NDPI_LOG_DBG(ndpi_struct, "search World of Warcraft\n");
if (packet->tcp != NULL) {
/*
if ((packet->payload_packet_len > NDPI_STATICSTRING_LEN("POST /") &&
memcmp(packet->payload, "POST /", NDPI_STATICSTRING_LEN("POST /")) == 0) ||
(packet->payload_packet_len > NDPI_STATICSTRING_LEN("GET /") &&
memcmp(packet->payload, "GET /", NDPI_STATICSTRING_LEN("GET /")) == 0)) {
ndpi_parse_packet_line_info(ndpi_struct, flow);
if (packet->user_agent_line.ptr != NULL &&
packet->user_agent_line.len == NDPI_STATICSTRING_LEN("Blizzard Web Client") &&
memcmp(packet->user_agent_line.ptr, "Blizzard Web Client",
NDPI_STATICSTRING_LEN("Blizzard Web Client")) == 0) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_DBG(ndpi_struct, "World of Warcraft: Web Client found\n");
return;
}
}
*/
if (packet->payload_packet_len > NDPI_STATICSTRING_LEN("GET /")
&& memcmp(packet->payload, "GET /", NDPI_STATICSTRING_LEN("GET /")) == 0) {
ndpi_parse_packet_line_info(ndpi_struct, flow);
if (packet->user_agent_line.ptr != NULL && packet->host_line.ptr != NULL
&& packet->user_agent_line.len > NDPI_STATICSTRING_LEN("Blizzard Downloader")
&& packet->host_line.len > NDPI_STATICSTRING_LEN("worldofwarcraft.com")
&& memcmp(packet->user_agent_line.ptr, "Blizzard Downloader",
NDPI_STATICSTRING_LEN("Blizzard Downloader")) == 0
&& memcmp(&packet->host_line.ptr[packet->host_line.len - NDPI_STATICSTRING_LEN("worldofwarcraft.com")],
"worldofwarcraft.com", NDPI_STATICSTRING_LEN("worldofwarcraft.com")) == 0) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct,
"World of Warcraft: Web Client found\n");
return;
}
}
if (packet->payload_packet_len == 50 && memcmp(&packet->payload[2], "WORLD OF WARCRAFT CONNECTION",
NDPI_STATICSTRING_LEN("WORLD OF WARCRAFT CONNECTION")) == 0) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: Login found\n");
return;
}
if (packet->tcp->dest == htons(3724) && packet->payload_packet_len < 70
&& packet->payload_packet_len > 40 && (memcmp(&packet->payload[4], "WoW", 3) == 0
|| memcmp(&packet->payload[5], "WoW", 3) == 0)) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: Login found\n");
return;
}
if (packet->tcp->source == htons(3724)
&& packet->payload_packet_len == 8 && get_u_int32_t(packet->payload, 0) == htonl(0x0006ec01)) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: connection detected\n");
return;
}
/* for some well known WoW ports
check another pattern */
if (flow->l4.tcp.wow_stage == 0) {
if (ndpi_int_is_wow_port(packet->tcp->source) &&
packet->payload_packet_len >= 14 &&
ntohs(get_u_int16_t(packet->payload, 0)) == (packet->payload_packet_len - 2)) {
if (get_u_int32_t(packet->payload, 2) == htonl(0xec010100)) {
NDPI_LOG_DBG2(ndpi_struct, "probably World of Warcraft, waiting for final packet\n");
flow->l4.tcp.wow_stage = 2;
return;
} else if (packet->payload_packet_len == 41 &&
(get_u_int16_t(packet->payload, 2) == htons(0x0085) ||
get_u_int16_t(packet->payload, 2) == htons(0x0034) ||
get_u_int16_t(packet->payload, 2) == htons(0x1960))) {
NDPI_LOG_DBG2(ndpi_struct, "maybe World of Warcraft, need next\n");
flow->l4.tcp.wow_stage = 1;
return;
}
}
}
if (flow->l4.tcp.wow_stage == 1) {
if (packet->payload_packet_len == 325 &&
ntohs(get_u_int16_t(packet->payload, 0)) == (packet->payload_packet_len - 2) &&
get_u_int16_t(packet->payload, 4) == 0 &&
(get_u_int16_t(packet->payload, packet->payload_packet_len - 3) == htons(0x2331) ||
get_u_int16_t(packet->payload, 67) == htons(0x2331)) &&
(memcmp
(&packet->payload[packet->payload_packet_len - 18],
"\x94\xec\xff\xfd\x67\x62\xd4\x67\xfb\xf9\xdd\xbd\xfd\x01\xc0\x8f\xf9\x81", 18) == 0
|| memcmp(&packet->payload[packet->payload_packet_len - 30],
"\x94\xec\xff\xfd\x67\x62\xd4\x67\xfb\xf9\xdd\xbd\xfd\x01\xc0\x8f\xf9\x81", 18) == 0)) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: connection detected\n");
return;
}
if (packet->payload_packet_len > 32 &&
ntohs(get_u_int16_t(packet->payload, 0)) == (packet->payload_packet_len - 2)) {
if (get_u_int16_t(packet->payload, 4) == 0) {
NDPI_LOG_DBG2(ndpi_struct, "probably World of Warcraft, waiting for final packet\n");
flow->l4.tcp.wow_stage = 2;
return;
} else if (get_u_int32_t(packet->payload, 2) == htonl(0x12050000)) {
NDPI_LOG_DBG2(ndpi_struct, "probably World of Warcraft, waiting for final packet\n");
flow->l4.tcp.wow_stage = 2;
return;
}
}
}
if (flow->l4.tcp.wow_stage == 2) {
if (packet->payload_packet_len == 4) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: connection detected\n");
return;
} else if (packet->payload_packet_len > 4 && packet->payload_packet_len <= 16 && packet->payload[4] == 0x0c) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: connection detected\n");
return;
} else if (flow->packet_counter < 3) {
NDPI_LOG_DBG2(ndpi_struct, "waiting for final packet\n");
return;
}
}
if (flow->l4.tcp.wow_stage == 0 && packet->tcp->dest == htons(1119)) {
/* special log in port for battle.net/world of warcraft */
if (packet->payload_packet_len >= 77 &&
get_u_int32_t(packet->payload, 0) == htonl(0x40000aed) && get_u_int32_t(packet->payload, 4) == htonl(0xea070aed)) {
ndpi_int_worldofwarcraft_add_connection(ndpi_struct, flow);
NDPI_LOG_INFO(ndpi_struct, "World of Warcraft: connection detected\n");
return;
}
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_world_of_warcraft_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("WorldOfWarcraft", ndpi_struct, *id,
NDPI_PROTOCOL_WORLDOFWARCRAFT,
ndpi_search_worldofwarcraft,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}