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/*
* quake.c
*
* Copyright (C) 2009-2011 by ipoque GmbH
* Copyright (C) 2011-15 - 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_api.h"
#ifdef NDPI_PROTOCOL_QUAKE
static void ndpi_int_quake_add_connection(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_QUAKE, NDPI_PROTOCOL_UNKNOWN);
}
void ndpi_search_quake(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// struct ndpi_id_struct *src=ndpi_struct->src;
// struct ndpi_id_struct *dst=ndpi_struct->dst;
if ((packet->payload_packet_len == 14
&& get_u_int16_t(packet->payload, 0) == 0xffff && memcmp(&packet->payload[2], "getInfo", 7) == 0)
|| (packet->payload_packet_len == 17
&& get_u_int16_t(packet->payload, 0) == 0xffff && memcmp(&packet->payload[2], "challenge", 9) == 0)
|| (packet->payload_packet_len > 20
&& packet->payload_packet_len < 30
&& get_u_int16_t(packet->payload, 0) == 0xffff && memcmp(&packet->payload[2], "getServers", 10) == 0)) {
NDPI_LOG(NDPI_PROTOCOL_QUAKE, ndpi_struct, NDPI_LOG_DEBUG, "Quake IV detected.\n");
ndpi_int_quake_add_connection(ndpi_struct, flow);
return;
}
/* Quake III/Quake Live */
if (packet->payload_packet_len == 15 && get_u_int32_t(packet->payload, 0) == 0xffffffff
&& memcmp(&packet->payload[4], "getinfo", NDPI_STATICSTRING_LEN("getinfo")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_QUAKE, ndpi_struct, NDPI_LOG_DEBUG, "Quake III Arena/Quake Live detected.\n");
ndpi_int_quake_add_connection(ndpi_struct, flow);
return;
}
if (packet->payload_packet_len == 16 && get_u_int32_t(packet->payload, 0) == 0xffffffff
&& memcmp(&packet->payload[4], "getchallenge", NDPI_STATICSTRING_LEN("getchallenge")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_QUAKE, ndpi_struct, NDPI_LOG_DEBUG, "Quake III Arena/Quake Live detected.\n");
ndpi_int_quake_add_connection(ndpi_struct, flow);
return;
}
if (packet->payload_packet_len > 20 && packet->payload_packet_len < 30
&& get_u_int32_t(packet->payload, 0) == 0xffffffff
&& memcmp(&packet->payload[4], "getservers", NDPI_STATICSTRING_LEN("getservers")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_QUAKE, ndpi_struct, NDPI_LOG_DEBUG, "Quake III Arena/Quake Live detected.\n");
ndpi_int_quake_add_connection(ndpi_struct, flow);
return;
}
/* ports for startup packet:
Quake I 26000 (starts with 0x8000)
Quake II 27910
Quake III 27960 (increases with each player)
Quake IV 27650
Quake World 27500
Quake Wars ?????
*/
NDPI_LOG(NDPI_PROTOCOL_QUAKE, ndpi_struct, NDPI_LOG_DEBUG, "Quake excluded.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_QUAKE);
}
void init_quake_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("Quake", ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_QUAKE,
ndpi_search_quake,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
#endif
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