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/*
* xbox.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_protocols.h"
#ifdef NDPI_PROTOCOL_XBOX
static void ndpi_int_xbox_add_connection(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow)
{
ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_XBOX, NDPI_REAL_PROTOCOL);
}
void ndpi_search_xbox(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// struct ndpi_id_struct *src = flow->src;
// struct ndpi_id_struct *dst = flow->dst;
/*
* THIS IS TH XBOX UDP DETCTION ONLY !!!
* the xbox tcp detection is done by http code
*/
/* this detection also works for asymmetric xbox udp traffic */
if (packet->udp != NULL) {
u_int16_t dport = ntohs(packet->udp->dest);
u_int16_t sport = ntohs(packet->udp->source);
NDPI_LOG(NDPI_PROTOCOL_XBOX, ndpi_struct, NDPI_LOG_DEBUG, "search xbox\n");
if (packet->payload_packet_len > 12 &&
get_u_int32_t(packet->payload, 0) == 0 && packet->payload[5] == 0x58 &&
memcmp(&packet->payload[7], "\x00\x00\x00", 3) == 0) {
if ((packet->payload[4] == 0x0c && packet->payload[6] == 0x76) ||
(packet->payload[4] == 0x02 && packet->payload[6] == 0x18) ||
(packet->payload[4] == 0x0b && packet->payload[6] == 0x80) ||
(packet->payload[4] == 0x03 && packet->payload[6] == 0x40) ||
(packet->payload[4] == 0x06 && packet->payload[6] == 0x4e)) {
ndpi_int_xbox_add_connection(ndpi_struct, flow);
NDPI_LOG(NDPI_PROTOCOL_XBOX, ndpi_struct, NDPI_LOG_DEBUG, "xbox udp connection detected\n");
return;
}
}
if ((dport == 3074 || sport == 3074)
&& ((packet->payload_packet_len == 24 && packet->payload[0] == 0x00)
|| (packet->payload_packet_len == 42 && packet->payload[0] == 0x4f && packet->payload[2] == 0x0a)
|| (packet->payload_packet_len == 80 && ntohs(get_u_int16_t(packet->payload, 0)) == 0x50bc
&& packet->payload[2] == 0x45)
|| (packet->payload_packet_len == 40 && ntohl(get_u_int32_t(packet->payload, 0)) == 0xcf5f3202)
|| (packet->payload_packet_len == 38 && ntohl(get_u_int32_t(packet->payload, 0)) == 0xc1457f03)
|| (packet->payload_packet_len == 28 && ntohl(get_u_int32_t(packet->payload, 0)) == 0x015f2c00))) {
if (flow->l4.udp.xbox_stage == 1) {
ndpi_int_xbox_add_connection(ndpi_struct, flow);
NDPI_LOG(NDPI_PROTOCOL_XBOX, ndpi_struct, NDPI_LOG_DEBUG, "xbox udp connection detected\n");
return;
}
NDPI_LOG(NDPI_PROTOCOL_XBOX, ndpi_struct, NDPI_LOG_DEBUG, "maybe xbox.\n");
flow->l4.udp.xbox_stage++;
return;
}
/* exclude here all non matched udp traffic, exclude here tcp only if http has been excluded, because xbox could use http */
if (packet->tcp == NULL
#ifdef NDPI_PROTOCOL_HTTP
|| NDPI_COMPARE_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_HTTP) != 0
#endif
) {
NDPI_LOG(NDPI_PROTOCOL_XBOX, ndpi_struct, NDPI_LOG_DEBUG, "xbox udp excluded.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_XBOX);
}
}
/* to not exclude tcp traffic here, done by http code... */
}
#endif
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