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/*
* mms.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_protocol_ids.h"
#ifdef NDPI_CONTENT_MMS
#define NDPI_CURRENT_PROTO NDPI_CONTENT_MMS
#include "ndpi_api.h"
static void ndpi_int_mms_add_connection(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_CONTENT_MMS, NDPI_PROTOCOL_UNKNOWN);
}
void ndpi_search_mms_tcp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
NDPI_LOG_DBG(ndpi_struct, "search MMS\n");
/* search MSMMS packets */
if (packet->payload_packet_len >= 20) {
if (flow->l4.tcp.mms_stage == 0 && packet->payload[4] == 0xce
&& packet->payload[5] == 0xfa && packet->payload[6] == 0x0b
&& packet->payload[7] == 0xb0 && packet->payload[12] == 0x4d
&& packet->payload[13] == 0x4d && packet->payload[14] == 0x53 && packet->payload[15] == 0x20) {
NDPI_LOG_INFO(ndpi_struct, "found MMS: MSMMS Request \n");
flow->l4.tcp.mms_stage = 1 + packet->packet_direction;
return;
}
if (flow->l4.tcp.mms_stage == 2 - packet->packet_direction
&& packet->payload[4] == 0xce && packet->payload[5] == 0xfa
&& packet->payload[6] == 0x0b && packet->payload[7] == 0xb0
&& packet->payload[12] == 0x4d && packet->payload[13] == 0x4d
&& packet->payload[14] == 0x53 && packet->payload[15] == 0x20) {
NDPI_LOG_INFO(ndpi_struct, "found MMS: MSMMS Response \n");
ndpi_int_mms_add_connection(ndpi_struct, flow);
return;
}
}
#ifdef NDPI_PROTOCOL_HTTP
if (NDPI_COMPARE_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_HTTP) != 0) {
#endif /* NDPI_PROTOCOL_HTTP */
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
#ifdef NDPI_PROTOCOL_HTTP
} else {
NDPI_LOG_DBG(ndpi_struct, "MMS avoid early exclude from http\n");
}
#endif /* NDPI_PROTOCOL_HTTP */
}
void init_mms_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("MMS", ndpi_struct, detection_bitmask, *id,
NDPI_CONTENT_MMS,
ndpi_search_mms_tcp,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD,
NO_SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
#endif
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