/*
* meebo.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_MEEBO
static void ndpi_int_meebo_add_connection(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_MEEBO, NDPI_PROTOCOL_UNKNOWN);
}
void ndpi_search_meebo(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;
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "search meebo.\n");
/* catch audio/video flows which are flash (rtmp) */
if (
#ifdef NDPI_CONTENT_FLASH
packet->detected_protocol_stack[0] == NDPI_CONTENT_FLASH
#else
(packet->tcp->source == htons(1935) || packet->tcp->dest == htons(1935))
#endif
) {
/* TODO: once we have an amf decoder we can more directly access the rtmp fields
* if so, we may also exclude earlier */
if (packet->payload_packet_len > 900) {
if (memcmp(packet->payload + 116, "tokbox/", NDPI_STATICSTRING_LEN("tokbox/")) == 0 ||
memcmp(packet->payload + 316, "tokbox/", NDPI_STATICSTRING_LEN("tokbox/")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "found meebo/tokbox flash flow.\n");
ndpi_int_meebo_add_connection(ndpi_struct, flow);
return;
}
}
if (flow->packet_counter < 16 && flow->packet_direction_counter[flow->setup_packet_direction] < 6) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "need next packet.\n");
return;
}
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "exclude meebo.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_MEEBO);
return;
}
if ((
#ifdef NDPI_PROTOCOL_HTTP
packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
#endif
((packet->payload_packet_len > 3 && memcmp(packet->payload, "GET ", 4) == 0)
|| (packet->payload_packet_len > 4 && memcmp(packet->payload, "POST ", 5) == 0))
) && flow->packet_counter == 1) {
u_int8_t host_or_referer_match = 0;
ndpi_parse_packet_line_info(ndpi_struct, flow);
if (packet->host_line.ptr != NULL
&& packet->host_line.len >= 9
&& memcmp(&packet->host_line.ptr[packet->host_line.len - 9], "meebo.com", 9) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "Found Meebo host\n");
host_or_referer_match = 1;
} else if (packet->host_line.ptr != NULL
&& packet->host_line.len >= 10
&& memcmp(&packet->host_line.ptr[packet->host_line.len - 10], "tokbox.com", 10) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "Found tokbox host\n");
/* set it to 2 to avoid having plain tokbox traffic detected as meebo */
host_or_referer_match = 2;
} else if (packet->host_line.ptr != NULL && packet->host_line.len >= NDPI_STATICSTRING_LEN("74.114.28.110")
&& memcmp(&packet->host_line.ptr[packet->host_line.len - NDPI_STATICSTRING_LEN("74.114.28.110")],
"74.114.28.110", NDPI_STATICSTRING_LEN("74.114.28.110")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "Found meebo IP\n");
host_or_referer_match = 1;
} else if (packet->referer_line.ptr != NULL &&
packet->referer_line.len >= NDPI_STATICSTRING_LEN("http://www.meebo.com/") &&
memcmp(packet->referer_line.ptr, "http://www.meebo.com/",
NDPI_STATICSTRING_LEN("http://www.meebo.com/")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "Found meebo referer\n");
host_or_referer_match = 1;
} else if (packet->referer_line.ptr != NULL &&
packet->referer_line.len >= NDPI_STATICSTRING_LEN("http://mee.tokbox.com/") &&
memcmp(packet->referer_line.ptr, "http://mee.tokbox.com/",
NDPI_STATICSTRING_LEN("http://mee.tokbox.com/")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "Found tokbox referer\n");
host_or_referer_match = 1;
} else if (packet->referer_line.ptr != NULL &&
packet->referer_line.len >= NDPI_STATICSTRING_LEN("http://74.114.28.110/") &&
memcmp(packet->referer_line.ptr, "http://74.114.28.110/",
NDPI_STATICSTRING_LEN("http://74.114.28.110/")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "Found meebo IP referer\n");
host_or_referer_match = 1;
}
if (host_or_referer_match) {
if (host_or_referer_match == 1) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG,
"Found Meebo traffic based on host/referer\n");
ndpi_int_meebo_add_connection(ndpi_struct, flow);
return;
}
}
}
if (packet->detected_protocol_stack[0] == NDPI_PROTOCOL_MEEBO) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG,
"in case that ssl meebo has been detected return.\n");
return;
}
if (flow->packet_counter < 5 && packet->detected_protocol_stack[0] == NDPI_PROTOCOL_UNKNOWN
&& NDPI_COMPARE_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_SSL) == 0) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "ssl not yet excluded. need next packet.\n");
return;
}
#ifdef NDPI_CONTENT_FLASH
if (flow->packet_counter < 5 && packet->detected_protocol_stack[0] == NDPI_PROTOCOL_UNKNOWN &&
!NDPI_FLOW_PROTOCOL_EXCLUDED(ndpi_struct, flow, NDPI_CONTENT_FLASH)) {
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "flash not yet excluded. need next packet.\n");
return;
}
#endif
NDPI_LOG(NDPI_PROTOCOL_MEEBO, ndpi_struct, NDPI_LOG_DEBUG, "exclude meebo.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_MEEBO);
}
void init_meebo_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("Meebo", ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_MEEBO,
ndpi_search_meebo,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
/* Add protocol bitmask dependencies to detected bitmask*/
#ifdef NDPI_CONTENT_FLASH
NDPI_ADD_PROTOCOL_TO_BITMASK(ndpi_struct->callback_buffer[*id].detection_bitmask, NDPI_CONTENT_FLASH);
#endif
*id += 1;
}
#endif