mirror of
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526 lines
20 KiB
C
526 lines
20 KiB
C
/*
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* msn.c
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*
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* Copyright (C) 2009-2011 by ipoque GmbH
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* Copyright (C) 2011-19 - ntop.org
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*
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* This file is part of nDPI, an open source deep packet inspection
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* library based on the OpenDPI and PACE technology by ipoque GmbH
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*
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* nDPI is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nDPI is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ndpi_protocol_ids.h"
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#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_MSN
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#include "ndpi_api.h"
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#define MAX_PACKETS_FOR_MSN 100
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static void ndpi_int_msn_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
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{
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ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_MSN, NDPI_PROTOCOL_UNKNOWN);
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}
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static u_int8_t ndpi_int_find_xmsn(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
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{
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struct ndpi_packet_struct *packet = &flow->packet;
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if(packet->parsed_lines > 3) {
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u_int16_t i;
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for(i = 2; i < packet->parsed_lines; i++) {
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if(packet->line[i].ptr != NULL && packet->line[i].len > NDPI_STATICSTRING_LEN("X-MSN") &&
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memcmp(packet->line[i].ptr, "X-MSN", NDPI_STATICSTRING_LEN("X-MSN")) == 0) {
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return 1;
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}
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}
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}
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return 0;
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}
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/* search over TCP */
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static void ndpi_search_msn_tcp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
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{
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struct ndpi_packet_struct *packet = &flow->packet;
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struct ndpi_id_struct *src = flow->src;
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struct ndpi_id_struct *dst = flow->dst;
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u_int16_t plen;
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u_int16_t status = 0;
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if(packet->detected_protocol_stack[0] == NDPI_PROTOCOL_TLS) {
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NDPI_LOG_DBG2(ndpi_struct, "msn ssl ft test\n");
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if(flow->packet_counter < 10) {
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if(flow->packet_counter == 7 && packet->payload_packet_len > 300) {
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if(memcmp(packet->payload + 24, "MSNSLP", 6) == 0
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|| (get_u_int32_t(packet->payload, 0) == htonl(0x30000000)
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&& get_u_int32_t(packet->payload, 4) == 0x00000000)) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN File Transfer, ifdef ssl\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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if(flow->packet_counter >= 5 && flow->packet_counter <= 10
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&& (get_u_int32_t(packet->payload, 0) == htonl(0x18000000)
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&& get_u_int32_t(packet->payload, 4) == 0x00000000)) {
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flow->l4.tcp.msn_ssl_ft++;
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NDPI_LOG_DBG2(ndpi_struct,
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"increased msn ft ssl stage to: %u at packet nr: %u\n",
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flow->l4.tcp.msn_ssl_ft,
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flow->packet_counter);
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if (flow->l4.tcp.msn_ssl_ft == 2) {
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NDPI_LOG_INFO(ndpi_struct,
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"found MSN File Transfer, ifdef ssl 2.\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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}
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return;
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}
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}
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}
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/* we detect the initial connection only ! */
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/* match: "VER " ..... "CVR" x 0x0d 0x0a
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* len should be small, lets say less than 100 bytes
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* x is now "0", but can be increased
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*/
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/* now we have a look at the first packet only. */
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if(flow->packet_counter == 1
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|| ((packet->detected_protocol_stack[0] == NDPI_PROTOCOL_TLS)
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&& flow->packet_counter <= 3)
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) {
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/* this part is working asymmetrically */
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if(packet->payload_packet_len > 32
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&& (packet->payload[0] == 0x02 || packet->payload[0] == 0x00)
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&& (ntohl(get_u_int32_t(packet->payload, 8)) == 0x2112a442
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|| ntohl(get_u_int32_t(packet->payload, 4)) == 0x2112a442)
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&& ((ntohl(get_u_int32_t(packet->payload, 24)) == 0x000f0004
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&& ntohl(get_u_int32_t(packet->payload, 28)) == 0x72c64bc6)
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|| (ntohl(get_u_int32_t(packet->payload, 20)) == 0x000f0004
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&& ntohl(get_u_int32_t(packet->payload, 24)) == 0x72c64bc6))) {
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NDPI_LOG_INFO(ndpi_struct,
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"found MSN in packets that also contain voice.messenger.live.com.\n");
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/* TODO this is an alternative pattern for video detection */
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/* if (packet->payload_packet_len > 100 &&
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get_u_int16_t(packet->payload, 86) == htons(0x05dc)) { */
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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/* this case works asymmetrically */
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if (packet->payload_packet_len > 10 && packet->payload_packet_len < 100) {
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if (get_u_int8_t(packet->payload, packet->payload_packet_len - 2) == 0x0d
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&& get_u_int8_t(packet->payload, packet->payload_packet_len - 1) == 0x0a) {
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/* The MSNP string is used in XBOX clients. */
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if (ndpi_match_strprefix(packet->payload, packet->payload_packet_len, "VER ")) {
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if (memcmp(&packet->payload[packet->payload_packet_len - 6], "CVR",
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3) == 0 || memcmp(&packet->payload[packet->payload_packet_len - 8], "MSNP", 4) == 0) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN by pattern VER...CVR/MSNP ODOA\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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if (ndpi_match_strprefix(&packet->payload[4], packet->payload_packet_len-4, "MSNFT")) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN FT by pattern VER MSNFT...0d0a\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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}
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}
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if(
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packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
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ndpi_match_strprefix(packet->payload, packet->payload_packet_len, "GET ") ||
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ndpi_match_strprefix(packet->payload, packet->payload_packet_len, "POST ")) {
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ndpi_parse_packet_line_info(ndpi_struct, flow);
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if (packet->user_agent_line.ptr != NULL &&
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packet->user_agent_line.len > NDPI_STATICSTRING_LEN("Messenger/") &&
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memcmp(packet->user_agent_line.ptr, "Messenger/", NDPI_STATICSTRING_LEN("Messenger/")) == 0) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN Messenger/\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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/* not seen this pattern in any trace */
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/* now test for http login, at least 100 a bytes packet */
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if(packet->payload_packet_len > 100) {
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if(
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packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
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memcmp(packet->payload, "POST http://", 12) == 0) {
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/* scan packet if not already done... */
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ndpi_parse_packet_line_info(ndpi_struct, flow);
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if(packet->content_line.ptr != NULL &&
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((packet->content_line.len == NDPI_STATICSTRING_LEN("application/x-msn-messenger") &&
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memcmp(packet->content_line.ptr, "application/x-msn-messenger",
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NDPI_STATICSTRING_LEN("application/x-msn-messenger")) == 0) ||
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(packet->content_line.len >= NDPI_STATICSTRING_LEN("text/x-msnmsgr") &&
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memcmp(packet->content_line.ptr, "text/x-msnmsgr",
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NDPI_STATICSTRING_LEN("text/x-msnmsgr")) == 0))) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN POST application/x-msn-messenger\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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}
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/* now test for http login that uses a gateway, at least 400 a bytes packet */
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/* for this case the asymmetric detection is asym (1) */
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if(packet->payload_packet_len > 400) {
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if((
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packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
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(memcmp(packet->payload, "POST ", 5) == 0))) {
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u_int16_t c;
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if(memcmp(&packet->payload[5], "http://", 7) == 0) {
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/*
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* We are searching for a pattern "POST http://gateway.messenger.hotmail.com/gateway/gateway.dll" or
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* "POST http://<some ip address here like 172.0.0.0>/gateway/gateway.dll"
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* POST http:// is 12 byte so we are searching for 13 to 70 byte for this paten.
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*/
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for(c = 13; c < 50; c++) {
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if(memcmp(&packet->payload[c], "/", 1) == 0) {
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if(memcmp(&packet->payload[c], "/gateway/gateway.dll", 20) == 0) {
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NDPI_LOG_DBG2(ndpi_struct, "found pattern http://.../gateway/gateway.ddl\n");
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status = 1;
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break;
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}
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}
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}
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} else if((memcmp(&packet->payload[5], "/gateway/gateway.dll", 20) == 0)) {
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NDPI_LOG_DBG2(ndpi_struct, "found pattern http://.../gateway/gateway.ddl\n");
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status = 1;
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}
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}
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if(status) {
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u_int16_t a;
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ndpi_parse_packet_line_info(ndpi_struct, flow);
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if(packet->content_line.ptr != NULL && ((packet->content_line.len == 23
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&& memcmp(packet->content_line.ptr, "text/xml; charset=utf-8", 23) == 0)
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||
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(packet->content_line.len == 24
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&& memcmp(packet->content_line.ptr, "text/html; charset=utf-8", 24) == 0)
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||
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(packet->content_line.len == 33
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&& memcmp(packet->content_line.ptr, "application/x-www-form-urlencoded", 33) == 0))) {
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if ((src != NULL && NDPI_COMPARE_PROTOCOL_TO_BITMASK(src->detected_protocol_bitmask, NDPI_PROTOCOL_MSN) != 0)
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|| (dst != NULL && NDPI_COMPARE_PROTOCOL_TO_BITMASK(dst->detected_protocol_bitmask, NDPI_PROTOCOL_MSN) != 0)) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN with pattern text/xml; charset=utf-8\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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for(a = 0; a < packet->parsed_lines; a++) {
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if(packet->line[a].len >= 4 && (memcmp(packet->line[a].ptr, "CVR ", 4) == 0
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|| memcmp(packet->line[a].ptr, "VER ", 4) == 0 ||
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memcmp(packet->line[a].ptr, "ANS ", 4) == 0)) {
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NDPI_LOG_DBG2(ndpi_struct, "found MSN with pattern text/sml; charset0utf-8\n");
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NDPI_LOG_INFO(ndpi_struct, "found MSN xml CVS / VER / ANS found\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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}
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}
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}
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/* asym (1) ; possibly occurs in symmetric cases also. */
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if(flow->packet_counter <= 10 &&
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(flow->packet_direction_counter[0] <= 2 || flow->packet_direction_counter[1] <= 2)
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&& packet->payload_packet_len > 100) {
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/* not necessary to check the length, because this has been done : >400. */
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if(
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packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
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ndpi_match_strprefix(packet->payload, packet->payload_packet_len, "HTTP/1.0 200 OK") ||
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ndpi_match_strprefix(packet->payload, packet->payload_packet_len, "HTTP/1.1 200 OK")
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) {
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ndpi_parse_packet_line_info(ndpi_struct, flow);
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if(packet->content_line.ptr != NULL &&
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((packet->content_line.len == NDPI_STATICSTRING_LEN("application/x-msn-messenger") &&
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memcmp(packet->content_line.ptr, "application/x-msn-messenger", NDPI_STATICSTRING_LEN("application/x-msn-messenger")) == 0) ||
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(packet->content_line.len >= NDPI_STATICSTRING_LEN("text/x-msnmsgr") &&
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memcmp(packet->content_line.ptr, "text/x-msnmsgr", NDPI_STATICSTRING_LEN("text/x-msnmsgr")) == 0))) {
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NDPI_LOG_INFO(ndpi_struct,
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"found MSN application/x-msn-messenger.\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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if(ndpi_int_find_xmsn(ndpi_struct, flow) == 1) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN X-MSN\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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}
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/* did not find any trace with this pattern */
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/* now block proxy connection */
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if(packet->payload_packet_len >= 42) {
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if(memcmp(packet->payload, "CONNECT messenger.hotmail.com:1863 HTTP/1.", 42) == 0) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN with pattern CONNECT messenger.hotmail.com:1863 HTTP/1.\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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if (packet->payload_packet_len >= 18) {
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if (memcmp(packet->payload, "USR ", 4) == 0 || memcmp(packet->payload, "ANS ", 4) == 0) {
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/* now we must see a number */
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const u_int16_t endlen = packet->payload_packet_len - 12;
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plen = 4;
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while (1) {
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if (packet->payload[plen] == ' ') {
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break;
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}
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if (packet->payload[plen] < '0' || packet->payload[plen] > '9') {
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goto ndpi_msn_exclude;
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}
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plen++;
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if (plen >= endlen) {
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goto ndpi_msn_exclude;
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}
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}
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while (plen < endlen) {
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if (ndpi_check_for_email_address(ndpi_struct, flow, plen) != 0) {
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NDPI_LOG_DBG2(ndpi_struct, "found mail address\n");
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break;
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}
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if (packet->payload_packet_len > plen + 1
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&& (packet->payload[plen] < 20 || packet->payload[plen] > 128)) {
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goto ndpi_msn_exclude;
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}
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plen++;
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if (plen >= endlen) {
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goto ndpi_msn_exclude;
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}
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}
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NDPI_LOG_INFO(ndpi_struct, "found MSN with pattern USR/ANS ...mail_address\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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}
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/* finished examining the first packet only. */
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/* asym (1) ; possibly occurs in symmetric cases also. */
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if(flow->packet_counter <= 10 &&
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(flow->packet_direction_counter[0] <= 2 || flow->packet_direction_counter[1] <= 2) &&
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packet->payload_packet_len > 100) {
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/* not necessary to check the length, because this has been done : >400. */
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if(
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packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
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(memcmp(packet->payload, "HTTP/1.0 200 OK", 15) == 0) ||
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(memcmp(packet->payload, "HTTP/1.1 200 OK", 15) == 0)) {
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ndpi_parse_packet_line_info(ndpi_struct, flow);
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if(packet->content_line.ptr != NULL && ((packet->content_line.len == NDPI_STATICSTRING_LEN("application/x-msn-messenger") &&
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memcmp(packet->content_line.ptr, "application/x-msn-messenger",
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NDPI_STATICSTRING_LEN("application/x-msn-messenger")) == 0) ||
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(packet->content_line.len >= NDPI_STATICSTRING_LEN("text/x-msnmsgr") &&
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memcmp(packet->content_line.ptr, "text/x-msnmsgr", NDPI_STATICSTRING_LEN("text/x-msnmsgr")) == 0))) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN application/x-msn-messenger\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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if(ndpi_int_find_xmsn(ndpi_struct, flow) == 1) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN X-MSN\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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}
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/* finished examining the second packet only */
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/* direct user connection (file transfer,...) */
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if((src != NULL && NDPI_COMPARE_PROTOCOL_TO_BITMASK(src->detected_protocol_bitmask, NDPI_PROTOCOL_MSN) != 0)
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|| (dst != NULL
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&& NDPI_COMPARE_PROTOCOL_TO_BITMASK(dst->detected_protocol_bitmask, NDPI_PROTOCOL_MSN) != 0)) {
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if (flow->packet_counter == 1 &&
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packet->payload_packet_len > 12 && memcmp(packet->payload, "recipientid=", 12) == 0) {
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NDPI_LOG_INFO(ndpi_struct, "found MSN file transfer\n");
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ndpi_int_msn_add_connection(ndpi_struct, flow);
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return;
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}
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}
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/* MSN File Transfer of MSN 8.1 and 8.5
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* first packet with length 4 and pattern 0x04000000
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* second packet (in the same direction), with length 56 and pattern 0x00000000 from payload[16]
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* third packet (in the opposite direction to 1 & 2), with length 4 and pattern 0x30000000
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*/
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if(flow->l4.tcp.msn_stage == 0) {
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/* asymmetric detection to this pattern is asym (2) */
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if((packet->payload_packet_len == 4 || packet->payload_packet_len == 8)
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&& get_u_int32_t(packet->payload, 0) == htonl(0x04000000)) {
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NDPI_LOG_DBG2(ndpi_struct, "maybe first TCP MSN detected\n");
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if(packet->payload_packet_len == 8 && get_u_int32_t(packet->payload, 4) == htonl(0x666f6f00)) {
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flow->l4.tcp.msn_stage = 5 + packet->packet_direction;
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return;
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}
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flow->l4.tcp.msn_stage = 1 + packet->packet_direction;
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return;
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}
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/* asymmetric detection to this pattern is asym (2) */
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} else if (flow->l4.tcp.msn_stage == 1 + packet->packet_direction) {
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if (packet->payload_packet_len > 10 && get_u_int32_t(packet->payload, 0) == htonl(0x666f6f00)) {
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ndpi_int_msn_add_connection(ndpi_struct, flow);
|
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NDPI_LOG_INFO(ndpi_struct, "found MSN File Transfer 1\n");
|
|
return;
|
|
}
|
|
/* did not see this pattern in any trace */
|
|
if (packet->payload_packet_len == 56 && get_u_int32_t(packet->payload, 16) == 0) {
|
|
NDPI_LOG_DBG2(ndpi_struct, "maybe Second TCP MSN detected\n");
|
|
flow->l4.tcp.msn_stage = 3 + packet->packet_direction;
|
|
return;
|
|
}
|
|
|
|
|
|
} else if (flow->l4.tcp.msn_stage == 2 - packet->packet_direction
|
|
&& packet->payload_packet_len == 4 && get_u_int32_t(packet->payload, 0) == htonl(0x30000000)) {
|
|
ndpi_int_msn_add_connection(ndpi_struct, flow);
|
|
NDPI_LOG_INFO(ndpi_struct, "found MSN File Transfer 2\n");
|
|
return;
|
|
} else if ((flow->l4.tcp.msn_stage == 3 + packet->packet_direction)
|
|
|| (flow->l4.tcp.msn_stage == 4 - packet->packet_direction)) {
|
|
if (packet->payload_packet_len == 4 && get_u_int32_t(packet->payload, 0) == htonl(0x30000000)) {
|
|
ndpi_int_msn_add_connection(ndpi_struct, flow);
|
|
NDPI_LOG_INFO(ndpi_struct, "found MSN File Transfer 2\n");
|
|
return;
|
|
}
|
|
} else if (flow->l4.tcp.msn_stage == 6 - packet->packet_direction) {
|
|
if ((packet->payload_packet_len == 4) &&
|
|
(get_u_int32_t(packet->payload, 0) == htonl(0x10000000) || get_u_int32_t(packet->payload, 0) == htonl(0x30000000))) {
|
|
ndpi_int_msn_add_connection(ndpi_struct, flow);
|
|
NDPI_LOG_INFO(ndpi_struct, "found MSN File Transfer 3\n");
|
|
return;
|
|
}
|
|
} else if (flow->l4.tcp.msn_stage == 5 + packet->packet_direction) {
|
|
if ((packet->payload_packet_len == 20) && get_u_int32_t(packet->payload, 0) == htonl(0x10000000)) {
|
|
ndpi_int_msn_add_connection(ndpi_struct, flow);
|
|
NDPI_LOG_INFO(ndpi_struct, "found MSN File Transfer 3\n");
|
|
return;
|
|
}
|
|
}
|
|
NDPI_LOG_DBG(ndpi_struct, "msn 7\n");
|
|
|
|
if (flow->packet_counter <= MAX_PACKETS_FOR_MSN) {
|
|
if (packet->payload_packet_len >=4 && (memcmp(&packet->payload[0], "MSG ", 4) == 0
|
|
|| memcmp(&packet->payload[0], "PNG", 3) == 0
|
|
|| memcmp(&packet->payload[0], "QNG ", 4) == 0
|
|
|| memcmp(&packet->payload[0], "OUT", 3) == 0
|
|
|| memcmp(&packet->payload[0], "RNG ", 4) == 0
|
|
|| memcmp(&packet->payload[0], "NLN ", 4) == 0
|
|
|| memcmp(&packet->payload[0], "UBX ", 4) == 0
|
|
|| memcmp(&packet->payload[0], "XFR ", 4) == 0)
|
|
){
|
|
ndpi_int_msn_add_connection(ndpi_struct, flow);
|
|
|
|
NDPI_LOG_INFO(ndpi_struct, "found MSN\n");
|
|
return;
|
|
}
|
|
}
|
|
ndpi_msn_exclude:
|
|
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
|
|
}
|
|
|
|
/* search over UDP */
|
|
static void ndpi_search_msn_udp_misc(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;
|
|
|
|
|
|
/* do we have an msn login ? */
|
|
if ((src == NULL || NDPI_COMPARE_PROTOCOL_TO_BITMASK(src->detected_protocol_bitmask, NDPI_PROTOCOL_MSN) == 0)
|
|
&& (dst == NULL
|
|
|| NDPI_COMPARE_PROTOCOL_TO_BITMASK(dst->detected_protocol_bitmask, NDPI_PROTOCOL_MSN) == 0)) {
|
|
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
|
|
return;
|
|
}
|
|
|
|
/* asymmetric ft detection works */
|
|
if (packet->payload_packet_len == 20
|
|
&& get_u_int32_t(packet->payload, 4) == 0 && packet->payload[9] == 0
|
|
&& get_u_int16_t(packet->payload, 10) == htons(0x0100)) {
|
|
NDPI_LOG_INFO(ndpi_struct, "found MSN udp misc data connection\n");
|
|
ndpi_int_msn_add_connection(ndpi_struct, flow);
|
|
}
|
|
|
|
/* asymmetric detection working. */
|
|
return;
|
|
//}
|
|
}
|
|
|
|
|
|
void ndpi_search_msn(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 msn\n");
|
|
/* this if request should always be true */
|
|
if(NDPI_COMPARE_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_MSN) == 0) {
|
|
/* we deal with tcp now */
|
|
if(packet->tcp != NULL) {
|
|
/* msn can use http or ssl for connection. That's why every http, ssl and ukn packet must enter in the msn detection */
|
|
/* the detection can switch out the http or the ssl detection. In this case we need not check those protocols */
|
|
// need to do the ceck when protocol == http too (POST /gateway ...)
|
|
if(packet->detected_protocol_stack[0] == NDPI_PROTOCOL_UNKNOWN
|
|
|| packet->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP
|
|
|| packet->detected_protocol_stack[0] == NDPI_PROTOCOL_TLS
|
|
|| packet->detected_protocol_stack[0] == NDPI_PROTOCOL_STUN
|
|
)
|
|
ndpi_search_msn_tcp(ndpi_struct, flow);
|
|
} else if (packet->udp != NULL) {
|
|
ndpi_search_msn_udp_misc(ndpi_struct, flow);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void init_msn_dissector(struct ndpi_detection_module_struct *ndpi_struct,
|
|
u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
|
|
{
|
|
|
|
NDPI_BITMASK_RESET(ndpi_struct->callback_buffer[*id].excluded_protocol_bitmask);
|
|
|
|
ndpi_set_bitmask_protocol_detection("MSN", ndpi_struct, detection_bitmask, *id,
|
|
NDPI_PROTOCOL_MSN,
|
|
ndpi_search_msn,
|
|
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
|
|
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
|
|
ADD_TO_DETECTION_BITMASK);
|
|
|
|
*id += 1;
|
|
}
|
|
|