/src/ndpi/src/lib/protocols/rtsp.c
Line | Count | Source |
1 | | /* |
2 | | * rtsp.c |
3 | | * |
4 | | * Copyright (C) 2009-11 - ipoque GmbH |
5 | | * Copyright (C) 2011-25 - ntop.org |
6 | | * |
7 | | * This file is part of nDPI, an open source deep packet inspection |
8 | | * library based on the OpenDPI and PACE technology by ipoque GmbH |
9 | | * |
10 | | * nDPI is free software: you can redistribute it and/or modify |
11 | | * it under the terms of the GNU Lesser General Public License as published by |
12 | | * the Free Software Foundation, either version 3 of the License, or |
13 | | * (at your option) any later version. |
14 | | * |
15 | | * nDPI is distributed in the hope that it will be useful, |
16 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 | | * GNU Lesser General Public License for more details. |
19 | | * |
20 | | * You should have received a copy of the GNU Lesser General Public License |
21 | | * along with nDPI. If not, see <http://www.gnu.org/licenses/>. |
22 | | * |
23 | | */ |
24 | | |
25 | | #include "ndpi_protocol_ids.h" |
26 | | |
27 | | #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_RTSP |
28 | | |
29 | | #include "ndpi_api.h" |
30 | | #include "ndpi_private.h" |
31 | | |
32 | | |
33 | | static void ndpi_int_rtsp_add_connection(struct ndpi_detection_module_struct *ndpi_struct, |
34 | | struct ndpi_flow_struct *flow) |
35 | 0 | { |
36 | 0 | NDPI_LOG_INFO(ndpi_struct, "found RTSP\n"); |
37 | 0 | ndpi_set_detected_protocol_keeping_master(ndpi_struct, flow, NDPI_PROTOCOL_RTSP, |
38 | 0 | NDPI_CONFIDENCE_DPI); |
39 | 0 | } |
40 | | |
41 | | /* this function searches for a rtsp-"handshake" over tcp or udp. */ |
42 | | static void ndpi_search_rtsp_tcp_udp(struct ndpi_detection_module_struct *ndpi_struct, |
43 | | struct ndpi_flow_struct *flow) |
44 | 0 | { |
45 | 0 | struct ndpi_packet_struct *packet = &ndpi_struct->packet; |
46 | |
|
47 | 0 | NDPI_LOG_DBG(ndpi_struct, "search RTSP\n"); |
48 | |
|
49 | 0 | if (packet->parsed_lines == 0) |
50 | 0 | { |
51 | 0 | ndpi_parse_packet_line_info(ndpi_struct, flow); |
52 | 0 | } |
53 | |
|
54 | 0 | if (packet->parsed_lines > 0 && |
55 | 0 | (LINE_ENDS(packet->line[0], "RTSP/1.0") != 0 || |
56 | 0 | LINE_STARTS(packet->line[0], "RTSP/1.0") != 0 || /* Response */ |
57 | 0 | LINE_ENDS(packet->accept_line, "application/x-rtsp-tunnelled") != 0 || |
58 | 0 | LINE_ENDS(packet->content_line, "application/x-rtsp-tunnelled") != 0 |
59 | 0 | /* Should we also check for "rtsp://" in the packet? */)) |
60 | 0 | { |
61 | 0 | ndpi_int_rtsp_add_connection(ndpi_struct, flow); |
62 | | |
63 | | /* Extract some metadata HTTP-like */ |
64 | 0 | if(packet->user_agent_line.ptr != NULL) |
65 | 0 | ndpi_user_agent_set(flow, packet->user_agent_line.ptr, packet->user_agent_line.len); |
66 | |
|
67 | 0 | return; |
68 | 0 | } |
69 | | |
70 | 0 | NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow); |
71 | 0 | } |
72 | | |
73 | | |
74 | | void init_rtsp_dissector(struct ndpi_detection_module_struct *ndpi_struct) |
75 | 0 | { |
76 | 0 | register_dissector("RTSP", ndpi_struct, |
77 | 0 | ndpi_search_rtsp_tcp_udp, |
78 | 0 | NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION, |
79 | 0 | 1, NDPI_PROTOCOL_RTSP); |
80 | 0 | } |