bb96c8dd38b4003d0f0978e2c0394786b0d2ccce
[asterisk/asterisk.git] / res / res_hep_rtcp.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 1999 - 2014, Digium, Inc.
5  *
6  * Matt Jordan <mjordan@digium.com>
7  *
8  * See http://www.asterisk.org for more information about
9  * the Asterisk project. Please do not directly contact
10  * any of the maintainers of this project for assistance;
11  * the project provides a web site, mailing lists and IRC
12  * channels for your use.
13  *
14  * This program is free software, distributed under the terms of
15  * the GNU General Public License Version 2. See the LICENSE file
16  * at the top of the source tree.
17  */
18
19 /*!
20  * \file
21  * \brief RTCP logging with Homer
22  *
23  * \author Matt Jordan <mjordan@digium.com>
24  *
25  */
26
27 /*** MODULEINFO
28         <depend>res_hep</depend>
29         <support_level>extended</support_level>
30  ***/
31
32 #include "asterisk.h"
33
34 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
35
36 #include <pjsip.h>
37
38 #include "asterisk/res_hep.h"
39 #include "asterisk/module.h"
40 #include "asterisk/netsock2.h"
41 #include "asterisk/stasis.h"
42 #include "asterisk/rtp_engine.h"
43 #include "asterisk/json.h"
44 #include "asterisk/config.h"
45
46 static struct stasis_subscription *stasis_rtp_subscription;
47
48 static void rtcp_message_handler(struct stasis_message *message)
49 {
50
51         RAII_VAR(struct ast_json *, json_payload, NULL, ast_json_unref);
52         RAII_VAR(char *,  payload, NULL, ast_json_free);
53         struct ast_json *json_blob;
54         struct ast_json *json_channel;
55         struct ast_json *json_rtcp;
56         struct hepv3_capture_info *capture_info;
57         struct ast_json *from;
58         struct ast_json *to;
59         struct timeval current_time = ast_tvnow();
60
61         json_payload = stasis_message_to_json(message, NULL);
62         if (!json_payload) {
63                 return;
64         }
65
66         json_blob = ast_json_object_get(json_payload, "blob");
67         if (!json_blob) {
68                 return;
69         }
70
71         json_channel = ast_json_object_get(json_payload, "channel");
72         if (!json_channel) {
73                 return;
74         }
75
76         json_rtcp = ast_json_object_get(json_payload, "rtcp_report");
77         if (!json_rtcp) {
78                 return;
79         }
80
81         from = ast_json_object_get(json_blob, "from");
82         to = ast_json_object_get(json_blob, "to");
83         if (!from || !to) {
84                 return;
85         }
86
87         payload = ast_json_dump_string(json_rtcp);
88         if (ast_strlen_zero(payload)) {
89                 return;
90         }
91
92         capture_info = hepv3_create_capture_info(payload, strlen(payload));
93         if (!capture_info) {
94                 return;
95         }
96         ast_sockaddr_parse(&capture_info->src_addr, ast_json_string_get(from), PARSE_PORT_REQUIRE);
97         ast_sockaddr_parse(&capture_info->dst_addr, ast_json_string_get(to), PARSE_PORT_REQUIRE);
98
99         capture_info->uuid = ast_strdup(ast_json_string_get(ast_json_object_get(json_channel, "name")));
100         if (!capture_info->uuid) {
101                 ao2_ref(capture_info, -1);
102                 return;
103         }
104         capture_info->capture_time = current_time;
105         capture_info->capture_type = HEPV3_CAPTURE_TYPE_RTCP;
106         capture_info->zipped = 0;
107
108         hepv3_send_packet(capture_info);
109 }
110
111 static void rtp_topic_handler(void *data, struct stasis_subscription *sub, struct stasis_message *message)
112 {
113         struct stasis_message_type *message_type = stasis_message_type(message);
114
115         if ((message_type == ast_rtp_rtcp_sent_type()) ||
116                 (message_type == ast_rtp_rtcp_received_type())) {
117                 rtcp_message_handler(message);
118         }
119 }
120
121 static int load_module(void)
122 {
123
124         stasis_rtp_subscription = stasis_subscribe(ast_rtp_topic(),
125                 rtp_topic_handler, NULL);
126         if (!stasis_rtp_subscription) {
127                 return AST_MODULE_LOAD_FAILURE;
128         }
129
130         return AST_MODULE_LOAD_SUCCESS;
131 }
132
133 static int unload_module(void)
134 {
135         if (stasis_rtp_subscription) {
136                 stasis_rtp_subscription = stasis_unsubscribe(stasis_rtp_subscription);
137         }
138
139         return 0;
140 }
141
142 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "RTCP HEPv3 Logger",
143         .load = load_module,
144         .unload = unload_module,
145         .load_pri = AST_MODPRI_DEFAULT,
146         );