stasis/app.c: Optimize stasis_app_get_debug_by_name()
[asterisk/asterisk.git] / res / res_pjsip_pidf_eyebeam_body_supplement.c
1 /*
2  * asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 2014, Digium, Inc.
5  *
6  * Mark Michelson <mmichelson@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 /*** MODULEINFO
20         <depend>pjproject</depend>
21         <depend>res_pjsip</depend>
22         <depend>res_pjsip_pubsub</depend>
23         <support_level>core</support_level>
24  ***/
25
26 #include "asterisk.h"
27
28 #include <pjsip.h>
29 #include <pjsip_simple.h>
30 #include <pjlib.h>
31
32 #include "asterisk/module.h"
33 #include "asterisk/res_pjsip.h"
34 #include "asterisk/res_pjsip_pubsub.h"
35 #include "asterisk/res_pjsip_presence_xml.h"
36 #include "asterisk/res_pjsip_body_generator_types.h"
37
38 /*!
39  * \internal
40  * \brief Adds non standard elements to the xml body
41  *
42  * This is some code that was part of the original chan_sip implementation
43  * that is not part of the RFC 3863 definition, but we are keeping available
44  * for backward compatability. The original comment stated that Eyebeam
45  * supports this format.
46  */
47 static void add_eyebeam(pj_pool_t *pool, pj_xml_node *node, const char *pidfstate)
48 {
49         static const char *XMLNS_DM_PREFIX = "xmlns:dm";
50         static const char *XMLNS_DM = "urn:ietf:params:xml:ns:pidf:data-model";
51
52         static const char *XMLNS_RPID_PREFIX = "xmlns:rpid";
53         static const char *XMLNS_RPID = "urn:ietf:params:xml:ns:pidf:rpid";
54
55         pj_xml_node *person = ast_sip_presence_xml_create_node(pool, node, "dm:person");
56
57         if (pidfstate[0] != '-') {
58                 pj_xml_node *activities = ast_sip_presence_xml_create_node(pool, person, "rpid:activities");
59                 size_t str_size = sizeof("rpid:") + strlen(pidfstate);
60                 char *act_str = ast_alloca(str_size);
61
62                 /* Safe */
63                 strcpy(act_str, "rpid:");
64                 strcat(act_str, pidfstate);
65
66                 ast_sip_presence_xml_create_node(pool, activities, act_str);
67         }
68
69         ast_sip_presence_xml_create_attr(pool, node, XMLNS_DM_PREFIX, XMLNS_DM);
70         ast_sip_presence_xml_create_attr(pool, node, XMLNS_RPID_PREFIX, XMLNS_RPID);
71 }
72
73 static int pidf_supplement_body(void *body, void *data)
74 {
75         pjpidf_pres *pres = body;
76         struct ast_sip_exten_state_data *state_data = data;
77         char *statestring = NULL, *pidfstate = NULL, *pidfnote = NULL;
78         enum ast_sip_pidf_state local_state;
79
80         ast_sip_presence_exten_state_to_str(state_data->exten_state, &statestring,
81                         &pidfstate, &pidfnote, &local_state, 0);
82
83         add_eyebeam(state_data->pool, pres, pidfstate);
84         return 0;
85 }
86
87 static struct ast_sip_pubsub_body_supplement pidf_supplement = {
88         .type = "application",
89         .subtype = "pidf+xml",
90         .supplement_body = pidf_supplement_body,
91 };
92
93 static int load_module(void)
94 {
95         CHECK_PJSIP_PUBSUB_MODULE_LOADED();
96
97         if (ast_sip_pubsub_register_body_supplement(&pidf_supplement)) {
98                 return AST_MODULE_LOAD_DECLINE;
99         }
100         return AST_MODULE_LOAD_SUCCESS;
101 }
102
103 static int unload_module(void)
104 {
105         ast_sip_pubsub_unregister_body_supplement(&pidf_supplement);
106         return 0;
107 }
108
109 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP PIDF Eyebeam supplement",
110         .support_level = AST_MODULE_SUPPORT_CORE,
111         .load = load_module,
112         .unload = unload_module,
113         .load_pri = AST_MODPRI_CHANNEL_DEPEND,
114 );