Merge "res_pjsip/res_pjsip_callerid: NULL check on caller id name string"
[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_PP = "xmlns:pp";
50         static const char *XMLNS_PERSON = "urn:ietf:params:xml:ns:pidf:person";
51
52         static const char *XMLNS_ES = "xmlns:es";
53         static const char *XMLNS_RPID_STATUS = "urn:ietf:params:xml:ns:pidf:rpid:status:rpid-status";
54
55         static const char *XMLNS_EP = "xmlns:ep";
56         static const char *XMLNS_RPID_PERSON = "urn:ietf:params:xml:ns:pidf:rpid:rpid-person";
57
58         pj_xml_node *person = ast_sip_presence_xml_create_node(pool, node, "pp:person");
59         pj_xml_node *status = ast_sip_presence_xml_create_node(pool, person, "status");
60
61         if (pidfstate[0] != '-') {
62                 pj_xml_node *activities = ast_sip_presence_xml_create_node(pool, status, "ep:activities");
63                 size_t str_size = sizeof("ep:") + strlen(pidfstate);
64
65                 activities->content.ptr = pj_pool_alloc(pool, str_size);
66                 activities->content.slen = pj_ansi_snprintf(activities->content.ptr, str_size,
67                                 "ep:%s", pidfstate);
68         }
69
70         ast_sip_presence_xml_create_attr(pool, node, XMLNS_PP, XMLNS_PERSON);
71         ast_sip_presence_xml_create_attr(pool, node, XMLNS_ES, XMLNS_RPID_STATUS);
72         ast_sip_presence_xml_create_attr(pool, node, XMLNS_EP, XMLNS_RPID_PERSON);
73 }
74
75 static int pidf_supplement_body(void *body, void *data)
76 {
77         pjpidf_pres *pres = body;
78         struct ast_sip_exten_state_data *state_data = data;
79         char *statestring = NULL, *pidfstate = NULL, *pidfnote = NULL;
80         enum ast_sip_pidf_state local_state;
81
82         ast_sip_presence_exten_state_to_str(state_data->exten_state, &statestring,
83                         &pidfstate, &pidfnote, &local_state);
84
85         add_eyebeam(state_data->pool, pres, pidfstate);
86         return 0;
87 }
88
89 static struct ast_sip_pubsub_body_supplement pidf_supplement = {
90         .type = "application",
91         .subtype = "pidf+xml",
92         .supplement_body = pidf_supplement_body,
93 };
94
95 static int load_module(void)
96 {
97         CHECK_PJSIP_PUBSUB_MODULE_LOADED();
98
99         if (ast_sip_pubsub_register_body_supplement(&pidf_supplement)) {
100                 return AST_MODULE_LOAD_DECLINE;
101         }
102         return AST_MODULE_LOAD_SUCCESS;
103 }
104
105 static int unload_module(void)
106 {
107         ast_sip_pubsub_unregister_body_supplement(&pidf_supplement);
108         return 0;
109 }
110
111 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP PIDF Eyebeam supplement",
112         .support_level = AST_MODULE_SUPPORT_CORE,
113         .load = load_module,
114         .unload = unload_module,
115         .load_pri = AST_MODPRI_CHANNEL_DEPEND,
116 );