Asterisk - The Open Source Telephony Project GIT-master-d5a0626
presence_xml.c
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1/*
2 * asterisk -- An open source telephony toolkit.
3 *
4 * Copyright (C) 2013, Digium, Inc.
5 *
6 * Kevin Harwell <kharwell@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#include "asterisk.h"
20
21#include <pjsip.h>
22#include <pjsip_simple.h>
23#include <pjlib.h>
24
25#include "asterisk/module.h"
26#include "asterisk/pbx.h"
28
29void ast_sip_sanitize_xml(const char *input, char *output, size_t len)
30{
31 char *copy = ast_strdupa(input);
32 char *break_point;
33 size_t remaining = len - 1;
34
35 output[0] = '\0';
36
37 while ((break_point = strpbrk(copy, "<>\"&'\n\r")) && remaining) {
38 char to_escape = *break_point;
39
40 *break_point = '\0';
41 strncat(output, copy, remaining);
42
43 /* The strncat function will write remaining+1 if the string length is
44 * equal to or greater than the size provided to it. We take this into
45 * account by subtracting 1, which ensures that the NULL byte is written
46 * inside of the provided buffer.
47 */
48 remaining = len - strlen(output) - 1;
49
50 switch (to_escape) {
51 case '<':
52 strncat(output, "&lt;", remaining);
53 break;
54 case '>':
55 strncat(output, "&gt;", remaining);
56 break;
57 case '"':
58 strncat(output, "&quot;", remaining);
59 break;
60 case '&':
61 strncat(output, "&amp;", remaining);
62 break;
63 case '\'':
64 strncat(output, "&apos;", remaining);
65 break;
66 case '\r':
67 strncat(output, "&#13;", remaining);
68 break;
69 case '\n':
70 strncat(output, "&#10;", remaining);
71 break;
72 };
73
74 copy = break_point + 1;
75 remaining = len - strlen(output) - 1;
76 }
77
78 /* Be sure to copy everything after the final bracket */
79 if (*copy && remaining) {
80 strncat(output, copy, remaining);
81 }
82}
83
84void ast_sip_presence_exten_state_to_str(int state, char **statestring, char **pidfstate,
85 char **pidfnote, enum ast_sip_pidf_state *local_state,
86 unsigned int notify_early_inuse_ringing)
87{
88 switch (state) {
90 *statestring = "early";
91 *local_state = NOTIFY_INUSE;
92 *pidfstate = "on-the-phone";
93 *pidfnote = "Ringing";
94 break;
96 if (notify_early_inuse_ringing) {
97 *statestring = "early";
98 } else {
99 *statestring = "confirmed";
100 }
101 *local_state = NOTIFY_INUSE;
102 *pidfstate = "on-the-phone";
103 *pidfnote = "Ringing";
104 break;
106 *statestring = "confirmed";
107 *local_state = NOTIFY_INUSE;
108 *pidfstate = "on-the-phone";
109 *pidfnote = "On the phone";
110 break;
112 *statestring = "confirmed";
113 *local_state = NOTIFY_INUSE;
114 *pidfstate = "on-the-phone";
115 *pidfnote = "On the phone";
116 break;
118 *statestring = "terminated";
119 *local_state = NOTIFY_CLOSED;
120 *pidfstate = "--";
121 *pidfnote = "Unavailable";
122 break;
124 *statestring = "confirmed";
125 *local_state = NOTIFY_INUSE;
126 *pidfstate = "on-the-phone";
127 *pidfnote = "On hold";
128 break;
130 default:
131 /* Default setting */
132 *statestring = "terminated";
133 *local_state = NOTIFY_OPEN;
134 *pidfstate = "--";
135 *pidfnote = "Ready";
136 break;
137 }
138}
139
140pj_xml_attr *ast_sip_presence_xml_create_attr(pj_pool_t *pool,
141 pj_xml_node *node, const char *name, const char *value)
142{
143 pj_xml_attr *attr = PJ_POOL_ALLOC_T(pool, pj_xml_attr);
144
145 pj_strdup2(pool, &attr->name, name);
146 pj_strdup2(pool, &attr->value, value);
147
148 pj_xml_add_attr(node, attr);
149 return attr;
150}
151
152pj_xml_node *ast_sip_presence_xml_create_node(pj_pool_t *pool,
153 pj_xml_node *parent, const char* name)
154{
155 pj_xml_node *node = PJ_POOL_ALLOC_T(pool, pj_xml_node);
156
157 pj_list_init(&node->attr_head);
158 pj_list_init(&node->node_head);
159
160 pj_strdup2(pool, &node->name, name);
161
162 node->content.ptr = NULL;
163 node->content.slen = 0;
164
165 if (parent) {
166 pj_xml_add_node(parent, node);
167 }
168
169 return node;
170}
171
173 pj_xml_node *parent, const char *node_name, const char *attr_name,
174 pj_xml_node **node, pj_xml_attr **attr)
175{
176 pj_str_t name;
177
178 if (!(*node = pj_xml_find_node(parent, pj_cstr(&name, node_name)))) {
179 *node = ast_sip_presence_xml_create_node(pool, parent, node_name);
180 }
181
182 if (!(*attr = pj_xml_find_attr(*node, pj_cstr(&name, attr_name), NULL))) {
183 *attr = ast_sip_presence_xml_create_attr(pool, *node, attr_name, "");
184 }
185}
static int copy(char *infile, char *outfile)
Utility function to copy a file.
static int input(yyscan_t yyscanner)
Definition: ast_expr2f.c:1570
Asterisk main include file. File version handling, generic pbx functions.
#define ast_strdupa(s)
duplicate a string in memory from the stack
Definition: astmm.h:298
static const char name[]
Definition: format_mp3.c:68
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
Asterisk module definitions.
Core PBX routines and definitions.
@ AST_EXTENSION_RINGING
Definition: pbx.h:68
@ AST_EXTENSION_NOT_INUSE
Definition: pbx.h:64
@ AST_EXTENSION_INUSE
Definition: pbx.h:65
@ AST_EXTENSION_UNAVAILABLE
Definition: pbx.h:67
@ AST_EXTENSION_ONHOLD
Definition: pbx.h:69
@ AST_EXTENSION_BUSY
Definition: pbx.h:66
void ast_sip_sanitize_xml(const char *input, char *output, size_t len)
Replace offensive XML characters with XML entities.
Definition: presence_xml.c:29
void ast_sip_presence_xml_find_node_attr(pj_pool_t *pool, pj_xml_node *parent, const char *node_name, const char *attr_name, pj_xml_node **node, pj_xml_attr **attr)
Find an attribute within a given node.
Definition: presence_xml.c:172
void ast_sip_presence_exten_state_to_str(int state, char **statestring, char **pidfstate, char **pidfnote, enum ast_sip_pidf_state *local_state, unsigned int notify_early_inuse_ringing)
Convert extension state to relevant PIDF strings.
Definition: presence_xml.c:84
pj_xml_node * ast_sip_presence_xml_create_node(pj_pool_t *pool, pj_xml_node *parent, const char *name)
Create XML node.
Definition: presence_xml.c:152
pj_xml_attr * ast_sip_presence_xml_create_attr(pj_pool_t *pool, pj_xml_node *node, const char *name, const char *value)
Create XML attribute.
Definition: presence_xml.c:140
ast_sip_pidf_state
@ NOTIFY_CLOSED
@ NOTIFY_INUSE
#define NULL
Definition: resample.c:96
Definition: test_heap.c:38
int value
Definition: syslog.c:37