1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "pidf_body.h"
#include <cassert>
#include <libxml/parser.h>
#include "log.h"
#include "util.h"
#include "audits/memman.h"
#define PIDF_XML_VERSION "1.0"
#define PIDF_NAMESPACE "urn:ietf:params:xml:ns:pidf"
#define IS_PIDF_TAG(node, tag) IS_XML_TAG(node, tag, PIDF_NAMESPACE)
#define IS_PIDF_ATTR(attr, attr_name) IS_XML_ATTR(attr, attr_name, PIDF_NAMESPACE)
bool t_pidf_xml_body::extract_status(void) {
assert(xml_doc);
xmlNode *root_element = NULL;
// Get root
root_element = xmlDocGetRootElement(xml_doc);
if (!root_element) {
log_file->write_report("PIDF document has no root element.",
"t_pidf_xml_body::extract_status",
LOG_NORMAL, LOG_WARNING);
return false;
}
// Check if root is <presence>
if (!IS_PIDF_TAG(root_element, "presence")) {
log_file->write_report("PIDF document has invalid root element.",
"t_pidf_xml_body::extract_status",
LOG_NORMAL, LOG_WARNING);
return false;
}
pres_entity.clear();
tuple_id.clear();
basic_status.clear();
// Get presence entity
xmlChar *prop_entity = xmlGetProp(root_element, BAD_CAST "entity");
if (prop_entity) {
pres_entity = (char *)prop_entity;
} else {
log_file->write_report("Presence entity is missing.",
"t_pidf_xml_body::extract_status",
LOG_NORMAL, LOG_WARNING);
}
xmlNode *child = root_element->children;
// Process children of root.
for (xmlNode *cur_node = child; cur_node; cur_node = cur_node->next) {
// Process tuple
if (IS_PIDF_TAG(cur_node, "tuple")) {
process_pidf_tuple(cur_node);
// Process the first tuple and then stop.
// Currently there is no support for multiple tuples
// or additional elements.
break;
}
}
return true;
}
void t_pidf_xml_body::process_pidf_tuple(xmlNode *tuple) {
assert(tuple);
// Get tuple id.
xmlChar *id = xmlGetProp(tuple, BAD_CAST "id");
if (id) {
tuple_id = (char *)id;
} else {
log_file->write_report("Tuple id is missing.",
"t_pidf_xml_body::process_pidf_tuple",
LOG_NORMAL, LOG_WARNING);
}
// Find status element
xmlNode *child = tuple->children;
for (xmlNode *cur_node = child; cur_node; cur_node = cur_node->next) {
// Process status
if (IS_PIDF_TAG(cur_node, "status")) {
process_pidf_status(cur_node);
break;
}
}
}
void t_pidf_xml_body::process_pidf_status(xmlNode *status) {
assert(status);
xmlNode *child = status->children;
for (xmlNode *cur_node = child; cur_node; cur_node = cur_node->next) {
// Process status
if (IS_PIDF_TAG(cur_node, "basic")) {
process_pidf_basic(cur_node);
break;
}
}
}
void t_pidf_xml_body::process_pidf_basic(xmlNode *basic) {
assert(basic);
xmlNode *child = basic->children;
if (child && child->type == XML_TEXT_NODE) {
basic_status = tolower((char*)child->content);
} else {
log_file->write_report("<basic> element has no content.",
"t_pidf_xml_body::process_pidf_basic",
LOG_NORMAL, LOG_WARNING);
}
}
void t_pidf_xml_body::create_xml_doc(const string &xml_version, const string &charset) {
t_sip_body_xml::create_xml_doc(xml_version, charset);
// presence
xmlNode *node_presence = xmlNewNode(NULL, BAD_CAST "presence");
xmlNs *ns_pidf = xmlNewNs(node_presence, BAD_CAST PIDF_NAMESPACE, NULL);
xmlNewProp(node_presence, BAD_CAST "entity", BAD_CAST pres_entity.c_str());
xmlDocSetRootElement(xml_doc, node_presence);
// tuple
xmlNode *node_tuple = xmlNewChild(node_presence, ns_pidf, BAD_CAST "tuple", NULL);
xmlNewProp(node_tuple, BAD_CAST "id", BAD_CAST tuple_id.c_str());
// status
xmlNode *node_status = xmlNewChild(node_tuple, ns_pidf, BAD_CAST "status", NULL);
// basic
xmlNewChild(node_status, ns_pidf,
BAD_CAST "basic", BAD_CAST basic_status.c_str());
}
t_pidf_xml_body::t_pidf_xml_body() : t_sip_body_xml ()
{}
t_sip_body *t_pidf_xml_body::copy(void) const {
t_pidf_xml_body *body = new t_pidf_xml_body(*this);
MEMMAN_NEW(body);
// Clear the xml_doc pointer in the new body, as a copy of the
// XML document must be copied to the body.
body->xml_doc = NULL;
copy_xml_doc(body);
return body;
}
t_body_type t_pidf_xml_body::get_type(void) const {
return BODY_PIDF_XML;
}
t_media t_pidf_xml_body::get_media(void) const {
return t_media("application", "pidf+xml");
}
string t_pidf_xml_body::get_pres_entity(void) const {
return pres_entity;
}
string t_pidf_xml_body::get_tuple_id(void) const {
return tuple_id;
}
string t_pidf_xml_body::get_basic_status(void) const {
return basic_status;
}
void t_pidf_xml_body::set_pres_entity(const string &_pres_entity) {
clear_xml_doc();
pres_entity = _pres_entity;
}
void t_pidf_xml_body::set_tuple_id(const string &_tuple_id) {
clear_xml_doc();
tuple_id = _tuple_id;
}
void t_pidf_xml_body::set_basic_status(const string &_basic_status) {
clear_xml_doc();
basic_status = _basic_status;
}
bool t_pidf_xml_body::parse(const string &s) {
if (t_sip_body_xml::parse(s)) {
if (!extract_status()) {
MEMMAN_DELETE(xml_doc);
xmlFreeDoc(xml_doc);
xml_doc = NULL;
}
}
return (xml_doc != NULL);
}
|
