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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/*
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <cassert>
#include "response.h"
#include "util.h"
#include "parse_ctrl.h"
#include "audits/memman.h"
t_response::t_response() : t_sip_message() {}
t_response::t_response(const t_response &r) : t_sip_message(r) ,
code(r.code),
reason(r.reason),
src_ip_port_request(r.src_ip_port_request)
{
}
t_response::t_response(int _code, string _reason) : t_sip_message() {
code = _code;
if (_reason == "") {
switch (code) {
case 100: reason = REASON_100; break;
case 180: reason = REASON_180; break;
case 181: reason = REASON_181; break;
case 182: reason = REASON_182; break;
case 183: reason = REASON_183; break;
case 200: reason = REASON_200; break;
case 202: reason = REASON_202; break;
case 300: reason = REASON_300; break;
case 301: reason = REASON_301; break;
case 302: reason = REASON_302; break;
case 305: reason = REASON_305; break;
case 380: reason = REASON_380; break;
case 400: reason = REASON_400; break;
case 401: reason = REASON_401; break;
case 402: reason = REASON_402; break;
case 403: reason = REASON_403; break;
case 404: reason = REASON_404; break;
case 405: reason = REASON_405; break;
case 406: reason = REASON_406; break;
case 407: reason = REASON_407; break;
case 408: reason = REASON_408; break;
case 410: reason = REASON_410; break;
case 412: reason = REASON_412; break;
case 413: reason = REASON_413; break;
case 414: reason = REASON_414; break;
case 415: reason = REASON_415; break;
case 416: reason = REASON_416; break;
case 420: reason = REASON_420; break;
case 421: reason = REASON_421; break;
case 423: reason = REASON_423; break;
case 480: reason = REASON_480; break;
case 481: reason = REASON_481; break;
case 482: reason = REASON_482; break;
case 483: reason = REASON_483; break;
case 484: reason = REASON_484; break;
case 485: reason = REASON_485; break;
case 486: reason = REASON_486; break;
case 487: reason = REASON_487; break;
case 488: reason = REASON_488; break;
case 489: reason = REASON_489; break;
case 491: reason = REASON_491; break;
case 493: reason = REASON_493; break;
case 500: reason = REASON_500; break;
case 501: reason = REASON_501; break;
case 502: reason = REASON_502; break;
case 503: reason = REASON_503; break;
case 504: reason = REASON_504; break;
case 505: reason = REASON_505; break;
case 513: reason = REASON_513; break;
case 600: reason = REASON_600; break;
case 603: reason = REASON_603; break;
case 604: reason = REASON_604; break;
case 606: reason = REASON_606; break;
default: reason = "Unknown Error";
}
} else {
reason = _reason;
}
}
int t_response::get_class(void) const {
return code / 100;
}
bool t_response::is_provisional(void) const {
return (get_class() == R_1XX);
}
bool t_response::is_final(void) const {
return (get_class() != R_1XX);
}
bool t_response::is_success(void) const {
return (get_class() == R_2XX);
}
string t_response::encode(bool add_content_length) {
string s;
s = "SIP/" + version + ' ' + int2str(code, "%3d") + ' ' + reason;
s += CRLF;
s += t_sip_message::encode(add_content_length);
return s;
}
list<string> t_response::encode_env(void) {
string s;
list<string> l = t_sip_message::encode_env();
s = "SIPSTATUS_CODE=";
s += int2str(code, "%3d");
l.push_back(s);
s = "SIPSTATUS_REASON=";
s += reason;
l.push_back(s);
return l;
}
t_sip_message *t_response::copy(void) const {
t_sip_message *m = new t_response(*this);
MEMMAN_NEW(m);
return m;
}
bool t_response::is_valid(bool &fatal, string &reason) const {
if (!t_sip_message::is_valid(fatal, reason)) return false;
fatal = false;
switch(hdr_cseq.method) {
case INVITE:
if (get_class() == R_2XX && !hdr_contact.is_populated()) {
reason = "Contact header missing";
return false;
}
break;
case SUBSCRIBE:
// RFC 3265 7.1, 7.2
/*
Some SIP servers do not send the mandatory Expires header.
For interoperability this deviation is allowed.
if (get_class()== R_2XX && !hdr_expires.is_populated()) {
reason = "Expires header missing";
return false;
}
*/
switch (code) {
case R_489_BAD_EVENT:
if (!hdr_allow_events.is_populated()) {
reason = "Allow-Events header missing";
return false;
}
break;
}
break;
case NOTIFY:
// RFC 3265 7.1, 7.2
switch (code) {
case R_489_BAD_EVENT:
if (!hdr_allow_events.is_populated()) {
reason = "Allow-Events header is missing";
return false;
}
break;
}
break;
default:
break;
}
if (hdr_rseq.is_populated()) {
// RFC 3262 7.1
// The value ranges from 1 to 2**32 - 1
if (hdr_rseq.resp_nr == 0) {
reason = "RSeq is zero";
return false;
}
}
return true;
}
bool t_response::must_authenticate(void) const {
return (code == R_401_UNAUTHORIZED &&
hdr_www_authenticate.is_populated() ||
code == R_407_PROXY_AUTH_REQUIRED &&
hdr_proxy_authenticate.is_populated());
}
void t_response::get_destination(t_ip_port &ip_port) const {
assert(hdr_via.is_populated());
if (src_ip_port_request.transport == "tcp") {
// RFC 3261 18.2.2
// For TCP the response should be sent on the connection on which
// the request was received. So the address returned here is the
// alternative destination when the connection is closed already.
ip_port = src_ip_port_request;
} else {
hdr_via.get_response_dst(ip_port);
}
}
void t_response::calc_local_ip(void) {
t_ip_port dst;
get_destination(dst);
if (dst.ipaddr != 0) {
local_ip_ = get_src_ip4_address_for_dst(dst.ipaddr);
}
}
|
