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
|
/*
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 "presence_subscription.h"
#include <cassert>
#include "pidf_body.h"
#include "log.h"
#include "util.h"
#include "parser/hdr_event.h"
#include "audits/memman.h"
t_request *t_presence_subscription::create_subscribe(unsigned long expires) const {
t_request *r = t_subscription::create_subscribe(expires);
SET_PRESENCE_HDR_ACCEPT(r->hdr_accept);
return r;
}
t_presence_subscription::t_presence_subscription(t_presence_dialog *_dialog, t_presence_state *_state) :
t_subscription(_dialog, SR_SUBSCRIBER, SIP_EVENT_PRESENCE),
presence_state(_state)
{
}
bool t_presence_subscription::recv_notify(t_request *r, t_tuid tuid, t_tid tid) {
if (t_subscription::recv_notify(r, tuid, tid)) return true;
bool unsupported_body = false;
// NOTE: if the subscription is still pending (RFC 3265 3.2.4), then the
// information in the body has no meaning.
// NOTE: a NOTIFY request may have no body (RFC 3856 6.6.2)
if (r->body && r->body->get_type() == BODY_PIDF_XML &&
!is_pending())
{
t_pidf_xml_body *body = dynamic_cast<t_pidf_xml_body *>(r->body);
assert(body);
string basic = body->get_basic_status();
if (basic == PIDF_STATUS_BASIC_OPEN) {
presence_state->set_basic_state(t_presence_state::ST_BASIC_OPEN);
} else if (basic == PIDF_STATUS_BASIC_CLOSED) {
presence_state->set_basic_state(t_presence_state::ST_BASIC_CLOSED);
} else {
log_file->write_header("t_presence_subscription::recv_notify",
LOG_NORMAL, LOG_WARNING);
log_file->write_raw("Unknown basic status in pidf: ");
log_file->write_raw(basic);
log_file->write_endl();
log_file->write_footer();
presence_state->set_basic_state(t_presence_state::ST_BASIC_UNKNOWN);
}
}
// Verify if there is an usupported body.
if (r->body && r->body->get_type() != BODY_PIDF_XML) {
unsupported_body = true;
}
if (state == SS_TERMINATED) {
if (may_resubscribe) {
presence_state->set_basic_state(t_presence_state::ST_BASIC_UNKNOWN);
log_file->write_report("Presence subscription terminated.",
"t_presence_subscription::recv_notify");
} else {
if (reason_termination == EV_REASON_REJECTED) {
presence_state->set_basic_state(t_presence_state::ST_BASIC_REJECTED);
log_file->write_report("Presence agent rejected the subscription.",
"t_presence_subscription::recv_notify");
} else {
// The PA ended the subscription and indicated
// that resubscription is not possible. So no presence status
// can be retrieved anymore. This should not happen.
// Show it as a failure to the user.
presence_state->set_failure_msg(reason_termination);
presence_state->set_basic_state(t_presence_state::ST_BASIC_FAILED);
log_file->write_report(
"Presence agent permanently terminated the subscription.",
"t_presence_subscription::recv_notify");
}
}
}
t_response *resp;
if (unsupported_body) {
resp = r->create_response(R_415_UNSUPPORTED_MEDIA_TYPE);
SET_PRESENCE_HDR_ACCEPT(r->hdr_accept);
} else {
resp = r->create_response(R_200_OK);
}
send_response(user_config, resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
return true;
}
bool t_presence_subscription::recv_subscribe_response(t_response *r, t_tuid tuid, t_tid tid) {
// Parent handles the SUBSCRIBE response
(void)t_subscription::recv_subscribe_response(r, tuid, tid);
// If the subscription is terminated after the SUBSCRIBE response, it means
// that subscription failed.
if (state == SS_TERMINATED) {
if (r->code == R_403_FORBIDDEN || r->code == R_603_DECLINE) {
presence_state->set_basic_state(t_presence_state::ST_BASIC_REJECTED);
log_file->write_report("Presence subscription rejected.",
"t_presence_subscription::recv_subscribe_response");
} else {
string failure = int2str(r->code);
failure += ' ';
failure += r->reason;
presence_state->set_failure_msg(failure);
presence_state->set_basic_state(t_presence_state::ST_BASIC_FAILED);
log_file->write_report("Presence subscription failed.",
"t_presence_subscription::recv_subscribe_response");
}
}
return true;
}
|
