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
|
/*
* $Id$
*
* Copyright (C) 2012 Smile Communications, jason.penton@smilecoms.com
* Copyright (C) 2012 Smile Communications, richard.good@smilecoms.com
*
* The initial version of this code was written by Dragos Vingarzan
* (dragos(dot)vingarzan(at)fokus(dot)fraunhofer(dot)de and the
* Fruanhofer Institute. It was and still is maintained in a separate
* branch of the original SER. We are therefore migrating it to
* Kamailio/SR and look forward to maintaining it from here on out.
* 2011/2012 Smile Communications, Pty. Ltd.
* ported/maintained/improved by
* Jason Penton (jason(dot)penton(at)smilecoms.com and
* Richard Good (richard(dot)good(at)smilecoms.com) as part of an
* effort to add full IMS support to Kamailio/SR using a new and
* improved architecture
*
* NB: Alot of this code was originally part of OpenIMSCore,
* FhG Fokus.
* Copyright (C) 2004-2006 FhG Fokus
* Thanks for great work! This is an effort to
* break apart the various CSCF functions into logically separate
* components. We hope this will drive wider use. We also feel
* that in this way the architecture is more complete and thereby easier
* to manage in the Kamailio/SR environment
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*
* History:
* --------
* 2011-02-02 initial version (jason.penton)
*/
#include "../cdp_avp/mod_export.h"
#include "../../modules/dialog_ng/dlg_load.h"
#include "../ims_usrloc_pcscf/usrloc.h"
#include "rx_authdata.h"
#include "mod.h"
#include "rx_avp.h"
#include "rx_str.h"
#include "../../lib/ims/ims_getters.h"
extern str IMS_Serv_AVP_val;
int rx_send_str(str *rx_session_id) {
LM_DBG("Sending STR\n");
AAASession *auth = 0;
AAAMessage *str = NULL;
AAA_AVP * avp = NULL;
if (!rx_session_id || !rx_session_id->s || !rx_session_id->len) {
LM_ERR("Dialog has no Rx session associated\n");
return CSCF_RETURN_FALSE;
}else
{
LM_DBG("Rx session id exists\n");
}
LM_DBG("About to try get Auth session\n");
auth = cdpb.AAAGetAuthSession(*rx_session_id);
if (!auth) {
LM_DBG("Could not get Auth Session for session id: [%.*s] - this is fine as this might have been started by already sending an STR\n", rx_session_id->len, rx_session_id->s);
return CSCF_RETURN_FALSE;
}else{
LM_DBG("Retrieved Auth Session for session id: [%.*s]\n", rx_session_id->len, rx_session_id->s);
}
LM_DBG("Got auth session\n");
LM_DBG("dest host [%.*s]\n", auth->dest_host.len, auth->dest_host.s);
LM_DBG("dest realm [%.*s]\n", auth->dest_realm.len, auth->dest_realm.s);
LM_DBG("id [%.*s]\n", auth->id.len, auth->id.s);
//create STR
char x[4];
LM_DBG("Checking auth state\n");
if (auth->u.auth.state == AUTH_ST_DISCON) {
// If we are in DISCON is because an STR was already sent
// so just wait for STA or for Grace Timout to happen
LM_DBG("Hmmm, auth session already in disconnected state\n");
goto error;
}
LM_DBG("Creating STR\n");
str = cdpb.AAACreateRequest(IMS_Rx, IMS_STR, Flag_Proxyable, auth);
if (!str) {
LM_ERR("Unable to create STR request\n");
goto error;
}
LM_DBG("Adding Auth app id\n");
/* Add Auth-Application-Id AVP */
if (!rx_add_auth_application_id_avp(str, IMS_Rx)) goto error;
if (!rx_add_vendor_specific_application_id_group(str, IMS_vendor_id_3GPP, IMS_Rx)) goto error;
LM_DBG("Adding destination realm\n");
/* Add Destination-Realm AVP, if not already there */
avp = cdpb.AAAFindMatchingAVP(str, str->avpList.head, AVP_Destination_Realm, 0, AAA_FORWARD_SEARCH);
if (!avp) {
if (rx_dest_realm.len && !rx_add_destination_realm_avp(str, rx_dest_realm)) goto error;
}
LM_DBG("Adding AF app id\n");
/* Add AF-Application-Identifier AVP */
if (!rx_add_avp(str, IMS_Serv_AVP_val.s, IMS_Serv_AVP_val.len,
AVP_IMS_AF_Application_Identifier,
AAA_AVP_FLAG_MANDATORY, IMS_vendor_id_3GPP,
AVP_DUPLICATE_DATA, __FUNCTION__)) goto error;
LM_DBG("Adding Termination cause\n");
/* Termination-Cause */
set_4bytes(x, 1);
if (!rx_add_avp(str, x, 4, AVP_Termination_Cause,
AAA_AVP_FLAG_MANDATORY, 0,
AVP_DUPLICATE_DATA, __FUNCTION__)) goto error;
LM_DBG("Unlocking AAA session...\n");
cdpb.AAASessionsUnlock(auth->hash);
LM_DBG("sending STR to PCRF\n");
if (rx_forced_peer.len)
cdpb.AAASendMessageToPeer(str, &rx_forced_peer , NULL, NULL);
else
cdpb.AAASendMessage(str, NULL, NULL);
LM_DBG("Successfully sent Rx STR for session: [%.*s]\n", rx_session_id->len, rx_session_id->s);
return CSCF_RETURN_TRUE;
error:
LM_DBG("Error sending Rx STR for session: [%.*s]\n", rx_session_id->len, rx_session_id->s);
if (str) cdpb.AAAFreeMessage(&str);
if (auth) {
cdpb.AAASessionsUnlock(auth->hash);
cdpb.AAADropAuthSession(auth);
auth = 0;
}
return CSCF_RETURN_FALSE;
}
|
