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
|
/*
* $Id: script_cb.c,v 1.3 2005/06/20 07:46:45 bogdan_iancu Exp $
*
* Script callbacks
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of openser, a free SIP server.
*
* openser 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
*
* openser 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
*
* History:
* --------
* 2003-03-29 cleaning pkg allocation introduced (jiri)
* 2003-03-19 replaced all mallocs/frees w/ pkg_malloc/pkg_free (andrei)
* 2005-02-13 script callbacks devided into request and reply types (bogdan)
*/
#include <stdlib.h>
#include "script_cb.h"
#include "dprint.h"
#include "error.h"
#include "mem/mem.h"
static struct script_cb *pre_req_cb=0;
static struct script_cb *post_req_cb=0;
static struct script_cb *pre_rpl_cb=0;
static struct script_cb *post_rpl_cb=0;
static unsigned int cb_id=0;
static inline int add_callback( struct script_cb **list,
cb_function f, void *param)
{
struct script_cb *new_cb;
new_cb=pkg_malloc(sizeof(struct script_cb));
if (new_cb==0) {
LOG(L_ERR, "ERROR:add_script_callback: out of memory\n");
return -1;
}
new_cb->cbf = f;
new_cb->id = cb_id++;
new_cb->param = param;
/* link at the beginning of the list */
new_cb->next = *list;
*list = new_cb;
return 0;
}
int register_script_cb( cb_function f, int type, void *param )
{
/* type checkings */
if ( (type&(REQ_TYPE_CB|RPL_TYPE_CB))==0 ) {
LOG(L_CRIT,"BUG:register_script_cb: REQUEST or REPLY "
"type not specified\n");
goto error;
}
if ( (type&(PRE_SCRIPT_CB|POST_SCRIPT_CB))==0 ||
(type&PRE_SCRIPT_CB && type&POST_SCRIPT_CB) ) {
LOG(L_CRIT,"BUG:register_script_cb: callback POST or PRE type must "
"be exactly one\n");
goto error;
}
if (type&REQ_TYPE_CB) {
/* callback for request script */
if (type&PRE_SCRIPT_CB) {
if (add_callback( &pre_req_cb, f, param)<0)
goto add_error;
} else if (type&POST_SCRIPT_CB) {
if (add_callback( &post_req_cb, f, param)<0)
goto add_error;
}
}
if (type&RPL_TYPE_CB) {
/* callback (also) for reply script */
if (type&PRE_SCRIPT_CB) {
if (add_callback( &pre_rpl_cb, f, param)<0)
goto add_error;
} else if (type&POST_SCRIPT_CB) {
if (add_callback( &post_rpl_cb, f, param)<0)
goto add_error;
}
}
return 0;
add_error:
LOG(L_ERR,"ERROR:register_script_cb: failed to add callback\n");
error:
return -1;
}
static inline void destroy_cb_list(struct script_cb **list)
{
struct script_cb *foo;
while( *list ) {
foo = *list;
*list = (*list)->next;
pkg_free( foo );
}
}
void destroy_script_cb()
{
destroy_cb_list( &pre_req_cb );
destroy_cb_list( &post_req_cb );
destroy_cb_list( &pre_rpl_cb );
destroy_cb_list( &post_req_cb );
}
static inline int exec_pre_cb( struct sip_msg *msg, struct script_cb *cb)
{
for ( ; cb ; cb=cb->next ) {
/* stop on error */
if (cb->cbf(msg, cb->param)==0)
return 0;
}
return 1;
}
static inline int exec_post_cb( struct sip_msg *msg, struct script_cb *cb)
{
for ( ; cb ; cb=cb->next){
cb->cbf( msg, cb->param);
}
return 1;
}
int exec_pre_req_cb( struct sip_msg *msg)
{
return exec_pre_cb( msg, pre_req_cb);
}
int exec_pre_rpl_cb( struct sip_msg *msg)
{
return exec_pre_cb( msg, pre_rpl_cb);
}
int exec_post_req_cb( struct sip_msg *msg)
{
return exec_post_cb( msg, post_req_cb);
}
int exec_post_rpl_cb( struct sip_msg *msg)
{
return exec_post_cb( msg, post_rpl_cb);
}
|
