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
|
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2005, Joshua Colp
*
* Joshua Colp <jcolp@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Directed Call Pickup Support
*
* \ingroup applications
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision: 17905 $")
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
static const char *tdesc = "Directed Call Pickup Application";
static const char *app = "Pickup";
static const char *synopsis = "Directed Call Pickup";
static const char *descrip =
" Pickup(extension[@context]): This application can pickup any ringing channel\n"
"that is calling the specified extension. If no context is specified, the current\n"
"context will be used.\n";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int pickup_exec(struct ast_channel *chan, void *data)
{
int res = 0;
struct localuser *u = NULL;
struct ast_channel *origin = NULL, *target = NULL;
char *tmp = NULL, *exten = NULL, *context = NULL;
char workspace[256] = "";
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Pickup requires an argument (extension) !\n");
return -1;
}
LOCAL_USER_ADD(u);
/* Get the extension and context if present */
exten = data;
context = strchr(data, '@');
if (context) {
*context = '\0';
context++;
}
/* Find a channel to pickup */
origin = ast_get_channel_by_exten_locked(exten, context);
if (origin && origin->cdr) {
ast_cdr_getvar(origin->cdr, "dstchannel", &tmp, workspace,
sizeof(workspace), 0);
if (tmp) {
/* We have a possible channel... now we need to find it! */
target = ast_get_channel_by_name_locked(tmp);
} else {
ast_log(LOG_DEBUG, "No target channel found.\n");
res = -1;
}
ast_mutex_unlock(&origin->lock);
} else {
if (origin)
ast_mutex_unlock(&origin->lock);
ast_log(LOG_DEBUG, "No originating channel found.\n");
}
if (res)
goto out;
if (target && (!target->pbx) && ((target->_state == AST_STATE_RINGING) || (target->_state == AST_STATE_RING))) {
ast_log(LOG_DEBUG, "Call pickup on chan '%s' by '%s'\n", target->name,
chan->name);
res = ast_answer(chan);
if (res) {
ast_log(LOG_WARNING, "Unable to answer '%s'\n", chan->name);
res = -1;
goto out;
}
res = ast_queue_control(chan, AST_CONTROL_ANSWER);
if (res) {
ast_log(LOG_WARNING, "Unable to queue answer on '%s'\n",
chan->name);
res = -1;
goto out;
}
res = ast_channel_masquerade(target, chan);
if (res) {
ast_log(LOG_WARNING, "Unable to masquerade '%s' into '%s'\n", chan->name, target->name);
res = -1;
goto out;
}
} else {
ast_log(LOG_DEBUG, "No call pickup possible...\n");
res = -1;
}
/* Done */
out:
if (target)
ast_mutex_unlock(&target->lock);
LOCAL_USER_REMOVE(u);
return res;
}
int unload_module(void)
{
int res;
res = ast_unregister_application(app);
STANDARD_HANGUP_LOCALUSERS;
return res;
}
int load_module(void)
{
return ast_register_application(app, pickup_exec, synopsis, descrip);
}
char *description(void)
{
return (char *) tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
|
