Newer
Older
Russell Bryant
committed
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
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2007, Digium, Inc.
*
* Modified from func_devstate.c by Russell Bryant <russell@digium.com>
* Adam Gundy <adam@starsilk.net>
* 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 Get the state of a hinted extension for dialplan control
*
* \author Adam Gundy <adam@starsilk.net>
*
* \ingroup functions
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/devicestate.h"
static const char *ast_extstate_str(int state)
{
const char *res = "UNKNOWN";
switch (state) {
case AST_EXTENSION_NOT_INUSE:
res = "NOT_INUSE";
break;
case AST_EXTENSION_INUSE:
res = "INUSE";
break;
case AST_EXTENSION_BUSY:
res = "BUSY";
break;
case AST_EXTENSION_UNAVAILABLE:
res = "UNAVAILABLE";
break;
case AST_EXTENSION_RINGING:
res = "RINGING";
break;
case AST_EXTENSION_INUSE | AST_EXTENSION_RINGING:
res = "RINGINUSE";
break;
case AST_EXTENSION_INUSE | AST_EXTENSION_ONHOLD:
res = "HOLDINUSE";
break;
case AST_EXTENSION_ONHOLD:
res = "ONHOLD";
break;
}
return res;
}
static int extstate_read(struct ast_channel *chan, const char *cmd, char *data,
char *buf, size_t len)
{
char *exten, *context;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "EXTENSION_STATE requires an extension\n");
return -1;
}
context = exten = data;
strsep(&context, "@");
if (ast_strlen_zero(context))
context = "default";
if (ast_strlen_zero(exten)) {
ast_log(LOG_WARNING, "EXTENSION_STATE requires an extension\n");
return -1;
}
ast_copy_string(buf,
ast_extstate_str(ast_extension_state(chan, context, exten)), len);
return 0;
}
static struct ast_custom_function extstate_function = {
.name = "EXTENSION_STATE",
.synopsis = "Get an extension's state",
.syntax = "EXTENSION_STATE(extension[@context])",
.desc =
" The EXTENSION_STATE function can be used to retrieve the state from any\n"
"hinted extension. For example:\n"
" NoOp(1234@default has state ${EXTENSION_STATE(1234)})\n"
" NoOp(4567@home has state ${EXTENSION_STATE(4567@home)})\n"
"\n"
" The possible values returned by this function are:\n"
"UNKNOWN | NOT_INUSE | INUSE | BUSY | INVALID | UNAVAILABLE | RINGING\n"
"RINGINUSE | HOLDINUSE | ONHOLD\n",
.read = extstate_read,
};
static int unload_module(void)
{
int res;
res = ast_custom_function_unregister(&extstate_function);
return res;
}
static int load_module(void)
{
int res;
res = ast_custom_function_register(&extstate_function);
return res ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Gets an extension's state in the dialplan");