149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<support_level>core</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/channel.h"
|
|
#include "asterisk/pbx.h"
|
|
#include "asterisk/utils.h"
|
|
#include "asterisk/devicestate.h"
|
|
|
|
/*** DOCUMENTATION
|
|
<function name="EXTENSION_STATE" language="en_US">
|
|
<synopsis>
|
|
Get an extension's state.
|
|
</synopsis>
|
|
<syntax argsep="@">
|
|
<parameter name="extension" required="true" />
|
|
<parameter name="context">
|
|
<para>If it is not specified defaults to <literal>default</literal>.</para>
|
|
</parameter>
|
|
</syntax>
|
|
<description>
|
|
<para>The EXTENSION_STATE function can be used to retrieve the state from any
|
|
hinted extension. For example:</para>
|
|
<para>NoOp(1234@default has state ${EXTENSION_STATE(1234)})</para>
|
|
<para>NoOp(4567@home has state ${EXTENSION_STATE(4567@home)})</para>
|
|
<para>The possible values returned by this function are:</para>
|
|
<para>UNKNOWN | NOT_INUSE | INUSE | BUSY | INVALID | UNAVAILABLE | RINGING |
|
|
RINGINUSE | HOLDINUSE | ONHOLD</para>
|
|
</description>
|
|
</function>
|
|
***/
|
|
|
|
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",
|
|
.read = extstate_read,
|
|
.read_max = 12,
|
|
};
|
|
|
|
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");
|