app_channelredirect.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2006, Sergey Basmanov
 *
 * 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 ChannelRedirect application
 *
 * \author Sergey Basmanov <[email protected]>
 *
 * \ingroup applications
 */

/*** MODULEINFO
 <support_level>core</support_level>
 ***/

#include "asterisk.h"

#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/features.h"

/*** DOCUMENTATION
 <application name="ChannelRedirect" language="en_US">
 <synopsis>
 Redirects given channel to a dialplan target
 </synopsis>
 <syntax>
 <parameter name="channel" required="true" />
 <parameter name="context" required="false" />
 <parameter name="extension" required="false" />
 <parameter name="priority" required="true" />
 </syntax>
 <description>
 <para>Sends the specified channel to the specified extension priority</para>

 <para>This application sets the following channel variables upon completion</para>
 <variablelist>
 <variable name="CHANNELREDIRECT_STATUS">
 <value name="NOCHANNEL" />
 <value name="SUCCESS" />
 <para>Are set to the result of the redirection</para>
 </variable>
 </variablelist>
 </description>
 </application>
 ***/
static const char app[] = "ChannelRedirect";

static int asyncgoto_exec(struct ast_channel *chan, const char *data)
{
 int res = -1;
 char *info;
 struct ast_channel *chan2 = NULL;

 AST_DECLARE_APP_ARGS(args,
 AST_APP_ARG(channel);
 AST_APP_ARG(label);
 );

 if (ast_strlen_zero(data)) {
 ast_log(LOG_WARNING, "%s requires an argument (channel,[[context,]exten,]priority)\n", app);
 return -1;
 }

 info = ast_strdupa(data);
 AST_STANDARD_APP_ARGS(args, info);

 if (ast_strlen_zero(args.channel) || ast_strlen_zero(args.label)) {
 ast_log(LOG_WARNING, "%s requires an argument (channel,[[context,]exten,]priority)\n", app);
 return -1;
 }

 if (!(chan2 = ast_channel_get_by_name(args.channel))) {
 ast_log(LOG_WARNING, "No such channel: %s\n", args.channel);
 pbx_builtin_setvar_helper(chan, "CHANNELREDIRECT_STATUS", "NOCHANNEL");
 return 0;
 }

 res = ast_async_parseable_goto(chan2, args.label);

 chan2 = ast_channel_unref(chan2);

 pbx_builtin_setvar_helper(chan, "CHANNELREDIRECT_STATUS", "SUCCESS");

 return res;
}

static int unload_module(void)
{
 return ast_unregister_application(app);
}

static int load_module(void)
{
 return ast_register_application_xml(app, asyncgoto_exec) ?
 AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Redirects a given channel to a dialplan target");