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 <sergey_basmanov@mail.ru>
 *
 * \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">
        <since>
            <version>1.4.0</version>
        </since>
        <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");