app_celgenuserevent.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2008, Digium, Inc
 *
 * 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 Generate User-Defined CEL event
 *
 * \author Steve Murphy
 *
 * \ingroup applications
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/module.h"
#include "asterisk/app.h"
#include "asterisk/channel.h"
#include "asterisk/cel.h"
 
/*** DOCUMENTATION
    <application name="CELGenUserEvent" language="en_US">
        <synopsis>
            Generates a CEL User Defined Event.
        </synopsis>
        <syntax>
            <parameter name="event-name" required="true">
                <argument name="event-name" required="true">
                </argument>
                <argument name="extra" required="false">
                    <para>Extra text to be included with the event.</para>
                </argument>
            </parameter>
        </syntax>
        <description>
            <para>A CEL event will be immediately generated by this channel, with the supplied name for a type.</para>
        </description>
    </application>
 ***/
 
static char *app = "CELGenUserEvent";
 
static int celgenuserevent_exec(struct ast_channel *chan, const char *data)
{
    int res = 0;
    char *parse;
    RAII_VAR(struct ast_json *, blob, NULL, ast_json_unref);
    AST_DECLARE_APP_ARGS(args,
        AST_APP_ARG(event);
        AST_APP_ARG(extra);
    );
 
    if (ast_strlen_zero(data)) {
        return 0;
    }
 
    parse = ast_strdupa(data);
    AST_STANDARD_APP_ARGS(args, parse);
 
    blob = ast_json_pack("{s: s, s: {s: s}}",
        "event", args.event,
        "extra", "extra", S_OR(args.extra, ""));
    if (!blob) {
        return res;
    }
    ast_cel_publish_event(chan, AST_CEL_USER_DEFINED, blob);
    return res;
}
 
static int unload_module(void)
{
    ast_unregister_application(app);
    return 0;
}
 
static int load_module(void)
{
    int res = ast_register_application_xml(app, celgenuserevent_exec);
    if (res) {
        return AST_MODULE_LOAD_DECLINE;
    } else {
        return AST_MODULE_LOAD_SUCCESS;
    }
}
 
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Generate an User-Defined CEL event",
    .support_level = AST_MODULE_SUPPORT_CORE,
    .load = load_module,
    .unload = unload_module,
    .requires = "cel",
);