asterisk/funcs/func_global.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2006, Tilghman Lesher
*
* Tilghman Lesher <func_global__200605@the-tilghman.com>
*
* 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 Global variable dialplan functions
*
* \author Tilghman Lesher <func_global__200605@the-tilghman.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
static int global_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
const char *var = pbx_builtin_getvar_helper(NULL, data);
*buf = '\0';
if (var)
ast_copy_string(buf, var, len);
return 0;
}
static int global_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
{
pbx_builtin_setvar_helper(NULL, data, value);
return 0;
}
static struct ast_custom_function global_function = {
.name = "GLOBAL",
.synopsis = "Gets or sets the global variable specified",
.syntax = "GLOBAL(<varname>)",
.read = global_read,
.write = global_write,
};
static char *tdesc = "Global variable dialplan functions";
static int unload_module(void *mod)
{
int res = 0;
res |= ast_custom_function_unregister(&global_function);
return res;
}
static int load_module(void *mod)
{
int res = 0;
res |= ast_custom_function_register(&global_function);
return res;
}
static const char *description(void)
{
return tdesc;
}
static const char *key(void)
{
return ASTERISK_GPL_KEY;
}
STD_MOD(MOD_1 | NO_USECOUNT, NULL, NULL, NULL);