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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, 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 Environment related dialplan functions
*
*/
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "asterisk.h"
/* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
static char *builtin_function_env_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
char *ret = "";
if (data) {
ret = getenv(data);
if (!ret)
ret = "";
}
ast_copy_string(buf, ret, len);
return buf;
}
static void builtin_function_env_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
{
if (!ast_strlen_zero(data)) {
if (!ast_strlen_zero(value)) {
setenv(data, value, 1);
} else {
unsetenv(data);
}
}
}
#ifndef BUILTIN_FUNC
static
#endif
struct ast_custom_function env_function = {
.name = "ENV",
.synopsis = "Gets or sets the environment variable specified",
.syntax = "ENV(<envname>)",
.read = builtin_function_env_read,
.write = builtin_function_env_write,
};
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