72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Environment related dialplan functions
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include "asterisk.h"
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/* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/logger.h"
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#include "asterisk/utils.h"
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#include "asterisk/app.h"
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static char *builtin_function_env_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *ret = "";
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if (data) {
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ret = getenv(data);
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if (!ret)
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ret = "";
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}
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ast_copy_string(buf, ret, len);
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return buf;
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}
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static void builtin_function_env_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
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{
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if (!ast_strlen_zero(data)) {
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if (!ast_strlen_zero(value)) {
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setenv(data, value, 1);
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} else {
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unsetenv(data);
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}
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}
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function env_function = {
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.name = "ENV",
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.synopsis = "Gets or sets the environment variable specified",
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.syntax = "ENV(<envname>)",
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.read = builtin_function_env_read,
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.write = builtin_function_env_write,
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};
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