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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2006, 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 Simple module check function
* \author Olle E. Johansson, Edvina.net
*
* \ingroup functions
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/pbx.h"
/*** DOCUMENTATION
<function name="IFMODULE" language="en_US">
<synopsis>
Checks if an Asterisk module is loaded in memory.
</synopsis>
<syntax>
<parameter name="modulename.so" required="true">
<para>Module name complete with <literal>.so</literal></para>
</parameter>
</syntax>
<description>
<para>Checks if a module is loaded. Use the full module name
as shown by the list in <literal>module list</literal>.
Returns <literal>1</literal> if module exists in memory, otherwise <literal>0</literal></para>
</description>
</function>
***/
static int ifmodule_read(struct ast_channel *chan, const char *cmd, char *data,
char *buf, size_t len)
{
char *ret = "0";
*buf = '\0';
if (data)
if (ast_module_check(data))
ret = "1";
ast_copy_string(buf, ret, len);
return 0;
}
static struct ast_custom_function ifmodule_function = {
.name = "IFMODULE",
.read = ifmodule_read,
.read_max = 2,
};
static int unload_module(void)
{
return ast_custom_function_unregister(&ifmodule_function);
}
static int load_module(void)
{
return ast_custom_function_register(&ifmodule_function);
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Checks if Asterisk module is loaded in memory");
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