func_md5.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2005-2006, Digium, Inc.
 * Copyright (C) 2005, Olle E. Johansson, Edvina.net
 * Copyright (C) 2005, Russell Bryant <russelb@clemson.edu>
 *
 * 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 MD5 digest related dialplan functions
 *
 * \author Olle E. Johansson <oej@edvina.net>
 * \author Russell Bryant <russelb@clemson.edu>
 *
 * \ingroup functions
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/module.h"
#include "asterisk/pbx.h"
 
/*** DOCUMENTATION
    <function name="MD5" language="en_US">
        <synopsis>
            Computes an MD5 digest.
        </synopsis>
        <syntax>
            <parameter name="data" required="true" />
        </syntax>
        <description>
            <para>Computes an MD5 digest.</para>
        </description>
    </function>
 ***/
 
static int md5(struct ast_channel *chan, const char *cmd, char *data,
           char *buf, size_t len)
{
    if (ast_strlen_zero(data)) {
        ast_log(LOG_WARNING, "Syntax: MD5(<data>) - missing argument!\n");
        return -1;
    }
 
    ast_md5_hash(buf, data);
    buf[32] = '\0';
 
    return 0;
}
 
static struct ast_custom_function md5_function = {
    .name = "MD5",
    .read = md5,
    .read_max = 33,
};
 
static int unload_module(void)
{
    return ast_custom_function_unregister(&md5_function);
}
 
static int load_module(void)
{
    return ast_custom_function_register(&md5_function);
}
 
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "MD5 digest dialplan functions");