func_md5.c

Go to the documentation of this file.

/*
 * 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 <[email protected]>
 *
 * 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 <[email protected]>
 * \author Russell Bryant <[email protected]>
 *
 * \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");