<?php
/*******************************************************************************
* @package default
* emuhash - partly emulates the php mhash functions
* version: 2004040701
*
* (c) 2004 - Simon Matter <simon.matter@invoca.ch>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
******************************************************************************/
/******************************************************************************/
/* Do we have builtin mhash support in this PHP version ? */
/******************************************************************************/
if (! function_exists('mhash') && ! function_exists('mhash_keygen_s2k')) {
$emuhash_emu = array();
if (! isset($emuhash_emu['openssl']))
$emuhash_emu['openssl'] = '/usr/bin/openssl';
# Don't create mhash functions if we don't have a working openssl
if (! file_exists($emuhash_emu['openssl']))
unset($emuhash_emu['openssl']);
elseif (function_exists('is_executable') && ! is_executable($emuhash_emu['openssl']))
unset($emuhash_emu['openssl']);
else {
if (! isset($emuhash_emu['tmpdir']))
$emuhash_emu['tmpdir'] = '/tmp';
/******************************************************************************/
/* Define constants used in the mhash emulation code. */
/******************************************************************************/
define('MHASH_MD5','md5');
define('MHASH_SHA1','sha1');
define('MHASH_RIPEMD160','rmd160');
/******************************************************************************/
/* Functions to emulate parts of php-mash. */
/******************************************************************************/
function openssl_hash($openssl_hash_id,$password_clear) {
global $emuhash_emu;
if (PHP_VERSION < 6) {
$current_magic_quotes = @get_magic_quotes_runtime();
@set_magic_quotes_runtime(0);
}
$tmpfile = tempnam($emuhash_emu['tmpdir'],'emuhash');
$pwhandle = fopen($tmpfile,'w');
if (! $pwhandle)
error(sprintf('Unable to create a temporary file %s to create hashed password',$tmpfile) ,'error','index.php');
fwrite($pwhandle,$password_clear);
fclose($pwhandle);
$cmd = sprintf('%s %s -binary <%s',$emuhash_emu['openssl'],$openssl_hash_id,$tmpfile);
$prog = popen($cmd,'r');
$pass = fread($prog,1024);
pclose($prog);
unlink($tmpfile);
if (PHP_VERSION < 6)
@set_magic_quotes_runtime($current_magic_quotes);
return $pass;
}
function mhash($hash_id,$password_clear) {
switch($hash_id) {
case MHASH_MD5:
$emuhash = openssl_hash(MHASH_MD5,$password_clear);
break;
case MHASH_SHA1:
$emuhash = openssl_hash(MHASH_SHA1,$password_clear);
break;
case MHASH_RIPEMD160:
$emuhash = openssl_hash(MHASH_RIPEMD160,$password_clear);
break;
default:
$emuhash = FALSE;
}
return $emuhash;
}
function mhash_keygen_s2k($hash_id,$password_clear,$salt,$bytes) {
return substr(pack('H*',bin2hex(mhash($hash_id,($salt.$password_clear)))),0,$bytes);
}
}
}
?>
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