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