115 lines
3.8 KiB
PHP
115 lines
3.8 KiB
PHP
<?php
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// $Header: /cvsroot/phpldapadmin/phpldapadmin/emuhash_functions.php,v 1.6 2005/03/25 00:59:48 wurley Exp $
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/**
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* @package other
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*/
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/*******************************************************************************
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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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if( ! isset( $emuhash_openssl ) )
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$emuhash_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_openssl ) )
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unset( $emuhash_openssl );
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elseif ( function_exists( 'is_executable' ) && ! is_executable( $emuhash_openssl ) )
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unset( $emuhash_openssl );
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else {
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if( ! isset( $emuhash_temp_dir ) )
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$emuhash_temp_dir = '/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_openssl, $emuhash_temp_dir;
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$current_magic_quotes = get_magic_quotes_runtime();
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set_magic_quotes_runtime( 0 );
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$tmpfile = tempnam( $emuhash_temp_dir, "emuhash" );
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$pwhandle = fopen( $tmpfile, "w" );
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if( ! $pwhandle )
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pla_error( "Unable to create a temporary file '$tmpfile' to create hashed password" );
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fwrite( $pwhandle, $password_clear );
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fclose( $pwhandle );
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$cmd = $emuhash_openssl . ' ' . $openssl_hash_id . ' -binary < ' . $tmpfile;
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$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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set_magic_quotes_runtime( $current_magic_quotes );
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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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?>
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