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<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
* Licensed under the Open Software License version 3.0
*
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
* http://opensource.org/licenses/OSL-3.0
* If you did not receive a copy of the license and are unable to obtain it
* through the world wide web, please send an email to
* licensing@ellislab.com so we can send you a copy immediately.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 3.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* PHP ext/standard/password compatibility package
*
* @package CodeIgniter
* @subpackage CodeIgniter
* @category Compatibility
* @author Andrey Andreev
* @link http://codeigniter.com/user_guide/
* @link http://php.net/password
*/
// ------------------------------------------------------------------------
if (is_php('5.5') OR ! is_php('5.3.7') OR ! defined('CRYPT_BLOWFISH') OR CRYPT_BLOWFISH !== 1 OR defined('HHVM_VERSION'))
{
return;
}
// ------------------------------------------------------------------------
defined('PASSWORD_BCRYPT') OR define('PASSWORD_BCRYPT', 1);
defined('PASSWORD_DEFAULT') OR define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
// ------------------------------------------------------------------------
if ( ! function_exists('password_get_info'))
{
/**
* password_get_info()
*
* @link http://php.net/password_get_info
* @param string $hash
* @return array
*/
function password_get_info($hash)
{
return (strlen($hash) < 60 OR sscanf($hash, '$2y$%d', $hash) !== 1)
? array('algo' => 0, 'algoName' => 'unknown', 'options' => array())
: array('algo' => 1, 'algoName' => 'bcrypt', 'options' => array('cost' => $hash));
}
}
// ------------------------------------------------------------------------
if ( ! function_exists('password_hash'))
{
/**
* password_hash()
*
* @link http://php.net/password_hash
* @param string $password
* @param int $algo
* @param array $options
* @return mixed
*/
function password_hash($password, $algo, array $options = array())
{
static $func_override;
isset($func_override) OR $func_override = (extension_loaded('mbstring') && ini_get('mbstring.func_override'));
if ($algo !== 1)
{
trigger_error('password_hash(): Unknown hashing algorithm: '.(int) $algo, E_USER_WARNING);
return NULL;
}
if (isset($options['cost']) && ($options['cost'] < 4 OR $options['cost'] > 31))
{
trigger_error('password_hash(): Invalid bcrypt cost parameter specified: '.(int) $options['cost'], E_USER_WARNING);
return NULL;
}
if (isset($options['salt']) && ($saltlen = ($func_override ? mb_strlen($options['salt'], '8bit') : strlen($options['salt']))) < 22)
{
trigger_error('password_hash(): Provided salt is too short: '.$saltlen.' expecting 22', E_USER_WARNING);
return NULL;
}
elseif ( ! isset($options['salt']))
{
if (defined('MCRYPT_DEV_URANDOM'))
{
$options['salt'] = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM);
}
elseif (function_exists('openssl_random_pseudo_bytes'))
{
$options['salt'] = openssl_random_pseudo_bytes(16);
}
elseif (DIRECTORY_SEPARATOR === '/' && (is_readable($dev = '/dev/arandom') OR is_readable($dev = '/dev/urandom')))
{
if (($fp = fopen($dev, 'rb')) === FALSE)
{
log_message('error', 'compat/password: Unable to open '.$dev.' for reading.');
return FALSE;
}
// Try not to waste entropy ...
is_php('5.4') && stream_set_chunk_size($fp, 16);
$options['salt'] = '';
for ($read = 0; $read < 16; $read = ($func_override) ? mb_strlen($options['salt'], '8bit') : strlen($options['salt']))
{
if (($read = fread($fp, 16 - $read)) === FALSE)
{
log_message('error', 'compat/password: Error while reading from '.$dev.'.');
return FALSE;
}
$options['salt'] .= $read;
}
fclose($fp);
}
else
{
log_message('error', 'compat/password: No CSPRNG available.');
return FALSE;
}
$options['salt'] = str_replace('+', '.', rtrim(base64_encode($options['salt']), '='));
}
elseif ( ! preg_match('#^[a-zA-Z0-9./]+$#D', $options['salt']))
{
$options['salt'] = str_replace('+', '.', rtrim(base64_encode($options['salt']), '='));
}
isset($options['cost']) OR $options['cost'] = 10;
return (strlen($password = crypt($password, sprintf('$2y$%02d$%s', $options['cost'], $options['salt']))) === 60)
? $password
: FALSE;
}
}
// ------------------------------------------------------------------------
if ( ! function_exists('password_needs_rehash'))
{
/**
* password_needs_rehash()
*
* @link http://php.net/password_needs_rehash
* @param string $hash
* @param int $algo
* @param array $options
* @return bool
*/
function password_needs_rehash($hash, $algo, array $options = array())
{
$info = password_get_info($hash);
if ($algo !== $info['algo'])
{
return TRUE;
}
elseif ($algo === 1)
{
$options['cost'] = isset($options['cost']) ? (int) $options['cost'] : 10;
return ($info['options']['cost'] !== $options['cost']);
}
// Odd at first glance, but according to a comment in PHP's own unit tests,
// because it is an unknown algorithm - it's valid and therefore doesn't
// need rehashing.
return FALSE;
}
}
// ------------------------------------------------------------------------
if ( ! function_exists('password_verify'))
{
/**
* password_verify()
*
* @link http://php.net/password_verify
* @param string $password
* @param string $hash
* @return bool
*/
function password_verify($password, $hash)
{
if (strlen($hash) !== 60 OR strlen($password = crypt($password, $hash)) !== 60)
{
return FALSE;
}
$compare = 0;
for ($i = 0; $i < 60; $i++)
{
$compare |= (ord($password[$i]) ^ ord($hash[$i]));
}
return ($compare === 0);
}
}
/* End of file password.php */
/* Location: ./system/core/compat/password.php */
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