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<?php
namespace Symfony\Component\Security\Encoder;
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* BasePasswordEncoder is the base class for all password encoders.
*
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
abstract class BasePasswordEncoder implements PasswordEncoderInterface
{
/**
* Demerges a merge password and salt string.
*
* @param string $mergedPasswordSalt The merged password and salt string
*
* @return array An array where the first element is the password and the second the salt
*/
protected function demergePasswordAndSalt($mergedPasswordSalt)
{
if (empty($mergedPasswordSalt)) {
return array('', '');
}
$password = $mergedPasswordSalt;
$salt = '';
$saltBegins = strrpos($mergedPasswordSalt, '{');
if (false !== $saltBegins && $saltBegins + 1 < strlen($mergedPasswordSalt)) {
$salt = substr($mergedPasswordSalt, $saltBegins + 1, strlen($mergedPasswordSalt) - 1);
$password = substr($mergedPasswordSalt, 0, $saltBegins);
}
return array($password, $salt);
}
/**
* Merges a password and a salt.
*
* @param password the password to be used (can be <code>null</code>)
* @param salt the salt to be used (can be <code>null</code>)
*
* @return a merged password and salt <code>String</code>
*/
protected function mergePasswordAndSalt($password, $salt) {
if (empty($salt)) {
return $password;
}
if (false !== strrpos($salt, '{') || false !== strrpos($salt, '}')) {
throw new \InvalidArgumentException('Cannot use { or } in salt.');
}
return $password.'{'.$salt.'}';
}
}
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