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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Security\Core\Encoder;
/**
* A generic encoder factory implementation.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class EncoderFactory implements EncoderFactoryInterface
{
private $encoders;
public function __construct(array $encoders)
{
$this->encoders = $encoders;
}
/**
* {@inheritdoc}
*/
public function getEncoder($user)
{
$encoderKey = null;
if ($user instanceof EncoderAwareInterface && (null !== $encoderName = $user->getEncoderName())) {
if (!\array_key_exists($encoderName, $this->encoders)) {
throw new \RuntimeException(sprintf('The encoder "%s" was not configured.', $encoderName));
}
$encoderKey = $encoderName;
} else {
foreach ($this->encoders as $class => $encoder) {
if ((\is_object($user) && $user instanceof $class) || (!\is_object($user) && (is_subclass_of($user, $class) || $user == $class))) {
$encoderKey = $class;
break;
}
}
}
if (null === $encoderKey) {
throw new \RuntimeException(sprintf('No encoder has been configured for account "%s".', \is_object($user) ? \get_class($user) : $user));
}
if (!$this->encoders[$encoderKey] instanceof PasswordEncoderInterface) {
$this->encoders[$encoderKey] = $this->createEncoder($this->encoders[$encoderKey]);
}
return $this->encoders[$encoderKey];
}
/**
* Creates the actual encoder instance.
*
* @return PasswordEncoderInterface
*
* @throws \InvalidArgumentException
*/
private function createEncoder(array $config)
{
if (isset($config['algorithm'])) {
$config = $this->getEncoderConfigFromAlgorithm($config);
}
if (!isset($config['class'])) {
throw new \InvalidArgumentException(sprintf('"class" must be set in %s.', json_encode($config)));
}
if (!isset($config['arguments'])) {
throw new \InvalidArgumentException(sprintf('"arguments" must be set in %s.', json_encode($config)));
}
$reflection = new \ReflectionClass($config['class']);
return $reflection->newInstanceArgs($config['arguments']);
}
private function getEncoderConfigFromAlgorithm($config)
{
if ('auto' === $config['algorithm']) {
$config['algorithm'] = SodiumPasswordEncoder::isSupported() ? 'sodium' : 'native';
}
switch ($config['algorithm']) {
case 'plaintext':
return [
'class' => PlaintextPasswordEncoder::class,
'arguments' => [$config['ignore_case']],
];
case 'pbkdf2':
return [
'class' => Pbkdf2PasswordEncoder::class,
'arguments' => [
$config['hash_algorithm'],
$config['encode_as_base64'],
$config['iterations'],
$config['key_length'],
],
];
/* @deprecated since Symfony 4.3 */
case 'bcrypt':
return [
'class' => BCryptPasswordEncoder::class,
'arguments' => [$config['cost']],
];
case 'native':
return [
'class' => NativePasswordEncoder::class,
'arguments' => [
$config['time_cost'] ?? null,
(($config['memory_cost'] ?? 0) << 10) ?: null,
$config['cost'] ?? null,
],
];
case 'sodium':
return [
'class' => SodiumPasswordEncoder::class,
'arguments' => [
$config['time_cost'] ?? null,
(($config['memory_cost'] ?? 0) << 10) ?: null,
],
];
/* @deprecated since Symfony 4.3 */
case 'argon2i':
return [
'class' => Argon2iPasswordEncoder::class,
'arguments' => [
$config['memory_cost'],
$config['time_cost'],
$config['threads'],
],
];
}
return [
'class' => MessageDigestPasswordEncoder::class,
'arguments' => [
$config['algorithm'],
$config['encode_as_base64'],
$config['iterations'],
],
];
}
}
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