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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\Acl\Domain;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Acl\Model\SecurityIdentityInterface;
/**
* A SecurityIdentity implementation used for actual users
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
final class UserSecurityIdentity implements SecurityIdentityInterface
{
private $username;
private $class;
/**
* Constructor
*
* @param string $username the username representation
* @param string $class the user's fully qualified class name
*/
public function __construct($username, $class)
{
if (empty($username)) {
throw new \InvalidArgumentException('$username must not be empty.');
}
if (empty($class)) {
throw new \InvalidArgumentException('$class must not be empty.');
}
$this->username = (string) $username;
$this->class = $class;
}
/**
* Creates a user security identity from a UserInterface
*
* @param UserInterface $user
* @return UserSecurityIdentity
*/
static public function fromAccount(UserInterface $user)
{
return new self($user->getUsername(), get_class($user));
}
/**
* Creates a user security identity from a TokenInterface
*
* @param TokenInterface $token
* @return UserSecurityIdentity
*/
static public function fromToken(TokenInterface $token)
{
$user = $token->getUser();
if ($user instanceof UserInterface) {
return self::fromAccount($user);
}
return new self((string) $user, is_object($user)? get_class($user) : get_class($token));
}
/**
* Returns the username
*
* @return string
*/
public function getUsername()
{
return $this->username;
}
/**
* Returns the user's class name
*
* @return string
*/
public function getClass()
{
return $this->class;
}
/**
* {@inheritDoc}
*/
public function equals(SecurityIdentityInterface $sid)
{
if (!$sid instanceof UserSecurityIdentity) {
return false;
}
return $this->username === $sid->getUsername()
&& $this->class === $sid->getClass();
}
/**
* A textual representation of this security identity.
*
* This is not used for equality comparison, but only for debugging.
*
* @return string
*/
public function __toString()
{
return sprintf('UserSecurityIdentity(%s, %s)', $this->username, $this->class);
}
}
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