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<?php |
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declare(strict_types = 1); |
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namespace Zortje\MVC\User; |
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use Zortje\MVC\Storage\Cookie\Cookie; |
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use Zortje\MVC\Storage\Cookie\Exception\CookieUndefinedIndexException; |
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/** |
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* Class UserAuthenticator |
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* |
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* @package Zortje\MVC\User |
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*/ |
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class UserAuthenticator |
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{ |
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/** |
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* @var \PDO PDO |
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*/ |
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protected $pdo; |
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/** |
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* @var int Password hashing cost |
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* |
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* @todo Get the cost from a configuration class |
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*/ |
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private $passwordHashingCost = 11; |
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/** |
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* UserAuthenticator constructor. |
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* |
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* @param \PDO $pdo |
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*/ |
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public function __construct(\PDO $pdo) |
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{ |
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$this->pdo = $pdo; |
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} |
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/** |
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* Authenticate user object from cookie |
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* |
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* @param Cookie $cookie Cookie object |
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* |
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* @return User|null User if a user ID is sent in cookie |
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*/ |
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public function userFromCookie(Cookie $cookie): User |
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{ |
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try { |
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$userId = $cookie->get('User.id'); |
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$userTable = new UserTable($this->pdo); |
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$users = $userTable->findBy('id', $userId); |
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if (count($users) === 1) { |
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return $users[0]; |
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} else { |
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return null; |
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} |
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} catch (CookieUndefinedIndexException $e) { |
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return null; |
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} |
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} |
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/** |
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* Sign in an user |
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* |
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* @param User $user User object |
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* @param string $password User password |
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* |
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* @return bool Returns true if sign in was successful, otherwise false will be returned |
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*/ |
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public function signIn(User $user, string $password): bool |
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{ |
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/** |
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* Verify password |
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*/ |
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if (password_verify($password, $user->get('password_hash')) === false) { |
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/** |
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* Return false to indicate incorrect credentials |
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*/ |
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return false; |
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} else { |
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/** |
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* Check if a new hashing algorithm is available or the cost has changed |
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* If so, create a new hash and replace the old one in the user |
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*/ |
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$options = ['cost' => $this->passwordHashingCost]; |
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if (password_needs_rehash($user->get('password_hash'), PASSWORD_DEFAULT, $options)) { |
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/** |
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* Create new password hash |
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*/ |
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$user->set('password_hash', password_hash($password, PASSWORD_DEFAULT, $options)); |
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/** |
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* Update user in database |
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*/ |
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$userTable = new UserTable($this->pdo); |
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$userTable->update($user); |
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} |
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/** |
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* Regenerate session ID to prevent session fixation attacks |
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*/ |
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session_regenerate_id(); |
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/** |
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* Set User id in session |
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*/ |
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$_SESSION['User.id'] = $user->get('id'); |
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/** |
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* Return true to indicate a successful sign in |
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*/ |
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return true; |
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} |
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} |
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} |
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This check looks for the generic type
arrayas a return type and suggests a more specific type. This type is inferred from the actual code.