Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\user;
Chris@0: 
Chris@0: use Drupal\Core\Entity\EntityManagerInterface;
Chris@0: use Drupal\Core\Password\PasswordInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Validates user authentication credentials.
Chris@0:  */
Chris@0: class UserAuth implements UserAuthInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The entity manager.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Entity\EntityManagerInterface
Chris@0:    */
Chris@0:   protected $entityManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * The password hashing service.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Password\PasswordInterface
Chris@0:    */
Chris@0:   protected $passwordChecker;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a UserAuth object.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
Chris@0:    *   The entity manager.
Chris@0:    * @param \Drupal\Core\Password\PasswordInterface $password_checker
Chris@0:    *   The password service.
Chris@0:    */
Chris@0:   public function __construct(EntityManagerInterface $entity_manager, PasswordInterface $password_checker) {
Chris@0:     $this->entityManager = $entity_manager;
Chris@0:     $this->passwordChecker = $password_checker;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function authenticate($username, $password) {
Chris@0:     $uid = FALSE;
Chris@0: 
Chris@0:     if (!empty($username) && strlen($password) > 0) {
Chris@0:       $account_search = $this->entityManager->getStorage('user')->loadByProperties(['name' => $username]);
Chris@0: 
Chris@0:       if ($account = reset($account_search)) {
Chris@0:         if ($this->passwordChecker->check($password, $account->getPassword())) {
Chris@0:           // Successful authentication.
Chris@0:           $uid = $account->id();
Chris@0: 
Chris@0:           // Update user to new password scheme if needed.
Chris@0:           if ($this->passwordChecker->needsRehash($account->getPassword())) {
Chris@0:             $account->setPassword($password);
Chris@0:             $account->save();
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     return $uid;
Chris@0:   }
Chris@0: 
Chris@0: }