/**
* Checks if user was not authenticated, or if too many logins were attempted.
*
* This validation function should always be the last one.
*/
public function validateFinal(array &$form, FormStateInterface $form_state)
{
$flood_config = $this->config('user.flood');
if (!$form_state->get('uid')) {
// Always register an IP-based failed login event.
$this->flood->register('user.failed_login_ip', $flood_config->get('ip_window'));
// Register a per-user failed login event.
if ($flood_control_user_identifier = $form_state->get('flood_control_user_identifier')) {
$this->flood->register('user.failed_login_user', $flood_config->get('user_window'), $flood_control_user_identifier);
}
if ($flood_control_triggered = $form_state->get('flood_control_triggered')) {
if ($flood_control_triggered == 'user') {
$form_state->setErrorByName('name', format_plural($flood_config->get('user_limit'), 'Sorry, there has been more than one failed login attempt for this account. It is temporarily blocked. Try again later or <a href="@url">request a new password</a>.', 'Sorry, there have been more than @count failed login attempts for this account. It is temporarily blocked. Try again later or <a href="@url">request a new password</a>.', array('@url' => $this->url('user.pass'))));
} else {
// We did not find a uid, so the limit is IP-based.
$form_state->setErrorByName('name', $this->t('Sorry, too many failed login attempts from your IP address. This IP address is temporarily blocked. Try again later or <a href="@url">request a new password</a>.', array('@url' => $this->url('user.pass'))));
}
} else {
$form_state->setErrorByName('name', $this->t('Sorry, unrecognized username or password. <a href="@password">Have you forgotten your password?</a>', array('@password' => $this->url('user.pass', [], array('query' => array('name' => $form_state->getValue('name')))))));
$accounts = $this->userStorage->loadByProperties(array('name' => $form_state->getValue('name')));
if (!empty($accounts)) {
$this->logger('user')->notice('Login attempt failed for %user.', array('%user' => $form_state->getValue('name')));
} else {
// If the username entered is not a valid user,
// only store the IP address.
$this->logger('user')->notice('Login attempt failed from %ip.', array('%ip' => $this->getRequest()->getClientIp()));
}
}
} elseif ($flood_control_user_identifier = $form_state->get('flood_control_user_identifier')) {
// Clear past failures for this user so as not to block a user who might
// log in and out more than once in an hour.
$this->flood->clear('user.failed_login_user', $flood_control_user_identifier);
}
}
/**
* Logs in a user.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The request.
*
* @return \Symfony\Component\HttpFoundation\Response
* A response which contains the ID and CSRF token.
*/
public function login(Request $request)
{
$format = $this->getRequestFormat($request);
$content = $request->getContent();
$credentials = $this->serializer->decode($content, $format);
if (!isset($credentials['name']) && !isset($credentials['pass'])) {
throw new BadRequestHttpException('Missing credentials.');
}
if (!isset($credentials['name'])) {
throw new BadRequestHttpException('Missing credentials.name.');
}
if (!isset($credentials['pass'])) {
throw new BadRequestHttpException('Missing credentials.pass.');
}
$this->floodControl($request, $credentials['name']);
if ($this->userIsBlocked($credentials['name'])) {
throw new BadRequestHttpException('The user has not been activated or is blocked.');
}
if ($uid = $this->userAuth->authenticate($credentials['name'], $credentials['pass'])) {
$this->flood->clear('user.http_login', $this->getLoginFloodIdentifier($request, $credentials['name']));
/** @var \Drupal\user\UserInterface $user */
$user = $this->userStorage->load($uid);
$this->userLoginFinalize($user);
// Send basic metadata about the logged in user.
$response_data = [];
if ($user->get('uid')->access('view', $user)) {
$response_data['current_user']['uid'] = $user->id();
}
if ($user->get('roles')->access('view', $user)) {
$response_data['current_user']['roles'] = $user->getRoles();
}
if ($user->get('name')->access('view', $user)) {
$response_data['current_user']['name'] = $user->getAccountName();
}
$response_data['csrf_token'] = $this->csrfToken->get('rest');
$logout_route = $this->routeProvider->getRouteByName('user.logout.http');
// Trim '/' off path to match \Drupal\Core\Access\CsrfAccessCheck.
$logout_path = ltrim($logout_route->getPath(), '/');
$response_data['logout_token'] = $this->csrfToken->get($logout_path);
$encoded_response_data = $this->serializer->encode($response_data, $format);
return new Response($encoded_response_data);
}
$flood_config = $this->config('user.flood');
if ($identifier = $this->getLoginFloodIdentifier($request, $credentials['name'])) {
$this->flood->register('user.http_login', $flood_config->get('user_window'), $identifier);
}
// Always register an IP-based failed login event.
$this->flood->register('user.failed_login_ip', $flood_config->get('ip_window'));
throw new BadRequestHttpException('Sorry, unrecognized username or password.');
}
/**
* {@inheritdoc}
*/
public function authenticate(Request $request)
{
$flood_config = $this->configFactory->get('user.flood');
$username = $request->headers->get('PHP_AUTH_USER');
$password = $request->headers->get('PHP_AUTH_PW');
// Flood protection: this is very similar to the user login form code.
// @see \Drupal\user\Form\UserLoginForm::validateAuthentication()
// Do not allow any login from the current user's IP if the limit has been
// reached. Default is 50 failed attempts allowed in one hour. This is
// independent of the per-user limit to catch attempts from one IP to log
// in to many different user accounts. We have a reasonably high limit
// since there may be only one apparent IP for all users at an institution.
if ($this->flood->isAllowed('basic_auth.failed_login_ip', $flood_config->get('ip_limit'), $flood_config->get('ip_window'))) {
$accounts = $this->entityManager->getStorage('user')->loadByProperties(array('name' => $username, 'status' => 1));
$account = reset($accounts);
if ($account) {
if ($flood_config->get('uid_only')) {
// Register flood events based on the uid only, so they apply for any
// IP address. This is the most secure option.
$identifier = $account->id();
} else {
// The default identifier is a combination of uid and IP address. This
// is less secure but more resistant to denial-of-service attacks that
// could lock out all users with public user names.
$identifier = $account->id() . '-' . $request->getClientIP();
}
// Don't allow login if the limit for this user has been reached.
// Default is to allow 5 failed attempts every 6 hours.
if ($this->flood->isAllowed('basic_auth.failed_login_user', $flood_config->get('user_limit'), $flood_config->get('user_window'), $identifier)) {
$uid = $this->userAuth->authenticate($username, $password);
if ($uid) {
$this->flood->clear('basic_auth.failed_login_user', $identifier);
return $this->entityManager->getStorage('user')->load($uid);
} else {
// Register a per-user failed login event.
$this->flood->register('basic_auth.failed_login_user', $flood_config->get('user_window'), $identifier);
}
}
}
}
// Always register an IP-based failed login event.
$this->flood->register('basic_auth.failed_login_ip', $flood_config->get('ip_window'));
return [];
}
/**
* Checks if user was not authenticated, or if too many logins were attempted.
*
* This validation function should always be the last one.
*/
public function validateFinal(array &$form, FormStateInterface $form_state)
{
$flood_config = $this->config('user.flood');
if (!$form_state->get('uid')) {
// Always register an IP-based failed login event.
$this->flood->register('user.failed_login_ip', $flood_config->get('ip_window'));
// Register a per-user failed login event.
if ($flood_control_user_identifier = $form_state->get('flood_control_user_identifier')) {
$this->flood->register('user.failed_login_user', $flood_config->get('user_window'), $flood_control_user_identifier);
}
if ($flood_control_triggered = $form_state->get('flood_control_triggered')) {
if ($flood_control_triggered == 'user') {
$form_state->setErrorByName('name', $this->formatPlural($flood_config->get('user_limit'), 'There has been more than one failed login attempt for this account. It is temporarily blocked. Try again later or <a href=":url">request a new password</a>.', 'There have been more than @count failed login attempts for this account. It is temporarily blocked. Try again later or <a href=":url">request a new password</a>.', array(':url' => $this->url('user.pass'))));
} else {
// We did not find a uid, so the limit is IP-based.
$form_state->setErrorByName('name', $this->t('Too many failed login attempts from your IP address. This IP address is temporarily blocked. Try again later or <a href=":url">request a new password</a>.', array(':url' => $this->url('user.pass'))));
}
} else {
// Use $form_state->getUserInput() in the error message to guarantee
// that we send exactly what the user typed in. The value from
// $form_state->getValue() may have been modified by validation
// handlers that ran earlier than this one.
$user_input = $form_state->getUserInput();
$query = isset($user_input['name']) ? array('name' => $user_input['name']) : array();
$form_state->setErrorByName('name', $this->t('Unrecognized username or password. <a href=":password">Have you forgotten your password?</a>', array(':password' => $this->url('user.pass', [], array('query' => $query)))));
$accounts = $this->userStorage->loadByProperties(array('name' => $form_state->getValue('name')));
if (!empty($accounts)) {
$this->logger('user')->notice('Login attempt failed for %user.', array('%user' => $form_state->getValue('name')));
} else {
// If the username entered is not a valid user,
// only store the IP address.
$this->logger('user')->notice('Login attempt failed from %ip.', array('%ip' => $this->getRequest()->getClientIp()));
}
}
} elseif ($flood_control_user_identifier = $form_state->get('flood_control_user_identifier')) {
// Clear past failures for this user so as not to block a user who might
// log in and out more than once in an hour.
$this->flood->clear('user.failed_login_user', $flood_control_user_identifier);
}
}
