public function RestfulAuthenticationBasic::authenticate in RESTful 7

Overrides RestfulAuthenticationInterface::authenticate

See also

user_login_authenticate_validate().

File

plugins/authentication/RestfulAuthenticationBasic.class.php, line 28

Contains RestfulAuthenticationBasic

Class

RestfulAuthenticationBasic

@file Contains RestfulAuthenticationBasic

Code

public function authenticate(array $request = array(), $method = \RestfulInterface::GET) {
  list($username, $password) = $this
    ->getCredentials();

  // 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 (!flood_is_allowed('failed_login_attempt_ip', variable_get('user_failed_login_ip_limit', 50), variable_get('user_failed_login_ip_window', 3600))) {
    throw new RestfulFloodException(format_string('Rejected by ip flood control.'));
  }
  if (!($uid = db_query_range("SELECT uid FROM {users} WHERE name = :name AND status = 1", 0, 1, array(
    ':name' => $username,
  ))
    ->fetchField())) {

    // Always register an IP-based failed login event.
    flood_register_event('failed_login_attempt_ip', variable_get('user_failed_login_ip_window', 3600), ip_address());
    return;
  }
  if (variable_get('user_failed_login_identifier_uid_only', FALSE)) {

    // Register flood events based on the uid only, so they apply for any
    // IP address. This is the most secure option.
    $identifier = $uid;
  }
  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 = $uid . '-' . ip_address();
  }

  // Don't allow login if the limit for this user has been reached.
  // Default is to allow 5 failed attempts every 6 hours.
  if (flood_is_allowed('failed_login_attempt_user', variable_get('user_failed_login_user_limit', 5), variable_get('user_failed_login_user_window', 21600), $identifier)) {

    // We are not limited by flood control, so try to authenticate.
    if ($uid = user_authenticate($username, $password)) {

      // Clear the user based flood control.
      flood_clear_event('failed_login_attempt_user', $identifier);
      return user_load($uid);
    }
    flood_register_event('failed_login_attempt_user', variable_get('user_failed_login_user_window', 3600), $identifier);
  }
  else {
    flood_register_event('failed_login_attempt_user', variable_get('user_failed_login_user_window', 3600), $identifier);
    throw new RestfulFloodException(format_string('Rejected by user flood control.'));
  }
}