UserLoginForm.php
Same filename in other branches
Namespace
Drupal\user\FormFile
-
core/
modules/ user/ src/ Form/ UserLoginForm.php
View source
<?php
namespace Drupal\user\Form;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\RendererInterface;
use Drupal\Core\Render\BareHtmlPageRendererInterface;
use Drupal\Core\Url;
use Drupal\user\UserAuthInterface;
use Drupal\user\UserInterface;
use Drupal\user\UserStorageInterface;
use Drupal\user\UserFloodControlInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Provides a user login form.
*
* @internal
*/
class UserLoginForm extends FormBase {
/**
* The user flood control service.
*
* @var \Drupal\user\UserFloodControl
*/
protected $userFloodControl;
/**
* The user storage.
*
* @var \Drupal\user\UserStorageInterface
*/
protected $userStorage;
/**
* The user authentication object.
*
* @var \Drupal\user\UserAuthInterface
*/
protected $userAuth;
/**
* The renderer.
*
* @var \Drupal\Core\Render\RendererInterface
*/
protected $renderer;
/**
* The bare HTML renderer.
*
* @var \Drupal\Core\Render\BareHtmlPageRendererInterface
*/
protected $bareHtmlPageRenderer;
/**
* Constructs a new UserLoginForm.
*
* @param \Drupal\user\UserFloodControlInterface $user_flood_control
* The user flood control service.
* @param \Drupal\user\UserStorageInterface $user_storage
* The user storage.
* @param \Drupal\user\UserAuthInterface $user_auth
* The user authentication object.
* @param \Drupal\Core\Render\RendererInterface $renderer
* The renderer.
* @param \Drupal\Core\Render\BareHtmlPageRendererInterface $bare_html_renderer
* The renderer.
*/
public function __construct($user_flood_control, UserStorageInterface $user_storage, UserAuthInterface $user_auth, RendererInterface $renderer, BareHtmlPageRendererInterface $bare_html_renderer = NULL) {
if (!$user_flood_control instanceof UserFloodControlInterface) {
@trigger_error('Passing the flood service to ' . __METHOD__ . ' is deprecated in drupal:9.1.0 and is replaced by user.flood_control in drupal:10.0.0. See https://www.drupal.org/node/3067148', E_USER_DEPRECATED);
$user_flood_control = \Drupal::service('user.flood_control');
}
if (!$bare_html_renderer instanceof BareHtmlPageRendererInterface) {
@trigger_error('Calling UserLoginForm::__construct() without the $bare_html_renderer argument is deprecated in drupal:9.4.0 and will be required before drupal:10.0.0. See https://www.drupal.org/node/3251987.', E_USER_DEPRECATED);
$bare_html_renderer = \Drupal::service('bare_html_page_renderer');
}
$this->userFloodControl = $user_flood_control;
$this->userStorage = $user_storage;
$this->userAuth = $user_auth;
$this->renderer = $renderer;
$this->bareHtmlPageRenderer = $bare_html_renderer;
}
/**
* {@inheritdoc}
*/
public static function create(ContainerInterface $container) {
return new static($container->get('user.flood_control'), $container->get('entity_type.manager')
->getStorage('user'), $container->get('user.auth'), $container->get('renderer'), $container->get('bare_html_page_renderer'));
}
/**
* {@inheritdoc}
*/
public function getFormId() {
return 'user_login_form';
}
/**
* {@inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state) {
$config = $this->config('system.site');
// Display login form:
$form['name'] = [
'#type' => 'textfield',
'#title' => $this->t('Username'),
'#size' => 60,
'#maxlength' => UserInterface::USERNAME_MAX_LENGTH,
'#description' => $this->t('Enter your @s username.', [
'@s' => $config->get('name'),
]),
'#required' => TRUE,
'#attributes' => [
'autocorrect' => 'none',
'autocapitalize' => 'none',
'spellcheck' => 'false',
'autofocus' => 'autofocus',
],
];
$form['pass'] = [
'#type' => 'password',
'#title' => $this->t('Password'),
'#size' => 60,
'#description' => $this->t('Enter the password that accompanies your username.'),
'#required' => TRUE,
];
$form['actions'] = [
'#type' => 'actions',
];
$form['actions']['submit'] = [
'#type' => 'submit',
'#value' => $this->t('Log in'),
];
$form['#validate'][] = '::validateName';
$form['#validate'][] = '::validateAuthentication';
$form['#validate'][] = '::validateFinal';
$this->renderer
->addCacheableDependency($form, $config);
return $form;
}
/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state) {
if (empty($uid = $form_state->get('uid'))) {
return;
}
$account = $this->userStorage
->load($uid);
// A destination was set, probably on an exception controller.
if (!$this->getRequest()->request
->has('destination')) {
$form_state->setRedirect('entity.user.canonical', [
'user' => $account->id(),
]);
}
else {
$this->getRequest()->query
->set('destination', $this->getRequest()->request
->get('destination'));
}
user_login_finalize($account);
}
/**
* Sets an error if supplied username has been blocked.
*/
public function validateName(array &$form, FormStateInterface $form_state) {
if (!$form_state->isValueEmpty('name') && user_is_blocked($form_state->getValue('name'))) {
// Blocked in user administration.
$form_state->setErrorByName('name', $this->t('The username %name has not been activated or is blocked.', [
'%name' => $form_state->getValue('name'),
]));
}
}
/**
* Checks supplied username/password against local users table.
*
* If successful, $form_state->get('uid') is set to the matching user ID.
*/
public function validateAuthentication(array &$form, FormStateInterface $form_state) {
$password = trim($form_state->getValue('pass'));
$flood_config = $this->config('user.flood');
if (!$form_state->isValueEmpty('name') && strlen($password) > 0) {
// Do not allow any login from the current user's IP if the limit has been
// reached. Default is 50 failed attempts allowed in one hour. This is
// independent of the per-user limit to catch attempts from one IP to log
// in to many different user accounts. We have a reasonably high limit
// since there may be only one apparent IP for all users at an institution.
if (!$this->userFloodControl
->isAllowed('user.failed_login_ip', $flood_config->get('ip_limit'), $flood_config->get('ip_window'))) {
$form_state->set('flood_control_triggered', 'ip');
return;
}
$accounts = $this->userStorage
->loadByProperties([
'name' => $form_state->getValue('name'),
'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() . '-' . $this->getRequest()
->getClientIP();
}
$form_state->set('flood_control_user_identifier', $identifier);
// Don't allow login if the limit for this user has been reached.
// Default is to allow 5 failed attempts every 6 hours.
if (!$this->userFloodControl
->isAllowed('user.failed_login_user', $flood_config->get('user_limit'), $flood_config->get('user_window'), $identifier)) {
$form_state->set('flood_control_triggered', 'user');
return;
}
}
// We are not limited by flood control, so try to authenticate.
// Store $uid in form state as a flag for self::validateFinal().
$uid = $this->userAuth
->authenticate($form_state->getValue('name'), $password);
$form_state->set('uid', $uid);
}
}
/**
* Checks if user was not authenticated, or if too many logins were attempted.
*
* This validation function should always be the last one.
*/
public function validateFinal(array &$form, FormStateInterface $form_state) {
$flood_config = $this->config('user.flood');
if (!$form_state->get('uid')) {
// Always register an IP-based failed login event.
$this->userFloodControl
->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->userFloodControl
->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') {
$message = $this->formatPlural($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>.', [
':url' => Url::fromRoute('user.pass')->toString(),
]);
}
else {
// We did not find a uid, so the limit is IP-based.
$message = $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>.', [
':url' => Url::fromRoute('user.pass')->toString(),
]);
}
$response = $this->bareHtmlPageRenderer
->renderBarePage([
'#markup' => $message,
], $this->t('Login failed'), 'maintenance_page');
$response->setStatusCode(403);
$form_state->setResponse($response);
}
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']) ? [
'name' => $user_input['name'],
] : [];
$form_state->setErrorByName('name', $this->t('Unrecognized username or password. <a href=":password">Forgot your password?</a>', [
':password' => Url::fromRoute('user.pass', [], [
'query' => $query,
])->toString(),
]));
$accounts = $this->userStorage
->loadByProperties([
'name' => $form_state->getValue('name'),
]);
if (!empty($accounts)) {
$this->logger('user')
->notice('Login attempt failed for %user.', [
'%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.', [
'%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->userFloodControl
->clear('user.failed_login_user', $flood_control_user_identifier);
}
}
}
Classes
Title | Deprecated | Summary |
---|---|---|
UserLoginForm | Provides a user login form. |
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