crowd_auth.module

<?php

/**
 * @file
 * Contains crowd_auth.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\crowd_auth\Entity\Server;
use Drupal\user\Entity\User;
use Drupal\crowd_auth\CrowdUserException;

define('CROWD_AUTH_PROVIDER', 'crowd_auth');

/**
 * Implements hook_help().
 */
function crowd_auth_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the crowd_auth module.
    case 'help.page.crowd_auth':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Atlassian Crowd Authentication Provider') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_form_FORM_ID_alter(). for user_login_form.
 */
function crowd_auth_form_user_login_form_alter(&$form, $form_state, $form_id) {
  _crowd_auth_form_user_login_alter($form, $form_state, 'user_login');

}

/**
 * Implements hook_form_FORM_ID_alter(). for user_login_block.
 */
function crowd_auth_form_user_login_block_alter(&$form, &$form_state) {
  _crowd_auth_form_user_login_alter($form, $form_state, 'user_login_block');

}


function _crowd_auth_form_user_login_alter(&$form, &$form_state, $form_id) {
  if (count(\Drupal::service('crowd.servers')->getEnabledServers()) > 0) {
    $key = array_search('::validateAuthentication', $form['#validate']);
    $form['#validate'][$key] = 'crowd_auth_core_override_user_login_authenticate_validate';
    array_splice($form['#validate'], $key + 1, 0, 'crowd_auth_user_login_authenticate_validate');
  }
}

function crowd_auth_core_override_user_login_authenticate_validate($form, &$form_state) {
  if (!empty($form_state->get('uid'))) {
    return;
  }
  $original_form = $form_state->getFormObject();
  $original_form->validateAuthentication($form, $form_state);
}

function crowd_auth_user_login_authenticate_validate($form, &$form_state) {
  $servers = \Drupal::service('crowd.servers')->getEnabledServers();

  foreach ($servers as $server) {
    if ($server->connect()) {
      try {
        $result = $server->registerAndLogin($form_state->getValue('name'), $form_state->getValue('pass'));
        if (is_object($result)) {
          $form_state->set('uid', $result->id());
        }
      } catch (CrowdUserException $ex) {
        return;
      }
    }
  }
}

function crowd_auth_form_user_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state) {
  $account = $form_state->getFormObject()->getEntity();
  $authMap = \Drupal::service('externalauth.authmap')->getAuthData($account->id(), CROWD_AUTH_PROVIDER);
  if (!$authMap) {
    return;
  }
  $data = unserialize($authMap['data']);

  $server = \Drupal::service('crowd.servers')->getServerById($data['server_id']);
  if (!$server) {
    return;
  }

  $form['account']['pass']['#access']
    = $form['account']['current_pass']['#access']
    = $form['account']['mail']['#access']
    = $form['account']['name']['#access']
    = FALSE;

  foreach ($form['account']['roles']['#options'] as $roleId => $role) {
    if ($role = $server->getMappingForLocalGroup($roleId)) {
      $form['account']['roles'][$roleId] = [
        '#default_value' => ($account->hasRole($role->id())) ? $roleId : 0,
        '#disabled' => 1
      ];
    }
  }
}