class GroupContentQueryAccessHandler in Group 8

Same name and namespace in other branches

2.0.x src/Entity/Access/GroupContentQueryAccessHandler.php \Drupal\group\Entity\Access\GroupContentQueryAccessHandler

Controls query access for group_content entities.

View source

class GroupContentQueryAccessHandler extends QueryAccessHandlerBase {

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * The group content enabler manager.
   *
   * @var \Drupal\group\Plugin\GroupContentEnablerManagerInterface
   */
  protected $groupContentEnablerManager;

  /**
   * {@inheritdoc}
   */
  public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {

    /** @var static $instance */
    $instance = parent::createInstance($container, $entity_type);
    $instance->entityTypeManager = $container
      ->get('entity_type.manager');
    $instance->groupContentEnablerManager = $container
      ->get('plugin.manager.group_content_enabler');
    return $instance;
  }

  /**
   * {@inheritdoc}
   */
  protected function buildConditions($operation, AccountInterface $account) {
    $conditions = new ConditionGroup('OR');

    // @todo Remove these lines once we kill the bypass permission.
    // If the account can bypass group access, we do not alter the query at all.
    $conditions
      ->addCacheContexts([
      'user.permissions',
    ]);
    if ($account
      ->hasPermission('bypass group access')) {
      return $conditions;
    }
    $conditions
      ->addCacheContexts([
      'user.group_permissions',
    ]);
    $calculated_permissions = $this->groupPermissionCalculator
      ->calculatePermissions($account);
    $group_permissions = $calculated_permissions
      ->getItemsByScope(CGPII::SCOPE_GROUP);

    /** @var \Drupal\group\Entity\GroupContentTypeInterface[] $group_content_types */
    $group_content_types = $this->entityTypeManager
      ->getStorage('group_content_type')
      ->loadMultiple();
    $allowed_any_ids = $allowed_own_ids = $all_ids = [];
    foreach ($group_content_types as $group_content_type_id => $group_content_type) {
      $plugin_id = $group_content_type
        ->getContentPluginId();

      // For backwards compatibility reasons, if the group content enabler
      // plugin used by the group content type does not specify a permission
      // provider, we do not alter the query for that group content type. In
      // 8.2.x all group content types will get a permission handler by default,
      // so this check can be safely removed then.
      if (!$this->groupContentEnablerManager
        ->hasHandler($plugin_id, 'permission_provider')) {
        continue;
      }
      $handler = $this->groupContentEnablerManager
        ->getPermissionProvider($plugin_id);
      $admin_permission = $handler
        ->getAdminPermission();
      $any_permission = $handler
        ->getPermission($operation, 'relation', 'any');
      $own_permission = $handler
        ->getPermission($operation, 'relation', 'own');

      // For each iteration, we can check all group items because it's still
      // faster than checking the DB for which Group ID belongs to which group
      // content type. We will add in the group-type scope per group content type.
      $applicable_permissions = array_merge($group_permissions, [
        $calculated_permissions
          ->getItem(CGPII::SCOPE_GROUP_TYPE, $group_content_type
          ->getGroupTypeId()),
      ]);
      foreach ($applicable_permissions as $item) {
        $all_ids[$item
          ->getScope()][] = $item
          ->getIdentifier();

        // For groups, we need to get the group ID, but for group types, we need
        // to use the group content type ID rather than the group type ID.
        $identifier = $item
          ->getScope() === CGPII::SCOPE_GROUP ? $item
          ->getIdentifier() : $group_content_type_id;
        if ($admin_permission !== FALSE && $item
          ->hasPermission($admin_permission)) {
          $allowed_any_ids[$item
            ->getScope()][] = $identifier;
        }
        elseif ($any_permission !== FALSE && $item
          ->hasPermission($any_permission)) {
          $allowed_any_ids[$item
            ->getScope()][] = $identifier;
        }
        elseif ($own_permission !== FALSE && $item
          ->hasPermission($own_permission)) {
          $allowed_own_ids[$item
            ->getScope()][] = $identifier;
        }
      }
    }

    // If no group type or group gave access, we deny access altogether.
    if (empty($allowed_any_ids) && empty($allowed_own_ids)) {
      $conditions
        ->alwaysFalse();
      return $conditions;
    }

    // We might see multiple values in the $all_ids variable because we looped
    // over all calculated permissions multiple times.
    if (!empty($all_ids[CGPII::SCOPE_GROUP])) {
      $all_ids[CGPII::SCOPE_GROUP] = array_unique($all_ids[CGPII::SCOPE_GROUP]);
    }

    // Add the allowed group types to the query (if any).
    if (!empty($allowed_any_ids[CGPII::SCOPE_GROUP_TYPE])) {
      $sub_condition = new ConditionGroup();
      $sub_condition
        ->addCondition('type', $allowed_any_ids[CGPII::SCOPE_GROUP_TYPE]);

      // If the user had memberships, we need to make sure they are excluded
      // from group type based matches as the memberships' permissions take
      // precedence.
      if (!empty($all_ids[CGPII::SCOPE_GROUP])) {
        $sub_condition
          ->addCondition('gid', $all_ids[CGPII::SCOPE_GROUP], 'NOT IN');
      }
      $conditions
        ->addCondition($sub_condition);
    }

    // Add the allowed owner group types to the query (if any).
    if (!empty($allowed_own_ids[CGPII::SCOPE_GROUP_TYPE])) {
      $sub_condition = new ConditionGroup();
      $sub_condition
        ->addCondition('uid', $account
        ->id());
      $sub_condition
        ->addCondition('type', $allowed_own_ids[CGPII::SCOPE_GROUP_TYPE]);

      // If the user had memberships, we need to make sure they are excluded
      // from group type based matches as the memberships' permissions take
      // precedence.
      if (!empty($all_ids[CGPII::SCOPE_GROUP])) {
        $sub_condition
          ->addCondition('gid', $all_ids[CGPII::SCOPE_GROUP], 'NOT IN');
      }
      $conditions
        ->addCacheContexts([
        'user',
      ]);
      $conditions
        ->addCondition($sub_condition);
    }

    // Add the memberships with access to the query (if any).
    if (!empty($allowed_any_ids[CGPII::SCOPE_GROUP])) {
      $conditions
        ->addCondition('gid', array_unique($allowed_any_ids[CGPII::SCOPE_GROUP]));
    }

    // Add the owner memberships with access to the query (if any).
    if (!empty($allowed_own_ids[CGPII::SCOPE_GROUP])) {
      $sub_condition = new ConditionGroup();
      $sub_condition
        ->addCondition('uid', $account
        ->id());
      $sub_condition
        ->addCondition('gid', array_unique($allowed_own_ids[CGPII::SCOPE_GROUP]));
      $conditions
        ->addCacheContexts([
        'user',
      ]);
      $conditions
        ->addCondition($sub_condition);
    }
    return $conditions;
  }

}

Members

Name	Modifiers	Type	Description
GroupContentQueryAccessHandler::$entityTypeManager	protected	property	The entity type manager.
GroupContentQueryAccessHandler::$groupContentEnablerManager	protected	property	The group content enabler manager.
GroupContentQueryAccessHandler::buildConditions	protected	function	Builds the conditions for the given operation and account. Overrides QueryAccessHandlerBase::buildConditions
GroupContentQueryAccessHandler::createInstance	public static	function	Instantiates a new instance of this entity handler. Overrides QueryAccessHandlerBase::createInstance
QueryAccessHandlerBase::$currentUser	protected	property	The current user.
QueryAccessHandlerBase::$entityType	protected	property	The entity type.
QueryAccessHandlerBase::$eventDispatcher	protected	property	The event dispatcher.
QueryAccessHandlerBase::$groupPermissionCalculator	protected	property	The group permission calculator.
QueryAccessHandlerBase::getConditions	public	function	Gets the conditions for the given operation and user. Overrides QueryAccessHandlerInterface::getConditions
QueryAccessHandlerBase::__construct	public	function	Constructs a new QueryAccessHandlerBase object.

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class GroupContentQueryAccessHandler in Group 8

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