示例#1
0
 /**
  * Transforms a database condition to an equivalent search filter.
  *
  * @param \Drupal\Core\Database\Query\ConditionInterface $db_condition
  *   The condition to transform.
  *
  * @return \Drupal\search_api\Query\ConditionGroupInterface|null
  *   A search filter equivalent to $condition, or NULL if the transformation
  *   failed.
  */
 protected function transformDbCondition(ConditionInterface $db_condition)
 {
     $conditions = $db_condition->conditions();
     $filter = $this->query->createConditionGroup($conditions['#conjunction']);
     unset($conditions['#conjunction']);
     foreach ($conditions as $condition) {
         if ($condition['operator'] === NULL) {
             $this->abort('Trying to include a raw SQL condition in a Search API query.');
             return NULL;
         }
         if ($condition['field'] instanceof ConditionInterface) {
             $nested_filter = $this->transformDbCondition($condition['field']);
             if ($nested_filter) {
                 $filter->addConditionGroup($nested_filter);
             } else {
                 return NULL;
             }
         } else {
             $filter->addCondition($this->sanitizeFieldId($condition['field']), $condition['value'], $this->sanitizeOperator($condition['operator']));
         }
     }
     return $filter;
 }
示例#2
0
 /**
  * Adds a node access filter to a search query, if applicable.
  *
  * @param \Drupal\search_api\Query\QueryInterface $query
  *   The query to which a node access filter should be added, if applicable.
  * @param \Drupal\Core\Session\AccountInterface $account
  *   The user for whom the search is executed.
  *
  * @throws \Drupal\search_api\SearchApiException
  *   Thrown if not all necessary fields are indexed on the index.
  */
 protected function addNodeAccess(QueryInterface $query, AccountInterface $account)
 {
     // Don't do anything if the user can access all content.
     if ($account->hasPermission('bypass node access')) {
         return;
     }
     // Gather the affected datasources, grouped by entity type, as well as the
     // unaffected ones.
     $affected_datasources = array();
     $unaffected_datasources = array();
     foreach ($this->index->getDatasources() as $datasource_id => $datasource) {
         $entity_type = $datasource->getEntityTypeId();
         if (in_array($entity_type, array('node', 'comment'))) {
             $affected_datasources[$entity_type][] = $datasource_id;
         } else {
             $unaffected_datasources[] = $datasource_id;
         }
     }
     // The filter structure we want looks like this:
     //   [belongs to other datasource]
     //   OR
     //   (
     //     [is enabled (or was created by the user, if applicable)]
     //     AND
     //     [grants view access to one of the user's gid/realm combinations]
     //   )
     // If there are no "other" datasources, we don't need the nested OR,
     // however, and can add the "ADD"
     // @todo Add a filter tag, once they are implemented.
     if ($unaffected_datasources) {
         $outer_conditions = $query->createConditionGroup('OR', array('content_access'));
         $query->addConditionGroup($outer_conditions);
         foreach ($unaffected_datasources as $datasource_id) {
             $outer_conditions->addCondition('search_api_datasource', $datasource_id);
         }
         $access_conditions = $query->createConditionGroup('AND');
         $outer_conditions->addConditionGroup($access_conditions);
     } else {
         $access_conditions = $query;
     }
     if (!$account->hasPermission('access content')) {
         unset($affected_datasources['node']);
     }
     if (!$account->hasPermission('access comments')) {
         unset($affected_datasources['comment']);
     }
     // If the user does not have the permission to see any content at all, deny
     // access to all items from affected datasources.
     if (!$affected_datasources) {
         // If there were "other" datasources, the existing filter will already
         // remove all results of node or comment datasources. Otherwise, we should
         // not return any results at all.
         if (!$unaffected_datasources) {
             // @todo More elegant way to return no results?
             // @todo Now that field IDs can be picked freely, this can theoretically
             //   even fail! Needs to be fixed!
             $query->addCondition('search_api_language', '');
         }
         return;
     }
     // Collect all the required fields that need to be part of the index.
     $unpublished_own = $account->hasPermission('view own unpublished content');
     $enabled_conditions = $query->createConditionGroup('OR', array('content_access_enabled'));
     foreach ($affected_datasources as $entity_type => $datasources) {
         foreach ($datasources as $datasource_id) {
             // If this is a comment datasource, or users cannot view their own
             // unpublished nodes, a simple filter on "status" is enough. Otherwise,
             // it's a bit more complicated.
             $status_field = $this->findField($datasource_id, 'status', 'boolean');
             if ($status_field) {
                 $enabled_conditions->addCondition($status_field->getFieldIdentifier(), TRUE);
             }
             if ($entity_type == 'node' && $unpublished_own) {
                 $author_field = $this->findField($datasource_id, 'uid', 'integer');
                 if ($author_field) {
                     $enabled_conditions->addCondition($author_field->getFieldIdentifier(), $account->id());
                 }
             }
         }
     }
     $access_conditions->addConditionGroup($enabled_conditions);
     // Filter by the user's node access grants.
     $node_grants_field = $this->findField(NULL, 'search_api_node_grants', 'string');
     if (!$node_grants_field) {
         return;
     }
     $node_grants_field_id = $node_grants_field->getFieldIdentifier();
     $grants_conditions = $query->createConditionGroup('OR', array('content_access_grants'));
     $grants = node_access_grants('view', $account);
     foreach ($grants as $realm => $gids) {
         foreach ($gids as $gid) {
             $grants_conditions->addCondition($node_grants_field_id, "node_access_{$realm}:{$gid}");
         }
     }
     // Also add items that are accessible for everyone by checking the "access
     // all" pseudo grant.
     $grants_conditions->addCondition($node_grants_field_id, 'node_access__all');
     $access_conditions->addConditionGroup($grants_conditions);
 }