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<?php
/**
* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
*
* @author Robin Appelman <robin@icewind.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\DAV\Files;
use OC\Files\Search\SearchBinaryOperator;
use OC\Files\Search\SearchComparison;
use OC\Files\Search\SearchOrder;
use OC\Files\Search\SearchQuery;
use OC\Files\View;
use OCA\DAV\Connector\Sabre\CachingTree;
use OCA\DAV\Connector\Sabre\Directory;
use OCA\DAV\Connector\Sabre\FilesPlugin;
use OCA\DAV\Connector\Sabre\TagsPlugin;
use OCP\Files\Cache\ICacheEntry;
use OCP\Files\Folder;
use OCP\Files\IRootFolder;
use OCP\Files\Node;
use OCP\Files\Search\ISearchOperator;
use OCP\Files\Search\ISearchOrder;
use OCP\Files\Search\ISearchQuery;
use OCP\IUser;
use OCP\Share\IManager;
use Sabre\DAV\Exception\NotFound;
use SearchDAV\Backend\ISearchBackend;
use SearchDAV\Backend\SearchPropertyDefinition;
use SearchDAV\Backend\SearchResult;
use SearchDAV\XML\BasicSearch;
use SearchDAV\XML\Literal;
use SearchDAV\XML\Operator;
use SearchDAV\XML\Order;
class FileSearchBackend implements ISearchBackend {
/** @var CachingTree */
private $tree;
/** @var IUser */
private $user;
/** @var IRootFolder */
private $rootFolder;
/** @var IManager */
private $shareManager;
/** @var View */
private $view;
/**
* FileSearchBackend constructor.
*
* @param CachingTree $tree
* @param IUser $user
* @param IRootFolder $rootFolder
* @param IManager $shareManager
* @param View $view
* @internal param IRootFolder $rootFolder
*/
public function __construct(CachingTree $tree, IUser $user, IRootFolder $rootFolder, IManager $shareManager, View $view) {
$this->tree = $tree;
$this->user = $user;
$this->rootFolder = $rootFolder;
$this->shareManager = $shareManager;
$this->view = $view;
}
/**
* Search endpoint will be remote.php/dav
*
* @return string
*/
public function getArbiterPath() {
return '';
}
public function isValidScope($href, $depth, $path) {
// only allow scopes inside the dav server
if (is_null($path)) {
return false;
}
try {
$node = $this->tree->getNodeForPath($path);
return $node instanceof Directory;
} catch (NotFound $e) {
return false;
}
}
public function getPropertyDefinitionsForScope($href, $path) {
// all valid scopes support the same schema
//todo dynamically load all propfind properties that are supported
return [
// queryable properties
new SearchPropertyDefinition('{DAV:}displayname', true, false, true),
new SearchPropertyDefinition('{DAV:}getcontenttype', true, true, true),
new SearchPropertyDefinition('{DAV:}getlastmodified', true, true, true, SearchPropertyDefinition::DATATYPE_DATETIME),
new SearchPropertyDefinition(FilesPlugin::SIZE_PROPERTYNAME, true, true, true, SearchPropertyDefinition::DATATYPE_NONNEGATIVE_INTEGER),
new SearchPropertyDefinition(TagsPlugin::FAVORITE_PROPERTYNAME, true, true, true, SearchPropertyDefinition::DATATYPE_BOOLEAN),
new SearchPropertyDefinition(FilesPlugin::INTERNAL_FILEID_PROPERTYNAME, true, true, false, SearchPropertyDefinition::DATATYPE_NONNEGATIVE_INTEGER),
// select only properties
new SearchPropertyDefinition('{DAV:}resourcetype', false, true, false),
new SearchPropertyDefinition('{DAV:}getcontentlength', false, true, false),
new SearchPropertyDefinition(FilesPlugin::CHECKSUMS_PROPERTYNAME, false, true, false),
new SearchPropertyDefinition(FilesPlugin::PERMISSIONS_PROPERTYNAME, false, true, false),
new SearchPropertyDefinition(FilesPlugin::GETETAG_PROPERTYNAME, false, true, false),
new SearchPropertyDefinition(FilesPlugin::OWNER_ID_PROPERTYNAME, false, true, false),
new SearchPropertyDefinition(FilesPlugin::OWNER_DISPLAY_NAME_PROPERTYNAME, false, true, false),
new SearchPropertyDefinition(FilesPlugin::DATA_FINGERPRINT_PROPERTYNAME, false, true, false),
new SearchPropertyDefinition(FilesPlugin::HAS_PREVIEW_PROPERTYNAME, false, true, false, SearchPropertyDefinition::DATATYPE_BOOLEAN),
new SearchPropertyDefinition(FilesPlugin::FILEID_PROPERTYNAME, false, true, false, SearchPropertyDefinition::DATATYPE_NONNEGATIVE_INTEGER),
];
}
/**
* @param BasicSearch $search
* @return SearchResult[]
*/
public function search(BasicSearch $search) {
if (count($search->from) !== 1) {
throw new \InvalidArgumentException('Searching more than one folder is not supported');
}
$query = $this->transformQuery($search);
$scope = $search->from[0];
if ($scope->path === null) {
throw new \InvalidArgumentException('Using uri\'s as scope is not supported, please use a path relative to the search arbiter instead');
}
$node = $this->tree->getNodeForPath($scope->path);
if (!$node instanceof Directory) {
throw new \InvalidArgumentException('Search is only supported on directories');
}
$fileInfo = $node->getFileInfo();
$folder = $this->rootFolder->get($fileInfo->getPath());
/** @var Folder $folder $results */
$results = $folder->search($query);
return array_map(function (Node $node) {
if ($node instanceof Folder) {
$davNode = new \OCA\DAV\Connector\Sabre\Directory($this->view, $node, $this->tree, $this->shareManager);
} else {
$davNode = new \OCA\DAV\Connector\Sabre\File($this->view, $node, $this->shareManager);
}
$path = $this->getHrefForNode($node);
$this->tree->cacheNode($davNode, $path);
return new SearchResult($davNode, $path);
}, $results);
}
/**
* @param Node $node
* @return string
*/
private function getHrefForNode(Node $node) {
$base = '/files/' . $this->user->getUID();
return $base . $this->view->getRelativePath($node->getPath());
}
/**
* @param BasicSearch $query
* @return ISearchQuery
*/
private function transformQuery(BasicSearch $query) {
// TODO offset, limit
$orders = array_map([$this, 'mapSearchOrder'], $query->orderBy);
return new SearchQuery($this->transformSearchOperation($query->where), 0, 0, $orders, $this->user);
}
/**
* @param Order $order
* @return ISearchOrder
*/
private function mapSearchOrder(Order $order) {
return new SearchOrder($order->order === Order::ASC ? ISearchOrder::DIRECTION_ASCENDING : ISearchOrder::DIRECTION_DESCENDING, $this->mapPropertyNameToColumn($order->property));
}
/**
* @param Operator $operator
* @return ISearchOperator
*/
private function transformSearchOperation(Operator $operator) {
list(, $trimmedType) = explode('}', $operator->type);
switch ($operator->type) {
case Operator::OPERATION_AND:
case Operator::OPERATION_OR:
case Operator::OPERATION_NOT:
$arguments = array_map([$this, 'transformSearchOperation'], $operator->arguments);
return new SearchBinaryOperator($trimmedType, $arguments);
case Operator::OPERATION_EQUAL:
case Operator::OPERATION_GREATER_OR_EQUAL_THAN:
case Operator::OPERATION_GREATER_THAN:
case Operator::OPERATION_LESS_OR_EQUAL_THAN:
case Operator::OPERATION_LESS_THAN:
case Operator::OPERATION_IS_LIKE:
if (count($operator->arguments) !== 2) {
throw new \InvalidArgumentException('Invalid number of arguments for ' . $trimmedType . ' operation');
}
if (!is_string($operator->arguments[0])) {
throw new \InvalidArgumentException('Invalid argument 1 for ' . $trimmedType . ' operation, expected property');
}
if (!($operator->arguments[1] instanceof Literal)) {
throw new \InvalidArgumentException('Invalid argument 2 for ' . $trimmedType . ' operation, expected literal');
}
return new SearchComparison($trimmedType, $this->mapPropertyNameToColumn($operator->arguments[0]), $this->castValue($operator->arguments[0], $operator->arguments[1]->value));
case Operator::OPERATION_IS_COLLECTION:
return new SearchComparison('eq', 'mimetype', ICacheEntry::DIRECTORY_MIMETYPE);
default:
throw new \InvalidArgumentException('Unsupported operation ' . $trimmedType . ' (' . $operator->type . ')');
}
}
/**
* @param string $propertyName
* @return string
*/
private function mapPropertyNameToColumn($propertyName) {
switch ($propertyName) {
case '{DAV:}displayname':
return 'name';
case '{DAV:}getcontenttype':
return 'mimetype';
case '{DAV:}getlastmodified':
return 'mtime';
case FilesPlugin::SIZE_PROPERTYNAME:
return 'size';
case TagsPlugin::FAVORITE_PROPERTYNAME:
return 'favorite';
case TagsPlugin::TAGS_PROPERTYNAME:
return 'tagname';
case FilesPlugin::INTERNAL_FILEID_PROPERTYNAME:
return 'fileid';
default:
throw new \InvalidArgumentException('Unsupported property for search or order: ' . $propertyName);
}
}
private function castValue($propertyName, $value) {
$allProps = $this->getPropertyDefinitionsForScope('', '');
foreach ($allProps as $prop) {
if ($prop->name === $propertyName) {
$dataType = $prop->dataType;
switch ($dataType) {
case SearchPropertyDefinition::DATATYPE_BOOLEAN:
return $value === 'yes';
case SearchPropertyDefinition::DATATYPE_DECIMAL:
case SearchPropertyDefinition::DATATYPE_INTEGER:
case SearchPropertyDefinition::DATATYPE_NONNEGATIVE_INTEGER:
return 0 + $value;
case SearchPropertyDefinition::DATATYPE_DATETIME:
if (is_numeric($value)) {
return 0 + $value;
}
$date = \DateTime::createFromFormat(\DateTime::ATOM, $value);
return ($date instanceof \DateTime) ? $date->getTimestamp() : 0;
default:
return $value;
}
}
}
return $value;
}
}