351 lines
8.8 KiB
PHP
351 lines
8.8 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Aaron Wood <aaronjwood@gmail.com>
|
|
* @author Lukas Reschke <lukas@statuscode.ch>
|
|
* @author Thomas Müller <thomas.mueller@tmit.eu>
|
|
* @author Vincent Petry <pvince81@owncloud.com>
|
|
*
|
|
* @license AGPL-3.0
|
|
*
|
|
* This code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License, version 3,
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* 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, version 3,
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>
|
|
*
|
|
*/
|
|
|
|
namespace OCA\DAV\Connector\Sabre;
|
|
|
|
use OCP\IDBConnection;
|
|
use OCP\IUser;
|
|
use Sabre\DAV\PropertyStorage\Backend\BackendInterface;
|
|
use Sabre\DAV\PropFind;
|
|
use Sabre\DAV\PropPatch;
|
|
use Sabre\DAV\Tree;
|
|
use Sabre\DAV\Exception\NotFound;
|
|
use Sabre\DAV\Exception\ServiceUnavailable;
|
|
|
|
class CustomPropertiesBackend implements BackendInterface {
|
|
|
|
/**
|
|
* Ignored properties
|
|
*
|
|
* @var array
|
|
*/
|
|
private $ignoredProperties = array(
|
|
'{DAV:}getcontentlength',
|
|
'{DAV:}getcontenttype',
|
|
'{DAV:}getetag',
|
|
'{DAV:}quota-used-bytes',
|
|
'{DAV:}quota-available-bytes',
|
|
'{http://owncloud.org/ns}permissions',
|
|
'{http://owncloud.org/ns}downloadURL',
|
|
'{http://owncloud.org/ns}dDC',
|
|
'{http://owncloud.org/ns}size',
|
|
'{http://nextcloud.org/ns}is-encrypted',
|
|
);
|
|
|
|
/**
|
|
* @var Tree
|
|
*/
|
|
private $tree;
|
|
|
|
/**
|
|
* @var IDBConnection
|
|
*/
|
|
private $connection;
|
|
|
|
/**
|
|
* @var IUser
|
|
*/
|
|
private $user;
|
|
|
|
/**
|
|
* Properties cache
|
|
*
|
|
* @var array
|
|
*/
|
|
private $cache = [];
|
|
|
|
/**
|
|
* @param Tree $tree node tree
|
|
* @param IDBConnection $connection database connection
|
|
* @param IUser $user owner of the tree and properties
|
|
*/
|
|
public function __construct(
|
|
Tree $tree,
|
|
IDBConnection $connection,
|
|
IUser $user) {
|
|
$this->tree = $tree;
|
|
$this->connection = $connection;
|
|
$this->user = $user->getUID();
|
|
}
|
|
|
|
/**
|
|
* Fetches properties for a path.
|
|
*
|
|
* @param string $path
|
|
* @param PropFind $propFind
|
|
* @return void
|
|
*/
|
|
public function propFind($path, PropFind $propFind) {
|
|
try {
|
|
$node = $this->tree->getNodeForPath($path);
|
|
if (!($node instanceof Node)) {
|
|
return;
|
|
}
|
|
} catch (ServiceUnavailable $e) {
|
|
// might happen for unavailable mount points, skip
|
|
return;
|
|
} catch (NotFound $e) {
|
|
// in some rare (buggy) cases the node might not be found,
|
|
// we catch the exception to prevent breaking the whole list with a 404
|
|
// (soft fail)
|
|
\OC::$server->getLogger()->warning(
|
|
'Could not get node for path: \"' . $path . '\" : ' . $e->getMessage(),
|
|
array('app' => 'files')
|
|
);
|
|
return;
|
|
}
|
|
|
|
$requestedProps = $propFind->get404Properties();
|
|
|
|
// these might appear
|
|
$requestedProps = array_diff(
|
|
$requestedProps,
|
|
$this->ignoredProperties
|
|
);
|
|
|
|
if (empty($requestedProps)) {
|
|
return;
|
|
}
|
|
|
|
$props = $this->getProperties($node, $requestedProps);
|
|
foreach ($props as $propName => $propValue) {
|
|
$propFind->set($propName, $propValue);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates properties for a path
|
|
*
|
|
* @param string $path
|
|
* @param PropPatch $propPatch
|
|
*
|
|
* @return void
|
|
*/
|
|
public function propPatch($path, PropPatch $propPatch) {
|
|
$node = $this->tree->getNodeForPath($path);
|
|
if (!($node instanceof Node)) {
|
|
return;
|
|
}
|
|
|
|
$propPatch->handleRemaining(function($changedProps) use ($node) {
|
|
return $this->updateProperties($node, $changedProps);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* This method is called after a node is deleted.
|
|
*
|
|
* @param string $path path of node for which to delete properties
|
|
*/
|
|
public function delete($path) {
|
|
$statement = $this->connection->prepare(
|
|
'DELETE FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ?'
|
|
);
|
|
$statement->execute(array($this->user, '/' . $path));
|
|
$statement->closeCursor();
|
|
|
|
unset($this->cache[$path]);
|
|
}
|
|
|
|
/**
|
|
* This method is called after a successful MOVE
|
|
*
|
|
* @param string $source
|
|
* @param string $destination
|
|
*
|
|
* @return void
|
|
*/
|
|
public function move($source, $destination) {
|
|
$statement = $this->connection->prepare(
|
|
'UPDATE `*PREFIX*properties` SET `propertypath` = ?' .
|
|
' WHERE `userid` = ? AND `propertypath` = ?'
|
|
);
|
|
$statement->execute(array('/' . $destination, $this->user, '/' . $source));
|
|
$statement->closeCursor();
|
|
}
|
|
|
|
/**
|
|
* Returns a list of properties for this nodes.;
|
|
* @param Node $node
|
|
* @param array $requestedProperties requested properties or empty array for "all"
|
|
* @return array
|
|
* @note The properties list is a list of propertynames the client
|
|
* requested, encoded as xmlnamespace#tagName, for example:
|
|
* http://www.example.org/namespace#author If the array is empty, all
|
|
* properties should be returned
|
|
*/
|
|
private function getProperties(Node $node, array $requestedProperties) {
|
|
$path = $node->getPath();
|
|
if (isset($this->cache[$path])) {
|
|
return $this->cache[$path];
|
|
}
|
|
|
|
// TODO: chunking if more than 1000 properties
|
|
$sql = 'SELECT * FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ?';
|
|
|
|
$whereValues = array($this->user, $path);
|
|
$whereTypes = array(null, null);
|
|
|
|
if (!empty($requestedProperties)) {
|
|
// request only a subset
|
|
$sql .= ' AND `propertyname` in (?)';
|
|
$whereValues[] = $requestedProperties;
|
|
$whereTypes[] = \Doctrine\DBAL\Connection::PARAM_STR_ARRAY;
|
|
}
|
|
|
|
$result = $this->connection->executeQuery(
|
|
$sql,
|
|
$whereValues,
|
|
$whereTypes
|
|
);
|
|
|
|
$props = [];
|
|
while ($row = $result->fetch()) {
|
|
$props[$row['propertyname']] = $row['propertyvalue'];
|
|
}
|
|
|
|
$result->closeCursor();
|
|
|
|
$this->cache[$path] = $props;
|
|
return $props;
|
|
}
|
|
|
|
/**
|
|
* Update properties
|
|
*
|
|
* @param Node $node node for which to update properties
|
|
* @param array $properties array of properties to update
|
|
*
|
|
* @return bool
|
|
*/
|
|
private function updateProperties($node, $properties) {
|
|
$path = $node->getPath();
|
|
|
|
$deleteStatement = 'DELETE FROM `*PREFIX*properties`' .
|
|
' WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = ?';
|
|
|
|
$insertStatement = 'INSERT INTO `*PREFIX*properties`' .
|
|
' (`userid`,`propertypath`,`propertyname`,`propertyvalue`) VALUES(?,?,?,?)';
|
|
|
|
$updateStatement = 'UPDATE `*PREFIX*properties` SET `propertyvalue` = ?' .
|
|
' WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = ?';
|
|
|
|
// TODO: use "insert or update" strategy ?
|
|
$existing = $this->getProperties($node, array());
|
|
$this->connection->beginTransaction();
|
|
foreach ($properties as $propertyName => $propertyValue) {
|
|
// If it was null, we need to delete the property
|
|
if (is_null($propertyValue)) {
|
|
if (array_key_exists($propertyName, $existing)) {
|
|
$this->connection->executeUpdate($deleteStatement,
|
|
array(
|
|
$this->user,
|
|
$path,
|
|
$propertyName
|
|
)
|
|
);
|
|
}
|
|
} else {
|
|
if (!array_key_exists($propertyName, $existing)) {
|
|
$this->connection->executeUpdate($insertStatement,
|
|
array(
|
|
$this->user,
|
|
$path,
|
|
$propertyName,
|
|
$propertyValue
|
|
)
|
|
);
|
|
} else {
|
|
$this->connection->executeUpdate($updateStatement,
|
|
array(
|
|
$propertyValue,
|
|
$this->user,
|
|
$path,
|
|
$propertyName
|
|
)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->connection->commit();
|
|
unset($this->cache[$path]);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Bulk load properties for directory children
|
|
*
|
|
* @param Directory $node
|
|
* @param array $requestedProperties requested properties
|
|
*
|
|
* @return void
|
|
*/
|
|
private function loadChildrenProperties(Directory $node, $requestedProperties) {
|
|
$path = $node->getPath();
|
|
if (isset($this->cache[$path])) {
|
|
// we already loaded them at some point
|
|
return;
|
|
}
|
|
|
|
$childNodes = $node->getChildren();
|
|
// pre-fill cache
|
|
foreach ($childNodes as $childNode) {
|
|
$this->cache[$childNode->getPath()] = [];
|
|
}
|
|
|
|
$sql = 'SELECT * FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` LIKE ?';
|
|
$sql .= ' AND `propertyname` in (?) ORDER BY `propertypath`, `propertyname`';
|
|
|
|
$result = $this->connection->executeQuery(
|
|
$sql,
|
|
array($this->user, $this->connection->escapeLikeParameter(rtrim($path, '/')) . '/%', $requestedProperties),
|
|
array(null, null, \Doctrine\DBAL\Connection::PARAM_STR_ARRAY)
|
|
);
|
|
|
|
$oldPath = null;
|
|
$props = [];
|
|
while ($row = $result->fetch()) {
|
|
$path = $row['propertypath'];
|
|
if ($oldPath !== $path) {
|
|
// save previously gathered props
|
|
$this->cache[$oldPath] = $props;
|
|
$oldPath = $path;
|
|
// prepare props for next path
|
|
$props = [];
|
|
}
|
|
$props[$row['propertyname']] = $row['propertyvalue'];
|
|
}
|
|
if (!is_null($oldPath)) {
|
|
// save props from last run
|
|
$this->cache[$oldPath] = $props;
|
|
}
|
|
|
|
$result->closeCursor();
|
|
}
|
|
|
|
}
|