mirror of
https://github.com/nextcloud/server.git
synced 2025-02-12 12:09:14 +00:00
320 lines
11 KiB
PHP
320 lines
11 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Blaok <i@blaok.me>
|
|
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
|
|
* @author Morris Jobke <hey@morrisjobke.de>
|
|
* @author Olivier Paroz <github@oparoz.com>
|
|
* @author Robin Appelman <robin@icewind.nl>
|
|
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
|
* @author Thomas Müller <thomas.mueller@tmit.eu>
|
|
* @author Vincent Petry <vincent@nextcloud.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 OC\Files\Utils;
|
|
|
|
use OC\Files\Cache\Cache;
|
|
use OC\Files\Filesystem;
|
|
use OC\Files\Storage\FailedStorage;
|
|
use OC\Files\Storage\Home;
|
|
use OC\ForbiddenException;
|
|
use OC\Hooks\PublicEmitter;
|
|
use OC\Lock\DBLockingProvider;
|
|
use OCA\Files_Sharing\SharedStorage;
|
|
use OCP\EventDispatcher\IEventDispatcher;
|
|
use OCP\Files\Events\BeforeFileScannedEvent;
|
|
use OCP\Files\Events\BeforeFolderScannedEvent;
|
|
use OCP\Files\Events\FileCacheUpdated;
|
|
use OCP\Files\Events\FileScannedEvent;
|
|
use OCP\Files\Events\FolderScannedEvent;
|
|
use OCP\Files\Events\NodeAddedToCache;
|
|
use OCP\Files\Events\NodeRemovedFromCache;
|
|
use OCP\Files\Mount\IMountPoint;
|
|
use OCP\Files\NotFoundException;
|
|
use OCP\Files\Storage\IStorage;
|
|
use OCP\Files\StorageNotAvailableException;
|
|
use OCP\IDBConnection;
|
|
use OCP\Lock\ILockingProvider;
|
|
use Psr\Log\LoggerInterface;
|
|
|
|
/**
|
|
* Class Scanner
|
|
*
|
|
* Hooks available in scope \OC\Utils\Scanner
|
|
* - scanFile(string $absolutePath)
|
|
* - scanFolder(string $absolutePath)
|
|
*
|
|
* @package OC\Files\Utils
|
|
*/
|
|
class Scanner extends PublicEmitter {
|
|
public const MAX_ENTRIES_TO_COMMIT = 10000;
|
|
|
|
/** @var string $user */
|
|
private $user;
|
|
|
|
/** @var IDBConnection */
|
|
protected $db;
|
|
|
|
/** @var IEventDispatcher */
|
|
private $dispatcher;
|
|
|
|
protected LoggerInterface $logger;
|
|
|
|
/**
|
|
* Whether to use a DB transaction
|
|
*
|
|
* @var bool
|
|
*/
|
|
protected $useTransaction;
|
|
|
|
/**
|
|
* Number of entries scanned to commit
|
|
*
|
|
* @var int
|
|
*/
|
|
protected $entriesToCommit;
|
|
|
|
/**
|
|
* @param string $user
|
|
* @param IDBConnection|null $db
|
|
* @param IEventDispatcher $dispatcher
|
|
*/
|
|
public function __construct($user, $db, IEventDispatcher $dispatcher, LoggerInterface $logger) {
|
|
$this->user = $user;
|
|
$this->db = $db;
|
|
$this->dispatcher = $dispatcher;
|
|
$this->logger = $logger;
|
|
// when DB locking is used, no DB transactions will be used
|
|
$this->useTransaction = !(\OC::$server->get(ILockingProvider::class) instanceof DBLockingProvider);
|
|
}
|
|
|
|
/**
|
|
* get all storages for $dir
|
|
*
|
|
* @param string $dir
|
|
* @return array<string, IMountPoint>
|
|
*/
|
|
protected function getMounts($dir) {
|
|
//TODO: move to the node based fileapi once that's done
|
|
\OC_Util::tearDownFS();
|
|
\OC_Util::setupFS($this->user);
|
|
|
|
$mountManager = Filesystem::getMountManager();
|
|
$mounts = $mountManager->findIn($dir);
|
|
$mounts[] = $mountManager->find($dir);
|
|
$mounts = array_reverse($mounts); //start with the mount of $dir
|
|
$mountPoints = array_map(fn ($mount) => $mount->getMountPoint(), $mounts);
|
|
|
|
return array_combine($mountPoints, $mounts);
|
|
}
|
|
|
|
/**
|
|
* attach listeners to the scanner
|
|
*
|
|
* @param \OC\Files\Mount\MountPoint $mount
|
|
*/
|
|
protected function attachListener($mount) {
|
|
$scanner = $mount->getStorage()->getScanner();
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'scanFile', function ($path) use ($mount) {
|
|
$this->emit('\OC\Files\Utils\Scanner', 'scanFile', [$mount->getMountPoint() . $path]);
|
|
$this->dispatcher->dispatchTyped(new BeforeFileScannedEvent($mount->getMountPoint() . $path));
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'scanFolder', function ($path) use ($mount) {
|
|
$this->emit('\OC\Files\Utils\Scanner', 'scanFolder', [$mount->getMountPoint() . $path]);
|
|
$this->dispatcher->dispatchTyped(new BeforeFolderScannedEvent($mount->getMountPoint() . $path));
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'postScanFile', function ($path) use ($mount) {
|
|
$this->emit('\OC\Files\Utils\Scanner', 'postScanFile', [$mount->getMountPoint() . $path]);
|
|
$this->dispatcher->dispatchTyped(new FileScannedEvent($mount->getMountPoint() . $path));
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'postScanFolder', function ($path) use ($mount) {
|
|
$this->emit('\OC\Files\Utils\Scanner', 'postScanFolder', [$mount->getMountPoint() . $path]);
|
|
$this->dispatcher->dispatchTyped(new FolderScannedEvent($mount->getMountPoint() . $path));
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'normalizedNameMismatch', function ($path) use ($mount) {
|
|
$this->emit('\OC\Files\Utils\Scanner', 'normalizedNameMismatch', [$path]);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param string $dir
|
|
*/
|
|
public function backgroundScan($dir) {
|
|
$mounts = $this->getMounts($dir);
|
|
foreach ($mounts as $mount) {
|
|
try {
|
|
$storage = $mount->getStorage();
|
|
if (is_null($storage)) {
|
|
continue;
|
|
}
|
|
|
|
// don't bother scanning failed storages (shortcut for same result)
|
|
if ($storage->instanceOfStorage(FailedStorage::class)) {
|
|
continue;
|
|
}
|
|
|
|
/** @var \OC\Files\Cache\Scanner $scanner */
|
|
$scanner = $storage->getScanner();
|
|
$this->attachListener($mount);
|
|
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'removeFromCache', function ($path) use ($storage) {
|
|
$this->triggerPropagator($storage, $path);
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'updateCache', function ($path) use ($storage) {
|
|
$this->triggerPropagator($storage, $path);
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'addToCache', function ($path) use ($storage) {
|
|
$this->triggerPropagator($storage, $path);
|
|
});
|
|
|
|
$propagator = $storage->getPropagator();
|
|
$propagator->beginBatch();
|
|
$scanner->backgroundScan();
|
|
$propagator->commitBatch();
|
|
} catch (\Exception $e) {
|
|
$this->logger->error("Error while trying to scan mount as {$mount->getMountPoint()}:" . $e->getMessage(), ['exception' => $e, 'app' => 'files']);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $dir
|
|
* @param $recursive
|
|
* @param callable|null $mountFilter
|
|
* @throws ForbiddenException
|
|
* @throws NotFoundException
|
|
*/
|
|
public function scan($dir = '', $recursive = \OC\Files\Cache\Scanner::SCAN_RECURSIVE, ?callable $mountFilter = null) {
|
|
if (!Filesystem::isValidPath($dir)) {
|
|
throw new \InvalidArgumentException('Invalid path to scan');
|
|
}
|
|
$mounts = $this->getMounts($dir);
|
|
foreach ($mounts as $mount) {
|
|
if ($mountFilter && !$mountFilter($mount)) {
|
|
continue;
|
|
}
|
|
$storage = $mount->getStorage();
|
|
if (is_null($storage)) {
|
|
continue;
|
|
}
|
|
|
|
// don't bother scanning failed storages (shortcut for same result)
|
|
if ($storage->instanceOfStorage(FailedStorage::class)) {
|
|
continue;
|
|
}
|
|
|
|
// if the home storage isn't writable then the scanner is run as the wrong user
|
|
if ($storage->instanceOfStorage(Home::class)) {
|
|
/** @var Home $storage */
|
|
foreach (['', 'files'] as $path) {
|
|
if (!$storage->isCreatable($path)) {
|
|
$fullPath = $storage->getSourcePath($path);
|
|
if (!$storage->is_dir($path) && $storage->getCache()->inCache($path)) {
|
|
throw new NotFoundException("User folder $fullPath exists in cache but not on disk");
|
|
} elseif ($storage->is_dir($path)) {
|
|
$ownerUid = fileowner($fullPath);
|
|
$owner = posix_getpwuid($ownerUid);
|
|
$owner = $owner['name'] ?? $ownerUid;
|
|
$permissions = decoct(fileperms($fullPath));
|
|
throw new ForbiddenException("User folder $fullPath is not writable, folders is owned by $owner and has mode $permissions");
|
|
} elseif (isset($mounts[$mount->getMountPoint() . $path . '/'])) {
|
|
// /<user>/files is overwritten by a mountpoint, so this check is irrelevant
|
|
break;
|
|
} else {
|
|
// if the root exists in neither the cache nor the storage the user isn't setup yet
|
|
break 2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// don't scan received local shares, these can be scanned when scanning the owner's storage
|
|
if ($storage->instanceOfStorage(SharedStorage::class)) {
|
|
continue;
|
|
}
|
|
$relativePath = $mount->getInternalPath($dir);
|
|
/** @var \OC\Files\Cache\Scanner $scanner */
|
|
$scanner = $storage->getScanner();
|
|
$scanner->setUseTransactions(false);
|
|
$this->attachListener($mount);
|
|
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'removeFromCache', function ($path) use ($storage) {
|
|
$this->postProcessEntry($storage, $path);
|
|
$this->dispatcher->dispatchTyped(new NodeRemovedFromCache($storage, $path));
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'updateCache', function ($path) use ($storage) {
|
|
$this->postProcessEntry($storage, $path);
|
|
$this->dispatcher->dispatchTyped(new FileCacheUpdated($storage, $path));
|
|
});
|
|
$scanner->listen('\OC\Files\Cache\Scanner', 'addToCache', function ($path, $storageId, $data, $fileId) use ($storage) {
|
|
$this->postProcessEntry($storage, $path);
|
|
if ($fileId) {
|
|
$this->dispatcher->dispatchTyped(new FileCacheUpdated($storage, $path));
|
|
} else {
|
|
$this->dispatcher->dispatchTyped(new NodeAddedToCache($storage, $path));
|
|
}
|
|
});
|
|
|
|
if (!$storage->file_exists($relativePath)) {
|
|
throw new NotFoundException($dir);
|
|
}
|
|
|
|
if ($this->useTransaction) {
|
|
$this->db->beginTransaction();
|
|
}
|
|
try {
|
|
$propagator = $storage->getPropagator();
|
|
$propagator->beginBatch();
|
|
$scanner->scan($relativePath, $recursive, \OC\Files\Cache\Scanner::REUSE_ETAG | \OC\Files\Cache\Scanner::REUSE_SIZE);
|
|
$cache = $storage->getCache();
|
|
if ($cache instanceof Cache) {
|
|
// only re-calculate for the root folder we scanned, anything below that is taken care of by the scanner
|
|
$cache->correctFolderSize($relativePath);
|
|
}
|
|
$propagator->commitBatch();
|
|
} catch (StorageNotAvailableException $e) {
|
|
$this->logger->error('Storage ' . $storage->getId() . ' not available', ['exception' => $e]);
|
|
$this->emit('\OC\Files\Utils\Scanner', 'StorageNotAvailable', [$e]);
|
|
}
|
|
if ($this->useTransaction) {
|
|
$this->db->commit();
|
|
}
|
|
}
|
|
}
|
|
|
|
private function triggerPropagator(IStorage $storage, $internalPath) {
|
|
$storage->getPropagator()->propagateChange($internalPath, time());
|
|
}
|
|
|
|
private function postProcessEntry(IStorage $storage, $internalPath) {
|
|
$this->triggerPropagator($storage, $internalPath);
|
|
if ($this->useTransaction) {
|
|
$this->entriesToCommit++;
|
|
if ($this->entriesToCommit >= self::MAX_ENTRIES_TO_COMMIT) {
|
|
$propagator = $storage->getPropagator();
|
|
$this->entriesToCommit = 0;
|
|
$this->db->commit();
|
|
$propagator->commitBatch();
|
|
$this->db->beginTransaction();
|
|
$propagator->beginBatch();
|
|
}
|
|
}
|
|
}
|
|
}
|