325 lines
11 KiB
PHP
325 lines
11 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Joas Schilling <coding@schilljs.com>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Files\Config;
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use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
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use OC\Files\Filesystem;
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use OCA\Files_Sharing\SharedMount;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\Files\Config\ICachedMountInfo;
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use OCP\Files\Config\IUserMountCache;
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use OCP\Files\Mount\IMountPoint;
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use OCP\Files\Node;
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use OCP\Files\NotFoundException;
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use OCP\ICache;
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use OCP\IDBConnection;
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use OCP\ILogger;
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use OCP\IUser;
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use OCP\IUserManager;
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use OC\Cache\CappedMemoryCache;
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/**
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* Cache mounts points per user in the cache so we can easilly look them up
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*/
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class UserMountCache implements IUserMountCache {
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/**
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* @var IDBConnection
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*/
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private $connection;
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/**
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* @var IUserManager
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*/
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private $userManager;
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/**
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* Cached mount info.
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* Map of $userId to ICachedMountInfo.
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*
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* @var ICache
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**/
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private $mountsForUsers;
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/**
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* @var ILogger
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*/
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private $logger;
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/**
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* @var ICache
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*/
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private $cacheInfoCache;
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/**
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* UserMountCache constructor.
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*
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* @param IDBConnection $connection
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* @param IUserManager $userManager
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* @param ILogger $logger
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*/
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public function __construct(IDBConnection $connection, IUserManager $userManager, ILogger $logger) {
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$this->connection = $connection;
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$this->userManager = $userManager;
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$this->logger = $logger;
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$this->cacheInfoCache = new CappedMemoryCache();
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$this->mountsForUsers = new CappedMemoryCache();
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}
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public function registerMounts(IUser $user, array $mounts) {
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// filter out non-proper storages coming from unit tests
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$mounts = array_filter($mounts, function (IMountPoint $mount) {
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return $mount instanceof SharedMount || $mount->getStorage() && $mount->getStorage()->getCache();
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});
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/** @var ICachedMountInfo[] $newMounts */
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$newMounts = array_map(function (IMountPoint $mount) use ($user) {
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// filter out any storages which aren't scanned yet since we aren't interested in files from those storages (yet)
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if ($mount->getStorageRootId() === -1) {
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return null;
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} else {
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return new LazyStorageMountInfo($user, $mount);
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}
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}, $mounts);
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$newMounts = array_values(array_filter($newMounts));
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$cachedMounts = $this->getMountsForUser($user);
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$mountDiff = function (ICachedMountInfo $mount1, ICachedMountInfo $mount2) {
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// since we are only looking for mounts for a specific user comparing on root id is enough
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return $mount1->getRootId() - $mount2->getRootId();
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};
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/** @var ICachedMountInfo[] $addedMounts */
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$addedMounts = array_udiff($newMounts, $cachedMounts, $mountDiff);
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/** @var ICachedMountInfo[] $removedMounts */
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$removedMounts = array_udiff($cachedMounts, $newMounts, $mountDiff);
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$changedMounts = $this->findChangedMounts($newMounts, $cachedMounts);
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foreach ($addedMounts as $mount) {
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$this->addToCache($mount);
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$this->mountsForUsers[$user->getUID()][] = $mount;
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}
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foreach ($removedMounts as $mount) {
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$this->removeFromCache($mount);
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$index = array_search($mount, $this->mountsForUsers[$user->getUID()]);
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unset($this->mountsForUsers[$user->getUID()][$index]);
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}
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foreach ($changedMounts as $mount) {
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$this->updateCachedMount($mount);
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}
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}
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/**
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* @param ICachedMountInfo[] $newMounts
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* @param ICachedMountInfo[] $cachedMounts
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* @return ICachedMountInfo[]
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*/
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private function findChangedMounts(array $newMounts, array $cachedMounts) {
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$changed = [];
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foreach ($newMounts as $newMount) {
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foreach ($cachedMounts as $cachedMount) {
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if (
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$newMount->getRootId() === $cachedMount->getRootId() &&
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($newMount->getMountPoint() !== $cachedMount->getMountPoint() || $newMount->getMountId() !== $cachedMount->getMountId())
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) {
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$changed[] = $newMount;
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}
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}
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}
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return $changed;
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}
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private function addToCache(ICachedMountInfo $mount) {
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if ($mount->getStorageId() !== -1) {
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$this->connection->insertIfNotExist('*PREFIX*mounts', [
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'storage_id' => $mount->getStorageId(),
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'root_id' => $mount->getRootId(),
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'user_id' => $mount->getUser()->getUID(),
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'mount_point' => $mount->getMountPoint(),
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'mount_id' => $mount->getMountId()
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], ['root_id', 'user_id']);
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} else {
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// in some cases this is legitimate, like orphaned shares
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$this->logger->debug('Could not get storage info for mount at ' . $mount->getMountPoint());
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}
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}
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private function updateCachedMount(ICachedMountInfo $mount) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->update('mounts')
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->set('mount_point', $builder->createNamedParameter($mount->getMountPoint()))
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->set('mount_id', $builder->createNamedParameter($mount->getMountId(), IQueryBuilder::PARAM_INT))
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->where($builder->expr()->eq('user_id', $builder->createNamedParameter($mount->getUser()->getUID())))
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->andWhere($builder->expr()->eq('root_id', $builder->createNamedParameter($mount->getRootId(), IQueryBuilder::PARAM_INT)));
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$query->execute();
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}
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private function removeFromCache(ICachedMountInfo $mount) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->delete('mounts')
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->where($builder->expr()->eq('user_id', $builder->createNamedParameter($mount->getUser()->getUID())))
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->andWhere($builder->expr()->eq('root_id', $builder->createNamedParameter($mount->getRootId(), IQueryBuilder::PARAM_INT)));
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$query->execute();
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}
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private function dbRowToMountInfo(array $row) {
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$user = $this->userManager->get($row['user_id']);
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return new CachedMountInfo($user, (int)$row['storage_id'], (int)$row['root_id'], $row['mount_point'], $row['mount_id'], isset($row['path'])? $row['path']:'');
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}
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/**
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* @param IUser $user
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* @return ICachedMountInfo[]
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*/
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public function getMountsForUser(IUser $user) {
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if (!isset($this->mountsForUsers[$user->getUID()])) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->select('storage_id', 'root_id', 'user_id', 'mount_point', 'mount_id', 'f.path')
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->from('mounts', 'm')
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->innerJoin('m', 'filecache', 'f', $builder->expr()->eq('m.root_id', 'f.fileid'))
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->where($builder->expr()->eq('user_id', $builder->createPositionalParameter($user->getUID())));
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$rows = $query->execute()->fetchAll();
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$this->mountsForUsers[$user->getUID()] = array_map([$this, 'dbRowToMountInfo'], $rows);
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}
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return $this->mountsForUsers[$user->getUID()];
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}
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/**
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* @param int $numericStorageId
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* @return CachedMountInfo[]
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*/
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public function getMountsForStorageId($numericStorageId) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->select('storage_id', 'root_id', 'user_id', 'mount_point', 'mount_id', 'f.path')
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->from('mounts', 'm')
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->innerJoin('m', 'filecache', 'f' , $builder->expr()->eq('m.root_id', 'f.fileid'))
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->where($builder->expr()->eq('storage_id', $builder->createPositionalParameter($numericStorageId, IQueryBuilder::PARAM_INT)));
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$rows = $query->execute()->fetchAll();
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return array_map([$this, 'dbRowToMountInfo'], $rows);
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}
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/**
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* @param int $rootFileId
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* @return CachedMountInfo[]
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*/
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public function getMountsForRootId($rootFileId) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->select('storage_id', 'root_id', 'user_id', 'mount_point', 'mount_id', 'f.path')
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->from('mounts', 'm')
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->innerJoin('m', 'filecache', 'f', $builder->expr()->eq('m.root_id', 'f.fileid'))
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->where($builder->expr()->eq('root_id', $builder->createPositionalParameter($rootFileId, IQueryBuilder::PARAM_INT)));
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$rows = $query->execute()->fetchAll();
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return array_map([$this, 'dbRowToMountInfo'], $rows);
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}
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/**
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* @param $fileId
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* @return array
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* @throws \OCP\Files\NotFoundException
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*/
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private function getCacheInfoFromFileId($fileId) {
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if (!isset($this->cacheInfoCache[$fileId])) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->select('storage', 'path', 'mimetype')
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->from('filecache')
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->where($builder->expr()->eq('fileid', $builder->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
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$row = $query->execute()->fetch();
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if (is_array($row)) {
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$this->cacheInfoCache[$fileId] = [
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(int)$row['storage'],
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$row['path'],
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(int)$row['mimetype']
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];
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} else {
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throw new NotFoundException('File with id "' . $fileId . '" not found');
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}
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}
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return $this->cacheInfoCache[$fileId];
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}
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/**
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* @param int $fileId
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* @return ICachedMountInfo[]
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* @since 9.0.0
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*/
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public function getMountsForFileId($fileId) {
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try {
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list($storageId, $internalPath) = $this->getCacheInfoFromFileId($fileId);
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} catch (NotFoundException $e) {
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return [];
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}
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$mountsForStorage = $this->getMountsForStorageId($storageId);
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// filter mounts that are from the same storage but a different directory
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return array_filter($mountsForStorage, function (ICachedMountInfo $mount) use ($internalPath, $fileId) {
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if ($fileId === $mount->getRootId()) {
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return true;
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}
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$internalMountPath = $mount->getRootInternalPath();
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return $internalMountPath === '' || substr($internalPath, 0, strlen($internalMountPath) + 1) === $internalMountPath . '/';
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});
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}
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/**
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* Remove all cached mounts for a user
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*
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* @param IUser $user
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*/
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public function removeUserMounts(IUser $user) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->delete('mounts')
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->where($builder->expr()->eq('user_id', $builder->createNamedParameter($user->getUID())));
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$query->execute();
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}
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public function removeUserStorageMount($storageId, $userId) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->delete('mounts')
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->where($builder->expr()->eq('user_id', $builder->createNamedParameter($userId)))
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->andWhere($builder->expr()->eq('storage_id', $builder->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)));
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$query->execute();
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}
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public function remoteStorageMounts($storageId) {
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$builder = $this->connection->getQueryBuilder();
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$query = $builder->delete('mounts')
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->where($builder->expr()->eq('storage_id', $builder->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)));
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$query->execute();
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}
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}
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