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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Andreas Fischer <bantu@owncloud.com>
* @author Artem Kochnev <MrJeos@gmail.com>
* @author Björn Schießle <bjoern@schiessle.org>
* @author Florin Peter <github@florin-peter.de>
* @author Frédéric Fortier <frederic.fortier@oronospolytechnique.com>
* @author Jens-Christian Fischer <jens-christian.fischer@switch.ch>
* @author Joas Schilling <coding@schilljs.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @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 OC\Files\Cache;
use OCP\DB\QueryBuilder\IQueryBuilder;
use Doctrine\DBAL\Driver\Statement;
use OCP\Files\Cache\ICache;
use OCP\Files\Cache\ICacheEntry;
use \OCP\Files\IMimeTypeLoader;
use OCP\Files\Search\ISearchQuery;
use OCP\IDBConnection;
/**
* Metadata cache for a storage
*
* The cache stores the metadata for all files and folders in a storage and is kept up to date trough the following mechanisms:
*
* - Scanner: scans the storage and updates the cache where needed
* - Watcher: checks for changes made to the filesystem outside of the ownCloud instance and rescans files and folder when a change is detected
* - Updater: listens to changes made to the filesystem inside of the ownCloud instance and updates the cache where needed
* - ChangePropagator: updates the mtime and etags of parent folders whenever a change to the cache is made to the cache by the updater
*/
class Cache implements ICache {
use MoveFromCacheTrait {
MoveFromCacheTrait::moveFromCache as moveFromCacheFallback;
}
/**
* @var array partial data for the cache
*/
protected $partial = array();
/**
* @var string
*/
protected $storageId;
/**
* @var Storage $storageCache
*/
protected $storageCache;
/** @var IMimeTypeLoader */
protected $mimetypeLoader;
/**
* @var IDBConnection
*/
protected $connection;
/** @var QuerySearchHelper */
protected $querySearchHelper;
/**
* @param \OC\Files\Storage\Storage|string $storage
*/
public function __construct($storage) {
if ($storage instanceof \OC\Files\Storage\Storage) {
$this->storageId = $storage->getId();
} else {
$this->storageId = $storage;
}
if (strlen($this->storageId) > 64) {
$this->storageId = md5($this->storageId);
}
$this->storageCache = new Storage($storage);
$this->mimetypeLoader = \OC::$server->getMimeTypeLoader();
$this->connection = \OC::$server->getDatabaseConnection();
$this->querySearchHelper = new QuerySearchHelper($this->mimetypeLoader);
}
/**
* Get the numeric storage id for this cache's storage
*
* @return int
*/
public function getNumericStorageId() {
return $this->storageCache->getNumericId();
}
/**
* get the stored metadata of a file or folder
*
* @param string | int $file either the path of a file or folder or the file id for a file or folder
* @return ICacheEntry|false the cache entry as array of false if the file is not found in the cache
*/
public function get($file) {
if (is_string($file) or $file == '') {
// normalize file
$file = $this->normalize($file);
$where = 'WHERE `storage` = ? AND `path_hash` = ?';
$params = array($this->getNumericStorageId(), md5($file));
} else { //file id
$where = 'WHERE `fileid` = ?';
$params = array($file);
}
$sql = 'SELECT `fileid`, `storage`, `path`, `path_hash`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`,
`storage_mtime`, `encrypted`, `etag`, `permissions`, `checksum`
FROM `*PREFIX*filecache` ' . $where;
$result = $this->connection->executeQuery($sql, $params);
$data = $result->fetch();
//FIXME hide this HACK in the next database layer, or just use doctrine and get rid of MDB2 and PDO
//PDO returns false, MDB2 returns null, oracle always uses MDB2, so convert null to false
if ($data === null) {
$data = false;
}
//merge partial data
if (!$data and is_string($file)) {
if (isset($this->partial[$file])) {
$data = $this->partial[$file];
}
return $data;
} else {
return self::cacheEntryFromData($data, $this->mimetypeLoader);
}
}
/**
* Create a CacheEntry from database row
*
* @param array $data
* @param IMimeTypeLoader $mimetypeLoader
* @return CacheEntry
*/
public static function cacheEntryFromData($data, IMimeTypeLoader $mimetypeLoader) {
//fix types
$data['fileid'] = (int)$data['fileid'];
$data['parent'] = (int)$data['parent'];
$data['size'] = 0 + $data['size'];
$data['mtime'] = (int)$data['mtime'];
$data['storage_mtime'] = (int)$data['storage_mtime'];
$data['encryptedVersion'] = (int)$data['encrypted'];
$data['encrypted'] = (bool)$data['encrypted'];
$data['storage_id'] = $data['storage'];
$data['storage'] = (int)$data['storage'];
$data['mimetype'] = $mimetypeLoader->getMimetypeById($data['mimetype']);
$data['mimepart'] = $mimetypeLoader->getMimetypeById($data['mimepart']);
if ($data['storage_mtime'] == 0) {
$data['storage_mtime'] = $data['mtime'];
}
$data['permissions'] = (int)$data['permissions'];
return new CacheEntry($data);
}
/**
* get the metadata of all files stored in $folder
*
* @param string $folder
* @return ICacheEntry[]
*/
public function getFolderContents($folder) {
$fileId = $this->getId($folder);
return $this->getFolderContentsById($fileId);
}
/**
* get the metadata of all files stored in $folder
*
* @param int $fileId the file id of the folder
* @return ICacheEntry[]
*/
public function getFolderContentsById($fileId) {
if ($fileId > -1) {
$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`,
`storage_mtime`, `encrypted`, `etag`, `permissions`, `checksum`
FROM `*PREFIX*filecache` WHERE `parent` = ? ORDER BY `name` ASC';
$result = $this->connection->executeQuery($sql, [$fileId]);
$files = $result->fetchAll();
return array_map(function (array $data) {
return self::cacheEntryFromData($data, $this->mimetypeLoader);;
}, $files);
} else {
return array();
}
}
/**
* insert or update meta data for a file or folder
*
* @param string $file
* @param array $data
*
* @return int file id
* @throws \RuntimeException
*/
public function put($file, array $data) {
if (($id = $this->getId($file)) > -1) {
$this->update($id, $data);
return $id;
} else {
return $this->insert($file, $data);
}
}
/**
* insert meta data for a new file or folder
*
* @param string $file
* @param array $data
*
* @return int file id
* @throws \RuntimeException
*/
public function insert($file, array $data) {
// normalize file
$file = $this->normalize($file);
if (isset($this->partial[$file])) { //add any saved partial data
$data = array_merge($this->partial[$file], $data);
unset($this->partial[$file]);
}
$requiredFields = array('size', 'mtime', 'mimetype');
foreach ($requiredFields as $field) {
if (!isset($data[$field])) { //data not complete save as partial and return
$this->partial[$file] = $data;
return -1;
}
}
$data['path'] = $file;
$data['parent'] = $this->getParentId($file);
$data['name'] = basename($file);
list($queryParts, $params) = $this->buildParts($data);
$queryParts[] = '`storage`';
$params[] = $this->getNumericStorageId();
$queryParts = array_map(function ($item) {
return trim($item, "`");
}, $queryParts);
$values = array_combine($queryParts, $params);
if (\OC::$server->getDatabaseConnection()->insertIfNotExist('*PREFIX*filecache', $values, [
'storage',
'path_hash',
])
) {
return (int)$this->connection->lastInsertId('*PREFIX*filecache');
}
// The file was created in the mean time
if (($id = $this->getId($file)) > -1) {
$this->update($id, $data);
return $id;
} else {
throw new \RuntimeException('File entry could not be inserted with insertIfNotExist() but could also not be selected with getId() in order to perform an update. Please try again.');
}
}
/**
* update the metadata of an existing file or folder in the cache
*
* @param int $id the fileid of the existing file or folder
* @param array $data [$key => $value] the metadata to update, only the fields provided in the array will be updated, non-provided values will remain unchanged
*/
public function update($id, array $data) {
if (isset($data['path'])) {
// normalize path
$data['path'] = $this->normalize($data['path']);
}
if (isset($data['name'])) {
// normalize path
$data['name'] = $this->normalize($data['name']);
}
list($queryParts, $params) = $this->buildParts($data);
// duplicate $params because we need the parts twice in the SQL statement
// once for the SET part, once in the WHERE clause
$params = array_merge($params, $params);
$params[] = $id;
// don't update if the data we try to set is the same as the one in the record
// some databases (Postgres) don't like superfluous updates
$sql = 'UPDATE `*PREFIX*filecache` SET ' . implode(' = ?, ', $queryParts) . '=? ' .
'WHERE (' .
implode(' <> ? OR ', $queryParts) . ' <> ? OR ' .
implode(' IS NULL OR ', $queryParts) . ' IS NULL' .
') AND `fileid` = ? ';
$this->connection->executeQuery($sql, $params);
}
/**
* extract query parts and params array from data array
*
* @param array $data
* @return array [$queryParts, $params]
* $queryParts: string[], the (escaped) column names to be set in the query
* $params: mixed[], the new values for the columns, to be passed as params to the query
*/
protected function buildParts(array $data) {
$fields = array(
'path', 'parent', 'name', 'mimetype', 'size', 'mtime', 'storage_mtime', 'encrypted',
'etag', 'permissions', 'checksum', 'storage');
$doNotCopyStorageMTime = false;
if (array_key_exists('mtime', $data) && $data['mtime'] === null) {
// this horrific magic tells it to not copy storage_mtime to mtime
unset($data['mtime']);
$doNotCopyStorageMTime = true;
}
$params = array();
$queryParts = array();
foreach ($data as $name => $value) {
if (array_search($name, $fields) !== false) {
if ($name === 'path') {
$params[] = md5($value);
$queryParts[] = '`path_hash`';
} elseif ($name === 'mimetype') {
$params[] = $this->mimetypeLoader->getId(substr($value, 0, strpos($value, '/')));
$queryParts[] = '`mimepart`';
$value = $this->mimetypeLoader->getId($value);
} elseif ($name === 'storage_mtime') {
if (!$doNotCopyStorageMTime && !isset($data['mtime'])) {
$params[] = $value;
$queryParts[] = '`mtime`';
}
} elseif ($name === 'encrypted') {
if (isset($data['encryptedVersion'])) {
$value = $data['encryptedVersion'];
} else {
// Boolean to integer conversion
$value = $value ? 1 : 0;
}
}
$params[] = $value;
$queryParts[] = '`' . $name . '`';
}
}
return array($queryParts, $params);
}
/**
* get the file id for a file
*
* A file id is a numeric id for a file or folder that's unique within an owncloud instance which stays the same for the lifetime of a file
*
* File ids are easiest way for apps to store references to a file since unlike paths they are not affected by renames or sharing
*
* @param string $file
* @return int
*/
public function getId($file) {
// normalize file
$file = $this->normalize($file);
$pathHash = md5($file);
$sql = 'SELECT `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?';
$result = $this->connection->executeQuery($sql, array($this->getNumericStorageId(), $pathHash));
if ($row = $result->fetch()) {
return $row['fileid'];
} else {
return -1;
}
}
/**
* get the id of the parent folder of a file
*
* @param string $file
* @return int
*/
public function getParentId($file) {
if ($file === '') {
return -1;
} else {
$parent = $this->getParentPath($file);
return (int)$this->getId($parent);
}
}
private function getParentPath($path) {
$parent = dirname($path);
if ($parent === '.') {
$parent = '';
}
return $parent;
}
/**
* check if a file is available in the cache
*
* @param string $file
* @return bool
*/
public function inCache($file) {
return $this->getId($file) != -1;
}
/**
* remove a file or folder from the cache
*
* when removing a folder from the cache all files and folders inside the folder will be removed as well
*
* @param string $file
*/
public function remove($file) {
$entry = $this->get($file);
$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `fileid` = ?';
$this->connection->executeQuery($sql, array($entry['fileid']));
if ($entry['mimetype'] === 'httpd/unix-directory') {
$this->removeChildren($entry);
}
}
/**
* Get all sub folders of a folder
*
* @param array $entry the cache entry of the folder to get the subfolders for
* @return array[] the cache entries for the subfolders
*/
private function getSubFolders($entry) {
$children = $this->getFolderContentsById($entry['fileid']);
return array_filter($children, function ($child) {
return $child['mimetype'] === 'httpd/unix-directory';
});
}
/**
* Recursively remove all children of a folder
*
* @param array $entry the cache entry of the folder to remove the children of
* @throws \OC\DatabaseException
*/
private function removeChildren($entry) {
$subFolders = $this->getSubFolders($entry);
foreach ($subFolders as $folder) {
$this->removeChildren($folder);
}
$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `parent` = ?';
$this->connection->executeQuery($sql, array($entry['fileid']));
}
/**
* Move a file or folder in the cache
*
* @param string $source
* @param string $target
*/
public function move($source, $target) {
$this->moveFromCache($this, $source, $target);
}
/**
* Get the storage id and path needed for a move
*
* @param string $path
* @return array [$storageId, $internalPath]
*/
protected function getMoveInfo($path) {
return [$this->getNumericStorageId(), $path];
}
/**
* Move a file or folder in the cache
*
* @param \OCP\Files\Cache\ICache $sourceCache
* @param string $sourcePath
* @param string $targetPath
* @throws \OC\DatabaseException
* @throws \Exception if the given storages have an invalid id
* @suppress SqlInjectionChecker
*/
public function moveFromCache(ICache $sourceCache, $sourcePath, $targetPath) {
if ($sourceCache instanceof Cache) {
// normalize source and target
$sourcePath = $this->normalize($sourcePath);
$targetPath = $this->normalize($targetPath);
$sourceData = $sourceCache->get($sourcePath);
$sourceId = $sourceData['fileid'];
$newParentId = $this->getParentId($targetPath);
list($sourceStorageId, $sourcePath) = $sourceCache->getMoveInfo($sourcePath);
list($targetStorageId, $targetPath) = $this->getMoveInfo($targetPath);
if (is_null($sourceStorageId) || $sourceStorageId === false) {
throw new \Exception('Invalid source storage id: ' . $sourceStorageId);
}
if (is_null($targetStorageId) || $targetStorageId === false) {
throw new \Exception('Invalid target storage id: ' . $targetStorageId);
}
$this->connection->beginTransaction();
if ($sourceData['mimetype'] === 'httpd/unix-directory') {
//update all child entries
$sourceLength = mb_strlen($sourcePath);
$query = $this->connection->getQueryBuilder();
$fun = $query->func();
$newPathFunction = $fun->concat(
$query->createNamedParameter($targetPath),
$fun->substring('path', $query->createNamedParameter($sourceLength + 1, IQueryBuilder::PARAM_INT))// +1 for the leading slash
);
$query->update('filecache')
->set('storage', $query->createNamedParameter($targetStorageId, IQueryBuilder::PARAM_INT))
->set('path_hash', $fun->md5($newPathFunction))
->set('path', $newPathFunction)
->where($query->expr()->eq('storage', $query->createNamedParameter($sourceStorageId, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->like('path', $query->createNamedParameter($this->connection->escapeLikeParameter($sourcePath) . '/%')));
try {
$query->execute();
} catch (\OC\DatabaseException $e) {
$this->connection->rollBack();
throw $e;
}
}
$sql = 'UPDATE `*PREFIX*filecache` SET `storage` = ?, `path` = ?, `path_hash` = ?, `name` = ?, `parent` = ? WHERE `fileid` = ?';
$this->connection->executeQuery($sql, array($targetStorageId, $targetPath, md5($targetPath), basename($targetPath), $newParentId, $sourceId));
$this->connection->commit();
} else {
$this->moveFromCacheFallback($sourceCache, $sourcePath, $targetPath);
}
}
/**
* remove all entries for files that are stored on the storage from the cache
*/
public function clear() {
$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `storage` = ?';
$this->connection->executeQuery($sql, array($this->getNumericStorageId()));
$sql = 'DELETE FROM `*PREFIX*storages` WHERE `id` = ?';
$this->connection->executeQuery($sql, array($this->storageId));
}
/**
* Get the scan status of a file
*
* - Cache::NOT_FOUND: File is not in the cache
* - Cache::PARTIAL: File is not stored in the cache but some incomplete data is known
* - Cache::SHALLOW: The folder and it's direct children are in the cache but not all sub folders are fully scanned
* - Cache::COMPLETE: The file or folder, with all it's children) are fully scanned
*
* @param string $file
*
* @return int Cache::NOT_FOUND, Cache::PARTIAL, Cache::SHALLOW or Cache::COMPLETE
*/
public function getStatus($file) {
// normalize file
$file = $this->normalize($file);
$pathHash = md5($file);
$sql = 'SELECT `size` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?';
$result = $this->connection->executeQuery($sql, array($this->getNumericStorageId(), $pathHash));
if ($row = $result->fetch()) {
if ((int)$row['size'] === -1) {
return self::SHALLOW;
} else {
return self::COMPLETE;
}
} else {
if (isset($this->partial[$file])) {
return self::PARTIAL;
} else {
return self::NOT_FOUND;
}
}
}
/**
* search for files matching $pattern
*
* @param string $pattern the search pattern using SQL search syntax (e.g. '%searchstring%')
* @return ICacheEntry[] an array of cache entries where the name matches the search pattern
*/
public function search($pattern) {
// normalize pattern
$pattern = $this->normalize($pattern);
if ($pattern === '%%') {
return [];
}
$sql = '
SELECT `fileid`, `storage`, `path`, `parent`, `name`,
`mimetype`, `storage_mtime`, `mimepart`, `size`, `mtime`,
`encrypted`, `etag`, `permissions`, `checksum`
FROM `*PREFIX*filecache`
WHERE `storage` = ? AND `name` ILIKE ?';
$result = $this->connection->executeQuery($sql,
[$this->getNumericStorageId(), $pattern]
);
return $this->searchResultToCacheEntries($result);
}
/**
* @param Statement $result
* @return CacheEntry[]
*/
private function searchResultToCacheEntries(Statement $result) {
$files = $result->fetchAll();
return array_map(function (array $data) {
return self::cacheEntryFromData($data, $this->mimetypeLoader);
}, $files);
}
/**
* search for files by mimetype
*
* @param string $mimetype either a full mimetype to search ('text/plain') or only the first part of a mimetype ('image')
* where it will search for all mimetypes in the group ('image/*')
* @return ICacheEntry[] an array of cache entries where the mimetype matches the search
*/
public function searchByMime($mimetype) {
if (strpos($mimetype, '/')) {
$where = '`mimetype` = ?';
} else {
$where = '`mimepart` = ?';
}
$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `storage_mtime`, `mtime`, `encrypted`, `etag`, `permissions`, `checksum`
FROM `*PREFIX*filecache` WHERE ' . $where . ' AND `storage` = ?';
$mimetype = $this->mimetypeLoader->getId($mimetype);
$result = $this->connection->executeQuery($sql, array($mimetype, $this->getNumericStorageId()));
return $this->searchResultToCacheEntries($result);
}
public function searchQuery(ISearchQuery $searchQuery) {
$builder = \OC::$server->getDatabaseConnection()->getQueryBuilder();
$query = $builder->select(['fileid', 'storage', 'path', 'parent', 'name', 'mimetype', 'mimepart', 'size', 'mtime', 'storage_mtime', 'encrypted', 'etag', 'permissions', 'checksum'])
->from('filecache', 'file');
$query->where($builder->expr()->eq('storage', $builder->createNamedParameter($this->getNumericStorageId())));
if ($this->querySearchHelper->shouldJoinTags($searchQuery->getSearchOperation())) {
$query
->innerJoin('file', 'vcategory_to_object', 'tagmap', $builder->expr()->eq('file.fileid', 'tagmap.objid'))
->innerJoin('tagmap', 'vcategory', 'tag', $builder->expr()->andX(
$builder->expr()->eq('tagmap.type', 'tag.type'),
$builder->expr()->eq('tagmap.categoryid', 'tag.id')
))
->andWhere($builder->expr()->eq('tag.type', $builder->createNamedParameter('files')))
->andWhere($builder->expr()->eq('tag.uid', $builder->createNamedParameter($searchQuery->getUser()->getUID())));
}
$query->andWhere($this->querySearchHelper->searchOperatorToDBExpr($builder, $searchQuery->getSearchOperation()));
$this->querySearchHelper->addSearchOrdersToQuery($query, $searchQuery->getOrder());
if ($searchQuery->getLimit()) {
$query->setMaxResults($searchQuery->getLimit());
}
if ($searchQuery->getOffset()) {
$query->setFirstResult($searchQuery->getOffset());
}
$result = $query->execute();
return $this->searchResultToCacheEntries($result);
}
/**
* Search for files by tag of a given users.
*
* Note that every user can tag files differently.
*
* @param string|int $tag name or tag id
* @param string $userId owner of the tags
* @return ICacheEntry[] file data
*/
public function searchByTag($tag, $userId) {
$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, ' .
'`mimetype`, `mimepart`, `size`, `mtime`, `storage_mtime`, ' .
'`encrypted`, `etag`, `permissions`, `checksum` ' .
'FROM `*PREFIX*filecache` `file`, ' .
'`*PREFIX*vcategory_to_object` `tagmap`, ' .
'`*PREFIX*vcategory` `tag` ' .
// JOIN filecache to vcategory_to_object
'WHERE `file`.`fileid` = `tagmap`.`objid` ' .
// JOIN vcategory_to_object to vcategory
'AND `tagmap`.`type` = `tag`.`type` ' .
'AND `tagmap`.`categoryid` = `tag`.`id` ' .
// conditions
'AND `file`.`storage` = ? ' .
'AND `tag`.`type` = \'files\' ' .
'AND `tag`.`uid` = ? ';
if (is_int($tag)) {
$sql .= 'AND `tag`.`id` = ? ';
} else {
$sql .= 'AND `tag`.`category` = ? ';
}
$result = $this->connection->executeQuery(
$sql,
[
$this->getNumericStorageId(),
$userId,
$tag
]
);
$files = $result->fetchAll();
return array_map(function (array $data) {
return self::cacheEntryFromData($data, $this->mimetypeLoader);
}, $files);
}
/**
* Re-calculate the folder size and the size of all parent folders
*
* @param string|boolean $path
* @param array $data (optional) meta data of the folder
*/
public function correctFolderSize($path, $data = null) {
$this->calculateFolderSize($path, $data);
if ($path !== '') {
$parent = dirname($path);
if ($parent === '.' or $parent === '/') {
$parent = '';
}
$this->correctFolderSize($parent);
}
}
/**
* calculate the size of a folder and set it in the cache
*
* @param string $path
* @param array $entry (optional) meta data of the folder
* @return int
*/
public function calculateFolderSize($path, $entry = null) {
$totalSize = 0;
if (is_null($entry) or !isset($entry['fileid'])) {
$entry = $this->get($path);
}
if (isset($entry['mimetype']) && $entry['mimetype'] === 'httpd/unix-directory') {
$id = $entry['fileid'];
$sql = 'SELECT SUM(`size`) AS f1, MIN(`size`) AS f2 ' .
'FROM `*PREFIX*filecache` ' .
'WHERE `parent` = ? AND `storage` = ?';
$result = $this->connection->executeQuery($sql, array($id, $this->getNumericStorageId()));
if ($row = $result->fetch()) {
$result->closeCursor();
list($sum, $min) = array_values($row);
$sum = 0 + $sum;
$min = 0 + $min;
if ($min === -1) {
$totalSize = $min;
} else {
$totalSize = $sum;
}
$update = array();
if ($entry['size'] !== $totalSize) {
$update['size'] = $totalSize;
}
if (count($update) > 0) {
$this->update($id, $update);
}
} else {
$result->closeCursor();
}
}
return $totalSize;
}
/**
* get all file ids on the files on the storage
*
* @return int[]
*/
public function getAll() {
$sql = 'SELECT `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ?';
$result = $this->connection->executeQuery($sql, array($this->getNumericStorageId()));
$ids = array();
while ($row = $result->fetch()) {
$ids[] = $row['fileid'];
}
return $ids;
}
/**
* find a folder in the cache which has not been fully scanned
*
* If multiple incomplete folders are in the cache, the one with the highest id will be returned,
* use the one with the highest id gives the best result with the background scanner, since that is most
* likely the folder where we stopped scanning previously
*
* @return string|bool the path of the folder or false when no folder matched
*/
public function getIncomplete() {
$query = $this->connection->prepare('SELECT `path` FROM `*PREFIX*filecache`'
. ' WHERE `storage` = ? AND `size` = -1 ORDER BY `fileid` DESC', 1);
$query->execute([$this->getNumericStorageId()]);
if ($row = $query->fetch()) {
return $row['path'];
} else {
return false;
}
}
/**
* get the path of a file on this storage by it's file id
*
* @param int $id the file id of the file or folder to search
* @return string|null the path of the file (relative to the storage) or null if a file with the given id does not exists within this cache
*/
public function getPathById($id) {
$sql = 'SELECT `path` FROM `*PREFIX*filecache` WHERE `fileid` = ? AND `storage` = ?';
$result = $this->connection->executeQuery($sql, array($id, $this->getNumericStorageId()));
if ($row = $result->fetch()) {
// Oracle stores empty strings as null...
if ($row['path'] === null) {
return '';
}
return $row['path'];
} else {
return null;
}
}
/**
* get the storage id of the storage for a file and the internal path of the file
* unlike getPathById this does not limit the search to files on this storage and
* instead does a global search in the cache table
*
* @param int $id
* @deprecated use getPathById() instead
* @return array first element holding the storage id, second the path
*/
static public function getById($id) {
$connection = \OC::$server->getDatabaseConnection();
$sql = 'SELECT `storage`, `path` FROM `*PREFIX*filecache` WHERE `fileid` = ?';
$result = $connection->executeQuery($sql, array($id));
if ($row = $result->fetch()) {
$numericId = $row['storage'];
$path = $row['path'];
} else {
return null;
}
if ($id = Storage::getStorageId($numericId)) {
return array($id, $path);
} else {
return null;
}
}
/**
* normalize the given path
*
* @param string $path
* @return string
*/
public function normalize($path) {
return trim(\OC_Util::normalizeUnicode($path), '/');
}
}