651 lines
18 KiB
PHP
651 lines
18 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Files\Cache;
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/**
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* Metadata cache for the filesystem
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*
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* don't use this class directly if you need to get metadata, use \OC\Files\Filesystem::getFileInfo instead
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*/
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class Cache {
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const NOT_FOUND = 0;
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const PARTIAL = 1; //only partial data available, file not cached in the database
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const SHALLOW = 2; //folder in cache, but not all child files are completely scanned
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const COMPLETE = 3;
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/**
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* @var array partial data for the cache
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*/
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protected $partial = array();
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/**
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* @var string
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*/
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protected $storageId;
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/**
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* @var Storage $storageCache
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*/
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protected $storageCache;
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protected static $mimetypeIds = array();
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protected static $mimetypes = array();
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/**
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* @param \OC\Files\Storage\Storage|string $storage
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*/
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public function __construct($storage) {
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if ($storage instanceof \OC\Files\Storage\Storage) {
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$this->storageId = $storage->getId();
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} else {
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$this->storageId = $storage;
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}
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if (strlen($this->storageId) > 64) {
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$this->storageId = md5($this->storageId);
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}
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$this->storageCache = new Storage($storage);
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}
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public function getNumericStorageId() {
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return $this->storageCache->getNumericId();
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}
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/**
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* normalize mimetypes
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*
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* @param string $mime
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* @return int
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*/
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public function getMimetypeId($mime) {
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if (empty($mime)) {
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// Can not insert empty string into Oracle NOT NULL column.
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$mime = 'application/octet-stream';
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}
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if (empty(self::$mimetypeIds)) {
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$this->loadMimetypes();
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}
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if (!isset(self::$mimetypeIds[$mime])) {
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try{
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$result = \OC_DB::executeAudited('INSERT INTO `*PREFIX*mimetypes`(`mimetype`) VALUES(?)', array($mime));
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self::$mimetypeIds[$mime] = \OC_DB::insertid('*PREFIX*mimetypes');
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self::$mimetypes[self::$mimetypeIds[$mime]] = $mime;
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}
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catch (\Doctrine\DBAL\DBALException $e){
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\OC_Log::write('core', 'Exception during mimetype insertion: ' . $e->getmessage(), \OC_Log::DEBUG);
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return -1;
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}
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}
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return self::$mimetypeIds[$mime];
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}
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public function getMimetype($id) {
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if (empty(self::$mimetypes)) {
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$this->loadMimetypes();
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}
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return isset(self::$mimetypes[$id]) ? self::$mimetypes[$id] : null;
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}
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public function loadMimetypes(){
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$result = \OC_DB::executeAudited('SELECT `id`, `mimetype` FROM `*PREFIX*mimetypes`', array());
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if ($result) {
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while ($row = $result->fetchRow()) {
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self::$mimetypeIds[$row['mimetype']] = $row['id'];
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self::$mimetypes[$row['id']] = $row['mimetype'];
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}
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}
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}
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/**
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* get the stored metadata of a file or folder
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*
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* @param string/int $file
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* @return array|false
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*/
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public function get($file) {
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if (is_string($file) or $file == '') {
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// normalize file
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$file = $this->normalize($file);
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$where = 'WHERE `storage` = ? AND `path_hash` = ?';
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$params = array($this->getNumericStorageId(), md5($file));
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} else { //file id
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$where = 'WHERE `fileid` = ?';
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$params = array($file);
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}
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$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`,
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`storage_mtime`, `encrypted`, `unencrypted_size`, `etag`, `permissions`
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FROM `*PREFIX*filecache` ' . $where;
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$result = \OC_DB::executeAudited($sql, $params);
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$data = $result->fetchRow();
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//FIXME hide this HACK in the next database layer, or just use doctrine and get rid of MDB2 and PDO
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//PDO returns false, MDB2 returns null, oracle always uses MDB2, so convert null to false
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if ($data === null) {
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$data = false;
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}
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//merge partial data
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if (!$data and is_string($file)) {
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if (isset($this->partial[$file])) {
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$data = $this->partial[$file];
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}
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} else {
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//fix types
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$data['fileid'] = (int)$data['fileid'];
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$data['size'] = 0 + $data['size'];
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$data['mtime'] = (int)$data['mtime'];
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$data['storage_mtime'] = (int)$data['storage_mtime'];
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$data['encrypted'] = (bool)$data['encrypted'];
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$data['unencrypted_size'] = 0 + $data['unencrypted_size'];
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$data['storage'] = $this->storageId;
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$data['mimetype'] = $this->getMimetype($data['mimetype']);
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$data['mimepart'] = $this->getMimetype($data['mimepart']);
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if ($data['storage_mtime'] == 0) {
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$data['storage_mtime'] = $data['mtime'];
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}
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$data['permissions'] = (int)$data['permissions'];
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}
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return $data;
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}
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/**
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* get the metadata of all files stored in $folder
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*
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* @param string $folder
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* @return array
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*/
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public function getFolderContents($folder) {
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$fileId = $this->getId($folder);
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return $this->getFolderContentsById($fileId);
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}
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/**
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* get the metadata of all files stored in $folder
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*
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* @param int $fileId the file id of the folder
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* @return array
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*/
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public function getFolderContentsById($fileId) {
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if ($fileId > -1) {
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$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`,
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`storage_mtime`, `encrypted`, `unencrypted_size`, `etag`, `permissions`
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FROM `*PREFIX*filecache` WHERE `parent` = ? ORDER BY `name` ASC';
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$result = \OC_DB::executeAudited($sql,array($fileId));
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$files = $result->fetchAll();
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foreach ($files as &$file) {
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$file['mimetype'] = $this->getMimetype($file['mimetype']);
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$file['mimepart'] = $this->getMimetype($file['mimepart']);
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if ($file['storage_mtime'] == 0) {
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$file['storage_mtime'] = $file['mtime'];
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}
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if ($file['encrypted'] or ($file['unencrypted_size'] > 0 and $file['mimetype'] === 'httpd/unix-directory')) {
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$file['encrypted_size'] = $file['size'];
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$file['size'] = $file['unencrypted_size'];
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}
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$file['permissions'] = (int)$file['permissions'];
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}
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return $files;
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} else {
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return array();
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}
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}
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/**
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* store meta data for a file or folder
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*
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* @param string $file
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* @param array $data
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*
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* @return int file id
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*/
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public function put($file, array $data) {
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if (($id = $this->getId($file)) > -1) {
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$this->update($id, $data);
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return $id;
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} else {
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// normalize file
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$file = $this->normalize($file);
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if (isset($this->partial[$file])) { //add any saved partial data
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$data = array_merge($this->partial[$file], $data);
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unset($this->partial[$file]);
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}
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$requiredFields = array('size', 'mtime', 'mimetype');
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foreach ($requiredFields as $field) {
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if (!isset($data[$field])) { //data not complete save as partial and return
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$this->partial[$file] = $data;
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return -1;
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}
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}
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$data['path'] = $file;
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$data['parent'] = $this->getParentId($file);
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$data['name'] = \OC_Util::basename($file);
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list($queryParts, $params) = $this->buildParts($data);
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$queryParts[] = '`storage`';
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$params[] = $this->getNumericStorageId();
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$valuesPlaceholder = array_fill(0, count($queryParts), '?');
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$sql = 'INSERT INTO `*PREFIX*filecache` (' . implode(', ', $queryParts) . ')'
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. ' VALUES (' . implode(', ', $valuesPlaceholder) . ')';
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\OC_DB::executeAudited($sql, $params);
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return (int)\OC_DB::insertid('*PREFIX*filecache');
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}
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}
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/**
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* update the metadata in the cache
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*
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* @param int $id
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* @param array $data
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*/
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public function update($id, array $data) {
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if(isset($data['path'])) {
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// normalize path
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$data['path'] = $this->normalize($data['path']);
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}
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if(isset($data['name'])) {
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// normalize path
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$data['name'] = $this->normalize($data['name']);
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}
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list($queryParts, $params) = $this->buildParts($data);
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$params[] = $id;
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$sql = 'UPDATE `*PREFIX*filecache` SET ' . implode(' = ?, ', $queryParts) . '=? WHERE `fileid` = ?';
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\OC_DB::executeAudited($sql, $params);
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}
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/**
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* extract query parts and params array from data array
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*
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* @param array $data
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* @return array
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*/
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function buildParts(array $data) {
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$fields = array(
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'path', 'parent', 'name', 'mimetype', 'size', 'mtime', 'storage_mtime', 'encrypted', 'unencrypted_size',
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'etag', 'permissions');
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$params = array();
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$queryParts = array();
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foreach ($data as $name => $value) {
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if (array_search($name, $fields) !== false) {
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if ($name === 'path') {
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$params[] = md5($value);
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$queryParts[] = '`path_hash`';
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} elseif ($name === 'mimetype') {
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$params[] = $this->getMimetypeId(substr($value, 0, strpos($value, '/')));
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$queryParts[] = '`mimepart`';
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$value = $this->getMimetypeId($value);
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} elseif ($name === 'storage_mtime') {
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if (!isset($data['mtime'])) {
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$params[] = $value;
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$queryParts[] = '`mtime`';
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}
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} elseif ($name === 'encrypted') {
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// Boolean to integer conversion
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$value = $value ? 1 : 0;
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}
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$params[] = $value;
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$queryParts[] = '`' . $name . '`';
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}
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}
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return array($queryParts, $params);
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}
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/**
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* get the file id for a file
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*
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* @param string $file
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* @return int
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*/
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public function getId($file) {
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// normalize file
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$file = $this->normalize($file);
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$pathHash = md5($file);
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$sql = 'SELECT `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?';
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$result = \OC_DB::executeAudited($sql, array($this->getNumericStorageId(), $pathHash));
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if ($row = $result->fetchRow()) {
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return $row['fileid'];
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} else {
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return -1;
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}
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}
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/**
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* get the id of the parent folder of a file
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*
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* @param string $file
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* @return int
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*/
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public function getParentId($file) {
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if ($file === '') {
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return -1;
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} else {
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$parent = dirname($file);
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if ($parent === '.') {
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$parent = '';
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}
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return $this->getId($parent);
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}
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}
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/**
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* check if a file is available in the cache
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*
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* @param string $file
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* @return bool
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*/
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public function inCache($file) {
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return $this->getId($file) != -1;
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}
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/**
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* remove a file or folder from the cache
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*
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* @param string $file
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*/
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public function remove($file) {
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$entry = $this->get($file);
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if ($entry['mimetype'] === 'httpd/unix-directory') {
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$children = $this->getFolderContents($file);
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foreach ($children as $child) {
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$this->remove($child['path']);
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}
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}
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$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `fileid` = ?';
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\OC_DB::executeAudited($sql, array($entry['fileid']));
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}
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/**
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* Move a file or folder in the cache
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*
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* @param string $source
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* @param string $target
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*/
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public function move($source, $target) {
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// normalize source and target
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$source = $this->normalize($source);
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$target = $this->normalize($target);
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$sourceData = $this->get($source);
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$sourceId = $sourceData['fileid'];
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$newParentId = $this->getParentId($target);
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if ($sourceData['mimetype'] === 'httpd/unix-directory') {
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//find all child entries
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$sql = 'SELECT `path`, `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path` LIKE ?';
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$result = \OC_DB::executeAudited($sql, array($this->getNumericStorageId(), $source . '/%'));
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$childEntries = $result->fetchAll();
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$sourceLength = strlen($source);
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$query = \OC_DB::prepare('UPDATE `*PREFIX*filecache` SET `path` = ?, `path_hash` = ? WHERE `fileid` = ?');
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foreach ($childEntries as $child) {
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$targetPath = $target . substr($child['path'], $sourceLength);
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\OC_DB::executeAudited($query, array($targetPath, md5($targetPath), $child['fileid']));
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}
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}
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$sql = 'UPDATE `*PREFIX*filecache` SET `path` = ?, `path_hash` = ?, `name` = ?, `parent` =? WHERE `fileid` = ?';
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\OC_DB::executeAudited($sql, array($target, md5($target), basename($target), $newParentId, $sourceId));
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}
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/**
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* remove all entries for files that are stored on the storage from the cache
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*/
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public function clear() {
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$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `storage` = ?';
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\OC_DB::executeAudited($sql, array($this->getNumericStorageId()));
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$sql = 'DELETE FROM `*PREFIX*storages` WHERE `id` = ?';
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\OC_DB::executeAudited($sql, array($this->storageId));
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}
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/**
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* @param string $file
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*
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* @return int, Cache::NOT_FOUND, Cache::PARTIAL, Cache::SHALLOW or Cache::COMPLETE
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*/
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public function getStatus($file) {
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// normalize file
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$file = $this->normalize($file);
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$pathHash = md5($file);
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$sql = 'SELECT `size` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?';
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$result = \OC_DB::executeAudited($sql, array($this->getNumericStorageId(), $pathHash));
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if ($row = $result->fetchRow()) {
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if ((int)$row['size'] === -1) {
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return self::SHALLOW;
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} else {
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return self::COMPLETE;
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}
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} else {
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if (isset($this->partial[$file])) {
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return self::PARTIAL;
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} else {
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return self::NOT_FOUND;
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}
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}
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}
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/**
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* search for files matching $pattern
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*
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* @param string $pattern
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* @return array an array of file data
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*/
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public function search($pattern) {
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// normalize pattern
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$pattern = $this->normalize($pattern);
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$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`, `unencrypted_size`, `etag`, `permissions`
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FROM `*PREFIX*filecache` WHERE `name` LIKE ? AND `storage` = ?';
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$result = \OC_DB::executeAudited($sql, array($pattern, $this->getNumericStorageId()));
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$files = array();
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while ($row = $result->fetchRow()) {
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$row['mimetype'] = $this->getMimetype($row['mimetype']);
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$row['mimepart'] = $this->getMimetype($row['mimepart']);
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$files[] = $row;
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}
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return $files;
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}
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/**
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* search for files by mimetype
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*
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* @param string $mimetype
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* @return array
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*/
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public function searchByMime($mimetype) {
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if (strpos($mimetype, '/')) {
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$where = '`mimetype` = ?';
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} else {
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$where = '`mimepart` = ?';
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}
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$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`, `unencrypted_size`, `etag`, `permissions`
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FROM `*PREFIX*filecache` WHERE ' . $where . ' AND `storage` = ?';
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$mimetype = $this->getMimetypeId($mimetype);
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$result = \OC_DB::executeAudited($sql, array($mimetype, $this->getNumericStorageId()));
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$files = array();
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while ($row = $result->fetchRow()) {
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$row['mimetype'] = $this->getMimetype($row['mimetype']);
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$row['mimepart'] = $this->getMimetype($row['mimepart']);
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$files[] = $row;
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}
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return $files;
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}
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/**
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* update the folder size and the size of all parent folders
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*
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* @param string|boolean $path
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* @param array $data (optional) meta data of the folder
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*/
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public function correctFolderSize($path, $data = null) {
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$this->calculateFolderSize($path, $data);
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if ($path !== '') {
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$parent = dirname($path);
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if ($parent === '.' or $parent === '/') {
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$parent = '';
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}
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|
$this->correctFolderSize($parent);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* get 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 ($entry && $entry['mimetype'] === 'httpd/unix-directory') {
|
|
$id = $entry['fileid'];
|
|
$sql = 'SELECT SUM(`size`) AS f1, MIN(`size`) AS f2, ' .
|
|
'SUM(`unencrypted_size`) AS f3 ' .
|
|
'FROM `*PREFIX*filecache` ' .
|
|
'WHERE `parent` = ? AND `storage` = ?';
|
|
$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
|
|
if ($row = $result->fetchRow()) {
|
|
list($sum, $min, $unencryptedSum) = array_values($row);
|
|
$sum = 0 + $sum;
|
|
$min = 0 + $min;
|
|
$unencryptedSum = 0 + $unencryptedSum;
|
|
if ($min === -1) {
|
|
$totalSize = $min;
|
|
} else {
|
|
$totalSize = $sum;
|
|
}
|
|
$update = array();
|
|
if ($entry['size'] !== $totalSize) {
|
|
$update['size'] = $totalSize;
|
|
}
|
|
if (!isset($entry['unencrypted_size']) or $entry['unencrypted_size'] !== $unencryptedSum) {
|
|
$update['unencrypted_size'] = $unencryptedSum;
|
|
}
|
|
if (count($update) > 0) {
|
|
$this->update($id, $update);
|
|
}
|
|
if ($totalSize !== -1 and $unencryptedSum > 0) {
|
|
$totalSize = $unencryptedSum;
|
|
}
|
|
}
|
|
}
|
|
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` = ?';
|
|
$result = \OC_DB::executeAudited($sql, array($this->getNumericStorageId()));
|
|
$ids = array();
|
|
while ($row = $result->fetchRow()) {
|
|
$ids[] = $row['fileid'];
|
|
}
|
|
return $ids;
|
|
}
|
|
|
|
/**
|
|
* find a folder in the cache which has not been fully scanned
|
|
*
|
|
* If multiply 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 = \OC_DB::prepare('SELECT `path` FROM `*PREFIX*filecache`'
|
|
. ' WHERE `storage` = ? AND `size` = -1 ORDER BY `fileid` DESC',1);
|
|
$result = \OC_DB::executeAudited($query, array($this->getNumericStorageId()));
|
|
if ($row = $result->fetchRow()) {
|
|
return $row['path'];
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* get the path of a file on this storage by it's id
|
|
*
|
|
* @param int $id
|
|
* @return string|null
|
|
*/
|
|
public function getPathById($id) {
|
|
$sql = 'SELECT `path` FROM `*PREFIX*filecache` WHERE `fileid` = ? AND `storage` = ?';
|
|
$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
|
|
if ($row = $result->fetchRow()) {
|
|
// Oracle stores empty strings as null...
|
|
if ($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 $id
|
|
* @return array, first element holding the storage id, second the path
|
|
*/
|
|
static public function getById($id) {
|
|
$sql = 'SELECT `storage`, `path` FROM `*PREFIX*filecache` WHERE `fileid` = ?';
|
|
$result = \OC_DB::executeAudited($sql, array($id));
|
|
if ($row = $result->fetchRow()) {
|
|
$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 \OC_Util::normalizeUnicode($path);
|
|
}
|
|
}
|