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-rw-r--r--lib/private/legacy/files.php316
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diff --git a/lib/private/legacy/files.php b/lib/private/legacy/files.php
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+<?php
+/**
+ * @author Arthur Schiwon <blizzz@owncloud.com>
+ * @author Bart Visscher <bartv@thisnet.nl>
+ * @author Björn Schießle <schiessle@owncloud.com>
+ * @author Clark Tomlinson <fallen013@gmail.com>
+ * @author Frank Karlitschek <frank@owncloud.org>
+ * @author Jakob Sack <mail@jakobsack.de>
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ * @author Jörn Friedrich Dreyer <jfd@butonic.de>
+ * @author Michael Gapczynski <GapczynskiM@gmail.com>
+ * @author Nicolai Ehemann <en@enlightened.de>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ * @author Thibaut GRIDEL <tgridel@free.fr>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ * @author Victor Dubiniuk <dubiniuk@owncloud.com>
+ * @author Vincent Petry <pvince81@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @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/>
+ *
+ */
+
+use OC\Files\View;
+use OC\Streamer;
+use OCP\Lock\ILockingProvider;
+
+/**
+ * Class for file server access
+ *
+ */
+class OC_Files {
+ const FILE = 1;
+ const ZIP_FILES = 2;
+ const ZIP_DIR = 3;
+
+ const UPLOAD_MIN_LIMIT_BYTES = 1048576; // 1 MiB
+
+ /**
+ * @param string $filename
+ * @param string $name
+ */
+ private static function sendHeaders($filename, $name) {
+ OC_Response::setContentDispositionHeader($name, 'attachment');
+ header('Content-Transfer-Encoding: binary');
+ OC_Response::disableCaching();
+ $fileSize = \OC\Files\Filesystem::filesize($filename);
+ $type = \OC::$server->getMimeTypeDetector()->getSecureMimeType(\OC\Files\Filesystem::getMimeType($filename));
+ header('Content-Type: '.$type);
+ if ($fileSize > -1) {
+ OC_Response::setContentLengthHeader($fileSize);
+ }
+ }
+
+ /**
+ * return the content of a file or return a zip file containing multiple files
+ *
+ * @param string $dir
+ * @param string $files ; separated list of files to download
+ * @param boolean $onlyHeader ; boolean to only send header of the request
+ */
+ public static function get($dir, $files, $onlyHeader = false) {
+
+ $view = \OC\Files\Filesystem::getView();
+ $getType = self::FILE;
+ $filename = $dir;
+ try {
+
+ if (is_array($files) && count($files) === 1) {
+ $files = $files[0];
+ }
+
+ if (!is_array($files)) {
+ $filename = $dir . '/' . $files;
+ if (!$view->is_dir($filename)) {
+ self::getSingleFile($view, $dir, $files, $onlyHeader);
+ return;
+ }
+ }
+
+ $name = 'download';
+ if (is_array($files)) {
+ $getType = self::ZIP_FILES;
+ $basename = basename($dir);
+ if ($basename) {
+ $name = $basename;
+ }
+
+ $filename = $dir . '/' . $name;
+ } else {
+ $filename = $dir . '/' . $files;
+ $getType = self::ZIP_DIR;
+ // downloading root ?
+ if ($files !== '') {
+ $name = $files;
+ }
+ }
+
+ $streamer = new Streamer();
+ OC_Util::obEnd();
+
+ self::lockFiles($view, $dir, $files);
+
+ $streamer->sendHeaders($name);
+ $executionTime = intval(OC::$server->getIniWrapper()->getNumeric('max_execution_time'));
+ set_time_limit(0);
+ if ($getType === self::ZIP_FILES) {
+ foreach ($files as $file) {
+ $file = $dir . '/' . $file;
+ if (\OC\Files\Filesystem::is_file($file)) {
+ $fileSize = \OC\Files\Filesystem::filesize($file);
+ $fh = \OC\Files\Filesystem::fopen($file, 'r');
+ $streamer->addFileFromStream($fh, basename($file), $fileSize);
+ fclose($fh);
+ } elseif (\OC\Files\Filesystem::is_dir($file)) {
+ $streamer->addDirRecursive($file);
+ }
+ }
+ } elseif ($getType === self::ZIP_DIR) {
+ $file = $dir . '/' . $files;
+ $streamer->addDirRecursive($file);
+ }
+ $streamer->finalize();
+ set_time_limit($executionTime);
+ self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
+ } catch (\OCP\Lock\LockedException $ex) {
+ self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
+ OC::$server->getLogger()->logException($ex);
+ $l = \OC::$server->getL10N('core');
+ $hint = method_exists($ex, 'getHint') ? $ex->getHint() : '';
+ \OC_Template::printErrorPage($l->t('File is currently busy, please try again later'), $hint);
+ } catch (\OCP\Files\ForbiddenException $ex) {
+ self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
+ OC::$server->getLogger()->logException($ex);
+ $l = \OC::$server->getL10N('core');
+ \OC_Template::printErrorPage($l->t('Can\'t read file'), $ex->getMessage());
+ } catch (\Exception $ex) {
+ self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
+ OC::$server->getLogger()->logException($ex);
+ $l = \OC::$server->getL10N('core');
+ $hint = method_exists($ex, 'getHint') ? $ex->getHint() : '';
+ \OC_Template::printErrorPage($l->t('Can\'t read file'), $hint);
+ }
+ }
+
+ /**
+ * @param View $view
+ * @param string $name
+ * @param string $dir
+ * @param boolean $onlyHeader
+ */
+ private static function getSingleFile($view, $dir, $name, $onlyHeader) {
+ $filename = $dir . '/' . $name;
+ OC_Util::obEnd();
+ $view->lockFile($filename, ILockingProvider::LOCK_SHARED);
+
+ if (\OC\Files\Filesystem::isReadable($filename)) {
+ self::sendHeaders($filename, $name);
+ } elseif (!\OC\Files\Filesystem::file_exists($filename)) {
+ header("HTTP/1.0 404 Not Found");
+ $tmpl = new OC_Template('', '404', 'guest');
+ $tmpl->printPage();
+ exit();
+ } else {
+ header("HTTP/1.0 403 Forbidden");
+ die('403 Forbidden');
+ }
+ if ($onlyHeader) {
+ return;
+ }
+ $view->readfile($filename);
+ }
+
+ /**
+ * @param View $view
+ * @param string $dir
+ * @param string[]|string $files
+ */
+ public static function lockFiles($view, $dir, $files) {
+ if (!is_array($files)) {
+ $file = $dir . '/' . $files;
+ $files = [$file];
+ }
+ foreach ($files as $file) {
+ $file = $dir . '/' . $file;
+ $view->lockFile($file, ILockingProvider::LOCK_SHARED);
+ if ($view->is_dir($file)) {
+ $contents = $view->getDirectoryContent($file);
+ $contents = array_map(function($fileInfo) use ($file) {
+ /** @var \OCP\Files\FileInfo $fileInfo */
+ return $file . '/' . $fileInfo->getName();
+ }, $contents);
+ self::lockFiles($view, $dir, $contents);
+ }
+ }
+ }
+
+ /**
+ * set the maximum upload size limit for apache hosts using .htaccess
+ *
+ * @param int $size file size in bytes
+ * @param array $files override '.htaccess' and '.user.ini' locations
+ * @return bool false on failure, size on success
+ */
+ public static function setUploadLimit($size, $files = []) {
+ //don't allow user to break his config
+ $size = intval($size);
+ if ($size < self::UPLOAD_MIN_LIMIT_BYTES) {
+ return false;
+ }
+ $size = OC_Helper::phpFileSize($size);
+
+ $phpValueKeys = array(
+ 'upload_max_filesize',
+ 'post_max_size'
+ );
+
+ // default locations if not overridden by $files
+ $files = array_merge([
+ '.htaccess' => OC::$SERVERROOT . '/.htaccess',
+ '.user.ini' => OC::$SERVERROOT . '/.user.ini'
+ ], $files);
+
+ $updateFiles = [
+ $files['.htaccess'] => [
+ 'pattern' => '/php_value %1$s (\S)*/',
+ 'setting' => 'php_value %1$s %2$s'
+ ],
+ $files['.user.ini'] => [
+ 'pattern' => '/%1$s=(\S)*/',
+ 'setting' => '%1$s=%2$s'
+ ]
+ ];
+
+ $success = true;
+
+ foreach ($updateFiles as $filename => $patternMap) {
+ // suppress warnings from fopen()
+ $handle = @fopen($filename, 'r+');
+ if (!$handle) {
+ \OCP\Util::writeLog('files',
+ 'Can\'t write upload limit to ' . $filename . '. Please check the file permissions',
+ \OCP\Util::WARN);
+ $success = false;
+ continue; // try to update as many files as possible
+ }
+
+ $content = '';
+ while (!feof($handle)) {
+ $content .= fread($handle, 1000);
+ }
+
+ foreach ($phpValueKeys as $key) {
+ $pattern = vsprintf($patternMap['pattern'], [$key]);
+ $setting = vsprintf($patternMap['setting'], [$key, $size]);
+ $hasReplaced = 0;
+ $newContent = preg_replace($pattern, $setting, $content, 2, $hasReplaced);
+ if ($newContent !== null) {
+ $content = $newContent;
+ }
+ if ($hasReplaced === 0) {
+ $content .= "\n" . $setting;
+ }
+ }
+
+ // write file back
+ ftruncate($handle, 0);
+ rewind($handle);
+ fwrite($handle, $content);
+
+ fclose($handle);
+ }
+
+ if ($success) {
+ return OC_Helper::computerFileSize($size);
+ }
+ return false;
+ }
+
+ /**
+ * @param string $dir
+ * @param $files
+ * @param integer $getType
+ * @param View $view
+ * @param string $filename
+ */
+ private static function unlockAllTheFiles($dir, $files, $getType, $view, $filename) {
+ if ($getType === self::FILE) {
+ $view->unlockFile($filename, ILockingProvider::LOCK_SHARED);
+ }
+ if ($getType === self::ZIP_FILES) {
+ foreach ($files as $file) {
+ $file = $dir . '/' . $file;
+ $view->unlockFile($file, ILockingProvider::LOCK_SHARED);
+ }
+ }
+ if ($getType === self::ZIP_DIR) {
+ $file = $dir . '/' . $files;
+ $view->unlockFile($file, ILockingProvider::LOCK_SHARED);
+ }
+ }
+
+}
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