606 lines
17 KiB
PHP
606 lines
17 KiB
PHP
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<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Ardinis <Ardinis@users.noreply.github.com>
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Daniel Kesselberg <mail@danielkesselberg.de>
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* @author Felix Moeller <mail@felixmoeller.de>
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* @author Jakob Sack <mail@jakobsack.de>
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* @author Jan-Christoph Borchardt <hey@jancborchardt.net>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Julius Härtl <jus@bitgrid.net>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Olivier Paroz <github@oparoz.com>
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* @author Pellaeon Lin <nfsmwlin@gmail.com>
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* @author RealRancor <fisch.666@gmx.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Simon Könnecke <simonkoennecke@gmail.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Thomas Tanghus <thomas@tanghus.net>
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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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use bantu\IniGetWrapper\IniGetWrapper;
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use Symfony\Component\Process\ExecutableFinder;
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/**
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* Collection of useful functions
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*/
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class OC_Helper {
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private static $templateManager;
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/**
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* Make a human file size
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* @param int $bytes file size in bytes
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* @return string a human readable file size
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*
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* Makes 2048 to 2 kB.
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*/
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public static function humanFileSize($bytes) {
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if ($bytes < 0) {
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return "?";
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}
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if ($bytes < 1024) {
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return "$bytes B";
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}
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$bytes = round($bytes / 1024, 0);
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if ($bytes < 1024) {
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return "$bytes KB";
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}
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$bytes = round($bytes / 1024, 1);
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if ($bytes < 1024) {
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return "$bytes MB";
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}
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$bytes = round($bytes / 1024, 1);
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if ($bytes < 1024) {
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return "$bytes GB";
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}
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$bytes = round($bytes / 1024, 1);
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if ($bytes < 1024) {
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return "$bytes TB";
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}
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$bytes = round($bytes / 1024, 1);
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return "$bytes PB";
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}
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/**
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* Make a computer file size
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* @param string $str file size in human readable format
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* @return float|bool a file size in bytes
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*
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* Makes 2kB to 2048.
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*
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* Inspired by: http://www.php.net/manual/en/function.filesize.php#92418
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*/
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public static function computerFileSize($str) {
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$str = strtolower($str);
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if (is_numeric($str)) {
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return (float)$str;
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}
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$bytes_array = [
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'b' => 1,
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'k' => 1024,
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'kb' => 1024,
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'mb' => 1024 * 1024,
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'm' => 1024 * 1024,
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'gb' => 1024 * 1024 * 1024,
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'g' => 1024 * 1024 * 1024,
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'tb' => 1024 * 1024 * 1024 * 1024,
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't' => 1024 * 1024 * 1024 * 1024,
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'pb' => 1024 * 1024 * 1024 * 1024 * 1024,
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'p' => 1024 * 1024 * 1024 * 1024 * 1024,
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];
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$bytes = (float)$str;
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if (preg_match('#([kmgtp]?b?)$#si', $str, $matches) && !empty($bytes_array[$matches[1]])) {
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$bytes *= $bytes_array[$matches[1]];
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} else {
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return false;
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}
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$bytes = round($bytes);
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return $bytes;
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}
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/**
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* Recursive copying of folders
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* @param string $src source folder
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* @param string $dest target folder
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*
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*/
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public static function copyr($src, $dest) {
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if (is_dir($src)) {
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if (!is_dir($dest)) {
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mkdir($dest);
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}
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$files = scandir($src);
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foreach ($files as $file) {
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if ($file != "." && $file != "..") {
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self::copyr("$src/$file", "$dest/$file");
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}
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}
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} elseif (file_exists($src) && !\OC\Files\Filesystem::isFileBlacklisted($src)) {
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copy($src, $dest);
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}
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}
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/**
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* Recursive deletion of folders
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* @param string $dir path to the folder
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* @param bool $deleteSelf if set to false only the content of the folder will be deleted
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* @return bool
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*/
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public static function rmdirr($dir, $deleteSelf = true) {
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if (is_dir($dir)) {
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$files = new RecursiveIteratorIterator(
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new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
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RecursiveIteratorIterator::CHILD_FIRST
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);
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foreach ($files as $fileInfo) {
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/** @var SplFileInfo $fileInfo */
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if ($fileInfo->isLink()) {
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unlink($fileInfo->getPathname());
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} elseif ($fileInfo->isDir()) {
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rmdir($fileInfo->getRealPath());
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} else {
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unlink($fileInfo->getRealPath());
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}
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}
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if ($deleteSelf) {
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rmdir($dir);
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}
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} elseif (file_exists($dir)) {
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if ($deleteSelf) {
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unlink($dir);
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}
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}
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if (!$deleteSelf) {
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return true;
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}
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return !file_exists($dir);
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}
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/**
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* @deprecated 18.0.0
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* @return \OC\Files\Type\TemplateManager
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*/
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public static function getFileTemplateManager() {
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if (!self::$templateManager) {
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self::$templateManager = new \OC\Files\Type\TemplateManager();
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}
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return self::$templateManager;
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}
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/**
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* detect if a given program is found in the search PATH
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*
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* @param string $name
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* @param bool $path
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* @internal param string $program name
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* @internal param string $optional search path, defaults to $PATH
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* @return bool true if executable program found in path
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*/
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public static function canExecute($name, $path = false) {
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// path defaults to PATH from environment if not set
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if ($path === false) {
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$path = getenv("PATH");
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}
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// we look for an executable file of that name
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$exts = [""];
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$check_fn = "is_executable";
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// Default check will be done with $path directories :
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$dirs = explode(PATH_SEPARATOR, $path);
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// WARNING : We have to check if open_basedir is enabled :
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$obd = OC::$server->get(IniGetWrapper::class)->getString('open_basedir');
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if ($obd != "none") {
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$obd_values = explode(PATH_SEPARATOR, $obd);
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if (count($obd_values) > 0 and $obd_values[0]) {
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// open_basedir is in effect !
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// We need to check if the program is in one of these dirs :
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$dirs = $obd_values;
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}
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}
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foreach ($dirs as $dir) {
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foreach ($exts as $ext) {
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if ($check_fn("$dir/$name" . $ext)) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* copy the contents of one stream to another
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*
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* @param resource $source
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* @param resource $target
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* @return array the number of bytes copied and result
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*/
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public static function streamCopy($source, $target) {
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if (!$source or !$target) {
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return [0, false];
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}
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$bufSize = 8192;
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$result = true;
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$count = 0;
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while (!feof($source)) {
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$buf = fread($source, $bufSize);
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$bytesWritten = fwrite($target, $buf);
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if ($bytesWritten !== false) {
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$count += $bytesWritten;
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}
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// note: strlen is expensive so only use it when necessary,
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// on the last block
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if ($bytesWritten === false
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|| ($bytesWritten < $bufSize && $bytesWritten < strlen($buf))
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) {
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// write error, could be disk full ?
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$result = false;
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break;
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}
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}
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return [$count, $result];
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}
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/**
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* Adds a suffix to the name in case the file exists
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*
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* @param string $path
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* @param string $filename
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* @return string
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*/
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public static function buildNotExistingFileName($path, $filename) {
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$view = \OC\Files\Filesystem::getView();
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return self::buildNotExistingFileNameForView($path, $filename, $view);
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}
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/**
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* Adds a suffix to the name in case the file exists
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*
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* @param string $path
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* @param string $filename
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* @return string
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*/
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public static function buildNotExistingFileNameForView($path, $filename, \OC\Files\View $view) {
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if ($path === '/') {
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$path = '';
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}
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if ($pos = strrpos($filename, '.')) {
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$name = substr($filename, 0, $pos);
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$ext = substr($filename, $pos);
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} else {
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$name = $filename;
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$ext = '';
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}
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$newpath = $path . '/' . $filename;
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if ($view->file_exists($newpath)) {
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if (preg_match_all('/\((\d+)\)/', $name, $matches, PREG_OFFSET_CAPTURE)) {
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//Replace the last "(number)" with "(number+1)"
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$last_match = count($matches[0]) - 1;
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$counter = $matches[1][$last_match][0] + 1;
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$offset = $matches[0][$last_match][1];
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$match_length = strlen($matches[0][$last_match][0]);
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} else {
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$counter = 2;
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$match_length = 0;
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$offset = false;
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}
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do {
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if ($offset) {
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//Replace the last "(number)" with "(number+1)"
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$newname = substr_replace($name, '(' . $counter . ')', $offset, $match_length);
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} else {
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$newname = $name . ' (' . $counter . ')';
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}
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$newpath = $path . '/' . $newname . $ext;
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$counter++;
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} while ($view->file_exists($newpath));
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}
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return $newpath;
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}
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/**
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* Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.
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*
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* @param array $input The array to work on
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* @param int $case Either MB_CASE_UPPER or MB_CASE_LOWER (default)
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* @param string $encoding The encoding parameter is the character encoding. Defaults to UTF-8
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* @return array
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*
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* Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.
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* based on http://www.php.net/manual/en/function.array-change-key-case.php#107715
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*
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*/
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public static function mb_array_change_key_case($input, $case = MB_CASE_LOWER, $encoding = 'UTF-8') {
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$case = ($case != MB_CASE_UPPER) ? MB_CASE_LOWER : MB_CASE_UPPER;
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$ret = [];
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foreach ($input as $k => $v) {
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$ret[mb_convert_case($k, $case, $encoding)] = $v;
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}
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return $ret;
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}
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/**
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* performs a search in a nested array
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* @param array $haystack the array to be searched
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* @param string $needle the search string
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* @param mixed $index optional, only search this key name
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* @return mixed the key of the matching field, otherwise false
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*
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* performs a search in a nested array
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*
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* taken from http://www.php.net/manual/en/function.array-search.php#97645
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*/
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public static function recursiveArraySearch($haystack, $needle, $index = null) {
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$aIt = new RecursiveArrayIterator($haystack);
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$it = new RecursiveIteratorIterator($aIt);
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|
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while ($it->valid()) {
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if (((isset($index) and ($it->key() == $index)) or !isset($index)) and ($it->current() == $needle)) {
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return $aIt->key();
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}
|
||
|
|
|
||
|
|
$it->next();
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* calculates the maximum upload size respecting system settings, free space and user quota
|
||
|
|
*
|
||
|
|
* @param string $dir the current folder where the user currently operates
|
||
|
|
* @param int $freeSpace the number of bytes free on the storage holding $dir, if not set this will be received from the storage directly
|
||
|
|
* @return int number of bytes representing
|
||
|
|
*/
|
||
|
|
public static function maxUploadFilesize($dir, $freeSpace = null) {
|
||
|
|
if (is_null($freeSpace) || $freeSpace < 0) {
|
||
|
|
$freeSpace = self::freeSpace($dir);
|
||
|
|
}
|
||
|
|
return min($freeSpace, self::uploadLimit());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calculate free space left within user quota
|
||
|
|
*
|
||
|
|
* @param string $dir the current folder where the user currently operates
|
||
|
|
* @return int number of bytes representing
|
||
|
|
*/
|
||
|
|
public static function freeSpace($dir) {
|
||
|
|
$freeSpace = \OC\Files\Filesystem::free_space($dir);
|
||
|
|
if ($freeSpace < \OCP\Files\FileInfo::SPACE_UNLIMITED) {
|
||
|
|
$freeSpace = max($freeSpace, 0);
|
||
|
|
return $freeSpace;
|
||
|
|
} else {
|
||
|
|
return (INF > 0)? INF: PHP_INT_MAX; // work around https://bugs.php.net/bug.php?id=69188
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calculate PHP upload limit
|
||
|
|
*
|
||
|
|
* @return int PHP upload file size limit
|
||
|
|
*/
|
||
|
|
public static function uploadLimit() {
|
||
|
|
$ini = \OC::$server->get(IniGetWrapper::class);
|
||
|
|
$upload_max_filesize = OCP\Util::computerFileSize($ini->get('upload_max_filesize'));
|
||
|
|
$post_max_size = OCP\Util::computerFileSize($ini->get('post_max_size'));
|
||
|
|
if ((int)$upload_max_filesize === 0 and (int)$post_max_size === 0) {
|
||
|
|
return INF;
|
||
|
|
} elseif ((int)$upload_max_filesize === 0 or (int)$post_max_size === 0) {
|
||
|
|
return max($upload_max_filesize, $post_max_size); //only the non 0 value counts
|
||
|
|
} else {
|
||
|
|
return min($upload_max_filesize, $post_max_size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if a function is available
|
||
|
|
*
|
||
|
|
* @param string $function_name
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public static function is_function_enabled($function_name) {
|
||
|
|
if (!function_exists($function_name)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
$ini = \OC::$server->get(IniGetWrapper::class);
|
||
|
|
$disabled = explode(',', $ini->get('disable_functions') ?: '');
|
||
|
|
$disabled = array_map('trim', $disabled);
|
||
|
|
if (in_array($function_name, $disabled)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
$disabled = explode(',', $ini->get('suhosin.executor.func.blacklist') ?: '');
|
||
|
|
$disabled = array_map('trim', $disabled);
|
||
|
|
if (in_array($function_name, $disabled)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Try to find a program
|
||
|
|
*
|
||
|
|
* @param string $program
|
||
|
|
* @return null|string
|
||
|
|
*/
|
||
|
|
public static function findBinaryPath($program) {
|
||
|
|
$memcache = \OC::$server->getMemCacheFactory()->createDistributed('findBinaryPath');
|
||
|
|
if ($memcache->hasKey($program)) {
|
||
|
|
return $memcache->get($program);
|
||
|
|
}
|
||
|
|
$result = null;
|
||
|
|
if (self::is_function_enabled('exec')) {
|
||
|
|
$exeSniffer = new ExecutableFinder();
|
||
|
|
// Returns null if nothing is found
|
||
|
|
$result = $exeSniffer->find($program, null, ['/usr/local/sbin', '/usr/local/bin', '/usr/sbin', '/usr/bin', '/sbin', '/bin', '/opt/bin']);
|
||
|
|
}
|
||
|
|
// store the value for 5 minutes
|
||
|
|
$memcache->set($program, $result, 300);
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calculate the disc space for the given path
|
||
|
|
*
|
||
|
|
* @param string $path
|
||
|
|
* @param \OCP\Files\FileInfo $rootInfo (optional)
|
||
|
|
* @return array
|
||
|
|
* @throws \OCP\Files\NotFoundException
|
||
|
|
*/
|
||
|
|
public static function getStorageInfo($path, $rootInfo = null) {
|
||
|
|
// return storage info without adding mount points
|
||
|
|
$includeExtStorage = \OC::$server->getSystemConfig()->getValue('quota_include_external_storage', false);
|
||
|
|
|
||
|
|
if (!$rootInfo) {
|
||
|
|
$rootInfo = \OC\Files\Filesystem::getFileInfo($path, $includeExtStorage ? 'ext' : false);
|
||
|
|
}
|
||
|
|
if (!$rootInfo instanceof \OCP\Files\FileInfo) {
|
||
|
|
throw new \OCP\Files\NotFoundException();
|
||
|
|
}
|
||
|
|
$used = $rootInfo->getSize();
|
||
|
|
if ($used < 0) {
|
||
|
|
$used = 0;
|
||
|
|
}
|
||
|
|
$quota = \OCP\Files\FileInfo::SPACE_UNLIMITED;
|
||
|
|
$mount = $rootInfo->getMountPoint();
|
||
|
|
$storage = $mount->getStorage();
|
||
|
|
$sourceStorage = $storage;
|
||
|
|
if ($storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
|
||
|
|
$includeExtStorage = false;
|
||
|
|
$sourceStorage = $storage->getSourceStorage();
|
||
|
|
}
|
||
|
|
if ($includeExtStorage) {
|
||
|
|
if ($storage->instanceOfStorage('\OC\Files\Storage\Home')
|
||
|
|
|| $storage->instanceOfStorage('\OC\Files\ObjectStore\HomeObjectStoreStorage')
|
||
|
|
) {
|
||
|
|
/** @var \OC\Files\Storage\Home $storage */
|
||
|
|
$user = $storage->getUser();
|
||
|
|
} else {
|
||
|
|
$user = \OC::$server->getUserSession()->getUser();
|
||
|
|
}
|
||
|
|
$quota = OC_Util::getUserQuota($user);
|
||
|
|
if ($quota !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
|
||
|
|
// always get free space / total space from root + mount points
|
||
|
|
return self::getGlobalStorageInfo($quota);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: need a better way to get total space from storage
|
||
|
|
if ($sourceStorage->instanceOfStorage('\OC\Files\Storage\Wrapper\Quota')) {
|
||
|
|
/** @var \OC\Files\Storage\Wrapper\Quota $storage */
|
||
|
|
$quota = $sourceStorage->getQuota();
|
||
|
|
}
|
||
|
|
$free = $sourceStorage->free_space($rootInfo->getInternalPath());
|
||
|
|
if ($free >= 0) {
|
||
|
|
$total = $free + $used;
|
||
|
|
} else {
|
||
|
|
$total = $free; //either unknown or unlimited
|
||
|
|
}
|
||
|
|
if ($total > 0) {
|
||
|
|
if ($quota > 0 && $total > $quota) {
|
||
|
|
$total = $quota;
|
||
|
|
}
|
||
|
|
// prevent division by zero or error codes (negative values)
|
||
|
|
$relative = round(($used / $total) * 10000) / 100;
|
||
|
|
} else {
|
||
|
|
$relative = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
$ownerId = $storage->getOwner($path);
|
||
|
|
$ownerDisplayName = '';
|
||
|
|
$owner = \OC::$server->getUserManager()->get($ownerId);
|
||
|
|
if ($owner) {
|
||
|
|
$ownerDisplayName = $owner->getDisplayName();
|
||
|
|
}
|
||
|
|
[,,,$mountPoint] = explode('/', $mount->getMountPoint(), 4);
|
||
|
|
|
||
|
|
return [
|
||
|
|
'free' => $free,
|
||
|
|
'used' => $used,
|
||
|
|
'quota' => $quota,
|
||
|
|
'total' => $total,
|
||
|
|
'relative' => $relative,
|
||
|
|
'owner' => $ownerId,
|
||
|
|
'ownerDisplayName' => $ownerDisplayName,
|
||
|
|
'mountType' => $mount->getMountType(),
|
||
|
|
'mountPoint' => trim($mountPoint, '/'),
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get storage info including all mount points and quota
|
||
|
|
*
|
||
|
|
* @param int $quota
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
private static function getGlobalStorageInfo($quota) {
|
||
|
|
$rootInfo = \OC\Files\Filesystem::getFileInfo('', 'ext');
|
||
|
|
$used = $rootInfo['size'];
|
||
|
|
if ($used < 0) {
|
||
|
|
$used = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
$total = $quota;
|
||
|
|
$free = $quota - $used;
|
||
|
|
|
||
|
|
if ($total > 0) {
|
||
|
|
if ($quota > 0 && $total > $quota) {
|
||
|
|
$total = $quota;
|
||
|
|
}
|
||
|
|
// prevent division by zero or error codes (negative values)
|
||
|
|
$relative = round(($used / $total) * 10000) / 100;
|
||
|
|
} else {
|
||
|
|
$relative = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'free' => $free,
|
||
|
|
'used' => $used,
|
||
|
|
'total' => $total,
|
||
|
|
'relative' => $relative,
|
||
|
|
'quota' => $quota
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns whether the config file is set manually to read-only
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public static function isReadOnlyConfigEnabled() {
|
||
|
|
return \OC::$server->getConfig()->getSystemValue('config_is_read_only', false);
|
||
|
|
}
|
||
|
|
}
|