nextcloud/lib/private/helper.php

872 lines
25 KiB
PHP
Raw Normal View History

<?php
/**
2015-03-26 13:44:34 +03:00
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Björn Schießle <schiessle@owncloud.com>
* @author Christopher Schäpers <kondou@ts.unde.re>
2015-03-26 13:44:34 +03:00
* @author Fabian Henze <flyser42@gmx.de>
* @author Felix Moeller <mail@felixmoeller.de>
* @author Frank Karlitschek <frank@owncloud.org>
2015-10-26 15:54:55 +03:00
* @author François Kubler <francois@kubler.org>
2015-03-26 13:44:34 +03:00
* @author Georg Ehrke <georg@owncloud.com>
* @author Jakob Sack <mail@jakobsack.de>
* @author Jan-Christoph Borchardt <hey@jancborchardt.net>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
2015-03-26 13:44:34 +03:00
* @author Lukas Reschke <lukas@owncloud.com>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
2015-10-05 21:54:56 +03:00
* @author Nicolas Grekas <nicolas.grekas@gmail.com>
2015-06-25 12:43:55 +03:00
* @author Olivier Paroz <github@oparoz.com>
2015-03-26 13:44:34 +03:00
* @author Owen Winkler <a_github@midnightcircus.com>
* @author Pellaeon Lin <nfsmwlin@gmail.com>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
2015-10-26 15:54:55 +03:00
* @author Roeland Jago Douma <rullzer@owncloud.com>
* @author Simon Könnecke <simonkoennecke@gmail.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
2015-03-26 13:44:34 +03:00
* @author Thomas Tanghus <thomas@tanghus.net>
* @author Valerio Ponte <valerio.ponte@gmail.com>
* @author Vincent Petry <pvince81@owncloud.com>
*
2015-03-26 13:44:34 +03:00
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
2015-03-26 13:44:34 +03:00
* 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.
*
2015-03-26 13:44:34 +03:00
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
2015-03-26 13:44:34 +03:00
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
2015-03-26 13:44:34 +03:00
* 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 Symfony\Component\Process\ExecutableFinder;
/**
* Collection of useful functions
*/
2011-07-29 23:36:03 +04:00
class OC_Helper {
private static $templateManager;
2012-09-12 20:00:33 +04:00
/**
* Creates an url using a defined route
* @param string $route
* @param array $parameters with param=>value, will be appended to the returned url
2014-05-11 21:05:28 +04:00
* @return string the url
* @deprecated Use \OC::$server->getURLGenerator()->linkToRoute($route, $parameters)
2012-09-12 20:00:33 +04:00
*
* Returns a url to the given app and file.
*/
public static function linkToRoute($route, $parameters = array()) {
return OC::$server->getURLGenerator()->linkToRoute($route, $parameters);
2012-09-12 20:00:33 +04:00
}
/**
* Creates an absolute url
2012-09-23 04:39:11 +04:00
* @param string $app app
* @param string $file file
* @param array $args array with param=>value, will be appended to the returned url
* The value of $args will be urlencoded
2012-09-23 04:39:11 +04:00
* @return string the url
*
* Returns a absolute url to the given app and file.
*/
public static function linkToAbsolute($app, $file, $args = array()) {
2014-04-16 16:30:24 +04:00
return OC::$server->getURLGenerator()->getAbsoluteURL(
OC::$server->getURLGenerator()->linkTo($app, $file, $args)
2014-04-16 16:30:24 +04:00
);
2012-08-07 00:15:55 +04:00
}
/**
* Makes an $url absolute
2012-09-23 04:39:11 +04:00
* @param string $url the url
* @return string the absolute url
* @deprecated Use \OC::$server->getURLGenerator()->getAbsoluteURL($url)
2012-08-07 00:15:55 +04:00
*
* Returns a absolute url to the given app and file.
*/
public static function makeURLAbsolute($url) {
return OC::$server->getURLGenerator()->getAbsoluteURL($url);
}
/**
* Creates an url for remote use
* @param string $service id
* @return string the url
*
* Returns a url to the given service.
*/
public static function linkToRemoteBase($service) {
return OC::$server->getURLGenerator()->linkTo('', 'remote.php') . '/' . $service;
}
/**
* Creates an absolute url for remote use
2012-09-23 04:39:11 +04:00
* @param string $service id
* @param bool $add_slash
2012-09-23 04:39:11 +04:00
* @return string the url
*
* Returns a absolute url to the given service.
*/
public static function linkToRemote($service, $add_slash = true) {
2014-04-16 16:30:24 +04:00
return OC::$server->getURLGenerator()->getAbsoluteURL(
self::linkToRemoteBase($service)
. (($add_slash && $service[strlen($service) - 1] != '/') ? '/' : '')
);
}
2012-08-27 23:46:05 +04:00
/**
* Creates an absolute url for public use
2012-09-23 04:39:11 +04:00
* @param string $service id
* @param bool $add_slash
2012-09-23 04:39:11 +04:00
* @return string the url
2012-08-27 23:46:05 +04:00
*
* Returns a absolute url to the given service.
*/
public static function linkToPublic($service, $add_slash = false) {
if ($service === 'files') {
$url = OC::$server->getURLGenerator()->getAbsoluteURL('/s');
} else {
$url = OC::$server->getURLGenerator()->getAbsoluteURL(OC::$server->getURLGenerator()->linkTo('', 'public.php').'?service='.$service);
}
return $url . (($add_slash && $service[strlen($service) - 1] != '/') ? '/' : '');
2012-08-27 23:46:05 +04:00
}
/**
* Creates path to an image
2012-09-23 04:39:11 +04:00
* @param string $app app
* @param string $image image name
* @return string the url
* @deprecated Use \OC::$server->getURLGenerator()->imagePath($app, $image)
*
* Returns the path to the image.
*/
public static function imagePath($app, $image) {
return OC::$server->getURLGenerator()->imagePath($app, $image);
}
/**
* get path to icon of file type
2012-09-23 04:39:11 +04:00
* @param string $mimetype mimetype
* @return string the url
*
* Returns the path to the image of this file type.
* @deprecated 8.2.0 Use \OC::$server->getMimeTypeDetector()->mimeTypeIcon($mimetype)
*/
2013-05-29 18:56:28 +04:00
public static function mimetypeIcon($mimetype) {
return \OC::$server->getMimeTypeDetector()->mimeTypeIcon($mimetype);
}
2013-06-26 20:04:18 +04:00
/**
* get path to preview of file
2013-06-26 20:04:18 +04:00
* @param string $path path
* @return string the url
*
* Returns the path to the preview of the file.
*/
public static function previewIcon($path) {
return self::linkToRoute( 'core_ajax_preview', array('x' => 32, 'y' => 32, 'file' => $path ));
2013-06-26 20:04:18 +04:00
}
2013-07-30 14:29:12 +04:00
public static function publicPreviewIcon( $path, $token ) {
return self::linkToRoute( 'core_ajax_public_preview', array('x' => 32, 'y' => 32, 'file' => $path, 't' => $token));
}
/**
* shows whether the user has an avatar
* @param string $user username
* @return bool avatar set or not
* @deprecated 9.0.0 Use \OC::$server->getAvatarManager()->getAvatar($user)->exists();
**/
public static function userAvatarSet($user) {
return \OC::$server->getAvatarManager()->getAvatar($user)->exists();
}
/**
* Make a human file size
2012-09-23 04:39:11 +04:00
* @param int $bytes file size in bytes
* @return string a human readable file size
*
* Makes 2048 to 2 kB.
*/
public static function humanFileSize($bytes) {
if ($bytes < 0) {
return "?";
}
if ($bytes < 1024) {
return "$bytes B";
}
$bytes = round($bytes / 1024, 0);
if ($bytes < 1024) {
return "$bytes kB";
}
$bytes = round($bytes / 1024, 1);
if ($bytes < 1024) {
return "$bytes MB";
}
$bytes = round($bytes / 1024, 1);
if ($bytes < 1024) {
return "$bytes GB";
}
$bytes = round($bytes / 1024, 1);
if ($bytes < 1024) {
return "$bytes TB";
}
$bytes = round($bytes / 1024, 1);
return "$bytes PB";
}
/**
* Make a php file size
* @param int $bytes file size in bytes
* @return string a php parseable file size
*
* Makes 2048 to 2k and 2^41 to 2048G
*/
public static function phpFileSize($bytes) {
if ($bytes < 0) {
return "?";
}
if ($bytes < 1024) {
return $bytes . "B";
}
$bytes = round($bytes / 1024, 1);
if ($bytes < 1024) {
return $bytes . "K";
}
$bytes = round($bytes / 1024, 1);
if ($bytes < 1024) {
return $bytes . "M";
}
$bytes = round($bytes / 1024, 1);
return $bytes . "G";
}
/**
* Make a computer file size
* @param string $str file size in human readable format
2015-10-01 14:45:49 +03:00
* @return float a file size in bytes
*
* Makes 2kB to 2048.
*
* Inspired by: http://www.php.net/manual/en/function.filesize.php#92418
*/
public static function computerFileSize($str) {
$str = strtolower($str);
if (is_numeric($str)) {
2015-10-01 14:45:49 +03:00
return floatval($str);
}
$bytes_array = array(
2011-12-12 02:33:24 +04:00
'b' => 1,
'k' => 1024,
'kb' => 1024,
'mb' => 1024 * 1024,
'm' => 1024 * 1024,
2011-12-12 02:33:24 +04:00
'gb' => 1024 * 1024 * 1024,
'g' => 1024 * 1024 * 1024,
2011-12-12 02:33:24 +04:00
'tb' => 1024 * 1024 * 1024 * 1024,
't' => 1024 * 1024 * 1024 * 1024,
2011-12-12 02:33:24 +04:00
'pb' => 1024 * 1024 * 1024 * 1024 * 1024,
'p' => 1024 * 1024 * 1024 * 1024 * 1024,
);
$bytes = floatval($str);
2011-12-12 02:33:24 +04:00
if (preg_match('#([kmgtp]?b?)$#si', $str, $matches) && !empty($bytes_array[$matches[1]])) {
$bytes *= $bytes_array[$matches[1]];
} else {
return false;
}
$bytes = round($bytes);
return $bytes;
}
/**
* Recursive copying of folders
* @param string $src source folder
* @param string $dest target folder
*
*/
static function copyr($src, $dest) {
if (is_dir($src)) {
if (!is_dir($dest)) {
mkdir($dest);
}
$files = scandir($src);
2012-09-07 17:22:01 +04:00
foreach ($files as $file) {
if ($file != "." && $file != "..") {
self::copyr("$src/$file", "$dest/$file");
}
}
} elseif (file_exists($src) && !\OC\Files\Filesystem::isFileBlacklisted($src)) {
copy($src, $dest);
}
}
/**
* Recursive deletion of folders
* @param string $dir path to the folder
* @param bool $deleteSelf if set to false only the content of the folder will be deleted
2012-09-23 04:39:11 +04:00
* @return bool
*/
static function rmdirr($dir, $deleteSelf = true) {
if (is_dir($dir)) {
2014-06-23 15:33:55 +04:00
$files = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
RecursiveIteratorIterator::CHILD_FIRST
);
foreach ($files as $fileInfo) {
/** @var SplFileInfo $fileInfo */
2014-06-23 15:33:55 +04:00
if ($fileInfo->isDir()) {
rmdir($fileInfo->getRealPath());
} else {
unlink($fileInfo->getRealPath());
}
}
if ($deleteSelf) {
rmdir($dir);
}
} elseif (file_exists($dir)) {
if ($deleteSelf) {
unlink($dir);
}
}
if (!$deleteSelf) {
2012-09-23 04:39:11 +04:00
return true;
}
return !file_exists($dir);
}
2012-02-16 00:44:58 +04:00
/**
* @return \OC\Files\Type\Detection
* @deprecated 8.2.0 use \OC::$server->getMimeTypeDetector()
*/
static public function getMimetypeDetector() {
return \OC::$server->getMimeTypeDetector();
}
/**
* @return \OC\Files\Type\TemplateManager
*/
static public function getFileTemplateManager() {
if (!self::$templateManager) {
self::$templateManager = new \OC\Files\Type\TemplateManager();
}
return self::$templateManager;
}
2012-02-16 00:44:58 +04:00
/**
* Try to guess the mimetype based on filename
*
2013-06-07 02:17:51 +04:00
* @param string $path
2012-02-16 00:44:58 +04:00
* @return string
2015-07-18 22:51:12 +03:00
* @deprecated 8.2.0 Use \OC::$server->getMimeTypeDetector()->detectPath($path)
2012-02-16 00:44:58 +04:00
*/
static public function getFileNameMimeType($path) {
return \OC::$server->getMimeTypeDetector()->detectPath($path);
}
/**
* Get a secure mimetype that won't expose potential XSS.
*
* @param string $mimeType
* @return string
2015-07-18 22:51:12 +03:00
* @deprecated 8.2.0 Use \OC::$server->getMimeTypeDetector()->getSecureMimeType($mimeType)
*/
static function getSecureMimeType($mimeType) {
return \OC::$server->getMimeTypeDetector()->getSecureMimeType($mimeType);
}
/**
* get the mimetype form a data string
*
2012-09-23 04:39:11 +04:00
* @param string $data
* @return string
2015-07-18 22:51:12 +03:00
* @deprecated 8.2.0 Use \OC::$server->getMimeTypeDetector()->detectString($data)
*/
2012-09-07 17:22:01 +04:00
static function getStringMimeType($data) {
return \OC::$server->getMimeTypeDetector()->detectString($data);
}
/**
* detect if a given program is found in the search PATH
*
* @param string $name
* @param bool $path
* @internal param string $program name
* @internal param string $optional search path, defaults to $PATH
* @return bool true if executable program found in path
*/
2012-09-07 17:22:01 +04:00
public static function canExecute($name, $path = false) {
// path defaults to PATH from environment if not set
if ($path === false) {
$path = getenv("PATH");
}
// check method depends on operating system
if (!strncmp(PHP_OS, "WIN", 3)) {
// on Windows an appropriate COM or EXE file needs to exist
$exts = array(".exe", ".com");
$check_fn = "file_exists";
} else {
// anywhere else we look for an executable file of that name
$exts = array("");
$check_fn = "is_executable";
}
// Default check will be done with $path directories :
$dirs = explode(PATH_SEPARATOR, $path);
// WARNING : We have to check if open_basedir is enabled :
$obd = OC::$server->getIniWrapper()->getString('open_basedir');
if ($obd != "none") {
$obd_values = explode(PATH_SEPARATOR, $obd);
if (count($obd_values) > 0 and $obd_values[0]) {
2012-09-23 04:39:11 +04:00
// open_basedir is in effect !
// We need to check if the program is in one of these dirs :
$dirs = $obd_values;
}
}
foreach ($dirs as $dir) {
foreach ($exts as $ext) {
if ($check_fn("$dir/$name" . $ext))
return true;
}
}
return false;
}
/**
* copy the contents of one stream to another
*
2012-09-23 04:39:11 +04:00
* @param resource $source
* @param resource $target
* @return array the number of bytes copied and result
*/
2012-11-02 22:53:02 +04:00
public static function streamCopy($source, $target) {
if (!$source or !$target) {
return array(0, false);
}
$bufSize = 8192;
$result = true;
$count = 0;
while (!feof($source)) {
$buf = fread($source, $bufSize);
$bytesWritten = fwrite($target, $buf);
if ($bytesWritten !== false) {
$count += $bytesWritten;
}
// note: strlen is expensive so only use it when necessary,
// on the last block
if ($bytesWritten === false
|| ($bytesWritten < $bufSize && $bytesWritten < strlen($buf))
) {
// write error, could be disk full ?
$result = false;
break;
}
}
return array($count, $result);
}
2012-02-28 14:16:19 +04:00
/**
* create a temporary file with an unique filename
*
2012-09-23 04:39:11 +04:00
* @param string $postfix
2012-02-28 14:16:19 +04:00
* @return string
* @deprecated Use the TempManager instead
2012-02-28 14:16:19 +04:00
*
* temporary files are automatically cleaned up after the script is finished
*/
public static function tmpFile($postfix = '') {
return \OC::$server->getTempManager()->getTemporaryFile($postfix);
}
2013-01-14 23:30:39 +04:00
/**
* create a temporary folder with an unique filename
*
* @return string
* @deprecated Use the TempManager instead
*
* temporary files are automatically cleaned up after the script is finished
*/
2012-09-07 17:22:01 +04:00
public static function tmpFolder() {
return \OC::$server->getTempManager()->getTemporaryFolder();
}
2012-06-14 14:57:30 +04:00
/**
* Adds a suffix to the name in case the file exists
*
* @param string $path
* @param string $filename
* @return string
*/
2012-09-07 17:22:01 +04:00
public static function buildNotExistingFileName($path, $filename) {
$view = \OC\Files\Filesystem::getView();
return self::buildNotExistingFileNameForView($path, $filename, $view);
}
/**
* Adds a suffix to the name in case the file exists
*
* @param string $path
* @param string $filename
* @return string
*/
public static function buildNotExistingFileNameForView($path, $filename, \OC\Files\View $view) {
if ($path === '/') {
$path = '';
2012-06-14 14:57:30 +04:00
}
if ($pos = strrpos($filename, '.')) {
$name = substr($filename, 0, $pos);
$ext = substr($filename, $pos);
} else {
$name = $filename;
2012-09-23 04:39:11 +04:00
$ext = '';
2012-06-14 14:57:30 +04:00
}
$newpath = $path . '/' . $filename;
2013-07-05 17:38:09 +04:00
if ($view->file_exists($newpath)) {
if (preg_match_all('/\((\d+)\)/', $name, $matches, PREG_OFFSET_CAPTURE)) {
2013-09-05 13:58:57 +04:00
//Replace the last "(number)" with "(number+1)"
$last_match = count($matches[0]) - 1;
$counter = $matches[1][$last_match][0] + 1;
2013-07-05 17:38:09 +04:00
$offset = $matches[0][$last_match][1];
$match_length = strlen($matches[0][$last_match][0]);
} else {
$counter = 2;
$match_length = 0;
2013-07-05 17:38:09 +04:00
$offset = false;
}
do {
if ($offset) {
2013-09-05 13:58:57 +04:00
//Replace the last "(number)" with "(number+1)"
$newname = substr_replace($name, '(' . $counter . ')', $offset, $match_length);
2013-07-05 17:38:09 +04:00
} else {
$newname = $name . ' (' . $counter . ')';
}
$newpath = $path . '/' . $newname . $ext;
$counter++;
} while ($view->file_exists($newpath));
2012-06-14 14:57:30 +04:00
}
return $newpath;
}
2013-01-13 17:54:18 +04:00
/**
* Checks if $sub is a subdirectory of $parent
*
2012-09-23 04:39:11 +04:00
* @param string $sub
* @param string $parent
2012-04-18 10:20:51 +04:00
* @return bool
*/
public static function isSubDirectory($sub, $parent) {
$realpathSub = realpath($sub);
$realpathParent = realpath($parent);
// realpath() may return false in case the directory does not exist
// since we can not be sure how different PHP versions may behave here
// we do an additional check whether realpath returned false
if($realpathSub === false || $realpathParent === false) {
return false;
}
// Check whether $sub is a subdirectory of $parent
if (strpos($realpathSub, $realpathParent) === 0) {
return true;
}
return false;
2012-04-18 10:20:51 +04:00
}
/**
* Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.
*
* @param array $input The array to work on
* @param int $case Either MB_CASE_UPPER or MB_CASE_LOWER (default)
* @param string $encoding The encoding parameter is the character encoding. Defaults to UTF-8
* @return array
*
* Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.
* based on http://www.php.net/manual/en/function.array-change-key-case.php#107715
*
*/
2012-09-07 17:22:01 +04:00
public static function mb_array_change_key_case($input, $case = MB_CASE_LOWER, $encoding = 'UTF-8') {
$case = ($case != MB_CASE_UPPER) ? MB_CASE_LOWER : MB_CASE_UPPER;
$ret = array();
foreach ($input as $k => $v) {
$ret[mb_convert_case($k, $case, $encoding)] = $v;
}
return $ret;
}
/**
* performs a search in a nested array
* @param array $haystack the array to be searched
* @param string $needle the search string
* @param string $index optional, only search this key name
* @return mixed the key of the matching field, otherwise false
*
* performs a search in a nested array
*
* taken from http://www.php.net/manual/en/function.array-search.php#97645
*/
public static function recursiveArraySearch($haystack, $needle, $index = null) {
$aIt = new RecursiveArrayIterator($haystack);
$it = new RecursiveIteratorIterator($aIt);
while ($it->valid()) {
if (((isset($index) AND ($it->key() == $index)) OR (!isset($index))) AND ($it->current() == $needle)) {
return $aIt->key();
}
$it->next();
}
return false;
}
2012-11-12 16:56:29 +04:00
2012-11-12 17:04:23 +04:00
/**
* Shortens str to maxlen by replacing characters in the middle with '...', eg.
* ellipsis('a very long string with lots of useless info to make a better example', 14) becomes 'a very ...example'
*
2012-11-12 17:04:23 +04:00
* @param string $str the string
* @param string $maxlen the maximum length of the result
* @return string with at most maxlen characters
*/
2012-11-12 16:56:29 +04:00
public static function ellipsis($str, $maxlen) {
if (strlen($str) > $maxlen) {
$characters = floor($maxlen / 2);
return substr($str, 0, $characters) . '...' . substr($str, -1 * $characters);
}
return $str;
}
2013-01-18 23:09:03 +04:00
/**
* calculates the maximum upload size respecting system settings, free space and user quota
2013-01-18 23:09:03 +04:00
*
* @param string $dir the current folder where the user currently operates
* @param int $freeSpace the number of bytes free on the storage holding $dir, if not set this will be received from the storage directly
* @return int number of bytes representing
2013-01-18 23:09:03 +04:00
*/
public static function maxUploadFilesize($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);
2014-08-19 16:05:08 +04:00
if ($freeSpace !== \OCP\Files\FileInfo::SPACE_UNKNOWN) {
$freeSpace = max($freeSpace, 0);
return $freeSpace;
} else {
2015-10-02 15:16:13 +03:00
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->getIniWrapper();
$upload_max_filesize = OCP\Util::computerFileSize($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);
}
2013-01-18 23:09:03 +04:00
}
/**
* 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->getIniWrapper();
$disabled = explode(',', $ini->get('disable_functions'));
2014-01-07 22:47:01 +04:00
$disabled = array_map('trim', $disabled);
if (in_array($function_name, $disabled)) {
return false;
}
$disabled = explode(',', $ini->get('suhosin.executor.func.blacklist'));
2014-01-07 22:47:01 +04:00
$disabled = array_map('trim', $disabled);
if (in_array($function_name, $disabled)) {
return false;
}
return true;
}
/**
* Try to find a program
* Note: currently windows is not supported
*
* @param string $program
* @return null|string
*/
public static function findBinaryPath($program) {
$memcache = \OC::$server->getMemCacheFactory()->create('findBinaryPath');
if ($memcache->hasKey($program)) {
return $memcache->get($program);
}
$result = null;
if (!\OC_Util::runningOnWindows() && self::is_function_enabled('exec')) {
$exeSniffer = new ExecutableFinder();
// Returns null if nothing is found
$result = $exeSniffer->find($program);
if (empty($result)) {
$paths = getenv('PATH');
if (empty($paths)) {
$paths = '/usr/local/bin /usr/bin /opt/bin /bin';
} else {
$paths = str_replace(':',' ',getenv('PATH'));
}
2015-03-03 00:15:07 +03:00
$command = 'find ' . $paths . ' -name ' . escapeshellarg($program) . ' 2> /dev/null';
exec($command, $output, $returnCode);
if (count($output) > 0) {
$result = escapeshellcmd($output[0]);
}
}
}
$memcache->set($program, $result, 3600);
return $result;
}
/**
2013-08-27 02:59:58 +04:00
* Calculate the disc space for the given path
*
* @param string $path
* @param \OCP\Files\FileInfo $rootInfo (optional)
2013-08-27 02:59:58 +04:00
* @return array
* @throws \OCP\Files\NotFoundException
*/
public static function getStorageInfo($path, $rootInfo = null) {
// return storage info without adding mount points
$includeExtStorage = \OC_Config::getValue('quota_include_external_storage', false);
2014-04-29 17:14:48 +04:00
if (!$rootInfo) {
$rootInfo = \OC\Files\Filesystem::getFileInfo($path, false);
}
if (!$rootInfo instanceof \OCP\Files\FileInfo) {
throw new \OCP\Files\NotFoundException();
}
$used = $rootInfo->getSize();
if ($used < 0) {
$used = 0;
}
$quota = 0;
$storage = $rootInfo->getStorage();
if ($includeExtStorage && $storage->instanceOfStorage('\OC\Files\Storage\Shared')) {
$includeExtStorage = false;
}
if ($includeExtStorage) {
$quota = OC_Util::getUserQuota(\OCP\User::getUser());
2014-08-19 16:05:08 +04:00
if ($quota !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
// always get free space / total space from root + mount points
return self::getGlobalStorageInfo();
}
}
// TODO: need a better way to get total space from storage
if ($storage->instanceOfStorage('\OC\Files\Storage\Wrapper\Quota')) {
/** @var \OC\Files\Storage\Wrapper\Quota $storage */
$quota = $storage->getQuota();
}
$free = $storage->free_space('');
if ($free >= 0) {
$total = $free + $used;
} else {
$total = $free; //either unknown or unlimited
}
2013-08-27 12:58:17 +04:00
if ($total > 0) {
if ($quota > 0 && $total > $quota) {
$total = $quota;
}
2013-08-27 12:58:17 +04:00
// 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();
}
return [
'free' => $free,
'used' => $used,
'total' => $total,
'relative' => $relative,
'owner' => $ownerId,
'ownerDisplayName' => $ownerDisplayName,
];
}
/**
* Get storage info including all mount points and quota
*
* @return array
*/
private static function getGlobalStorageInfo() {
$quota = OC_Util::getUserQuota(\OCP\User::getUser());
$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 array('free' => $free, 'used' => $used, 'total' => $total, 'relative' => $relative);
}
/**
* Returns whether the config file is set manually to read-only
* @return bool
*/
public static function isReadOnlyConfigEnabled() {
return \OC::$server->getConfig()->getSystemValue('config_is_read_only', false);
}
}