nextcloud/lib/private/util.php

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<?php
/**
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* @author Adam Williamson <awilliam@redhat.com>
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* @author Andreas Böhler <dev@aboehler.at>
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* @author Andreas Fischer <bantu@owncloud.com>
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @author Birk Borkason <daniel.niccoli@gmail.com>
* @author Björn Schießle <schiessle@owncloud.com>
* @author Brice Maron <brice@bmaron.net>
* @author Christian Reiner <github@christian-reiner.info>
* @author Christopher Schäpers <kondou@ts.unde.re>
* @author Clark Tomlinson <fallen013@gmail.com>
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* @author cmeh <cmeh@users.noreply.github.com>
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* @author Florin Peter <github@florin-peter.de>
* @author Frank Karlitschek <frank@owncloud.org>
* @author Georg Ehrke <georg@owncloud.com>
* @author helix84 <helix84@centrum.sk>
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* @author Individual IT Services <info@individual-it.net>
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* @author Jakob Sack <mail@jakobsack.de>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Markus Goetz <markus@woboq.com>
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* @author Martin Mattel <martin.mattel@diemattels.at>
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* @author Marvin Thomas Rabe <mrabe@marvinrabe.de>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Michael Göhler <somebody.here@gmx.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <rullzer@owncloud.com>
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* @author Scrutinizer Auto-Fixer <auto-fixer@scrutinizer-ci.com>
* @author Stefan Rado <owncloud@sradonia.net>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Schmidt <tschmidt@suse.de>
* @author Thomas Tanghus <thomas@tanghus.net>
* @author Victor Dubiniuk <dubiniuk@owncloud.com>
* @author Vincent Petry <pvince81@owncloud.com>
* @author Volkan Gezer <volkangezer@gmail.com>
*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @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/>
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*
*/
use OCP\IConfig;
use OCP\IGroupManager;
use OCP\IUser;
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class OC_Util {
public static $scripts = array();
public static $styles = array();
public static $headers = array();
private static $rootMounted = false;
private static $fsSetup = false;
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protected static function getAppManager() {
return \OC::$server->getAppManager();
}
private static function initLocalStorageRootFS() {
// mount local file backend as root
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$configDataDirectory = \OC::$server->getSystemConfig()->getValue("datadirectory", OC::$SERVERROOT . "/data");
//first set up the local "root" storage
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\OC\Files\Filesystem::initMountManager();
if (!self::$rootMounted) {
\OC\Files\Filesystem::mount('\OC\Files\Storage\Local', array('datadir' => $configDataDirectory), '/');
self::$rootMounted = true;
}
}
/**
* mounting an object storage as the root fs will in essence remove the
* necessity of a data folder being present.
* TODO make home storage aware of this and use the object storage instead of local disk access
*
* @param array $config containing 'class' and optional 'arguments'
*/
private static function initObjectStoreRootFS($config) {
// check misconfiguration
if (empty($config['class'])) {
\OCP\Util::writeLog('files', 'No class given for objectstore', \OCP\Util::ERROR);
}
if (!isset($config['arguments'])) {
$config['arguments'] = array();
}
// instantiate object store implementation
$config['arguments']['objectstore'] = new $config['class']($config['arguments']);
// mount with plain / root object store implementation
$config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage';
// mount object storage as root
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\OC\Files\Filesystem::initMountManager();
if (!self::$rootMounted) {
\OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/');
self::$rootMounted = true;
}
}
/**
* Can be set up
*
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* @param string $user
* @return boolean
* @description configure the initial filesystem based on the configuration
*/
public static function setupFS($user = '') {
//setting up the filesystem twice can only lead to trouble
if (self::$fsSetup) {
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return false;
}
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\OC::$server->getEventLogger()->start('setup_fs', 'Setup filesystem');
// If we are not forced to load a specific user we load the one that is logged in
if ($user == "" && OC_User::isLoggedIn()) {
$user = OC_User::getUser();
}
// load all filesystem apps before, so no setup-hook gets lost
OC_App::loadApps(array('filesystem'));
// the filesystem will finish when $user is not empty,
// mark fs setup here to avoid doing the setup from loading
// OC_Filesystem
if ($user != '') {
self::$fsSetup = true;
}
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\OC\Files\Filesystem::initMountManager();
\OC\Files\Filesystem::addStorageWrapper('mount_options', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
if ($storage->instanceOfStorage('\OC\Files\Storage\Common')) {
/** @var \OC\Files\Storage\Common $storage */
$storage->setMountOptions($mount->getOptions());
}
return $storage;
});
// install storage availability wrapper, before most other wrappers
\OC\Files\Filesystem::addStorageWrapper('oc_availability', function ($mountPoint, $storage) {
if (!$storage->isLocal()) {
return new \OC\Files\Storage\Wrapper\Availability(['storage' => $storage]);
}
return $storage;
});
\OC\Files\Filesystem::addStorageWrapper('oc_quota', function ($mountPoint, $storage) {
// set up quota for home storages, even for other users
// which can happen when using sharing
/**
* @var \OC\Files\Storage\Storage $storage
*/
if ($storage->instanceOfStorage('\OC\Files\Storage\Home')
|| $storage->instanceOfStorage('\OC\Files\ObjectStore\HomeObjectStoreStorage')
) {
/** @var \OC\Files\Storage\Home $storage */
if (is_object($storage->getUser())) {
$user = $storage->getUser()->getUID();
$quota = OC_Util::getUserQuota($user);
if ($quota !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
return new \OC\Files\Storage\Wrapper\Quota(array('storage' => $storage, 'quota' => $quota, 'root' => 'files'));
}
}
}
return $storage;
});
OC_Hook::emit('OC_Filesystem', 'preSetup', array('user' => $user));
//check if we are using an object storage
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$objectStore = \OC::$server->getSystemConfig()->getValue('objectstore', null);
if (isset($objectStore)) {
self::initObjectStoreRootFS($objectStore);
} else {
self::initLocalStorageRootFS();
}
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if ($user != '' && !OCP\User::userExists($user)) {
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\OC::$server->getEventLogger()->end('setup_fs');
return false;
}
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//if we aren't logged in, there is no use to set up the filesystem
if ($user != "") {
$userDir = '/' . $user . '/files';
//jail the user into his "home" directory
\OC\Files\Filesystem::init($user, $userDir);
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OC_Hook::emit('OC_Filesystem', 'setup', array('user' => $user, 'user_dir' => $userDir));
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}
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\OC::$server->getEventLogger()->end('setup_fs');
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return true;
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}
/**
* check if a password is required for each public link
*
* @return boolean
*/
public static function isPublicLinkPasswordRequired() {
$appConfig = \OC::$server->getAppConfig();
$enforcePassword = $appConfig->getValue('core', 'shareapi_enforce_links_password', 'no');
return ($enforcePassword === 'yes') ? true : false;
}
/**
* check if sharing is disabled for the current user
* @param IConfig $config
* @param IGroupManager $groupManager
* @param IUser|null $user
* @return bool
*/
public static function isSharingDisabledForUser(IConfig $config, IGroupManager $groupManager, $user) {
if ($config->getAppValue('core', 'shareapi_exclude_groups', 'no') === 'yes') {
$groupsList = $config->getAppValue('core', 'shareapi_exclude_groups_list', '');
$excludedGroups = json_decode($groupsList);
if (is_null($excludedGroups)) {
$excludedGroups = explode(',', $groupsList);
$newValue = json_encode($excludedGroups);
$config->setAppValue('core', 'shareapi_exclude_groups_list', $newValue);
}
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$usersGroups = $groupManager->getUserGroupIds($user);
if (!empty($usersGroups)) {
$remainingGroups = array_diff($usersGroups, $excludedGroups);
// if the user is only in groups which are disabled for sharing then
// sharing is also disabled for the user
if (empty($remainingGroups)) {
return true;
}
}
}
return false;
}
/**
* check if share API enforces a default expire date
*
* @return boolean
*/
public static function isDefaultExpireDateEnforced() {
$isDefaultExpireDateEnabled = \OCP\Config::getAppValue('core', 'shareapi_default_expire_date', 'no');
$enforceDefaultExpireDate = false;
if ($isDefaultExpireDateEnabled === 'yes') {
$value = \OCP\Config::getAppValue('core', 'shareapi_enforce_expire_date', 'no');
$enforceDefaultExpireDate = ($value === 'yes') ? true : false;
}
return $enforceDefaultExpireDate;
}
/**
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* Get the quota of a user
*
* @param string $user
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* @return int Quota bytes
*/
public static function getUserQuota($user) {
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$config = \OC::$server->getConfig();
$userQuota = $config->getUserValue($user, 'files', 'quota', 'default');
if ($userQuota === 'default') {
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$userQuota = $config->getAppValue('files', 'default_quota', 'none');
}
if($userQuota === 'none') {
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return \OCP\Files\FileInfo::SPACE_UNLIMITED;
}else{
return OC_Helper::computerFileSize($userQuota);
}
}
/**
* copies the skeleton to the users /files
*
* @param String $userId
* @param \OCP\Files\Folder $userDirectory
*/
public static function copySkeleton($userId, \OCP\Files\Folder $userDirectory) {
$skeletonDirectory = \OCP\Config::getSystemValue('skeletondirectory', \OC::$SERVERROOT . '/core/skeleton');
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if (!empty($skeletonDirectory)) {
\OCP\Util::writeLog(
'files_skeleton',
'copying skeleton for '.$userId.' from '.$skeletonDirectory.' to '.$userDirectory->getFullPath('/'),
\OCP\Util::DEBUG
);
self::copyr($skeletonDirectory, $userDirectory);
// update the file cache
$userDirectory->getStorage()->getScanner()->scan('', \OC\Files\Cache\Scanner::SCAN_RECURSIVE);
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}
}
/**
* copies a directory recursively by using streams
*
* @param string $source
* @param \OCP\Files\Folder $target
* @return void
*/
public static function copyr($source, \OCP\Files\Folder $target) {
$dir = opendir($source);
while (false !== ($file = readdir($dir))) {
if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
if (is_dir($source . '/' . $file)) {
$child = $target->newFolder($file);
self::copyr($source . '/' . $file, $child);
} else {
$child = $target->newFile($file);
stream_copy_to_stream(fopen($source . '/' . $file,'r'), $child->fopen('w'));
}
}
}
closedir($dir);
}
/**
* @return void
*/
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public static function tearDownFS() {
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\OC\Files\Filesystem::tearDown();
self::$fsSetup = false;
self::$rootMounted = false;
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}
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/**
* get the current installed version of ownCloud
*
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* @return array
*/
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public static function getVersion() {
OC_Util::loadVersion();
return \OC::$server->getSession()->get('OC_Version');
}
/**
* get the current installed version string of ownCloud
*
* @return string
*/
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public static function getVersionString() {
OC_Util::loadVersion();
return \OC::$server->getSession()->get('OC_VersionString');
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}
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/**
* @description get the current installed edition of ownCloud. There is the community
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* edition that just returns an empty string and the enterprise edition
* that returns "Enterprise".
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* @return string
*/
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public static function getEditionString() {
if (OC_App::isEnabled('enterprise_key')) {
return "Enterprise";
} else {
return "";
}
}
/**
* @description get the update channel of the current installed of ownCloud.
* @return string
*/
public static function getChannel() {
OC_Util::loadVersion();
return \OC::$server->getSession()->get('OC_Channel');
}
/**
* @description get the build number of the current installed of ownCloud.
* @return string
*/
public static function getBuild() {
OC_Util::loadVersion();
return \OC::$server->getSession()->get('OC_Build');
}
/**
* @description load the version.php into the session as cache
*/
private static function loadVersion() {
$timestamp = filemtime(OC::$SERVERROOT . '/version.php');
if (!\OC::$server->getSession()->exists('OC_Version') or OC::$server->getSession()->get('OC_Version_Timestamp') != $timestamp) {
require OC::$SERVERROOT . '/version.php';
$session = \OC::$server->getSession();
/** @var $timestamp int */
$session->set('OC_Version_Timestamp', $timestamp);
/** @var $OC_Version string */
$session->set('OC_Version', $OC_Version);
/** @var $OC_VersionString string */
$session->set('OC_VersionString', $OC_VersionString);
/** @var $OC_Build string */
$session->set('OC_Build', $OC_Build);
// Allow overriding update channel
if (\OC::$server->getSystemConfig()->getValue('installed', false)) {
$channel = \OC::$server->getAppConfig()->getValue('core', 'OC_Channel');
} else {
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/** @var $OC_Channel string */
$channel = $OC_Channel;
}
if (!is_null($channel)) {
$session->set('OC_Channel', $channel);
} else {
/** @var $OC_Channel string */
$session->set('OC_Channel', $OC_Channel);
}
}
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}
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/**
* generates a path for JS/CSS files. If no application is provided it will create the path for core.
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*
* @param string $application application to get the files from
* @param string $directory directory withing this application (css, js, vendor, etc)
* @param string $file the file inside of the above folder
* @return string the path
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*/
private static function generatePath($application, $directory, $file) {
if (is_null($file)) {
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$file = $application;
$application = "";
}
if (!empty($application)) {
return "$application/$directory/$file";
} else {
return "$directory/$file";
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}
}
/**
* add a javascript file
*
* @param string $application application id
* @param string|null $file filename
* @param bool $prepend prepend the Script to the beginning of the list
* @return void
*/
public static function addScript($application, $file = null, $prepend = false) {
$path = OC_Util::generatePath($application, 'js', $file);
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// core js files need separate handling
if ($application !== 'core' && $file !== null) {
self::addTranslations ( $application );
}
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self::addExternalResource($application, $prepend, $path, "script");
}
/**
* add a javascript file from the vendor sub folder
*
* @param string $application application id
* @param string|null $file filename
* @param bool $prepend prepend the Script to the beginning of the list
* @return void
*/
public static function addVendorScript($application, $file = null, $prepend = false) {
$path = OC_Util::generatePath($application, 'vendor', $file);
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self::addExternalResource($application, $prepend, $path, "script");
}
/**
* add a translation JS file
*
* @param string $application application id
* @param string $languageCode language code, defaults to the current language
* @param bool $prepend prepend the Script to the beginning of the list
*/
public static function addTranslations($application, $languageCode = null, $prepend = false) {
if (is_null($languageCode)) {
$languageCode = \OC_L10N::findLanguage($application);
}
if (!empty($application)) {
$path = "$application/l10n/$languageCode";
} else {
$path = "l10n/$languageCode";
}
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self::addExternalResource($application, $prepend, $path, "script");
}
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/**
* add a css file
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*
* @param string $application application id
* @param string|null $file filename
* @param bool $prepend prepend the Style to the beginning of the list
* @return void
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*/
public static function addStyle($application, $file = null, $prepend = false) {
$path = OC_Util::generatePath($application, 'css', $file);
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self::addExternalResource($application, $prepend, $path, "style");
}
/**
* add a css file from the vendor sub folder
*
* @param string $application application id
* @param string|null $file filename
* @param bool $prepend prepend the Style to the beginning of the list
* @return void
*/
public static function addVendorStyle($application, $file = null, $prepend = false) {
$path = OC_Util::generatePath($application, 'vendor', $file);
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self::addExternalResource($application, $prepend, $path, "style");
}
/**
* add an external resource css/js file
*
* @param string $application application id
* @param bool $prepend prepend the file to the beginning of the list
* @param string $path
* @param string $type (script or style)
* @return void
*/
private static function addExternalResource($application, $prepend, $path, $type = "script") {
if ($type === "style") {
if (!in_array($path, self::$styles)) {
if ($prepend === true) {
array_unshift ( self::$styles, $path );
} else {
self::$styles[] = $path;
}
}
} elseif ($type === "script") {
if (!in_array($path, self::$scripts)) {
if ($prepend === true) {
array_unshift ( self::$scripts, $path );
} else {
self::$scripts [] = $path;
}
}
}
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}
/**
* Add a custom element to the header
* If $text is null then the element will be written as empty element.
* So use "" to get a closing tag.
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* @param string $tag tag name of the element
* @param array $attributes array of attributes for the element
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* @param string $text the text content for the element
*/
public static function addHeader($tag, $attributes, $text=null) {
self::$headers[] = array(
'tag' => $tag,
'attributes' => $attributes,
'text' => $text
);
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}
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/**
* formats a timestamp in the "right" way
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*
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* @param int $timestamp
* @param bool $dateOnly option to omit time from the result
* @param DateTimeZone|string $timeZone where the given timestamp shall be converted to
* @return string timestamp
*
* @deprecated Use \OC::$server->query('DateTimeFormatter') instead
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*/
public static function formatDate($timestamp, $dateOnly = false, $timeZone = null) {
if ($timeZone !== null && !$timeZone instanceof \DateTimeZone) {
$timeZone = new \DateTimeZone($timeZone);
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}
/** @var \OC\DateTimeFormatter $formatter */
$formatter = \OC::$server->query('DateTimeFormatter');
if ($dateOnly) {
return $formatter->formatDate($timestamp, 'long', $timeZone);
}
return $formatter->formatDateTime($timestamp, 'long', 'long', $timeZone);
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}
/**
* check if the current server configuration is suitable for ownCloud
*
* @param \OCP\IConfig $config
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* @return array arrays with error messages and hints
*/
public static function checkServer(\OCP\IConfig $config) {
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$l = \OC::$server->getL10N('lib');
$errors = array();
$CONFIG_DATADIRECTORY = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data');
if (!self::needUpgrade($config) && $config->getSystemValue('installed', false)) {
// this check needs to be done every time
$errors = self::checkDataDirectoryValidity($CONFIG_DATADIRECTORY);
}
// Assume that if checkServer() succeeded before in this session, then all is fine.
if (\OC::$server->getSession()->exists('checkServer_succeeded') && \OC::$server->getSession()->get('checkServer_succeeded')) {
return $errors;
}
$webServerRestart = false;
$setup = new \OC\Setup($config, \OC::$server->getIniWrapper(), \OC::$server->getL10N('lib'),
new \OC_Defaults(), \OC::$server->getLogger(), \OC::$server->getSecureRandom());
$urlGenerator = \OC::$server->getURLGenerator();
$availableDatabases = $setup->getSupportedDatabases();
if (empty($availableDatabases)) {
$errors[] = array(
'error' => $l->t('No database drivers (sqlite, mysql, or postgresql) installed.'),
'hint' => '' //TODO: sane hint
);
$webServerRestart = true;
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}
// Check if server running on Windows platform
if(OC_Util::runningOnWindows()) {
$errors[] = [
'error' => $l->t('Microsoft Windows Platform is not supported'),
'hint' => $l->t('Running ownCloud Server on the Microsoft Windows platform is not supported. We suggest you ' .
'use a Linux server in a virtual machine if you have no option for migrating the server itself. ' .
'Find Linux packages as well as easy to deploy virtual machine images on <a href="%s">%s</a>. ' .
'For migrating existing installations to Linux you can find some tips and a migration script ' .
'in <a href="%s">our documentation</a>.',
['https://owncloud.org/install/', 'owncloud.org/install/', 'https://owncloud.org/?p=8045'])
];
}
// Check if config folder is writable.
if(!OC_Helper::isReadOnlyConfigEnabled()) {
if (!is_writable(OC::$configDir) or !is_readable(OC::$configDir)) {
$errors[] = array(
'error' => $l->t('Cannot write into "config" directory'),
'hint' => $l->t('This can usually be fixed by '
. '%sgiving the webserver write access to the config directory%s.',
array('<a href="' . $urlGenerator->linkToDocs('admin-dir_permissions') . '" target="_blank">', '</a>'))
);
}
}
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// Check if there is a writable install folder.
if ($config->getSystemValue('appstoreenabled', true)) {
if (OC_App::getInstallPath() === null
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|| !is_writable(OC_App::getInstallPath())
|| !is_readable(OC_App::getInstallPath())
) {
Merge https://github.com/owncloud/core/pull/3827 Squashed commit of the following: commit eed4b49cebcbcc252a75ed85097730b73213b0da Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 8 10:03:23 2013 +0200 initialize OC_Defaults only once commit bf6f07ccc8fb87535a069ca341789a590cb187ee Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 8 10:02:48 2013 +0200 link to doc in error messages commit ea61ee60e06ee98f2671aec1fdaff666c50f47c2 Merge: e41af3d 3c1308f Author: Björn Schießle <schiessle@owncloud.com> Date: Thu Jul 4 11:10:56 2013 +0200 Merge branch 'master' into better-messages commit e41af3d7bad26aa5ca9ab21ec7dcbadd3cfe5d4f Author: Björn Schießle <schiessle@owncloud.com> Date: Thu Jul 4 11:10:41 2013 +0200 move to non-static defaults.php commit 9e4258b1905244bdf34943a825421f041cbed43d Author: Björn Schießle <schiessle@owncloud.com> Date: Tue Jul 2 10:32:13 2013 +0200 no sprintf here, lets t() handle it commit fe1df349e248667a137f70d78b04225e5b42a111 Merge: d8f6859 cb5811b Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 1 11:13:38 2013 +0200 Merge branch 'master' into better-messages commit d8f68595df2dc0e0917d916cbde511ec5333010b Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 1 11:10:57 2013 +0200 use document base url from defaults.php commit 6c5403748a45717125a2aa375550f05646317d72 Merge: bea6b1c 7b0e3e6 Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 1 11:00:15 2013 +0200 Merge branch 'master' into better-messages commit bea6b1c8a0968846065b9153e0a3f46a4e3245ee Author: Jan-Christoph Borchardt <hey@jancborchardt.net> Date: Mon Jun 24 16:21:12 2013 +0200 link to docs in WebDAV message, ref #3791 commit 3119b364a1094769e711283d1ce9014505f64ab9 Author: Jan-Christoph Borchardt <hey@jancborchardt.net> Date: Mon Jun 24 16:10:21 2013 +0200 link to docs in error messages, fix #3819
2013-07-08 12:07:57 +04:00
$errors[] = array(
'error' => $l->t('Cannot write into "apps" directory'),
'hint' => $l->t('This can usually be fixed by '
. '%sgiving the webserver write access to the apps directory%s'
. ' or disabling the appstore in the config file.',
array('<a href="' . $urlGenerator->linkToDocs('admin-dir_permissions') . '" target="_blank">', '</a>'))
);
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}
}
// Create root dir.
if ($config->getSystemValue('installed', false)) {
if (!is_dir($CONFIG_DATADIRECTORY)) {
$success = @mkdir($CONFIG_DATADIRECTORY);
if ($success) {
$errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY));
} else {
$errors[] = array(
'error' => $l->t('Cannot create "data" directory (%s)', array($CONFIG_DATADIRECTORY)),
'hint' => $l->t('This can usually be fixed by '
. '<a href="%s" target="_blank">giving the webserver write access to the root directory</a>.',
array($urlGenerator->linkToDocs('admin-dir_permissions')))
);
}
} else if (!is_writable($CONFIG_DATADIRECTORY) or !is_readable($CONFIG_DATADIRECTORY)) {
//common hint for all file permissions error messages
$permissionsHint = $l->t('Permissions can usually be fixed by '
. '%sgiving the webserver write access to the root directory%s.',
array('<a href="' . $urlGenerator->linkToDocs('admin-dir_permissions') . '" target="_blank">', '</a>'));
Merge https://github.com/owncloud/core/pull/3827 Squashed commit of the following: commit eed4b49cebcbcc252a75ed85097730b73213b0da Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 8 10:03:23 2013 +0200 initialize OC_Defaults only once commit bf6f07ccc8fb87535a069ca341789a590cb187ee Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 8 10:02:48 2013 +0200 link to doc in error messages commit ea61ee60e06ee98f2671aec1fdaff666c50f47c2 Merge: e41af3d 3c1308f Author: Björn Schießle <schiessle@owncloud.com> Date: Thu Jul 4 11:10:56 2013 +0200 Merge branch 'master' into better-messages commit e41af3d7bad26aa5ca9ab21ec7dcbadd3cfe5d4f Author: Björn Schießle <schiessle@owncloud.com> Date: Thu Jul 4 11:10:41 2013 +0200 move to non-static defaults.php commit 9e4258b1905244bdf34943a825421f041cbed43d Author: Björn Schießle <schiessle@owncloud.com> Date: Tue Jul 2 10:32:13 2013 +0200 no sprintf here, lets t() handle it commit fe1df349e248667a137f70d78b04225e5b42a111 Merge: d8f6859 cb5811b Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 1 11:13:38 2013 +0200 Merge branch 'master' into better-messages commit d8f68595df2dc0e0917d916cbde511ec5333010b Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 1 11:10:57 2013 +0200 use document base url from defaults.php commit 6c5403748a45717125a2aa375550f05646317d72 Merge: bea6b1c 7b0e3e6 Author: Björn Schießle <schiessle@owncloud.com> Date: Mon Jul 1 11:00:15 2013 +0200 Merge branch 'master' into better-messages commit bea6b1c8a0968846065b9153e0a3f46a4e3245ee Author: Jan-Christoph Borchardt <hey@jancborchardt.net> Date: Mon Jun 24 16:21:12 2013 +0200 link to docs in WebDAV message, ref #3791 commit 3119b364a1094769e711283d1ce9014505f64ab9 Author: Jan-Christoph Borchardt <hey@jancborchardt.net> Date: Mon Jun 24 16:10:21 2013 +0200 link to docs in error messages, fix #3819
2013-07-08 12:07:57 +04:00
$errors[] = array(
'error' => 'Data directory (' . $CONFIG_DATADIRECTORY . ') not writable by ownCloud',
'hint' => $permissionsHint
);
} else {
$errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY));
}
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}
if (!OC_Util::isSetLocaleWorking()) {
$errors[] = array(
'error' => $l->t('Setting locale to %s failed',
array('en_US.UTF-8/fr_FR.UTF-8/es_ES.UTF-8/de_DE.UTF-8/ru_RU.UTF-8/'
. 'pt_BR.UTF-8/it_IT.UTF-8/ja_JP.UTF-8/zh_CN.UTF-8')),
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'hint' => $l->t('Please install one of these locales on your system and restart your webserver.')
);
}
// Contains the dependencies that should be checked against
// classes = class_exists
// functions = function_exists
// defined = defined
// ini = ini_get
// If the dependency is not found the missing module name is shown to the EndUser
// When adding new checks always verify that they pass on Travis as well
// for ini settings, see https://github.com/owncloud/administration/blob/master/travis-ci/custom.ini
$dependencies = array(
'classes' => array(
'ZipArchive' => 'zip',
'DOMDocument' => 'dom',
'XMLWriter' => 'XMLWriter'
),
'functions' => [
'xml_parser_create' => 'libxml',
'mb_detect_encoding' => 'mb multibyte',
'ctype_digit' => 'ctype',
'json_encode' => 'JSON',
'gd_info' => 'GD',
'gzencode' => 'zlib',
'iconv' => 'iconv',
'simplexml_load_string' => 'SimpleXML',
'hash' => 'HASH Message Digest Framework',
'curl_init' => 'cURL',
],
'defined' => array(
'PDO::ATTR_DRIVER_NAME' => 'PDO'
),
'ini' => [
'default_charset' => 'UTF-8',
],
);
$missingDependencies = array();
$invalidIniSettings = [];
$moduleHint = $l->t('Please ask your server administrator to install the module.');
/**
* FIXME: The dependency check does not work properly on HHVM on the moment
* and prevents installation. Once HHVM is more compatible with our
* approach to check for these values we should re-enable those
* checks.
*/
$iniWrapper = \OC::$server->getIniWrapper();
if (!self::runningOnHhvm()) {
foreach ($dependencies['classes'] as $class => $module) {
if (!class_exists($class)) {
$missingDependencies[] = $module;
}
}
foreach ($dependencies['functions'] as $function => $module) {
if (!function_exists($function)) {
$missingDependencies[] = $module;
}
}
foreach ($dependencies['defined'] as $defined => $module) {
if (!defined($defined)) {
$missingDependencies[] = $module;
}
}
foreach ($dependencies['ini'] as $setting => $expected) {
if (is_bool($expected)) {
if ($iniWrapper->getBool($setting) !== $expected) {
$invalidIniSettings[] = [$setting, $expected];
}
}
if (is_int($expected)) {
if ($iniWrapper->getNumeric($setting) !== $expected) {
$invalidIniSettings[] = [$setting, $expected];
}
}
if (is_string($expected)) {
if (strtolower($iniWrapper->getString($setting)) !== strtolower($expected)) {
$invalidIniSettings[] = [$setting, $expected];
}
}
}
}
foreach($missingDependencies as $missingDependency) {
$errors[] = array(
'error' => $l->t('PHP module %s not installed.', array($missingDependency)),
'hint' => $moduleHint
);
$webServerRestart = true;
}
foreach($invalidIniSettings as $setting) {
if(is_bool($setting[1])) {
$setting[1] = ($setting[1]) ? 'on' : 'off';
}
$errors[] = [
'error' => $l->t('PHP setting "%s" is not set to "%s".', [$setting[0], var_export($setting[1], true)]),
'hint' => $l->t('Adjusting this setting in php.ini will make ownCloud run again')
];
$webServerRestart = true;
}
/**
* The mbstring.func_overload check can only be performed if the mbstring
* module is installed as it will return null if the checking setting is
* not available and thus a check on the boolean value fails.
*
* TODO: Should probably be implemented in the above generic dependency
* check somehow in the long-term.
*/
if($iniWrapper->getBool('mbstring.func_overload') !== null &&
$iniWrapper->getBool('mbstring.func_overload') === true) {
$errors[] = array(
'error' => $l->t('mbstring.func_overload is set to "%s" instead of the expected value "0"', [$iniWrapper->getString('mbstring.func_overload')]),
'hint' => $l->t('To fix this issue set <code>mbstring.func_overload</code> to <code>0</code> in your php.ini')
);
}
if (!self::isAnnotationsWorking()) {
$errors[] = array(
'error' => $l->t('PHP is apparently set up to strip inline doc blocks. This will make several core apps inaccessible.'),
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'hint' => $l->t('This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.')
);
}
if (!\OC::$CLI && $webServerRestart) {
$errors[] = array(
'error' => $l->t('PHP modules have been installed, but they are still listed as missing?'),
'hint' => $l->t('Please ask your server administrator to restart the web server.')
);
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}
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$errors = array_merge($errors, self::checkDatabaseVersion());
// Cache the result of this function
\OC::$server->getSession()->set('checkServer_succeeded', count($errors) == 0);
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return $errors;
}
/**
* Check the database version
*
* @return array errors array
*/
public static function checkDatabaseVersion() {
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$l = \OC::$server->getL10N('lib');
$errors = array();
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$dbType = \OC::$server->getSystemConfig()->getValue('dbtype', 'sqlite');
if ($dbType === 'pgsql') {
// check PostgreSQL version
try {
$result = \OC_DB::executeAudited('SHOW SERVER_VERSION');
$data = $result->fetchRow();
if (isset($data['server_version'])) {
$version = $data['server_version'];
if (version_compare($version, '9.0.0', '<')) {
$errors[] = array(
'error' => $l->t('PostgreSQL >= 9 required'),
'hint' => $l->t('Please upgrade your database version')
);
}
}
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} catch (\Doctrine\DBAL\DBALException $e) {
$logger = \OC::$server->getLogger();
$logger->warning('Error occurred while checking PostgreSQL version, assuming >= 9');
$logger->logException($e);
}
}
return $errors;
}
/**
* Check for correct file permissions of data directory
*
* @param string $dataDirectory
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* @return array arrays with error messages and hints
*/
public static function checkDataDirectoryPermissions($dataDirectory) {
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$l = \OC::$server->getL10N('lib');
$errors = array();
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if (self::runningOnWindows()) {
//TODO: permissions checks for windows hosts
} else {
$permissionsModHint = $l->t('Please change the permissions to 0770 so that the directory'
. ' cannot be listed by other users.');
$perms = substr(decoct(@fileperms($dataDirectory)), -3);
if (substr($perms, -1) != '0') {
chmod($dataDirectory, 0770);
clearstatcache();
$perms = substr(decoct(@fileperms($dataDirectory)), -3);
if (substr($perms, 2, 1) != '0') {
$errors[] = array(
'error' => $l->t('Data directory (%s) is readable by other users', array($dataDirectory)),
'hint' => $permissionsModHint
);
}
}
}
return $errors;
}
/**
* Check that the data directory exists and is valid by
* checking the existence of the ".ocdata" file.
*
* @param string $dataDirectory data directory path
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* @return array errors found
*/
public static function checkDataDirectoryValidity($dataDirectory) {
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$l = \OC::$server->getL10N('lib');
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$errors = [];
if (!self::runningOnWindows() && $dataDirectory[0] !== '/') {
$errors[] = [
'error' => $l->t('Data directory (%s) must be an absolute path', [$dataDirectory]),
'hint' => $l->t('Check the value of "datadirectory" in your configuration')
];
}
if (!file_exists($dataDirectory . '/.ocdata')) {
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$errors[] = [
'error' => $l->t('Data directory (%s) is invalid', [$dataDirectory]),
'hint' => $l->t('Please check that the data directory contains a file' .
' ".ocdata" in its root.')
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];
}
return $errors;
}
/**
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* @param array $errors
* @param string[] $messages
*/
public static function displayLoginPage($errors = array(), $messages = []) {
$parameters = array();
foreach ($errors as $value) {
$parameters[$value] = true;
}
$parameters['messages'] = $messages;
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if (!empty($_REQUEST['user'])) {
$parameters["username"] = $_REQUEST['user'];
$parameters['user_autofocus'] = false;
} else {
$parameters["username"] = '';
$parameters['user_autofocus'] = true;
}
if (isset($_REQUEST['redirect_url'])) {
$parameters['redirect_url'] = $_REQUEST['redirect_url'];
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}
$parameters['canResetPassword'] = true;
if (!\OC::$server->getSystemConfig()->getValue('lost_password_link')) {
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if (isset($_REQUEST['user'])) {
$user = \OC::$server->getUserManager()->get($_REQUEST['user']);
if ($user instanceof IUser) {
$parameters['canResetPassword'] = $user->canChangePassword();
}
}
}
$parameters['alt_login'] = OC_App::getAlternativeLogIns();
$parameters['rememberLoginAllowed'] = self::rememberLoginAllowed();
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\OC_Hook::emit('OC_Util', 'pre_displayLoginPage', array('parameters' => $parameters));
OC_Template::printGuestPage("", "login", $parameters);
}
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/**
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* Check if the user is logged in, redirects to home if not. With
* redirect URL parameter to the request URI.
*
* @return void
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*/
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public static function checkLoggedIn() {
// Check if we are a user
if (!OC_User::isLoggedIn()) {
header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php',
[
'redirect_url' => \OC::$server->getRequest()->getRequestUri()
]
)
);
exit();
}
}
/**
* Check if the user is a admin, redirects to home if not
*
* @return void
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*/
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public static function checkAdminUser() {
OC_Util::checkLoggedIn();
if (!OC_User::isAdminUser(OC_User::getUser())) {
header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
exit();
}
}
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/**
* Check if it is allowed to remember login.
*
* @note Every app can set 'rememberlogin' to 'false' to disable the remember login feature
*
* @return bool
*/
public static function rememberLoginAllowed() {
$apps = OC_App::getEnabledApps();
foreach ($apps as $app) {
$appInfo = OC_App::getAppInfo($app);
if (isset($appInfo['rememberlogin']) && $appInfo['rememberlogin'] === 'false') {
return false;
}
}
return true;
}
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/**
* Check if the user is a subadmin, redirects to home if not
*
* @return null|boolean $groups where the current user is subadmin
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*/
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public static function checkSubAdminUser() {
OC_Util::checkLoggedIn();
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$userObject = \OC::$server->getUserSession()->getUser();
$isSubAdmin = false;
if($userObject !== null) {
$isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
}
if (!$isSubAdmin) {
header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
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exit();
}
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return true;
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}
/**
* Returns the URL of the default page
* based on the system configuration and
* the apps visible for the current user
*
* @return string URL
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*/
public static function getDefaultPageUrl() {
$urlGenerator = \OC::$server->getURLGenerator();
// Deny the redirect if the URL contains a @
// This prevents unvalidated redirects like ?redirect_url=:user@domain.com
if (isset($_REQUEST['redirect_url']) && strpos($_REQUEST['redirect_url'], '@') === false) {
$location = $urlGenerator->getAbsoluteURL(urldecode($_REQUEST['redirect_url']));
} else {
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$defaultPage = \OC::$server->getAppConfig()->getValue('core', 'defaultpage');
if ($defaultPage) {
$location = $urlGenerator->getAbsoluteURL($defaultPage);
} else {
$appId = 'files';
$defaultApps = explode(',', \OCP\Config::getSystemValue('defaultapp', 'files'));
// find the first app that is enabled for the current user
foreach ($defaultApps as $defaultApp) {
$defaultApp = OC_App::cleanAppId(strip_tags($defaultApp));
if (static::getAppManager()->isEnabledForUser($defaultApp)) {
$appId = $defaultApp;
break;
}
}
if(getenv('front_controller_active') === 'true') {
$location = $urlGenerator->getAbsoluteURL('/apps/' . $appId . '/');
} else {
$location = $urlGenerator->getAbsoluteURL('/index.php/apps/' . $appId . '/');
}
}
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}
return $location;
}
/**
* Redirect to the user default page
*
* @return void
*/
public static function redirectToDefaultPage() {
$location = self::getDefaultPageUrl();
header('Location: ' . $location);
exit();
}
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/**
* get an id unique for this instance
*
* @return string
*/
public static function getInstanceId() {
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$id = \OC::$server->getSystemConfig()->getValue('instanceid', null);
if (is_null($id)) {
// We need to guarantee at least one letter in instanceid so it can be used as the session_name
$id = 'oc' . \OC::$server->getSecureRandom()->generate(10, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS);
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\OC::$server->getSystemConfig()->setValue('instanceid', $id);
}
return $id;
}
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protected static $obfuscatedToken;
/**
* Register an get/post call. Important to prevent CSRF attacks.
*
* @return string The encrypted CSRF token, the shared secret is appended after the `:`.
*
* @description
* Creates a 'request token' (random) and stores it inside the session.
* Ever subsequent (ajax) request must use such a valid token to succeed,
* otherwise the request will be denied as a protection against CSRF.
*/
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public static function callRegister() {
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// Use existing token if function has already been called
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if(isset(self::$obfuscatedToken)) {
return self::$obfuscatedToken;
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}
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$tokenLength = 30;
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// Check if a token exists
if (!\OC::$server->getSession()->exists('requesttoken')) {
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// No valid token found, generate a new one.
$requestToken = \OC::$server->getSecureRandom()->generate($tokenLength);
\OC::$server->getSession()->set('requesttoken', $requestToken);
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} else {
// Valid token already exists, send it
$requestToken = \OC::$server->getSession()->get('requesttoken');
}
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// XOR the token to mitigate breach-like attacks
$sharedSecret = \OC::$server->getSecureRandom()->generate($tokenLength);
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self::$obfuscatedToken = base64_encode($requestToken ^ $sharedSecret) .':'.$sharedSecret;
return self::$obfuscatedToken;
}
/**
* Public function to sanitize HTML
*
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* This function is used to sanitize HTML and should be applied on any
* string or array of strings before displaying it on a web page.
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*
* @param string|array $value
* @return string|array an array of sanitized strings or a single sanitized string, depends on the input parameter.
*/
public static function sanitizeHTML($value) {
if (is_array($value)) {
$value = array_map(function($value) {
return self::sanitizeHTML($value);
}, $value);
} else {
// Specify encoding for PHP<5.4
$value = htmlspecialchars((string)$value, ENT_QUOTES, 'UTF-8');
}
return $value;
}
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/**
* Public function to encode url parameters
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*
* This function is used to encode path to file before output.
* Encoding is done according to RFC 3986 with one exception:
* Character '/' is preserved as is.
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*
* @param string $component part of URI to encode
* @return string
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*/
public static function encodePath($component) {
$encoded = rawurlencode($component);
$encoded = str_replace('%2F', '/', $encoded);
return $encoded;
}
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/**
* Check if the .htaccess file is working
* @param \OCP\IConfig $config
* @return bool
* @throws Exception
* @throws \OC\HintException If the test file can't get written.
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*/
public function isHtaccessWorking(\OCP\IConfig $config) {
if (\OC::$CLI || !$config->getSystemValue('check_for_working_htaccess', true)) {
return true;
}
// php dev server does not support htaccess
if (php_sapi_name() === 'cli-server') {
return false;
}
// testdata
$fileName = '/htaccesstest.txt';
$testContent = 'testcontent';
// creating a test file
$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
if (file_exists($testFile)) {// already running this test, possible recursive call
return false;
}
$fp = @fopen($testFile, 'w');
if (!$fp) {
throw new OC\HintException('Can\'t create test file to check for working .htaccess file.',
'Make sure it is possible for the webserver to write to ' . $testFile);
}
fwrite($fp, $testContent);
fclose($fp);
// accessing the file via http
$url = \OC::$server->getURLGenerator()->getAbsoluteURL(OC::$WEBROOT . '/data' . $fileName);
try {
$content = \OC::$server->getHTTPClientService()->newClient()->get($url)->getBody();
} catch (\Exception $e) {
$content = false;
}
// cleanup
@unlink($testFile);
/*
* If the content is not equal to test content our .htaccess
* is working as required
*/
return $content !== $testContent;
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}
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/**
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* Check if the setlocal call does not work. This can happen if the right
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* local packages are not available on the server.
*
* @return bool
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*/
public static function isSetLocaleWorking() {
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// setlocale test is pointless on Windows
if (OC_Util::runningOnWindows()) {
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return true;
}
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\Patchwork\Utf8\Bootup::initLocale();
if ('' === basename('§')) {
return false;
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}
return true;
}
/**
* Check if it's possible to get the inline annotations
*
* @return bool
*/
public static function isAnnotationsWorking() {
$reflection = new \ReflectionMethod(__METHOD__);
$docs = $reflection->getDocComment();
return (is_string($docs) && strlen($docs) > 50);
}
/**
* Check if the PHP module fileinfo is loaded.
*
* @return bool
*/
public static function fileInfoLoaded() {
return function_exists('finfo_open');
}
/**
* clear all levels of output buffering
*
* @return void
*/
public static function obEnd() {
while (ob_get_level()) {
ob_end_clean();
}
}
/**
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* Checks whether the server is running on Windows
*
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* @return bool true if running on Windows, false otherwise
*/
public static function runningOnWindows() {
return (substr(PHP_OS, 0, 3) === "WIN");
}
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/**
* Checks whether the server is running on Mac OS X
*
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* @return bool true if running on Mac OS X, false otherwise
*/
public static function runningOnMac() {
return (strtoupper(substr(PHP_OS, 0, 6)) === 'DARWIN');
}
/**
* Checks whether server is running on HHVM
*
* @return bool True if running on HHVM, false otherwise
*/
public static function runningOnHhvm() {
return defined('HHVM_VERSION');
}
/**
* Handles the case that there may not be a theme, then check if a "default"
* theme exists and take that one
*
* @return string the theme
*/
public static function getTheme() {
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$theme = \OC::$server->getSystemConfig()->getValue("theme", '');
if ($theme === '') {
if (is_dir(OC::$SERVERROOT . '/themes/default')) {
$theme = 'default';
}
}
return $theme;
}
/**
* Clear a single file from the opcode cache
* This is useful for writing to the config file
* in case the opcode cache does not re-validate files
* Returns true if successful, false if unsuccessful:
* caller should fall back on clearing the entire cache
* with clearOpcodeCache() if unsuccessful
*
* @param string $path the path of the file to clear from the cache
* @return bool true if underlying function returns true, otherwise false
*/
public static function deleteFromOpcodeCache($path) {
$ret = false;
if ($path) {
// APC >= 3.1.1
if (function_exists('apc_delete_file')) {
$ret = @apc_delete_file($path);
}
// Zend OpCache >= 7.0.0, PHP >= 5.5.0
if (function_exists('opcache_invalidate')) {
$ret = opcache_invalidate($path);
}
}
return $ret;
}
/**
* Clear the opcode cache if one exists
* This is necessary for writing to the config file
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* in case the opcode cache does not re-validate files
*
* @return void
*/
public static function clearOpcodeCache() {
// APC
if (function_exists('apc_clear_cache')) {
apc_clear_cache();
}
// Zend Opcache
if (function_exists('accelerator_reset')) {
accelerator_reset();
}
// XCache
if (function_exists('xcache_clear_cache')) {
if (\OC::$server->getIniWrapper()->getBool('xcache.admin.enable_auth')) {
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\OCP\Util::writeLog('core', 'XCache opcode cache will not be cleared because "xcache.admin.enable_auth" is enabled.', \OCP\Util::WARN);
} else {
@xcache_clear_cache(XC_TYPE_PHP, 0);
}
}
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// Opcache (PHP >= 5.5)
if (function_exists('opcache_reset')) {
opcache_reset();
}
}
/**
* Normalize a unicode string
*
* @param string $value a not normalized string
* @return bool|string
*/
public static function normalizeUnicode($value) {
if(Normalizer::isNormalized($value)) {
return $value;
}
$normalizedValue = Normalizer::normalize($value);
if ($normalizedValue === null || $normalizedValue === false) {
\OC::$server->getLogger()->warning('normalizing failed for "' . $value . '"', ['app' => 'core']);
return $value;
}
return $normalizedValue;
}
/**
* @param boolean|string $file
* @return string
*/
public static function basename($file) {
$file = rtrim($file, '/');
$t = explode('/', $file);
return array_pop($t);
}
/**
* A human readable string is generated based on version, channel and build number
*
* @return string
*/
public static function getHumanVersion() {
$version = OC_Util::getVersionString() . ' (' . OC_Util::getChannel() . ')';
$build = OC_Util::getBuild();
if (!empty($build) and OC_Util::getChannel() === 'daily') {
$version .= ' Build:' . $build;
}
return $version;
}
/**
* Returns whether the given file name is valid
*
* @param string $file file name to check
* @return bool true if the file name is valid, false otherwise
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* @deprecated use \OC\Files\View::verifyPath()
*/
public static function isValidFileName($file) {
$trimmed = trim($file);
if ($trimmed === '') {
return false;
}
if (\OC\Files\Filesystem::isIgnoredDir($trimmed)) {
return false;
}
foreach (str_split($trimmed) as $char) {
if (strpos(\OCP\Constants::FILENAME_INVALID_CHARS, $char) !== false) {
return false;
}
}
return true;
}
/**
* Check whether the instance needs to perform an upgrade,
* either when the core version is higher or any app requires
* an upgrade.
*
* @param \OCP\IConfig $config
* @return bool whether the core or any app needs an upgrade
* @throws \OC\HintException When the upgrade from the given version is not allowed
*/
public static function needUpgrade(\OCP\IConfig $config) {
if ($config->getSystemValue('installed', false)) {
$installedVersion = $config->getSystemValue('version', '0.0.0');
$currentVersion = implode('.', \OCP\Util::getVersion());
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$versionDiff = version_compare($currentVersion, $installedVersion);
if ($versionDiff > 0) {
return true;
} else if ($config->getSystemValue('debug', false) && $versionDiff < 0) {
// downgrade with debug
$installedMajor = explode('.', $installedVersion);
$installedMajor = $installedMajor[0] . '.' . $installedMajor[1];
$currentMajor = explode('.', $currentVersion);
$currentMajor = $currentMajor[0] . '.' . $currentMajor[1];
if ($installedMajor === $currentMajor) {
// Same major, allow downgrade for developers
return true;
} else {
// downgrade attempt, throw exception
throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
}
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} else if ($versionDiff < 0) {
// downgrade attempt, throw exception
throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
}
// also check for upgrades for apps (independently from the user)
$apps = \OC_App::getEnabledApps(false, true);
$shouldUpgrade = false;
foreach ($apps as $app) {
if (\OC_App::shouldUpgrade($app)) {
$shouldUpgrade = true;
break;
}
}
return $shouldUpgrade;
} else {
return false;
}
}
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}