getAppManager(); } private static function initLocalStorageRootFS() { // mount local file backend as root $configDataDirectory = OC_Config::getValue("datadirectory", OC::$SERVERROOT . "/data"); //first set up the local "root" storage \OC\Files\Filesystem::initMounts(); 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 $config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage'; // mount object storage as root \OC\Files\Filesystem::initMounts(); if (!self::$rootMounted) { \OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/'); self::$rootMounted = true; } } /** * Can be set up * * @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::$fsSetup) { return false; } \OC::$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; } //check if we are using an object storage $objectStore = OC_Config::getValue('objectstore'); if (isset($objectStore)) { self::initObjectStoreRootFS($objectStore); } else { self::initLocalStorageRootFS(); } if ($user != '' && !OCP\User::userExists($user)) { \OC::$server->getEventLogger()->end('setup_fs'); return false; } //if we aren't logged in, there is no use to set up the filesystem if ($user != "") { \OC\Files\Filesystem::addStorageWrapper('oc_quota', function ($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') || $storage->instanceOfStorage('\OC\Files\ObjectStore\HomeObjectStoreStorage') ) { if (is_object($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; }); $userDir = '/' . $user . '/files'; //jail the user into his "home" directory \OC\Files\Filesystem::init($user, $userDir); $fileOperationProxy = new OC_FileProxy_FileOperations(); OC_FileProxy::register($fileOperationProxy); //trigger creation of user home and /files folder \OC::$server->getUserFolder($user); OC_Hook::emit('OC_Filesystem', 'setup', array('user' => $user, 'user_dir' => $userDir)); } \OC::$server->getEventLogger()->end('setup_fs'); return true; } /** * 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 * * @return boolean */ public static function isSharingDisabledForUser() { if (\OC_Appconfig::getValue('core', 'shareapi_exclude_groups', 'no') === 'yes') { $user = \OCP\User::getUser(); $groupsList = \OC_Appconfig::getValue('core', 'shareapi_exclude_groups_list', ''); $excludedGroups = explode(',', $groupsList); $usersGroups = \OC_Group::getUserGroups($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; } /** * Get the quota of a user * * @param string $user * @return int Quota bytes */ public static function getUserQuota($user) { $config = \OC::$server->getConfig(); $userQuota = $config->getUserValue($user, 'files', 'quota', 'default'); if ($userQuota === 'default') { $userQuota = $config->getAppValue('files', 'default_quota', 'none'); } if($userQuota === 'none') { return \OCP\Files\FileInfo::SPACE_UNLIMITED; }else{ return OC_Helper::computerFileSize($userQuota); } } /** * copies the skeleton to the users /files * * @param \OC\User\User $user * @param \OCP\Files\Folder $userDirectory */ public static function copySkeleton(\OC\User\User $user, \OCP\Files\Folder $userDirectory) { $skeletonDirectory = \OCP\Config::getSystemValue('skeletondirectory', \OC::$SERVERROOT . '/core/skeleton'); if (!empty($skeletonDirectory)) { \OCP\Util::writeLog( 'files_skeleton', 'copying skeleton for '.$user->getUID().' 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); } } /** * 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 */ public static function tearDownFS() { \OC\Files\Filesystem::tearDown(); self::$fsSetup = false; self::$rootMounted = false; } /** * get the current installed version of ownCloud * * @return array */ public static function getVersion() { OC_Util::loadVersion(); return \OC::$server->getSession()->get('OC_Version'); } /** * get the current installed version string of ownCloud * * @return string */ public static function getVersionString() { OC_Util::loadVersion(); return \OC::$server->getSession()->get('OC_VersionString'); } /** * @description get the current installed edition of ownCloud. There is the community * edition that just returns an empty string and the enterprise edition * that returns "Enterprise". * @return string */ 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 '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_Channel string */ $session->set('OC_Channel', $OC_Channel); /** @var $OC_Build string */ $session->set('OC_Build', $OC_Build); } } /** * generates a path for JS/CSS files. If no application is provided it will create the path for core. * * @param string $application application to get the files from * @param string $directory directory withing this application (css, js, vendor, etc) * @param string $file the file inside of the above folder * @return string the path */ private static function generatePath($application, $directory, $file) { if (is_null($file)) { $file = $application; $application = ""; } if (!empty($application)) { return "$application/$directory/$file"; } else { return "$directory/$file"; } } /** * add a javascript file * * @param string $application application id * @param string|null $file filename * @return void */ public static function addScript($application, $file = null) { $path = OC_Util::generatePath($application, 'js', $file); if (!in_array($path, self::$scripts)) { // core js files need separate handling if ($application !== 'core' && $file !== null) { self::addTranslations($application); } self::$scripts[] = $path; } } /** * add a javascript file from the vendor sub folder * * @param string $application application id * @param string|null $file filename * @return void */ public static function addVendorScript($application, $file = null) { $path = OC_Util::generatePath($application, 'vendor', $file); if (!in_array($path, self::$scripts)) { self::$scripts[] = $path; } } /** * add a translation JS file * * @param string $application application id * @param string $languageCode language code, defaults to the current language */ public static function addTranslations($application, $languageCode = null) { if (is_null($languageCode)) { $languageCode = \OC_L10N::findLanguage($application); } if (!empty($application)) { $path = "$application/l10n/$languageCode"; } else { $path = "l10n/$languageCode"; } if (!in_array($path, self::$scripts)) { self::$scripts[] = $path; } } /** * add a css file * * @param string $application application id * @param string|null $file filename * @return void */ public static function addStyle($application, $file = null) { $path = OC_Util::generatePath($application, 'css', $file); if (!in_array($path, self::$styles)) { self::$styles[] = $path; } } /** * add a css file from the vendor sub folder * * @param string $application application id * @param string|null $file filename * @return void */ public static function addVendorStyle($application, $file = null) { $path = OC_Util::generatePath($application, 'vendor', $file); if (!in_array($path, self::$styles)) { self::$styles[] = $path; } } /** * 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. * @param string $tag tag name of the element * @param array $attributes array of attributes for the element * @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 ); } /** * formats a timestamp in the "right" way * * @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 */ public static function formatDate($timestamp, $dateOnly = false, $timeZone = null) { if ($timeZone !== null && !$timeZone instanceof \DateTimeZone) { $timeZone = new \DateTimeZone($timeZone); } /** @var \OC\DateTimeFormatter $formatter */ $formatter = \OC::$server->query('DateTimeFormatter'); if ($dateOnly) { return $formatter->formatDate($timestamp, 'long', $timeZone); } return $formatter->formatDateTime($timestamp, 'long', 'long', $timeZone); } /** * check if the current server configuration is suitable for ownCloud * * @param \OCP\IConfig $config * @return array arrays with error messages and hints */ public static function checkServer(\OCP\IConfig $config) { $l = \OC::$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); $availableDatabases = $setup->getSupportedDatabases(); if (empty($availableDatabases)) { $errors[] = array( 'error' => $l->t('No database drivers (sqlite, mysql, or postgresql) installed.'), 'hint' => '' //TODO: sane hint ); $webServerRestart = true; } // Check if config folder is writable. if (!is_writable(OC::$configDir) or !is_readable(OC::$configDir)) { $errors[] = array( 'error' => $l->t('Cannot write into "config" directory'), 'hint' => $l->t('This can usually be fixed by ' . '%sgiving the webserver write access to the config directory%s.', array('', '')) ); } // Check if there is a writable install folder. if ($config->getSystemValue('appstoreenabled', true)) { if (OC_App::getInstallPath() === null || !is_writable(OC_App::getInstallPath()) || !is_readable(OC_App::getInstallPath()) ) { $errors[] = array( 'error' => $l->t('Cannot write into "apps" directory'), 'hint' => $l->t('This can usually be fixed by ' . '%sgiving the webserver write access to the apps directory%s' . ' or disabling the appstore in the config file.', array('', '')) ); } } // Create root dir. if ($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' => $l->t('This can usually be fixed by ' . 'giving the webserver write access to the root directory.', array(OC_Helper::linkToDocs('admin-dir_permissions'))) ); } } else if (!is_writable($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('', '')); $errors[] = array( 'error' => 'Data directory (' . $CONFIG_DATADIRECTORY . ') not writable by ownCloud', 'hint' => $permissionsHint ); } else { $errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY)); } } 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')), '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' => array( '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' ), 'defined' => array( 'PDO::ATTR_DRIVER_NAME' => 'PDO' ), 'ini' => [ 'mbstring.func_overload' => 0, 'output_buffering' => false, 'default_charset' => 'UTF-8', ], ); $missingDependencies = array(); $invalidIniSettings = []; $moduleHint = $l->t('Please ask your server administrator to install the module.'); /** * FIXME: The dependency check does not work properly on HHVM on the moment * and prevents installation. Once HHVM is more compatible with our * approach to check for these values we should re-enable those * checks. */ if (!self::runningOnHhvm()) { foreach ($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) { $iniWrapper = \OC::$server->getIniWrapper(); 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; } if (version_compare(phpversion(), '5.4.0', '<')) { $errors[] = array( 'error' => $l->t('PHP %s or higher is required.', '5.4.0'), 'hint' => $l->t('Please ask your server administrator to update PHP to the latest version.' . ' Your PHP version is no longer supported by ownCloud and the PHP community.') ); $webServerRestart = true; } /** * PHP 5.6 ships with a PHP setting which throws notices by default for a * lot of endpoints. Thus we need to ensure that the value is set to -1 * * FIXME: Due to https://github.com/owncloud/core/pull/13593#issuecomment-71178078 * this check is disabled for HHVM at the moment. This should get re-evaluated * at a later point. * * @link https://github.com/owncloud/core/issues/13592 */ if(version_compare(phpversion(), '5.6.0', '>=') && !self::runningOnHhvm() && \OC::$server->getIniWrapper()->getNumeric('always_populate_raw_post_data') !== -1) { $errors[] = array( 'error' => $l->t('PHP is configured to populate raw post data. Since PHP 5.6 this will lead to PHP throwing notices for perfectly valid code.'), 'hint' => $l->t('To fix this issue set always_populate_raw_post_data to -1 in your php.ini') ); } if (!self::isAnnotationsWorking()) { $errors[] = array( 'error' => $l->t('PHP is apparently setup to strip inline doc blocks. This will make several core apps inaccessible.'), 'hint' => $l->t('This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.') ); } if ($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.') ); } $errors = array_merge($errors, self::checkDatabaseVersion()); // Cache the result of this function \OC::$server->getSession()->set('checkServer_succeeded', count($errors) == 0); return $errors; } /** * Check the database version * * @return array errors array */ public static function checkDatabaseVersion() { $l = \OC::$server->getL10N('lib'); $errors = array(); $dbType = \OC_Config::getValue('dbtype', 'sqlite'); if ($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') ); } } } catch (\Doctrine\DBAL\DBALException $e) { \OCP\Util::logException('core', $e); $errors[] = array( 'error' => $l->t('Error occurred while checking PostgreSQL version'), 'hint' => $l->t('Please make sure you have PostgreSQL >= 9 or' . ' check the logs for more information about the error') ); } } return $errors; } /** * check if there are still some encrypted files stored * * @return boolean */ public static function encryptedFiles() { //check if encryption was enabled in the past $encryptedFiles = false; if (OC_App::isEnabled('files_encryption') === false) { $view = new OC\Files\View('/' . OCP\User::getUser()); $keysPath = '/files_encryption/keys'; if ($view->is_dir($keysPath)) { $dircontent = $view->getDirectoryContent($keysPath); if (!empty($dircontent)) { $encryptedFiles = true; } } } return $encryptedFiles; } /** * check if a backup from the encryption keys exists * * @return boolean */ public static function backupKeysExists() { //check if encryption was enabled in the past $backupExists = false; if (OC_App::isEnabled('files_encryption') === false) { $view = new OC\Files\View('/' . OCP\User::getUser()); $backupPath = '/files_encryption/backup.decryptAll'; if ($view->is_dir($backupPath)) { $dircontent = $view->getDirectoryContent($backupPath); if (!empty($dircontent)) { $backupExists = true; } } } return $backupExists; } /** * Check for correct file permissions of data directory * * @param string $dataDirectory * @return array arrays with error messages and hints */ public static function checkDataDirectoryPermissions($dataDirectory) { $l = \OC::$server->getL10N('lib'); $errors = array(); 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 $dataDirectory data directory path * @return bool true if the data directory is valid, false otherwise */ public static function checkDataDirectoryValidity($dataDirectory) { $l = \OC::$server->getL10N('lib'); $errors = array(); if (!file_exists($dataDirectory . '/.ocdata')) { $errors[] = array( 'error' => $l->t('Data directory (%s) is invalid', array($dataDirectory)), 'hint' => $l->t('Please check that the data directory contains a file' . ' ".ocdata" in its root.') ); } return $errors; } /** * @param array $errors * @param string[] $messages */ public static function displayLoginPage($errors = array(), $messages = []) { $parameters = array(); foreach ($errors as $value) { $parameters[$value] = true; } $parameters['messages'] = $messages; if (!empty($_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']; } $parameters['alt_login'] = OC_App::getAlternativeLogIns(); $parameters['rememberLoginAllowed'] = self::rememberLoginAllowed(); OC_Template::printGuestPage("", "login", $parameters); } /** * Check if the app is enabled, redirects to home if not * * @param string $app * @return void */ public static function checkAppEnabled($app) { if (!OC_App::isEnabled($app)) { header('Location: ' . OC_Helper::linkToAbsolute('', 'index.php')); exit(); } } /** * Check if the user is logged in, redirects to home if not. With * redirect URL parameter to the request URI. * * @return void */ public static function checkLoggedIn() { // Check if we are a user if (!OC_User::isLoggedIn()) { header('Location: ' . OC_Helper::linkToAbsolute('', 'index.php', [ 'redirect_url' => \OC::$server->getRequest()->getRequestUri() ] ) ); exit(); } } /** * Check if the user is a admin, redirects to home if not * * @return void */ public static function checkAdminUser() { OC_Util::checkLoggedIn(); if (!OC_User::isAdminUser(OC_User::getUser())) { header('Location: ' . OC_Helper::linkToAbsolute('', 'index.php')); exit(); } } /** * 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; } /** * Check if the user is a subadmin, redirects to home if not * * @return null|boolean $groups where the current user is subadmin */ public static function checkSubAdminUser() { OC_Util::checkLoggedIn(); if (!OC_SubAdmin::isSubAdmin(OC_User::getUser())) { header('Location: ' . OC_Helper::linkToAbsolute('', 'index.php')); exit(); } return true; } /** * Returns the URL of the default page * based on the system configuration and * the apps visible for the current user * * @return string URL */ 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 { $defaultPage = OC_Appconfig::getValue('core', 'defaultpage'); if ($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; } } $location = $urlGenerator->getAbsoluteURL('/index.php/apps/' . $appId . '/'); } } return $location; } /** * Redirect to the user default page * * @return void */ public static function redirectToDefaultPage() { $location = self::getDefaultPageUrl(); header('Location: ' . $location); exit(); } /** * get an id unique for this instance * * @return string */ public static function getInstanceId() { $id = OC_Config::getValue('instanceid', null); if (is_null($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()->getLowStrengthGenerator()->generate(10, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS); OC_Config::$object->setValue('instanceid', $id); } return $id; } /** * Register an get/post call. Important to prevent CSRF attacks. * * @return string Generated token. * @description * Creates a 'request token' (random) and stores it inside the session. * Ever subsequent (ajax) request must use such a valid token to succeed, * otherwise the request will be denied as a protection against CSRF. * @see OC_Util::isCallRegistered() */ public static function callRegister() { // Check if a token exists if (!\OC::$server->getSession()->exists('requesttoken')) { // No valid token found, generate a new one. $requestToken = \OC::$server->getSecureRandom()->getMediumStrengthGenerator()->generate(30); \OC::$server->getSession()->set('requesttoken', $requestToken); } else { // Valid token already exists, send it $requestToken = \OC::$server->getSession()->get('requesttoken'); } return ($requestToken); } /** * Check an ajax get/post call if the request token is valid. * * @return boolean False if request token is not set or is invalid. * @see OC_Util::callRegister() */ public static function isCallRegistered() { return \OC::$server->getRequest()->passesCSRFCheck(); } /** * Check an ajax get/post call if the request token is valid. Exit if not. * * @return void */ public static function callCheck() { if (!OC_Util::isCallRegistered()) { exit(); } } /** * Public function to sanitize HTML * * 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. * * @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($value)) { array_walk_recursive($value, 'OC_Util::sanitizeHTML'); } else { //Specify encoding for PHP<5.4 $value = htmlspecialchars((string)$value, ENT_QUOTES, 'UTF-8'); } return $value; } /** * Public function to encode url parameters * * 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. * * @param string $component part of URI to encode * @return string */ public static function encodePath($component) { $encoded = rawurlencode($component); $encoded = str_replace('%2F', '/', $encoded); return $encoded; } /** * Check if the .htaccess file is working * * @throws OC\HintException If the testfile can't get written. * @return bool * @description Check if the .htaccess file is working by creating a test * file in the data directory and trying to access via http */ public static function isHtaccessWorking() { if (\OC::$CLI || !OC::$server->getConfig()->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 $testFile = OC::$server->getConfig()->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 $url = OC_Helper::makeURLAbsolute(OC::$WEBROOT . '/data' . $fileName); $content = self::getUrlContent($url); // cleanup @unlink($testFile); /* * If the content is not equal to test content our .htaccess * is working as required */ return $content !== $testContent; } /** * Check if the setlocal call does not work. This can happen if the right * local packages are not available on the server. * * @return bool */ public static function isSetLocaleWorking() { // setlocale test is pointless on Windows if (OC_Util::runningOnWindows()) { return true; } \Patchwork\Utf8\Bootup::initLocale(); if ('' === basename('ยง')) { return false; } 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'); } /** * Check if the ownCloud server can connect to the internet * * @return bool */ public static function isInternetConnectionWorking() { // in case there is no internet connection on purpose return false if (self::isInternetConnectionEnabled() === false) { return false; } // in case the connection is via proxy return true to avoid connecting to owncloud.org if (OC_Config::getValue('proxy', '') != '') { return true; } // try to connect to owncloud.org to see if http connections to the internet are possible. $connected = @fsockopen("www.owncloud.org", 80); if ($connected) { fclose($connected); return true; } else { // second try in case one server is down $connected = @fsockopen("apps.owncloud.com", 80); if ($connected) { fclose($connected); return true; } else { return false; } } } /** * Check if the connection to the internet is disabled on purpose * * @return string */ public static function isInternetConnectionEnabled() { return \OC_Config::getValue("has_internet_connection", true); } /** * clear all levels of output buffering * * @return void */ public static function obEnd() { while (ob_get_level()) { ob_end_clean(); } } /** * Generates a cryptographic secure pseudo-random string * * @param int $length of the random string * @return string * @deprecated Use \OC::$server->getSecureRandom()->getMediumStrengthGenerator()->generate($length); instead */ public static function generateRandomBytes($length = 30) { return \OC::$server->getSecureRandom()->getMediumStrengthGenerator()->generate($length, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS); } /** * Get URL content * @param string $url Url to get content * @deprecated Use \OC::$server->getHTTPHelper()->getUrlContent($url); * @throws Exception If the URL does not start with http:// or https:// * @return string of the response or false on error * This function get the content of a page via curl, if curl is enabled. * If not, file_get_contents is used. */ public static function getUrlContent($url) { try { return \OC::$server->getHTTPHelper()->getUrlContent($url); } catch (\Exception $e) { throw $e; } } /** * Checks whether the server is running on Windows * * @return bool true if running on Windows, false otherwise */ public static function runningOnWindows() { return (substr(PHP_OS, 0, 3) === "WIN"); } /** * Checks whether the server is running on Mac OS X * * @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() { $theme = OC_Config::getValue("theme", ''); if ($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 * 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 (ini_get('xcache.admin.enable_auth')) { OC_Log::write('core', 'XCache opcode cache will not be cleared because "xcache.admin.enable_auth" is enabled.', \OC_Log::WARN); } else { xcache_clear_cache(XC_TYPE_PHP, 0); } } // 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 $file file name to check * @return bool true if the file name is valid, false otherwise */ public static function isValidFileName($file) { $trimmed = trim($file); if ($trimmed === '') { return false; } if ($trimmed === '.' || $trimmed === '..') { return false; } foreach (str_split($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 */ public static function needUpgrade(\OCP\IConfig $config) { if ($config->getSystemValue('installed', false)) { $installedVersion = $config->getSystemValue('version', '0.0.0'); $currentVersion = implode('.', OC_Util::getVersion()); if (version_compare($currentVersion, $installedVersion, '>')) { return true; } // 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; } } }