1383 lines
40 KiB
PHP
1383 lines
40 KiB
PHP
<?php
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/**
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* Class for utility functions
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*
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*/
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class OC_Util {
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public static $scripts = array();
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public static $styles = array();
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public static $headers = array();
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private static $rootMounted = false;
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private static $fsSetup = false;
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private static function initLocalStorageRootFS() {
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// mount local file backend as root
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$configDataDirectory = OC_Config::getValue("datadirectory", OC::$SERVERROOT . "/data");
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//first set up the local "root" storage
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\OC\Files\Filesystem::initMounts();
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if (!self::$rootMounted) {
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\OC\Files\Filesystem::mount('\OC\Files\Storage\Local', array('datadir' => $configDataDirectory), '/');
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self::$rootMounted = true;
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}
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}
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/**
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* mounting an object storage as the root fs will in essence remove the
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* necessity of a data folder being present.
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* TODO make home storage aware of this and use the object storage instead of local disk access
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*
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* @param array $config containing 'class' and optional 'arguments'
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*/
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private static function initObjectStoreRootFS($config) {
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// check misconfiguration
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if (empty($config['class'])) {
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\OCP\Util::writeLog('files', 'No class given for objectstore', \OCP\Util::ERROR);
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}
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if (!isset($config['arguments'])) {
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$config['arguments'] = array();
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}
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// instantiate object store implementation
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$config['arguments']['objectstore'] = new $config['class']($config['arguments']);
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// mount with plain / root object store implementation
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$config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage';
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// mount object storage as root
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\OC\Files\Filesystem::initMounts();
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if (!self::$rootMounted) {
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\OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/');
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self::$rootMounted = true;
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}
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}
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/**
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* Can be set up
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*
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* @param string $user
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* @return boolean
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* @description configure the initial filesystem based on the configuration
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*/
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public static function setupFS($user = '') {
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//setting up the filesystem twice can only lead to trouble
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if (self::$fsSetup) {
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return false;
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}
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\OC::$server->getEventLogger()->start('setup_fs', 'Setup filesystem');
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// If we are not forced to load a specific user we load the one that is logged in
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if ($user == "" && OC_User::isLoggedIn()) {
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$user = OC_User::getUser();
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}
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// load all filesystem apps before, so no setup-hook gets lost
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OC_App::loadApps(array('filesystem'));
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// the filesystem will finish when $user is not empty,
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// mark fs setup here to avoid doing the setup from loading
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// OC_Filesystem
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if ($user != '') {
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self::$fsSetup = true;
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}
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//check if we are using an object storage
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$objectStore = OC_Config::getValue('objectstore');
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if (isset($objectStore)) {
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self::initObjectStoreRootFS($objectStore);
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} else {
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self::initLocalStorageRootFS();
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}
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if ($user != '' && !OCP\User::userExists($user)) {
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\OC::$server->getEventLogger()->end('setup_fs');
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return false;
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}
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//if we aren't logged in, there is no use to set up the filesystem
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if ($user != "") {
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\OC\Files\Filesystem::addStorageWrapper('oc_quota', function ($mountPoint, $storage) {
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// set up quota for home storages, even for other users
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// which can happen when using sharing
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/**
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* @var \OC\Files\Storage\Storage $storage
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*/
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if ($storage->instanceOfStorage('\OC\Files\Storage\Home')
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|| $storage->instanceOfStorage('\OC\Files\ObjectStore\HomeObjectStoreStorage')
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) {
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if (is_object($storage->getUser())) {
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$user = $storage->getUser()->getUID();
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$quota = OC_Util::getUserQuota($user);
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if ($quota !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
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return new \OC\Files\Storage\Wrapper\Quota(array('storage' => $storage, 'quota' => $quota, 'root' => 'files'));
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}
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}
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}
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return $storage;
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});
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$userDir = '/' . $user . '/files';
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//jail the user into his "home" directory
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\OC\Files\Filesystem::init($user, $userDir);
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$fileOperationProxy = new OC_FileProxy_FileOperations();
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OC_FileProxy::register($fileOperationProxy);
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//trigger creation of user home and /files folder
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\OC::$server->getUserFolder($user);
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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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}
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/**
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* check if a password is required for each public link
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*
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* @return boolean
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*/
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public static function isPublicLinkPasswordRequired() {
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$appConfig = \OC::$server->getAppConfig();
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$enforcePassword = $appConfig->getValue('core', 'shareapi_enforce_links_password', 'no');
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return ($enforcePassword === 'yes') ? true : false;
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}
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/**
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* check if sharing is disabled for the current user
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*
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* @return boolean
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*/
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public static function isSharingDisabledForUser() {
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if (\OC_Appconfig::getValue('core', 'shareapi_exclude_groups', 'no') === 'yes') {
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$user = \OCP\User::getUser();
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$groupsList = \OC_Appconfig::getValue('core', 'shareapi_exclude_groups_list', '');
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$excludedGroups = explode(',', $groupsList);
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$usersGroups = \OC_Group::getUserGroups($user);
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if (!empty($usersGroups)) {
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$remainingGroups = array_diff($usersGroups, $excludedGroups);
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// if the user is only in groups which are disabled for sharing then
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// sharing is also disabled for the user
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if (empty($remainingGroups)) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* check if share API enforces a default expire date
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*
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* @return boolean
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*/
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public static function isDefaultExpireDateEnforced() {
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$isDefaultExpireDateEnabled = \OCP\Config::getAppValue('core', 'shareapi_default_expire_date', 'no');
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$enforceDefaultExpireDate = false;
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if ($isDefaultExpireDateEnabled === 'yes') {
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$value = \OCP\Config::getAppValue('core', 'shareapi_enforce_expire_date', 'no');
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$enforceDefaultExpireDate = ($value === 'yes') ? true : false;
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}
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return $enforceDefaultExpireDate;
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}
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/**
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* Get the quota of a user
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*
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* @param string $user
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* @return int Quota bytes
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*/
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public static function getUserQuota($user) {
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$config = \OC::$server->getConfig();
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$userQuota = $config->getUserValue($user, 'files', 'quota', 'default');
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if ($userQuota === 'default') {
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$userQuota = $config->getAppValue('files', 'default_quota', 'none');
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}
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if($userQuota === 'none') {
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return \OCP\Files\FileInfo::SPACE_UNLIMITED;
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}else{
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return OC_Helper::computerFileSize($userQuota);
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}
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}
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/**
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* copies the skeleton to the users /files
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*
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* @param \OC\User\User $user
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* @param \OCP\Files\Folder $userDirectory
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*/
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public static function copySkeleton(\OC\User\User $user, \OCP\Files\Folder $userDirectory) {
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$skeletonDirectory = \OCP\Config::getSystemValue('skeletondirectory', \OC::$SERVERROOT . '/core/skeleton');
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if (!empty($skeletonDirectory)) {
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\OCP\Util::writeLog(
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'files_skeleton',
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'copying skeleton for '.$user->getUID().' from '.$skeletonDirectory.' to '.$userDirectory->getFullPath('/'),
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\OCP\Util::DEBUG
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);
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self::copyr($skeletonDirectory, $userDirectory);
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// update the file cache
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$userDirectory->getStorage()->getScanner()->scan('', \OC\Files\Cache\Scanner::SCAN_RECURSIVE);
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}
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}
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/**
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* copies a directory recursively by using streams
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*
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* @param string $source
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* @param \OCP\Files\Folder $target
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* @return void
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*/
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public static function copyr($source, \OCP\Files\Folder $target) {
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$dir = opendir($source);
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while (false !== ($file = readdir($dir))) {
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if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
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if (is_dir($source . '/' . $file)) {
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$child = $target->newFolder($file);
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self::copyr($source . '/' . $file, $child);
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} else {
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$child = $target->newFile($file);
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stream_copy_to_stream(fopen($source . '/' . $file,'r'), $child->fopen('w'));
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}
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}
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}
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closedir($dir);
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}
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/**
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* @return void
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*/
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public static function tearDownFS() {
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\OC\Files\Filesystem::tearDown();
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self::$fsSetup = false;
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self::$rootMounted = false;
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}
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/**
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* get the current installed version of ownCloud
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*
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* @return array
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*/
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public static function getVersion() {
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OC_Util::loadVersion();
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return \OC::$server->getSession()->get('OC_Version');
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}
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/**
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* get the current installed version string of ownCloud
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*
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* @return string
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*/
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public static function getVersionString() {
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OC_Util::loadVersion();
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return \OC::$server->getSession()->get('OC_VersionString');
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}
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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
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* that returns "Enterprise".
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* @return string
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*/
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public static function getEditionString() {
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OC_Util::loadVersion();
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return \OC::$server->getSession()->get('OC_Edition');
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}
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/**
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* @description get the update channel of the current installed of ownCloud.
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* @return string
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*/
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public static function getChannel() {
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OC_Util::loadVersion();
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return \OC::$server->getSession()->get('OC_Channel');
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}
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/**
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* @description get the build number of the current installed of ownCloud.
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* @return string
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*/
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public static function getBuild() {
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OC_Util::loadVersion();
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return \OC::$server->getSession()->get('OC_Build');
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}
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/**
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* @description load the version.php into the session as cache
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*/
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private static function loadVersion() {
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$timestamp = filemtime(OC::$SERVERROOT . '/version.php');
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if (!\OC::$server->getSession()->exists('OC_Version') or OC::$server->getSession()->get('OC_Version_Timestamp') != $timestamp) {
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require 'version.php';
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$session = \OC::$server->getSession();
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/** @var $timestamp int */
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$session->set('OC_Version_Timestamp', $timestamp);
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/** @var $OC_Version string */
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$session->set('OC_Version', $OC_Version);
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/** @var $OC_VersionString string */
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$session->set('OC_VersionString', $OC_VersionString);
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/** @var $OC_Edition string */
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$session->set('OC_Edition', $OC_Edition);
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/** @var $OC_Channel string */
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$session->set('OC_Channel', $OC_Channel);
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/** @var $OC_Build string */
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$session->set('OC_Build', $OC_Build);
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}
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}
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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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*
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* @param $application application to get the files from
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* @param $directory directory withing this application (css, js, vendor, etc)
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* @param $file the file inside of the above folder
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* @return string the path
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*/
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private static function generatePath($application, $directory, $file) {
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if (is_null($file)) {
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$file = $application;
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$application = "";
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}
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if (!empty($application)) {
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return "$application/$directory/$file";
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} else {
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return "$directory/$file";
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}
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}
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/**
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* add a javascript file
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*
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* @param string $application application id
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* @param string|null $file filename
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* @return void
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*/
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public static function addScript($application, $file = null) {
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self::$scripts[] = OC_Util::generatePath($application, 'js', $file);
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}
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/**
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* add a javascript file from the vendor sub folder
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*
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* @param string $application application id
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* @param string|null $file filename
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* @return void
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*/
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public static function addVendorScript($application, $file = null) {
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self::$scripts[] = OC_Util::generatePath($application, 'vendor', $file);
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}
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/**
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* add a translation JS file
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*
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* @param string $application application id
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* @param string $languageCode language code, defaults to the current language
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*/
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public static function addTranslations($application, $languageCode = null) {
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if (is_null($languageCode)) {
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$l = new \OC_L10N($application);
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$languageCode = $l->getLanguageCode($application);
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}
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if (!empty($application)) {
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self::$scripts[] = "$application/l10n/$languageCode";
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} else {
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self::$scripts[] = "l10n/$languageCode";
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}
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}
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/**
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* add a css file
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*
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* @param string $application application id
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* @param string|null $file filename
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* @return void
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*/
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public static function addStyle($application, $file = null) {
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self::$styles[] = OC_Util::generatePath($application, 'css', $file);
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}
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/**
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* add a css file from the vendor sub folder
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*
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* @param string $application application id
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* @param string|null $file filename
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* @return void
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*/
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public static function addVendorStyle($application, $file = null) {
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self::$styles[] = OC_Util::generatePath($application, 'vendor', $file);
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}
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/**
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* Add a custom element to the header
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* If $text is null then the element will be written as empty element.
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* So use "" to get a closing tag.
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* @param string $tag tag name of the element
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* @param array $attributes array of attributes for the element
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* @param string $text the text content for the element
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*/
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public static function addHeader($tag, $attributes, $text=null) {
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self::$headers[] = array(
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'tag' => $tag,
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'attributes' => $attributes,
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'text' => $text
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);
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}
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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
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* @param bool $dateOnly option to omit time from the result
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* @param DateTimeZone|string $timeZone where the given timestamp shall be converted to
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* @return string timestamp
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* @description adjust to clients timezone if we know it
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*/
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public static function formatDate($timestamp, $dateOnly = false, $timeZone = null) {
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if (is_null($timeZone)) {
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if (\OC::$server->getSession()->exists('timezone')) {
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$systemTimeZone = intval(date('O'));
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$systemTimeZone = (round($systemTimeZone / 100, 0) * 60) + ($systemTimeZone % 100);
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$clientTimeZone = \OC::$server->getSession()->get('timezone') * 60;
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$offset = $clientTimeZone - $systemTimeZone;
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$timestamp = $timestamp + $offset * 60;
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}
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} else {
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if (!$timeZone instanceof DateTimeZone) {
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$timeZone = new DateTimeZone($timeZone);
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}
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$dt = new DateTime("@$timestamp");
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$offset = $timeZone->getOffset($dt);
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$timestamp += $offset;
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}
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$l = \OC::$server->getL10N('lib');
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return $l->l($dateOnly ? 'date' : 'datetime', $timestamp);
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}
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/**
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* check if the current server configuration is suitable for ownCloud
|
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*
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* @param \OCP\IConfig $config
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* @return array arrays with error messages and hints
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*/
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public static function checkServer(\OCP\IConfig $config) {
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$l = \OC::$server->getL10N('lib');
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$errors = array();
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$CONFIG_DATADIRECTORY = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data');
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if (!self::needUpgrade($config) && $config->getSystemValue('installed', false)) {
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// this check needs to be done every time
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$errors = self::checkDataDirectoryValidity($CONFIG_DATADIRECTORY);
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}
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// Assume that if checkServer() succeeded before in this session, then all is fine.
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if (\OC::$server->getSession()->exists('checkServer_succeeded') && \OC::$server->getSession()->get('checkServer_succeeded')) {
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return $errors;
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}
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$webServerRestart = false;
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$setup = new OC_Setup($config);
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$availableDatabases = $setup->getSupportedDatabases();
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if (empty($availableDatabases)) {
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$errors[] = array(
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'error' => $l->t('No database drivers (sqlite, mysql, or postgresql) installed.'),
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'hint' => '' //TODO: sane hint
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);
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$webServerRestart = true;
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}
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//common hint for all file permissions error messages
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$permissionsHint = $l->t('Permissions can usually be fixed by '
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. '%sgiving the webserver write access to the root directory%s.',
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array('<a href="' . \OC_Helper::linkToDocs('admin-dir_permissions') . '" target="_blank">', '</a>'));
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// Check if config folder is writable.
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if (!is_writable(OC::$configDir) or !is_readable(OC::$configDir)) {
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$errors[] = array(
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'error' => $l->t('Cannot write into "config" directory'),
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'hint' => $l->t('This can usually be fixed by '
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. '%sgiving the webserver write access to the config directory%s.',
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array('<a href="' . \OC_Helper::linkToDocs('admin-dir_permissions') . '" target="_blank">', '</a>'))
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);
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}
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// Check if there is a writable install folder.
|
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if ($config->getSystemValue('appstoreenabled', true)) {
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if (OC_App::getInstallPath() === null
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|| !is_writable(OC_App::getInstallPath())
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|| !is_readable(OC_App::getInstallPath())
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) {
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$errors[] = array(
|
|
'error' => $l->t('Cannot write into "apps" directory'),
|
|
'hint' => $l->t('This can usually be fixed by '
|
|
. '%sgiving the webserver write access to the apps directory%s'
|
|
. ' or disabling the appstore in the config file.',
|
|
array('<a href="' . \OC_Helper::linkToDocs('admin-dir_permissions') . '" target="_blank">', '</a>'))
|
|
);
|
|
}
|
|
}
|
|
// Create root dir.
|
|
if ($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' => $l->t('This can usually be fixed by '
|
|
. '<a href="%s" target="_blank">giving the webserver write access to the root directory</a>.',
|
|
array(OC_Helper::linkToDocs('admin-dir_permissions')))
|
|
);
|
|
}
|
|
} else if (!is_writable($CONFIG_DATADIRECTORY) or !is_readable($CONFIG_DATADIRECTORY)) {
|
|
$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
|
|
// If the dependency is not found the missing module name is shown to the EndUser
|
|
$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'
|
|
),
|
|
'defined' => array(
|
|
'PDO::ATTR_DRIVER_NAME' => 'PDO'
|
|
)
|
|
);
|
|
$missingDependencies = array();
|
|
$moduleHint = $l->t('Please ask your server administrator to install the module.');
|
|
|
|
foreach ($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[] = $module;
|
|
}
|
|
}
|
|
|
|
foreach($missingDependencies as $missingDependency) {
|
|
$errors[] = array(
|
|
'error' => $l->t('PHP module %s not installed.', array($missingDependency)),
|
|
'hint' => $moduleHint
|
|
);
|
|
$webServerRestart = true;
|
|
}
|
|
|
|
if (version_compare(phpversion(), '5.3.3', '<')) {
|
|
$errors[] = array(
|
|
'error' => $l->t('PHP %s or higher is required.', '5.3.3'),
|
|
'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;
|
|
}
|
|
if (((strtolower(@ini_get('safe_mode')) == 'on')
|
|
|| (strtolower(@ini_get('safe_mode')) == 'yes')
|
|
|| (strtolower(@ini_get('safe_mode')) == 'true')
|
|
|| (ini_get("safe_mode") == 1))
|
|
) {
|
|
$errors[] = array(
|
|
'error' => $l->t('PHP Safe Mode is enabled. ownCloud requires that it is disabled to work properly.'),
|
|
'hint' => $l->t('PHP Safe Mode is a deprecated and mostly useless setting that should be disabled. '
|
|
. 'Please ask your server administrator to disable it in php.ini or in your webserver config.')
|
|
);
|
|
$webServerRestart = true;
|
|
}
|
|
if (get_magic_quotes_gpc() == 1) {
|
|
$errors[] = array(
|
|
'error' => $l->t('Magic Quotes is enabled. ownCloud requires that it is disabled to work properly.'),
|
|
'hint' => $l->t('Magic Quotes is a deprecated and mostly useless setting that should be disabled. '
|
|
. 'Please ask your server administrator to disable it in php.ini or in your webserver config.')
|
|
);
|
|
$webServerRestart = true;
|
|
}
|
|
if (!self::isAnnotationsWorking()) {
|
|
$errors[] = array(
|
|
'error' => 'PHP is apparently setup to strip inline doc blocks. This will make several core apps inaccessible.',
|
|
'hint' => 'This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.'
|
|
);
|
|
}
|
|
|
|
if ($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());
|
|
$keyfilePath = '/files_encryption/keyfiles';
|
|
if ($view->is_dir($keyfilePath)) {
|
|
$dircontent = $view->getDirectoryContent($keyfilePath);
|
|
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());
|
|
$backupPath = '/files_encryption/keyfiles.backup';
|
|
if ($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 $errors
|
|
*/
|
|
public static function displayLoginPage($errors = array()) {
|
|
$parameters = array();
|
|
foreach ($errors as $value) {
|
|
$parameters[$value] = true;
|
|
}
|
|
if (!empty($_REQUEST['user'])) {
|
|
$parameters["username"] = $_REQUEST['user'];
|
|
$parameters['user_autofocus'] = false;
|
|
} else {
|
|
$parameters["username"] = '';
|
|
$parameters['user_autofocus'] = true;
|
|
}
|
|
if (isset($_REQUEST['redirect_url'])) {
|
|
$redirectUrl = $_REQUEST['redirect_url'];
|
|
$parameters['redirect_url'] = urlencode($redirectUrl);
|
|
}
|
|
|
|
$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',
|
|
array('redirect_url' => OC_Request::requestUri())
|
|
));
|
|
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 (OC_App::isEnabled($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;
|
|
}
|
|
|
|
// 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('§')) {
|
|
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 a PHP version older then 5.3.8 is installed.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function isPHPoutdated() {
|
|
return version_compare(phpversion(), '5.3.8', '<');
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* Checks if a secure random number generator is available
|
|
*
|
|
* @return true
|
|
* @deprecated Function will be removed in the future and does only return true.
|
|
*/
|
|
public static function secureRNGAvailable() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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');
|
|
}
|
|
|
|
/**
|
|
* 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 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) {
|
|
$normalizedValue = normalizer_normalize($value);
|
|
if ($normalizedValue === null || $normalizedValue === false) {
|
|
\OC_Log::write('core', 'normalizing failed for "' . $value . '"', \OC_Log::WARN);
|
|
} else {
|
|
$value = $normalizedValue;
|
|
}
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* @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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public static function isPhpCharSetUtf8() {
|
|
return ini_get('default_charset') === 'UTF-8';
|
|
}
|
|
}
|