nextcloud/lib/base.php

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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* Class that is a namespace for all global OC variables
* No, we can not put this class in its own file because it is used by
* OC_autoload!
*/
class OC{
/**
* Assoziative array for autoloading. classname => filename
*/
public static $CLASSPATH = array();
/**
* The installation path for owncloud on the server (e.g. /srv/http/owncloud)
*/
public static $SERVERROOT = '';
/**
* the current request path relative to the owncloud root (e.g. files/index.php)
*/
private static $SUBURI = '';
/**
* the owncloud root path for http requests (e.g. owncloud/)
*/
public static $WEBROOT = '';
/**
* The installation path of the 3rdparty folder on the server (e.g. /srv/http/owncloud/3rdparty)
*/
public static $THIRDPARTYROOT = '';
/**
* the root path of the 3rdparty folder for http requests (e.g. owncloud/3rdparty)
*/
public static $THIRDPARTYWEBROOT = '';
/**
* The installation path array of the apps folder on the server (e.g. /srv/http/owncloud) 'path' and web path in 'url'
*/
public static $APPSROOTS = array();
/*
* requested app
*/
public static $REQUESTEDAPP = '';
/*
* requested file of app
*/
public static $REQUESTEDFILE = '';
/**
* check if owncloud runs in cli mode
*/
public static $CLI = false;
/**
* SPL autoload
*/
public static function autoload($className){
if(array_key_exists($className,OC::$CLASSPATH)){
/** @TODO: Remove this when necessary
Remove "apps/" from inclusion path for smooth migration to mutli app dir
*/
$path = preg_replace('/apps\//','', OC::$CLASSPATH[$className]);
require_once $path;
}
elseif(strpos($className,'OC_')===0){
require_once strtolower(str_replace('_','/',substr($className,3)) . '.php');
}
elseif(strpos($className,'OCP\\')===0){
require_once 'public/'.strtolower(str_replace('\\','/',substr($className,3)) . '.php');
}
elseif(strpos($className,'OCA\\')===0){
require_once 'apps/'.strtolower(str_replace('\\','/',substr($className,3)) . '.php');
}
elseif(strpos($className,'Sabre_')===0) {
require_once str_replace('_','/',$className) . '.php';
}
elseif(strpos($className,'Test_')===0){
require_once 'tests/lib/'.strtolower(str_replace('_','/',substr($className,5)) . '.php');
}
}
public static function initPaths(){
// calculate the root directories
OC::$SERVERROOT=str_replace("\\",'/',substr(__FILE__,0,-13));
OC::$SUBURI= str_replace("\\","/",substr(realpath($_SERVER["SCRIPT_FILENAME"]),strlen(OC::$SERVERROOT)));
$scriptName=$_SERVER["SCRIPT_NAME"];
if(substr($scriptName,-1)=='/'){
$scriptName.='index.php';
//make sure suburi follows the same rules as scriptName
if(substr(OC::$SUBURI,-9)!='index.php'){
if(substr(OC::$SUBURI,-1)!='/'){
OC::$SUBURI=OC::$SUBURI.'/';
}
OC::$SUBURI=OC::$SUBURI.'index.php';
}
}
OC::$WEBROOT=substr($scriptName,0,strlen($scriptName)-strlen(OC::$SUBURI));
if(OC::$WEBROOT!='' and OC::$WEBROOT[0]!=='/'){
OC::$WEBROOT='/'.OC::$WEBROOT;
}
// ensure we can find OC_Config
set_include_path(
OC::$SERVERROOT.'/lib'.PATH_SEPARATOR.
get_include_path()
);
// search the 3rdparty folder
if(OC_Config::getValue('3rdpartyroot', '')<>'' and OC_Config::getValue('3rdpartyurl', '')<>''){
OC::$THIRDPARTYROOT=OC_Config::getValue('3rdpartyroot', '');
OC::$THIRDPARTYWEBROOT=OC_Config::getValue('3rdpartyurl', '');
}elseif(file_exists(OC::$SERVERROOT.'/3rdparty')){
OC::$THIRDPARTYROOT=OC::$SERVERROOT;
OC::$THIRDPARTYWEBROOT=OC::$WEBROOT;
}elseif(file_exists(OC::$SERVERROOT.'/../3rdparty')){
OC::$THIRDPARTYWEBROOT=rtrim(dirname(OC::$WEBROOT), '/');
OC::$THIRDPARTYROOT=rtrim(dirname(OC::$SERVERROOT), '/');
}else{
echo("3rdparty directory not found! Please put the ownCloud 3rdparty folder in the ownCloud folder or the folder above. You can also configure the location in the config.php file.");
exit;
}
// search the apps folder
$config_paths = OC_Config::getValue('apps_paths', array());
if(! empty($config_paths)){
foreach($config_paths as $paths) {
if( isset($paths['url']) && isset($paths['path'])) {
$paths['url'] = rtrim($paths['url'],'/');
$paths['path'] = rtrim($paths['path'],'/');
OC::$APPSROOTS[] = $paths;
}
}
}elseif(file_exists(OC::$SERVERROOT.'/apps')){
OC::$APPSROOTS[] = array('path'=> OC::$SERVERROOT.'/apps', 'url' => '/apps', 'writable' => true);
}elseif(file_exists(OC::$SERVERROOT.'/../apps')){
OC::$APPSROOTS[] = array('path'=> rtrim(dirname(OC::$SERVERROOT), '/').'/apps', 'url' => '/apps', 'writable' => true);
}
if(empty(OC::$APPSROOTS)){
echo("apps directory not found! Please put the ownCloud apps folder in the ownCloud folder or the folder above. You can also configure the location in the config.php file.");
exit;
}
$paths = array();
foreach( OC::$APPSROOTS as $path)
$paths[] = $path['path'];
// set the right include path
set_include_path(
OC::$SERVERROOT.'/lib'.PATH_SEPARATOR.
OC::$SERVERROOT.'/config'.PATH_SEPARATOR.
OC::$THIRDPARTYROOT.'/3rdparty'.PATH_SEPARATOR.
implode($paths,PATH_SEPARATOR).PATH_SEPARATOR.
get_include_path().PATH_SEPARATOR.
OC::$SERVERROOT
);
}
public static function checkInstalled() {
// Redirect to installer if not installed
if (!OC_Config::getValue('installed', false)) {
if (OC::$SUBURI != '/index.php') {
if(!OC::$CLI){
$url = 'http://'.$_SERVER['SERVER_NAME'].OC::$WEBROOT.'/index.php';
header("Location: $url");
}
exit();
}
// Check for autosetup:
$autosetup_file = OC::$SERVERROOT."/config/autoconfig.php";
if( file_exists( $autosetup_file )){
OC_Log::write('core','Autoconfig file found, setting up owncloud...', OC_Log::INFO);
include( $autosetup_file );
$_POST['install'] = 'true';
$_POST = array_merge ($_POST, $AUTOCONFIG);
unlink($autosetup_file);
}
OC_Util::addScript('setup');
require_once('setup.php');
exit();
}
}
public static function checkSSL() {
// redirect to https site if configured
if( OC_Config::getValue( "forcessl", false )){
ini_set("session.cookie_secure", "on");
if(OC_Request::serverProtocol()<>'https' and !OC::$CLI) {
$url = "https://". OC_Request::serverHost() . $_SERVER['REQUEST_URI'];
header("Location: $url");
exit();
}
}
}
public static function checkUpgrade() {
if(OC_Config::getValue('installed', false)){
$installedVersion=OC_Config::getValue('version','0.0.0');
$currentVersion=implode('.',OC_Util::getVersion());
if (version_compare($currentVersion, $installedVersion, '>')) {
OC_Log::write('core','starting upgrade from '.$installedVersion.' to '.$currentVersion,OC_Log::DEBUG);
$result=OC_DB::updateDbFromStructure(OC::$SERVERROOT.'/db_structure.xml');
if(!$result){
echo 'Error while upgrading the database';
die();
}
if(file_exists(OC::$SERVERROOT."/config/config.php") and !is_writable(OC::$SERVERROOT."/config/config.php")) {
$tmpl = new OC_Template( '', 'error', 'guest' );
$tmpl->assign('errors',array(1=>array('error'=>"Can't write into config directory 'config'",'hint'=>"You can usually fix this by giving the webserver user write access to the config directory in owncloud")));
$tmpl->printPage();
exit;
}
OC_Config::setValue('version',implode('.',OC_Util::getVersion()));
OC_App::checkAppsRequirements();
// load all apps to also upgrade enabled apps
OC_App::loadApps();
}
}
}
public static function initTemplateEngine() {
// Add the stuff we need always
OC_Util::addScript( "jquery-1.7.2.min" );
OC_Util::addScript( "jquery-ui-1.8.16.custom.min" );
OC_Util::addScript( "jquery-showpassword" );
OC_Util::addScript( "jquery.infieldlabel.min" );
OC_Util::addScript( "jquery-tipsy" );
OC_Util::addScript( "oc-dialogs" );
OC_Util::addScript( "js" );
OC_Util::addScript( "eventsource" );
OC_Util::addScript( "config" );
//OC_Util::addScript( "multiselect" );
OC_Util::addScript('search','result');
if( OC_Config::getValue( 'installed', false )){
if( OC_Appconfig::getValue( 'core', 'backgroundjobs_mode', 'ajax' ) == 'ajax' ){
OC_Util::addScript( 'backgroundjobs' );
}
}
OC_Util::addStyle( "styles" );
OC_Util::addStyle( "multiselect" );
OC_Util::addStyle( "jquery-ui-1.8.16.custom" );
OC_Util::addStyle( "jquery-tipsy" );
}
public static function initSession() {
ini_set('session.cookie_httponly','1;');
session_start();
}
public static function init(){
// register autoloader
spl_autoload_register(array('OC','autoload'));
setlocale(LC_ALL, 'en_US.UTF-8');
// set some stuff
//ob_start();
error_reporting(E_ALL | E_STRICT);
if (defined('DEBUG') && DEBUG){
ini_set('display_errors', 1);
}
self::$CLI=(php_sapi_name() == 'cli');
date_default_timezone_set('UTC');
ini_set('arg_separator.output','&amp;');
// try to switch magic quotes off.
if(function_exists('set_magic_quotes_runtime')) {
@set_magic_quotes_runtime(false);
}
//try to configure php to enable big file uploads.
//this doesn´t work always depending on the webserver and php configuration.
//Let´s try to overwrite some defaults anyways
//try to set the maximum execution time to 60min
@set_time_limit(3600);
@ini_set('max_execution_time',3600);
@ini_set('max_input_time',3600);
//try to set the maximum filesize to 10G
@ini_set('upload_max_filesize','10G');
@ini_set('post_max_size','10G');
@ini_set('file_uploads','50');
//try to set the session lifetime to 60min
@ini_set('gc_maxlifetime','3600');
//set http auth headers for apache+php-cgi work around
if (isset($_SERVER['HTTP_AUTHORIZATION']) && preg_match('/Basic\s+(.*)$/i', $_SERVER['HTTP_AUTHORIZATION'], $matches))
{
list($name, $password) = explode(':', base64_decode($matches[1]));
$_SERVER['PHP_AUTH_USER'] = strip_tags($name);
$_SERVER['PHP_AUTH_PW'] = strip_tags($password);
}
//set http auth headers for apache+php-cgi work around if variable gets renamed by apache
if (isset($_SERVER['REDIRECT_HTTP_AUTHORIZATION']) && preg_match('/Basic\s+(.*)$/i', $_SERVER['REDIRECT_HTTP_AUTHORIZATION'], $matches))
{
list($name, $password) = explode(':', base64_decode($matches[1]));
$_SERVER['PHP_AUTH_USER'] = strip_tags($name);
$_SERVER['PHP_AUTH_PW'] = strip_tags($password);
}
self::initPaths();
// register the stream wrappers
require_once('streamwrappers.php');
stream_wrapper_register("fakedir", "OC_FakeDirStream");
stream_wrapper_register('static', 'OC_StaticStreamWrapper');
stream_wrapper_register('close', 'OC_CloseStreamWrapper');
self::initTemplateEngine();
self::checkInstalled();
self::checkSSL();
self::initSession();
self::checkUpgrade();
$errors=OC_Util::checkServer();
if(count($errors)>0) {
OC_Template::printGuestPage('', 'error', array('errors' => $errors));
exit;
}
// User and Groups
if( !OC_Config::getValue( "installed", false )){
$_SESSION['user_id'] = '';
}
OC_User::useBackend(new OC_User_Database());
OC_Group::useBackend(new OC_Group_Database());
// Load Apps
// This includes plugins for users and filesystems as well
global $RUNTIME_NOAPPS;
global $RUNTIME_APPTYPES;
if(!$RUNTIME_NOAPPS ){
if($RUNTIME_APPTYPES){
OC_App::loadApps($RUNTIME_APPTYPES);
}else{
OC_App::loadApps();
}
}
// Check for blacklisted files
OC_Hook::connect('OC_Filesystem','write','OC_Filesystem','isBlacklisted');
//make sure temporary files are cleaned up
register_shutdown_function(array('OC_Helper','cleanTmp'));
//parse the given parameters
self::$REQUESTEDAPP = (isset($_GET['app']) && trim($_GET['app']) != '' && !is_null($_GET['app'])?str_replace(array('\0', '/', '\\', '..'), '', strip_tags($_GET['app'])):OC_Config::getValue('defaultapp', 'files'));
if(substr_count(self::$REQUESTEDAPP, '?') != 0){
$app = substr(self::$REQUESTEDAPP, 0, strpos(self::$REQUESTEDAPP, '?'));
$param = substr($_GET['app'], strpos($_GET['app'], '?') + 1);
parse_str($param, $get);
$_GET = array_merge($_GET, $get);
self::$REQUESTEDAPP = $app;
$_GET['app'] = $app;
}
self::$REQUESTEDFILE = (isset($_GET['getfile'])?$_GET['getfile']:null);
if(substr_count(self::$REQUESTEDFILE, '?') != 0){
$file = substr(self::$REQUESTEDFILE, 0, strpos(self::$REQUESTEDFILE, '?'));
$param = substr(self::$REQUESTEDFILE, strpos(self::$REQUESTEDFILE, '?') + 1);
parse_str($param, $get);
$_GET = array_merge($_GET, $get);
self::$REQUESTEDFILE = $file;
$_GET['getfile'] = $file;
}
if(!is_null(self::$REQUESTEDFILE)){
$subdir = OC_App::getAppPath(OC::$REQUESTEDAPP) . '/' . self::$REQUESTEDFILE;
$parent = OC_App::getAppPath(OC::$REQUESTEDAPP);
if(!OC_Helper::issubdirectory($subdir, $parent)){
self::$REQUESTEDFILE = null;
header('HTTP/1.0 404 Not Found');
exit;
}
}
}
/**
* @brief Handle the request
*/
public static function handleRequest() {
// Handle WebDAV
if($_SERVER['REQUEST_METHOD']=='PROPFIND'){
header('location: '.OC_Helper::linkToRemote('webdav'));
return;
}
// Handle app css files
if(substr(OC::$REQUESTEDFILE,-3) == 'css') {
self::loadCSSFile();
return;
}
// Someone is logged in :
if(OC_User::isLoggedIn()) {
OC_App::loadApps();
if(isset($_GET["logout"]) and ($_GET["logout"])) {
OC_User::logout();
header("Location: ".OC::$WEBROOT.'/');
}else{
$app = OC::$REQUESTEDAPP;
$file = OC::$REQUESTEDFILE;
if(is_null($file)) {
$file = 'index.php';
}
$file_ext = substr($file, -3);
if ($file_ext != 'php'
|| !self::loadAppScriptFile($app, $file)) {
header('HTTP/1.0 404 Not Found');
}
}
return;
}
// Not handled and not logged in
self::handleLogin();
}
protected static function loadAppScriptFile($app, $file) {
$app_path = OC_App::getAppPath($app);
$file = $app_path . '/' . $file;
unset($app, $app_path);
if (file_exists($file)) {
require_once($file);
return true;
}
return false;
}
protected static function loadCSSFile() {
$app = OC::$REQUESTEDAPP;
$file = OC::$REQUESTEDFILE;
$app_path = OC_App::getAppPath($app);
if (file_exists($app_path . '/' . $file)) {
$app_web_path = OC_App::getAppWebPath($app);
$filepath = $app_web_path . '/' . $file;
$minimizer = new OC_Minimizer_CSS();
$info = array($app_path, $app_web_path, $file);
$minimizer->output(array($info), $filepath);
}
}
protected static function handleLogin() {
OC_App::loadApps(array('prelogin'));
$error = false;
// remember was checked after last login
if (OC::tryRememberLogin()) {
// nothing more to do
// Someone wants to log in :
} elseif (OC::tryFormLogin()) {
$error = true;
// The user is already authenticated using Apaches AuthType Basic... very usable in combination with LDAP
} elseif (OC::tryBasicAuthLogin()) {
$error = true;
}
OC_Util::displayLoginPage($error);
}
protected static function tryRememberLogin() {
if(!isset($_COOKIE["oc_remember_login"])
|| !isset($_COOKIE["oc_token"])
|| !isset($_COOKIE["oc_username"])
|| !$_COOKIE["oc_remember_login"]) {
return false;
}
OC_App::loadApps(array('authentication'));
if(defined("DEBUG") && DEBUG) {
OC_Log::write('core','Trying to login from cookie',OC_Log::DEBUG);
}
// confirm credentials in cookie
if(isset($_COOKIE['oc_token']) && OC_User::userExists($_COOKIE['oc_username']) &&
OC_Preferences::getValue($_COOKIE['oc_username'], "login", "token") === $_COOKIE['oc_token']) {
OC_User::setUserId($_COOKIE['oc_username']);
OC_Util::redirectToDefaultPage();
}
else {
OC_User::unsetMagicInCookie();
}
return true;
}
protected static function tryFormLogin() {
if(!isset($_POST["user"])
|| !isset($_POST['password'])
|| !isset($_SESSION['sectoken'])
|| !isset($_POST['sectoken'])
|| ($_SESSION['sectoken']!=$_POST['sectoken']) ) {
return false;
}
OC_App::loadApps();
if(OC_User::login($_POST["user"], $_POST["password"])) {
if(!empty($_POST["remember_login"])){
if(defined("DEBUG") && DEBUG) {
OC_Log::write('core','Setting remember login to cookie', OC_Log::DEBUG);
}
$token = md5($_POST["user"].time().$_POST['password']);
OC_Preferences::setValue($_POST['user'], 'login', 'token', $token);
OC_User::setMagicInCookie($_POST["user"], $token);
}
else {
OC_User::unsetMagicInCookie();
}
OC_Util::redirectToDefaultPage();
}
return true;
}
protected static function tryBasicAuthLogin() {
if (!isset($_SERVER["PHP_AUTH_USER"])
|| !isset($_SERVER["PHP_AUTH_PW"])){
return false;
}
OC_App::loadApps(array('authentication'));
if (OC_User::login($_SERVER["PHP_AUTH_USER"],$_SERVER["PHP_AUTH_PW"])) {
//OC_Log::write('core',"Logged in with HTTP Authentication",OC_Log::DEBUG);
OC_User::unsetMagicInCookie();
$_REQUEST['redirect_url'] = (isset($_SERVER['REQUEST_URI'])?$_SERVER['REQUEST_URI']:'');
OC_Util::redirectToDefaultPage();
}
return true;
}
}
// define runtime variables - unless this already has been done
if( !isset( $RUNTIME_NOAPPS )){
$RUNTIME_NOAPPS = false;
}
if(!function_exists('get_temp_dir')) {
function get_temp_dir() {
if( $temp=ini_get('upload_tmp_dir') ) return $temp;
if( $temp=getenv('TMP') ) return $temp;
if( $temp=getenv('TEMP') ) return $temp;
if( $temp=getenv('TMPDIR') ) return $temp;
$temp=tempnam(__FILE__,'');
if (file_exists($temp)) {
unlink($temp);
return dirname($temp);
}
if( $temp=sys_get_temp_dir()) return $temp;
return null;
}
}
OC::init();