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 folder that stores that data files for the filesystem of the user (e.g. /srv/http/owncloud/data/myusername/files)
*/
public static $CONFIG_DATADIRECTORY = '';
/**
* 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 of the apps folder on the server (e.g. /srv/http/owncloud)
*/
public static $APPSROOT = '';
/**
* the root path of the apps folder for http requests (e.g. owncloud)
*/
public static $APPSWEBROOT = '';
/*
* 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)){
require_once OC::$CLASSPATH[$className];
}
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($className,'Sabre_')===0) {
require_once str_replace('_','/',$className) . '.php';
}
elseif(strpos($className,'Test_')===0){
require_once 'tests/lib/'.strtolower(str_replace('_','/',substr($className,5)) . '.php');
}
}
/**
* autodetects the formfactor of the used device
* default -> the normal desktop browser interface
* mobile -> interface for smartphones
* tablet -> interface for tablets
* standalone -> the default interface but without header, footer and sidebar. just the application. useful to ue just a specific app on the desktop in a standalone window.
*/
public static function detectFormfactor(){
// please add more useragent strings for other devices
if(isset($_SERVER['HTTP_USER_AGENT'])){
if(stripos($_SERVER['HTTP_USER_AGENT'],'ipad')>0) {
$mode='tablet';
}elseif(stripos($_SERVER['HTTP_USER_AGENT'],'iphone')>0){
$mode='mobile';
}elseif((stripos($_SERVER['HTTP_USER_AGENT'],'N9')>0) and (stripos($_SERVER['HTTP_USER_AGENT'],'nokia')>0)){
$mode='mobile';
}else{
$mode='default';
}
}else{
$mode='default';
}
return($mode);
}
public static function initPaths(){
// calculate the documentroot
$DOCUMENTROOT=realpath($_SERVER['DOCUMENT_ROOT']);
OC::$SERVERROOT=str_replace("\\",'/',substr(__FILE__,0,-13));
OC::$SUBURI=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::$SUBURI));
// try a new way to detect the WEBROOT which is simpler and also works with the app directory outside the owncloud folder. let´s see if this works for everybody
// OC::$WEBROOT=substr(OC::$SERVERROOT,strlen($DOCUMENTROOT));
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::$SERVERROOT), '/');
}else{
echo("3rdparty directory not found! Please put the ownCloud 3rdparty folder in the ownCloud folder or the folder above. You can also configure the location in the config.php file.");
exit;
}
// search the apps folder
if(OC_Config::getValue('appsroot', '')<>''){
OC::$APPSROOT=OC_Config::getValue('appsroot', '');
OC::$APPSWEBROOT=OC_Config::getValue('appsurl', '');
}elseif(file_exists(OC::$SERVERROOT.'/apps')){
OC::$APPSROOT=OC::$SERVERROOT;
OC::$APPSWEBROOT=OC::$WEBROOT;
}elseif(file_exists(OC::$SERVERROOT.'/../apps')){
OC::$APPSROOT=rtrim(dirname(OC::$SERVERROOT), '/');
OC::$APPSWEBROOT=rtrim(dirname(OC::$WEBROOT), '/');
}else{
echo("apps directory not found! Please put the ownCloud apps folder in the ownCloud folder or the folder above. You can also configure the location in the config.php file.");
exit;
}
// set the right include path
set_include_path(
OC::$SERVERROOT.'/lib'.PATH_SEPARATOR.
OC::$SERVERROOT.'/config'.PATH_SEPARATOR.
OC::$THIRDPARTYROOT.'/3rdparty'.PATH_SEPARATOR.
OC::$APPSROOT.PATH_SEPARATOR.
OC::$APPSROOT.'/apps'.PATH_SEPARATOR.
get_include_path().PATH_SEPARATOR.
OC::$SERVERROOT
);
}
public static function checkInstalled() {
// Redirect to installer if not installed
if (!OC_Config::getValue('installed', false) && OC::$SUBURI != '/index.php') {
$url = 'http://'.$_SERVER['SERVER_NAME'].OC::$WEBROOT.'/index.php';
header("Location: $url");
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_Helper::serverProtocol()<>'https') {
$url = "https://". OC_Helper::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")));
$tmpl->printPage();
exit;
}
OC_Config::setValue('version',implode('.',OC_Util::getVersion()));
}
OC_App::updateApps();
}
}
public static function initTemplateEngine() {
// if the formfactor is not yet autodetected do the autodetection now. For possible forfactors check the detectFormfactor documentation
if(!isset($_SESSION['formfactor'])){
$_SESSION['formfactor']=OC::detectFormfactor();
}
// allow manual override via GET parameter
if(isset($_GET['formfactor'])){
$_SESSION['formfactor']=$_GET['formfactor'];
}
// 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');
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 loadapp(){
if(file_exists(OC::$APPSROOT . '/apps/' . OC::$REQUESTEDAPP . '/index.php')){
require_once(OC::$APPSROOT . '/apps/' . OC::$REQUESTEDAPP . '/index.php');
}else{
trigger_error('The requested App was not found.', E_USER_ERROR);//load default app instead?
}
}
public static function loadfile(){
if(file_exists(OC::$APPSROOT . '/apps/' . OC::$REQUESTEDAPP . '/' . OC::$REQUESTEDFILE)){
if(substr(OC::$REQUESTEDFILE, -3) == 'css'){
$file = 'apps/' . OC::$REQUESTEDAPP . '/' . OC::$REQUESTEDFILE;
$minimizer = new OC_Minimizer_CSS();
$minimizer->output(array(array(OC::$APPSROOT, OC::$APPSWEBROOT, $file)));
exit;
}elseif(substr(OC::$REQUESTEDFILE, -3) == 'php'){
require_once(OC::$APPSROOT . '/apps/' . OC::$REQUESTEDAPP . '/' . OC::$REQUESTEDFILE);
}
}else{
header('HTTP/1.0 404 Not Found');
exit;
}
}
public static function init(){
// register autoloader
spl_autoload_register(array('OC','autoload'));
setlocale(LC_ALL, 'en_US.UTF-8');
// set some stuff
//ob_start();
error_reporting(E_ALL | E_STRICT);
if (defined('DEBUG') && DEBUG){
ini_set('display_errors', 1);
}
self::$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::checkInstalled();
self::checkSSL();
// CSRF protection
if(isset($_SERVER['HTTP_REFERER'])) $referer=$_SERVER['HTTP_REFERER']; else $referer='';
$refererhost=parse_url($referer);
if(isset($refererhost['host'])) $refererhost=$refererhost['host']; else $refererhost='';
$server=OC_Helper::serverHost();
$serverhost=explode(':',$server);
$serverhost=$serverhost['0'];
if(!self::$CLI){
if(($_SERVER['REQUEST_METHOD']=='POST') and ($refererhost<>$serverhost)) {
$url = OC_Helper::serverProtocol().'://'.$server.OC::$WEBROOT.'/index.php';
header("Location: $url");
exit();
}
}
self::initSession();
self::initTemplateEngine();
self::checkUpgrade();
$errors=OC_Util::checkServer();
if(count($errors)>0) {
OC_Template::printGuestPage('', 'error', array('errors' => $errors));
exit;
}
// TODO: we should get rid of this one, too
// WARNING: to make everything even more confusing,
// DATADIRECTORY is a var that changes and DATADIRECTORY_ROOT
// stays the same, but is set by "datadirectory".
// Any questions?
OC::$CONFIG_DATADIRECTORY = OC_Config::getValue( "datadirectory", OC::$SERVERROOT."/data" );
// User and Groups
if( !OC_Config::getValue( "installed", false )){
$_SESSION['user_id'] = '';
}
OC_User::useBackend( OC_Config::getValue( "userbackend", "database" ));
OC_Group::useBackend(new OC_Group_Database());
// Set up file system unless forbidden
global $RUNTIME_NOSETUPFS;
if(!$RUNTIME_NOSETUPFS ){
OC_Util::setupFS();
}
// 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'));
if (OC_Config::getValue('installed', false)) {
if (!OC_AppConfig::getValue('core', 'remote_core.css', false)) {
OC_AppConfig::setValue('core', 'remote_core.css', '/core/minimizer.php');
OC_AppConfig::setValue('core', 'remote_core.js', '/core/minimizer.php');
}
}
//parse the given parameters
self::$REQUESTEDAPP = (isset($_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, '?'));
$param = substr(self::$REQUESTEDAPP, strpos(self::$REQUESTEDAPP, '?') + 1);
parse_str($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)){
$subdir = OC::$APPSROOT . '/apps/' . self::$REQUESTEDAPP . '/' . self::$REQUESTEDFILE;
$parent = OC::$APPSROOT . '/apps/' . self::$REQUESTEDAPP;
if(!OC_Helper::issubdirectory($subdir, $parent)){
self::$REQUESTEDFILE = null;
header('HTTP/1.0 404 Not Found');
exit;
}
}
}
}
// define runtime variables - unless this already has been done
if( !isset( $RUNTIME_NOSETUPFS )){
$RUNTIME_NOSETUPFS = false;
}
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();