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server/lib/base.php
Jakob Sack f1015c88fa Minor bug fixing
2011-04-15 23:09:05 +02:00

786 lines
21 KiB
PHP
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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @copyright 2010 Frank Karlitschek karlitschek@kde.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/>.
*
*/
// set some stuff
//ob_start();
// error_reporting(E_ALL | E_STRICT);
error_reporting( E_ERROR | E_PARSE | E_WARNING ); // MDB2 gives loads of strict error, disabling for now
date_default_timezone_set('Europe/Berlin');
ini_set('arg_separator.output','&amp;');
ini_set('session.cookie_httponly','1;');
session_start();
// calculate the documentroot
$SERVERROOT=substr(__FILE__,0,-13);
$DOCUMENTROOT=realpath($_SERVER['DOCUMENT_ROOT']);
$SERVERROOT=str_replace("\\",'/',$SERVERROOT);
$SUBURI=substr(realpath($_SERVER["SCRIPT_FILENAME"]),strlen($SERVERROOT));
$WEBROOT=substr($_SERVER["SCRIPT_NAME"],0,strlen($_SERVER["SCRIPT_NAME"])-strlen($SUBURI));
if($WEBROOT!='' and $WEBROOT[0]!=='/'){
$WEBROOT='/'.$WEBROOT;
}
// set the right include path
// set_include_path(get_include_path().PATH_SEPARATOR.$SERVERROOT.PATH_SEPARATOR.$SERVERROOT.'/inc'.PATH_SEPARATOR.$SERVERROOT.'/config');
// define runtime variables - unless this already has been done
if( !isset( $RUNTIME_NOSETUPFS )){
$RUNTIME_NOSETUPFS = false;
}
// define default config values
$CONFIG_INSTALLED=false;
$CONFIG_DATADIRECTORY=$SERVERROOT.'/data';
$CONFIG_BACKUPDIRECTORY=$SERVERROOT.'/backup';
$CONFIG_HTTPFORCESSL=false;
$CONFIG_ENABLEBACKUP=false;
$CONFIG_DATEFORMAT='j M Y G:i';
$CONFIG_DBNAME='owncloud';
$CONFIG_DBTYPE='sqlite';
$CONFIG_FILESYSTEM=array();
// include the generated configfile
@include_once($SERVERROOT.'/config/config.php');
$CONFIG_DATADIRECTORY_ROOT=$CONFIG_DATADIRECTORY;// store this in a seperate variable so we can change the data directory to jail users.
// redirect to https site if configured
if(isset($CONFIG_HTTPFORCESSL) and $CONFIG_HTTPFORCESSL){
if(!isset($_SERVER['HTTPS']) or $_SERVER['HTTPS'] != 'on') {
$url = "https://". $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
header("Location: $url");
exit;
}
}
// load core libs
oc_require_once('helper.php');
oc_require_once('app.php');
oc_require_once('files.php');
oc_require_once('filesystem.php');
oc_require_once('filestorage.php');
oc_require_once('fileobserver.php');
oc_require_once('log.php');
oc_require_once('config.php');
oc_require_once('user.php');
oc_require_once('group.php');
oc_require_once('ocs.php');
oc_require_once('connect.php');
oc_require_once('remotestorage.php');
oc_require_once('plugin.php');
OC_PLUGIN::loadPlugins( "" );
if(!isset($CONFIG_BACKEND)){
$CONFIG_BACKEND='database';
}
OC_USER::setBackend( $CONFIG_BACKEND );
OC_GROUP::setBackend( $CONFIG_BACKEND );
// Set up file system unless forbidden
if( !$RUNTIME_NOSETUPFS ){
OC_UTIL::setupFS();
}
// Add the stuff we need always
OC_APP::addPersonalMenuEntry( array( "order" => 1000, "href" => OC_HELPER::linkTo( "", "index.php?logout=1" ), "name" => "Logout" ));
OC_UTIL::addScript( "jquery-1.5.min" );
OC_UTIL::addScript( "jquery-ui-1.8.10.custom.min" );
OC_UTIL::addScript( "js" );
OC_UTIL::addStyle( "jquery-ui-1.8.10.custom" );
OC_UTIL::addStyle( "styles" );
// Load Apps
OC_APP::loadApps();
// check if the server is correctly configured for ownCloud
OC_UTIL::checkserver();
/**
* Class for utility functions
*
*/
class OC_UTIL {
public static $scripts=array();
public static $styles=array();
private static $fsSetup=false;
// Can be set up
public static function setupFS( $user = "", $root = "files" ){// configure the initial filesystem based on the configuration
if(self::$fsSetup){//setting up the filesystem twice can only lead to trouble
return false;
}
// Global Variables
global $SERVERROOT;
global $CONFIG_DATADIRECTORY_ROOT;
global $CONFIG_DATADIRECTORY;
global $CONFIG_BACKUPDIRECTORY;
global $CONFIG_ENABLEBACKUP;
global $CONFIG_FILESYSTEM;
// Create root dir
if(!is_dir($CONFIG_DATADIRECTORY_ROOT)){
@mkdir($CONFIG_DATADIRECTORY_ROOT) or die("Can't create data directory ($CONFIG_DATADIRECTORY_ROOT), you can usually fix this by setting the owner of '$SERVERROOT' to the user that the web server uses (www-data for debian/ubuntu)");
}
// If we are not forced to load a specific user we load the one that is logged in
if( $user == "" && OC_USER::isLoggedIn()){
$user = $_SESSION['user_id'];
}
if( $user != "" ){ //if we aren't logged in, there is no use to set up the filesystem
//first set up the local "root" storage and the backupstorage if needed
$rootStorage=OC_FILESYSTEM::createStorage('local',array('datadir'=>$CONFIG_DATADIRECTORY));
if($CONFIG_ENABLEBACKUP){
// This creates the Directorys recursively
if(!is_dir( "$CONFIG_BACKUPDIRECTORY/$user/$root" )){
mkdir( "$CONFIG_BACKUPDIRECTORY/$user/$root", 0755, true );
}
$backupStorage=OC_FILESYSTEM::createStorage('local',array('datadir'=>$CONFIG_BACKUPDIRECTORY));
$backup=new OC_FILEOBSERVER_BACKUP(array('storage'=>$backupStorage));
$rootStorage->addObserver($backup);
}
OC_FILESYSTEM::mount($rootStorage,'/');
$CONFIG_DATADIRECTORY = "$CONFIG_DATADIRECTORY_ROOT/$user/$root";
if( !is_dir( $CONFIG_DATADIRECTORY )){
mkdir( $CONFIG_DATADIRECTORY, 0755, true );
}
//set up the other storages according to the system settings
foreach($CONFIG_FILESYSTEM as $storageConfig){
if(OC_FILESYSTEM::hasStorageType($storageConfig['type'])){
$arguments=$storageConfig;
unset($arguments['type']);
unset($arguments['mountpoint']);
$storage=OC_FILESYSTEM::createStorage($storageConfig['type'],$arguments);
if($storage){
OC_FILESYSTEM::mount($storage,$storageConfig['mountpoint']);
}
}
}
//jail the user into his "home" directory
OC_FILESYSTEM::chroot("/$user/$root");
self::$fsSetup=true;
}
}
/**
* get the current installed version of ownCloud
* @return array
*/
public static function getVersion(){
return array(1,2,0);
}
/**
* add a javascript file
*
* @param url $url
*/
public static function addScript( $application, $file = null ){
if( is_null( $file )){
$file = $application;
$application = "";
}
self::$scripts[] = "$application/js/$file";
}
/**
* add a css file
*
* @param url $url
*/
public static function addStyle( $application, $file = null ){
if( is_null( $file )){
$file = $application;
$application = "";
}
self::$styles[] = "$application/css/$file";
}
/**
* check if the current server configuration is suitable for ownCloud
*
*/
public static function checkServer(){
global $SERVERROOT;
global $CONFIG_DATADIRECTORY_ROOT;
global $CONFIG_BACKUPDIRECTORY;
global $CONFIG_ENABLEBACKUP;
global $CONFIG_INSTALLED;
$error='';
if(!is_callable('sqlite_open') and !is_callable('mysql_connect')){
$error.='No database drivers (sqlite or mysql) installed.<br/>';
}
global $CONFIG_DBTYPE;
global $CONFIG_DBNAME;
if(!stristr(PHP_OS, 'WIN')){
if($CONFIG_DBTYPE=='sqlite'){
$file=$SERVERROOT.'/'.$CONFIG_DBNAME;
if(file_exists($file)){
$prems=substr(decoct(fileperms($file)),-3);
if(substr($prems,2,1)!='0'){
@chmod($file,0660);
clearstatcache();
$prems=substr(decoct(fileperms($file)),-3);
if(substr($prems,2,1)!='0'){
$error.='SQLite database file ('.$file.') is readable from the web<br/>';
}
}
}
}
$prems=substr(decoct(fileperms($CONFIG_DATADIRECTORY_ROOT)),-3);
if(substr($prems,-1)!='0'){
chmodr($CONFIG_DATADIRECTORY_ROOT,0770);
clearstatcache();
$prems=substr(decoct(fileperms($CONFIG_DATADIRECTORY_ROOT)),-3);
if(substr($prems,2,1)!='0'){
$error.='Data directory ('.$CONFIG_DATADIRECTORY_ROOT.') is readable from the web<br/>';
}
}
if($CONFIG_ENABLEBACKUP){
$prems=substr(decoct(fileperms($CONFIG_BACKUPDIRECTORY)),-3);
if(substr($prems,-1)!='0'){
chmodr($CONFIG_BACKUPDIRECTORY,0770);
clearstatcache();
$prems=substr(decoct(fileperms($CONFIG_BACKUPDIRECTORY)),-3);
if(substr($prems,2,1)!='0'){
$error.='Data directory ('.$CONFIG_BACKUPDIRECTORY.') is readable from the web<br/>';
}
}
}
}else{
//TODO: premisions checks for windows hosts
}
if($error){
die($error);
}
}
}
/**
* This class manages the hooks. It basically provides two functions: adding
* slots and emitting signals.
*/
class OC_HOOK{
static private $registered = array();
/**
* @brief connects a function to a hook
* @param $signalclass class name of emitter
* @param $signalname name of signal
* @param $slotclass class name of slot
* @param $slotname name of slot
* @returns true/false
*
* This function makes it very easy to connect to use hooks.
*
* TODO: write example
*/
static public function connect( $signalclass, $signalname, $slotclass, $slotname ){
// Cerate the data structure
if( !array_key_exists( $signalclass, self::$registered )){
self::$registered[$signalclass] = array();
}
if( !array_key_exists( $signalname, self::$registered[$signalclass] )){
self::$registered[$signalclass][$signalname] = array();
}
// register hook
self::$registered[$signalclass][$signalname][] = array(
"class" => $slotclass,
"name" => $slotname );
// No chance for failure ;-)
return true;
}
/**
* @brief emitts a signal
* @param $signalclass class name of emitter
* @param $signalname name of signal
* @param $params defautl: array() array with additional data
* @returns true if slots exists or false if not
*
* Emits a signal. To get data from the slot use references!
*
* TODO: write example
*/
static public function emit( $signalclass, $signalname, $params = array()){
// Return false if there are no slots
if( !array_key_exists( $signalclass, self::$registered )){
return false;
}
if( !array_key_exists( $signalname, self::$registered[$signalclass] )){
return false;
}
// Call all slots
foreach( $registered[$signalclass][$signalname] as $i ){
call_user_func( array( $i["class"], $i["name"] ), $params );
}
// return true
return true;
}
}
/**
* This class manages the access to the database. It basically is a wrapper for
* MDB2 with some adaptions.
*/
class OC_DB {
static private $DBConnection=false;
static private $schema=false;
static private $affected=0;
static private $result=false;
/**
* @brief connects to the database
* @returns true if connection can be established or nothing (die())
*
* Connects to the database as specified in config.php
*/
static public function connect(){
// The global data we need
global $CONFIG_DBNAME;
global $CONFIG_DBHOST;
global $CONFIG_DBUSER;
global $CONFIG_DBPASSWORD;
global $CONFIG_DBTYPE;
global $DOCUMENTROOT;
global $SERVERROOT;
// do nothing if the connection already has been established
if(!self::$DBConnection){
// Require MDB2.php (TODO: why here not in head of file?)
@oc_require_once('MDB2.php');
// Prepare options array
$options = array(
'portability' => MDB2_PORTABILITY_ALL,
'log_line_break' => '<br>',
'idxname_format' => '%s',
'debug' => true,
'quote_identifier' => true );
// Add the dsn according to the database type
if( $CONFIG_DBTYPE == 'sqlite' ){
// sqlite
$dsn = array(
'phptype' => 'sqlite',
'database' => "$SERVERROOT/$CONFIG_DBNAME",
'mode' => '0644' );
}
elseif( $CONFIG_DBTYPE == 'mysql' ){
// MySQL
$dsn = array(
'phptype' => 'mysql',
'username' => $CONFIG_DBUSER,
'password' => $CONFIG_DBPASSWORD,
'hostspec' => $CONFIG_DBHOST,
'database' => $CONFIG_DBNAME );
}
elseif( $CONFIG_DBTYPE == 'pgsql' ){
// PostgreSQL
$dsn = array(
'phptype' => 'pgsql',
'username' => $CONFIG_DBUSER,
'password' => $CONFIG_DBPASSWORD,
'hostspec' => $CONFIG_DBHOST,
'database' => $CONFIG_DBNAME );
}
// Try to establish connection
self::$DBConnection = MDB2::factory( $dsn, $options );
// Die if we could not connect
if( PEAR::isError( self::$DBConnection )){
echo( '<b>can not connect to database, using '.$CONFIG_DBTYPE.'. ('.self::$DBConnection->getUserInfo().')</center>');
$error = self::$DBConnection->getMessage();
error_log( $error);
error_log( self::$DBConnection->getUserInfo());
die( $error );
}
// We always, really always want associative arrays
self::$DBConnection->setFetchMode(MDB2_FETCHMODE_ASSOC);
}
// we are done. great!
return true;
}
/**
* @brief SQL query
* @param $query Query string
* @returns result as MDB2_Result
*
* SQL query via MDB2 query()
*/
static public function query( $query ){
// Optimize the query
$query = self::processQuery( $query );
self::connect();
//fix differences between sql versions
// return the result
$result = self::$DBConnection->exec( $query );
// Die if we have an error (error means: bad query, not 0 results!)
if( PEAR::isError($result)) {
$entry = 'DB Error: "'.$result->getMessage().'"<br />';
$entry .= 'Offending command was: '.$cmd.'<br />';
error_log( $entry );
die( $entry );
}
return $result;
}
/**
* @brief Prepare a SQL query
* @param $query Query string
* @returns prepared SQL query
*
* SQL query via MDB2 prepare(), needs to be execute()'d!
*/
static public function prepare( $query ){
// Optimize the query
$query = self::processQuery( $query );
self::connect();
// return the result
$result = self::$DBConnection->prepare( $query );
// Die if we have an error (error means: bad query, not 0 results!)
if( PEAR::isError($result)) {
$entry = 'DB Error: "'.$result->getMessage().'"<br />';
$entry .= 'Offending command was: '.$cmd.'<br />';
error_log( $entry );
die( $entry );
}
return $result;
}
/**
* @brief gets last value of autoincrement
* @returns id
*
* MDB2 lastInsertID()
*
* Call this method right after the insert command or other functions may
* cause trouble!
*/
public static function insertid(){
self::connect();
return self::$DBConnection->lastInsertID();
}
/**
* @brief Disconnect
* @returns true/false
*
* This is good bye, good bye, yeah!
*/
public static function disconnect(){
// Cut connection if required
if(self::$DBConnection){
self::$DBConnection->disconnect();
self::$DBConnection=false;
}
return true;
}
/**
* @brief Escapes bad characters
* @param $string string with dangerous characters
* @returns escaped string
*
* MDB2 escape()
*/
public static function escape( $string ){
self::connect();
return self::$DBConnection->escape( $string );
}
/**
* @brief saves database scheme to xml file
* @param $file name of file
* @returns true/false
*
* TODO: write more documentation
*/
public static function getDbStructure( $file ){
self::connectScheme();
// write the scheme
$definition = self::$schema->getDefinitionFromDatabase();
$dump_options = array(
'output_mode' => 'file',
'output' => $file,
'end_of_line' => "\n"
);
self::$schema->dumpDatabase( $definition, $dump_options, MDB2_SCHEMA_DUMP_STRUCTURE );
return true;
}
/**
* @brief Creates tables from XML file
* @param $file file to read structure from
* @returns true/false
*
* TODO: write more documentation
*/
public static function createDbFromStructure( $file ){
global $CONFIG_DBNAME;
global $CONFIG_DBTABLEPREFIX;
self::connectScheme();
// read file
$content = file_get_contents( $file );
// Make changes and save them to a temporary file
$file2 = tempnam( sys_get_temp_dir(), 'oc_db_scheme_' );
$content = str_replace( '*dbname*', $CONFIG_DBNAME, $content );
$content = str_replace( '*dbprefix*', $CONFIG_DBTABLEPREFIX, $content );
file_put_contents( $file2, $content );
// Try to create tables
$definition = @self::$schema->parseDatabaseDefinitionFile( $file2 );
// Delete our temporary file
unlink( $file2 );
// Die in case something went wrong
if( $definition instanceof MDB2_Schema_Error ){
die( $definition->getMessage().': '.$definition->getUserInfo());
}
$ret=@self::$schema->createDatabase( $definition );
// Die in case something went wrong
if( $ret instanceof MDB2_Error ){
die ($ret->getMessage() . ': ' . $ret->getUserInfo());
}
return true;
}
/**
* @brief connects to a MDB2 database scheme
* @returns true/false
*
* Connects to a MDB2 database scheme
*/
private static function connectScheme(){
// We need a database connection
self::connect();
// Connect if this did not happen before
if(!self::$schema){
@oc_require_once('MDB2/Schema.php');
self::$schema=&MDB2_Schema::factory(self::$DBConnection);
}
return true;
}
/**
* @brief does minor chages to query
* @param $query Query string
* @returns corrected query string
*
* This function replaces *PREFIX* with the value of $CONFIG_DBTABLEPREFIX
* and replaces the ` woth ' or " according to the database driver.
*/
private static function processQuery( $query ){
// We need Database type and table prefix
global $CONFIG_DBTYPE;
global $CONFIG_DBTABLEPREFIX;
// differences in escaping of table names (` for mysql)
// Problem: what if there is a ` in the value we want to insert?
if( $CONFIG_DBTYPE == 'sqlite' ){
$query = str_replace( '`', '\'', $query );
}
elseif( $CONFIG_DBTYPE == 'pgsql' ){
$query = str_replace( '`', '"', $query );
}
// replace table names
$query = str_replace( '*PREFIX*', $CONFIG_DBTABLEPREFIX, $query );
return $query;
}
}
//custom require/include functions because not all hosts allow us to set the include path
function oc_require($file){
global $SERVERROOT;
global $DOCUMENTROOT;
global $WEBROOT;
global $CONFIG_DBNAME;
global $CONFIG_DBHOST;
global $CONFIG_DBUSER;
global $CONFIG_DBPASSWORD;
global $CONFIG_DBTYPE;
global $CONFIG_DATADIRECTORY;
global $CONFIG_HTTPFORCESSL;
global $CONFIG_DATEFORMAT;
global $CONFIG_INSTALLED;
if(is_file($file)){
return require($file);
}
elseif(is_file($SERVERROOT.'/'.$file)){
return require($SERVERROOT.'/'.$file);
}
elseif(is_file($SERVERROOT.'/lib/'.$file)){
return require($SERVERROOT.'/lib/'.$file);
}
elseif(is_file($SERVERROOT.'/3dparty/'.$file)){
return require($SERVERROOT.'/3dparty/'.$file);
}
}
function oc_require_once($file){
global $SERVERROOT;
global $DOCUMENTROOT;
global $WEBROOT;
global $CONFIG_DBNAME;
global $CONFIG_DBHOST;
global $CONFIG_DBUSER;
global $CONFIG_DBPASSWORD;
global $CONFIG_DBTYPE;
global $CONFIG_DATADIRECTORY;
global $CONFIG_HTTPFORCESSL;
global $CONFIG_DATEFORMAT;
global $CONFIG_INSTALLED;
if(is_file($file)){
return require_once($file);
}
elseif(is_file($SERVERROOT.'/'.$file)){
return require_once($SERVERROOT.'/'.$file);
}
elseif(is_file($SERVERROOT.'/lib/'.$file)){
return require_once($SERVERROOT.'/lib/'.$file);
}
elseif(is_file($SERVERROOT.'/3dparty/'.$file)){
return require_once($SERVERROOT.'/3dparty/'.$file);
}
}
function oc_include($file){
global $SERVERROOT;
global $DOCUMENTROOT;
global $WEBROOT;
global $CONFIG_DBNAME;
global $CONFIG_DBHOST;
global $CONFIG_DBUSER;
global $CONFIG_DBPASSWORD;
global $CONFIG_DBTYPE;
global $CONFIG_DATADIRECTORY;
global $CONFIG_HTTPFORCESSL;
global $CONFIG_DATEFORMAT;
global $CONFIG_INSTALLED;
if(is_file($file)){
return include($file);
}
elseif(is_file($SERVERROOT.'/'.$file)){
return include($SERVERROOT.'/'.$file);
}
elseif(is_file($SERVERROOT.'/lib/'.$file)){
return include($SERVERROOT.'/lib/'.$file);
}
elseif(is_file($SERVERROOT.'/3dparty/'.$file)){
return include($SERVERROOT.'/3dparty/'.$file);
}
}
function oc_include_once($file){
global $SERVERROOT;
global $DOCUMENTROOT;
global $WEBROOT;
global $CONFIG_DBNAME;
global $CONFIG_DBHOST;
global $CONFIG_DBUSER;
global $CONFIG_DBPASSWORD;
global $CONFIG_DBTYPE;
global $CONFIG_DATADIRECTORY;
global $CONFIG_HTTPFORCESSL;
global $CONFIG_DATEFORMAT;
global $CONFIG_INSTALLED;
if(is_file($file)){
return include_once($file);
}
elseif(is_file($SERVERROOT.'/'.$file)){
return include_once($SERVERROOT.'/'.$file);
}
elseif(is_file($SERVERROOT.'/lib/'.$file)){
return include_once($SERVERROOT.'/lib/'.$file);
}
elseif(is_file($SERVERROOT.'/3dparty/'.$file)){
return include_once($SERVERROOT.'/3dparty/'.$file);
}
}
function chmodr($path, $filemode) {
// echo "$path<br/>";
if (!is_dir($path))
return chmod($path, $filemode);
$dh = opendir($path);
while (($file = readdir($dh)) !== false) {
if($file != '.' && $file != '..') {
$fullpath = $path.'/'.$file;
if(is_link($fullpath))
return FALSE;
elseif(!is_dir($fullpath) && !chmod($fullpath, $filemode))
return FALSE;
elseif(!chmodr($fullpath, $filemode))
return FALSE;
}
}
closedir($dh);
if(chmod($path, $filemode))
return TRUE;
else
return FALSE;
}
?>
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