nextcloud/inc/lib_base.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 Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
// set some stuff
ob_start();
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// error_reporting(E_ALL | E_STRICT);
error_reporting(E_ALL); // MDB2 gives loads of strict error, disabling for now
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date_default_timezone_set('Europe/Berlin');
ini_set('arg_separator.output','&amp;');
ini_set('session.cookie_httponly','1;');
session_start();
// calculate the documentroot
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$SERVERROOT=substr(__FILE__,0,-17);
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$DOCUMENTROOT=realpath($_SERVER['DOCUMENT_ROOT']);
$SERVERROOT=str_replace("\\",'/',$SERVERROOT);
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$SUBURI=substr(realpath($_SERVER["SCRIPT_FILENAME"]),strlen($SERVERROOT));
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$WEBROOT=substr($_SERVER["SCRIPT_NAME"],0,strlen($_SERVER["SCRIPT_NAME"])-strlen($SUBURI));
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if($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.$SERVERROOT.'/config');
// define default config values
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$CONFIG_INSTALLED=false;
$CONFIG_DATADIRECTORY=$SERVERROOT.'/data';
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$CONFIG_BACKUPDIRECTORY=$SERVERROOT.'/backup';
$CONFIG_HTTPFORCESSL=false;
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$CONFIG_ENABLEBACKUP=false;
$CONFIG_DATEFORMAT='j M Y G:i';
$CONFIG_DBNAME='owncloud';
$CONFIG_DBTYPE='sqlite';
$CONFIG_FILESYSTEM=array();
// include the generated configfile
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@include_once($SERVERROOT.'/config/config.php');
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$CONFIG_DATADIRECTORY_ROOT=$CONFIG_DATADIRECTORY;// store this in a seperate variable so we can change the data directory to jail users.
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// redirect to https site if configured
if(isset($CONFIG_HTTPFORCESSL) and $CONFIG_HTTPFORCESSL){
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if(!isset($_SERVER['HTTPS']) or $_SERVER['HTTPS'] != 'on') {
$url = "https://". $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
header("Location: $url");
exit;
}
}
// load core libs
oc_require_once('lib_files.php');
oc_require_once('lib_filesystem.php');
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oc_require_once('lib_filestorage.php');
oc_require_once('lib_fileobserver.php');
oc_require_once('lib_log.php');
oc_require_once('lib_config.php');
oc_require_once('lib_user.php');
oc_require_once('lib_ocs.php');
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@oc_require_once('MDB2.php');
@oc_require_once('MDB2/Schema.php');
oc_require_once('lib_connect.php');
oc_require_once('lib_remotestorage.php');
oc_require_once('lib_plugin.php');
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OC_PLUGIN::loadPlugins();
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if(!isset($CONFIG_BACKEND)){
$CONFIG_BACKEND='database';
}
OC_USER::setBackend($CONFIG_BACKEND);
OC_UTIL::setupFS();
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// check if the server is correctly configured for ownCloud
OC_UTIL::checkserver();
// listen for login or logout actions
OC_USER::logoutlisener();
$loginresult=OC_USER::loginlisener();
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/**
* Class for utility functions
*
*/
class OC_UTIL {
public static $scripts=array();
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public static $styles=array();
private static $fsSetup=false;
public static function setupFS(){// configure the initial filesystem based on the configuration
if(self::$fsSetup){//setting up the filesystem twice can only lead to trouble
return false;
}
global $SERVERROOT;
global $CONFIG_DATADIRECTORY_ROOT;
global $CONFIG_DATADIRECTORY;
global $CONFIG_BACKUPDIRECTORY;
global $CONFIG_ENABLEBACKUP;
global $CONFIG_FILESYSTEM;
if(!is_dir($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(OC_USER::isLoggedIn()){ //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($CONFIG_ENABLEBACKUP){
if(!is_dir($CONFIG_BACKUPDIRECTORY)){
mkdir($CONFIG_BACKUPDIRECTORY);
}
if(!is_dir($CONFIG_BACKUPDIRECTORY.'/'.$_SESSION['username_clean'])){
mkdir($CONFIG_BACKUPDIRECTORY.'/'.$_SESSION['username_clean']);
}
$backupStorage=OC_FILESYSTEM::createStorage('local',array('datadir'=>$CONFIG_BACKUPDIRECTORY));
$backup=new OC_FILEOBSERVER_BACKUP(array('storage'=>$backupStorage));
$rootStorage->addObserver($backup);
}
OC_FILESYSTEM::mount($rootStorage,'/');
$CONFIG_DATADIRECTORY=$CONFIG_DATADIRECTORY_ROOT.'/'.$_SESSION['username_clean'];
if(!is_dir($CONFIG_DATADIRECTORY)){
mkdir($CONFIG_DATADIRECTORY);
}
//set up the other storages according to the system settings
foreach($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('/'.$_SESSION['username_clean']);
self::$fsSetup=true;
}
}
/**
* get the current installed version of ownCloud
* @return array
*/
public static function getVersion(){
return array(1,0,60);
}
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/**
* add a javascript file
*
* @param url $url
*/
public static function addScript($url){
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self::$scripts[]=$url;
}
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/**
* add a css file
*
* @param url $url
*/
public static function addStyle($url){
self::$styles[]=$url;
}
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/**
* array to store all the optional navigation buttons of the plugins
*
*/
static private $NAVIGATION = array();
/**
* check if the current server configuration is suitable for ownCloud
*
*/
public static function checkServer(){
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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 $CONFIG_DBNAME;
if($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);
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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);
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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/>';
}
}
}
if($error){
die($error);
}
}
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/**
* show the header of the web GUI
*
*/
public static function showHeader(){
global $CONFIG_ADMINLOGIN;
global $WEBROOT;
oc_require('templates/header.php');;
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}
/**
* check if we need to use the layout optimized for smaller screen, currently only checks for iPhone/Android
* @return bool
*/
public static function hasSmallScreen(){
$userAgent=strtolower($_SERVER['HTTP_USER_AGENT']);
if(strpos($userAgent,'android') or strpos($userAgent,'iphone') or strpos($userAgent,'ipod')){//todo, add support for more devices
return true;
}
return false;
}
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/**
* show the footer of the web GUI
*
*/
public static function showFooter(){
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global $CONFIG_FOOTEROWNERNAME;
global $CONFIG_FOOTEROWNEREMAIL;
oc_require('templates/footer.php');;
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}
/**
* add an navigationentry to the main navigation
*
* @param name $name
* @param url $url
*/
public static function addNavigationEntry($name,$url) {
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$entry=array();
$entry['name']=$name;
$entry['url']=$url;
OC_UTIL::$NAVIGATION[]=$entry;
}
/**
* show the main navigation
*
*/
public static function showNavigation(){
global $WEBROOT;
global $SERVERROOT;
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echo('<table class="center" cellpadding="5" cellspacing="0" border="0"><tr>');
echo('<td class="navigationitem1"><a href="'.$WEBROOT.'/">'.$_SESSION['username'].'</a></td>');
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if($_SERVER['SCRIPT_NAME']==$WEBROOT.'/index.php') echo('<td class="navigationitemselected"><a href="'.$WEBROOT.'/">Files</a></td>'); else echo('<td class="navigationitem"><a href="'.$WEBROOT.'/">Files</a></td>');
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foreach(OC_UTIL::$NAVIGATION as $NAVI) {
if(dirname($_SERVER['SCRIPT_NAME'])==$WEBROOT.$NAVI['url']) echo('<td class="navigationitemselected"><a href="'.$WEBROOT.$NAVI['url'].'">'.$NAVI['name'].'</a></td>'); else echo('<td class="navigationitem"><a href="'.$WEBROOT.$NAVI['url'].'">'.$NAVI['name'].'</a></td>');
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}
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if($_SERVER['SCRIPT_NAME']==$WEBROOT.'/log/index.php') echo('<td class="navigationitemselected"><a href="'.$WEBROOT.'/log">Log</a></td>'); else echo('<td class="navigationitem"><a href="'.$WEBROOT.'/log">Log</a></td>');
if($_SERVER['SCRIPT_NAME']==$WEBROOT.'/settings/index.php') echo('<td class="navigationitemselected"><a href="'.$WEBROOT.'/settings">Settings</a></td>'); else echo('<td class="navigationitem"><a href="'.$WEBROOT.'/settings">Settings</a></td>');
echo('<td class="navigationitem"><a href="?logoutbutton=1">Logout</a></td>');
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echo('</tr></table>');
}
/**
* show the loginform
*
*/
public static function showLoginForm(){
global $loginresult;
oc_require('templates/loginform.php');
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}
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/**
* show an icon for a filetype
*
*/
public static function showIcon($filetype){
global $WEBROOT;
if($filetype=='dir'){ echo('<td><img src="'.$WEBROOT.'/img/icons/folder.png" width="16" height="16"></td>');
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}elseif($filetype=='foo'){ echo('<td>foo</td>');
}else{ echo('<td><img src="'.$WEBROOT.'/img/icons/other.png" width="16" height="16"></td>');
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}
}
}
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/**
* Class for database access
*
*/
class OC_DB {
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static private $DBConnection=false;
static private $schema=false;
static private $affected=0;
static private $result=false;
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/**
* connect to the datbase if not already connected
*/
public static function connect(){
global $CONFIG_DBNAME;
global $CONFIG_DBHOST;
global $CONFIG_DBUSER;
global $CONFIG_DBPASSWORD;
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global $CONFIG_DBTYPE;
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global $DOCUMENTROOT;
global $SERVERROOT;
if(!self::$DBConnection){
$options = array(
'portability' => MDB2_PORTABILITY_ALL,
'log_line_break' => '<br>',
'idxname_format' => '%s',
'debug' => true,
'quote_identifier' => true,
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);
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if($CONFIG_DBTYPE=='sqlite'){
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$dsn = array(
'phptype' => 'sqlite',
'database' => $SERVERROOT.'/'.$CONFIG_DBNAME,
'mode' => '0644',
);
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}elseif($CONFIG_DBTYPE=='mysql'){
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$dsn = array(
'phptype' => 'mysql',
'username' => $CONFIG_DBUSER,
'password' => $CONFIG_DBPASSWORD,
'hostspec' => $CONFIG_DBHOST,
'database' => $CONFIG_DBNAME,
);
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}elseif($CONFIG_DBTYPE=='pgsql'){
$dsn = array(
'phptype' => 'pgsql',
'username' => $CONFIG_DBUSER,
'password' => $CONFIG_DBPASSWORD,
'hostspec' => $CONFIG_DBHOST,
'database' => $CONFIG_DBNAME,
);
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}
self::$DBConnection=&MDB2::factory($dsn,$options);
if (PEAR::isError(self::$DBConnection)) {
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echo('<b>can not connect to database, using '.$CONFIG_DBTYPE.'. ('.self::$DBConnection->getUserInfo().')</center>');
die(self::$DBConnection->getMessage());
}
self::$DBConnection->setFetchMode(MDB2_FETCHMODE_ASSOC);
}
}
public static function connectScheme(){
self::connect();
if(!self::$schema){
self::$schema=&MDB2_Schema::factory(self::$DBConnection);
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}
}
/**
* executes a query on the database
*
* @param string $cmd
* @return result-set
*/
static function query($cmd){
global $CONFIG_DBTYPE;
if(!trim($cmd)){
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return false;
}
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OC_DB::connect();
if($CONFIG_DBTYPE=='sqlite'){//fix differences between sql versions
$cmd=str_replace('`','',$cmd);
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}elseif($CONFIG_DBTYPE=='pgsql'){
$cmd=str_replace('`','"',$cmd);
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}
$result=self::$DBConnection->exec($cmd);
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if (PEAR::isError($result)) {
$entry='DB Error: "'.$result->getMessage().'"<br />';
$entry.='Offending command was: '.$cmd.'<br />';
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error_log($entry);
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die($entry);
}else{
self::$affected=$result;
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}
self::$result=$result;
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return $result;
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}
/**
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* executes a query on the database and returns the result in an array
*
* @param string $cmd
* @return result-set
*/
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static function select($cmd){
OC_DB::connect();
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global $CONFIG_DBTYPE;
if($CONFIG_DBTYPE=='sqlite'){//fix differences between sql versions
$cmd=str_replace('`','',$cmd);
}elseif($CONFIG_DBTYPE=='pgsql'){
$cmd=str_replace('`','"',$cmd);
}
$result=self::$DBConnection->queryAll($cmd);
if (PEAR::isError($result)) {
$entry='DB Error: "'.$result->getMessage().'"<br />';
$entry.='Offending command was: '.$cmd.'<br />';
die($entry);
}
return $result;
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}
/**
* executes multiply queries on the database
*
* @param string $cmd
* @return result-set
*/
static function multiquery($cmd) {
$queries=explode(';',$cmd);
foreach($queries as $query){
OC_DB::query($query);
}
return true;
}
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/**
* closing a db connection
*
* @return bool
*/
static function close() {
self::$DBConnection->disconnect();
self::$DBConnection=false;
}
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/**
* Returning primarykey if last statement was an insert.
*
* @return primarykey
*/
static function insertid() {
$id=self::$DBConnection->lastInsertID();
return $id;
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}
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/**
* Returning number of rows in a result
*
* @param resultset $result
* @return int
*/
static function numrows($result) {
$result->numRows();
}
/**
* Returning number of affected rows
*
* @return int
*/
static function affected_rows() {
return self::$affected;
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}
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/**
* get a field from the resultset
*
* @param resultset $result
* @param int $i
* @param int $field
* @return unknown
*/
static function result($result, $i, $field) {
$tmp=$result->fetchRow(MDB2_FETCHMODE_ASSOC,$i);
$tmp=$tmp[$field];
return($tmp);
}
/**
* get data-array from resultset
*
* @param resultset $result
* @return data
*/
static function fetch_assoc($result){
return $result->fetchRow(MDB2_FETCHMODE_ASSOC);
}
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/**
* Freeing resultset (performance)
*
* @param unknown_type $result
* @return bool
*/
static function free_result() {
if(self::$result){
self::$result->free();
self::$result=false;
}
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}
static public function disconnect(){
if(self::$DBConnection){
self::$DBConnection->disconnect();
self::$DBConnection=false;
}
}
/**
* escape strings so they can be used in queries
*
* @param string string
* @return string
*/
static function escape($string){
OC_DB::connect();
return self::$DBConnection->escape($string);
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}
static function getDbStructure($file){
OC_DB::connectScheme();
$definition = self::$schema->getDefinitionFromDatabase();
$dump_options = array(
'output_mode' => 'file',
'output' => $file,
'end_of_line' => "\n"
);
self::$schema->dumpDatabase($definition, $dump_options, MDB2_SCHEMA_DUMP_STRUCTURE);
}
static function createDbFromStructure($file){
OC_DB::connectScheme();
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global $CONFIG_DBNAME;
global $CONFIG_DBTABLEPREFIX;
$content=file_get_contents($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);
$definition=@self::$schema->parseDatabaseDefinitionFile($file2);
unlink($file2);
if($definition instanceof MDB2_Schema_Error){
die($definition->getMessage() . ': ' . $definition->getUserInfo());
}
$ret=@self::$schema->createDatabase($definition);
if($ret instanceof MDB2_Error) {
die ($ret->getMessage() . ': ' . $ret->getUserInfo());
}else{
return true;
}
}
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}
//custom require/include functions because not all hosts allow us to set the include path
function oc_require($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)){
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return require($file);
}elseif(is_file($SERVERROOT.'/'.$file)){
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return require($SERVERROOT.'/'.$file);
}elseif(is_file($SERVERROOT.'/inc/'.$file)){
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return require($SERVERROOT.'/inc/'.$file);
}
}
function oc_require_once($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)){
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return require_once($file);
}elseif(is_file($SERVERROOT.'/'.$file)){
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return require_once($SERVERROOT.'/'.$file);
}elseif(is_file($SERVERROOT.'/inc/'.$file)){
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return require_once($SERVERROOT.'/inc/'.$file);
}
}
function oc_include($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)){
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return include($file);
}elseif(is_file($SERVERROOT.'/'.$file)){
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return include($SERVERROOT.'/'.$file);
}elseif(is_file($SERVERROOT.'/inc/'.$file)){
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return include($SERVERROOT.'/inc/'.$file);
}
}
function oc_include_once($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 $CONFIG_INSTALLED;
if(is_file($SERVERROOT.'/'.$file)){
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return include_once($SERVERROOT.'/'.$file);
}elseif(is_file($SERVERROOT.'/inc/'.$file)){
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return include_once($SERVERROOT.'/inc/'.$file);
}elseif(is_file($file)){
return include_once($file);
}
}
function chmodr($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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?>