root/downloadDatabase/files/lib/page/DownloadDBFileDownloadPage.class.php @ 715

<?php

// wcf imports
require_once(WCF_DIR.'lib/page/AbstractPage.class.php');
require_once(WCF_DIR.'lib/data/downloadDB/DownloadDBDataEditor.class.php');

/**
 * Download Database Datei Download
 *
 * @author              Robert "Tatzelwurm" Hempel
 * @copyright   2007/2008 INSIDE das Hrspiel
 * @license     GNU LGPL http://www.gnu.org/licenses/lgpl.txt
 * @package             de.inside.wcf.DownloadDatabase
 */

class DownloadDBFileDownloadPage extends AbstractPage {
        
        public $dataID;
        public $katID;
        private $fileName;
        private $fileType;
        private $linkType;
        private $link;
        
        public function readParameters() {
                parent :: readParameters();
                if (isset($_REQUEST['dataID'])) $this->dataID = intval($_REQUEST['dataID']);
                if (!$this->dataID){
                        require_once(WCF_DIR.'lib/system/exception/NamedUserException.class.php');
                        throw new NamedUserException(WCF::getLanguage()->get('wcf.dldb.wrongid'));
                        exit;
                }
                if (!WCF::getUser()->getPermission('user.dldb.canUseDownloadDB')){
                        require_once(WCF_DIR.'lib/system/exception/PermissionDeniedException.class.php');
                        throw new PermissionDeniedException();
                }
                if (!WCF::getUser()->getPermission('user.dldb.canDownloadFile')){
                        require_once(WCF_DIR.'lib/system/exception/PermissionDeniedException.class.php');
                        throw new PermissionDeniedException();
                }
                WCF::getCache()->addResource('dldbData',
                        WCF_DIR.'cache/cache.dldbData.php',
                        WCF_DIR.'lib/system/cache/CacheBuilderDLDBData.class.php');
        }

        public function show() {
                $this->readDaten();
                
                // Anzahl der Downloads erhöhen
                $sql = "UPDATE wcf".WCF_N."_dldb_data
                                SET downloads = downloads + 1
                                WHERE `dataID` = ".$this->dataID;
                $row = WCF::getDB()->registerShutdownUpdate($sql);

                // Download-Log speichern
                if (DOWNLOADDB_LOG) {
                        if (!WCF::getUser()->userID &&  DOWNLOADDB_LOG_GUESTS)          $this->xferSave();
                        if ( WCF::getUser()->userID && !DOWNLOADDB_LOG_ONLY_GUESTS) $this->xferSave();
                }
                
                // reset cache
                WCF::getCache()->clear(WCF_DIR.'cache/', 'cache.dldbData.php');

                // Link entschlÃŒsseln
                if ($this->linkType == 0) {
                        // Es liegt ein Upload vor.
                        $dataset = new downloadDBDataEditor($this->dataID);
                        $link = FileUtil::getRealPath(RELATIVE_WCF_DIR.$dataset->getURL());
                        $type = $this->fileType;
                }
                if ($this->linkType == 1) {
                        // Es liegt eine lokale Datei vor       
                        $link = $_SERVER['DOCUMENT_ROOT'].$this->link;
                        $type = $this->fileType;
                } 
                if ($this->linkType == 2) {
                        // Link ist eine URL
                        HeaderUtil::redirect($this->link,false);
                        exit;
                }
                
                // Set Download Infos
                @ header('Content-Description: File Transfer');
                @ header('Content-Type: '. $type);
                @ header('Content-disposition: attachment; filename="' . $this->fileName . '"');
                @ header('Content-Length: ' . filesize($link));
                @ header('Pragma: no-cache');
                @ header('Expires: 0');
                // Start Download
                @readfile($link);
        }
        
        protected function readDaten() {
                // Cache lesen
                $data = WCF::getCache()->get('dldbData');
                foreach ($data as $daten) {
                        if ($daten['dataID'] == $this->dataID) {
                                $this->linkType = $daten['linkType'];
                                $this->fileType = $daten['mimeType'];
                                $this->fileName = $daten['fileName'];
                                $this->link             = $daten['link'];
                                $this->katID    = $daten['katID'];
                                // Kontrolle der Zugangsberechtigung;
                                $IDs = explode(',',$daten['groupcheck']);
                                $daten['canViewCat'] = false;
                                foreach ($IDs as $gruppe) {
                                        if (in_array($gruppe, WCF::getUser()->getGroupIDs())) { 
                                                $daten['canViewCat'] = true;
                                        }
                                }
                                if ($daten['canViewCat'] != true){
                                        require_once(WCF_DIR.'lib/system/exception/PermissionDeniedException.class.php');
                                        throw new PermissionDeniedException();
                                }
                        }
                }
        }
        
        protected function xferSave() {
                $sql = "INSERT INTO wcf".WCF_N."_dldb_xfer
                                        (`dataID`, `katID`, `userID`, `ipadress`, `time`)
                                VALUES
                                        ('".intval($this->dataID)."',
                                         '".intval($this->katID)."',
                                         '".WCF::getUser()->userID."',
                                         '".escapeString(WCF::getSession()->ipAddress)."',
                                         '".TIME_NOW."'
                                         )";
                WCF::getDB()->sendQuery($sql);
        }
}
?>