downloadBL.php 4.32 KB
<?php
/**
 * $Id$
 *
 * Contains the business logic required to download a document.
 *
 * Expected form varaibles:
 *   o $fDocumentID - Primary key of document to view
 *
 * Copyright (c) 2003 Jam Warehouse http://www.jamwarehouse.com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * @version $Revision$
 * @author Michael Joseph <michael@jamwarehouse.com>, Jam Warehouse (Pty) Ltd, South Africa
 * @package documentmanagement
 */

require_once("../../../../config/dmsDefaults.php");

KTUtil::extractGPC('fDocumentID', 'fForInlineView', 'fVersion');

require_once("$default->fileSystemRoot/lib/security/Permission.inc");
require_once("$default->fileSystemRoot/lib/documentmanagement/PhysicalDocumentManager.inc");
require_once("$default->fileSystemRoot/lib/documentmanagement/DocumentTransaction.inc");
require_once("$default->fileSystemRoot/lib/documentmanagement/Document.inc");
require_once("$default->fileSystemRoot/lib/visualpatterns/PatternCustom.inc");

require_once(KT_LIB_DIR . '/storage/storagemanager.inc.php');
$oStorage =& KTStorageManagerUtil::getSingleton();

// start the session for a download- workaround for the IE SSL bug
if (!checkSession(true)) {
    exit(0);
}

if (!isset($fDocumentID)) {
    require_once("$default->fileSystemRoot/presentation/webpageTemplate.inc");
    $oPatternCustom = new PatternCustom();
    $oPatternCustom->setHtml("<a href=\"javascript:history.go(-1)\"><img src=\"" . KTHtml::getBackButton() . "\" border=\"0\" /></a>\n");
    $main->setErrorMessage(_("You have not chosen a document to view"));
    $main->setCentralPayload($oPatternCustom);            
    $main->render();
    exit(0);
}

$oDocument = Document::get($fDocumentID);
if (!Permission::userHasDocumentReadPermission($oDocument)) {
    require_once("$default->fileSystemRoot/presentation/webpageTemplate.inc");
    $oPatternCustom = new PatternCustom();    		
    if ($oDocument) {
        $oPatternCustom->setHtml("<a href=\"" . generateControllerLink("browse", "fFolderID=" . $oDocument->getFolderID()) . "\"><img src=\"" . KTHtml::getBackButton() . "\" border=\"0\" /></a>\n");
    } else {
        $oPatternCustom->setHtml("<a href=\"javascript:history.go(-1)\"><img src=\"" . KTHtml::getBackButton() . "\" border=\"0\" /></a>\n");
    }
    $main->setErrorMessage(_("Either you do not have permission to view this document, or the document you have chosen no longer exists on the file system."));
    $main->setCentralPayload($oPatternCustom);            
    $main->render();
    exit(0);
}

if (isset($fForInlineView)) {
    $oDocumentTransaction = & new DocumentTransaction($fDocumentID, "Inline view", VIEW);
    $oDocumentTransaction->create();
    PhysicalDocumentManager::inlineViewPhysicalDocument($fDocumentID);			
    exit(0);
}

//if the user has document read permission, perform the download
if (isset($fVersion)) {
    // we're downloading an old version of the document
    $oDocumentTransaction = & new DocumentTransaction($fDocumentID, "Document version $fVersion downloaded", DOWNLOAD);
    $oDocumentTransaction->create();
    
    // if the document is currently checked out, and we're the version we're downloading
    // is the same as the current version, then download the current version of the document	                
    if ($oDocument->getIsCheckedOut() && ($fVersion == $oDocument->getVersion())) {
        $oStorage->download($oDocument);	                	
    } else {
        PhysicalDocumentManager::downloadVersionedPhysicalDocument($fDocumentID, $fVersion);
    }
    exit(0);
}

// download the current version
$oDocumentTransaction = & new DocumentTransaction($fDocumentID, "Document downloaded", DOWNLOAD);
$oDocumentTransaction->create();
$oStorage->download($oDocument);
exit(0);

?>