class.ilFileUploadUtil.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */
 
class ilFileUploadUtil
{
        public static function isUploadAllowed($a_ref_id, $a_type = "")
        {
                global $objDefinition, $ilAccess;
                
                if (self::isUploadSupported())
                {
                        include_once("./Services/FileUpload/classes/class.ilFileUploadSettings.php");
                        
                        // repository upload enabled?
                        if (ilFileUploadSettings::isDragAndDropUploadEnabled() &&
                                ilFileUploadSettings::isRepositoryDragAndDropUploadEnabled())
                        {               
                                if ($a_type == "")
                                        $a_type = ilObject::_lookupType($a_ref_id, true);
                                
                                if ($objDefinition->isContainer($a_type))
                                        return $ilAccess->checkAccess("create_file", "", $a_ref_id, "file");
                        }
                }
                
                return false;
        }
        
        public static function isUploadSupported()
        {
                global $ilCtrl;
                
                // right now, only the repository is supported
                if (strtolower($_GET["baseClass"]) == "ilrepositorygui")
                {
                        $cmd = $ilCtrl->getCmd();
                        if ($cmd == "" || $cmd == "view" || $cmd == "render")
                                return true;
                }
                        
                return false;
        }
        
        public static function getMaxFileSize()
        {
                // get the value for the maximal uploadable filesize from the php.ini (if available)
                $umf = ini_get("upload_max_filesize");
                // get the value for the maximal post data from the php.ini (if available)
                $pms = ini_get("post_max_size");
                
                //convert from short-string representation to "real" bytes
                $multiplier_a=array("K" => 1024, "M" => 1024 * 1024, "G" => 1024 * 1024 * 1024);
                
                $umf_parts=preg_split("/(\d+)([K|G|M])/", $umf, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
                $pms_parts=preg_split("/(\d+)([K|G|M])/", $pms, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
                
                if (count($umf_parts) == 2) {
                        $umf = $umf_parts[0]*$multiplier_a[$umf_parts[1]];
                }
                if (count($pms_parts) == 2) {
                        $pms = $pms_parts[0]*$multiplier_a[$pms_parts[1]];
                }
                
                // use the smaller one as limit
                $max_filesize = min($umf, $pms);
                
                if (!$max_filesize) 
                        $max_filesize=max($umf, $pms);
                
                return $max_filesize;
        }
        
        public static function getMaxFileSizeString()
        {
                $max_filesize = self::getMaxFileSize();
                
                // format for display in mega-bytes
                return sprintf("%.1f MB", $max_filesize / 1024 / 1024);
        }
}
?>