001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.kns.web.struts.action;
017
018import org.apache.log4j.Logger;
019import org.apache.struts.config.ModuleConfig;
020import org.apache.struts.upload.CommonsMultipartRequestHandler;
021
022import java.util.List;
023
024/**
025 * Subclass of the MultipartRequestHandler used by Struts.  This one allows the maximum upload size to be set
026 * by the application rather than by an init parameter. 
027 * 
028 * @author Kuali Rice Team (rice.collab@kuali.org)
029 *
030 */
031public class KualiMultipartRequestHandler extends CommonsMultipartRequestHandler {
032    private static final Logger LOG = Logger.getLogger(KualiMultipartRequestHandler.class);
033
034    private String sizeMax;
035    
036    /**
037     * Returns the maximum allowable size, in bytes, of an uploaded file. The
038     * value is obtained from the current module's controller configuration.
039     *
040     * @param mc The current module's configuration.
041     *
042     * @return The maximum allowable file size, in bytes.
043     */
044    public long getSizeMax(ModuleConfig mc) {
045        return convertSizeToBytes( sizeMax, super.getSizeMax(mc) );
046    }
047
048    public String getSizeMaxString() {
049        return sizeMax;
050    }    
051
052    public void setSizeMax( String sizeString ) {
053        this.sizeMax = sizeString;
054    }
055    
056//    public long convertSizeToBytes(String sizeString, long defaultSize) {
057//      return super.convertSizeToBytes(sizeString, defaultSize);
058//    }
059    
060    /**
061     * Sets the max size string to the item in the list that represents the largest size.
062     */
063    public void setMaxUploadSizeToMaxOfList( List<String> sizes ) {
064        long maxSize = 0L;
065        for ( String size : sizes ) {
066            long currSize = convertSizeToBytes(size, 0L);
067            if ( currSize == 0L ) {
068                LOG.warn( "Unable to parse max size (" + size + ").  Ignoring." );
069            }
070            if ( currSize > maxSize ) {
071                maxSize = currSize;
072                sizeMax = size;
073            }
074        }
075    }
076    
077    public long calculateMaxUploadSizeToMaxOfList( List<String> sizes ) {
078        long maxSize = 0L;
079        for ( String size : sizes ) {
080            long currSize = convertSizeToBytes(size, 0L);
081            if ( currSize == 0L ) {
082                LOG.warn( "Unable to parse max size (" + size + ").  Ignoring." );
083            }
084            if ( currSize > maxSize ) {
085                maxSize = currSize;             
086            }
087        }
088        return maxSize;
089    }
090    
091}