| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| package org.apache.poi.poifs.dev; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.nio.ByteBuffer; |
| import java.util.Iterator; |
| |
| import org.apache.poi.poifs.common.POIFSConstants; |
| import org.apache.poi.poifs.filesystem.DirectoryEntry; |
| import org.apache.poi.poifs.filesystem.DocumentInputStream; |
| import org.apache.poi.poifs.filesystem.DocumentNode; |
| import org.apache.poi.poifs.filesystem.Entry; |
| import org.apache.poi.poifs.filesystem.POIFSFileSystem; |
| import org.apache.poi.poifs.filesystem.POIFSStream; |
| import org.apache.poi.poifs.property.PropertyTable; |
| import org.apache.poi.poifs.storage.HeaderBlock; |
| import org.apache.poi.util.IOUtils; |
| |
| /** |
| * Dump internal structure of a OLE2 file into file system |
| */ |
| public final class POIFSDump { |
| //arbitrarily selected; may need to increase |
| private static final int MAX_RECORD_LENGTH = 100_000; |
| |
| private POIFSDump() {} |
| |
| public static void main(String[] args) throws IOException { |
| if (args.length == 0) { |
| System.err.println("Must specify at least one file to dump"); |
| System.exit(1); |
| } |
| |
| boolean dumpProps = false, dumpMini = false; |
| for (String filename : args) { |
| if (filename.equalsIgnoreCase("-dumprops") || |
| filename.equalsIgnoreCase("-dump-props") || |
| filename.equalsIgnoreCase("-dump-properties")) { |
| dumpProps = true; |
| continue; |
| } |
| if (filename.equalsIgnoreCase("-dumpmini") || |
| filename.equalsIgnoreCase("-dump-mini") || |
| filename.equalsIgnoreCase("-dump-ministream") || |
| filename.equalsIgnoreCase("-dump-mini-stream")) { |
| dumpMini = true; |
| continue; |
| } |
| |
| System.out.println("Dumping " + filename); |
| try (FileInputStream is = new FileInputStream(filename); |
| POIFSFileSystem fs = new POIFSFileSystem(is)) { |
| DirectoryEntry root = fs.getRoot(); |
| String filenameWithoutPath = new File(filename).getName(); |
| File dumpDir = new File(filenameWithoutPath + "_dump"); |
| File file = new File(dumpDir, root.getName()); |
| if (!file.exists() && !file.mkdirs()) { |
| throw new IOException("Could not create directory " + file); |
| } |
| |
| dump(root, file); |
| |
| if (dumpProps) { |
| HeaderBlock header = fs.getHeaderBlock(); |
| dump(fs, header.getPropertyStart(), "properties", file); |
| } |
| if (dumpMini) { |
| PropertyTable props = fs.getPropertyTable(); |
| int startBlock = props.getRoot().getStartBlock(); |
| if (startBlock == POIFSConstants.END_OF_CHAIN) { |
| System.err.println("No Mini Stream in file"); |
| } else { |
| dump(fs, startBlock, "mini-stream", file); |
| } |
| } |
| } |
| } |
| } |
| |
| public static void dump(DirectoryEntry root, File parent) throws IOException { |
| for(Iterator<Entry> it = root.getEntries(); it.hasNext();){ |
| Entry entry = it.next(); |
| if(entry instanceof DocumentNode){ |
| DocumentNode node = (DocumentNode)entry; |
| DocumentInputStream is = new DocumentInputStream(node); |
| byte[] bytes = IOUtils.toByteArray(is); |
| is.close(); |
| |
| try (OutputStream out = new FileOutputStream(new File(parent, node.getName().trim()))) { |
| out.write(bytes); |
| } |
| } else if (entry instanceof DirectoryEntry){ |
| DirectoryEntry dir = (DirectoryEntry)entry; |
| File file = new File(parent, entry.getName()); |
| if(!file.exists() && !file.mkdirs()) { |
| throw new IOException("Could not create directory " + file); |
| } |
| dump(dir, file); |
| } else { |
| System.err.println("Skipping unsupported POIFS entry: " + entry); |
| } |
| } |
| } |
| public static void dump(POIFSFileSystem fs, int startBlock, String name, File parent) throws IOException { |
| File file = new File(parent, name); |
| try (FileOutputStream out = new FileOutputStream(file)) { |
| POIFSStream stream = new POIFSStream(fs, startBlock); |
| |
| byte[] b = IOUtils.safelyAllocate(fs.getBigBlockSize(), MAX_RECORD_LENGTH); |
| for (ByteBuffer bb : stream) { |
| int len = bb.remaining(); |
| bb.get(b); |
| out.write(b, 0, len); |
| } |
| } |
| } |
| } |