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/* ====================================================================
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.hmef;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import org.apache.poi.POIDataSamples;
import org.apache.poi.hmef.attribute.MAPIAttribute;
import org.apache.poi.hmef.attribute.MAPIRtfAttribute;
import org.apache.poi.hsmf.datatypes.MAPIProperty;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.StringUtil;
import org.junit.Test;
public final class TestCompressedRTF {
private static final POIDataSamples _samples = POIDataSamples.getHMEFInstance();
private static final String block1 = "{\\rtf1\\adeflang102";
private static final String block2 = block1 + "5\\ansi\\ansicpg1252";
/**
* Check that things are as we expected. If this fails,
* then decoding has no hope...
*/
@Test
public void testQuickBasics() throws Exception {
HMEFMessage msg;
try (InputStream is = _samples.openResourceAsStream("quick-winmail.dat")) {
msg = new HMEFMessage(is);
}
MAPIAttribute rtfAttr = msg.getMessageMAPIAttribute(MAPIProperty.RTF_COMPRESSED);
assertNotNull(rtfAttr);
assertTrue(rtfAttr instanceof MAPIRtfAttribute);
// Check the start of the compressed version
byte[] data = ((MAPIRtfAttribute) rtfAttr).getRawData();
assertEquals(5907, data.length);
// First 16 bytes is header stuff
// Check it has the length + compressed marker
assertEquals(5907 - 4, LittleEndian.getShort(data));
assertEquals(
"LZFu",
StringUtil.getFromCompressedUnicode(data, 8, 4)
);
// Now Look at the code
assertEquals((byte) 0x07, data[16 + 0]); // Flag: cccUUUUU
assertEquals((byte) 0x00, data[16 + 1]); // c1a: offset 0 / 0x000
assertEquals((byte) 0x06, data[16 + 2]); // c1b: length 6+2 -> {\rtf1\a
assertEquals((byte) 0x01, data[16 + 3]); // c2a: offset 16 / 0x010
assertEquals((byte) 0x01, data[16 + 4]); // c2b: length 1+2 -> def
assertEquals((byte) 0x0b, data[16 + 5]); // c3a: offset 182 / 0xb6
assertEquals((byte) 0x60, data[16 + 6]); // c3b: length 0+2 -> la
assertEquals((byte) 0x6e, data[16 + 7]); // n
assertEquals((byte) 0x67, data[16 + 8]); // g
assertEquals((byte) 0x31, data[16 + 9]); // 1
assertEquals((byte) 0x30, data[16 + 10]); // 0
assertEquals((byte) 0x32, data[16 + 11]); // 2
assertEquals((byte) 0x66, data[16 + 12]); // Flag: UccUUccU
assertEquals((byte) 0x35, data[16 + 13]); // 5
assertEquals((byte) 0x00, data[16 + 14]); // c2a: offset 6 / 0x006
assertEquals((byte) 0x64, data[16 + 15]); // c2b: length 4+2 -> \ansi\a
assertEquals((byte) 0x00, data[16 + 16]); // c3a: offset 7 / 0x007
assertEquals((byte) 0x72, data[16 + 17]); // c3b: length 2+2 -> nsi
assertEquals((byte) 0x63, data[16 + 18]); // c
assertEquals((byte) 0x70, data[16 + 19]); // p
assertEquals((byte) 0x0d, data[16 + 20]); // c6a: offset 221 / 0x0dd
assertEquals((byte) 0xd0, data[16 + 21]); // c6b: length 0+2 -> g1
assertEquals((byte) 0x0e, data[16 + 22]); // c7a: offset 224 / 0x0e0
assertEquals((byte) 0x00, data[16 + 23]); // c7b: length 0+2 -> 25
assertEquals((byte) 0x32, data[16 + 24]); // 2
}
/**
* Check that we can decode the first 8 codes
* (1 flag byte + 8 codes)
*/
@Test
public void testFirstBlock() throws Exception {
HMEFMessage msg;
try (InputStream is = _samples.openResourceAsStream("quick-winmail.dat")) {
msg = new HMEFMessage(is);
}
MAPIAttribute attr = msg.getMessageMAPIAttribute(MAPIProperty.RTF_COMPRESSED);
assertNotNull(attr);
MAPIRtfAttribute rtfAttr = (MAPIRtfAttribute) attr;
// Truncate to header + flag + data for flag
byte[] data = new byte[16 + 12];
System.arraycopy(rtfAttr.getRawData(), 0, data, 0, data.length);
// Decompress it
CompressedRTF comp = new CompressedRTF();
byte[] decomp = comp.decompress(new ByteArrayInputStream(data));
String decompStr = new String(decomp, "ASCII");
// Test
assertEquals(block1.length(), decomp.length);
assertEquals(block1, decompStr);
}
/**
* Check that we can decode the first 16 codes
* (flag + 8 codes, flag + 8 codes)
*/
@Test
public void testFirstTwoBlocks() throws Exception {
HMEFMessage msg;
try (InputStream is = _samples.openResourceAsStream("quick-winmail.dat")) {
msg = new HMEFMessage(is);
}
MAPIAttribute attr = msg.getMessageMAPIAttribute(MAPIProperty.RTF_COMPRESSED);
assertNotNull(attr);
MAPIRtfAttribute rtfAttr = (MAPIRtfAttribute) attr;
// Truncate to header + flag + data for flag + flag + data
byte[] data = new byte[16 + 12 + 13];
System.arraycopy(rtfAttr.getRawData(), 0, data, 0, data.length);
// Decompress it
CompressedRTF comp = new CompressedRTF();
byte[] decomp = comp.decompress(new ByteArrayInputStream(data));
String decompStr = new String(decomp, "ASCII");
// Test
assertEquals(block2.length(), decomp.length);
assertEquals(block2, decompStr);
}
/**
* Check that we can correctly decode the whole file
* TODO Fix what looks like a padding issue
*/
@Test
public void testFull() throws Exception {
final HMEFMessage msg;
try (InputStream is = _samples.openResourceAsStream("quick-winmail.dat")) {
msg = new HMEFMessage(is);
}
MAPIAttribute attr = msg.getMessageMAPIAttribute(MAPIProperty.RTF_COMPRESSED);
assertNotNull(attr);
MAPIRtfAttribute rtfAttr = (MAPIRtfAttribute) attr;
final byte[] expected;
try (InputStream stream = _samples.openResourceAsStream("quick-contents/message.rtf")) {
expected = IOUtils.toByteArray(stream);
}
CompressedRTF comp = new CompressedRTF();
byte[] data = rtfAttr.getRawData();
byte[] decomp = comp.decompress(new ByteArrayInputStream(data));
// Check the length was as expected
assertEquals(data.length, comp.getCompressedSize() + 16);
assertEquals(expected.length, comp.getDeCompressedSize());
// Will have been padded though
assertEquals(expected.length + 2, decomp.length);
byte[] tmp = new byte[expected.length];
System.arraycopy(decomp, 0, tmp, 0, tmp.length);
decomp = tmp;
// By byte
assertEquals(expected.length, decomp.length);
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], decomp[i]);
}
// By String
String expString = new String(expected, "ASCII");
String decompStr = rtfAttr.getDataString();
assertEquals(expString.length(), decompStr.length());
assertEquals(expString, decompStr);
}
}
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