/*
* Copyright (C) 2009, Google Inc.
* Copyright (C) 2008, Imran M Yousuf <imyousuf@smartitengineering.com>
* Copyright (C) 2007-2008, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.transport;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.MessageDigest;
import java.text.MessageFormat;
import java.util.zip.Deflater;
import org.eclipse.jgit.errors.TooLargeObjectInPackException;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.internal.storage.file.ObjectDirectoryPackParser;
import org.eclipse.jgit.internal.storage.file.PackFile;
import org.eclipse.jgit.junit.JGitTestUtil;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevBlob;
import org.eclipse.jgit.util.NB;
import org.eclipse.jgit.util.TemporaryBuffer;
import org.eclipse.jgit.util.io.UnionInputStream;
import org.junit.After;
import org.junit.Test;
/**
* Test indexing of git packs. A pack is read from a stream, copied
* to a new pack and an index is created. Then the packs are tested
* to make sure they contain the expected objects (well we don't test
* for all of them unless the packs are very small).
*/
public class PackParserTest extends RepositoryTestCase {
/**
* Test indexing one of the test packs in the egit repo. It has deltas.
*
* @throws IOException
*/
@Test
public void test1() throws IOException {
File packFile = JGitTestUtil.getTestResourceFile("pack-34be9032ac282b11fa9babdc2b2a93ca996c9c2f.pack");
final InputStream is = new FileInputStream(packFile);
try {
ObjectDirectoryPackParser p = (ObjectDirectoryPackParser) index(is);
p.parse(NullProgressMonitor.INSTANCE);
PackFile file = p.getPackFile();
assertTrue(file.hasObject(ObjectId.fromString("4b825dc642cb6eb9a060e54bf8d69288fbee4904")));
assertTrue(file.hasObject(ObjectId.fromString("540a36d136cf413e4b064c2b0e0a4db60f77feab")));
assertTrue(file.hasObject(ObjectId.fromString("5b6e7c66c276e7610d4a73c70ec1a1f7c1003259")));
assertTrue(file.hasObject(ObjectId.fromString("6ff87c4664981e4397625791c8ea3bbb5f2279a3")));
assertTrue(file.hasObject(ObjectId.fromString("82c6b885ff600be425b4ea96dee75dca255b69e7")));
assertTrue(file.hasObject(ObjectId.fromString("902d5476fa249b7abc9d84c611577a81381f0327")));
assertTrue(file.hasObject(ObjectId.fromString("aabf2ffaec9b497f0950352b3e582d73035c2035")));
assertTrue(file.hasObject(ObjectId.fromString("c59759f143fb1fe21c197981df75a7ee00290799")));
} finally {
is.close();
}
}
/**
* This is just another pack. It so happens that we have two convenient pack to
* test with in the repository.
*
* @throws IOException
*/
@Test
public void test2() throws IOException {
File packFile = JGitTestUtil.getTestResourceFile("pack-df2982f284bbabb6bdb59ee3fcc6eb0983e20371.pack");
final InputStream is = new FileInputStream(packFile);
try {
ObjectDirectoryPackParser p = (ObjectDirectoryPackParser) index(is);
p.parse(NullProgressMonitor.INSTANCE);
PackFile file = p.getPackFile();
assertTrue(file.hasObject(ObjectId.fromString("02ba32d3649e510002c21651936b7077aa75ffa9")));
assertTrue(file.hasObject(ObjectId.fromString("0966a434eb1a025db6b71485ab63a3bfbea520b6")));
assertTrue(file.hasObject(ObjectId.fromString("09efc7e59a839528ac7bda9fa020dc9101278680")));
assertTrue(file.hasObject(ObjectId.fromString("0a3d7772488b6b106fb62813c4d6d627918d9181")));
assertTrue(file.hasObject(ObjectId.fromString("1004d0d7ac26fbf63050a234c9b88a46075719d3")));
assertTrue(file.hasObject(ObjectId.fromString("10da5895682013006950e7da534b705252b03be6")));
assertTrue(file.hasObject(ObjectId.fromString("1203b03dc816ccbb67773f28b3c19318654b0bc8")));
assertTrue(file.hasObject(ObjectId.fromString("15fae9e651043de0fd1deef588aa3fbf5a7a41c6")));
assertTrue(file.hasObject(ObjectId.fromString("16f9ec009e5568c435f473ba3a1df732d49ce8c3")));
assertTrue(file.hasObject(ObjectId.fromString("1fd7d579fb6ae3fe942dc09c2c783443d04cf21e")));
assertTrue(file.hasObject(ObjectId.fromString("20a8ade77639491ea0bd667bf95de8abf3a434c8")));
assertTrue(file.hasObject(ObjectId.fromString("2675188fd86978d5bc4d7211698b2118ae3bf658")));
// and lots more...
} finally {
is.close();
}
}
@Test
public void testTinyThinPack() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
RevBlob a = d.blob("a");
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
a.copyRawTo(pack);
deflate(pack, new byte[] { 0x1, 0x1, 0x1, 'b' });
digest(pack);
PackParser p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setAllowThin(true);
p.parse(NullProgressMonitor.INSTANCE);
}
@Test
public void testPackWithDuplicateBlob() throws Exception {
final byte[] data = Constants.encode("0123456789abcdefg");
TestRepository<Repository> d = new TestRepository<Repository>(db);
assertTrue(db.hasObject(d.blob(data)));
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_BLOB) << 4 | 0x80 | 1);
pack.write(1);
deflate(pack, data);
digest(pack);
PackParser p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setAllowThin(false);
p.parse(NullProgressMonitor.INSTANCE);
}
@Test
public void testPackWithTrailingGarbage() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
RevBlob a = d.blob("a");
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
a.copyRawTo(pack);
deflate(pack, new byte[] { 0x1, 0x1, 0x1, 'b' });
digest(pack);
PackParser p = index(new UnionInputStream(
new ByteArrayInputStream(pack.toByteArray()),
new ByteArrayInputStream(new byte[] { 0x7e })));
p.setAllowThin(true);
p.setCheckEofAfterPackFooter(true);
try {
p.parse(NullProgressMonitor.INSTANCE);
fail("Pack with trailing garbage was accepted");
} catch (IOException err) {
assertEquals(
MessageFormat.format(JGitText.get().expectedEOFReceived, "\\x7e"),
err.getMessage());
}
}
@Test
public void testMaxObjectSizeFullBlob() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
final byte[] data = Constants.encode("0123456789");
d.blob(data);
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_BLOB) << 4 | 10);
deflate(pack, data);
digest(pack);
PackParser p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setMaxObjectSizeLimit(11);
p.parse(NullProgressMonitor.INSTANCE);
p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setMaxObjectSizeLimit(10);
p.parse(NullProgressMonitor.INSTANCE);
p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setMaxObjectSizeLimit(9);
try {
p.parse(NullProgressMonitor.INSTANCE);
fail("PackParser should have failed");
} catch (TooLargeObjectInPackException e) {
assertTrue(e.getMessage().contains("10")); // obj size
assertTrue(e.getMessage().contains("9")); // max obj size
}
}
@Test
public void testMaxObjectSizeDeltaBlock() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
RevBlob a = d.blob("a");
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_REF_DELTA) << 4 | 14);
a.copyRawTo(pack);
deflate(pack, new byte[] { 1, 11, 11, 'a', '0', '1', '2', '3', '4',
'5', '6', '7', '8', '9' });
digest(pack);
PackParser p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setAllowThin(true);
p.setMaxObjectSizeLimit(14);
p.parse(NullProgressMonitor.INSTANCE);
p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setAllowThin(true);
p.setMaxObjectSizeLimit(13);
try {
p.parse(NullProgressMonitor.INSTANCE);
fail("PackParser should have failed");
} catch (TooLargeObjectInPackException e) {
assertTrue(e.getMessage().contains("13")); // max obj size
assertFalse(e.getMessage().contains("14")); // no delta size
}
}
@Test
public void testMaxObjectSizeDeltaResultSize() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
RevBlob a = d.blob("0123456789");
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
a.copyRawTo(pack);
deflate(pack, new byte[] { 10, 11, 1, 'a' });
digest(pack);
PackParser p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setAllowThin(true);
p.setMaxObjectSizeLimit(11);
p.parse(NullProgressMonitor.INSTANCE);
p = index(new ByteArrayInputStream(pack.toByteArray()));
p.setAllowThin(true);
p.setMaxObjectSizeLimit(10);
try {
p.parse(NullProgressMonitor.INSTANCE);
fail("PackParser should have failed");
} catch (TooLargeObjectInPackException e) {
assertTrue(e.getMessage().contains("11")); // result obj size
assertTrue(e.getMessage().contains("10")); // max obj size
}
}
@Test
public void testNonMarkingInputStream() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
RevBlob a = d.blob("a");
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
a.copyRawTo(pack);
deflate(pack, new byte[] { 0x1, 0x1, 0x1, 'b' });
digest(pack);
InputStream in = new ByteArrayInputStream(pack.toByteArray()) {
@Override
public boolean markSupported() {
return false;
}
@Override
public void mark(int maxlength) {
fail("Mark should not be called");
}
};
PackParser p = index(in);
p.setAllowThin(true);
p.setCheckEofAfterPackFooter(false);
p.setExpectDataAfterPackFooter(true);
try {
p.parse(NullProgressMonitor.INSTANCE);
fail("PackParser should have failed");
} catch (IOException e) {
assertEquals(e.getMessage(),
JGitText.get().inputStreamMustSupportMark);
}
}
@Test
public void testDataAfterPackFooterSingleRead() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
RevBlob a = d.blob("a");
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(32*1024);
packHeader(pack, 1);
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
a.copyRawTo(pack);
deflate(pack, new byte[] { 0x1, 0x1, 0x1, 'b' });
digest(pack);
byte packData[] = pack.toByteArray();
byte streamData[] = new byte[packData.length + 1];
System.arraycopy(packData, 0, streamData, 0, packData.length);
streamData[packData.length] = 0x7e;
InputStream in = new ByteArrayInputStream(streamData);
PackParser p = index(in);
p.setAllowThin(true);
p.setCheckEofAfterPackFooter(false);
p.setExpectDataAfterPackFooter(true);
p.parse(NullProgressMonitor.INSTANCE);
assertEquals(0x7e, in.read());
}
@Test
public void testDataAfterPackFooterSplitObjectRead() throws Exception {
final byte[] data = Constants.encode("0123456789");
// Build a pack ~17k
int objects = 900;
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(32 * 1024);
packHeader(pack, objects);
for (int i = 0; i < objects; i++) {
pack.write((Constants.OBJ_BLOB) << 4 | 10);
deflate(pack, data);
}
digest(pack);
byte packData[] = pack.toByteArray();
byte streamData[] = new byte[packData.length + 1];
System.arraycopy(packData, 0, streamData, 0, packData.length);
streamData[packData.length] = 0x7e;
InputStream in = new ByteArrayInputStream(streamData);
PackParser p = index(in);
p.setAllowThin(true);
p.setCheckEofAfterPackFooter(false);
p.setExpectDataAfterPackFooter(true);
p.parse(NullProgressMonitor.INSTANCE);
assertEquals(0x7e, in.read());
}
@Test
public void testDataAfterPackFooterSplitHeaderRead() throws Exception {
TestRepository d = new TestRepository<Repository>(db);
final byte[] data = Constants.encode("a");
RevBlob b = d.blob(data);
int objects = 248;
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(32 * 1024);
packHeader(pack, objects + 1);
int offset = 13;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < offset; i++)
sb.append(i);
offset = sb.toString().length();
int lenByte = (Constants.OBJ_BLOB) << 4 | (offset & 0x0F);
offset >>= 4;
if (offset > 0)
lenByte |= 1 << 7;
pack.write(lenByte);
while (offset > 0) {
lenByte = offset & 0x7F;
offset >>= 6;
if (offset > 0)
lenByte |= 1 << 7;
pack.write(lenByte);
}
deflate(pack, Constants.encode(sb.toString()));
for (int i = 0; i < objects; i++) {
// The last pack header written falls across the 8192 byte boundary
// between [8189:8210]
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
b.copyRawTo(pack);
deflate(pack, new byte[] { 0x1, 0x1, 0x1, 'b' });
}
digest(pack);
byte packData[] = pack.toByteArray();
byte streamData[] = new byte[packData.length + 1];
System.arraycopy(packData, 0, streamData, 0, packData.length);
streamData[packData.length] = 0x7e;
InputStream in = new ByteArrayInputStream(streamData);
PackParser p = index(in);
p.setAllowThin(true);
p.setCheckEofAfterPackFooter(false);
p.setExpectDataAfterPackFooter(true);
p.parse(NullProgressMonitor.INSTANCE);
assertEquals(0x7e, in.read());
}
private static void packHeader(TemporaryBuffer.Heap tinyPack, int cnt)
throws IOException {
final byte[] hdr = new byte[8];
NB.encodeInt32(hdr, 0, 2);
NB.encodeInt32(hdr, 4, cnt);
tinyPack.write(Constants.PACK_SIGNATURE);
tinyPack.write(hdr, 0, 8);
}
private static void deflate(TemporaryBuffer.Heap tinyPack,
final byte[] content)
throws IOException {
final Deflater deflater = new Deflater();
final byte[] buf = new byte[128];
deflater.setInput(content, 0, content.length);
deflater.finish();
do {
final int n = deflater.deflate(buf, 0, buf.length);
if (n > 0)
tinyPack.write(buf, 0, n);
} while (!deflater.finished());
}
private static void digest(TemporaryBuffer.Heap buf) throws IOException {
MessageDigest md = Constants.newMessageDigest();
md.update(buf.toByteArray());
buf.write(md.digest());
}
private ObjectInserter inserter;
@After
public void release() {
if (inserter != null)
inserter.release();
}
private PackParser index(InputStream in) throws IOException {
if (inserter == null)
inserter = db.newObjectInserter();
return inserter.newPackParser(in);
}
}