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/*
* 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 others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.transport;
import static org.junit.Assert.assertEquals;
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.HashMap;
import java.util.List;
import java.util.Map;
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.Pack;
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");
try (InputStream is = new FileInputStream(packFile)) {
ObjectDirectoryPackParser p = (ObjectDirectoryPackParser) index(is);
p.parse(NullProgressMonitor.INSTANCE);
Pack pack = p.getPack();
assertTrue(pack.hasObject(ObjectId.fromString("4b825dc642cb6eb9a060e54bf8d69288fbee4904")));
assertTrue(pack.hasObject(ObjectId.fromString("540a36d136cf413e4b064c2b0e0a4db60f77feab")));
assertTrue(pack.hasObject(ObjectId.fromString("5b6e7c66c276e7610d4a73c70ec1a1f7c1003259")));
assertTrue(pack.hasObject(ObjectId.fromString("6ff87c4664981e4397625791c8ea3bbb5f2279a3")));
assertTrue(pack.hasObject(ObjectId.fromString("82c6b885ff600be425b4ea96dee75dca255b69e7")));
assertTrue(pack.hasObject(ObjectId.fromString("902d5476fa249b7abc9d84c611577a81381f0327")));
assertTrue(pack.hasObject(ObjectId.fromString("aabf2ffaec9b497f0950352b3e582d73035c2035")));
assertTrue(pack.hasObject(ObjectId.fromString("c59759f143fb1fe21c197981df75a7ee00290799")));
}
}
@Test
public void testParsePack1ReadsObjectSizes() throws IOException {
File packFile = JGitTestUtil.getTestResourceFile(
"pack-34be9032ac282b11fa9babdc2b2a93ca996c9c2f.pack");
// Sizes from git cat-file -s after unpacking in a local repo
Map<String, Long> expected = new HashMap<>();
// Commits
expected.put("540a36d136cf413e4b064c2b0e0a4db60f77feab",
Long.valueOf(191));
expected.put("c59759f143fb1fe21c197981df75a7ee00290799",
Long.valueOf(240));
expected.put("82c6b885ff600be425b4ea96dee75dca255b69e7",
Long.valueOf(245));
// Trees
expected.put("4b825dc642cb6eb9a060e54bf8d69288fbee4904",
Long.valueOf(0)); // empty
expected.put("902d5476fa249b7abc9d84c611577a81381f0327",
Long.valueOf(35));
expected.put("aabf2ffaec9b497f0950352b3e582d73035c2035",
Long.valueOf(35));
// Blobs
expected.put("6ff87c4664981e4397625791c8ea3bbb5f2279a3",
Long.valueOf(18787));
// Deltas
expected.put("5b6e7c66c276e7610d4a73c70ec1a1f7c1003259",
Long.valueOf(18009)); // delta-oid blob
try (InputStream is = new FileInputStream(packFile)) {
ObjectDirectoryPackParser p = (ObjectDirectoryPackParser) index(is);
p.parse(NullProgressMonitor.INSTANCE);
List<PackedObjectInfo> parsedObjects = p.getSortedObjectList(null);
for (PackedObjectInfo objInfo: parsedObjects) {
assertEquals(objInfo.getName(), objInfo.getFullSize(),
expected.get(objInfo.getName()).longValue());
}
}
}
/**
* 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");
try (InputStream is = new FileInputStream(packFile)) {
ObjectDirectoryPackParser p = (ObjectDirectoryPackParser) index(is);
p.parse(NullProgressMonitor.INSTANCE);
Pack pack = p.getPack();
assertTrue(pack.hasObject(ObjectId.fromString("02ba32d3649e510002c21651936b7077aa75ffa9")));
assertTrue(pack.hasObject(ObjectId.fromString("0966a434eb1a025db6b71485ab63a3bfbea520b6")));
assertTrue(pack.hasObject(ObjectId.fromString("09efc7e59a839528ac7bda9fa020dc9101278680")));
assertTrue(pack.hasObject(ObjectId.fromString("0a3d7772488b6b106fb62813c4d6d627918d9181")));
assertTrue(pack.hasObject(ObjectId.fromString("1004d0d7ac26fbf63050a234c9b88a46075719d3")));
assertTrue(pack.hasObject(ObjectId.fromString("10da5895682013006950e7da534b705252b03be6")));
assertTrue(pack.hasObject(ObjectId.fromString("1203b03dc816ccbb67773f28b3c19318654b0bc8")));
assertTrue(pack.hasObject(ObjectId.fromString("15fae9e651043de0fd1deef588aa3fbf5a7a41c6")));
assertTrue(pack.hasObject(ObjectId.fromString("16f9ec009e5568c435f473ba3a1df732d49ce8c3")));
assertTrue(pack.hasObject(ObjectId.fromString("1fd7d579fb6ae3fe942dc09c2c783443d04cf21e")));
assertTrue(pack.hasObject(ObjectId.fromString("20a8ade77639491ea0bd667bf95de8abf3a434c8")));
assertTrue(pack.hasObject(ObjectId.fromString("2675188fd86978d5bc4d7211698b2118ae3bf658")));
// and lots more...
}
}
@Test
public void testParsePack2ReadsObjectSizes() throws IOException {
File packFile = JGitTestUtil.getTestResourceFile(
"pack-df2982f284bbabb6bdb59ee3fcc6eb0983e20371.pack");
Map<String, Long> expected = new HashMap<>();
// Deltified commit
expected.put("d0114ab8ac326bab30e3a657a0397578c5a1af88",
Long.valueOf(222));
// Delta of delta of commit
expected.put("f73b95671f326616d66b2afb3bdfcdbbce110b44",
Long.valueOf(221));
// Deltified tree
expected.put("be9b45333b66013bde1c7314efc50fabd9b39c6d",
Long.valueOf(94));
try (InputStream is = new FileInputStream(packFile)) {
ObjectDirectoryPackParser p = (ObjectDirectoryPackParser) index(is);
p.parse(NullProgressMonitor.INSTANCE);
List<PackedObjectInfo> parsedObjects = p.getSortedObjectList(null);
// Check only the interesting objects
int assertedObjs = 0;
for (PackedObjectInfo objInfo : parsedObjects) {
if (!expected.containsKey(objInfo.getName())) {
continue;
}
assertEquals(objInfo.getName(), objInfo.getFullSize(),
expected.get(objInfo.getName()).longValue());
assertedObjs += 1;
}
assertEquals(assertedObjs, expected.size());
}
}
@Test
public void testTinyThinPack() throws Exception {
RevBlob a;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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");
try (TestRepository<Repository> d = new TestRepository<>(db)) {
db.incrementOpen();
assertTrue(db.getObjectDatabase().has(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 testParseOfsDeltaFullSize() throws Exception {
final byte[] data = Constants.encode("0123456789");
try (TestRepository<Repository> d = new TestRepository<>(db)) {
db.incrementOpen();
assertTrue(db.getObjectDatabase().has(d.blob(data)));
}
TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 2);
pack.write((Constants.OBJ_BLOB) << 4 | 10); // offset 12
deflate(pack, data);
pack.write((Constants.OBJ_OFS_DELTA) << 4 | 4); // offset 31
pack.write(19);
deflate(pack, new byte[] { 0xA, 0xB, 0x1, 'b' });
digest(pack);
PackParser p = index(new ByteArrayInputStream(pack.toByteArray()));
p.parse(NullProgressMonitor.INSTANCE);
List<PackedObjectInfo> sortedObjectList = p.getSortedObjectList(null);
assertEquals(sortedObjectList.size(), 2);
// Deltified comes first because they are sorted by SHA1
PackedObjectInfo deltifiedObj = sortedObjectList.get(0);
assertEquals(deltifiedObj.getName(),
"16646543f87fb53e30b032eec7dfc88f2e717966");
assertEquals(deltifiedObj.getOffset(), 31);
assertEquals(deltifiedObj.getType(), Constants.OBJ_BLOB);
assertEquals(deltifiedObj.getFullSize(), 11);
PackedObjectInfo baseObj = sortedObjectList.get(1);
assertEquals(baseObj.getName(),
"ad471007bd7f5983d273b9584e5629230150fd54");
assertEquals(baseObj.getOffset(), 12);
assertEquals(baseObj.getType(), Constants.OBJ_BLOB);
assertEquals(baseObj.getFullSize(), 10);
}
@Test
public void testPackWithTrailingGarbage() throws Exception {
RevBlob a;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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 {
final byte[] data = Constants.encode("0123456789");
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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 {
RevBlob a;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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
assertTrue(e.getMessage().contains("14")); // delta size
}
}
@Test
public void testMaxObjectSizeDeltaResultSize() throws Exception {
RevBlob a;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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 {
RevBlob a;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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 {
RevBlob a;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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 {
final byte[] data = Constants.encode("a");
RevBlob b;
try (TestRepository d = new TestRepository<Repository>(db)) {
db.incrementOpen();
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.close();
}
}
private PackParser index(InputStream in) throws IOException {
if (inserter == null)
inserter = db.newObjectInserter();
return inserter.newPackParser(in);
}
}
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