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DirCacheCheckout and CanonicalTreeParser cooperate. CanonicalTreeParser can detect malformed, potentially malicious tree entries and sets a flag, while DirCacheCheckout refuses to work with such paths. Malicious tree entries are ".", "..", ".git" (case insensitive), any name containing '/' and (on Windows '\') and also (on Windows) any paths ending in a combination of '.' or space or containing a ':'. We also forbid all special names like "con" etc on Windows. Some of the test can execute on any platform by enabling partial platform emulation. A new runtime exception, InvalidPathException, is introduced. For backwards compatibility it extends InvalidArgumentException. Change-Id: I86199105814b63d4340e5de0e471d0da6b579ead Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>stable-2.0
Robin Rosenberg
13 years ago
committed by
Matthias Sohn
9 changed files with 635 additions and 8 deletions
@ -0,0 +1,420 @@ |
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/* |
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* Copyright (C) 2011, Robin Rosenberg <robin.rosenberg@dewire.com> |
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* and other copyright owners as documented in the project's IP log. |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the Eclipse Distribution License v1.0 which accompanies this |
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* distribution, is reproduced below, and is available at |
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* http://www.eclipse.org/org/documents/edl-v10.php
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* - Redistributions of source code must retain the above copyright notice, this |
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* list of conditions and the following disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* - Neither the name of the Eclipse Foundation, Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from this |
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* software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package org.eclipse.jgit.lib; |
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import static org.hamcrest.Matchers.startsWith; |
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import static org.junit.Assert.assertThat; |
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import static org.junit.Assert.fail; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.Arrays; |
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import org.eclipse.jgit.api.Git; |
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import org.eclipse.jgit.api.errors.CheckoutConflictException; |
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import org.eclipse.jgit.api.errors.InvalidRefNameException; |
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import org.eclipse.jgit.api.errors.JGitInternalException; |
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import org.eclipse.jgit.api.errors.RefAlreadyExistsException; |
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import org.eclipse.jgit.api.errors.RefNotFoundException; |
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import org.eclipse.jgit.dircache.InvalidPathException; |
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import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
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import org.eclipse.jgit.errors.MissingObjectException; |
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import org.eclipse.jgit.junit.MockSystemReader; |
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import org.eclipse.jgit.revwalk.RevWalk; |
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import org.eclipse.jgit.util.SystemReader; |
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import org.junit.Test; |
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public class DirCacheCheckoutMaliciousPathTest extends RepositoryTestCase { |
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protected ObjectId theHead; |
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protected ObjectId theMerge; |
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@Test |
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public void testMaliciousAbsolutePathIsOk() throws Exception { |
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testMaliciousPathGoodFirstCheckout("ok"); |
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} |
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@Test |
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public void testMaliciousAbsolutePathIsOkSecondCheckout() throws Exception { |
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testMaliciousPathGoodSecondCheckout("ok"); |
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} |
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@Test |
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public void testMaliciousAbsolutePathIsOkTwoLevels() throws Exception { |
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testMaliciousPathGoodSecondCheckout("a", "ok"); |
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} |
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@Test |
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public void testMaliciousAbsolutePath() throws Exception { |
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testMaliciousPathBadFirstCheckout("/tmp/x"); |
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} |
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@Test |
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public void testMaliciousAbsolutePathSecondCheckout() throws Exception { |
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testMaliciousPathBadSecondCheckout("/tmp/x"); |
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} |
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@Test |
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public void testMaliciousAbsolutePathTwoLevelsFirstBad() throws Exception { |
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testMaliciousPathBadFirstCheckout("/tmp/x", "y"); |
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} |
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@Test |
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public void testMaliciousAbsolutePathTwoLevelsSecondBad() throws Exception { |
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testMaliciousPathBadFirstCheckout("y", "/tmp/x"); |
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} |
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@Test |
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public void testMaliciousAbsoluteCurDrivePathWindows() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("\\somepath"); |
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} |
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@Test |
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public void testMaliciousAbsoluteCurDrivePathWindowsOnUnix() |
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throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathGoodFirstCheckout("\\somepath"); |
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} |
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@Test |
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public void testMaliciousAbsoluteUNCPathWindows1() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("\\\\somepath"); |
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} |
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@Test |
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public void testMaliciousAbsoluteUNCPathWindows1OnUnix() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathGoodFirstCheckout("\\\\somepath"); |
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} |
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@Test |
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public void testMaliciousAbsoluteUNCPathWindows2() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("\\/somepath"); |
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} |
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@Test |
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public void testMaliciousAbsoluteUNCPathWindows2OnUnix() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathBadFirstCheckout("\\/somepath"); |
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} |
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@Test |
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public void testMaliciousAbsoluteWindowsPath1() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("c:\\temp\\x"); |
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} |
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@Test |
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public void testMaliciousAbsoluteWindowsPath1OnUnix() throws Exception { |
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if (File.separatorChar == '\\') |
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return; // cannot emulate Unix on Windows for this test
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathGoodFirstCheckout("c:\\temp\\x"); |
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} |
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@Test |
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public void testMaliciousAbsoluteWindowsPath2() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setCurrentPlatform(); |
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testMaliciousPathBadFirstCheckout("c:/temp/x"); |
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} |
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@Test |
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public void testMaliciousGitPath1() throws Exception { |
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testMaliciousPathBadFirstCheckout(".git/konfig"); |
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} |
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@Test |
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public void testMaliciousGitPath2() throws Exception { |
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testMaliciousPathBadFirstCheckout(".git", "konfig"); |
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} |
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@Test |
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public void testMaliciousGitPath1Case() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); // or OS X
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testMaliciousPathBadFirstCheckout(".Git/konfig"); |
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} |
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@Test |
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public void testMaliciousGitPath2Case() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); // or OS X
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testMaliciousPathBadFirstCheckout(".gIt", "konfig"); |
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} |
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@Test |
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public void testMaliciousGitPath3Case() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); // or OS X
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testMaliciousPathBadFirstCheckout(".giT", "konfig"); |
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} |
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@Test |
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public void testMaliciousGitPathEndSpaceWindows() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout(".git ", "konfig"); |
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} |
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@Test |
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public void testMaliciousGitPathEndSpaceUnixOk() throws Exception { |
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if (File.separatorChar == '\\') |
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return; // cannot emulate Unix on Windows for this test
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathGoodFirstCheckout(".git ", "konfig"); |
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} |
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@Test |
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public void testMaliciousGitPathEndDotWindows1() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout(".git.", "konfig"); |
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} |
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@Test |
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public void testMaliciousGitPathEndDotWindows2() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout(".f."); |
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} |
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@Test |
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public void testMaliciousGitPathEndDotWindows3() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathGoodFirstCheckout(".f"); |
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} |
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@Test |
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public void testMaliciousGitPathEndDotUnixOk() throws Exception { |
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if (File.separatorChar == '\\') |
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return; // cannot emulate Unix on Windows for this test
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathGoodFirstCheckout(".git.", "konfig"); |
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} |
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@Test |
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public void testMaliciousPathDotDot() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setCurrentPlatform(); |
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testMaliciousPathBadFirstCheckout("..", "no"); |
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} |
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@Test |
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public void testMaliciousPathDot() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setCurrentPlatform(); |
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testMaliciousPathBadFirstCheckout(".", "no"); |
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} |
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@Test |
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public void testMaliciousPathEmpty() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setCurrentPlatform(); |
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testMaliciousPathBadFirstCheckout("", "no"); |
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} |
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@Test |
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public void testMaliciousWindowsADS() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("some:path"); |
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} |
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@Test |
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public void testMaliciousWindowsADSOnUnix() throws Exception { |
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if (File.separatorChar == '\\') |
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return; // cannot emulate Unix on Windows for this test
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((MockSystemReader) SystemReader.getInstance()).setUnix(); |
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testMaliciousPathGoodFirstCheckout("some:path"); |
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgCon() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("con"); |
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgConDotSuffix() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("con.txt"); |
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgLpt1() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("lpt1"); |
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgLpt1DotSuffix() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathBadFirstCheckout("lpt1.txt"); |
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgDotCon() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathGoodFirstCheckout(".con"); |
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgLpr() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathGoodFirstCheckout("lpt"); // good name
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} |
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@Test |
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public void testForbiddenNamesOnWindowsEgCon1() throws Exception { |
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((MockSystemReader) SystemReader.getInstance()).setWindows(); |
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testMaliciousPathGoodFirstCheckout("con1"); // good name
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} |
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@Test |
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public void testForbiddenWindowsNamesOnUnixEgCon() throws Exception { |
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if (File.separatorChar == '\\') |
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return; // cannot emulate Unix on Windows for this test
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testMaliciousPathGoodFirstCheckout("con"); |
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} |
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@Test |
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public void testForbiddenWindowsNamesOnUnixEgLpt1() throws Exception { |
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if (File.separatorChar == '\\') |
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return; // cannot emulate Unix on Windows for this test
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testMaliciousPathGoodFirstCheckout("lpt1"); |
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} |
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private void testMaliciousPathBadFirstCheckout(String... paths) |
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throws Exception { |
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testMaliciousPath(false, false, paths); |
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} |
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private void testMaliciousPathBadSecondCheckout(String... paths) throws Exception { |
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testMaliciousPath(false, true, paths); |
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} |
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private void testMaliciousPathGoodFirstCheckout(String... paths) |
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throws Exception { |
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testMaliciousPath(true, false, paths); |
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} |
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private void testMaliciousPathGoodSecondCheckout(String... paths) throws Exception { |
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testMaliciousPath(true, true, paths); |
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} |
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/** |
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* Create a bad tree and tries to check it out |
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* |
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* @param good |
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* true if we expect this to pass |
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* @param secondCheckout |
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* perform the actual test on the second checkout |
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* @param path |
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* to the blob, one or more levels |
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* @throws IOException |
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* @throws RefAlreadyExistsException |
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* @throws RefNotFoundException |
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* @throws InvalidRefNameException |
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* @throws MissingObjectException |
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* @throws IncorrectObjectTypeException |
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* @throws CheckoutConflictException |
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* @throws JGitInternalException |
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*/ |
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private void testMaliciousPath(boolean good, boolean secondCheckout, String... path) |
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throws IOException, RefAlreadyExistsException, |
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RefNotFoundException, InvalidRefNameException, |
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MissingObjectException, IncorrectObjectTypeException, |
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JGitInternalException, CheckoutConflictException { |
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Git git = new Git(db); |
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ObjectInserter newObjectInserter; |
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newObjectInserter = git.getRepository().newObjectInserter(); |
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ObjectId blobId = newObjectInserter.insert(Constants.OBJ_BLOB, |
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"data".getBytes()); |
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newObjectInserter = git.getRepository().newObjectInserter(); |
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FileMode mode = FileMode.REGULAR_FILE; |
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ObjectId insertId = blobId; |
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for (int i = path.length - 1; i >= 0; --i) { |
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TreeFormatter treeFormatter = new TreeFormatter(); |
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treeFormatter.append("goodpath", mode, insertId); |
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insertId = newObjectInserter.insert(treeFormatter); |
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mode = FileMode.TREE; |
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} |
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newObjectInserter = git.getRepository().newObjectInserter(); |
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CommitBuilder commitBuilder = new CommitBuilder(); |
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commitBuilder.setAuthor(author); |
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commitBuilder.setCommitter(committer); |
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commitBuilder.setMessage("foo#1"); |
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commitBuilder.setTreeId(insertId); |
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ObjectId firstCommitId = newObjectInserter.insert(commitBuilder); |
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newObjectInserter = git.getRepository().newObjectInserter(); |
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mode = FileMode.REGULAR_FILE; |
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insertId = blobId; |
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for (int i = path.length - 1; i >= 0; --i) { |
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TreeFormatter treeFormatter = new TreeFormatter(); |
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treeFormatter.append(path[i], mode, insertId); |
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insertId = newObjectInserter.insert(treeFormatter); |
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mode = FileMode.TREE; |
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} |
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// Create another commit
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commitBuilder = new CommitBuilder(); |
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commitBuilder.setAuthor(author); |
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commitBuilder.setCommitter(committer); |
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commitBuilder.setMessage("foo#2"); |
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commitBuilder.setTreeId(insertId); |
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commitBuilder.setParentId(firstCommitId); |
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ObjectId commitId = newObjectInserter.insert(commitBuilder); |
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RevWalk revWalk = new RevWalk(git.getRepository()); |
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if (!secondCheckout) |
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git.checkout().setStartPoint(revWalk.parseCommit(firstCommitId)) |
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.setName("refs/heads/master").setCreateBranch(true).call(); |
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try { |
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if (secondCheckout) { |
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git.checkout().setStartPoint(revWalk.parseCommit(commitId)) |
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.setName("refs/heads/master").setCreateBranch(true) |
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.call(); |
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} else { |
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git.branchCreate().setName("refs/heads/next") |
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.setStartPoint(commitId.name()).call(); |
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git.checkout().setName("refs/heads/next") |
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.call(); |
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} |
||||||
|
if (!good) |
||||||
|
fail("Checkout of Tree " + Arrays.asList(path) + " should fail"); |
||||||
|
} catch (InvalidPathException e) { |
||||||
|
if (good) |
||||||
|
throw e; |
||||||
|
assertThat(e.getMessage(), startsWith("Invalid path: ")); |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,63 @@ |
|||||||
|
/* |
||||||
|
* Copyright (C) 2011, Robin Rosenberg |
||||||
|
* 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.dircache; |
||||||
|
|
||||||
|
import java.text.MessageFormat; |
||||||
|
|
||||||
|
import org.eclipse.jgit.internal.JGitText; |
||||||
|
|
||||||
|
/** |
||||||
|
* Thrown when JGit detects and refuses to use an invalid path |
||||||
|
*/ |
||||||
|
public class InvalidPathException extends IllegalArgumentException { |
||||||
|
|
||||||
|
private static final long serialVersionUID = 1L; |
||||||
|
|
||||||
|
/** |
||||||
|
* @param path |
||||||
|
*/ |
||||||
|
public InvalidPathException(String path) { |
||||||
|
super(MessageFormat.format(JGitText.get().invalidPath, path)); |
||||||
|
} |
||||||
|
} |
Loading…
Reference in new issue