Work around smart HTTP bugs in C Git

I have unfortunately introduced a few bugs in the native Git client
over the years. 1.7.5 is unable to send chunked requests correctly,
resulting in corrupt data at the server. Ban this client whenever
it uses chunked encoding with an error message.

Prior to some more recent versions, git push over HTTP failed to
report status information and error messages due to a race within
the client and its helper process. Check for these bad versions and
send errors as messages before the status report, enabling users
to see the failures on their terminal.

Change-Id: Ic62d6591cbd851d21dbb3e9b023d655eaecb0624

1 files changed, 85 insertions, 0 deletions

diff --git a/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/server/ClientVersionUtilTest.java b/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/server/ClientVersionUtilTest.java
new file mode 100644
index 0000000000..a8c604ce65
--- /dev/null
+++ b/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/server/ClientVersionUtilTest.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2012, Google Inc.
+ * 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.http.server;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.eclipse.jgit.http.server.ClientVersionUtil.hasPushStatusBug;
+import static org.eclipse.jgit.http.server.ClientVersionUtil.invalidVersion;
+import static org.eclipse.jgit.http.server.ClientVersionUtil.parseVersion;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ClientVersionUtilTest {
+	@Test
+	public void testParse() {
+		assertEquals("1.6.5", parseVersion("git/1.6.6-rc0"));
+		assertEquals("1.6.6", parseVersion("git/1.6.6"));
+		assertEquals("1.7.5", parseVersion("git/1.7.5.GIT"));
+		assertEquals("1.7.6.1", parseVersion("git/1.7.6.1.45.gbe0cc"));
+
+		assertEquals("1.5.4.3", parseVersion("git/1.5.4.3,gzip(proxy)"));
+		assertEquals("1.7.0.2", parseVersion("git/1.7.0.2.msysgit.0.14.g956d7,gzip"));
+		assertEquals("1.7.10.2", parseVersion("git/1.7.10.2 (Apple Git-33)"));
+
+		assertEquals(ClientVersionUtil.toString(invalidVersion()), parseVersion("foo"));
+	}
+
+	@Test
+	public void testPushStatusBug() {
+		assertTrue(hasPushStatusBug(parseVersion("git/1.6.6")));
+		assertTrue(hasPushStatusBug(parseVersion("git/1.6.6.1")));
+		assertTrue(hasPushStatusBug(parseVersion("git/1.7.9")));
+
+		assertFalse(hasPushStatusBug(parseVersion("git/1.7.8.6")));
+		assertFalse(hasPushStatusBug(parseVersion("git/1.7.9.1")));
+		assertFalse(hasPushStatusBug(parseVersion("git/1.7.9.2")));
+		assertFalse(hasPushStatusBug(parseVersion("git/1.7.10")));
+	}
+
+	private static void assertEquals(String exp, int[] act) {
+		Assert.assertEquals(exp, ClientVersionUtil.toString(act));
+	}
+}