Fix bad test fix from 0bff481 "Limit receive commands"

In 0bff481d45db74db81a3b1b86f7401443a60d970 to accurately use the two
limits it was necessary to move the LimitedInputStream out of the
PacketLineIn and further down to the PackParser. Unfortuantely this
didn't survive review, as a buggy test failed and the "fix" was to
drop this part of the code.

The maxPackSizeLimit should apply to the pack stream, not the pkt-line
framing used to send commands to control the ReceivePack instance. The
commands are controlled using a different limit. The failing test allowed
too many bytes in the pack and was only failing because it was including
the command framing. The correct fix for the test was simply to drop the
limit lower, to more closely match the actual pack size.

Change-Id: I47d3885b9d7d527e153df7ac9c62fc2865ceecf4

2 files changed, 15 insertions, 10 deletions

diff --git a/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/test/GitServletResponseTests.java b/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/test/GitServletResponseTests.java
index 1c953084db..de7891c445 100644
--- a/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/test/GitServletResponseTests.java
+++ b/org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/test/GitServletResponseTests.java
@@ -269,7 +269,7 @@ public class GitServletResponseTests extends HttpTestCase {
 		Transport t;
 
 		// this maxPackSize leads to an unPackError
-		maxPackSize = 400;
+		maxPackSize = 100;
 		// this PostReceiveHook when called after an unsuccesfull unpack will
 		// lead to an IllegalStateException
 		postHook = new PostReceiveHook() {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java
index 080fbd6437..a7e72f1dea 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java
@@ -1058,14 +1058,6 @@ public abstract class BaseReceivePack {
 			rawOut = o;
 		}
 
-		if (maxPackSizeLimit >= 0)
-			rawIn = new LimitedInputStream(rawIn, maxPackSizeLimit) {
-				@Override
-				protected void limitExceeded() throws TooLargePackException {
-					throw new TooLargePackException(limit);
-				}
-			};
-
 		pckIn = new PacketLineIn(rawIn);
 		pckOut = new PacketLineOut(rawOut);
 		pckOut.setFlushOnEnd(false);
@@ -1369,7 +1361,7 @@ public abstract class BaseReceivePack {
 			if (getRefLogIdent() != null)
 				lockMsg += " from " + getRefLogIdent().toExternalString(); //$NON-NLS-1$
 
-			parser = ins.newPackParser(rawIn);
+			parser = ins.newPackParser(packInputStream());
 			parser.setAllowThin(true);
 			parser.setNeedNewObjectIds(checkReferencedIsReachable);
 			parser.setNeedBaseObjectIds(checkReferencedIsReachable);
@@ -1389,6 +1381,19 @@ public abstract class BaseReceivePack {
 			timeoutIn.setTimeout(timeout * 1000);
 	}
 
+	private InputStream packInputStream() {
+		InputStream packIn = rawIn;
+		if (maxPackSizeLimit >= 0) {
+			packIn = new LimitedInputStream(packIn, maxPackSizeLimit) {
+				@Override
+				protected void limitExceeded() throws TooLargePackException {
+					throw new TooLargePackException(limit);
+				}
+			};
+		}
+		return packIn;
+	}
+
 	private boolean needCheckConnectivity() {
 		return isCheckReceivedObjects()
 				|| isCheckReferencedObjectsAreReachable()