[DIRSERVER-1636] Obtaining Kerberos tickets via TCP leads to endless loop

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.0.0-M2
• Assignee: Emmanuel Lécharny
• Reporter: Stefan Seelmann
• Created: 24/Jul/11 17:09
• Updated: 25/Jul/11 20:00
• Resolved: 24/Jul/11 22:16

Description

When obtaining Kerberos tickets via TCP the server runs into an endless loop. The while loop in org.apache.directory.server.kerberos.protocol.KerberosDecoder.decode() never terminates.

To reproduce I added a new test class "KerberosTcpITest" in kerberos-test module, just remove the @Ignore.

Here is the stack:
Thread [NioProcessor-5] (Suspended (breakpoint at line 106 in KerberosDecoder))
KerberosDecoder.decode(IoSession, IoBuffer, ProtocolDecoderOutput) line: 106
ProtocolCodecFilter.messageReceived(IoFilter$NextFilter, IoSession, Object) line: 241
DefaultIoFilterChain.callNextMessageReceived(IoFilterChain$Entry, IoSession, Object) line: 434
DefaultIoFilterChain.access$1200(DefaultIoFilterChain, IoFilterChain$Entry, IoSession, Object) line: 46
DefaultIoFilterChain$EntryImpl$1.messageReceived(IoSession, Object) line: 796
DefaultIoFilterChain$HeadFilter(IoFilterAdapter).messageReceived(IoFilter$NextFilter, IoSession, Object) line: 119
DefaultIoFilterChain.callNextMessageReceived(IoFilterChain$Entry, IoSession, Object) line: 434
DefaultIoFilterChain.fireMessageReceived(Object) line: 426
NioProcessor(AbstractPollingIoProcessor<S>).read(S) line: 715
NioProcessor(AbstractPollingIoProcessor<S>).process(S) line: 668
NioProcessor(AbstractPollingIoProcessor<S>).process() line: 657
AbstractPollingIoProcessor<S>.access$600(AbstractPollingIoProcessor) line: 68
AbstractPollingIoProcessor$Processor.run() line: 1141
NamePreservingRunnable.run() line: 64
ThreadPoolExecutor.runWorker(ThreadPoolExecutor$Worker) line: 1110
ThreadPoolExecutor$Worker.run() line: 603
Thread.run() line: 679