[HTTPCLIENT-936] NullPointerException in NegotiateScheme

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1 Alpha1
• Fix Version/s: 4.1 Alpha2
• Component/s: HttpClient (classic)
• Labels: keberos negotiate spnego
• Environment: JDK1.6
• Assignee: Unassigned
• Reporter: Francois Rigault
• Created: 06/May/10 12:55
• Updated: 20/Sep/16 19:31
• Resolved: 12/May/10 18:33

Description

• server is configured to allow client to authenticate with kerberos with principal foobar
• client, using httpclient with a registered authscheme SPNEGO set as a NegotiateSchemeFactory

• when the client authenticate with the (correct) principal foobar, it works !
• when the client authenticate with the (wrong) principal fooba, it fails with a NPE below.

Exception in thread "main" java.lang.NullPointerException
at org.apache.commons.codec.binary.Base64.encodeBase64(Base64.java:233)
at org.apache.commons.codec.binary.Base64.encode(Base64.java:521)
at org.apache.http.impl.auth.NegotiateScheme.authenticate(NegotiateScheme.java:240)
at org.apache.http.client.protocol.RequestTargetAuthentication.process(RequestTargetAuthentication.java:99)
at org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:108)
at org.apache.http.protocol.HttpRequestExecutor.preProcess(HttpRequestExecutor.java:167)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:460)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:689)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:624)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:602)