[HTTPCLIENT-1381] NullPointerException during NTLM authentication using null workstation/domain

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.2.6, 4.3 Final
• Component/s: HttpClient (classic)
• Assignee: Unassigned
• Reporter: Ricardo Pereira
• Created: 03/Jul/13 19:04
• Updated: 20/Sep/16 19:31
• Resolved: 07/Jul/13 10:22

Description

Using NTCredentials with null workstation or null domain leads to a NullPointerException during the NTLM authentication.

The workaround is to use an empty String for both the workstation and domain.

Exception stack trace of an attempt to authenticate with null workstation:
Exception in thread "main" java.lang.NullPointerException
at org.apache.http.impl.auth.NTLMEngineImpl.stripDotSuffix(NTLMEngineImpl.java:186)
at org.apache.http.impl.auth.NTLMEngineImpl.convertHost(NTLMEngineImpl.java:194)
at org.apache.http.impl.auth.NTLMEngineImpl.access$14(NTLMEngineImpl.java:193)
at org.apache.http.impl.auth.NTLMEngineImpl$Type1Message.<init>(NTLMEngineImpl.java:970)
at org.apache.http.impl.auth.NTLMEngineImpl.getType1Message(NTLMEngineImpl.java:139)
at org.apache.http.impl.auth.NTLMEngineImpl.generateType1Msg(NTLMEngineImpl.java:1608)
at org.apache.http.impl.auth.NTLMScheme.authenticate(NTLMScheme.java:129)
at org.apache.http.impl.auth.AuthSchemeBase.authenticate(AuthSchemeBase.java:136)
at org.apache.http.impl.auth.HttpAuthenticator.doAuth(HttpAuthenticator.java:239)
at org.apache.http.impl.auth.HttpAuthenticator.generateAuthResponse(HttpAuthenticator.java:202)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:251)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:176)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:77)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:101)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:115)
at ClientNtlmProxyAuthentication.main(ClientNtlmProxyAuthentication.java:70)