DO NOT REPLY [Bug 16144] New: - NullPointerException in JDBCRealm when password is null

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=16144

NullPointerException in JDBCRealm when password is null

           Summary: NullPointerException in JDBCRealm when password is null
           Product: Tomcat 4
           Version: 4.1.18
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Minor
          Priority: Other
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: jmwhite@interval.com


My setup:

Tomcat 4.1.18 running behind Apache 2.0.40.8 (RedHat 8.0).  I use SSL on Apache
and use CoyoteConnector and mod_jk to connect httpd and tomcat.  I use basic
authentication on tomcat. I use Oracle 9.2 for my authentication db.

This setup works great, except I found one scenario where the JDBCRealm causes a
null pointer exception during Basic Authentication:

The user's password is "password" in the database.  If the user leaves the
password empty in the Basic Authentication Dialog (in IE or Netscape), nothing
is returned and the following exception occurs:


Ajp13Processor[8090][1] process: invoke
java.lang.NullPointerException
    at org.apache.catalina.realm.JDBCRealm.authenticate(JDBCRealm.java:447)
    at org.apache.catalina.realm.JDBCRealm.authenticate(JDBCRealm.java:394)
    at
org.apache.catalina.authenticator.BasicAuthenticator.authenticate(BasicAuthenticator.java:161)
    at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
    at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
    at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
    at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
    at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509)
    at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
    at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:458)
    at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:551)
    at java.lang.Thread.run(Thread.java:536)

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