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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 45823] New: AccessLogValve doesn't correctly handles combined log format (with patch)
Date Wed, 17 Sep 2008 09:20:06 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=45823

           Summary: AccessLogValve doesn't correctly handles combined log
                    format (with patch)
           Product: Tomcat 6
           Version: 6.0.16
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: per.landberg@polago.se


Created an attachment (id=22595)
 --> (https://issues.apache.org/bugzilla/attachment.cgi?id=22595)
Patch that corrects this bug

When configuring the AccessLogValve valve to use the combined log format and
either referer or user-agent fields are unavailable in the request, the
corresponding log entry fields will contain "(null)" instead of "-". This
behaviour breaks access log analyzers like AWStats and I believe it's also a
violation of the log spec.

Included is a patch that I believe will correct the problem. The patch make
sure that any non-existing header will be logged as '-' instead of trying to
log a null pointer.

I stumbled on this problem when upgrading from Tomcat 5.5 to 6.0.16 using
Debian etch and JDK 6. Tomcat 5.5 didn't suffer from this issue.

I haven't yet tried Tomcat 6.0.18 but the AccessLogValve.java file seems to be
unchanged between the two releases so I suspect the problem still exists.


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