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: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
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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