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Posted to dev@tomcat.apache.org by bu...@apache.org on 2019/07/24 19:11:58 UTC
[Bug 63608] New: Negative pattern match in rewrite rule is not as
documented
https://bz.apache.org/bugzilla/show_bug.cgi?id=63608
Bug ID: 63608
Summary: Negative pattern match in rewrite rule is not as
documented
Product: Tomcat 8
Version: 8.5.x-trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: michaelc@hotmail.com
Target Milestone: ----
The mention of using "NOT character ('!')" in rule patterns as negative match
no longer matches implementation:
https://tomcat.apache.org/tomcat-8.5-doc/rewrite.html
In the rules, the NOT character ('!') is also available as a possible
pattern prefix. This enables you to negate a pattern; to say, for instance:
``if the current URL does NOT match this pattern''. This can be used for
exceptional cases, where it is easier to match the negative pattern, or as a
last default rule.
The current implementation uses java.util.regex, which does not support a
simple ! prefix as a negative match regex:
https://docs.oracle.com/javase/8/docs/api/index.html?java/util/regex/Pattern.html
Instead, you need to use zero-width lookahead like this (to match any URL but
/portal/api/.*)
^(?!/portal/api/.*).*$
This inaccurate documentation exist in all versions, at least since 8.0.x. For
backward compatibility to the above documentation, RewriteRule needs the
`positive` variable and logic found in the RewriteCond class.
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[Bug 63608] Negative pattern match in rewrite rule is not as
documented
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63608
Mark Thomas <ma...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Mark Thomas <ma...@apache.org> ---
Thanks for the report.
Fixed in:
- master for 9.0.23 onwards
- 8.5.x for 8.5.44 onwards
The RewriteValve is not present in 7.0.x
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