https://bz.apache.org/bugzilla/show_bug.cgi?id=60116
Bug ID: 60116
Summary: NC matches in the Rewrite Valve cause matched groups
to be lower case.
Product: Tomcat 8
Version: 8.5.x-trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
I have the following rewrite rule:
RewriteCond %{REQUEST_URI} /test
RewriteCond %{QUERY_STRING}
.*a=([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}).* [NC]
RewriteRule .* - [E=X-Tenant-Id:%1,L]
This matches the query string to the supplied pattern in a case insensitive
way. However, the back reference %1 is always lower case, independent of the
actual query string. That is, if the query string is:
http://localhost:8080/test?a=CFA2AFDF-5D36-4D1F-B798-430557CF4355
the matched back reference %1 is cfa2afdf-5d36-4d1f-b798-430557cf4355.
This is strange and unexpected. It is also not how NC works in The Apache HTTP
server mod_rewrite, which just does the test in a case insensitive way but
returns the actual matched group. Case insensitive Java regular expressions
also do not change the case of any of the matched groups.
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