https://issues.apache.org/bugzilla/show_bug.cgi?id=46398
Summary: FilesMatch matches against incorrect basename if
directory doesn't exist.
Product: Apache httpd-2
Version: 2.2.11
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Core
AssignedTo: [email protected]
ReportedBy: [email protected]
Example config to reproduce the issue:
<Directory /usr/local/apache2/htdocs/test>
Order Deny,Allow
Deny from all
<FilesMatch "bar$">
Allow from all
</FilesMatch>
</Directory>
- requesting "/test/blah" returns a forbidden error, which is OK
- requesting "/test/foo.bar" returns the file if it exists, which is OK
- requesting "/test/is/here/foo.bar" returns the file if it exists, which is OK
- requesting "/test/not/here/foo.bar" (with the directory "not"
not existing) returns a forbidden error instead of a 404 error.
In this case Apache walks up to "/usr/local/apache2/htdocs/test" and
then uses "not" as the basename and matches the regex from FilesMatch
against this. So using 'FilesMatch "not$"' would actually match and a
404 error is returned.
In most cases it probably doesn't matter if you get a 404 or a forbidden error,
but once you start doing RewriteRule stuff the above can lead to unexpected
results.
Add the following RewriteRules to the directory section:
RewriteRule ^/test/is/here/foo.bar$ /foo.bar [L]
RewriteRule ^/test/not/here/foo.bar$ /foo.bar [L]
- requesting "/test/is/here/foo.bar" redirects and returns the file /foo.bar
- requesting "/test/not/here/foo.bar" redirects internally, but then returns a
forbidden error.
In this case Apache first matches the basename "not" *and* the basename
"foo.bar" again the FilesMatch regex which fails ...
Using 'FilesMatch "(not|bar)$"' would actually work in this case, but
is not really something I would have expected.
Tested with 2.0.63 and 2.2.11.
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