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From Noah Robin <s...@onastick.net>
Subject mod_rewrite/9386: mod_rewrite 'PT' flag reveals real path to directory
Date Mon, 07 Jan 2002 00:09:34 GMT

>Number:         9386
>Category:       mod_rewrite
>Synopsis:       mod_rewrite 'PT' flag reveals real path to directory
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Sun Jan 06 16:10:00 PST 2002
>Originator:     sitz@onastick.net
>Release:        1.3.22
Solaris 2.6, 105181-23 with gcc-2.95.2
Linux 2.2.19+openwallpatch with gcc-2.95.4
I have configured a mod_rewrite ruleset to handle mass virtualhosts (mod_mass_vhost wasn't
flexible enough). My ruleset is straightforward:

    RewriteMap  lowercase   int:tolower
    RewriteMap  vhost       dbm:/conf/vhosts_db
    RewriteCond   ${lowercase:%{HTTP_HOST}|NONE}  ^(.+)$
    RewriteCond   ${vhost:%1}  ^(/.*)$
    RewriteRule   ^/(.*)$   %1/$1 [L,PT]

However, if the server needs to return a 403 or 404 (and likely other error conditions in
which a path to the offending file is displayed), I get the following error:

The requested URL /htdocs/users/username/nonexistant/path was not found on this server.

If I change the RewriteRule to:

RewriteRule   ^/(.*)$   %1/$1 [L]

I get:

The requested URL /nonexistant/path was not found on this server.

I do realize that this is the result of the PT flag doing what it was designed to do, but
didn't know whether this particular condition was known or not.

*shrug* Error condition shouldn't, IMO, return the absolute path to a file. The handling which
is seen sans 'PT' is correct. 
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