Received: (qmail 7284 invoked by uid 501); 12 Nov 2001 19:19:48 -0000
Message-Id: <20011112191948.7283.qmail@apache.org>
Date: 12 Nov 2001 19:19:48 -0000
From: Andrew Gilmartin <andrewgilmartin@pobox.com>
Reply-To: andrewgilmartin@pobox.com
To: submit@bugz.apache.org
Subject: DirectoryIndex using absolute CGI does not get PATH_INFO or PATH_TRANSLATED
X-Send-Pr-Version: 3.110

>Number:         8745
>Category:       mod_autoindex
>Synopsis:       DirectoryIndex using absolute CGI does not get PATH_INFO or PATH_TRANSLATED
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon Nov 12 11:20:00 PST 2001
>Closed-Date:    
>Last-Modified:  Wed Nov 14 08:50:00 PST 2001
>Originator:     andrewgilmartin@pobox.com
>Release:        1.3.20 (Unix)
>Organization:
apache
>Environment:
Linux cx21715-a.sking1.ri.home.com 2.2.19-4.1mdk
>Description:
When using DirectoryIndex with a CGI script at an absolute URI the script is called without PATH_INFO and PATH_TRANSLATED information. Without this it is impossible for the script to present a directory idex. (Note that no arguments with path informaton are passed to the script. Nor is the working directory set to the path.)
>How-To-Repeat:
Configure DirectoryIndex for a given location. Eg,

<Location />
Options Indexes
DirectoryIndex /cgi-bin/index.pl
</Location>

Created index.pl with the code

#!/usr/bin/perl
use Data::Dumper;
print "content-type: text/html\n\n<pre>", Dumper( \@ARGV, \%ENV ), "</pre>";

Now use the URL

http://localhost/

and you will see that the environment variable dump does not include the PATH_INFO or PATH_TRANSLATED variables.
>Fix:
No. I am happy to look into fixing it if this would help. I assume the problem is in mod_autoindex, but I do not know enough about the Apache code base to debug this further without quite some effort.
>Release-Note:
>Audit-Trail:

From: "Andrew Gilmartin" <andrew.gilmartin@ingenta.com>
To: <apbugs@Apache.Org>
Cc:  
Subject: Re: mod_autoindex/8745
Date: Wed, 14 Nov 2001 11:39:49 -0500

 The problem is not with mod_autoindex, but with mod_dir's handling of the
 internal redirect. Mod_dir knows nothing about the files listed in
 DirectoryIndex: It just tries to do an internal redirect to each file
 listed until one succeeds. The internal redirect looks different than
 mod_include's, for example, in that mod_include knows when it is calling a
 CGI script and so sets the redirect's environment by calling
 
         ap_add_common_vars(r);
         ap_add_cgi_vars(r);
 
 Mod_dir's does not have this foreknowledge and so (ultimately) only calls
 
         ap_add_common_vars(r);
 
 which does not setup PATH_INFO, etc.
 
 From what I can tell from reading the code so far is that mod_dir needs a
 special internal redirect is more aware of the parent environment. That is
 the directory's uri is the path info to the script at the given directory
 index.
 
 ---
 Andrew Gilmartin
 Senior Developer
 Ingenta
 andrew.gilmartin@ingenta.com
 andrewgilmartin (aim)
 401-743-3713 (cell)
 
 
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