RE: Alias/authentication precedence

"Anthony J. Biacco" <abiacco@xxxxxxxxxxxxxxxxxx> · Fri, 27 Feb 2009 10:56:27 -0700

I'm no expert, but I think..

1. No
2. No
3. NA
4. What you're missing is that the url path in ScriptAlias matches from the start of the uri..it's not a substring match.
For the authentication, I would THINK that the Location authentication would take effect, yes.
For the script alias thing, you can probably get away with a regex using scriptaliasmatch

ScriptAliasMatch ^/(dataentry|readonly)/cgi-bin/ /var/www/site1/cgi-bin/

-Tony

________________________________

From: André Warnier [mailto:aw@xxxxxxxxxx]
Sent: Fri 27/02/2009 09:56
To: users@xxxxxxxxxxxxxxxx
Subject:  Alias/authentication precedence

Hi.

Apache 2.2

Suppose I have a VirtualHost configured (partially) such :

DocumentRoot /var/www/site1/docs

ScriptAlias /cgi-bin/ /var/www/site1/cgi-bin/

<Directory /var/www/site1/cgi-bin>
   Order Allow,Deny
   Allow from all
   SetHandler  xxx
   ...
</Directory>
# Note : in the above directory is physically stored a script called
"myscript.pl"

<Location /dataentry>
   AuthType Basic
   AuthName dataentry
   ...
   Require user X
</Location>

<Location /readonly>
   AuthType Basic
   AuthName readonly
   ...
   Require valid-user
</Location>

and someone accesses this VHost via one of the URLs

A) http://site1.company.com/dataentry/cgi-bin/myscript.pl?arg=x
B) http://site1.company.com/readonly/cgi-bin/myscript.pl?arg=x

1) does the ScriptAlias above "match" URL (A) ?
2) does the ScriptAlias above (also) match URL (B) ?
3) if yes, is the authentication requirement in the corresponding
<Location> section invoked first (or at all), or do the ScriptAlias and
Directory "trump" the Location(s) ?

4) Am I missing something fundamental here ?

Background : basically I want to know if I can have a single copy of
script "myscript.pl" located under /var/www/site1/cgi-bin/, and invoke
it in different ways submitted to different authentication/authorization
criteria, leaving the script to figure out how it has been called
(though the URL path component).
Or if I need to duplicate the script as e.g.

ScriptAlias /dataentry/cgi-bin/ /var/www/site1/cgi-bin/dataentry
ScriptAlias /readonly/cgi-bin/ /var/www/site1/cgi-bin/readonly
etc.. (corresponding Directory and AAA rules)

Thanks

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