mod_auth_pam patch

[Bruno FLEISCH]

Hello !

I've uploaded at  
http://sourceforge.net/tracker/index.php?func=detail&aid=1478302&group_id=6663&atid=306663 
a small patch for the Apache authentication module (mod_auth_pam).

This patch introduces these following new features:

* The name of the service used by the PAM library may be set by the 
Apache directive AuthPAM_ServiceName. (The default service name is 
"httpd"). This might be useful if you need different authentications 
modules for specific virtual hosts, directories, ...

* The module caches both positive (i.e.: successful) and negative 
authentication results. This improves performances on slow 
authentication providers (NIS/YP or LDAP), and limit deny-of-service 
attacks with bad credentials.

NB: The cache routines may be disabled by "undef-ing" the ENABLE_CACHE 
macro in source file.

Feel free to reach me  for any comment / remarks,

Thanks!

Best regards,

Bruno



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