internal package Foswiki::LoginManager::ApacheLogin is a Foswiki::LoginManager 
This is login manager that you can specify in the security setup section of
configure. It instructs Foswiki to
cooperate with your web server (typically Apache) to require authentication
information (username & password) from users. It requires that you configure
your web server to demand authentication for scripts named "login" and anything
ending in "auth". The latter should be symlinks to existing scripts; e.g.,
viewauth → view, 
editauth → edit, and so on.
See also 
UserAuthentication.
Subclass of 
Foswiki::LoginManager; see that class for documentation of the
methods of this class.
  ClassMethod new ($session) 
Construct the 
ApacheLogin object
  ObjectMethod forceAuthentication () → boolean 
method called when authentication is required - redirects to (...|view)auth
Triggered on auth fail
  ObjectMethod loginUrl () → $loginUrl 
TODO: why is this not used internally? When is it called, and why
Content of a login link
  ObjectMethod login( $query, $session ) 
this allows the login and logon cgi-scripts to use the same code. 
all a logon does, is re-direct to viewauth, and apache then figures out 
if it needs to challenge the user
  ObjectMethod getUser () → $authUser 
returns the userLogin if stored in the apache CGI query (ie session)