Daniel@0: /* Part of DML (Digital Music Laboratory)
Daniel@0: 	Copyright 2014-2015 Samer Abdallah, University of London
Daniel@0: 	 
Daniel@0: 	This program is free software; you can redistribute it and/or
Daniel@0: 	modify it under the terms of the GNU General Public License
Daniel@0: 	as published by the Free Software Foundation; either version 2
Daniel@0: 	of the License, or (at your option) any later version.
Daniel@0: 
Daniel@0: 	This program is distributed in the hope that it will be useful,
Daniel@0: 	but WITHOUT ANY WARRANTY; without even the implied warranty of
Daniel@0: 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Daniel@0: 	GNU General Public License for more details.
Daniel@0: 
Daniel@0: 	You should have received a copy of the GNU General Public
Daniel@0: 	License along with this library; if not, write to the Free Software
Daniel@0: 	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Daniel@0: */
Daniel@0: 
Daniel@0: :- module(dml_permissions, [file_permission/2]).
Daniel@0: 
Daniel@0: /** <module> control public access to DML resources
Daniel@0:  */
Daniel@0: 
Daniel@0: %% file_permission(+File,-Permission:oneof([public,user,private])) is det.
Daniel@0: %  This predicate is called to check whether or not the contents of a given
Daniel@0: %	file should be available. There are three levels of access:
Daniel@0: %		*  public
Daniel@0: %		   Accessible to everyone.
Daniel@0: %		*  user
Daniel@0: %		   Accessible to registered, logged in Cliopatria users.
Daniel@0: %	   *  private
Daniel@0: %	      Accessible to no-one.
Daniel@0: %  The default level is private for all files. If you wish to make some files
Daniel@0: %  available, you must copy (not link) this file to the 'config-available' directory
Daniel@0: %  of your Cliopatria installation and edit the definition of file_permission/2
Daniel@0: %  as you see fit.
Daniel@0: 
Daniel@0: %file_permission(Path,public) :- atom_concat('/home/dml/lib/mazurka/',_,Path), !.
Daniel@0: file_permission(_,public) :- user_db:logged_on(admin).
Daniel@0: file_permission(_,private).
Daniel@0: