Preliminary regeneration support
[hcoop/domtool2.git] / src / acl.sig
1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
2 * Copyright (c) 2006, Adam Chlipala
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 *)
18
19 (* Per-user access control lists for resources various *)
20
21 signature ACL = sig
22
23 type acl = {user : string, (* The UNIX user being granted a permission *)
24 class : string, (* The type of permission granted *)
25 value : string} (* The object for which it is granted *)
26
27 val query : acl -> bool
28 (* Is this permission granted? *)
29
30 val queryAll : string -> (string * string list) list
31 (* What are all of a user's permissions, by class? *)
32
33 val users : unit -> string list
34 (* Which users have been granted privileges? *)
35
36 val whoHas : {class : string, value : string} -> string list
37 (* Which users have a permission? *)
38
39 val class : {user : string, class : string} -> DataStructures.StringSet.set
40 (* For what objects does the user have the permission? *)
41
42 val grant : acl -> unit
43 val revoke : acl -> unit
44 (* Grant/ungrant the user the permission. *)
45
46 val read : string -> unit
47 val write : string -> unit
48 (* Read/write saved ACL state from/to a file *)
49
50 end