1 (* Copyright (C) 2004-2011, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
26 type session_id = Uuidm.t
28 type matita_file = MatitaFilesystem.matita_flag * string
30 (* user table: user id, (password, optional session id) *)
31 type user = string * (string * session_id option)
33 let user_tbl = (ref [] : user list ref)
35 (* session table: session id, (user id, matita status, matita history *)
36 type session = session_id * (string * MatitaEngine.status * MatitaEngine.status list)
38 let session_tbl = (ref [] : session list ref)
40 exception UsernameCollision of string
42 let lookup_user uid = List.assoc uid !user_tbl
44 let user_of_session sid = let res,_,_ = List.assoc sid !session_tbl in res
46 let get_users () = List.map fst !user_tbl
48 let create_session uid =
49 let status = new MatitaEngine.status (Some uid) "cic:/matita" in
50 let history = [status] in
51 let pw,sid = List.assoc uid !user_tbl in
52 let clean_utbl = List.remove_assoc uid !user_tbl in
53 let new_session = Uuidm.create `V4 in
54 user_tbl := (uid,(pw,Some new_session))::clean_utbl;
55 let clean_stbl = match sid with
57 List.remove_assoc sid' !session_tbl
60 session_tbl := (new_session,(uid,status,history))::clean_stbl;
64 let get_session_owner sid =
65 let uid,_,_ = List.assoc sid !session_tbl
69 let _,st,_ = List.assoc sid !session_tbl
73 let _,_,hist = List.assoc sid !session_tbl
76 let set_status sid st =
77 let uid, oldst, hist = List.assoc sid !session_tbl in
78 session_tbl := (sid,(uid,st,hist))::(List.remove_assoc sid !session_tbl)
80 let set_history sid hist =
81 let uid, st, oldhist = List.assoc sid !session_tbl in
82 session_tbl := (sid,(uid,st,hist))::(List.remove_assoc sid !session_tbl)
85 let uid,st,hist = List.assoc sid !session_tbl in
86 let pw,_ = List.assoc uid !user_tbl in
87 user_tbl := (uid,(pw,None))::List.remove_assoc uid !user_tbl;
88 session_tbl := List.remove_assoc sid !session_tbl
92 user_tbl := List.remove_assoc uid !user_tbl
95 (* serialization and deserialization of the user table *)
97 let path = Helm_registry.get "matita.basedir" in
98 let dirname = Filename.dirname path in
99 HExtlib.mkdir dirname;
104 let clean_utbl = List.map (fun (uid,(pw,_)) -> uid,(pw,None)) !user_tbl in
105 let utbl_ch = open_out (config_path () ^ "/usertable.dump") in
106 Marshal.to_channel utbl_ch clean_utbl [];
112 let utbl_ch = open_in (config_path () ^ "/usertable.dump") in
113 user_tbl := Marshal.from_channel utbl_ch;
117 user_tbl := []; serialize());
118 (* old_sessions are now invalid *)
122 let write_ft uid ft =
123 let ft_ch = open_out (config_path () ^ "/ft_" ^ uid ^ ".dump") in
124 Marshal.to_channel ft_ch ft [];
130 let ft_ch = open_in (config_path () ^ "/ft_" ^ uid ^ ".dump") in
131 let ft = Marshal.from_channel ft_ch in
136 (* this is an error, we should rebuild the table by a diff of
137 the directory listing and svn stat *)
141 let set_file_flag uid files_flags =
142 let ft = read_ft uid in
143 let files = List.map fst files_flags in
144 let ft = List.filter (fun (x,_) -> not (List.mem x files)) ft in
145 let ft' = List.fold_left (fun acc (filename,flag) ->
146 let filename = MatitaFilesystem.normalize_qfn filename in
148 (filename,HExtlib.unopt flag)::acc
149 with Failure _ -> acc) [] files_flags
151 write_ft uid (ft'@ft)
154 let add_user uid pw =
156 let _ = lookup_user uid in
157 raise (UsernameCollision uid)
159 let ft = MatitaFilesystem.checkout uid in
160 user_tbl := (uid,(pw,None))::!user_tbl;
168 MatitaFilesystem.reset_lib ();