1 (* COCANWIKI - a wiki written in Objective CAML.
2 * Written by Richard W.M. Jones <rich@merjis.com>.
3 * Copyright (C) 2004 Merjis Ltd.
4 * $Id: file.ml,v 1.8 2004/10/15 16:03:01 rich Exp $
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
31 let run r (q : cgi) (dbh : Dbi.connection) hostid _ _ =
32 let name = q#param "name" in
34 try Some (int_of_string (q#param "version")) with Not_found -> None in
36 (* Get the file and its MIME type. *)
39 None -> "hostid = ? and name = ?", [`Int hostid; `String name]
41 "hostid = ? and (name = ? or name_deleted = ?) and id = ?",
42 [`Int hostid; `String name; `String name; `Int version] in
45 dbh#prepare_cached ("select content, mime_type, name is null as deleted
50 let data, mime_type, deleted =
51 match sth#fetch1 () with
52 [ `Binary data; `String mime_type; `Bool deleted ] ->
53 data, mime_type, deleted
54 | _ -> assert false in
56 (* If deleted, refuse to serve this file except if called from the
61 try Table.get (Request.headers_in r) "Referer" with Not_found -> "" in
63 try String.find referer "/_files?deleted"; true
64 with String.Invalid_string -> false in
67 failwith "file.ml: bandwidth theft avoided"
70 if version <> None then
71 (* Set a medium-length expiry time on this resource. *)
72 Table.set (Request.headers_out r) "Expires" (Expires.medium ());
74 (* Content-length header. *)
75 Table.set (Request.headers_out r) "Content-Length"
76 (string_of_int (String.length data));
78 q#header ~content_type:mime_type ();
82 register_script ~restrict:[CanView] run