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: upload_file.ml,v 1.14 2006/12/06 09:46:57 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.
30 open Cocanwiki_template
32 open Cocanwiki_emailnotify
34 open Cocanwiki_strings
36 (* Valid file names. *)
37 let file_ok_re = Pcre.regexp "^[a-z0-9][-._a-z0-9]*$"
39 let run r (q : cgi) dbh hostid { hostname = hostname } user=
40 let name = q#param "name" in
41 let title = q#param "title" in
43 (* See if there was an upload. *)
46 let upload = q#upload "file" in
50 error ~title:"No file" ~back_button:true
51 r dbh hostid q "No file was uploaded.";
54 (* Check the name is valid. *)
55 if not (Pcre.pmatch ~rex:file_ok_re name) then (
56 error ~title:"Bad File Name" ~back_button:true
58 ("The File Name must contain only lowercase English letters, " ^
59 "numbers, dots, dashes and underscore.");
63 (* Identify the MIME type from the extension. *)
64 let mime_type = mime_type_of_filename name in
66 let title = if string_is_whitespace title then None else Some title in
68 (* Check if something with the same name already exists. If replace=1
69 * then we can replace it, otherwise we must present an error message.
71 let replace = q#param_true "replace" in
73 "select 1 from files where hostid = $hostid and name = $name" in
74 let exists = rows = [Some 1l] in
78 error ~title:"File already exists" ~back_button:true
79 r dbh hostid q "An file with the same name already exists.";
82 PGSQL(dbh) "update files
83 set name_deleted = name, name = null
84 where hostid = $hostid and name = $name"
88 (* Put the file into the database. *)
90 "insert into files (hostid, name, content, title, mime_type)
91 values ($hostid, $name, $file, $?title, $mime_type)";
96 let subject = "File " ^ name ^ " has been uploaded." in
98 "Page: http://" ^ hostname ^ "/_files" in
100 email_notify ~body ~subject ~user dbh hostid;
102 let buttons = [ ok_button "/_files" ] in
103 ok ~title:"File uploaded" ~buttons
104 r dbh hostid q "File was uploaded successfully."
107 register_script ~restrict:[CanEdit] run