Scripts updated to use new PG interface.

[cocanwiki.git] / scripts / upload_file.ml

diff --git a/scripts/upload_file.ml b/scripts/upload_file.ml
index bca6237..852302b 100644 (file)
--- a/scripts/upload_file.ml
+++ b/scripts/upload_file.ml
@@ -1,7 +1,22 @@
-(* COCANWIKI scripts.
+(* COCANWIKI - a wiki written in Objective CAML.
  * Written by Richard W.M. Jones <rich@merjis.com>.
  * Copyright (C) 2004 Merjis Ltd.
- * $Id: upload_file.ml,v 1.4 2004/09/08 09:54:28 rich Exp $
+ * $Id: upload_file.ml,v 1.13 2006/03/28 16:24:08 rich Exp $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
  *)
 
 open Apache
@@ -16,14 +31,12 @@ open Cocanwiki_template
 open Cocanwiki_ok
 open Cocanwiki_emailnotify
 open Cocanwiki_images
-
-let is_ws_re = Pcre.regexp "^\\s*$"
-let is_whitespace str = Pcre.pmatch ~rex:is_ws_re str
+open Cocanwiki_strings
 
 (* Valid file names. *)
 let file_ok_re = Pcre.regexp "^[a-z0-9][-._a-z0-9]*$"
 
-let run r (q : cgi) (dbh : Dbi.connection) (hostid, hostname, _) _ =
+let run r (q : cgi) dbh hostid { hostname = hostname } user=
   let name = q#param "name" in
   let title = q#param "title" in
 
@@ -35,42 +48,60 @@ let run r (q : cgi) (dbh : Dbi.connection) (hostid, hostname, _) _ =
     with
        Not_found ->
          error ~title:"No file" ~back_button:true
-           q "No file was uploaded.";
-         raise CgiExit in
+           dbh hostid q "No file was uploaded.";
+         return () in
 
   (* Check the name is valid. *)
   if not (Pcre.pmatch ~rex:file_ok_re name) then (
     error ~title:"Bad File Name" ~back_button:true
-      q ("The File Name must contain only lowercase English letters, " ^
-        "numbers, dots, dashes and underscore.");
-    raise CgiExit
+      dbh hostid q
+      ("The File Name must contain only lowercase English letters, " ^
+       "numbers, dots, dashes and underscore.");
+    return ()
   );
 
   (* Identify the MIME type from the extension. *)
   let mime_type = mime_type_of_filename name in
 
-  let title = if is_whitespace title then `Null else `String title in
+  let title = if string_is_whitespace title then None else Some title in
+
+  (* Check if something with the same name already exists.  If replace=1
+   * then we can replace it, otherwise we must present an error message.
+   *)
+  let replace = q#param_true "replace" in
+  let rows = PGSQL(dbh)
+    "select 1 from files where hostid = $hostid and name = $name" in
+  let exists = rows = [Some 1l] in
+
+  if exists then (
+    if not replace then (
+      error ~title:"File already exists" ~back_button:true
+       dbh hostid q "An file with the same name already exists.";
+    return ()
+    ) else (
+      PGSQL(dbh) "update files
+                     set name_deleted = name, name = null
+                   where hostid = $hostid and name = $name"
+    )
+  );
 
   (* Put the file into the database. *)
-  let sth =
-    dbh#prepare_cached
-      "insert into files (hostid, name, content, title, mime_type)
-       values (?, ?, ?, ?, ?)" in
-  sth#execute [`Int hostid; `String name; `Binary file; title;
-              `String mime_type];
+  PGSQL(dbh)
+    "insert into files (hostid, name, content, title, mime_type)
+     values ($hostid, $name, $file, $?title, $mime_type)";
 
-  dbh#commit ();
+  PGOCaml.commit dbh;
 
   (* Email notify. *)
   let subject = "File " ^ name ^ " has been uploaded." in
   let body = fun () ->
     "Page: http://" ^ hostname ^ "/_files" in
 
-  email_notify ~body ~subject dbh hostid;
+  email_notify ~body ~subject ~user dbh hostid;
 
   let buttons = [ ok_button "/_files" ] in
   ok ~title:"File uploaded" ~buttons
-    q "File was uploaded successfully."
+    dbh hostid q "File was uploaded successfully."
 
 let () =
   register_script ~restrict:[CanEdit] run