(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: create_host.ml,v 1.14 2006/12/06 09:46:57 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.
 *
 * NB. Because there might not be any hosts existing when this Wiki
 * is created, this is not a normal Cocanwiki.register_script script.
 * Instead, we're using the standard mod_caml Registry.
 *)

open Apache
open Registry
open Cgi
open Printf

open Cocanwiki_strings
open Cocanwiki_create_host

let split_re = Pcre.regexp "[\\s,;]+"

let run r =
  let q = new cgi r in
  let dbh = PGOCaml.connect ~database:"cocanwiki" () in
  PGOCaml.begin_work dbh;

  let canonical_hostname = q#param "canonical_hostname" in
  let hostnames = try q#param "hostnames" with Not_found -> "" in
  let title = q#param "title" in

  (* Check the title is reasonable. *)
  let title = trim title in
  if title = "" then (
    Cocanwiki_ok.error ~back_button:true ~title:"Bad title"
      r dbh (-1l) q "You must give a title for this Wiki.";
  ) else (
    (* In theory we could verify characters in hostnames.  However
     * it's probably best to assume the sysadmin knows what they're up to
     * here.  If this script is allowed to be accessed by untrusted
     * users, then this has security implications.
     *)
    let check_hostname h =
      let h = trim h in			(* Trim whitespace. *)
      let h = lowercase h in		(* Lowercase. *)
      h
    in

    let canonical_hostname = check_hostname canonical_hostname in
    let hostnames = Pcre.split ~rex:split_re hostnames in
    let hostnames = List.map check_hostname hostnames in
    let hostnames = List.filter ((<>) "") hostnames in

    let template =
      if q#param_true "template" then Int32.of_string (q#param "template")
      else 0l in

    let hostid = create_host dbh canonical_hostname hostnames template title
		   "Administrator" "123456" true None in

    (* Commit to the database. *)
    PGOCaml.commit dbh;

    (* Print confirmation page. *)
    let buttons = [
      { Template.StdPages.label = "OK";
	Template.StdPages.link = "/_bin/admin/host.cmo";
	Template.StdPages.method_ = None;
	Template.StdPages.params = [ "hostid", Int32.to_string hostid ] }
    ] in

    Cocanwiki_ok.ok ~title:"Wiki created" ~buttons
      r dbh (-1l) q "A new Wiki was created."
  )

let () =
  register_script run