Source file eliommod_cookies.ml

(* Ocsigen
 * http://www.ocsigen.org
 * Copyright (C) 2010 Vincent Balat
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, with linking exception;
 * either version 2.1 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *)

open Js_of_ocaml
open Eliom_lib
include Eliom_cookies_base

(* CCC The tables are indexed by the hostname, not the port appear.
   there are no particular reason. If needed it is possible to add it *)
let cookie_tables :
    (float option * string * bool) Ocsigen_cookie_map.Map_inner.t
      Ocsigen_cookie_map.Map_path.t
      Jstable.t
  =
  Jstable.create ()

(** [in_local_storage] implements cookie substitutes for iOS WKWebView *)
let get_table ?(in_local_storage = false) = function
  | None -> Ocsigen_cookie_map.Map_path.empty
  | Some host ->
      if in_local_storage
      then
        let host = Js.string (host ^ "/substitutes") in
        Js.Optdef.case
          Dom_html.window##.localStorage
          (fun () -> Ocsigen_cookie_map.Map_path.empty)
          (fun st ->
             Js.Opt.case
               st ## (getItem host)
               (fun () -> Ocsigen_cookie_map.Map_path.empty)
               (fun v -> Json.unsafe_input v))
      else
        Js.Optdef.get
          (Jstable.find cookie_tables (Js.string host))
          (fun () -> Ocsigen_cookie_map.Map_path.empty)

(** [in_local_storage] implements cookie substitutes for iOS WKWebView *)
let set_table ?(in_local_storage = false) host t =
  match host with
  | None -> ()
  | Some host ->
      if in_local_storage
      then
        let host = Js.string (host ^ "/substitutes") in
        Js.Optdef.case
          Dom_html.window##.localStorage
          (fun () -> ())
          (fun st -> st ## (setItem host (Json.output t)))
      else Jstable.add cookie_tables (Js.string host) t

let now () =
  let date = new%js Js.date_now in
  date##getTime /. 1000.

(** [in_local_storage] implements cookie substitutes for iOS WKWebView *)
let update_cookie_table ?(in_local_storage = false) host cookies =
  let now = now () in
  Ocsigen_cookie_map.Map_path.iter
    (fun path table ->
       Ocsigen_cookie_map.Map_inner.iter
         (fun name -> function
            | OSet (Some exp, _, _) when exp <= now ->
                set_table ~in_local_storage host
                  (Ocsigen_cookie_map.Poly.remove ~path name
                     (get_table ~in_local_storage host))
            | OUnset ->
                set_table ~in_local_storage host
                  (Ocsigen_cookie_map.Poly.remove ~path name
                     (get_table ~in_local_storage host))
            | OSet (exp, value, secure) ->
                set_table ~in_local_storage host
                  (Ocsigen_cookie_map.Poly.add ~path name (exp, value, secure)
                     (get_table ~in_local_storage host)))
         table)
    cookies

(** [in_local_storage] implements cookie substitutes for iOS WKWebView *)
let get_cookies_to_send ?(in_local_storage = false) host https path =
  let now = now () in
  Ocsigen_cookie_map.Map_path.fold
    (fun cpath t cookies_to_send ->
       if Url.is_prefix_skip_end_slash
            (Url.remove_slash_at_beginning cpath)
            (Url.remove_slash_at_beginning path)
       then
         Ocsigen_cookie_map.Map_inner.fold
           (fun name (exp, value, secure) cookies_to_send ->
              match exp with
              | Some exp when exp <= now ->
                  set_table ~in_local_storage host
                    (Ocsigen_cookie_map.Poly.remove ~path:cpath name
                       (get_table ~in_local_storage host));
                  cookies_to_send
              | _ ->
                  if (not secure) || https
                  then (name, value) :: cookies_to_send
                  else cookies_to_send)
           t cookies_to_send
       else cookies_to_send)
    (get_table ~in_local_storage host)
    []

let make_new_session_id () =
  failwith
    "Cannot define anonymous coservices on client side. Ask their values to the server."