web_site.ml 49.9 KB
Newer Older
Stephane Glondu's avatar
Stephane Glondu committed
1 2 3
(**************************************************************************)
(*                                BELENIOS                                *)
(*                                                                        *)
Stephane Glondu's avatar
Stephane Glondu committed
4
(*  Copyright © 2012-2014 Inria                                           *)
Stephane Glondu's avatar
Stephane Glondu committed
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
(*                                                                        *)
(*  This program is free software: you can redistribute it and/or modify  *)
(*  it under the terms of the GNU Affero General Public License as        *)
(*  published by the Free Software Foundation, either version 3 of the    *)
(*  License, or (at your option) any later version, with the additional   *)
(*  exemption that compiling, linking, and/or using OpenSSL is allowed.   *)
(*                                                                        *)
(*  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     *)
(*  Affero General Public License for more details.                       *)
(*                                                                        *)
(*  You should have received a copy of the GNU Affero General Public      *)
(*  License along with this program.  If not, see                         *)
(*  <http://www.gnu.org/licenses/>.                                       *)
(**************************************************************************)

22
open Lwt
23
open Platform
24
open Serializable_j
25
open Signatures
26
open Common
Stephane Glondu's avatar
Stephane Glondu committed
27
open Web_serializable_j
28
open Web_common
29
open Web_signatures
30
open Web_services
Stephane Glondu's avatar
Stephane Glondu committed
31

32 33
let source_file = ref "belenios.tar.gz"
let spool_dir = ref "."
Stephane Glondu's avatar
Stephane Glondu committed
34

35 36 37 38 39 40 41 42 43 44 45 46
let get_single_line x =
  match_lwt Lwt_stream.get x with
  | None -> return None
  | Some _ as line ->
    lwt b = Lwt_stream.is_empty x in
    if b then (
      return line
    ) else (
      Lwt_stream.junk_while (fun _ -> true) x >>
      return None
    )

47 48
let ( / ) = Filename.concat

49 50 51 52 53 54 55 56
let delete_shallow_directory dir =
  lwt () =
    Lwt_unix.files_of_directory dir |>
    Lwt_stream.filter (fun x -> x <> "." && x <> "..") |>
    Lwt_stream.iter_s (fun x -> Lwt_unix.unlink (dir/x))
  in
  Lwt_unix.rmdir dir

Stephane Glondu's avatar
Stephane Glondu committed
57
module PString = String
Stephane Glondu's avatar
Stephane Glondu committed
58

Stephane Glondu's avatar
Stephane Glondu committed
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
open Eliom_service
open Eliom_registration

module LwtRandom = MakeLwtRandom (struct let rng = make_rng () end)

(* Persistent table, used to initialize the server. *)
let election_ptable = Ocsipersist.open_table "site_elections"

(* Table with elections in setup mode. *)
let election_stable = Ocsipersist.open_table "site_setup"

(* Table with tokens given to trustees. *)
let election_pktokens = Ocsipersist.open_table "site_pktokens"

(* Table with tokens given to credential authorities. *)
let election_credtokens = Ocsipersist.open_table "site_credtokens"

(* In-memory table, indexed by UUID, contains closures. *)
let election_table = ref SMap.empty

module T = Web_templates

let register_election params web_params =
  let module P = (val params : ELECTION_PARAMS) in
  let uuid = Uuidm.to_string P.params.e_uuid in
  let module D = struct
    module G = P.G
    let election = {
      e_params = P.params;
      e_pks = None;
      e_fingerprint = P.fingerprint;
    }
  end in
  let module P = (val web_params : WEB_PARAMS) in
93
  let module W = Web_election.Make (D) (P) (LwtRandom) in
94 95
  let election = (module W : WEB_ELECTION) in
  fun () ->
Stephane Glondu's avatar
Stephane Glondu committed
96 97 98 99 100 101 102
    (* starting from here, we do side-effects on the running server *)
    election_table := SMap.add uuid election !election_table;
    election

(* Mutex to avoid simultaneous registrations of the same election *)
let registration_mutex = Lwt_mutex.create ()

103
let import_election f =
Stephane Glondu's avatar
Stephane Glondu committed
104 105 106 107 108 109 110 111 112
  Lwt_mutex.lock registration_mutex >>
  try_lwt
    lwt raw_election =
      Lwt_io.lines_of_file f.f_election |>
      get_single_line >>=
      (function
      | Some e -> return e
      | None -> Printf.ksprintf
        failwith "election.json must contain a single line"
113
      )
Stephane Glondu's avatar
Stephane Glondu committed
114 115
    in
    let params = Group.election_params_of_string raw_election in
116 117
    let module P = (val params : ELECTION_PARAMS) in
    let uuid = Uuidm.to_string P.params.e_uuid in
Stephane Glondu's avatar
Stephane Glondu committed
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
    lwt exists =
      try_lwt
        lwt _ = Ocsipersist.find election_ptable uuid in
        return true
      with Not_found -> return false
    in
    if exists then (
      Lwt_mutex.unlock registration_mutex;
      return None
    ) else (
      let dir = !spool_dir/uuid in
      lwt metadata =
        Lwt_io.chars_of_file f.f_metadata |>
        Lwt_stream.to_string >>=
        wrap1 metadata_of_string
      in
      let module X = struct
        let metadata = metadata
        let dir = dir
137
      end in
Stephane Glondu's avatar
Stephane Glondu committed
138
      let web_params = (module X : WEB_PARAMS) in
139
      let do_register = register_election params web_params in
140
      let module G = P.G in
Stephane Glondu's avatar
Stephane Glondu committed
141 142
      let module KG = Election.MakeSimpleDistKeyGen (G) (LwtRandom) in
      let public_keys = Lwt_io.lines_of_file f.f_public_keys in
Stephane Glondu's avatar
Stephane Glondu committed
143
      let voters = Lwt_io.lines_of_file f.f_voters in
144 145 146 147 148
      lwt () =
        match_lwt Lwt_stream.peek voters with
        | Some _ -> return_unit
        | None -> Lwt.fail (Failure "No voters")
      in
149 150 151 152 153 154 155 156 157 158 159 160
      lwt () =
        match metadata.e_auth_config with
        | Some [x] ->
           if x.auth_system = "password" then
             let table = "password_" ^ underscorize uuid in
             let table = Ocsipersist.open_table table in
             lwt n = Ocsipersist.length table in
             if n = 0 then Lwt.fail (Failure "No passwords")
             else return_unit
           else return_unit
        | _ -> return_unit
      in
Stephane Glondu's avatar
Stephane Glondu committed
161 162 163 164 165 166 167
      lwt pks = Lwt_stream.(
        clone public_keys |>
        map (trustee_public_key_of_string G.read) |>
        to_list >>= wrap1 Array.of_list
      ) in
      if not (Array.forall KG.check pks) then
        failwith "Public keys are invalid.";
168
      if not G.(P.params.e_public_key =~ KG.combine pks) then
Stephane Glondu's avatar
Stephane Glondu committed
169 170 171 172 173 174 175 176
        failwith "Public keys mismatch with election public key.";
      let public_creds = Lwt_io.lines_of_file f.f_public_creds in
      lwt () = Lwt_stream.(
        clone public_creds |>
        iter_s (fun x ->
          if not G.(check @@ of_string x) then (
            Lwt.fail @@ Failure "Public credentials are invalid."
          ) else return ()
177
        )
Stephane Glondu's avatar
Stephane Glondu committed
178 179 180 181 182 183 184 185 186 187 188
      ) in
      let module R = struct
        let register () =
          try_lwt
            Lwt_unix.mkdir dir 0o700 >>
            Lwt_io.(with_file Output (dir/"election.json") (fun oc ->
              write_line oc raw_election
            )) >>
            Lwt_io.(with_file Output (dir/"public_keys.jsons") (fun oc ->
              write_lines oc public_keys
            )) >>
Stephane Glondu's avatar
Stephane Glondu committed
189 190 191
            Lwt_io.(with_file Output (dir/"voters.txt") (fun oc ->
              write_lines oc voters
            )) >>
Stephane Glondu's avatar
Stephane Glondu committed
192 193
            let election = do_register () in
            let module W = (val election : WEB_ELECTION) in
194 195 196 197 198 199 200 201 202 203 204
            lwt () =
              match W.metadata.e_auth_config with
              | None -> return ()
              | Some xs ->
                 let auth_config =
                   List.map (fun {auth_system; auth_instance; auth_config} ->
                     auth_instance, (auth_system, List.map snd auth_config)
                   ) xs
                 in
                 Web_persist.set_auth_config uuid auth_config
            in
Stephane Glondu's avatar
Stephane Glondu committed
205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230
            let () =
              Ocsigen_messages.debug (fun () ->
                Printf.sprintf "Injecting credentials for %s" uuid
              )
            in
            public_creds |>
            Lwt_stream.iter_s W.B.inject_cred >>
            W.B.update_files () >>
            Ocsipersist.add election_ptable uuid (raw_election, web_params) >>
            let () = Lwt_mutex.unlock registration_mutex in
            return election
          with e ->
            lwt () =
              try_lwt delete_shallow_directory dir
              with e ->
                Printf.ksprintf
                  (fun s ->
                   return (Ocsigen_messages.unexpected_exception e s))
                  "error while deleting %s after failure of %s"
                  dir uuid
            in
            Lwt_mutex.unlock registration_mutex;
            Lwt.fail e
      end in
      (* until here, no side-effects on the running server *)
      return @@ Some (module R : REGISTRABLE_ELECTION)
Stephane Glondu's avatar
Stephane Glondu committed
231
    )
Stephane Glondu's avatar
Stephane Glondu committed
232 233 234 235 236 237 238
  with e ->
    Lwt_mutex.unlock registration_mutex;
    Lwt.fail e

lwt () =
  Ocsipersist.iter_step (fun uuid (raw_election, web_params) ->
    let params = Group.election_params_of_string raw_election in
239
    let do_register = register_election params web_params in
Stephane Glondu's avatar
Stephane Glondu committed
240 241 242 243 244 245 246 247 248 249 250
    let election = do_register () in
    let module W = (val election : WEB_ELECTION) in
    assert (uuid = Uuidm.to_string W.election.e_params.e_uuid);
    Ocsigen_messages.debug (fun () ->
      Printf.sprintf "Initialized election %s from persistent store" uuid
    );
    return ()
  ) election_ptable

let () = Any.register ~service:home
  (fun () () ->
Stephane Glondu's avatar
Stephane Glondu committed
251
    Eliom_reference.unset Web_auth_state.cont >>
252
    T.home () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
253 254 255 256
  )

let () = Html5.register ~service:admin
  (fun () () ->
Stephane Glondu's avatar
Stephane Glondu committed
257 258 259
    let cont () = Redirection.send admin in
    Eliom_reference.set Web_auth_state.cont [cont] >>
    lwt site_user = Web_auth_state.get_site_user () in
Stephane Glondu's avatar
Stephane Glondu committed
260
    lwt elections =
261
      match site_user with
262
      | None -> return None
Stephane Glondu's avatar
Stephane Glondu committed
263
      | Some u ->
264
         lwt elections, tallied =
265 266 267
           SMap.fold (fun _ w accu ->
             let module W = (val w : WEB_ELECTION) in
             if W.metadata.e_owner = Some u then (
268 269
               let uuid_s = Uuidm.to_string W.election.e_params.e_uuid in
               lwt state = Web_persist.get_election_state uuid_s in
270
               lwt date = Web_persist.get_election_date uuid_s in
271 272
               lwt elections, tallied = accu in
               match state with
273 274
               | `Tallied _ -> return (elections, (date, w) :: tallied)
               | _ -> return ((date, w) :: elections, tallied)
275 276 277
             ) else (
               accu
             )
278
           ) !election_table (return ([], []))
279 280 281
         and setup_elections =
           Ocsipersist.fold_step (fun k v accu ->
             if v.se_owner = u
282
             then return ((uuid_of_string k, v.se_questions.t_name) :: accu)
283 284
             else return accu
           ) election_stable []
285 286 287 288 289 290 291
         in
         let sort l =
           List.sort (fun (x, _) (y, _) -> datetime_compare x y) l |>
           List.map (fun (_, x) -> x)
         in
         let elections = sort elections and tallied = sort tallied in
         return @@ Some (elections, tallied, setup_elections)
Stephane Glondu's avatar
Stephane Glondu committed
292
    in
293
    T.admin ~elections ()
Stephane Glondu's avatar
Stephane Glondu committed
294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
  )

let () = File.register
  ~service:source_code
  ~content_type:"application/x-gzip"
  (fun () () -> return !source_file)

let do_get_randomness =
  let prng = Lazy.lazy_from_fun (Lwt_preemptive.detach (fun () ->
    pseudo_rng (random_string secure_rng 16)
  )) in
  let mutex = Lwt_mutex.create () in
  fun () ->
    Lwt_mutex.with_lock mutex (fun () ->
      lwt prng = Lazy.force prng in
      return (random_string prng 32)
310 311
    )

Stephane Glondu's avatar
Stephane Glondu committed
312 313 314 315 316 317 318 319 320 321 322 323 324
let () = String.register
  ~service:get_randomness
  (fun () () ->
    lwt r = do_get_randomness () in
    b64_encode_compact r |>
    (fun x -> string_of_randomness { randomness=x }) |>
    (fun x -> return (x, "application/json"))
  )

let generate_uuid = Uuidm.v4_gen (Random.State.make_self_init ())

let () = Redirection.register ~service:election_setup_new
  (fun () () ->
Stephane Glondu's avatar
Stephane Glondu committed
325
   match_lwt Web_auth_state.get_site_user () with
Stephane Glondu's avatar
Stephane Glondu committed
326 327 328 329 330 331
   | Some u ->
      let uuid = generate_uuid () in
      let uuid_s = Uuidm.to_string uuid in
      lwt token = generate_token () in
      let se_metadata = {
        e_owner = Some u;
332
        e_auth_config = Some [{auth_system = "password"; auth_instance = "password"; auth_config = []}];
333
        e_cred_authority = None;
Stephane Glondu's avatar
Stephane Glondu committed
334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349
      } in
      let question = {
        q_answers = [| "Answer 1"; "Answer 2" |];
        q_min = 0;
        q_max = 1;
        q_question = "Question 1?";
      } in
      let se_questions = {
        t_description = "Description of the election.";
        t_name = "Name of the election";
        t_questions = [| question |];
        t_short_name = "short_name";
      } in
      let se = {
        se_owner = u;
        se_group = "{\"g\":\"14887492224963187634282421537186040801304008017743492304481737382571933937568724473847106029915040150784031882206090286938661464458896494215273989547889201144857352611058572236578734319505128042602372864570426550855201448111746579871811249114781674309062693442442368697449970648232621880001709535143047913661432883287150003429802392229361583608686643243349727791976247247948618930423866180410558458272606627111270040091203073580238905303994472202930783207472394578498507764703191288249547659899997131166130259700604433891232298182348403175947450284433411265966789131024573629546048637848902243503970966798589660808533\",\"p\":\"16328632084933010002384055033805457329601614771185955389739167309086214800406465799038583634953752941675645562182498120750264980492381375579367675648771293800310370964745767014243638518442553823973482995267304044326777047662957480269391322789378384619428596446446984694306187644767462460965622580087564339212631775817895958409016676398975671266179637898557687317076177218843233150695157881061257053019133078545928983562221396313169622475509818442661047018436264806901023966236718367204710755935899013750306107738002364137917426595737403871114187750804346564731250609196846638183903982387884578266136503697493474682071\",\"q\":\"61329566248342901292543872769978950870633559608669337131139375508370458778917\"}";
Stephane Glondu's avatar
Stephane Glondu committed
350
        se_voters = [];
Stephane Glondu's avatar
Stephane Glondu committed
351 352 353 354 355 356 357 358 359 360 361
        se_questions;
        se_public_keys = [];
        se_metadata;
        se_public_creds = token;
      } in
      lwt () = Ocsipersist.add election_stable uuid_s se in
      lwt () = Ocsipersist.add election_credtokens token uuid_s in
      return (preapply election_setup uuid)
  | None -> forbidden ()
  )

362 363 364 365 366 367 368 369 370 371
let generic_setup_page f uuid () =
  match_lwt Web_auth_state.get_site_user () with
  | Some u ->
     let uuid_s = Uuidm.to_string uuid in
     lwt se = Ocsipersist.find election_stable uuid_s in
     if se.se_owner = u
     then f uuid se ()
     else forbidden ()
  | None -> forbidden ()

Stephane Glondu's avatar
Stephane Glondu committed
372
let () = Html5.register ~service:election_setup
373
  (generic_setup_page T.election_setup)
Stephane Glondu's avatar
Stephane Glondu committed
374

375
let () = Html5.register ~service:election_setup_trustees
376 377 378 379
  (generic_setup_page T.election_setup_trustees)

let () = Html5.register ~service:election_setup_credential_authority
  (generic_setup_page T.election_setup_credential_authority)
380

Stephane Glondu's avatar
Stephane Glondu committed
381 382
let election_setup_mutex = Lwt_mutex.create ()

383
let handle_setup f uuid x =
Stephane Glondu's avatar
Stephane Glondu committed
384
  match_lwt Web_auth_state.get_site_user () with
Stephane Glondu's avatar
Stephane Glondu committed
385 386 387 388 389 390
  | Some u ->
     let uuid_s = Uuidm.to_string uuid in
     Lwt_mutex.with_lock election_setup_mutex (fun () ->
       lwt se = Ocsipersist.find election_stable uuid_s in
       if se.se_owner = u then (
         try_lwt
391
           lwt cont = f se x u uuid in
Stephane Glondu's avatar
Stephane Glondu committed
392
           Ocsipersist.add election_stable uuid_s se >>
393
           cont ()
Stephane Glondu's avatar
Stephane Glondu committed
394
         with e ->
395
           T.generic_page ~title:"Error" (Printexc.to_string e) () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
396 397 398
       ) else forbidden ()
     )
  | None -> forbidden ()
399

400 401
let redir_preapply s u () = Redirection.send (preapply s u)

402 403 404 405
let () =
  Any.register
    ~service:election_setup_description
    (handle_setup
406
       (fun se (name, description) _ uuid ->
407 408 409
         se.se_questions <- {se.se_questions with
           t_name = name;
           t_description = description;
410 411
         };
         return (redir_preapply election_setup uuid)))
412

Stephane Glondu's avatar
Stephane Glondu committed
413 414 415 416
let () =
  Any.register
    ~service:election_setup_group
    (handle_setup
417
       (fun se x _ uuid ->
Stephane Glondu's avatar
Stephane Glondu committed
418 419
        let _group = Group.of_string x in
        (* we keep it as a string since it contains a type *)
420 421
        se.se_group <- x;
        return (redir_preapply election_setup uuid)))
422

Stephane Glondu's avatar
Stephane Glondu committed
423 424 425 426
let () =
  Any.register
    ~service:election_setup_metadata
    (handle_setup
427
       (fun se x u uuid ->
Stephane Glondu's avatar
Stephane Glondu committed
428 429
        let metadata = metadata_of_string x in
        if metadata.e_owner <> Some u then failwith "wrong owner";
430 431
        se.se_metadata <- metadata;
        return (redir_preapply election_setup uuid)))
432

433 434 435 436
let () =
  Any.register
    ~service:election_setup_auth
    (handle_setup
437 438
       (fun se auth_system _ uuid ->
         (match auth_system with
439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457
         | Some (("dummy" | "password") as auth_system) ->
            se.se_metadata <- {
              se.se_metadata with
                e_auth_config = Some [{
                  auth_system;
                  auth_instance = auth_system;
                  auth_config = []
                }]
            }
         | Some "cas" ->
            se.se_metadata <- {
              se.se_metadata with
                e_auth_config = Some [{
                  auth_system = "cas";
                  auth_instance = "cas";
                  auth_config = ["server", ""];
                }]
            }
         | Some x -> failwith ("unknown authentication system: "^x)
458 459
         | None -> failwith "no authentication system was given");
         return (redir_preapply election_setup uuid)))
460 461 462 463 464

let () =
  Any.register
    ~service:election_setup_auth_cas
    (handle_setup
465
       (fun se server _ uuid ->
466 467 468 469 470 471 472
         se.se_metadata <- {
           se.se_metadata with
             e_auth_config = Some [{
               auth_system = "cas";
               auth_instance = "cas";
               auth_config = ["server", server];
             }]
473 474
         };
         return (redir_preapply election_setup uuid)))
475

476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497
let template_password = format_of_string
  "You are listed as a voter for the election

  %s

You will find below your login and password.  To cast a vote, you will
also need a credential, sent in a separate email.  Be careful,
passwords and credentials look similar but play different roles.  You
will be asked to enter your credential before entering the voting
booth.  Login and passwords are required once your ballot is ready to
be cast.

Username: %s
Password: %s
Page of the election: %s

Note that you are allowed to vote several times.  Only the last vote
counts.

-- 
Belenios"

498 499 500 501 502 503 504 505 506
let generate_password table title url v =
  lwt salt = generate_token () in
  lwt password = generate_token () in
  let hashed = sha256_hex (salt ^ password) in
  lwt () = Ocsipersist.add table v (salt, hashed) in
  let body = Printf.sprintf template_password title v password url in
  let subject = "Your password for election " ^ title in
  send_email "noreply@belenios.org" v subject body

507 508 509 510 511 512 513 514 515 516
let () =
  Any.register
    ~service:election_setup_auth_genpwd
    (handle_setup
       (fun se () _ uuid ->
         let table =
           "password_" ^
           let u = Uuidm.to_string uuid in
           underscorize u
         in
517 518 519 520 521
         let title = se.se_questions.t_name in
         let url = Eliom_uri.make_string_uri
           ~absolute:true ~service:election_home
           (uuid, ()) |> rewrite_prefix
         in
522
         let table = Ocsipersist.open_table table in
523
         Lwt_list.iter_s (generate_password table title url) se.se_voters >>
524 525 526
         return (fun () ->
           T.generic_page ~title:"Success"
             "Passwords have been generated and mailed!" () >>= Html5.send)))
527

528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558
let () =
  Any.register
    ~service:election_regenpwd
    (fun ((uuid, ()), user) () ->
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
      lwt site_user = Web_auth_state.get_site_user () in
      match site_user with
      | Some u when W.metadata.e_owner = Some u ->
         let table = "password_" ^ underscorize uuid_s in
         let table = Ocsipersist.open_table table in
         let title = W.election.e_params.e_name in
         let url = Eliom_uri.make_string_uri
           ~absolute:true ~service:election_home
           (uuid, ()) |> rewrite_prefix
         in
         begin try_lwt
           lwt _ = Ocsipersist.find table user in
           generate_password table title url user >>
           T.generic_page ~title:"Success"
             ("A new password has been mailed to " ^ user ^ ".") ()
           >>= Html5.send
         with Not_found ->
           T.generic_page ~title:"Error"
             (user ^ " is not a registered user for this election.") ()
           >>= Html5.send
         end
      | _ -> forbidden ()
    )

Stephane Glondu's avatar
Stephane Glondu committed
559 560 561 562
let () =
  Html5.register
    ~service:election_setup_questions
    (fun uuid () ->
Stephane Glondu's avatar
Stephane Glondu committed
563
     match_lwt Web_auth_state.get_site_user () with
564 565
     | Some u ->
        let uuid_s = Uuidm.to_string uuid in
Stephane Glondu's avatar
Stephane Glondu committed
566 567
        lwt se = Ocsipersist.find election_stable uuid_s in
        if se.se_owner = u
568
        then T.election_setup_questions uuid se ()
Stephane Glondu's avatar
Stephane Glondu committed
569 570
        else forbidden ()
     | None -> forbidden ()
571 572
    )

Stephane Glondu's avatar
Stephane Glondu committed
573 574 575 576
let () =
  Any.register
    ~service:election_setup_questions_post
    (handle_setup
577 578 579
       (fun se x _ uuid ->
        se.se_questions <- template_of_string x;
         return (redir_preapply election_setup_questions uuid)))
Stephane Glondu's avatar
Stephane Glondu committed
580

Stephane Glondu's avatar
Stephane Glondu committed
581 582 583 584
let () =
  Html5.register
    ~service:election_setup_voters
    (fun uuid () ->
Stephane Glondu's avatar
Stephane Glondu committed
585
      match_lwt Web_auth_state.get_site_user () with
Stephane Glondu's avatar
Stephane Glondu committed
586 587 588 589
      | Some u ->
         let uuid_s = Uuidm.to_string uuid in
         lwt se = Ocsipersist.find election_stable uuid_s in
         if se.se_owner = u
590
         then T.election_setup_voters uuid se ()
Stephane Glondu's avatar
Stephane Glondu committed
591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607
         else forbidden ()
      | None -> forbidden ()
    )

(* see http://www.regular-expressions.info/email.html *)
let email_rex = Pcre.regexp
  ~flags:[`CASELESS]
  "^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,7}$"

let is_email x =
  try ignore (Pcre.pcre_exec ~rex:email_rex x); true
  with Not_found -> false

let () =
  Any.register
    ~service:election_setup_voters_post
    (handle_setup
608
       (fun se x _ uuid ->
Stephane Glondu's avatar
Stephane Glondu committed
609 610 611 612 613 614 615
         let xs = Pcre.split x in
         let () =
           try
             let bad = List.find (fun x -> not (is_email x)) xs in
             Printf.ksprintf failwith "%S is not a valid address" bad
           with Not_found -> ()
         in
616 617
         se.se_voters <- xs;
         return (redir_preapply election_setup uuid)))
Stephane Glondu's avatar
Stephane Glondu committed
618

Stephane Glondu's avatar
Stephane Glondu committed
619 620 621
let () =
  Redirection.register
    ~service:election_setup_trustee_add
622
    (fun uuid () ->
Stephane Glondu's avatar
Stephane Glondu committed
623
     match_lwt Web_auth_state.get_site_user () with
624 625
     | Some u ->
        let uuid_s = Uuidm.to_string uuid in
Stephane Glondu's avatar
Stephane Glondu committed
626 627 628 629 630 631 632 633 634 635
        Lwt_mutex.with_lock election_setup_mutex (fun () ->
          lwt se = Ocsipersist.find election_stable uuid_s in
          if se.se_owner = u
          then (
            lwt token = generate_token () in
            se.se_public_keys <- (token, ref "") :: se.se_public_keys;
            Ocsipersist.add election_stable uuid_s se >>
            Ocsipersist.add election_pktokens token uuid_s
          ) else forbidden ()
        ) >>
636
        return (preapply election_setup_trustees uuid)
637 638 639 640 641 642 643
     | None -> forbidden ()
    )

let () =
  Redirection.register
    ~service:election_setup_trustee_del
    (fun uuid () ->
Stephane Glondu's avatar
Stephane Glondu committed
644
     match_lwt Web_auth_state.get_site_user () with
645 646 647 648 649 650 651 652 653 654 655 656 657 658
     | Some u ->
        let uuid_s = Uuidm.to_string uuid in
        Lwt_mutex.with_lock election_setup_mutex (fun () ->
          lwt se = Ocsipersist.find election_stable uuid_s in
          if se.se_owner = u
          then (
            match se.se_public_keys with
            | (token, _) :: xs ->
               se.se_public_keys <- xs;
               Ocsipersist.add election_stable uuid_s se >>
               Ocsipersist.remove election_pktokens token
            | _ -> return ()
          ) else forbidden ()
        ) >>
659
        return (preapply election_setup_trustees uuid)
660 661 662
     | None -> forbidden ()
    )

Stephane Glondu's avatar
Stephane Glondu committed
663 664 665 666 667 668 669 670
let () =
  Html5.register
    ~service:election_setup_credentials
    (fun token () ->
     lwt uuid = Ocsipersist.find election_credtokens token in
     lwt se = Ocsipersist.find election_stable uuid in
     T.election_setup_credentials token uuid se ()
    )
671

Stephane Glondu's avatar
Stephane Glondu committed
672 673 674 675 676 677 678 679
let () =
  File.register
    ~service:election_setup_credentials_download
    ~content_type:"text/plain"
    (fun token () ->
     lwt uuid = Ocsipersist.find election_credtokens token in
     return (!spool_dir / uuid ^ ".public_creds.txt")
    )
680

Stephane Glondu's avatar
Stephane Glondu committed
681 682 683
let wrap_handler f =
  try_lwt f ()
  with
684
  | e -> T.generic_page ~title:"Error" (Printexc.to_string e) () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710

let handle_credentials_post token creds =
  lwt uuid = Ocsipersist.find election_credtokens token in
  lwt se = Ocsipersist.find election_stable uuid in
  let module G = (val Group.of_string se.se_group : GROUP) in
  let fname = !spool_dir / uuid ^ ".public_creds.txt" in
  Lwt_mutex.with_lock
    election_setup_mutex
    (fun () ->
     Lwt_io.with_file
       ~flags:(Unix.([O_WRONLY; O_NONBLOCK; O_CREAT; O_TRUNC]))
       ~perm:0o600 ~mode:Lwt_io.Output fname
       (fun oc -> Lwt_io.write_chars oc creds)
    ) >>
  lwt () =
    let i = ref 1 in
    Lwt_stream.iter
      (fun x ->
       try
         let x = G.of_string x in
         if not (G.check x) then raise Exit;
         incr i
       with _ ->
         Printf.ksprintf failwith "invalid credential at line %d" !i)
      (Lwt_io.lines_of_file fname)
  in
711
  let () = se.se_metadata <- {se.se_metadata with e_cred_authority = None} in
712 713
  T.generic_page ~title:"Success"
    "Credentials have been received and checked!" () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
714 715 716 717 718 719 720

let () =
  Any.register
    ~service:election_setup_credentials_post
    (fun token creds ->
     let s = Lwt_stream.of_string creds in
     wrap_handler (fun () -> handle_credentials_post token s))
721

Stephane Glondu's avatar
Stephane Glondu committed
722 723 724 725 726 727 728
let () =
  Any.register
    ~service:election_setup_credentials_post_file
    (fun token creds ->
     let s = Lwt_io.chars_of_file creds.Ocsigen_extensions.tmp_filename in
     wrap_handler (fun () -> handle_credentials_post token s))

729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771
module Credgen = struct
  module String = PString

  (* FIXME: duplicate of Tool_credgen *)

  let get_random_char =
    let prng = Lazy.lazy_from_fun (Lwt_preemptive.detach (fun () ->
      pseudo_rng (random_string secure_rng 16)
    )) in
    let mutex = Lwt_mutex.create () in
    fun () ->
      Lwt_mutex.with_lock mutex (fun () ->
        lwt prng = Lazy.force prng in
        let s = random_string prng 1 in
        return @@ s.[0]
      )

  (* Beware: the following must be changed in accordance with the booth! *)
  let digits = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
  let token_length = 14
  let n58 = Z.of_int 58
  let n53 = Z.of_int 53

  let generate_raw_token () =
    let res = String.create token_length in
    let rec loop i accu =
      if i < token_length then (
        lwt digit = get_random_char () in
        let digit = int_of_char digit mod 58 in
        res.[i] <- digits.[digit];
        loop (i+1) Z.(n58 * accu + of_int digit)
      ) else return (res, accu)
    in loop 0 Z.zero

  let add_checksum (raw, value) =
    let checksum = 53 - Z.(to_int (value mod n53)) in
    return (raw ^ String.make 1 digits.[checksum])

  let generate () =
    generate_raw_token () >>= add_checksum

end

772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793
let template_credential = format_of_string
  "You are listed as a voter for the election

  %s

You will find below your login and credential.  To cast a vote, you will
also need a password, sent in a separate email.  Be careful,
passwords and credentials look similar but play different roles.  You
will be asked to enter your credential before entering the voting
booth.  Login and passwords are required once your ballot is ready to
be cast.

Username: %s
Credential: %s
Page of the election: %s

Note that you are allowed to vote several times.  Only the last vote
counts.

-- 
Belenios"

794 795 796
let () =
  Any.register
    ~service:election_setup_credentials_server
797
    (handle_setup (fun se () _ uuid ->
798 799 800
      let () = se.se_metadata <- {se.se_metadata with
        e_cred_authority = Some "server"
      } in
801
      let uuid_s = Uuidm.to_string uuid in
802 803 804 805 806
      let title = se.se_questions.t_name in
      let url = Eliom_uri.make_string_uri
        ~absolute:true ~service:election_home
        (uuid, ()) |> rewrite_prefix
      in
807 808 809 810 811 812 813 814 815 816 817 818
      lwt se = Ocsipersist.find election_stable uuid_s in
      let module S = Set.Make (PString) in
      let module G = (val Group.of_string se.se_group : GROUP) in
      lwt creds =
        Lwt_list.fold_left_s (fun accu id ->
          lwt cred = Credgen.generate () in
          let priv_cred = derive_cred uuid cred in
          let pub_cred =
            let x = Z.(of_string_base 16 priv_cred mod G.q) in
            let y = G.(g **~ x) in
            G.to_string y
          in
819 820
          let body = Printf.sprintf template_credential title id cred url in
          let subject = "Your credential for election " ^ title in
821
          lwt () = send_email "noreply@belenios.org" id subject body in
822 823 824 825 826
          return @@ S.add pub_cred accu
        ) S.empty se.se_voters
      in
      let creds = S.elements creds in
      let fname = !spool_dir / uuid_s ^ ".public_creds.txt" in
827
      lwt () =
828 829 830 831
          Lwt_io.with_file
            ~flags:(Unix.([O_WRONLY; O_NONBLOCK; O_CREAT; O_TRUNC]))
            ~perm:0o600 ~mode:Lwt_io.Output fname
            (fun oc ->
832
              Lwt_list.iter_s (Lwt_io.write_line oc) creds)
833
      in
834 835 836
      return (fun () ->
        T.generic_page ~title:"Success"
          "Credentials have been generated and mailed!" () >>= Html5.send)))
837

Stephane Glondu's avatar
Stephane Glondu committed
838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865
let () =
  Html5.register
    ~service:election_setup_trustee
    (fun token () ->
     lwt uuid = Ocsipersist.find election_pktokens token in
     lwt se = Ocsipersist.find election_stable uuid in
     T.election_setup_trustee token uuid se ()
    )

let () =
  Any.register
    ~service:election_setup_trustee_post
    (fun token public_key ->
     wrap_handler
       (fun () ->
        lwt uuid = Ocsipersist.find election_pktokens token in
        Lwt_mutex.with_lock
          election_setup_mutex
          (fun () ->
           lwt se = Ocsipersist.find election_stable uuid in
           let pkref = List.assoc token se.se_public_keys in
           let module G = (val Group.of_string se.se_group : GROUP) in
           let pk = trustee_public_key_of_string G.read public_key in
           let module KG = Election.MakeSimpleDistKeyGen (G) (LwtRandom) in
           if not (KG.check pk) then failwith "invalid public key";
           (* we keep pk as a string because of G.t *)
           pkref := public_key;
           Ocsipersist.add election_stable uuid se
866 867 868
          ) >> T.generic_page ~title:"Success"
            "Your key has been received and checked!"
            () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
869 870 871 872 873 874 875
       )
    )

let () =
  Any.register
    ~service:election_setup_create
    (fun uuid () ->
Stephane Glondu's avatar
Stephane Glondu committed
876
     match_lwt Web_auth_state.get_site_user () with
Stephane Glondu's avatar
Stephane Glondu committed
877 878 879
     | None -> forbidden ()
     | Some u ->
        begin try_lwt
880 881 882
          let uuid_s = Uuidm.to_string uuid in
          Lwt_mutex.with_lock election_setup_mutex (fun () ->
            lwt se = Ocsipersist.find election_stable uuid_s in
Stephane Glondu's avatar
Stephane Glondu committed
883 884 885
            if se.se_owner <> u then forbidden () else
            let group = Group.of_string se.se_group in
            let module G = (val group : GROUP) in
886
            let module KG = Election.MakeSimpleDistKeyGen (G) (LwtRandom) in
Stephane Glondu's avatar
Stephane Glondu committed
887
            (* construct election data in memory *)
888
            lwt public_keys, private_key =
Stephane Glondu's avatar
Stephane Glondu committed
889
              match se.se_public_keys with
890 891 892 893 894 895 896 897 898
              | [] ->
                 lwt private_key, public_key = KG.generate_and_prove () in
                 return ([public_key], Some private_key)
              | _ :: _ ->
                 return (List.rev_map
                   (fun (_, r) ->
                     if !r = "" then failwith "some public keys are missing";
                     trustee_public_key_of_string G.read !r
                   ) se.se_public_keys, None)
Stephane Glondu's avatar
Stephane Glondu committed
899 900 901 902 903 904
            in
            let y = KG.combine (Array.of_list public_keys) in
            let template = se.se_questions in
            let params = {
              e_description = template.t_description;
              e_name = template.t_name;
905
              e_public_key = {wpk_group = G.group; wpk_y = y};
Stephane Glondu's avatar
Stephane Glondu committed
906 907 908 909 910 911 912 913 914
              e_questions = template.t_questions;
              e_uuid = uuid;
              e_short_name = template.t_short_name;
            } in
            let files = {
              f_election = !spool_dir / uuid_s ^ ".election.json";
              f_metadata = !spool_dir / uuid_s ^ ".metadata.json";
              f_public_keys = !spool_dir / uuid_s ^ ".public_keys.jsons";
              f_public_creds = !spool_dir / uuid_s ^ ".public_creds.txt";
Stephane Glondu's avatar
Stephane Glondu committed
915
              f_voters = !spool_dir / uuid_s ^ ".voters.txt";
Stephane Glondu's avatar
Stephane Glondu committed
916 917 918 919 920 921
            } in
            lwt _ =
              try_lwt Lwt_unix.stat files.f_public_creds
              with _ -> failwith "public credentials are missing"
            in
            (* write election files to disk *)
922
            let create_file fname what xs =
Stephane Glondu's avatar
Stephane Glondu committed
923 924 925
              Lwt_io.with_file
                ~flags:(Unix.([O_WRONLY; O_NONBLOCK; O_CREAT; O_TRUNC]))
                ~perm:0o600 ~mode:Lwt_io.Output fname
926 927 928 929 930
                (fun oc ->
                  Lwt_list.iter_s
                    (fun v ->
                      Lwt_io.write oc (what v) >>
                      Lwt_io.write oc "\n") xs)
Stephane Glondu's avatar
Stephane Glondu committed
931
            in
932 933 934 935
            create_file files.f_election (string_of_params (write_wrapped_pubkey G.write_group G.write)) [params] >>
            create_file files.f_metadata string_of_metadata [se.se_metadata] >>
            create_file files.f_voters (fun x -> x) se.se_voters >>
            create_file files.f_public_keys (string_of_trustee_public_key G.write) public_keys >>
Stephane Glondu's avatar
Stephane Glondu committed
936 937 938
            (* actually create the election *)
            begin match_lwt import_election files with
            | None ->
939
               T.new_election_failure `Exists () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
940 941 942 943
            | Some w ->
               let module W = (val w : REGISTRABLE_ELECTION) in
               lwt w = W.register () in
               let module W = (val w : WEB_ELECTION) in
944 945 946 947 948 949
               (* create file with private key, if any *)
               lwt () =
                 match private_key with
                 | None -> return ()
                 | Some x ->
                    let fname = W.dir / "private_key.json" in
950
                    create_file fname string_of_number [x]
951
               in
Stephane Glondu's avatar
Stephane Glondu committed
952 953 954 955 956
               (* clean up temporary files *)
               Lwt_unix.unlink files.f_election >>
               Lwt_unix.unlink files.f_metadata >>
               Lwt_unix.unlink files.f_public_keys >>
               Lwt_unix.unlink files.f_public_creds >>
Stephane Glondu's avatar
Stephane Glondu committed
957
               Lwt_unix.unlink files.f_voters >>
Stephane Glondu's avatar
Stephane Glondu committed
958 959 960 961 962 963 964
               (* clean up tokens *)
               Ocsipersist.remove election_credtokens se.se_public_creds >>
               Lwt_list.iter_s
                 (fun (token, _) ->
                  Ocsipersist.remove election_pktokens token)
                 se.se_public_keys >>
               Ocsipersist.remove election_stable uuid_s >>
965
               Web_persist.set_election_date uuid_s (now ()) >>
Stephane Glondu's avatar
Stephane Glondu committed
966 967 968 969 970
               Redirection.send
                 (preapply election_admin (W.election.e_params.e_uuid, ()))
            end
          )
        with e ->
971
          T.new_election_failure (`Exception e) () >>= Html5.send
Stephane Glondu's avatar
Stephane Glondu committed
972 973
        end
    )
974

Stephane Glondu's avatar
Stephane Glondu committed
975 976 977 978
let () =
  Any.register
    ~service:election_home
    (fun (uuid, ()) () ->
979
      let uuid_s = Uuidm.to_string uuid in
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
      try
        let w = SMap.find uuid_s !election_table in
        let module W = (val w : WEB_ELECTION) in
        Eliom_reference.unset Web_services.ballot >>
        let cont () =
          Redirection.send
            (Eliom_service.preapply
               election_home (W.election.e_params.e_uuid, ()))
        in
        Eliom_reference.set Web_auth_state.cont [cont] >>
        match_lwt Eliom_reference.get Web_services.cast_confirmed with
        | Some result ->
           Eliom_reference.unset Web_services.cast_confirmed >>
           T.cast_confirmed (module W) ~result () >>= Html5.send
        | None ->
           lwt state = Web_persist.get_election_state uuid_s in
           T.election_home (module W) state () >>= Html5.send
      with Not_found ->
Stephane Glondu's avatar
Stephane Glondu committed
998
        T.generic_page ~title:"Sorry, this election is not yet open"
999 1000
          "This election does not exist yet. Please come back later." ()
          >>= Html5.send)
1001

Stephane Glondu's avatar
Stephane Glondu committed
1002 1003 1004 1005 1006 1007
let () =
  Any.register
    ~service:election_admin
    (fun (uuid, ()) () ->
     let uuid_s = Uuidm.to_string uuid in
     let w = SMap.find uuid_s !election_table in
Stephane Glondu's avatar
Stephane Glondu committed
1008
     lwt site_user = Web_auth_state.get_site_user () in
1009 1010 1011 1012 1013
     let module W = (val w : WEB_ELECTION) in
     let uuid = Uuidm.to_string W.election.e_params.e_uuid in
     match site_user with
     | Some u when W.metadata.e_owner = Some u ->
        lwt state = Web_persist.get_election_state uuid in
1014
        T.election_admin (module W) state () >>= Html5.send
1015 1016
       | _ -> forbidden ()
    )
1017

1018
let election_set_state state (uuid, ()) () =
Stephane Glondu's avatar
Stephane Glondu committed
1019 1020 1021
     let uuid_s = Uuidm.to_string uuid in
     let w = SMap.find uuid_s !election_table in
     let module W = (val w : WEB_ELECTION) in
1022
     lwt () =
Stephane Glondu's avatar
Stephane Glondu committed
1023
       match_lwt Web_auth_state.get_site_user () with
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
       | Some u when W.metadata.e_owner = Some u -> return ()
       | _ -> forbidden ()
     in
     lwt () =
       match_lwt Web_persist.get_election_state uuid_s with
       | `Open | `Closed -> return ()
       | _ -> forbidden ()
     in
     let state = if state then `Open else `Closed in
     Web_persist.set_election_state uuid_s state >>
1034 1035 1036 1037
     Redirection.send (preapply election_admin (uuid, ()))

let () = Any.register ~service:election_open (election_set_state true)
let () = Any.register ~service:election_close (election_set_state false)
1038

Stephane Glondu's avatar
Stephane Glondu committed
1039 1040 1041 1042 1043 1044
let () =
  Any.register
    ~service:election_update_credential
    (fun (uuid, ()) () ->
     let uuid_s = Uuidm.to_string uuid in
     let w = SMap.find uuid_s !election_table in
Stephane Glondu's avatar
Stephane Glondu committed
1045
     lwt site_user = Web_auth_state.get_site_user () in
1046 1047 1048 1049
     let module W = (val w : WEB_ELECTION) in
     match site_user with
     | Some u ->
        if W.metadata.e_owner = Some u then (
1050
          T.update_credential (module W) () >>= Html5.send
1051 1052 1053 1054
        ) else (
          forbidden ()
        )
     | _ -> forbidden ())
Stephane Glondu's avatar
Stephane Glondu committed
1055 1056 1057 1058

let () =
  Any.register
    ~service:election_update_credential_post
1059
    (fun (uuid, ()) (old, new_) ->
Stephane Glondu's avatar
Stephane Glondu committed
1060 1061
     let uuid_s = Uuidm.to_string uuid in
     let w = SMap.find uuid_s !election_table in
Stephane Glondu's avatar
Stephane Glondu committed
1062
     lwt site_user = Web_auth_state.get_site_user () in
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076
     let module W = (val w : WEB_ELECTION) in
     match site_user with
     | Some u ->
       if W.metadata.e_owner = Some u then (
         try_lwt
           W.B.update_cred ~old ~new_ >>
           String.send ("OK", "text/plain")
         with Error e ->
           String.send ("Error: " ^ explain_error e, "text/plain")
       ) >>= (fun x -> return @@ cast_unknown_content_kind x)
       else (
         forbidden ()
       )
     | _ -> forbidden ())
Stephane Glondu's avatar
Stephane Glondu committed
1077 1078 1079 1080

let () =
  Any.register
    ~service:election_vote
1081
    (fun (uuid, ()) () ->
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
      Eliom_reference.unset Web_services.ballot >>
      Redirection.send
        (Eliom_service.preapply
           (Eliom_service.static_dir_with_params
              ~get_params:(Eliom_parameter.string "election_url") ())
           (["static"; "vote.html"],
            "../elections/" ^ uuid_s ^ "/")))
1092

Stephane Glondu's avatar
Stephane Glondu committed
1093 1094 1095
let () =
  Any.register
    ~service:election_cast
1096
    (fun (uuid, ()) () ->
1097 1098 1099
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
Stephane Glondu's avatar
Stephane Glondu committed
1100
      let cont () =
1101 1102 1103 1104
        Redirection.send
          (Eliom_service.preapply
             election_cast (W.election.e_params.e_uuid, ()))
      in
Stephane Glondu's avatar
Stephane Glondu committed
1105
      Eliom_reference.set Web_auth_state.cont [cont] >>
1106 1107 1108
      match_lwt Eliom_reference.get Web_services.ballot with
      | Some b -> T.cast_confirmation w (sha256_b64 b) () >>= Html5.send
      | None -> T.cast_raw w () >>= Html5.send)
Stephane Glondu's avatar
Stephane Glondu committed
1109 1110 1111 1112

let () =
  Any.register
    ~service:election_cast_post
1113 1114 1115 1116
    (fun (uuid, ()) (ballot_raw, ballot_file) ->
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
Stephane Glondu's avatar
Stephane Glondu committed
1117
      lwt user = Web_auth_state.get_election_user uuid in
1118 1119 1120 1121 1122 1123 1124
      lwt the_ballot = match ballot_raw, ballot_file with
        | Some ballot, None -> return ballot
        | None, Some fi ->
           let fname = fi.Ocsigen_extensions.tmp_filename in
           Lwt_stream.to_string (Lwt_io.chars_of_file fname)
        | _, _ -> fail_http 400
      in
Stephane Glondu's avatar
Stephane Glondu committed
1125
      let cont () =
1126 1127 1128 1129
        Redirection.send
          (Eliom_service.preapply
             Web_services.election_cast (W.election.e_params.e_uuid, ()))
      in
Stephane Glondu's avatar
Stephane Glondu committed
1130
      Eliom_reference.set Web_auth_state.cont [cont] >>
1131 1132 1133 1134 1135 1136 1137
      Eliom_reference.set Web_services.ballot (Some the_ballot) >>
      match user with
      | None ->
         Redirection.send
           (Eliom_service.preapply
              Web_services.election_login
              ((W.election.e_params.e_uuid, ()), None))
Stephane Glondu's avatar
Stephane Glondu committed
1138
      | Some u -> cont ())
1139

Stephane Glondu's avatar
Stephane Glondu committed
1140 1141 1142
let () =
  Any.register
    ~service:election_cast_confirm
1143
    (fun (uuid, ()) () ->
1144 1145 1146 1147 1148 1149 1150
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
      match_lwt Eliom_reference.get Web_services.ballot with
      | Some the_ballot ->
         begin
           Eliom_reference.unset Web_services.ballot >>
Stephane Glondu's avatar
Stephane Glondu committed
1151
           match_lwt Web_auth_state.get_election_user uuid with
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166
           | Some u ->
              let record = string_of_user u, now () in
              lwt result =
                try_lwt
                  lwt hash = W.B.cast the_ballot record in
                  return (`Valid hash)
                with Error e -> return (`Error e)
              in
              Eliom_reference.set Web_services.cast_confirmed (Some result) >>
              Redirection.send
                (Eliom_service.preapply
                   election_home (W.election.e_params.e_uuid, ()))
           | None -> forbidden ()
         end
      | None -> fail_http 404)
1167

1168 1169 1170 1171
let () =
  Any.register
    ~service:election_pretty_ballots
    (fun ((uuid, ()), start) () ->
1172 1173 1174 1175 1176 1177
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
      lwt res, _ =
        W.B.Ballots.fold
          (fun h _ (accu, i) ->
1178
            if i >= start && i < start+1000 then
1179 1180
              return (h :: accu, i+1)
            else return (accu, i+1)
1181 1182
          ) ([], 1)
      in T.pretty_ballots (module W) res () >>= Html5.send)
1183 1184 1185 1186 1187

let () =
  Any.register
    ~service:election_pretty_ballot
    (fun ((uuid, ()), hash) () ->
1188 1189 1190 1191 1192 1193
      let uuid_s = Uuidm.to_string uuid in
      let w = SMap.find uuid_s !election_table in
      let module W = (val w : WEB_ELECTION) in
      lwt ballot =
        W.B.Ballots.fold
          (fun h b accu ->
1194
            if h = hash then return (Some b) else return accu
1195 1196 1197 1198 1199 1200