modules/erl/euphorik_protocole.erl

   1 % coding: utf-8
   2 % Copyright 2008 Grégory Burri
   3 %
   4 % This file is part of Euphorik.
   5 %
   6 % Euphorik 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 3 of the License, or
   9 % (at your option) any later version.
  10 %
  11 % Euphorik 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.
  15 %
  16 % You should have received a copy of the GNU General Public License
  17 % along with Euphorik.  If not, see <http://www.gnu.org/licenses/>.
  18 %
  19 % Ce module gére les différents messages envoyés par le client (javascript) via AJAX.
  20 % Les messages donnés ainsi que les réponses sont au format JSON.
  21 % @author G.Burri
  22
  23
  24 -module(euphorik_protocole).
  25 -export([
  26    register/2,
  27    login/2,
  28    logout/1,
  29    profile/1,
  30    wait_event/1,
  31    put_message/1,
  32    ban/1,
  33    slap/1,
  34    put_troll/1,
  35    mod_troll/1,
  36    del_troll/1,
  37    unban_ip/1,
  38    list_banned_ips/1,
  39    erreur/1
  40 ]).
  41 -include("../include/euphorik_bd.hrl").
  42 -include("../include/euphorik_defines.hrl").
  43
  44
  45 % Une utilisateur s'enregistre avec un tuple {Login, Password}.
  46 register([{login, Login}, {password, Password}], IP) ->
  47    Can_register = euphorik_bd:can_register(IP),
  48    if Can_register ->
  49          case euphorik_bd:user_by_login(Login) of
  50             {ok, _} ->
  51                erreur("Login déjà existant");
  52             _ ->
  53                User = euphorik_bd:nouveau_user(Login, Password, generer_cookie()),
  54                euphorik_bd:update_ip(User#user.id, IP),
  55                json_reponse_login_ok(User)
  56          end;
  57       true ->
  58          erreur_register_flood()
  59    end;
  60 % Enregistrement sans {Login, Password}
  61 register([], IP) ->
  62    Can_register = euphorik_bd:can_register(IP),
  63    if Can_register ->
  64          User = euphorik_bd:nouveau_user("<nick>", generer_cookie()),
  65          euphorik_bd:update_ip(User#user.id, IP),
  66          json_reponse_login_ok(User);
  67       true ->
  68          erreur_register_flood()
  69    end.
  70
  71 erreur_register_flood() ->
  72    erreur("Trop de register (flood)").
  73
  74
  75 % Un utilisateur se logge (avec un couple {login, mot de passe})
  76 login([{login, Login}, {password, Password}], IP) ->
  77    loginUser(euphorik_bd:user_by_login_password(Login, Password), IP);
  78 % Un utilisateur se logge (avec un cookie)
  79 login([{cookie, Cookie}], IP) ->
  80    loginUser(euphorik_bd:user_by_cookie(Cookie), IP).
  81
  82 loginUser({ok, User}, IP) ->
  83    euphorik_bd:update_ip(User#user.id, IP),
  84    euphorik_bd:update_date_derniere_connexion(User#user.id),
  85    json_reponse_login_ok(User);
  86 loginUser(_, _) ->
  87    % ajoute un délais d'attente
  88    timer:sleep(?TEMPS_ATTENTE_ERREUR_LOGIN),
  89    erreur("Couple login/pass introuvable").
  90
  91
  92 % Renvoie un string() représentant un cookie en base 36. Il y a 10^32 possibillités.
  93 generer_cookie() ->
  94    {A1, A2, A3} = now(),
  95    random:seed(A1, A2, A3),
  96    erlang:integer_to_list(random:uniform(math:pow(10, 32)), 36).
  97
  98
  99 % Un utilisateur se délogge.
 100 logout(_) ->
 101    do_nothing.
 102
 103
 104 % Modification du profile.
 105 profile(
 106    [
 107       {cookie, Cookie},
 108       {login, Login},
 109       {password, Password},
 110       {nick, Pseudo},
 111       {email, Email},
 112       {css, Css},
 113       {nick_format, Nick_format_str},
 114       {view_times, View_times},
 115       {view_tooltips, View_tooltips},
 116       {conversations, {array, Conversations_json}}
 117    ]
 118 ) ->
 119    % virage des messages qui n'existent pas
 120    Conversations = lists:dropwhile(
 121       fun(Message_id) ->
 122          not euphorik_bd:message_existe(Message_id)
 123       end,
 124       Conversations_json
 125    ),
 126    %  TODO : pas très beau, mieux vaut construire un #user
 127    case euphorik_bd:set_profile(
 128          Cookie,
 129          Login,
 130          Password,
 131          Pseudo,
 132          Email,
 133          Css,
 134          list_to_atom(Nick_format_str),
 135          View_times,
 136          View_tooltips,
 137          Conversations) of
 138       ok ->
 139          json_reponse_ok();
 140       login_deja_pris ->
 141          erreur("Login déjà pris");
 142       _ ->
 143          erreur("Impossible de mettre à jour le profile")
 144    end.
 145
 146
 147 % Renvoie les messages appropriés.
 148 % last_message id et cookie sont facultatifs
 149 wait_event([{page, "chat"} | Data]) ->
 150    % traitement des inputs
 151    Cookie = case lists:keysearch(cookie, 1, Data) of {value, {_, C}} -> C; _ -> inconnu end,
 152    Last_message_id = case lists:keysearch(last_message_id, 1, Data) of {value, {_, Id}} -> Id; _ -> 0 end,
 153    {value, {_, Message_count}} = lists:keysearch(message_count, 1, Data),
 154    Main_page = case lists:keysearch(main_page, 1, Data) of {value, {_, P}} -> P; _ -> 1 end,
 155    Troll_id = case lists:keysearch(troll_id, 1, Data) of {value, {_, T}} -> T; _ -> 0 end,
 156    {value, {_, {array, Conversations_json}}} = lists:keysearch(conversations, 1, Data),
 157    Racines_conversations = lists:map(
 158       fun({struct, [{root, Racine}, {page, Page} | Reste]}) ->
 159          Last_mess_conv  = case Reste of [{last_message_id, L}] -> L; _ -> 0 end,
 160          {Racine, Page, Last_mess_conv}
 161       end,
 162       Conversations_json
 163    ),
 164    User = case euphorik_bd:user_by_cookie(Cookie) of
 165       {ok, U} -> U;
 166       _ -> inconnu
 167    end,
 168    case {mnesia:subscribe({table, minichat, detailed}), mnesia:subscribe({table, troll, detailed})} of
 169       {{error, E}, _} -> E;
 170       {_, {error, E}} -> E;
 171       _ ->
 172          % attente d'événements
 173          R = wait_event_page_chat(User, Racines_conversations, Message_count, Last_message_id, Main_page, Troll_id),
 174          mnesia:unsubscribe({table, minichat, detailed}),
 175          mnesia:unsubscribe({table, troll, detailed}),
 176          R
 177    end;
 178 wait_event([{page, "admin"}, {last_troll, Last_troll}]) ->
 179    case wait_event_page_admin(Last_troll) of
 180       banned_ips_refresh ->
 181          {struct,
 182             [
 183                {reply, "banned_ips_refresh"}
 184             ]
 185          };
 186       {mod, Troll} ->
 187          {struct,
 188             [
 189                {reply, "troll_modified"},
 190                {troll_id, Troll#troll.id},
 191                {content, Troll#troll.content}
 192             ]
 193          };
 194       {add, Trolls} ->
 195          {struct,
 196             [
 197                {reply, "troll_added"},
 198                {trolls, {array,
 199                   lists:map(
 200                      fun(T) ->
 201                         {ok, User} = euphorik_bd:user_by_id(T#troll.id_user),
 202                         {struct,
 203                            [
 204                               {troll_id, T#troll.id},
 205                               {content, T#troll.content},
 206                               {author, User#user.pseudo},
 207                               {author_id, User#user.id}
 208                            ]
 209                         }
 210                      end,
 211                      Trolls
 212                   )
 213                }}
 214             ]
 215          };
 216       {del, Troll_id} ->
 217          {struct,
 218             [
 219                {reply, "troll_deleted"},
 220                {troll_id, Troll_id}
 221             ]
 222          };
 223       _ ->
 224          erreur("timeout")
 225    end;
 226 wait_event(_) ->
 227    erreur("Page inconnue").
 228
 229
 230 wait_event_page_chat(User, Racines_conversations, Message_count, Last_message_id, Main_page, Troll_id) ->
 231    % est-ce que le troll est à jour ?
 232    case euphorik_bd:current_troll() of
 233       Current when is_record(Current, troll), Current#troll.id =/= Troll_id ->
 234          {struct, [
 235             {reply, "new_troll"},
 236             {troll_id, Current#troll.id},
 237             {message_id, euphorik_bd:message_id_associe(Current#troll.id)},
 238             {content, Current#troll.content}
 239          ]};
 240       _ ->
 241          % est-ce qu'il y a des nouveaux messages ?
 242          case euphorik_minichat_conversation:conversations(Racines_conversations, Message_count, Last_message_id, Main_page) of
 243             vide ->
 244                wait_event_bd_page_chat(),
 245                wait_event_page_chat(User, Racines_conversations, Message_count, Last_message_id, Main_page, Troll_id);
 246             Conversations ->
 247                % accrochez-vous ca va siouxer ;)
 248                {struct, [
 249                   {reply, "new_messages"},
 250                   {conversations, {array,
 251                      lists:map(
 252                         fun({Conv, Plus}) ->
 253                            {struct, [
 254                               {last_page, not Plus},
 255                               {messages, {array,
 256                                  lists:map(
 257                                     fun({Mess, Repond_a}) ->
 258                                        Est_proprietaire = User =/= inconnu andalso User#user.id =:= Mess#minichat.auteur_id,
 259                                        A_repondu_a_message = User =/= inconnu andalso euphorik_bd:a_repondu_a_message(User#user.id, Mess#minichat.id),
 260                                        Est_une_reponse_a_user = User =/= inconnu andalso euphorik_bd:est_une_reponse_a_user(User#user.id, Mess#minichat.id),
 261                                        {ok, User_mess } = euphorik_bd:user_by_id(Mess#minichat.auteur_id),
 262                                        {struct, [
 263                                           {id, Mess#minichat.id},
 264                                           {user_id, User_mess#user.id},
 265                                           {date, format_date(Mess#minichat.date)},
 266                                           {system, Mess#minichat.auteur_id =:= 0},
 267                                           {owner, Est_proprietaire},
 268                                           {answered, A_repondu_a_message},
 269                                           {is_a_reply, Est_une_reponse_a_user},
 270                                           {nick, Mess#minichat.pseudo},
 271                                           {login, User_mess#user.login},
 272                                           {content, Mess#minichat.contenu},
 273                                           {root, Mess#minichat.racine_id},
 274                                           {answer_to, {array, lists:map(
 275                                              fun(Id_mess) ->
 276                                                 {ok, M} = euphorik_bd:message_by_id(Id_mess),
 277                                                 {ok, User_reponse} = euphorik_bd:user_by_mess(M#minichat.id),
 278                                                 {struct, [{id, M#minichat.id}, {nick, M#minichat.pseudo}, {login, User_reponse#user.login}]}
 279                                              end,
 280                                              Repond_a
 281                                           )}},
 282                                           {ek_master, User_mess#user.ek_master}
 283                                        ]}
 284                                     end,
 285                                     Conv
 286                                  )
 287                               }}
 288                            ]}
 289                         end,
 290                         Conversations
 291                      )
 292                   }}
 293                ]}
 294          end
 295    end.
 296
 297
 298 % Attend un événement lié à la page 'chat'.
 299 wait_event_bd_page_chat() ->
 300    receive % attente d'un post
 301       {mnesia_table_event, {write, minichat, _Message, [], _}} ->
 302          ok;
 303       {mnesia_table_event, {write, troll, Troll, [Old_troll | _], _}} when Troll#troll.date_post =/= undefined, Old_troll#troll.date_post == undefined ->
 304          ok;
 305       {tcp_closed, _} ->
 306          exit(normal);
 307       _ ->
 308          wait_event_bd_page_chat()
 309    % 60 minutes de timeout (on ne sais jamais)
 310    % Après 60 minutes de connexion, le client doit donc reétablir une connexion
 311    after 1000 * 60 * 60 ->
 312       timeout
 313    end.
 314
 315
 316 % Attent un événement concernant la page admin
 317 % Renvoie les trolls manquants posté après Last_id ou banned_ips_refresh.
 318 % Si pas de trolls alors attend un événement tel qu'un ajout, une modification ou une suppression.
 319 % renvoie :
 320 %  {mod, Troll}
 321 % ou {add, [Trolls]}
 322 % ou {del, Troll_id}
 323 % ou banned_ips_refresh
 324 % ou timeout
 325 wait_event_page_admin(Last_id) ->
 326    case {mnesia:subscribe({table, troll, detailed}), mnesia:subscribe({table, ip_table, detailed})} of
 327       {{error, E}, _ } -> E;
 328       {_, {error, E}} -> E;
 329       _ ->
 330          R = case euphorik_bd:trolls(Last_id) of
 331                [] -> % pas de trolls
 332                   wait_event_page_admin();
 333                Trolls ->
 334                   {add, Trolls}
 335          end,
 336          mnesia:unsubscribe({table, troll, detailed}),
 337          mnesia:unsubscribe({table, ip_table, detailed}),
 338          R
 339    end.
 340
 341 wait_event_page_admin() ->
 342    % s'il n'y a pas de trolls que l'utilisateur n'a pas connaissance alors on attend un événement
 343    receive
 344       % cas où un troll est choisit comme courant
 345       {mnesia_table_event, {write, troll, Troll, [Old_troll | _], _}}
 346          when Old_troll#troll.date_post =:= undefined, Troll#troll.date_post =/= undefined ->
 347          {del, Troll#troll.id};
 348       {mnesia_table_event, {write, troll, Troll, [_Old_troll | _], _}} ->
 349          {mod, Troll};
 350       {mnesia_table_event, {write, troll, Troll, [], _}} ->
 351          {add, [Troll]};
 352       {mnesia_table_event, {delete, troll, {troll, Id}, _, _}} ->
 353          {del, Id};
 354       {mnesia_table_event, {write, ip_table, IP, [Old_IP | _], _}}
 355          when Old_IP#ip_table.ban =/= IP#ip_table.ban; Old_IP#ip_table.ban_duration =/= IP#ip_table.ban_duration ->
 356          banned_ips_refresh;
 357       {tcp_closed, _} ->
 358          exit(normal);
 359       _ ->
 360          wait_event_page_admin()
 361    % 60 minutes de timeout (on ne sais jamais)
 362    % Après 60 minutes de connexion, le client doit donc reétablir une connexion
 363    after 1000 * 60 * 60 ->
 364       timeout
 365    end.
 366
 367
 368 % Un utilisateur envoie un message
 369 put_message(
 370    [
 371       {cookie, Cookie},
 372       {nick, Nick},
 373       {content, Content},
 374       {answer_to, {array, Answer_to}}
 375    ]
 376 ) ->
 377    case euphorik_bd:user_by_cookie(Cookie) of
 378       {ok, User} ->
 379          case euphorik_bd:est_banni(User#user.id) of
 380             {true, Temps_restant} ->
 381                erreur("Vous êtes banni pour encore " ++ format_minutes(Temps_restant));
 382             _ ->
 383                Strip_content = string:strip(Content),
 384                if Strip_content =:= [] ->
 385                      erreur("Message vide");
 386                   true ->
 387                      % attention : non-atomique (update_pseudo+nouveau_message)
 388                      euphorik_bd:update_pseudo_user(User#user.id, Nick),
 389                      case euphorik_bd:nouveau_message(Strip_content, User#user.id, Answer_to) of
 390                         {erreur, R} -> erreur("Impossible d'ajouter un nouveau message. Raison : " ++ R);
 391                         _ ->
 392                            json_reponse_ok()
 393                      end
 394                end
 395          end;
 396    _ ->
 397       erreur("Utilisateur inconnu")
 398    end.
 399
 400
 401 % bannissement d'un utilisateur (son ip est bannie)
 402 ban(
 403    [
 404       {cookie, Cookie},
 405       {duration, Duration},
 406       {user_id, User_id},
 407       {reason, Reason}
 408    ]) ->
 409       % controle que l'utilisateur est un admin
 410       case euphorik_bd:user_by_cookie(Cookie) of
 411          {ok, User1 = #user{ek_master = true}} ->
 412             case euphorik_bd:user_by_id(User_id) of
 413                {ok, User1} ->
 414                   erreur("Il n'est pas possible de s'auto bannir");
 415                {ok, User2 = #user{ek_master = false}} ->
 416                   euphorik_bd:ban(User2#user.last_ip, Duration),
 417                   euphorik_bd:nouveau_message_sys(lists:flatten(io_lib:format("''~s~s'' est ~s pour ~s.~s",
 418                      [
 419                         User2#user.pseudo,
 420                         if User2#user.login =:= [] -> ""; true -> " (" ++ User2#user.login ++ ")" end,
 421                         if Duration =< 15 -> "kické"; true -> "banni" end,
 422                         format_minutes(Duration),
 423                         if Reason =/= [] -> " - Raison: " ++ Reason; true -> "" end ++ "."
 424                      ]
 425                   ))),
 426                   json_reponse_ok();
 427                {ok, _} ->
 428                   erreur("L'utilisateur est lui même un ekMaster");
 429                _ ->
 430                   erreur("Utilisateur à bannir inconnu")
 431             end;
 432          _ ->
 433             erreur("Utilisateur inconnu ou non ek master")
 434       end.
 435
 436
 437 % slapage d'un user (avertissement)
 438 slap(
 439    [
 440       {cookie, Cookie},
 441       {user_id, User_id},
 442       {reason, Reason}
 443    ]) ->
 444       % controle que l'utilisateur est un admin
 445       case euphorik_bd:user_by_cookie(Cookie) of
 446          {ok, User1 = #user{ek_master = true}} ->
 447             case euphorik_bd:user_by_id(User_id) of
 448                {ok, User1} ->
 449                   euphorik_bd:nouveau_message_sys(lists:flatten(io_lib:format("~s s'auto slap~s.",
 450                      [
 451                         User1#user.pseudo,
 452                         if Reason =/= [] -> " - Raison: " ++ Reason; true -> "" end
 453                      ]
 454                   ))),
 455                   json_reponse_ok();
 456                {ok, User2 = #user{ek_master = false}} ->
 457                   euphorik_bd:nouveau_message_sys(lists:flatten(io_lib:format("~s se fait slaper par ~s.~s",
 458                      [
 459                         User2#user.pseudo,
 460                         User1#user.pseudo,
 461                         if Reason =/= [] -> " - Raison: " ++ Reason; true -> "" end ++ "."
 462                      ]
 463                   ))),
 464                   json_reponse_ok();
 465                {ok, _} ->
 466                   erreur("L'utilisateur est lui même un ekMaster");
 467                _ ->
 468                   erreur("Utilisateur à slaper inconnu")
 469             end;
 470          _ ->
 471             erreur("Utilisateur inconnu ou non ek master")
 472       end.
 473
 474
 475 put_troll(
 476    [
 477       {cookie, Cookie},
 478       {content, Content}
 479    ]
 480 ) ->
 481    % controle que l'utilisateur est un admin
 482    case euphorik_bd:user_by_cookie(Cookie) of
 483       {ok, User = #user{ek_master = true}} ->
 484          case euphorik_bd:put_troll(User#user.id, Content) of
 485             max_troll_reached_per_user ->
 486                erreur(lists:flatten(io_lib:format("Le nombre de troll maximum par utilisateur est atteint : ~w ", [?NB_MAX_TROLL_WAITING_BY_USER])));
 487             max_troll_reached ->
 488                erreur(lists:flatten(io_lib:format("Le nombre de troll maximum en attente est atteint : ~w ", [?NB_MAX_TROLL_WAITING])));
 489             _Id ->
 490                json_reponse_ok()
 491          end;
 492       _ ->
 493          erreur("Seul les ekMaster peuvent proposer des trolls")
 494    end.
 495
 496
 497 mod_troll(
 498    [
 499       {cookie, Cookie},
 500       {troll_id, Troll_id},
 501       {content, Content}
 502    ]
 503 ) ->
 504    % controle que l'utilisateur est un admin
 505    case euphorik_bd:user_by_cookie(Cookie) of
 506       {ok, User = #user{ek_master = true}} ->
 507          User_id = User#user.id,
 508          case euphorik_bd:troll_by_id(Troll_id) of
 509             {ok, #troll{id_user = User_id}} ->
 510                euphorik_bd:mod_troll(Troll_id, Content),
 511                json_reponse_ok();
 512             _ ->
 513                erreur("Vous ne posséder pas ce troll")
 514          end;
 515       _ ->
 516          erreur("Seul les ekMaster peuvent proposer des trolls")
 517       end.
 518
 519
 520 del_troll(
 521    [
 522       {cookie, Cookie},
 523       {troll_id, Troll_id}
 524    ]
 525 ) ->
 526    % controle que l'utilisateur est un admin
 527    case euphorik_bd:user_by_cookie(Cookie) of
 528       {ok, User = #user{ek_master = true}} ->
 529          User_id = User#user.id,
 530          case euphorik_bd:troll_by_id(Troll_id) of
 531             {ok, #troll{id_user = User_id}} ->
 532                euphorik_bd:del_troll(Troll_id),
 533                json_reponse_ok();
 534             _ ->
 535                erreur("Vous ne posséder pas ce troll")
 536          end;
 537       _ ->
 538          erreur("Seul les ekMaster peuvent proposer des trolls")
 539    end.
 540
 541
 542 unban_ip(
 543    [
 544       {cookie, Cookie},
 545       {ip, IP}
 546    ]
 547 ) ->
 548    case euphorik_bd:user_by_cookie(Cookie) of
 549       {ok, #user{ek_master = true}} ->
 550          euphorik_bd:deban(euphorik_common:unserialize_ip(IP)),
 551          json_reponse_ok();
 552       _ ->
 553          erreur("Seul les ekMaster peuvent connaitre la liste des ips bannies")
 554    end.
 555
 556
 557 list_banned_ips(
 558    [
 559       {cookie, Cookie}
 560    ]
 561 ) ->
 562    case euphorik_bd:user_by_cookie(Cookie) of
 563       {ok, #user{ek_master = true}} ->
 564          {
 565             struct,
 566             [
 567                {reply, "list_banned_ips"},
 568                {list, {array, lists:map(
 569                   fun({IP, T, Users}) ->
 570                      {struct,
 571                         [
 572                            {ip, euphorik_common:serialize_ip(IP)},
 573                            {remaining_time, format_minutes(T)},
 574                            {users, {array, lists:map(
 575                               fun({Pseudo, Login}) ->
 576                                  {struct,
 577                                     [
 578                                        {nick, Pseudo},
 579                                        {login, Login}
 580                                     ]
 581                                  }
 582                               end,
 583                               Users
 584                            )}}
 585                         ]
 586                      }
 587                   end,
 588                   euphorik_bd:list_ban()
 589                )}}
 590             ]
 591          };
 592       _ ->
 593          erreur("Seul les ekMaster peuvent connaitre la liste des ips bannies")
 594    end.
 595
 596
 597 % Construit une erreur
 598 erreur(Message) ->
 599    {
 600       struct, [
 601          {reply, "error"},
 602          {error_message, Message}
 603       ]
 604    }.
 605
 606
 607 % Formatage de minutes.
 608 % par exemple : "1min", "45min", "1h23min", "1jour 2h34min"
 609 format_minutes(Min) ->
 610    Jours = Min div (60 * 24),
 611    Heures = Min rem (60 * 24) div 60,
 612    Minutes = Min rem (60),
 613    if Jours =/= 0 -> integer_to_list(Jours) ++ " Jour" ++ if Jours > 1 -> "s"; true -> "" end ++ " "; true -> "" end ++
 614    if Heures =/= 0 -> integer_to_list(Heures) ++ " heure"  ++ if Heures > 1 -> "s"; true -> "" end; true -> "" end ++
 615    if Minutes == 0 ->
 616          "";
 617       true ->
 618          " " ++ integer_to_list(Minutes) ++ " minute"  ++ if Minutes > 1 -> "s"; true -> "" end
 619    end.
 620
 621
 622 % Formatage d'une heure
 623 % local_time() -> string
 624 format_date(Date) ->
 625    DateLocal = calendar:now_to_local_time(Date),
 626    DateNowLocal = calendar:local_time(),
 627    {{Annee, Mois, Jour}, {Heure, Minute, Seconde}} = DateLocal,
 628    {{AnneeNow, _, _}, {_, _, _}} = DateNowLocal,
 629    Hier = calendar:date_to_gregorian_days(element(1, DateLocal)) =:=  calendar:date_to_gregorian_days(element(1, DateNowLocal)) - 1,
 630    lists:flatten(
 631       if element(1, DateLocal) =:= element(1, DateNowLocal) ->
 632          "";
 633          Hier ->
 634             "Hier ";
 635          Annee =:= AnneeNow ->
 636             io_lib:format("~2.10.0B/~2.10.0B ", [Jour, Mois]);
 637          true ->
 638             io_lib:format("~2.10.0B/~2.10.0B/~B ", [Jour, Mois, Annee])
 639       end ++
 640       io_lib:format("~2.10.0B:~2.10.0B:~2.10.0B", [Heure, Minute, Seconde])
 641    ).
 642
 643
 644 json_reponse_ok() ->
 645    {struct, [{reply, "ok"}]}.
 646
 647
 648 json_reponse_login_ok(User) ->
 649    {
 650       struct, [
 651          {reply, "login"},
 652          {status, if (User#user.password =/= []) and (User#user.login =/= []) -> "auth_registered"; true -> "auth_not_registered" end},
 653          {cookie, User#user.cookie},
 654          {id, User#user.id},
 655          {nick, User#user.pseudo},
 656          {login, User#user.login},
 657          {email, User#user.email},
 658          {css, User#user.css},
 659          {nick_format, atom_to_list(User#user.nick_format)},
 660          {view_times, User#user.view_times},
 661          {view_tooltips, User#user.view_tooltips},
 662          {conversations, {array, User#user.conversations } },
 663          {ek_master, User#user.ek_master}
 664       ]
 665    }.