summaryrefslogtreecommitdiff
path: root/src/bridge/bridge.cpp
blob: 589bd03225fe94f7988cbdb5df2918bcfab05aea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
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
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
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
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
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
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
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
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
#include <bridge/bridge.hpp>
#include <utility>
#include <xmpp/biboumi_component.hpp>
#include <network/poller.hpp>
#include <utils/empty_if_fixed_server.hpp>
#include <utils/encoding.hpp>
#include <utils/tolower.hpp>
#include <logger/logger.hpp>
#include <utils/revstr.hpp>
#include <utils/split.hpp>
#include <xmpp/jid.hpp>
#include <database/database.hpp>
#include "result_set_management.hpp"
#include <algorithm>
#include <utils/timed_events.hpp>

using namespace std::string_literals;

static const char* action_prefix = "\01ACTION ";


static std::string in_encoding_for(const Bridge& bridge, const Iid& iid)
{
#ifdef USE_DATABASE
  const auto jid = bridge.get_bare_jid();
  auto options = Database::get_irc_channel_options_with_server_default(jid, iid.get_server(), iid.get_local());
  return options.encodingIn.value();
#else
  return {"ISO-8859-1"};
#endif
}

Bridge::Bridge(std::string user_jid, BiboumiComponent& xmpp, std::shared_ptr<Poller>& poller):
  user_jid(std::move(user_jid)),
  xmpp(xmpp),
  poller(poller)
{
#ifdef USE_DATABASE
  const auto options = Database::get_global_options(this->user_jid);
  this->set_record_history(options.recordHistory.value());
#endif
}

/**
 * Return the role and affiliation, corresponding to the given irc mode
 */
static std::tuple<std::string, std::string> get_role_affiliation_from_irc_mode(const char mode)
{
  if (mode == 'a' || mode == 'q'){
    return std::make_tuple("moderator", "owner");}
  else if (mode == 'o')
    return std::make_tuple("moderator", "admin");
  else if (mode == 'h')
    return std::make_tuple("moderator", "member");
  else if (mode == 'v')
    return std::make_tuple("participant", "member");
  else
    return std::make_tuple("participant", "none");
}

void Bridge::shutdown(const std::string& exit_message)
{
  for (auto& pair: this->irc_clients)
  {
    pair.second->send_quit_command(exit_message);
    pair.second->leave_dummy_channel(exit_message, {});
  }
}

void Bridge::remove_resource(const std::string& resource,
                             const std::string& part_message)
{
  const auto resources_in_chan_copy = this->resources_in_chan;
  for (const auto& chan_pair: resources_in_chan_copy)
  {
    const ChannelKey& channel_key = chan_pair.first;
    const std::set<Resource>& resources = chan_pair.second;
    if (resources.count(resource))
      this->leave_irc_channel({std::get<0>(channel_key), std::get<1>(channel_key), {}},
                              part_message, resource);
  }
}

void Bridge::clean()
{
  auto it = this->irc_clients.begin();
  while (it != this->irc_clients.end())
  {
    IrcClient* client = it->second.get();
    if (!client->is_connected() && !client->is_connecting() &&
        !client->get_resolver().is_resolving())
      it = this->irc_clients.erase(it);
    else
      ++it;
  }
}

const std::string& Bridge::get_jid() const
{
  return this->user_jid;
}

std::string Bridge::get_bare_jid() const
{
  Jid jid(this->user_jid);
  return jid.local + "@" + jid.domain;
}

Xmpp::body Bridge::make_xmpp_body(const std::string& str, const std::string& encoding)
{
  std::string res;
  if (utils::is_valid_utf8(str.c_str()))
    res = str;
  else
    res = utils::convert_to_utf8(str, encoding.data());
  return irc_format_to_xhtmlim(res);
}

IrcClient* Bridge::make_irc_client(const std::string& hostname, const std::string& nickname)
{
  try
    {
      return this->irc_clients.at(hostname).get();
    }
  catch (const std::out_of_range& exception)
    {
      auto username = nickname;
      auto realname = nickname;
      Jid jid(this->user_jid);
      if (Config::get("realname_from_jid", "false") == "true")
        {
          username = jid.local;
          realname = this->get_bare_jid();
        }
      this->irc_clients.emplace(hostname,
                                std::make_shared<IrcClient>(this->poller, hostname,
                                                            nickname, username,
                                                            realname, jid.domain,
                                                            *this));
      std::shared_ptr<IrcClient> irc = this->irc_clients.at(hostname);
      return irc.get();
    }
}

IrcClient* Bridge::get_irc_client(const std::string& hostname)
{
  try
    {
      return this->irc_clients.at(hostname).get();
    }
  catch (const std::out_of_range& exception)
    {
      throw IRCNotConnected(hostname);
    }
}

IrcClient* Bridge::find_irc_client(const std::string& hostname) const
{
  try
    {
      return this->irc_clients.at(hostname).get();
    }
  catch (const std::out_of_range& exception)
    {
      return nullptr;
    }
}

bool Bridge::join_irc_channel(const Iid& iid, const std::string& nickname, const std::string& password,
                              const std::string& resource)
{
  const auto& hostname = iid.get_server();
  this->cancel_linger_timer(hostname);
  IrcClient* irc = this->make_irc_client(hostname, nickname);
  this->add_resource_to_server(hostname, resource);
  auto res_in_chan = this->is_resource_in_chan(ChannelKey{iid.get_local(), hostname}, resource);
  if (!res_in_chan)
    this->add_resource_to_chan(ChannelKey{iid.get_local(), hostname}, resource);
  if (iid.get_local().empty())
    { // Join the dummy channel
      if (irc->is_welcomed())
        {
          if (res_in_chan)
            return false;
          // Immediately simulate a message coming from the IRC server saying that we
          // joined the channel
          if (irc->get_dummy_channel().joined)
            {
              this->generate_channel_join_for_resource(iid, resource);
            }
          else
            {
              const IrcMessage join_message(irc->get_nick(), "JOIN", {""});
              irc->on_channel_join(join_message);
              const IrcMessage end_join_message(std::string(iid.get_server()), "366",
                                                {irc->get_nick(),
                                                 "", "End of NAMES list"});
              irc->on_channel_completely_joined(end_join_message);
            }
        }
      else
        {
          irc->get_dummy_channel().joining = true;
          irc->start();
        }
      return true;
    }
  if (irc->is_channel_joined(iid.get_local()) == false)
    {
      irc->send_join_command(iid.get_local(), password);
      return true;
    } else if (!res_in_chan) {
      this->generate_channel_join_for_resource(iid, resource);
    }
  return false;
}

void Bridge::send_channel_message(const Iid& iid, const std::string& body)
{
  if (iid.get_server().empty())
    {
      for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
        this->xmpp.send_stanza_error("message", this->user_jid + "/" + resource, std::to_string(iid), "",
                                     "cancel", "remote-server-not-found",
                                     std::to_string(iid) + " is not a valid channel name. "
                                         "A correct room jid is of the form: #<chan>%<server>",
                                     false);
      return;
    }
  IrcClient* irc = this->get_irc_client(iid.get_server());

  // Because an IRC message cannot contain \n, we need to convert each line
  // of text into a separate IRC message. For conveniance, we also cut the
  // message into submessages on the XMPP side, this way the user of the
  // gateway sees what was actually sent over IRC.  For example if an user
  // sends “hello\n/me waves”, two messages will be generated: “hello” and
  // “/me waves”. Note that the “command” handling (messages starting with
  // /me, /mode, etc) is done for each message generated this way. In the
  // above example, the /me will be interpreted.
  std::vector<std::string> lines = utils::split(body, '\n', true);
  if (lines.empty())
    return ;
  for (const std::string& line: lines)
    {
      if (line.substr(0, 5) == "/mode")
        {
          std::vector<std::string> args = utils::split(line.substr(5), ' ', false);
          irc->send_mode_command(iid.get_local(), args);
          continue;             // We do not want to send that back to the
                                // XMPP user, that’s not a textual message.
        }
      else if (line.substr(0, 4) == "/me ")
        irc->send_channel_message(iid.get_local(), action_prefix + line.substr(4) + "\01");
      else
        irc->send_channel_message(iid.get_local(), line);

      std::string uuid;
#ifdef USE_DATABASE
      const auto xmpp_body = this->make_xmpp_body(line);
      if (this->record_history)
        uuid = Database::store_muc_message(this->get_bare_jid(), iid, std::chrono::system_clock::now(),
                                    std::get<0>(xmpp_body), irc->get_own_nick());
#endif
      for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
        this->xmpp.send_muc_message(std::to_string(iid), irc->get_own_nick(), this->make_xmpp_body(line),
                                    this->user_jid + "/" + resource, uuid);
    }
}

void Bridge::forward_affiliation_role_change(const Iid& iid, const std::string& from,
                                             const std::string& nick,
                                             const std::string& affiliation,
                                             const std::string& role,
                                             const std::string& id)
{
  IrcClient* irc = this->get_irc_client(iid.get_server());
  IrcChannel* chan = irc->get_channel(iid.get_local());
  if (!chan || !chan->joined)
    return;
  IrcUser* user = chan->find_user(nick);
  if (!user)
    {
      this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel",
                                   "item-not-found", "no such nick", false);
      return;
    }
  // For each affiliation or role, we have a “maximal” mode that we want to
  // set. We must remove any superior mode at the same time. For example if
  // the user already has +o mode, and we set its affiliation to member, we
  // remove the +o mode, and add +v.  For each “superior” mode (for example,
  // for +v, the superior modes are 'h', 'a', 'o' and 'q') we check if that
  // user has it, and if yes we remove that mode

  std::size_t nb = 1;               // the number of times the nick must be
                                    // repeated in the argument list
  std::string modes;                // The string of modes to
                                    // add/remove. For example "+v-aoh"
  std::vector<char> modes_to_remove; // List of modes to check for removal
  if (affiliation == "none")
    {
      modes = "";
      nb = 0;
      modes_to_remove = {'v', 'h', 'o', 'a', 'q'};
    }
  else if (affiliation == "member")
    {
      modes = "+v";
      modes_to_remove = {'h', 'o', 'a', 'q'};
    }
  else if (role == "moderator")
    {
      modes = "+h";
      modes_to_remove = {'o', 'a', 'q'};
    }
  else if (affiliation == "admin")
    {
      modes = "+o";
      modes_to_remove = {'a', 'q'};
    }
  else if (affiliation == "owner")
    {
      modes = "+a";
      modes_to_remove = {'q'};
    }
  else
    return;
  for (const char mode: modes_to_remove)
    if (user->modes.find(mode) != user->modes.end())
      {
        modes += "-"s + mode;
        nb++;
      }
  if (modes.empty())
    return;
  std::vector<std::string> args(nb, nick);
  args.insert(args.begin(), modes);
  irc->send_mode_command(iid.get_local(), args);

  irc_responder_callback_t cb = [this, iid, irc, id, from, nick](const std::string& irc_hostname, const IrcMessage& message) -> bool
  {
    if (irc_hostname != iid.get_server())
      return false;

    if (message.command == "MODE" && message.arguments.size() >= 2)
      {
        const std::string& chan_name = message.arguments[0];
        if (chan_name != iid.get_local())
          return false;
        const std::string actor_nick = IrcUser{message.prefix}.nick;
        if (!irc || irc->get_own_nick() != actor_nick)
          return false;

        this->xmpp.send_iq_result(id, from, std::to_string(iid));
      }
    else if (message.command == "401" && message.arguments.size() >= 2)
        {
          const std::string target_later = message.arguments[1];
          if (target_later != nick)
            return false;
          std::string error_message = "No such nick";
          if (message.arguments.size() >= 3)
            error_message = message.arguments[2];
          this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel", "item-not-found",
                                        error_message, false);
        }
    else if (message.command == "482" && message.arguments.size() >= 2)
      {
        const std::string chan_name_later = utils::tolower(message.arguments[1]);
        if (chan_name_later != iid.get_local())
          return false;
        std::string error_message = "You're not channel operator";
        if (message.arguments.size() >= 3)
          error_message = message.arguments[2];
        this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel", "not-allowed",
                                     error_message, false);
      }
    else if (message.command == "472" && message.arguments.size() >= 2)
      {
          std::string error_message = "Unknown mode: "s + message.arguments[1];
          if (message.arguments.size() >= 3)
            error_message = message.arguments[2];
          this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel", "not-allowed",
                                        error_message, false);
      }
    return true;
  };
  this->add_waiting_irc(std::move(cb));
}

void Bridge::send_private_message(const Iid& iid, const std::string& body, const std::string& type)
{
  if (iid.get_local().empty() || iid.get_server().empty())
    {
      this->xmpp.send_stanza_error("message", this->user_jid, std::to_string(iid), "",
                                    "cancel", "remote-server-not-found",
                                    std::to_string(iid) + " is not a valid channel name. "
                                    "A correct room jid is of the form: #<chan>%<server>",
                                    false);
      return;
    }
  IrcClient* irc = this->get_irc_client(iid.get_server());
  std::vector<std::string> lines = utils::split(body, '\n', true);
  if (lines.empty())
    return ;
  for (const std::string& line: lines)
    {
      if (line.substr(0, 4) == "/me ")
        irc->send_private_message(iid.get_local(), action_prefix + line.substr(4) + "\01", type);
      else
        irc->send_private_message(iid.get_local(), line, type);
    }
}

void Bridge::send_raw_message(const std::string& hostname, const std::string& body)
{
  IrcClient* irc = this->get_irc_client(hostname);
  irc->send_raw(body);
}

void Bridge::leave_irc_channel(Iid&& iid, const std::string& status_message, const std::string& resource)
{
  IrcClient* irc = this->get_irc_client(iid.get_server());
  const auto key = iid.to_tuple();
  if (!this->is_resource_in_chan(key, resource))
    return ;

  IrcChannel* channel = irc->get_channel(iid.get_local());

  const auto resources = this->number_of_resources_in_chan(key);
  if (resources == 1)
    {
      // Do not send a PART message if we actually are not in that channel
      // or if we already sent a PART but we are just waiting for the
      // acknowledgment from the server
      bool persistent = false;
#ifdef USE_DATABASE
      const auto coptions = Database::get_irc_channel_options_with_server_default(this->user_jid,
                                                                                  iid.get_server(), iid.get_local());
      persistent = coptions.persistent.value();
#endif
      if (channel->joined && !channel->parting && !persistent)
        {
          const auto& chan_name = iid.get_local();
          if (chan_name.empty())
            irc->leave_dummy_channel(status_message, resource);
          else
            irc->send_part_command(iid.get_local(), status_message);
        }
      else if (channel->joined)
        {
          this->send_muc_leave(iid, channel->get_self()->nick, "", true, resource);
        }
      // Since there are no resources left in that channel, we don't
      // want to receive private messages using this room's JID
      this->remove_all_preferred_from_jid_of_room(iid.get_local());
    }
  else
    {
      if (channel && channel->joined)
        this->send_muc_leave(iid, channel->get_self()->nick,
                             "Biboumi note: "s + std::to_string(resources - 1) + " resources are still in this channel.",
                             true, resource);
      this->remove_resource_from_chan(key, resource);
      if (this->number_of_channels_the_resource_is_in(iid.get_server(), resource) == 0)
        this->remove_resource_from_server(iid.get_server(), resource);
    }

}

void Bridge::send_irc_nick_change(const Iid& iid, const std::string& new_nick, const std::string& requesting_resource)
{
  // We don’t change the nick if the presence was sent to a channel the resource is not in.
  auto res_in_chan = this->is_resource_in_chan(ChannelKey{iid.get_local(), iid.get_server()}, requesting_resource);
  if (!res_in_chan)
    return;
  IrcClient* irc = this->get_irc_client(iid.get_server());
  irc->send_nick_command(new_nick);
}

void Bridge::send_irc_channel_list_request(const Iid& iid, const std::string& iq_id, const std::string& to_jid,
                                           ResultSetInfo rs_info)
{
  auto& list = channel_list_cache[iid.get_server()];

  // We fetch the list from the IRC server only if we have a complete
  // cached list that needs to be invalidated (that is, when the request
  // doesn’t have a after or before, or when the list is empty).
  // If the list is not complete, this means that a request is already
  // ongoing, so we just need to add the callback.
  // By default the list is complete and empty.
  if (list.complete &&
      (list.channels.empty() || (rs_info.after.empty() && rs_info.before.empty())))
    {
      IrcClient* irc = this->get_irc_client(iid.get_server());
      irc->send_list_command();

      // Add a callback that will populate our list
      list.channels.clear();
      list.complete = false;
      irc_responder_callback_t cb = [this, iid](const std::string& irc_hostname,
                                                const IrcMessage& message) -> bool
      {
        if (irc_hostname != iid.get_server())
          return false;

        auto& list = channel_list_cache[iid.get_server()];

        if (message.command == "263" || message.command == "RPL_TRYAGAIN" || message.command == "ERR_TOOMANYMATCHES"
            || message.command == "ERR_NOSUCHSERVER")
          {
            list.complete = true;
            return true;
          }
        else if (message.command == "322" || message.command == "RPL_LIST")
          { // Add element to list
            if (message.arguments.size() == 4)
              {
                list.channels.emplace_back(message.arguments[1] + utils::empty_if_fixed_server("%" + iid.get_server()),
                                           message.arguments[2], message.arguments[3]);
              }
            return false;
          }
        else if (message.command == "323" || message.command == "RPL_LISTEND")
          { // Send the iq response with the content of the list
            list.complete = true;
            return true;
          }
        return false;
      };

      this->add_waiting_irc(std::move(cb));
    }

  // If the list is complete, we immediately send the answer.
  // Otherwise, we install a callback, that will populate our list and send
  // the answer when we can.
  if (list.complete)
    {
      this->send_matching_channel_list(list, rs_info, iq_id, to_jid, std::to_string(iid));
    }
  else
    {
      // Add a callback to answer the request as soon as we can
      irc_responder_callback_t cb = [this, iid, iq_id, to_jid,
                                     rs_info=std::move(rs_info)](const std::string& irc_hostname,
                                                                 const IrcMessage& message) -> bool
      {
        if (irc_hostname != iid.get_server())
          return false;

        if (message.command == "263" || message.command == "RPL_TRYAGAIN" || message.command == "ERR_TOOMANYMATCHES"
            || message.command == "ERR_NOSUCHSERVER")
          {
            std::string text;
            if (message.arguments.size() >= 2)
              text = message.arguments[1];
            this->xmpp.send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "wait", "service-unavailable", text, false);
            return true;
          }
        else if (message.command == "322" || message.command == "RPL_LIST")
          {
            auto& list = channel_list_cache[iid.get_server()];
            const auto res = this->send_matching_channel_list(list, rs_info, iq_id, to_jid, std::to_string(iid));
            log_debug("We added a new channel in our list, can we send the result? ", std::boolalpha, res);
            return res;
          }
        else if (message.command == "323" || message.command == "RPL_LISTEND")
          { // Send the iq response with the content of the list
            auto& list = channel_list_cache[iid.get_server()];
            this->send_matching_channel_list(list, rs_info, iq_id, to_jid, std::to_string(iid));
            return true;
          }
        return false;
      };

      this->add_waiting_irc(std::move(cb));
    }
}

bool Bridge::send_matching_channel_list(const ChannelList& channel_list, const ResultSetInfo& rs_info,
                                        const std::string& id, const std::string& to_jid, const std::string& from)
{
  auto begin = channel_list.channels.begin();
  auto end = channel_list.channels.begin();
  if (channel_list.complete)
    {
      begin = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
      {
        return rs_info.after == element.channel + "@" + this->xmpp.get_served_hostname();
      });
      if (begin == channel_list.channels.end())
        begin = channel_list.channels.begin();
      else
        begin = std::next(begin);
      end = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
      {
        return rs_info.before == element.channel + "@" + this->xmpp.get_served_hostname();
      });
      if (rs_info.max >= 0)
        {
          if (std::distance(begin, end) >= rs_info.max)
            end = begin + rs_info.max;
        }
    }
  else
    {
      if (rs_info.after.empty() && rs_info.before.empty() && rs_info.max < 0)
        return false;
      if (!rs_info.after.empty())
        {
          begin = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
          {
            return rs_info.after == element.channel + "@" + this->xmpp.get_served_hostname();
          });
          if (begin == channel_list.channels.end())
            return false;
          begin = std::next(begin);
        }
        if (!rs_info.before.empty())
        {
          end = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
          {
            return rs_info.before == element.channel + "@" + this->xmpp.get_served_hostname();
          });
          if (end == channel_list.channels.end())
            return false;
        }
      if (rs_info.max >= 0)
        {
          if (std::distance(begin, end) < rs_info.max)
            return false;
          else
            end = begin + rs_info.max;
        }
    }
  this->xmpp.send_iq_room_list_result(id, to_jid, from, channel_list, begin, end, rs_info);
  return true;
}

void Bridge::send_irc_kick(const Iid& iid, const std::string& target, const std::string& reason,
                           const std::string& iq_id, const std::string& to_jid)
{
  IrcClient* irc = this->get_irc_client(iid.get_server());

  irc->send_kick_command(iid.get_local(), target, reason);
  irc_responder_callback_t cb = [this, target, iq_id, to_jid, iid](const std::string& irc_hostname,
                                                                   const IrcMessage& message) -> bool
    {
      if (irc_hostname != iid.get_server())
        return false;
      if (message.command == "KICK" && message.arguments.size() >= 2)
        {
          const std::string target_later = message.arguments[1];
          const std::string chan_name_later = utils::tolower(message.arguments[0]);
          if (target_later != target || chan_name_later != iid.get_local())
            return false;
          this->xmpp.send_iq_result(iq_id, to_jid, std::to_string(iid));
        }
      else if (message.command == "401" && message.arguments.size() >= 2)
        {
          const std::string target_later = message.arguments[1];
          if (target_later != target)
            return false;
          std::string error_message = "No such nick";
          if (message.arguments.size() >= 3)
            error_message = message.arguments[2];
          this->xmpp.send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "item-not-found",
                                        error_message, false);
        }
      else if (message.command == "482" && message.arguments.size() >= 2)
        {
          const std::string chan_name_later = utils::tolower(message.arguments[1]);
          if (chan_name_later != iid.get_local())
            return false;
          std::string error_message = "You're not channel operator";
          if (message.arguments.size() >= 3)
            error_message = message.arguments[2];
          this->xmpp.send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "not-allowed",
                                        error_message, false);
        }
      return true;
    };
  this->add_waiting_irc(std::move(cb));
}

void Bridge::set_channel_topic(const Iid& iid, std::string subject)
{
  IrcClient* irc = this->get_irc_client(iid.get_server());
  std::string::size_type pos{0};
  while ((pos = subject.find('\n', pos)) != std::string::npos)
    subject[pos] = ' ';
  irc->send_topic_command(iid.get_local(), subject);
}

void Bridge::send_xmpp_version_to_irc(const Iid& iid, const std::string& name, const std::string& version, const std::string& os)
{
  std::string result(name + " " + version + " " + os);

  this->send_private_message(iid, "\01VERSION "s + result + "\01", "NOTICE");
}

void Bridge::send_irc_ping_result(const Iid& iid, const std::string& id)
{
  this->send_private_message(iid, "\01PING "s + utils::revstr(id) + "\01", "NOTICE");
}

void Bridge::send_irc_user_ping_request(const std::string& irc_hostname, const std::string& nick,
                                        const std::string& iq_id, const std::string& to_jid,
                                        const std::string& from_jid)
{
  Iid iid(nick, irc_hostname, Iid::Type::User);
  this->send_private_message(iid, "\01PING " + iq_id + "\01");

  irc_responder_callback_t cb = [this, nick=utils::tolower(nick), iq_id, to_jid, irc_hostname, from_jid]
          (const std::string& hostname, const IrcMessage& message) -> bool
    {
      if (irc_hostname != hostname || message.arguments.size() < 2)
        return false;
      IrcUser user(message.prefix);
      const std::string body = message.arguments[1];
      if (message.command == "NOTICE" && utils::tolower(user.nick) == nick
          && body.substr(0, 6) == "\01PING ")
        {
          const std::string id = body.substr(6, body.size() - 7);
          if (id != iq_id)
            return false;
          this->xmpp.send_iq_result_full_jid(iq_id, to_jid, from_jid);
          return true;
        }
      if (message.command == "401" && message.arguments[1] == nick)
        {
          std::string error_message = "No such nick";
          if (message.arguments.size() >= 3)
            error_message = message.arguments[2];
          this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "service-unavailable",
                                        error_message, true);
          return true;
        }

      return false;
    };
  this->add_waiting_irc(std::move(cb));
}

void Bridge::send_irc_participant_ping_request(const Iid& iid, const std::string& nick,
                                               const std::string& iq_id, const std::string& to_jid,
                                               const std::string& from_jid)
{
  Jid from(to_jid);
  IrcClient* irc = this->get_irc_client(iid.get_server());
  IrcChannel* chan = irc->get_channel(iid.get_local());
  if (!chan->joined || !this->is_resource_in_chan(iid.to_tuple(), from.resource))
    {
      this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "not-allowed",
                                    "", true);
      return;
    }
  if (chan->get_self()->nick != nick && !chan->find_user(nick))
    {
      this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "item-not-found",
                                    "Recipient not in room", true);
      return;
    }

  // The user is in the room, send it a direct PING
  this->send_irc_user_ping_request(iid.get_server(), nick, iq_id, to_jid, from_jid);
}

void Bridge::on_gateway_ping(const std::string& irc_hostname, const std::string& iq_id, const std::string& to_jid,
                             const std::string& from_jid)
{
  Jid jid(from_jid);
  if (irc_hostname.empty() || this->find_irc_client(irc_hostname))
    this->xmpp.send_iq_result(iq_id, to_jid, jid.local);
  else
    this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "service-unavailable",
                                  "", true);
}

void Bridge::send_irc_invitation(const Iid& iid, const std::string& to)
{
  IrcClient* irc = this->get_irc_client(iid.get_server());
  Jid to_jid(to);
  std::string target_nick;
  // Many ways to address a nick:
  // A jid (ANY jid…) with a resource
  if (!to_jid.resource.empty())
    target_nick = to_jid.resource;
  else if (!to_jid.local.empty()) // A jid with a iid with a local part
    target_nick = Iid(to_jid.local, {}).get_local();
  else
    target_nick = to; // Not a jid, just the nick
  irc->send_invitation(iid.get_local(), target_nick);
}

void Bridge::send_irc_version_request(const std::string& irc_hostname, const std::string& target,
                                      const std::string& iq_id, const std::string& to_jid,
                                      const std::string& from_jid)
{
  Iid iid(target, irc_hostname, Iid::Type::User);
  this->send_private_message(iid, "\01VERSION\01");
  // TODO, add a timer to remove that waiting iq if the server does not
  // respond with a matching command before n seconds
  irc_responder_callback_t cb = [this, target, iq_id, to_jid, irc_hostname, from_jid]
          (const std::string& hostname, const IrcMessage& message) -> bool
    {
      if (irc_hostname != hostname)
        return false;
      IrcUser user(message.prefix);
      if (message.command == "NOTICE" && utils::tolower(user.nick) == utils::tolower(target) &&
          message.arguments.size() >= 2 && message.arguments[1].substr(0, 9) == "\01VERSION ")
        {
          // remove the "\01VERSION " and the "\01" parts from the string
          const std::string version = message.arguments[1].substr(9, message.arguments[1].size() - 10);
          this->xmpp.send_version(iq_id, to_jid, from_jid, version);
          return true;
        }
      if (message.command == "401" && message.arguments.size() >= 2
          && message.arguments[1] == target)
        {
          std::string error_message = "No such nick";
          if (message.arguments.size() >= 3)
            error_message = message.arguments[2];
          this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "item-not-found",
                                        error_message, true);
          return true;
        }
      return false;
    };
  this->add_waiting_irc(std::move(cb));
}

void Bridge::send_message(const Iid& iid, const std::string& nick, const std::string& body, const bool muc)
{
  const auto encoding = in_encoding_for(*this, iid);
  if (muc)
    {
#ifdef USE_DATABASE
      const auto xmpp_body = this->make_xmpp_body(body, encoding);
      if (!nick.empty() && this->record_history)
        Database::store_muc_message(this->get_bare_jid(), iid, std::chrono::system_clock::now(),
                                    std::get<0>(xmpp_body), nick);
#endif
      for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
        {
          this->xmpp.send_muc_message(std::to_string(iid), nick, this->make_xmpp_body(body, encoding),
                                      this->user_jid + "/" + resource, {});

        }
    }
  else
    {
      std::string target = std::to_string(iid);
      const auto it = this->preferred_user_from.find(iid.get_local());
      if (it != this->preferred_user_from.end())
        {
          const auto chan_name = Iid(Jid(it->second).local, {}).get_local();
          for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, iid.get_server()}])
            this->xmpp.send_message(it->second, this->make_xmpp_body(body, encoding),
                                    this->user_jid + "/" + resource, "chat", true, true);
        }
      else
        {
          for (const auto& resource: this->resources_in_server[iid.get_server()])
            this->xmpp.send_message(std::to_string(iid), this->make_xmpp_body(body, encoding),
                                    this->user_jid + "/" + resource, "chat", false, true);
        }
    }
}

void Bridge::send_presence_error(const Iid& iid, const std::string& nick,
                                 const std::string& type, const std::string& condition,
                                 const std::string& error_code, const std::string& text)
{
  this->xmpp.send_presence_error(std::to_string(iid), nick, this->user_jid, type, condition, error_code, text);
}

void Bridge::send_muc_leave(const Iid& iid, const std::string& nick,
                            const std::string& message, const bool self,
                            const std::string& resource)
{
  if (!resource.empty())
    this->xmpp.send_muc_leave(std::to_string(iid), nick, this->make_xmpp_body(message),
                              this->user_jid + "/" + resource, self);
  else
    {
      for (const auto &res: this->resources_in_chan[iid.to_tuple()])
        this->xmpp.send_muc_leave(std::to_string(iid), nick, this->make_xmpp_body(message),
                                  this->user_jid + "/" + res, self);
      if (self)
        this->remove_all_resources_from_chan(iid.to_tuple());

    }
  IrcClient* irc = this->find_irc_client(iid.get_server());
  if (self && irc && irc->number_of_joined_channels() == 0)
    this->quit_or_start_linger_timer(iid.get_server());
}

void Bridge::send_nick_change(Iid&& iid,
                              const std::string& old_nick,
                              const std::string& new_nick,
                              const char user_mode,
                              const bool self)
{
  std::string affiliation;
  std::string role;
  std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user_mode);

  for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
    this->xmpp.send_nick_change(std::to_string(iid),
                                old_nick, new_nick, affiliation, role, this->user_jid + "/" + resource, self);
}

void Bridge::send_xmpp_message(const std::string& from, const std::string& author, const std::string& msg)
{
  std::string body;
  if (!author.empty())
    {
      IrcUser user(author);
      body = "\u000303"s + user.nick + (user.host.empty()?
                                        "\u0003: ":
                                        (" (\u000310" + user.host + "\u000303)\u0003: ")) + msg;
    }
  else
    body = msg;

  const auto encoding = in_encoding_for(*this, {from, this});
  for (const auto& resource: this->resources_in_server[from])
    {
      this->xmpp.send_message(from, this->make_xmpp_body(body, encoding), this->user_jid + "/" + resource, "chat", false, false);
    }
}

void Bridge::send_user_join(const std::string& hostname, const std::string& chan_name,
                            const IrcUser* user, const char user_mode, const bool self)
{
  const auto resources = this->resources_in_chan[ChannelKey{chan_name, hostname}];
  if (self && resources.empty())
    { // This was a forced join: no client ever asked to join this room,
      // but the server tells us we are in that room anyway.  XMPP can’t
      // do that, so we invite all the resources to join that channel.
      const Iid iid(chan_name, hostname, Iid::Type::Channel);
      this->send_xmpp_invitation(iid, "");
    }
    else
    {
      for (const auto& resource: resources)
        this->send_user_join(hostname, chan_name, user, user_mode, self, resource);
    }
}

void Bridge::send_user_join(const std::string& hostname, const std::string& chan_name,
                       const IrcUser* user, const char user_mode,
                       const bool self, const std::string& resource)
{
  std::string affiliation;
  std::string role;
  std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user_mode);

  std::string encoded_chan_name(chan_name);
  xep0106::encode(encoded_chan_name);

  this->xmpp.send_user_join(encoded_chan_name + utils::empty_if_fixed_server("%" + hostname), user->nick, user->host,
                            affiliation, role, this->user_jid + "/" + resource, self);
}

void Bridge::send_topic(const std::string& hostname, const std::string& chan_name, const std::string& topic,
                        const std::string& who)
{
  for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, hostname}])
    {
      this->send_topic(hostname, chan_name, topic, who, resource);
    }
}

void Bridge::send_topic(const std::string& hostname, const std::string& chan_name,
                        const std::string& topic, const std::string& who,
                        const std::string& resource)
{
  std::string encoded_chan_name(chan_name);
  xep0106::encode(encoded_chan_name);
  const auto encoding = in_encoding_for(*this, {encoded_chan_name, hostname, Iid::Type::Channel});
  this->xmpp.send_topic(encoded_chan_name + utils::empty_if_fixed_server(
      "%" + hostname), this->make_xmpp_body(topic, encoding), this->user_jid + "/" + resource, who);

}

void Bridge::send_room_history(const std::string& hostname, const std::string& chan_name)
{
  for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, hostname}])
    this->send_room_history(hostname, chan_name, resource);
}

void Bridge::send_room_history(const std::string& hostname, std::string chan_name, const std::string& resource)
{
#ifdef USE_DATABASE
  const auto coptions = Database::get_irc_channel_options_with_server_and_global_default(this->user_jid, hostname, chan_name);
  const auto lines = Database::get_muc_logs(this->user_jid, chan_name, hostname, coptions.maxHistoryLength.value());
  chan_name.append(utils::empty_if_fixed_server("%" + hostname));
  for (const auto& line: lines)
    {
      const auto seconds = line.date.value().timeStamp();
      this->xmpp.send_history_message(chan_name, line.nick.value(), line.body.value(),
                                      this->user_jid + "/" + resource, seconds);
    }
#endif
}

std::string Bridge::get_own_nick(const Iid& iid)
{
  IrcClient* irc = this->find_irc_client(iid.get_server());
  if (irc)
    return irc->get_own_nick();
  return {};
}

size_t Bridge::active_clients() const
{
  return this->irc_clients.size();
}

void Bridge::kick_muc_user(Iid&& iid, const std::string& target, const std::string& reason, const std::string& author,
                           const bool self)
{
  for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
      this->xmpp.kick_user(std::to_string(iid), target, reason, author, this->user_jid + "/" + resource, self);
}

void Bridge::send_nickname_conflict_error(const Iid& iid, const std::string& nickname)
{
    for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
        this->xmpp.send_presence_error(std::to_string(iid), nickname, this->user_jid + "/" + resource,
                                       "cancel", "conflict", "409", "");
}

void Bridge::send_affiliation_role_change(const Iid& iid, const std::string& target, const char mode)
{
  std::string role;
  std::string affiliation;

  std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(mode);
  for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
    this->xmpp.send_affiliation_role_change(std::to_string(iid), target, affiliation, role,
                                            this->user_jid + "/" + resource);
}

void Bridge::send_iq_version_request(const std::string& nick, const std::string& hostname)
{
  const auto resources = this->resources_in_server[hostname];
  if (resources.begin() != resources.end())
    this->xmpp.send_iq_version_request(utils::tolower(nick) + utils::empty_if_fixed_server("%" + hostname),
                                       this->user_jid + "/" + *resources.begin());
}

void Bridge::send_xmpp_ping_request(const std::string& nick, const std::string& hostname,
                                    const std::string& id)
{
  // Use revstr because the forwarded ping to target XMPP user must not be
  // the same as the request iq, but we also need to get it back easily
  // (revstr again)
  // Forward to the first resource (arbitrary, based on the “order” of the std::set) only
  const auto resources = this->resources_in_server[hostname];
  if (resources.begin() != resources.end())
    this->xmpp.send_ping_request(utils::tolower(nick) + utils::empty_if_fixed_server("%" + hostname),
                                 this->user_jid + "/" + *resources.begin(), utils::revstr(id));
}

void Bridge::send_xmpp_invitation(const Iid& iid, const std::string& author)
{
  for (const auto& resource: this->resources_in_server[iid.get_server()])
    this->xmpp.send_invitation(std::to_string(iid), this->user_jid + "/" + resource, author);
}

void Bridge::set_preferred_from_jid(const std::string& nick, const std::string& full_jid)
{
  auto it = this->preferred_user_from.find(nick);
  if (it == this->preferred_user_from.end())
    this->preferred_user_from.emplace(nick, full_jid);
  else
    this->preferred_user_from[nick] = full_jid;
}

void Bridge::remove_preferred_from_jid(const std::string& nick)
{
  auto it = this->preferred_user_from.find(nick);
  if (it != this->preferred_user_from.end())
    this->preferred_user_from.erase(it);
}

void Bridge::remove_all_preferred_from_jid_of_room(const std::string& channel_name)
{
  for (auto it = this->preferred_user_from.begin(); it != this->preferred_user_from.end();)
    {
      Iid iid(Jid(it->second).local, {});
      if (iid.get_local() == channel_name)
        it = this->preferred_user_from.erase(it);
      else
        ++it;
    }
}

void Bridge::add_waiting_irc(irc_responder_callback_t&& callback)
{
  this->waiting_irc.emplace_back(std::move(callback));
}

void Bridge::trigger_on_irc_message(const std::string& irc_hostname, const IrcMessage& message)
{
  auto it = this->waiting_irc.begin();
  while (it != this->waiting_irc.end())
    {
      if ((*it)(irc_hostname, message) == true)
        it = this->waiting_irc.erase(it);
      else
        ++it;
    }
}

std::unordered_map<std::string, std::shared_ptr<IrcClient>>& Bridge::get_irc_clients()
{
  return this->irc_clients;
}

const std::unordered_map<std::string, std::shared_ptr<IrcClient>>& Bridge::get_irc_clients() const
{
  return this->irc_clients;
}

std::set<char> Bridge::get_chantypes(const std::string& hostname) const
{
  IrcClient* irc = this->find_irc_client(hostname);
  if (!irc)
    return {'#', '&'};
  return irc->get_chantypes();
}

void Bridge::add_resource_to_chan(const Bridge::ChannelKey& channel, const std::string& resource)
{
  auto it = this->resources_in_chan.find(channel);
  if (it == this->resources_in_chan.end())
    this->resources_in_chan[channel] = {resource};
  else
    it->second.insert(resource);
}

void Bridge::remove_resource_from_chan(const Bridge::ChannelKey& channel, const std::string& resource)
{
  auto it = this->resources_in_chan.find(channel);
  if (it != this->resources_in_chan.end())
    {
      it->second.erase(resource);
      if (it->second.empty())
        this->resources_in_chan.erase(it);
    }
}

bool Bridge::is_resource_in_chan(const Bridge::ChannelKey& channel, const std::string& resource) const
{
  auto it = this->resources_in_chan.find(channel);
  if (it != this->resources_in_chan.end())
    if (it->second.count(resource) == 1)
      return true;
  return false;
}

void Bridge::remove_all_resources_from_chan(const Bridge::ChannelKey& channel)
{
  this->resources_in_chan.erase(channel);
}

void Bridge::add_resource_to_server(const Bridge::IrcHostname& irc_hostname, const std::string& resource)
{
  auto it = this->resources_in_server.find(irc_hostname);
  if (it == this->resources_in_server.end())
    this->resources_in_server[irc_hostname] = {resource};
  else
    it->second.insert(resource);
}

void Bridge::remove_resource_from_server(const Bridge::IrcHostname& irc_hostname, const std::string& resource)
{
  auto it = this->resources_in_server.find(irc_hostname);
  if (it != this->resources_in_server.end())
    {
      it->second.erase(resource);
      if (it->second.empty())
        this->resources_in_server.erase(it);
    }
}

bool Bridge::is_resource_in_server(const Bridge::IrcHostname& irc_hostname, const std::string& resource) const
{
  auto it = this->resources_in_server.find(irc_hostname);
  if (it != this->resources_in_server.end())
    if (it->second.count(resource) == 1)
      return true;
  return false;
}

std::size_t Bridge::number_of_resources_in_chan(const Bridge::ChannelKey& channel) const
{
  auto it = this->resources_in_chan.find(channel);
  if (it == this->resources_in_chan.end())
    return 0;
  return it->second.size();
}

std::size_t Bridge::number_of_channels_the_resource_is_in(const std::string& irc_hostname, const std::string& resource) const
{
  std::size_t res = 0;
  for (auto pair: this->resources_in_chan)
    {
      if (std::get<0>(pair.first) == irc_hostname && pair.second.count(resource) != 0)
        res++;
    }
  return res;
}

void Bridge::generate_channel_join_for_resource(const Iid& iid, const std::string& resource)
{
  IrcClient* irc = this->get_irc_client(iid.get_server());
  IrcChannel* channel = irc->get_channel(iid.get_local());
  const auto self = channel->get_self();

  // Send the occupant list
  for (const auto& user: channel->get_users())
    {
      if (user->nick != self->nick)
        {
          this->send_user_join(iid.get_server(), iid.get_encoded_local(),
                               user.get(), user->get_most_significant_mode(irc->get_sorted_user_modes()),
                               false, resource);
        }
    }
  this->send_user_join(iid.get_server(), iid.get_encoded_local(),
                       self, self->get_most_significant_mode(irc->get_sorted_user_modes()),
                       true, resource);
  this->send_room_history(iid.get_server(), iid.get_local(), resource);
  this->send_topic(iid.get_server(), iid.get_encoded_local(), channel->topic, channel->topic_author, resource);
}

#ifdef USE_DATABASE
void Bridge::set_record_history(const bool val)
{
  this->record_history = val;
}
#endif

void Bridge::quit_or_start_linger_timer(const std::string& irc_hostname)
{
#ifdef USE_DATABASE
  auto options = Database::get_irc_server_options(this->get_bare_jid(),
                                                  irc_hostname);
  const auto timeout = std::chrono::seconds(options.lingerTime.value());
#else
  const auto timeout = 0s;
#endif

  const auto event_name = "IRCLINGER:" + irc_hostname + ".." + this->get_bare_jid();
  TimedEvent event(std::chrono::steady_clock::now() + timeout, [this, irc_hostname]() {
    IrcClient* irc = this->find_irc_client(irc_hostname);
    if (irc)
      irc->send_quit_command("");
  }, event_name);
  TimedEventsManager::instance().add_event(std::move(event));
}

void Bridge::cancel_linger_timer(const std::string& irc_hostname)
{
  const auto event_name = "IRCLINGER:" + irc_hostname + ".." + this->get_bare_jid();
  TimedEventsManager::instance().cancel(event_name);
}