summaryrefslogtreecommitdiff
path: root/message.c
blob: 3887ec9fd37ac9f4a5bd40b0712e7a948303b81b (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
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
/*
 * This file is part of blabouncer (https://www.blatech.co.uk/l_bratch/blabouncer).
 * Copyright (C) 2019 Luke Bratch <luke@bratch.co.uk>.
 *
 * Blabouncer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * Blabouncer is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with blabouncer. If not, see <http://www.gnu.org/licenses/>.
*/

#include "message.h"

// Process an IRC message that came from the real server.
// Return 1 if we processed it, or 0 if we didn't.
int processservermessage(SSL *server_ssl, char *str, struct client *clients, int sourcefd, struct ircdstate *ircdstate,
                         struct channel *channels, struct settings *settings, char tokens[MAXTOKENS][MAXDATASIZE], int counter) {
  // Record that we received something from the server for timeout checking purposes
  ircdstate->lastmessagetime = time(NULL); // snprintf(NULL, 0, "%ld", timenow);
  // And we can't be timing out
  ircdstate->timeoutcheck = 0;

  // Server PING received?  If so, send a PONG back with the next element as the argument.
  if (strncmp(tokens[0], "PING", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Server PING found and it is: %s with length %zd!  Sending response...\n", tokens[0], strlen(tokens[0]));

    char outgoingmsg[MAXDATASIZE]; // String to send to server
    if (!snprintf(outgoingmsg, MAXDATASIZE, "PONG %s", tokens[1])) { // TODO - Make sure tokens[1] actually has a token
      fprintf(stderr, "Error while preparing PONG response!\n");
      debugprint(DEBUG_CRIT, "Error while preparing PONG response!\n");
      outgoingmsg[0] = '\0';
    }
    // sourcefd = 0 as this is a trusted response
    sendtoserver(server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);

    // We processed something so return true
    return 1;
  }

  // Prefix received?  TODO - Care about what the prefix is - what if it's a different server/network/whatever?
  if (tokens[0][0] == ':') {
    debugprint(DEBUG_FULL, "Prefix found: '%s'!  Next token is '%s', length %zd.\n", tokens[0], tokens[1], strlen(tokens[1]));
    // Greetings 001 through to 005, store in ircdstate array for resending when clients connect
    // Also store our nick!user@host from greeting 001
    // Also store the real IRCd's name from greeting 004
    if (strncmp(tokens[1], "001", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Found greeting 001 (%s) (length %zd), storing in ircdstate struct.\n", str, strlen(str));
      strncpy(ircdstate->greeting001, str, strlen(str));
      // Null the end of the string
      ircdstate->greeting001[strlen(str)] = '\0';
      debugprint(DEBUG_FULL, "Storing our nick!user@host (:%s) from greeting 001 in ircdstate struct.\n", tokens[counter - 1]);
      // Prepend a colon (:) first since everything (so far) needs one
      if (!snprintf(ircdstate->nickuserhost, MAXDATASIZE, ":%s", tokens[counter - 1])) {
        fprintf(stderr, "Error while preparing nickuserhost for storage!\n");
        debugprint(DEBUG_CRIT, "Error while preparing nickuserhost for storage!\n");
        exit(1);
      }
      // Null the end of the new string
      ircdstate->nickuserhost[strlen(tokens[counter - 1]) + 1] = '\0'; // +1 for the inserted colon
      debugprint(DEBUG_FULL, "nickuserhost '%s' stored.\n", ircdstate->nickuserhost);
      return 1;
    } else if (strncmp(tokens[1], "002", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Found greeting 002 (%s), storing in ircdstate struct.\n", str);
      strncpy(ircdstate->greeting002, str, strlen(str));
      // Null the end of the string
      ircdstate->greeting002[strlen(str)] = '\0';
      return 1;
    } else if (strncmp(tokens[1], "003", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Found greeting 003 (%s), storing in ircdstate struct.\n", str);
      strncpy(ircdstate->greeting003, str, strlen(str));
      // Null the end of the string
      ircdstate->greeting003[strlen(str)] = '\0';
      return 1;
    } else if (strncmp(tokens[1], "004", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Found greeting 004 (%s), storing in ircdstate struct.\n", str);
      strncpy(ircdstate->greeting004, str, strlen(str));
      // Null the end of the string
      ircdstate->greeting004[strlen(str)] = '\0';
      debugprint(DEBUG_FULL, "Storing the real IRCd's name (%s) from greeting 004 in ircdstate struct.\n", tokens[3]);
      strncpy(ircdstate->ircdname, tokens[3], strlen(tokens[3]));
      // Null the end of the string
      ircdstate->ircdname[strlen(tokens[3])] = '\0';
      // Receiving greeting 004 means we're now registered
      // Request IRCv3 multi-prefix extension so we can more accurately inform new clients about current user prefixes
      sendtoserver(server_ssl, "CAP REQ multi-prefix", strlen("CAP REQ multi-prefix"), 0, clients, settings);
      // Send any configured connect commands
      for (int i = 0; i < MAXCONFARR; i++) {
        if (settings->connectcommands[i][0]) {
          sendtoserver(server_ssl, settings->connectcommands[i], strlen(settings->connectcommands[i]), 0, clients, settings);
        }
      }
      // If this is a reconnection, JOIN existing channels and catch clients up again
      if (ircdstate->reconnecting) {
        // First tell clients if our nick changed
        if (!strcmp(ircdstate->ircnick, ircdstate->oldnick)) {
          debugprint(DEBUG_SOME, "Telling clients about nick change.\n");
          char nickmsg[MAXDATASIZE];
          snprintf(nickmsg, MAXDATASIZE, ":%s NICK :%s", ircdstate->oldnick, ircdstate->ircnick);
          sendtoallclients(clients, nickmsg, sourcefd, settings);
        }

        // Next re-join channels
        // Storing separately so we can skip over blank channels.
        int channelcount = getchannelcount(channels);
        // Join all the channels and make a note of the channel count
        for (int i = 0; i < channelcount; i++) {
          // Skip this one and increment channelcount if it's a blank channel
          if (!channels[i].name[0]) {
              debugprint(DEBUG_FULL, "Reconnection: Skipping channel[%d], incrementing channelcount.\n", i);
              channelcount++;
              continue;
          }

          debugprint(DEBUG_SOME, "Reconnection: Re-joining '%s'.\n", channels[i].name);

          char joinmsg[MAXDATASIZE];
          snprintf(joinmsg, MAXDATASIZE, "JOIN %s", channels[i].name);
          sendtoserver(server_ssl, joinmsg, strlen(joinmsg), 0, clients, settings);
        }

        // Finally do a replay for all clients and tell them we're reconnected
        for (int i = 0; i < MAXCLIENTS; i++) {
          if (clients[i].fd) {
            char alertmsg[MAXDATASIZE];
            if (!doautoreplay(clients[i].fd, clients, settings, ircdstate, channels)) {
              snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstate->ircnick);
              sendtoclient(sourcefd, alertmsg, clients, settings, 0);
            }
            snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :Reconnection complete.", ircdstate->ircnick);
            sendtoclient(clients[i].fd, alertmsg, clients, settings, 0);
          }
        }

        // Reconnection complete
        ircdstate->oldnick[0] = '\0';
        ircdstate->reconnecting = 0;
      // If it's not, deal with auto channels
      } else {
        // Join any auto channels set in the configuration file
        joinautochannels(server_ssl, clients, settings);
      }
      return 1;
    } else if (strncmp(tokens[1], "005", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Found greeting 005 (%s), storing in ircdstate struct.\n", str);
      // Find an empty greeting005 string in ircdstate and store in there...
      if (!ircdstate->greeting005a[0]) {
        strncpy(ircdstate->greeting005a, str, strlen(str));
        ircdstate->greeting005a[strlen(str)] = '\0';
      } else if (!ircdstate->greeting005b[0]) {
        strncpy(ircdstate->greeting005b, str, strlen(str));
        ircdstate->greeting005b[strlen(str)] = '\0';
      } else if (!ircdstate->greeting005c[0]) {
        strncpy(ircdstate->greeting005c, str, strlen(str));
        ircdstate->greeting005c[strlen(str)] = '\0';
      } else {
        // ...or if they are all fill, discard - TODO - Support more than three greeting005 strings!
        debugprint(DEBUG_CRIT, "Already stored three greeting 005 strings, discarding this one.\n");
      }
      return 1;
    }

    // Server JOIN received?  Add to our local channel array if it's us, or record the user in the channel if it's not us.
    if (strncmp(tokens[1], "JOIN", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server JOIN found and it is: %s with length %zd!  Next token is '%s'.  Adding to local channel list if it's us.\n", tokens[0], strlen(tokens[0]), tokens[2]);
      // Next token should be the channel name but it probably needs the leading ':' stripping
      debugprint(DEBUG_FULL, "processircmessage(): Channel name was '%s'\n", tokens[2]);
      stripprefix(tokens[2]);
      debugprint(DEBUG_FULL, "processircmessage(): Channel name now '%s'\n", tokens[2]);

      // If the user JOINing is us, then we must have joined a channel, so add to our local channel array.
      // Copy to a temporary string so we still have the original in case we need it
      char *prefixcopy = strdup(tokens[0]);
      // Just get the nick for comparison
      extractnickfromprefix(prefixcopy);
      if (strncmp(prefixcopy, ircdstate->ircnick, strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Server JOIN: nick is ours ('%s' vs '%s').\n", prefixcopy, ircdstate->ircnick);
        // TODO - Saner way to initialise this since we don't have the variables yet?
        // TODO - Defaulting to type '=' which is "public" since I don't know what else to guess.
        createchannel(channels, tokens[2], "TOPIC", "TOPICWHO", "0");
      } else {
        debugprint(DEBUG_FULL, "Server JOIN: nick is NOT ours ('%s' vs '%s').\n", prefixcopy, ircdstate->ircnick);
      }

      // And then send to all clients
      sendtoallclients(clients, str, sourcefd, settings);

      // Write to replay log if replay logging enabled
      if (settings->replaylogging) {
        writereplayline(str, settings->basedir);
      }

      // Write to normal log if logging enabled
      if (settings->logging) {
        logline(str, ircdstate, settings->basedir, LOG_JOINPART);
      }

      free(prefixcopy);
      return 1;
    }

    // Server PART received?  Remove from our local channel list if it's us.
    if (strncmp(tokens[1], "PART", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server PART found and it is: %s with length %zd!  Next token is '%s'.  Removing from local channel list if it's us.\n", tokens[0], strlen(tokens[0]), tokens[2]);

      // If the user PARTing is us, then we must have left a channel, so remove it from our local channel array.
      // (If it's not us, then it's another user PARTing a channel, so just pass straight through to letting all our clients know.)
      // Copy to a temporary string so we still have the original in case we need it
      char *prefixcopy = strdup(tokens[0]);
      // Just get the nick for comparison
      extractnickfromprefix(prefixcopy);
      if (strncmp(prefixcopy, ircdstate->ircnick, strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Server PART: nick is ours ('%s' vs '%s').\n", prefixcopy, ircdstate->ircnick);
        removechannel(channels, tokens[2]);
      } else {
        debugprint(DEBUG_FULL, "Server PART: nick is NOT ours ('%s' vs '%s').\n", prefixcopy, ircdstate->ircnick);
      }

      // And then send to all clients
      sendtoallclients(clients, str, sourcefd, settings);

      // Write to replay log if replay logging enabled
      if (settings->replaylogging) {
        writereplayline(str, settings->basedir);
      }

      // Write to normal log if logging enabled
      if (settings->logging) {
        logline(str, ircdstate, settings->basedir, LOG_JOINPART);
      }

      free(prefixcopy);
      return 1;
    }

    // Channel topics/names/nicks/etc.
    // Server 331 (RPL_NOTOPIC) the topic is blank which we track by having a set timestamp of 0
    if (strncmp(tokens[1], "331", strlen(tokens[1])) == 0) {
      // Might as well blank our current topic value
      setchanneltopic(channels, tokens[3], "");
      // Set the topic timestamp to 0 which we use to determine an "unset" topic when new clients connect
      setchanneltopicwhotime(channels, tokens[3], "", "0");
    // Server 332 (RPL_TOPIC) set the channel topic
    } else if (strncmp(tokens[1], "332", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 332 (RPL_TOPIC) found, extracting topic and storing in channel struct.\n");
      // Need to extract the final parameter as topics can have spaces
      // Copy to a temporary string so we still have the original in case we need it
      char *topiccopy = strdup(str);
      extractfinalparameter(topiccopy);
      setchanneltopic(channels, tokens[3], topiccopy);
      free(topiccopy);
    // Server 333 (RPL_TOPICWHOTIME) set the channel topic setter and the time it was set
    } else if (strncmp(tokens[1], "333", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 333 (RPL_TOPICWHOTIME) found, extracting who and when, and storing in channel struct.\n");
      setchanneltopicwhotime(channels, tokens[3], tokens[4], tokens[5]);
    // Server 353 (RPL_NAMREPLY), relay to all clients if we've just JOINed the channel, or relay to any clients
    // who were pending RPL_NAMREPLYs if it's an existing channel.
    } else if (strncmp(tokens[1], "353", strlen(tokens[1])) == 0) {
      // It must be a new channel and we don't have the NAMES
      if (!channelgotnames(channels, tokens[4])) {
        debugprint(DEBUG_FULL, "Server 353 received for a new channel, sending to all clients.\n");
        // Relay to all clients
        sendtoallclients(clients, str, sourcefd, settings);
      } else {
        // We were already in the channel and have the NAMES
        debugprint(DEBUG_FULL, "Server 353 received for an existing channel, sending to all clients who were pending RPL_NAMREPLYs.\n");
        // If any clients were pending RPL_NAMREPLYs, send this on to them
        // TODO - Make sure clients only get the ones they were waiting on in case there are multiple conflicting requests going on at once
        for (int i = 0; i < MAXCLIENTS; i++) {
          if (clients[i].pendingnames > 0) {
            debugprint(DEBUG_FULL, "Sending 353 RPL_NAMREPLY for channel '%s' to client with fd '%d' who was pending %d RPL_NAMREPLYs.\n", tokens[4], clients[i].fd, clients[i].pendingnames);
            sendtoclient(clients[i].fd, str, clients, settings, 0);
          }
        }
      }
      return 1;
    // Server 366 (RPL_ENDOFNAMES), relay to all clients if we've just JOINed the channel, or relay to
    // and decrement from any clients who were waiting on RPL_NAMREPLY if it's an existing channel.
    } else if (strncmp(tokens[1], "366", strlen(tokens[1])) == 0) {
      int channelelement;
      // It must be a new channel and we don't have the NAMES
      if (!(channelelement = channelgotnames(channels, tokens[3]))) {
        debugprint(DEBUG_FULL, "Server 366 received for a new channel, sending to all clients and set as got names.\n");
        // We have the names now!
        channels[channelindex(channels, tokens[3])].gotnames = 1;
        // Relay to all clients
        sendtoallclients(clients, str, sourcefd, settings);
      } else {
        // We were already in the channel and have the NAMES
        // TODO - Make sure clients only get the ones they were waiting on in case there are multiple conflicting requests going on at once
        debugprint(DEBUG_FULL, "Server 366 received for an existing channel, sending to all clients who were pending RPL_NAMREPLYs and decrementing their pendingnames count.\n");
        for (int i = 0; i < MAXCLIENTS; i++) {
          if (clients[i].pendingnames > 0) {
            sendtoclient(clients[i].fd, str, clients, settings, 0);
            // And decrement their pendingnames count
            debugprint(DEBUG_FULL, "Decrementing pendingnames due 366 RPL_ENDOFNAMES to for channel '%s' to client with fd '%d' who was pending %d RPL_NAMREPLYs.\n",
                       tokens[3], clients[i].fd, clients[i].pendingnames);
            clients[i].pendingnames--;
            debugprint(DEBUG_FULL, "Client with fd '%d' has '%d' pendingnames left.\n", clients[i].fd, clients[i].pendingnames);
          }
        }
      }
      return 1;
    }

    // Server TOPIC received?  Update our local channel topic info then relay to clients.
    if (strncmp(tokens[1], "TOPIC", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server TOPIC found and it is: %s with length %zd!  Next token is '%s'.  Updating our local channel topic info.\n",
                 tokens[0], strlen(tokens[0]), tokens[2]);

      // Set the topic itself

      // Need to extract the final parameter as topics can have spaces
      // Copy to a temporary string so we still have the original in case we need it
      char *topiccopy = strdup(str);
      extractfinalparameter(topiccopy);
      setchanneltopic(channels, tokens[2], topiccopy);

      // Extract the author and get the current timestamp

      // Extract the topic setter from the prefix (Prefix of ":foo!bar@baz" means "foo" set the topic.)
      // Copy to a temporary string so we still have the original in case we need it
      char *prefixcopy = strdup(tokens[0]);
      extractnickfromprefix(prefixcopy);

      // Get the current time and manipulate it into a C string
      time_t timenow = time(NULL);
      int timenowlen = snprintf(NULL, 0, "%ld", timenow);
      char timenowstr[timenowlen + 1]; // TODO - Make this Year 2038 proof.
      snprintf(timenowstr, timenowlen + 1, "%ld", timenow);

      // Actually set the author and timestamp
      setchanneltopicwhotime(channels, tokens[2], prefixcopy, timenowstr);

      // And then finally relay to all clients
      sendtoallclients(clients, str, sourcefd, settings);

      // Write to replay log if replay logging enabled
      if (settings->replaylogging) {
        writereplayline(str, settings->basedir);
      }

      // Write to normal log if logging enabled
      if (settings->logging) {
        logline(str, ircdstate, settings->basedir, LOG_TOPIC);
      }

      free(topiccopy);
      free(prefixcopy);
      return 1;
    }

    // Server PRIVMSG received?  Relay to all clients and write to replay log.
    if (strncmp(tokens[1], "PRIVMSG", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server PRIVMSG found and it is: %s with length %zd!  Next token is '%s'.  Relaying to all clients.\n",
                 tokens[0], strlen(tokens[0]), tokens[2]);

      sendtoallclients(clients, str, sourcefd, settings);

      // Write to replay log if replay logging enabled
      if (settings->replaylogging) {
        writereplayline(str, settings->basedir);
      }

      // Write to normal log if logging enabled
      if (settings->logging) {
        logline(str, ircdstate, settings->basedir, LOG_PRIVMSG);
      }

      return 1;
    }

    // Server NICK received?
    // 1. Find out if it was us and change ircnick and nickuserhost if so
    // 2. Either way, relay to all clients
    if (strncmp(tokens[1], "NICK", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server NICK found and it is: %s with length %zd!  Next token is '%s'.  Updating records and relaying to all clients.\n",
                 tokens[0], strlen(tokens[0]), tokens[2]);

      // Was it us?
      // Copy to a temporary string so we still have the original in case we need it
      char *svrprefixcopy = strdup(tokens[0]);
      // Just get the nick for comparison
      extractnickfromprefix(svrprefixcopy);
      if (strncmp(ircdstate->ircnick, svrprefixcopy, strlen(ircdstate->ircnick)) == 0) {
        debugprint(DEBUG_FULL, "Server NICK: nick is ours ('%s' vs '%s').\n", svrprefixcopy, ircdstate->ircnick);
        // Make a copy of the old nickuserhost for updategreetings() below
        char *nickuserhostcpy = strdup(ircdstate->nickuserhost);
        // Update nickuserhost with the new :nick!user@host
        updatenickuserhost(ircdstate->nickuserhost, tokens[2]);
        debugprint(DEBUG_FULL, "Updated nickuserhost to '%s'.\n", ircdstate->nickuserhost);
        // Prepare to update ircnick and greetings strings
        // Temporary copy of new nickuserhost
        char *prefixcopy = strdup(ircdstate->nickuserhost);
        // Get nick from it
        extractnickfromprefix(prefixcopy);
        // Update greeting strings for relaying to new clients
        updategreetings(ircdstate->greeting001, ircdstate->greeting002, ircdstate->greeting003, ircdstate->greeting004,
                        ircdstate->greeting005a, ircdstate->greeting005b, ircdstate->greeting005c, ircdstate->nickuserhost,
                        nickuserhostcpy, tokens[2], ircdstate->ircnick);
        // Update our nick
        strcpy(ircdstate->ircnick, prefixcopy);
        debugprint(DEBUG_FULL, "Updated ircnick to '%s'.\n", ircdstate->ircnick);
        free(nickuserhostcpy);
        free(prefixcopy);
      }

      // Relay to all clients
      sendtoallclients(clients, str, sourcefd, settings);

      // Write to replay log if replay logging enabled
      if (settings->replaylogging) {
        writereplayline(str, settings->basedir);
      }

      // TODO - Is there a way to log nick changes to the normal log despite not tracking nicks in each channel?
      // (We do track channel names themselves.)

      free(svrprefixcopy);
      return 1;
    }

    // Server MODE received?  See what sort it is and act accordingly.
    if (strncmp(tokens[1], "MODE", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server MODE found and it is: %s with length %zd!  Next token is '%s'.  Analysing...\n",
                 tokens[1], strlen(tokens[1]), tokens[2]);

      // 4 tokens could be either our initial mode or a channel mode (or something else - TODO - what else?)
      if (counter == 4) {
        // Might be our initial mode (e.g. ":nick MODE nick :+iwz")
        char comparison[MAXDATASIZE];
        snprintf(comparison, MAXDATASIZE, ":%s MODE %s :", ircdstate->ircnick, ircdstate->ircnick);
        if (strncmp(str, comparison, strlen(comparison)) == 0) {
          // Looks like it!
          debugprint(DEBUG_FULL, "Our initial MODE found (%s), storing for later.\n", tokens[3]);
          // Store in ircdstate for when clients connect and relay to current clients.
          strcpy(ircdstate->mode, tokens[3]);

          // Relay to all current clients anyway - TODO - Necessary?
          sendtoallclients(clients, str, sourcefd, settings);

          return 1;
        }

        // Might be a channel mode (e.g. ":nick!user@host MODE #channel +s")
        if (tokens[2][0] == '#') {
          // Looks like it!  Tell all clients.
          debugprint(DEBUG_FULL, "Channel MODE found (%s %s), telling all clients.\n", tokens[2], tokens[3]);
          sendtoallclients(clients, str, sourcefd, settings);

          return 1;
        }
      }

      // Relay to all current clients if not processed by the above
      sendtoallclients(clients, str, sourcefd, settings);

      return 1;
    }

    // Server 324 (RPL_CHANNELMODEIS) received?  Send to any clients who requested a channel MODE.
    if (strncmp(tokens[1], "324", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 324 (RPL_CHANNELMODEIS) found and it is: %s with length %zd!  Sending to clients who are pending this.\n",
                 tokens[1], strlen(tokens[1]));

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingchannelmode == 1) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // And clear the pending flag
          clients[i].pendingchannelmode = 0;
        }
      }

      return 1;
    }

    // Server 367 (RPL_BANLIST) or 368 (RPL_ENDOFBANLIST) received?  Send to any clients who requested a ban MODE query.
    if (strncmp(tokens[1], "367", strlen(tokens[1])) == 0 || strncmp(tokens[1], "368", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 367 (RPL_BANLIST) or 368 (RPL_ENDOFBANLIST) found and it is: %s with length %zd!  Sending to clients who are pending this.\n",
                 tokens[1], strlen(tokens[1]));

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingban == 1) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // And clear the pending flag if it's 368 (RPL_ENDOFBANLIST)
          if (strncmp(tokens[1], "368", strlen(tokens[1])) == 0) {
            clients[i].pendingban = 0;
          }
        }
      }

      return 1;
    }

    // Server 329 (RPL_CREATIONTIME), 352 (RPL_WHOREPLY), or 315 (RPL_ENDOFWHO) received?  Send to any clients who requested a WHO.
    if (strncmp(tokens[1], "329", strlen(tokens[1])) == 0 || strncmp(tokens[1], "352", strlen(tokens[1])) == 0 || strncmp(tokens[1], "315", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 329 (RPL_CREATIONTIME), 352 (RPL_WHOREPLY), or 315 (RPL_ENDOFWHO) found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n",
                 tokens[1], strlen(tokens[1]));

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingwho == 1 && clients[i].fd) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // And clear the pending flag if it's 315 (RPL_ENDOFWHO)
          if (strncmp(tokens[1], "315", strlen(tokens[1])) == 0) {
            clients[i].pendingwho = 0;
          }
        }
      }

      return 1;
    }

    // Server 321 (RPL_LISTSTART), 322 (RPL_LIST), or 323 (RPL_LISTEND) received?  Send to any clients who requested a WHO.
    if (strncmp(tokens[1], "321", strlen(tokens[1])) == 0 || strncmp(tokens[1], "322", strlen(tokens[1])) == 0 || strncmp(tokens[1], "323", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 321 (RPL_LISTSTART), 322 (RPL_LIST), or 323 (RPL_LISTEND) found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n",
                 tokens[1], strlen(tokens[1]));

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendinglist == 1 && clients[i].fd) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // And clear the pending flag if it's 323 (RPL_LISTEND)
          if (strncmp(tokens[1], "323", strlen(tokens[1])) == 0) {
            clients[i].pendinglist = 0;
          }
        }
      }

      return 1;
    }

    // Server 307 (RPL_SUSERHOST), 311 (RPL_WHOISUSER), 312 (RPL_WHOISSERVER), 313 (RPL_WHOISOPERATOR), 317 (RPL_WHOISIDLE),
    // 319 (RPL_WHOISCHANNELS), 320 (RPL_WHOISSPECIAL), 378 (RPL_WHOISHOST), 379 (RPL_WHOISMODES), 671 (RPL_WHOISSECURE),
    // or 318 (RPL_ENDOFWHOIS) received?
    // Send to any clients who requested a WHOIS.
    if (strncmp(tokens[1], "307", strlen(tokens[1])) == 0 || strncmp(tokens[1], "311", strlen(tokens[1])) == 0 ||
        strncmp(tokens[1], "312", strlen(tokens[1])) == 0 || strncmp(tokens[1], "313", strlen(tokens[1])) == 0 ||
        strncmp(tokens[1], "317", strlen(tokens[1])) == 0 || strncmp(tokens[1], "319", strlen(tokens[1])) == 0 ||
        strncmp(tokens[1], "320", strlen(tokens[1])) == 0 || strncmp(tokens[1], "378", strlen(tokens[1])) == 0 ||
        strncmp(tokens[1], "379", strlen(tokens[1])) == 0 || strncmp(tokens[1], "671", strlen(tokens[1])) == 0 ||
        strncmp(tokens[1], "318", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 307 RPL_SUSERHOST, 311 RPL_WHOISUSER, 312 RPL_WHOISSERVER, 313 (RPL_WHOISOPERATOR), 317 RPL_WHOISIDLE, "
                 "319 RPL_WHOISCHANNELS, 320 (RPL_WHOISSPECIAL), 378 RPL_WHOISHOST, 379 (RPL_WHOISMODES), 671 (RPL_WHOISSECURE), "
                 "or 318 RPL_ENDOFWHOIS found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n", tokens[1],
                 strlen(tokens[1]));

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingwhois == 1 && clients[i].fd) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // And clear the pending flag if it's 318 RPL_ENDOFWHOIS
          if (strncmp(tokens[1], "318", strlen(tokens[1])) == 0) {
            clients[i].pendingwhois = 0;
          }
        }
      }

      return 1;
    }

    // Server 314 (RPL_WHOWASUSER), 406 (ERR_WASNOSUCHNICK), or 369 (RPL_ENDOFWHOWAS) received?
    // Send to any clients who requested a WHOWAS.
    if (strncmp(tokens[1], "314", strlen(tokens[1])) == 0 || strncmp(tokens[1], "406", strlen(tokens[1])) == 0 || strncmp(tokens[1], "369", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "314 (RPL_WHOWASUSER), 406 (ERR_WASNOSUCHNICK), or 369 (RPL_ENDOFWHOWAS) "
                 "found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n", tokens[1], strlen(tokens[1]));

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingwhowas == 1 && clients[i].fd) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // And clear the pending flag if it's 369 RPL_ENDOFWHOWAS
          if (strncmp(tokens[1], "369", strlen(tokens[1])) == 0) {
            clients[i].pendingwhowas = 0;
          }
        }
      }

      return 1;
    }

    // Server 312 (RPL_WHOISSERVER) received?  Check to see if anyone was pending a WHOIS or a WHOWAS and send to them, if not send to everyone.
    if (strncmp(tokens[1], "312", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 312 (RPL_WHOISSERVER) found and it is: %s with length %zd!  Sending to clients who are pending this or to everyone if nobody is.\n",
                 tokens[1], strlen(tokens[1]));

      int waspending = 0;

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingwhois == 1 || clients[i].pendingwhowas == 1) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // Note that we were pending this
          waspending = 1;
        }
      }

      // If no client was pending this, send to everyone
      if (!waspending) {
        sendtoallclients(clients, str, 0, settings);
      }

      return 1;
    }


    // Server 401 (ERR_NOSUCHNICK) received?  Check to see if anyone was pending a WHOIS and send to them,
    // if not send to everyone (401 was probably in reply to something else like a PRIVMSG).
    if (strncmp(tokens[1], "401", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server 401 (ERR_NOSUCHNICK) found and it is: %s with length %zd!  Sending to clients who are pending this or to everyone if nobody is.\n",
                 tokens[1], strlen(tokens[1]));

      int waspending = 0;

      // Relay to all pending clients
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].pendingwhois == 1) {
          sendtoclient(clients[i].fd, str, clients, settings, 0);
          // Note that we were pending this
          waspending = 1;
        }
      }

      // If no client was pending this, send to everyone
      if (!waspending) {
        sendtoallclients(clients, str, 0, settings);
      }

      return 1;
    }

    // Server 432 (ERR_ERRONEUSNICKNAME) or 433 (ERR_NICKNAMEINUSE) received?  See which nick we're on and try another.
    // (But only if we're not already registered with the real IRC server.)
    if ((strncmp(tokens[1], "432", strlen(tokens[1])) == 0 || strncmp(tokens[1], "433", strlen(tokens[1])) == 0) && !strlen(ircdstate->greeting004)) {
      debugprint(DEBUG_SOME, "Server 432 (ERR_ERRONEUSNICKNAME) or 433 (ERR_NICKNAMEINUSE) found and it is: %s with length %zd!  Trying another nick...\n",
                 tokens[1], strlen(tokens[1]));

      // Do we have both a nick2 and a nick3?  (And not tried autonick yet.)
      if (settings->ircnick2[0] && settings->ircnick3[0] && !ircdstate->autonicknum) {
        // Has nick3 already been tried?
        if (strncmp(ircdstate->ircnick, settings->ircnick3, strlen(settings->ircnick)) == 0) {
          // Then try autonick
          tryautonick(ircdstate);
        // Has nick2 already been tried?
        } else if (strncmp(ircdstate->ircnick, settings->ircnick2, strlen(settings->ircnick)) == 0) {
          // Then try nick3
          debugprint(DEBUG_SOME, "Trying nick3, nick2 was already tried.\n");
          strcpy(ircdstate->ircnick, settings->ircnick3);
        // Have neither been tried?
        } else {
          // Then try nick2
          debugprint(DEBUG_SOME, "Trying nick2, nick3 is also configured.\n");
          strcpy(ircdstate->ircnick, settings->ircnick2);
        }
      // Do we only have a nick2?  (And not tried autonick yet.)
      } else if (settings->ircnick2[0] && !ircdstate->autonicknum) {
        // Has it already been tried?
        if (strncmp(ircdstate->ircnick, settings->ircnick2, strlen(settings->ircnick)) == 0) {
          // Then try autonick
          tryautonick(ircdstate);
        } else {
          // Then try it
          debugprint(DEBUG_SOME, "Trying nick2, nick3 is not configured.\n");
          strcpy(ircdstate->ircnick, settings->ircnick2);
        }
      // Do we have neither?  (Or have already started autonick.)
      } else {
        // Then try autonick
          tryautonick(ircdstate);
      }

      // Set whichever one we settled on in the settings in case we reference settings later
      strcpy(settings->ircnick, ircdstate->ircnick);

      // Try it with the server
      char outgoingmsg[MAXDATASIZE];
      snprintf(outgoingmsg, MAXDATASIZE, "NICK %s", ircdstate->ircnick);
      // sourcefd = 0 as this is a trusted message
      sendtoserver(server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);

      return 1;
    }

    // Server CAP received?
    if (strncmp(tokens[1], "CAP", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server CAP found and it is: %s with length %zd!  Analysing...\n", tokens[1], strlen(tokens[1]));
      // If the server said "CAP <ournick> ACK :multi-prefix" then it must have approved our CAP multi-prefix request
      if (counter == 5) {
        if (strncmp(tokens[2], ircdstate->ircnick, strlen(tokens[2])) == 0 &&
            strncmp(tokens[3], "ACK", strlen(tokens[3])) == 0 &&
            strncmp(tokens[4], ":multi-prefix", strlen(tokens[4])) == 0) {
          ircdstate->capmultiprefix = 1;
        }
      }
      // We didn't handle it
      debugprint(DEBUG_FULL, "Unhandled server CAP response.\n");
    }

    // Server NOTICE received?  Handle and log if it's from a user, otherwise let pass through to default handler.
    if (strncmp(tokens[1], "NOTICE", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server NOTICE found and it is: %s with length %zd!  Analysing...\n", tokens[1], strlen(tokens[1]));
      // If the first token is a nick!user@host then it's probably from a user
      if (strstr(tokens[0], "!") != NULL && strstr(tokens[0], "@") != NULL) {
        debugprint(DEBUG_FULL, "Server NOTICE appears to be from a user, sending to all clients and logging.\n");

        sendtoallclients(clients, str, 0, settings);

        // Write to replay log if replay logging enabled
        if (settings->replaylogging) {
          writereplayline(str, settings->basedir);
        }

        // Write to normal log if logging enabled
        if (settings->logging) {
          logline(str, ircdstate, settings->basedir, LOG_PRIVMSG);
        }

        return 1;
      } else {
        debugprint(DEBUG_FULL, "Server NOTICE does not appear to be from a user, passing through.\n");
      }
    }

    // Server PONG received?  This is probably in response to our PING to see if we're still connected, discard it.
    if (strncmp(tokens[1], "PONG", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Server PONG found and it is: %s with length %zd!  Discarding.\n", tokens[1], strlen(tokens[1]));
      return 1;
    }
  }

  // We didn't process anything so return 0
  return 0;
}

// Process an IRC message that came from a client.
// Return 1 if we processed it, or 0 if we didn't.
int processclientmessage(SSL *server_ssl, char *str, struct client *clients, int sourcefd, struct ircdstate *ircdstate,
                         struct channel *channels, struct settings *settings, char tokens[MAXTOKENS][MAXDATASIZE], int counter, struct clientcodes *clientcodes) {
  // PASS received?  User is trying to log in, check their password.
  if (strncasecmp(tokens[0], "PASS", strlen(tokens[0])) == 0) {
    if (checkpassword(tokens[1], settings)) {
      debugprint(DEBUG_FULL, "Password accepted!  Setting client %s with fd %d to authenticated.\n", clients[arrindex(clients, sourcefd)].remoteip, sourcefd);
      // Find the client in the clients array and set them as authenticated
      for (int i = 0; i < MAXCLIENTS; i++) {
        if (clients[i].fd == sourcefd) {
          // Found client in array, set to authenticated
          clients[i].authed = 1;
          debugprint(DEBUG_FULL, "Found and authenticated fd in arr_authed.\n");
          // Alert other clients about the successful authentication
          char alertmsg[MAXDATASIZE];
          if (!snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :blabouncer: new client %s has successfully authenticated.", ircdstate->ircnick,
              clients[arrindex(clients, sourcefd)].remoteip)) {
            fprintf(stderr, "Error while preparing authentication success NOTICE!\n");
            debugprint(DEBUG_CRIT, "Error while preparing authentication success NOTICE!\n");
            alertmsg[0] = '\0';
          }
          // "except" the current fd - we can use this as "except/sourcefd" since we set them as authed just above
          sendtoallclients(clients, alertmsg, sourcefd, settings);
        }
      }
    } else {
      debugprint(DEBUG_SOME, "Password rejected, disconnecting client %s with fd %d.\n", clients[arrindex(clients, sourcefd)].remoteip, sourcefd);
      disconnectclient(sourcefd, clients, ircdstate, settings, clientcodes);
      // Alert other clients about the failed authentication
      char alertmsg[MAXDATASIZE];
      if (!snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :blabouncer: new client %s has failed to authenticate.", ircdstate->ircnick,
          clients[arrindex(clients, sourcefd)].remoteip)) {
        fprintf(stderr, "Error while preparing authentication failure NOTICE!\n");
        debugprint(DEBUG_CRIT, "Error while preparing authentication failure NOTICE!\n");
        alertmsg[0] = '\0';
      }
      // "except" 0 since we trust this message
      sendtoallclients(clients, alertmsg, 0, settings);
    }

    return 1;
  }

  // CAP received?  Clients can send CAP before PASS so we have to deal with this even if they are not authenticated yet.
  if (strncasecmp(tokens[0], "CAP", strlen(tokens[0])) == 0) {
    // But only do something if the real server told us it had a CAP (only multi-prefix for now)
    if (ircdstate->capmultiprefix == 1) {
      debugprint(DEBUG_FULL, "Client CAP received and the server supports CAPs, continuing.\n");
    } else {
      debugprint(DEBUG_FULL, "Client CAP received but the server doesn't support CAPs, returning.\n");
      return 1;
    }
    // Get the real IRC server name from greeting001
    // They are now pending CAP negotiation
    clients[arrindex(clients, sourcefd)].pendingcap = 1;
    char outgoingmsg[MAXDATASIZE];
    // If client is requesting CAP list, send it...
    if (strncasecmp(tokens[1], "LS", strlen(tokens[1])) == 0) {
      if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s CAP * LS :multi-prefix", ircdstate->ircdname)) {
        fprintf(stderr, "Error while preparing CAP LS response!\n");
        debugprint(DEBUG_CRIT, "Error while preparing CAP LS response!\n");
        outgoingmsg[0] = '\0';
      }
      // ...even if unauthenticated
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 1);
      return 1;
    // If client is requesting a CAP...
    } else if (strncasecmp(tokens[1], "REQ", strlen(tokens[1])) == 0) {
      // ...and it is "multi-prefix", send it
      if (strncasecmp(tokens[2], ":multi-prefix", strlen(tokens[2])) == 0) {
        if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s CAP %s ACK :multi-prefix ", ircdstate->ircdname, ircdstate->ircnick)) {
          fprintf(stderr, "Error while preparing CAP ACK response!\n");
          debugprint(DEBUG_CRIT, "Error while preparing CAP ACK response!\n");
          outgoingmsg[0] = '\0';
        }
        // ...even if unauthenticated
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 1);
        return 1;
      }
    // If client is finishing CAP negotiation then mark them as so
    } else if (strncasecmp(tokens[1], "END", strlen(tokens[1])) == 0) {
      clients[arrindex(clients, sourcefd)].pendingcap = -1;
    }
  }

  // We're past PASS in the list of possible commands, so ignore
  // anything else the client says if they are not authenticated yet.
  if (!clients[arrindex(clients, sourcefd)].authed) {
    debugprint(DEBUG_CRIT, "Ignoring client command '%s' from sourcefd '%d' as not authenticated yet.\n", tokens[0], sourcefd);
    return 1;
  }

  // USER received and not pending CAP negotiation during registration?
  // Or client has just finished negotiating CAP (pendingcap = -1)?
  // If so, assume this is a new client connecting and catch them on up on the state
  if ((strncasecmp(tokens[0], "USER", strlen(tokens[0])) == 0 && clients[arrindex(clients, sourcefd)].pendingcap == 0) || clients[arrindex(clients, sourcefd)].pendingcap == -1) {
    // Somewhere to store the several strings we will need to build and send
    char outgoingmsg[MAXDATASIZE]; // String to send to client

    // If registering then they must no longer be pending CAP negotiation
    clients[arrindex(clients, sourcefd)].pendingcap = 0;

    // Tell the client to go away if we aren't registered with the real server yet as defined by the last greeting not being set yet
    if (!strlen(ircdstate->greeting004)) {
      sendtoclient(sourcefd, "Sorry, we aren't registered with a real IRC server yet.", clients, settings, 0);
      disconnectclient(sourcefd, clients, ircdstate, settings, clientcodes);
      return 1;
    }

    // Send IRC greeting strings (001/RPL_WELCOME, 002/RPL_YOURHOST, 003/RPL_CREATED, 004/RPL_MYINFO, 005/RPL_ISUPPORT) to client
    snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting001);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting002);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting003);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting004);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    if (ircdstate->greeting005a[0]) {
      snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting005a);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    }
    if (ircdstate->greeting005b[0]) {
      snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting005b);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    }
    if (ircdstate->greeting005c[0]) {
      snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstate->greeting005c);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    }

    // Send our own greeting message
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Welcome to blabouncer version %s!", ircdstate->ircnick, VERSION);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Blabouncer commands are all prefixed with BLABOUNCER which you can usually send using \"/QUOTE BLABOUNCER\"", ircdstate->ircnick);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Valid blabouncer commands are:", ircdstate->ircnick);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER REPLAY [[[days:]hours:]minutes]\" (To replay a given length of time of replay log.)", ircdstate->ircnick);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER REHASH\" (To reload settings from the configuration file, see README for which settings can be reloaded.)", ircdstate->ircnick);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER CLIENTCODE [clientcode]\" (To set an identifier for the current client for auto replaying just what this client has missed.)", ircdstate->ircnick);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER QUIT [quit message]\" (To quit blabouncer, optionally sending [quit message] to the server.)", ircdstate->ircnick);
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

    // Get the channel count so we can enumerate over all channels.
    // Storing separately so we can skip over blank channels.
    int channelcount = getchannelcount(channels);
    // Set the client as pending RPL_NAMREPLYs for 'channelcount' channels
    debugprint(DEBUG_FULL, "Setting pendingnames to '%d' for client with fd '%d'.\n", channelcount, sourcefd);
    clients[arrindex(clients, sourcefd)].pendingnames = channelcount;

    // Get client to join channels, and tell client about those channels
    for (int i = 0; i < channelcount; i++) {
      debugprint(DEBUG_FULL, "JOINing channel[%d] out of %d.\n", i, channelcount);
      // Skip this one and increment channelcount if it's a blank channel
      if (!channels[i].name[0]) {
          debugprint(DEBUG_FULL, "Skipping channel[%d], incrementing channelcount.\n", i);
          channelcount++;
          continue;
      }

      // Get client to join channels
      if (!snprintf(outgoingmsg, MAXDATASIZE, "%s JOIN :%s", ircdstate->nickuserhost, channels[i].name)) {
        fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses!\n");
        debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses!\n");
        return 0;
      }
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

      // Send topic (or lack thereof) to client
      // If there isn't one set (we guess this if topic timestamp is 0), send 331 RPL_NOTOPIC
      if (strncmp(channels[i].topicwhen, "0", 1) == 0) {
        // Prepare the no topic message...
        if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s 331 %s %s :No topic is set.", ircdstate->ircdname, ircdstate->ircnick, channels[i].name)) {
          fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses, 331 RPL_NOTOPIC!\n");
          debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses, 331 RPL_NOTOPIC!\n");
          return 0;
        }
        // ..and send it to the client
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      // If there is one set, send 332 RPL_TOPIC and 333 RPL_TOPICWHOTIME
      } else {
        // Prepare the topic message...
        if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s 332 %s %s :%s", ircdstate->ircdname, ircdstate->ircnick, channels[i].name, channels[i].topic)) {
          fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses, 332 RPL_TOPIC!\n");
          debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses, 332 RPL_TOPIC!\n");
          return 0;
        }
        // ..and send it to the client
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

        // Next prepare the topic who/when message...
        if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s 333 %s %s %s %s", ircdstate->ircdname, ircdstate->ircnick, channels[i].name, channels[i].topicwho, channels[i].topicwhen)) {
          fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses, 333 RPL_TOPICWHOTIME!\n");
          debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses, 333 RPL_TOPICWHOTIME!\n");
          return 0;
        }
        // ..and send it to the client
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      }

      // Get the latest RPL_NAMREPLY for this channel to relay to the client when it arrives
      char namesreq[MAXDATASIZE];
      snprintf(namesreq, MAXDATASIZE, "NAMES %s", channels[i].name);
      sendtoserver(server_ssl, namesreq, strlen(namesreq), 0, clients, settings);
    }

    // Send our mode to the client (if we have one)
    if (strlen(ircdstate->mode) > 0) {
      if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s MODE %s %s", ircdstate->ircnick, ircdstate->ircnick, ircdstate->mode)) {
        fprintf(stderr, "Error while preparing USER just connected, MODE response!\n");
        debugprint(DEBUG_CRIT, "Error while preparing USER just connected, MODE response!\n");
        return 0;
      }
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    }

    // Set the client as registered
    clients[arrindex(clients, sourcefd)].registered = 1;

    // Catch the client up with the default number of seconds of replay
    if (!doautoreplay(sourcefd, clients, settings, ircdstate, channels)) {
      snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstate->ircnick);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
    }

    // And record the time of the last client registration
    ircdstate->clientchangetime = time(NULL);

    return 1;
  }

  // Pretty much ignore anything else the client says if it's not registered yet,
  // as the first thing we want to hear is either PASS or USER
  if (!clients[arrindex(clients, sourcefd)].registered) {
    debugprint(DEBUG_SOME, "Ignoring client command '%s' from sourcefd '%d' as not registered yet.\n", tokens[0], sourcefd);
    return 1;
  }

  // Client PING received?  If so, send a PONG back with the next element as the argument.
  if (strncasecmp(tokens[0], "PING", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client PING found and it is: %s with length %zd!  Sending response...\n", tokens[0], strlen(tokens[0]));

    char outgoingmsg[MAXDATASIZE]; // String to send to client
    if (!snprintf(outgoingmsg, MAXDATASIZE, "PONG %s", tokens[1])) { // TODO - Make sure tokens[1] actually has a token
      fprintf(stderr, "Error while preparing PONG response!\n");
      debugprint(DEBUG_CRIT, "Error while preparing PONG response!\n");
      outgoingmsg[0] = '\0';
    }
    sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

    // We processed something so return true
    return 1;
  }

  // TODO - Ignoring CAP for now so as not to confuse other clients, but we should probably query the server then relay the response to the client
  if (strncasecmp(tokens[0], "CAP", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client CAP found and it is: %s with length %zd!  Ignoring completely for now - TODO - do something useful!\n", tokens[0], strlen(tokens[0]));
    return 1;
  }

  // Just send NICK to server and let it change all clients' nicks if needed
  if (strncasecmp(tokens[0], "NICK", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client NICK found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // If PRIVMSG received, send to server, but also reformat and send to all other clients and log to replay file.
  if (strncasecmp(tokens[0], "PRIVMSG", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client PRIVMSG found and it is: %s with length %zd!  Sending to server then back to other clients...\n", tokens[0], strlen(tokens[0]));
    // Send original request straight to server
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);

    // If it seems to be a CTCP VERSION request, just send to the server (CTCP requests are delimited with \1)
    if (counter == 3 && strncmp(tokens[2], ":\1VERSION\1", strlen(tokens[2])) == 0) {
      debugprint(DEBUG_FULL, "Client PRIVMSG looked like a CTCP VERSION request, so not sending to other clients.\n");
      return 1;
    }

    // Rebuild to full PRIVMSG string and relay to all other clients
    char outgoingmsg[MAXDATASIZE]; // String to send to client

    if (!snprintf(outgoingmsg, MAXDATASIZE, "%s %s", ircdstate->nickuserhost, str)) {
      fprintf(stderr, "Error while preparing PRIVMSG relay from another bouncer client.\n");
      debugprint(DEBUG_CRIT, "Error while preparing PRIVMSG relay from another bouncer client.\n");
      return 0;
    }
    // Send to all except source client
    sendtoallclients(clients, outgoingmsg, sourcefd, settings);

    // Write to replay log if replay logging enabled
    if (settings->replaylogging) {
      writereplayline(outgoingmsg, settings->basedir);
    }

    // Write to normal log if logging enabled
    if (settings->logging) {
      logline(outgoingmsg, ircdstate, settings->basedir, LOG_PRIVMSG);
    }

    return 1;
  }

  // Just send JOIN to server and let it talk back to clients as required
  if (strncasecmp(tokens[0], "JOIN", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client JOIN found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Don't do anything with QUIT, just let the client go - TODO: Let another clients know with a NOTICE or something
  // A client has QUIT, so disconnect (close) them and don't do anything else for now - TODO: Let another clients know with a NOTICE or something
  if (strncasecmp(tokens[0], "QUIT", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client QUIT found from fd %d and it is: %s with length %zd!  Disconnecting that fd.\n", sourcefd, tokens[0], strlen(tokens[0]));
    disconnectclient(sourcefd, clients, ircdstate, settings, clientcodes);
    return 1;
  }

  // Just send PART to server and let it talk back to clients as required
  if (strncasecmp(tokens[0], "PART", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client PART found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Just send TOPIC to server and let it talk back to clients as required
  if (strncasecmp(tokens[0], "TOPIC", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client TOPIC found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Take note of what sort of MODE was requested, mark the client as waiting for the reply (so not all clients get it)
  // Send it to the server either way and let it talk back to the requesting client as required
  if (strncasecmp(tokens[0], "MODE", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client MODE found and it is: %s with length %zd!  Analysing...\n", tokens[0], strlen(tokens[0]));
    // Is it a ban MODE request (MODE #channel b)?
    if (counter >= 3 && strncmp(tokens[2], "b", strlen("b")) == 0) {
      debugprint(DEBUG_FULL, "Ban MODE request received, marking as pending.\n");
      clients[arrindex(clients, sourcefd)].pendingban = 1;
    } else if (counter == 2) {
      // Assume a normal channel mode request (MODE #channel) - TODO - What if it isn't!?
      debugprint(DEBUG_FULL, "Assuming channel MODE request received, marking as pending.\n");
      clients[arrindex(clients, sourcefd)].pendingchannelmode = 1;
    }

    // Either way, send it on the server
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // WHO requested, mark the client as waiting for the reply (so not all clients get it) and send it on the server
  if (strncasecmp(tokens[0], "WHO", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client WHO found and it is: %s with length %zd!  Marking as pending.\n", tokens[0], strlen(tokens[0]));
    clients[arrindex(clients, sourcefd)].pendingwho = 1;

    // Either way, send it on the server
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // LIST requested, mark the client as waiting for the reply (so not all clients get it) and send it on the server
  if (strncasecmp(tokens[0], "LIST", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client LIST found and it is: %s with length %zd!  Marking as pending.\n", tokens[0], strlen(tokens[0]));
    clients[arrindex(clients, sourcefd)].pendinglist = 1;

    // Either way, send it on the server
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Client WHOIS received, send straight on to server and mark the client as pending the response
  if (strncasecmp(tokens[0], "WHOIS", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client WHOIS found and it is: %s with length %zd!  Sending to server and setting client as pending.\n", tokens[0], strlen(tokens[0]));
    clients[arrindex(clients, sourcefd)].pendingwhois = 1;
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Client WHOWAS received, send straight on to server and mark the client as pending the response
  if (strncasecmp(tokens[0], "WHOWAS", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client WHOWAS found and it is: %s with length %zd!  Sending to server and setting client as pending.\n", tokens[0], strlen(tokens[0]));
    clients[arrindex(clients, sourcefd)].pendingwhowas = 1;
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Client NOTICE received
  if (strncasecmp(tokens[0], "NOTICE", strlen(tokens[0])) == 0) {

    // Rebuild to full NOTICE string including our nick!user@host for logging
    char fullmsg[MAXDATASIZE];

    if (!snprintf(fullmsg, MAXDATASIZE, "%s %s", ircdstate->nickuserhost, str)) {
      fprintf(stderr, "Error while preparing NOTICE string for logging.\n");
      debugprint(DEBUG_CRIT, "Error while preparing NOTICE string for logging.\n");
      return 0;
    }

    // Write to replay log if replay logging enabled
    if (settings->replaylogging) {
      writereplayline(fullmsg, settings->basedir);
    }

    // Write to normal log if logging enabled
    if (settings->logging) {
      logline(fullmsg, ircdstate, settings->basedir, LOG_PRIVMSG);
    }

    // If it's a CTCP VERSION response then only send to the server (CTCP requests are delimited with \1)
    if (counter >= 3 && strncmp(tokens[2], ":\1VERSION", strlen(tokens[2])) == 0) {
      debugprint(DEBUG_FULL, "Client NOTICE looked like a CTCP VERSION response, so just sending to the server.\n");
      sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
      return 1;
    }

    // If it wasn't a CTCP VERSION response, then let this fall through to the default unhandled action by not returning here
  }

  // Client PROTOCTL received
  if (strncasecmp(tokens[0], "PROTOCTL", strlen(tokens[0])) == 0) {
    // If it's a PROTOCTL NAMESX, just pass to the server - TODO - Maybe deal with either PROTCTL NAMEX or multi-prefix CAP for mode prefixes?
    if (strncasecmp(tokens[1], "NAMESX", strlen(tokens[1])) == 0) {
      debugprint(DEBUG_FULL, "Client PROTOCTL NAMESX found!  Sending to server.\n", tokens[0], strlen(tokens[0]));
      sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
      return 1;
    }
  }

  // Client OPER received, send straight on to server
  if (strncasecmp(tokens[0], "OPER", strlen(tokens[0])) == 0) {
    debugprint(DEBUG_FULL, "Client OPER found and it is: %s with length %zd!  Sending to server..\n", tokens[0], strlen(tokens[0]));
    sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
    return 1;
  }

  // Custom BLABOUNCER command received
  // Case insensitive comparisons here since clients won't be recognising and uppercasing these commands
  if (strncasecmp(tokens[0], "BLABOUNCER", strlen(tokens[0])) == 0) {
    char outgoingmsg[MAXDATASIZE];
    debugprint(DEBUG_FULL, "Client BLABOUNCER found and it is: %s with length %zd!\n", tokens[1], strlen(tokens[1]));
    // REPLAY received, send the requested length of replay time to the client
    if (strncasecmp(tokens[1], "REPLAY", strlen("REPLAY")) == 0 && counter == 3) {
      debugprint(DEBUG_FULL, "Client BLABOUNCER REPLAY (custom blabouncer command) found and it is: %s with length %zd!\n", tokens[1], strlen(tokens[1]));

      // Split the request into days:hours:minutes

      // Track which colon-separated token within this request we're on
      int timecounter = 0;

      // Build array of colon-separated tokens
      char timetokens[MAXTOKENS][MAXDATASIZE];
      // Copy to a temporary string so we still have the original in case it's not processed
      char *timestrcopy = strdup(tokens[2]);
      // Keep track of initial pointer for free()ing later
      char *timestrcopyPtr = timestrcopy;

      char *timetoken;
      while ((timetoken = strsep(&timestrcopy, ":")) != NULL) {
        if (*timetoken == '\0') continue; // Skip consecutive matches
        if (timecounter >= MAXTOKENS) break; // Too many tokens
        debugprint(DEBUG_FULL, "Time token: \"%s\", length %zd.\n", timetoken, strlen(timetoken));
        // Copy into the token array (strlen + 1 to get the NULL terminator)
        strncpy(timetokens[timecounter], timetoken, strlen(timetoken) + 1);
        timecounter++;
      }

      // Make sure we don't have more than three (d:h:m) components
      if (timecounter > 3) {
        debugprint(DEBUG_SOME, "Too many time components requested by REPLAY command.  Telling client.\n");
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Too many time components requestd by REPLAY command.  Expected up to three (days:hours:minutes).", ircdstate->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        free(timestrcopyPtr);
        return 1;
      }

      // Make sure all the components are numbers
      for (int i = 0; i < timecounter; i++) {
        // Temporary number and pointer for checking errors
        long check;
        char *str_end;
        errno = 0;
        check = strtol(timetokens[i], &str_end, 10);
        if (str_end == timetokens[i] || ((check == LONG_MAX || check == LONG_MIN) && errno == ERANGE)) {
          debugprint(DEBUG_SOME, "Invalid number '%s' requested by REPLAY command.  Telling client.\n", timetokens[i]);
          if (!snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Invalid number '%s' requested by REPLAY command.", ircdstate->ircnick, timetokens[i])) {
            fprintf(stderr, "Error while preparing REPLAY invalid number response!\n");
            debugprint(DEBUG_CRIT, "Error while preparing REPLAY invalid number response!\n");
            outgoingmsg[0] = '\0';
          }
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          free(timestrcopyPtr);
          return 1;
        }
      }

      // How many seconds we're going to replay
      int replayseconds = 0;

      // If d:h:m provided
      if (timecounter == 3) {
        replayseconds += 86400 * strtol(timetokens[0], NULL, 10);
        replayseconds += 3600 * strtol(timetokens[1], NULL, 10);
        replayseconds += 60 * strtol(timetokens[2], NULL, 10);
      }
      // If h:m provided
      if (timecounter == 2) {
        replayseconds += 3600 * strtol(timetokens[0], NULL, 10);
        replayseconds += 60 * strtol(timetokens[1], NULL, 10);
      }
      // If m provided
      if (timecounter == 1) {
        replayseconds += 60 * strtol(timetokens[0], NULL, 10);
      }

      debugprint(DEBUG_FULL, "Replaying '%s' which is '%d' seconds.\n", tokens[2], replayseconds);

      if (!doreplay(sourcefd, replayseconds, clients, settings, ircdstate, channels)) {
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstate->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      }
      free(timestrcopyPtr);
      return 1;
    // QUIT received, send QUIT message to server and exit cleanly
    } else if (strncasecmp(tokens[1], "QUIT", strlen("QUIT")) == 0) {
      debugprint(DEBUG_SOME, "Client BLABOUNCER QUIT found and it is: %s with length %zd!\n", tokens[1], strlen(tokens[1]));
      // Combine "QUIT :" with any optional quit message the user provided
      if (counter > 2) {
        // Any optional quit message comes 16 characters after the start of the string ("BLABOUNCER QUIT " is 16 characters)
        cleanexit(server_ssl, clients, sourcefd, ircdstate, settings, str + 16);
      } else {
        cleanexit(server_ssl, clients, sourcefd, ircdstate, settings, "");
      }
    // REHASH received, re-read the configuration file and let rehash() to the appropriate things
    } else if (strncasecmp(tokens[1], "REHASH", strlen("REHASH")) == 0) {
      debugprint(DEBUG_SOME, "Client BLABOUNCER REHASH found and it is: %s with length %zd!  Attempting rehash...\n", tokens[1], strlen(tokens[1]));

      // TODO - This code is duplicated between here and SIGHUP handling

      char failuremsg[MAXDATASIZE];
      failuremsg[0] = '\0';

      // Try to rehash...
      if (!rehash(settings, failuremsg)) {
        // ...or log and tell client if it failed
        debugprint(DEBUG_CRIT, "REHASH failed: %s.\n", failuremsg);
        if (!snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :REHASH failed: %s.", ircdstate->ircnick, failuremsg)) {
          debugprint(DEBUG_CRIT, "Error while preparing REHASH failure message response!\n");
          outgoingmsg[0] = '\0';
        }
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      } else {
        // ...or tell all clients it worked
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :REHASH complete!", ircdstate->ircnick);
        sendtoallclients(clients, outgoingmsg, 0, settings);
      }

      return 1;
    // CLIENTCODE received, set the provided string as the client code for handling auto replays for when this client code is next seen
    } else if (strncasecmp(tokens[1], "CLIENTCODE", strlen("CLIENTCODE")) == 0 && counter == 3) {
      debugprint(DEBUG_FULL, "Client BLABOUNCER CLIENTCODE found and it is: %s %s!  Setting as this client's client code.\n", tokens[1], tokens[2]);

      // Make sure replaymode = "perclient" is set
      if (strcmp(settings->replaymode, "perclient")) {
        debugprint(DEBUG_SOME, "CLIENTCODE requested but replaymode not set to \"perclient\".\n");
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :CLIENTCODE requested but replaymode not set to \"perclient\".", ircdstate->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        return 1;
      }

      // Make sure the client code length is good
      if (strlen(tokens[2]) < 1 || strlen(tokens[2]) > CLIENTCODELEN - 1) {
        debugprint(DEBUG_SOME, "Invalid CLIENTODE length.\n");
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Invalid CLIENTODE length.  Must be 1 to %d characters.", ircdstate->ircnick, CLIENTCODELEN - 1);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        return 1;
      }

      // Register the client code (if it doesn't already exist)
      int ret = addclientcode(sourcefd, tokens[2], clientcodes, clients);
      if (ret == -1) {
        // Something went wrong
        debugprint(DEBUG_CRIT, "error: addclientcode() returned 0.\n");
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Problem registering client code.", ircdstate->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        return 1;
      } else if (ret == 0) {
        // If it did already exist, do a replay of everything since this client code last disconnected
        int codetime = getclientcodetime(tokens[2], clientcodes);
        if (!codetime) {
          debugprint(DEBUG_CRIT, "Error finding last disconnect time of this client code!\n");
          snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Error finding last disconnect time of this client code!", ircdstate->ircnick);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          return 1;
        }
        if (!doreplay(sourcefd, time(NULL) - codetime, clients, settings, ircdstate, channels)) {
          snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstate->ircnick);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          return 1;
        }
      }

      return 1;
    // Unrecognised BLABOUNCER command received (or a BLABOUNCER HELP command), send some help instructions
    } else {
      // Debug and NOTICE an unrecognised command error unless the command was "HELP"
      if (strncasecmp(tokens[1], "HELP", strlen("HELP")) != 0) {
        debugprint(DEBUG_SOME, "Client BLABOUNCER unrecognised command found and it is: %s with length %zd!  Sending a help message.\n", tokens[1], strlen(tokens[1]));
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unrecognised BLABOUNCER command received.  Valid commands are:", ircdstate->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      }
      snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER REPLAY [[[days:]hours:]minutes]\" (To replay a given length of time of replay log.)", ircdstate->ircnick);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER REHASH\" (To reload settings from the configuration file, see README for which settings can be reloaded.)", ircdstate->ircnick);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER CLIENTCODE [clientcode]\" (To set an identifier for the current client for auto replaying just what this client has missed.)", ircdstate->ircnick);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER QUIT [quit message]\" (To quit blabouncer, optionally sending [quit message] to the server.)", ircdstate->ircnick);
      sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
      return 1;
    }
  }

  // We didn't process anything so return 0
  return 0;
}