summaryrefslogtreecommitdiff
path: root/src/inspircd.cpp
blob: eb8894c4342f3e81653d54427ebc7f5e6f1522b8 (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
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"
#include "configreader.h"
#include <signal.h>

#ifndef WIN32
#include <dirent.h>
#include <unistd.h>
#include <sys/resource.h>
#include <dlfcn.h>
#include <getopt.h>
/* This is just to be completely certain that the change which fixed getrusage on RH7 doesn't break anything else -- Om */  
#ifndef RUSAGE_SELF
#define RUSAGE_SELF 0
#endif
#endif

#include <exception>
#include <fstream>
#include "modules.h"
#include "mode.h"
#include "xline.h"
#include "socketengine.h"
#include "inspircd_se_config.h"
#include "socket.h"
#include "typedefs.h"
#include "command_parse.h"
#include "exitcodes.h"

#ifdef WIN32

/* This MUST remain static and delcared outside the class, so that WriteProcessMemory can reference it properly */
static DWORD owner_processid = 0;

DWORD WindowsForkStart(InspIRCd * Instance)
{
	/* Windows implementation of fork() :P */

	char module[MAX_PATH];
	if(!GetModuleFileName(NULL, module, MAX_PATH))
	{
		printf("GetModuleFileName() failed.\n");
		return false;
	}

	STARTUPINFO startupinfo;
	PROCESS_INFORMATION procinfo;
	ZeroMemory(&startupinfo, sizeof(STARTUPINFO));
	ZeroMemory(&procinfo, sizeof(PROCESS_INFORMATION));

	// Fill in the startup info struct
	GetStartupInfo(&startupinfo);

	/* Default creation flags create the processes suspended */
	DWORD startupflags = CREATE_SUSPENDED;

	/* On windows 2003/XP and above, we can use the value
	 * CREATE_PRESERVE_CODE_AUTHZ_LEVEL which gives more access
	 * to the process which we may require on these operating systems.
	 */
	OSVERSIONINFO vi;
	vi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
	GetVersionEx(&vi);
	if ((vi.dwMajorVersion >= 5) && (vi.dwMinorVersion > 0))
		startupflags |= CREATE_PRESERVE_CODE_AUTHZ_LEVEL;

	// Launch our "forked" process.
	BOOL bSuccess = CreateProcess ( module,	// Module (exe) filename
		strdup(GetCommandLine()),	// Command line (exe plus parameters from the OS)
						// NOTE: We cannot return the direct value of the
						// GetCommandLine function here, as the pointer is
						// passed straight to the child process, and will be
						// invalid once we exit as it goes out of context.
						// strdup() seems ok, though.
		0,				// PROCESS_SECURITY_ATTRIBUTES
		0,				// THREAD_SECURITY_ATTRIBUTES
		TRUE,				// We went to inherit handles.
		startupflags,			// Allow us full access to the process and suspend it.
		0,				// ENVIRONMENT
		0,				// CURRENT_DIRECTORY
		&startupinfo,			// startup info
		&procinfo);			// process info

	if(!bSuccess)
	{
		printf("CreateProcess() error: %s\n", dlerror());
		return false;
	}

	// Set the owner process id in the target process.
	SIZE_T written = 0;
	DWORD pid = GetCurrentProcessId();
	if(!WriteProcessMemory(procinfo.hProcess, &owner_processid, &pid, sizeof(DWORD), &written) || written != sizeof(DWORD))
	{
		printf("WriteProcessMemory() failed: %s\n", dlerror());
		return false;
	}

	// Resume the other thread (let it start)
	ResumeThread(procinfo.hThread);

	// Wait for the new process to kill us. If there is some error, the new process will end and we will end up at the next line.
	WaitForSingleObject(procinfo.hProcess, INFINITE);

	// If we hit this it means startup failed, default to 14 if this fails.
	DWORD ExitCode = 14;
	GetExitCodeProcess(procinfo.hProcess, &ExitCode);
	CloseHandle(procinfo.hThread);
	CloseHandle(procinfo.hProcess);
	return ExitCode;
}

void WindowsForkKillOwner(InspIRCd * Instance)
{
	HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, owner_processid);
	if(!hProcess || !owner_processid)
	{
		printf("Could not open process id %u: %s.\n", owner_processid, dlerror());
		Instance->Exit(14);
	}

	// die die die
	if(!TerminateProcess(hProcess, 0))
	{
		printf("Could not TerminateProcess(): %s\n", dlerror());
		Instance->Exit(14);
	}

	CloseHandle(hProcess);
}

#endif

using irc::sockets::NonBlocking;
using irc::sockets::Blocking;
using irc::sockets::insp_ntoa;
using irc::sockets::insp_inaddr;
using irc::sockets::insp_sockaddr;

InspIRCd* SI = NULL;

/* Burlex: Moved from exitcodes.h -- due to duplicate symbols */
const char* ExitCodes[] =
{
		"No error", /* 0 */
		"DIE command", /* 1 */
		"execv() failed", /* 2 */
		"Internal error", /* 3 */
		"Config file error", /* 4 */
		"Logfile error", /* 5 */
		"POSIX fork failed", /* 6 */
		"Bad commandline parameters", /* 7 */
		"No ports could be bound", /* 8 */
		"Can't write PID file", /* 9 */
		"SocketEngine could not initialize", /* 10 */
		"Refusing to start up as root", /* 11 */
		"Found a <die> tag!", /* 12 */
		"Couldn't load module on startup", /* 13 */
		"Could not create windows forked process", /* 14 */
		"Received SIGTERM", /* 15 */
};

void InspIRCd::AddServerName(const std::string &servername)
{
	servernamelist::iterator itr = servernames.begin();
	for(; itr != servernames.end(); ++itr)
		if(**itr == servername)
			return;

	string * ns = new string(servername);
	servernames.push_back(ns);
}

const char* InspIRCd::FindServerNamePtr(const std::string &servername)
{
	servernamelist::iterator itr = servernames.begin();
	for(; itr != servernames.end(); ++itr)
		if(**itr == servername)
			return (*itr)->c_str();

	servernames.push_back(new string(servername));
	itr = --servernames.end();
	return (*itr)->c_str();
}

bool InspIRCd::FindServerName(const std::string &servername)
{
	servernamelist::iterator itr = servernames.begin();
	for(; itr != servernames.end(); ++itr)
		if(**itr == servername)
			return true;
	return false;
}

void InspIRCd::Exit(int status)
{
#ifdef WINDOWS
	CloseIPC();
#endif
	if (SI)
	{
		SI->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
		SI->Cleanup();
	}
	exit (status);
}

void InspIRCd::Cleanup()
{
	std::vector<std::string> mymodnames;
	int MyModCount = this->GetModuleCount();

	for (unsigned int i = 0; i < Config->ports.size(); i++)
	{
		/* This calls the constructor and closes the listening socket */
		delete Config->ports[i];
	}

	Config->ports.clear();

	/* Close all client sockets, or the new process inherits them */
	for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
	{
		(*i)->SetWriteError("Server shutdown");
		(*i)->CloseSocket();
	}

	/* We do this more than once, so that any service providers get a
	 * chance to be unhooked by the modules using them, but then get
	 * a chance to be removed themsleves.
	 */
	for (int tries = 0; tries < 3; tries++)
	{
		MyModCount = this->GetModuleCount();
		mymodnames.clear();

		/* Unload all modules, so they get a chance to clean up their listeners */
		for (int j = 0; j <= MyModCount; j++)
			mymodnames.push_back(Config->module_names[j]);

		for (int k = 0; k <= MyModCount; k++)
			this->UnloadModule(mymodnames[k].c_str());
	}

	/* Close logging */
	this->Logger->Close();

	/* Cleanup Server Names */
	for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
		delete (*itr);

#ifdef WINDOWS
	/* WSACleanup */
	WSACleanup();
#endif
}

void InspIRCd::Restart(const std::string &reason)
{
	/* SendError flushes each client's queue,
	 * regardless of writeability state
	 */
	this->SendError(reason);

	this->Cleanup();

	/* Figure out our filename (if theyve renamed it, we're boned) */
	std::string me;

#ifdef WINDOWS
	char module[MAX_PATH];
	if (GetModuleFileName(NULL, module, MAX_PATH))
		me = module;
#else
	me = Config->MyDir + "/inspircd";
#endif

	if (execv(me.c_str(), Config->argv) == -1)
	{
		/* Will raise a SIGABRT if not trapped */
		throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
	}
}

void InspIRCd::Start()
{
	printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
	printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
	printf_c("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey, Burlex\033[0m\n");
	printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
}

void InspIRCd::Rehash(int status)
{
	SI->WriteOpers("*** Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(SI->ConfigFileName));
	SI->CloseLog();
	SI->OpenLog(SI->Config->argv, SI->Config->argc);
	SI->RehashUsersAndChans();
	FOREACH_MOD_I(SI, I_OnGarbageCollect, OnGarbageCollect());
	SI->Config->Read(false,NULL);
	SI->ResetMaxBans();
	SI->Res->Rehash();
	FOREACH_MOD_I(SI,I_OnRehash,OnRehash(NULL,""));
	SI->BuildISupport();
}

void InspIRCd::ResetMaxBans()
{
	for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
		i->second->ResetMaxBans();
}


/** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 * we must occasionally rehash the hash (yes really).
 * We do this by copying the entries from the old hash to a new hash, causing all
 * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 * very expensive, so instead we do it when the user types /REHASH and expects a
 * short delay anyway.
 */
void InspIRCd::RehashUsersAndChans()
{
	user_hash* old_users = this->clientlist;
	chan_hash* old_chans = this->chanlist;

	this->clientlist = new user_hash();
	this->chanlist = new chan_hash();

	for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
		this->clientlist->insert(*n);

	delete old_users;

	for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
		this->chanlist->insert(*n);

	delete old_chans;
}

void InspIRCd::CloseLog()
{
	this->Logger->Close();
}

void InspIRCd::SetSignals()
{
#ifndef WIN32
	signal(SIGALRM, SIG_IGN);
	signal(SIGHUP, InspIRCd::Rehash);
	signal(SIGPIPE, SIG_IGN);
	signal(SIGCHLD, SIG_IGN);
#endif
	signal(SIGTERM, InspIRCd::Exit);
}

void InspIRCd::QuickExit(int status)
{
	exit(0);
}

bool InspIRCd::DaemonSeed()
{
#ifdef WINDOWS
	printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
	return true;
#else
	signal(SIGTERM, InspIRCd::QuickExit);

	int childpid;
	if ((childpid = fork ()) < 0)
		return false;
	else if (childpid > 0)
	{
		/* We wait here for the child process to kill us,
		 * so that the shell prompt doesnt come back over
		 * the output.
		 * Sending a kill with a signal of 0 just checks
		 * if the child pid is still around. If theyre not,
		 * they threw an error and we should give up.
		 */
		while (kill(childpid, 0) != -1)
			sleep(1);
		exit(0);
	}
	setsid ();
	umask (007);
	printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());

	signal(SIGTERM, InspIRCd::Exit);

	rlimit rl;
	if (getrlimit(RLIMIT_CORE, &rl) == -1)
	{
		this->Log(DEFAULT,"Failed to getrlimit()!");
		return false;
	}
	else
	{
		rl.rlim_cur = rl.rlim_max;
		if (setrlimit(RLIMIT_CORE, &rl) == -1)
			this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
	}

	return true;
#endif
}

void InspIRCd::WritePID(const std::string &filename)
{
	std::string fname = (filename.empty() ? "inspircd.pid" : filename);
	if (*(fname.begin()) != '/')
	{
		std::string::size_type pos;
		std::string confpath = this->ConfigFileName;
		if ((pos = confpath.rfind("/")) != std::string::npos)
		{
			/* Leaves us with just the path */
			fname = confpath.substr(0, pos) + std::string("/") + fname;
		}
	}
	std::ofstream outfile(fname.c_str());
	if (outfile.is_open())
	{
		outfile << getpid();
		outfile.close();
	}
	else
	{
		printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
		this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
		Exit(EXIT_STATUS_PID);
	}
}

std::string InspIRCd::GetRevision()
{
	return REVISION;
}

InspIRCd::InspIRCd(int argc, char** argv)
	: ModCount(-1), GlobalCulls(this)
{
	int found_ports = 0;
	FailedPortList pl;
	int do_version = 0, do_nofork = 0, do_debug = 0, do_nolog = 0, do_root = 0;    /* flag variables */
	char c = 0;

	modules.resize(255);
	factory.resize(255);
	memset(&server, 0, sizeof(server));
	memset(&client, 0, sizeof(client));

	this->unregistered_count = 0;

	this->clientlist = new user_hash();
	this->chanlist = new chan_hash();

	this->Config = new ServerConfig(this);

	this->Config->argv = argv;
	this->Config->argc = argc;

	chdir(Config->GetFullProgDir().c_str());

	this->Config->opertypes.clear();
	this->Config->operclass.clear();
	this->SNO = new SnomaskManager(this);
	this->TIME = this->OLDTIME = this->startup_time = time(NULL);
	this->time_delta = 0;
	this->next_call = this->TIME + 3;
	srand(this->TIME);

	*this->LogFileName = 0;
	strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);

	struct option longopts[] =
	{
		{ "nofork",	no_argument,		&do_nofork,	1	},
		{ "logfile",	required_argument,	NULL,		'f'	},
		{ "config",	required_argument,	NULL,		'c'	},
		{ "debug",	no_argument,		&do_debug,	1	},
		{ "nolog",	no_argument,		&do_nolog,	1	},
		{ "runasroot",	no_argument,		&do_root,	1	},
		{ "version",	no_argument,		&do_version,	1	},
		{ 0, 0, 0, 0 }
	};

	while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1)
	{
		switch (c)
		{
			case 'f':
				/* Log filename was set */
				strlcpy(LogFileName, optarg, MAXBUF);
			break;
			case 'c':
				/* Config filename was set */
				strlcpy(ConfigFileName, optarg, MAXBUF);
			break;
			case 0:
				/* getopt_long_only() set an int variable, just keep going */
			break;
			default:
				/* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
				printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>] [--runasroot] [--version] [--config <config>]\n", argv[0]);
				Exit(EXIT_STATUS_ARGV);
			break;
		}
	}

	if (do_version)
	{
		printf("\n%s r%s\n", VERSION, REVISION);
		Exit(EXIT_STATUS_NOERROR);
	}

#ifdef WIN32

	// Handle forking
	if(!do_nofork && !owner_processid)
	{
		DWORD ExitCode = WindowsForkStart(this);
		if(ExitCode)
			Exit(ExitCode);
	}

	// Set up winsock
	WSADATA wsadata;
	WSAStartup(MAKEWORD(2,0), &wsadata);

#endif
	if (!ServerConfig::FileExists(this->ConfigFileName))
	{
		printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
		this->Log(DEFAULT,"Unable to open config file %s", this->ConfigFileName);
		Exit(EXIT_STATUS_CONFIG);
	}

	this->Start();

	/* Set the finished argument values */
	Config->nofork = do_nofork;
	Config->forcedebug = do_debug;
	Config->writelog = !do_nolog;

	strlcpy(Config->MyExecutable,argv[0],MAXBUF);

	this->OpenLog(argv, argc);

	this->stats = new serverstats();
	this->Timers = new TimerManager(this);
	this->Parser = new CommandParser(this);
	this->XLines = new XLineManager(this);
	Config->ClearStack();
	Config->Read(true, NULL);

	if (!do_root)
		this->CheckRoot();
	else
	{
		printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
		printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
		printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
		printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
		printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
		printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
		printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
		printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
		sleep(20);
	}

	this->SetSignals();

	if (!Config->nofork)
	{
		if (!this->DaemonSeed())
		{
			printf("ERROR: could not go into daemon mode. Shutting down.\n");
			Log(DEFAULT,"ERROR: could not go into daemon mode. Shutting down.");
			Exit(EXIT_STATUS_FORK);
		}
	}


	/* Because of limitations in kqueue on freebsd, we must fork BEFORE we
	 * initialize the socket engine.
	 */
	SocketEngineFactory* SEF = new SocketEngineFactory();
	SE = SEF->Create(this);
	delete SEF;

	this->Modes = new ModeParser(this);
	this->AddServerName(Config->ServerName);
	CheckDie();
	int bounditems = BindPorts(true, found_ports, pl);

	for(int t = 0; t < 255; t++)
		Config->global_implementation[t] = 0;

	memset(&Config->implement_lists,0,sizeof(Config->implement_lists));

	printf("\n");

	this->Res = new DNS(this);

	this->LoadAllModules();
	/* Just in case no modules were loaded - fix for bug #101 */
	this->BuildISupport();
	InitializeDisabledCommands(Config->DisabledCommands, this);

	if ((Config->ports.size() == 0) && (found_ports > 0))
	{
		printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
		Log(DEFAULT,"ERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?");
		Exit(EXIT_STATUS_BIND);
	}

	if (Config->ports.size() != (unsigned int)found_ports)
	{
		printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n", bounditems, found_ports);
		printf("The following port(s) failed to bind:\n");
		int j = 1;
		for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
		{
			printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
		}
	}
#ifndef WINDOWS
	if (!Config->nofork)
	{
		if (kill(getppid(), SIGTERM) == -1)
		{
			printf("Error killing parent process: %s\n",strerror(errno));
			Log(DEFAULT,"Error killing parent process: %s",strerror(errno));
		}
	}

	if (isatty(0) && isatty(1) && isatty(2))
	{
		/* We didn't start from a TTY, we must have started from a background process -
		 * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
		 * close stdin/stdout
		 */
		if (!do_nofork)
		{
			fclose(stdin);
			fclose(stderr);
			fclose(stdout);
		}
		else
		{
			Log(DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
		}
	}
#else
	InitIPC();
	if(!Config->nofork)
	{
		WindowsForkKillOwner(this);
		FreeConsole();
	}
#endif
	printf("\nInspIRCd is now running!\n");
	Log(DEFAULT,"Startup complete.");

	this->WritePID(Config->PID);
}

std::string InspIRCd::GetVersionString()
{
	char versiondata[MAXBUF];
	char dnsengine[] = "singlethread-object";

	if (*Config->CustomVersion)
	{
		snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
	}
	else
	{
		snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%s,%s,%s]",VERSION,Config->ServerName,SYSTEM,REVISION,SE->GetName().c_str(),dnsengine);
	}
	return versiondata;
}

char* InspIRCd::ModuleError()
{
	return MODERR;
}

void InspIRCd::EraseFactory(int j)
{
	int v = 0;
	for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
	{
		if (v == j)
		{
			delete *t;
			factory.erase(t);
		 	factory.push_back(NULL);
		 	return;
	   	}
		v++;
	}
}

void InspIRCd::EraseModule(int j)
{
	int v1 = 0;
	for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
	{
		if (v1 == j)
		{
			DELETE(*m);
			modules.erase(m);
			modules.push_back(NULL);
			break;
		}
		v1++;
	}
	int v2 = 0;
	for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
	{
		if (v2 == j)
		{
			Config->module_names.erase(v);
			break;
		}
		v2++;
	}

}

void InspIRCd::MoveTo(std::string modulename,int slot)
{
	unsigned int v2 = 256;
	for (unsigned int v = 0; v < Config->module_names.size(); v++)
	{
		if (Config->module_names[v] == modulename)
		{
			// found an instance, swap it with the item at the end
			v2 = v;
			break;
		}
	}
	if ((v2 != (unsigned int)slot) && (v2 < 256))
	{
		// Swap the module names over
		Config->module_names[v2] = Config->module_names[slot];
		Config->module_names[slot] = modulename;
		// now swap the module factories
		ircd_module* temp = factory[v2];
		factory[v2] = factory[slot];
		factory[slot] = temp;
		// now swap the module objects
		Module* temp_module = modules[v2];
		modules[v2] = modules[slot];
		modules[slot] = temp_module;
		// now swap the implement lists (we dont
		// need to swap the global or recount it)
		for (int n = 0; n < 255; n++)
		{
			char x = Config->implement_lists[v2][n];
			Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
			Config->implement_lists[slot][n] = x;
		}
	}
}

void InspIRCd::MoveAfter(std::string modulename, std::string after)
{
	for (unsigned int v = 0; v < Config->module_names.size(); v++)
	{
		if (Config->module_names[v] == after)
		{
			MoveTo(modulename, v);
			return;
		}
	}
}

void InspIRCd::MoveBefore(std::string modulename, std::string before)
{
	for (unsigned int v = 0; v < Config->module_names.size(); v++)
	{
		if (Config->module_names[v] == before)
		{
			if (v > 0)
			{
				MoveTo(modulename, v-1);
			}
			else
			{
				MoveTo(modulename, v);
			}
			return;
		}
	}
}

void InspIRCd::MoveToFirst(std::string modulename)
{
	MoveTo(modulename,0);
}

void InspIRCd::MoveToLast(std::string modulename)
{
	MoveTo(modulename,this->GetModuleCount());
}

void InspIRCd::BuildISupport()
{
	// the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
	std::stringstream v;
	v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES-1 << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
	v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
	v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
	Config->data005 = v.str();
	FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
	Config->Update005();
}

bool InspIRCd::UnloadModule(const char* filename)
{
	std::string filename_str = filename;
	for (unsigned int j = 0; j != Config->module_names.size(); j++)
	{
		if (Config->module_names[j] == filename_str)
		{
			if (modules[j]->GetVersion().Flags & VF_STATIC)
			{
				this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
				snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
				return false;
			}
			std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
			if (intercount.first > 0)
			{
				this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
				snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
						intercount.first,
						intercount.first > 1 ? "s" : "",
						intercount.first > 1 ? "are" : "is",
						intercount.second.c_str());
				return false;
			}
			/* Give the module a chance to tidy out all its metadata */
			for (chan_hash::iterator c = this->chanlist->begin(); c != this->chanlist->end(); c++)
			{
				modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
			}
			for (user_hash::iterator u = this->clientlist->begin(); u != this->clientlist->end(); u++)
			{
				modules[j]->OnCleanup(TYPE_USER,u->second);
			}

			/* Tidy up any dangling resolvers */
			this->Res->CleanResolvers(modules[j]);

			FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));

			for(int t = 0; t < 255; t++)
			{
				Config->global_implementation[t] -= Config->implement_lists[j][t];
			}

			/* We have to renumber implement_lists after unload because the module numbers change!
			 */
			for(int j2 = j; j2 < 254; j2++)
			{
				for(int t = 0; t < 255; t++)
				{
					Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
				}
			}

			// found the module
			Parser->RemoveCommands(filename);
			this->EraseModule(j);
			this->EraseFactory(j);
			this->Log(DEFAULT,"Module %s unloaded",filename);
			this->ModCount--;
			BuildISupport();
			return true;
		}
	}
	this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
	snprintf(MODERR,MAXBUF,"Module not loaded");
	return false;
}

bool InspIRCd::LoadModule(const char* filename)
{
	/* Do we have a glob pattern in the filename?
	 * The user wants to load multiple modules which
	 * match the pattern.
	 */
	if (strchr(filename,'*') || (strchr(filename,'?')))
	{
		int n_match = 0;
		DIR* library = opendir(Config->ModPath);
		if (library)
		{
			/* Try and locate and load all modules matching the pattern */
			dirent* entry = NULL;
			while ((entry = readdir(library)))
			{
				if (this->MatchText(entry->d_name, filename))
				{
					if (!this->LoadModule(entry->d_name))
						n_match++;
				}
			}
			closedir(library);
		}
		/* Loadmodule will now return false if any one of the modules failed
		 * to load (but wont abort when it encounters a bad one) and when 1 or
		 * more modules were actually loaded.
		 */
		return (n_match > 0);
	}

	char modfile[MAXBUF];
	snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
	std::string filename_str = filename;

	if (!ServerConfig::DirValid(modfile))
	{
		this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
		snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
		return false;
	}
	if (ServerConfig::FileExists(modfile))
	{

		for (unsigned int j = 0; j < Config->module_names.size(); j++)
		{
			if (Config->module_names[j] == filename_str)
			{
				this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
				snprintf(MODERR,MAXBUF,"Module already loaded");
				return false;
			}
		}
		Module* m = NULL;
		ircd_module* a = NULL;
		try
		{
			a = new ircd_module(this, modfile);
			factory[this->ModCount+1] = a;
			if (factory[this->ModCount+1]->LastError())
			{
				this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
				snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
				delete a;
				return false;
			}
			if ((long)factory[this->ModCount+1]->factory != -1)
			{
				m = factory[this->ModCount+1]->factory->CreateModule(this);

				Version v = m->GetVersion();

				if (v.API != API_VERSION)
				{
					delete m;
					delete a;
					this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
					snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
					return false;
				}
				else
				{
					this->Log(DEFAULT,"New module introduced: %s (API version %d, Module version %d.%d.%d.%d)%s", filename, v.API, v.Major, v.Minor, v.Revision, v.Build, (!(v.Flags & VF_VENDOR) ? " [3rd Party]" : " [Vendor]"));
				}

				modules[this->ModCount+1] = m;
				/* save the module and the module's classfactory, if
				 * this isnt done, random crashes can occur :/ */
				Config->module_names.push_back(filename);

				char* x = &Config->implement_lists[this->ModCount+1][0];
				for(int t = 0; t < 255; t++)
					x[t] = 0;

				modules[this->ModCount+1]->Implements(x);

				for(int t = 0; t < 255; t++)
					Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
			}
			else
			{
				this->Log(DEFAULT,"Unable to load %s",modfile);
				snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
				if (a)
					delete a;
				return false;
			}
		}
		catch (CoreException& modexcept)
		{
			this->Log(DEFAULT,"Unable to load %s: %s",modfile,modexcept.GetReason());
			snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
			if (m)
				delete m;
			if (a)
				delete a;
			return false;
		}
	}
	else
	{
		this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
		snprintf(MODERR,MAXBUF,"Module file could not be found");
		return false;
	}
	this->ModCount++;
	FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
	// now work out which modules, if any, want to move to the back of the queue,
	// and if they do, move them there.
	std::vector<std::string> put_to_back;
	std::vector<std::string> put_to_front;
	std::map<std::string,std::string> put_before;
	std::map<std::string,std::string> put_after;
	for (unsigned int j = 0; j < Config->module_names.size(); j++)
	{
		if (modules[j]->Prioritize() == PRIORITY_LAST)
			put_to_back.push_back(Config->module_names[j]);
		else if (modules[j]->Prioritize() == PRIORITY_FIRST)
			put_to_front.push_back(Config->module_names[j]);
		else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
			put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
		else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
			put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
	}
	for (unsigned int j = 0; j < put_to_back.size(); j++)
		MoveToLast(put_to_back[j]);
	for (unsigned int j = 0; j < put_to_front.size(); j++)
		MoveToFirst(put_to_front[j]);
	for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
		MoveBefore(j->first,j->second);
	for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
		MoveAfter(j->first,j->second);
	BuildISupport();
	return true;
}

void InspIRCd::DoOneIteration(bool process_module_sockets)
{
#ifndef WIN32
	static rusage ru;
#else
	static time_t uptime;
	static struct tm * stime;
	static char window_title[100];
#endif

	/* time() seems to be a pretty expensive syscall, so avoid calling it too much.
	 * Once per loop iteration is pleanty.
	 */
	OLDTIME = TIME;
	TIME = time(NULL);

	/* Run background module timers every few seconds
	 * (the docs say modules shouldnt rely on accurate
	 * timing using this event, so we dont have to
	 * time this exactly).
	 */
	if (TIME != OLDTIME)
	{
		if (TIME < OLDTIME)
			WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
		if ((TIME % 3600) == 0)
		{
			this->RehashUsersAndChans();
			FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
		}
		Timers->TickTimers(TIME);
		this->DoBackgroundUserStuff(TIME);

		if ((TIME % 5) == 0)
		{
			XLines->expire_lines();
			FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
			Timers->TickMissedTimers(TIME);
		}
#ifndef WIN32
		/* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
		if (!getrusage(RUSAGE_SELF, &ru))
		{
			gettimeofday(&this->stats->LastSampled, NULL);
			this->stats->LastCPU = ru.ru_utime;
		}
#else
		CheckIPC(this);

		if(Config->nofork)
		{
			uptime = Time() - startup_time;
			stime = gmtime(&uptime);
			snprintf(window_title, 100, "InspIRCd - %u clients, %u accepted connections - Up %u days, %.2u:%.2u:%.2u",
				LocalUserCount(), stats->statsAccept, stime->tm_yday, stime->tm_hour, stime->tm_min, stime->tm_sec);
			SetConsoleTitle(window_title);
		}
#endif
	}

	/* Call the socket engine to wait on the active
	 * file descriptors. The socket engine has everything's
	 * descriptors in its list... dns, modules, users,
	 * servers... so its nice and easy, just one call.
	 * This will cause any read or write events to be
	 * dispatched to their handlers.
	 */
	SE->DispatchEvents();

	/* if any users was quit, take them out */
	GlobalCulls.Apply();

	/* If any inspsockets closed, remove them */
	for (std::map<InspSocket*,InspSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
	{
		SE->DelFd(x->second);
		x->second->Close();
		delete x->second;
	}
	SocketCull.clear();
}

int InspIRCd::Run()
{
	while (true)
	{
		DoOneIteration(true);
	}
	/* This is never reached -- we hope! */
	return 0;
}

/**********************************************************************************/

/**
 * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 */

int main(int argc, char** argv)
{
	SI = new InspIRCd(argc, argv);
	SI->Run();
	delete SI;
	return 0;
}

/* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 * registration timeout maximum seconds)
 */
bool InspIRCd::AllModulesReportReady(userrec* user)
{
	if (!Config->global_implementation[I_OnCheckReady])
		return true;

	for (int i = 0; i <= this->GetModuleCount(); i++)
	{
		if (Config->implement_lists[i][I_OnCheckReady])
		{
			int res = modules[i]->OnCheckReady(user);
			if (!res)
				return false;
		}
	}
	return true;
}

int InspIRCd::GetModuleCount()
{
	return this->ModCount;
}

time_t InspIRCd::Time(bool delta)
{
	if (delta)
		return TIME + time_delta;
	return TIME;
}

int InspIRCd::SetTimeDelta(int delta)
{
	int old = time_delta;
	time_delta = delta;
	this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
	return old;
}

void InspIRCd::AddLocalClone(userrec* user)
{
	clonemap::iterator x = local_clones.find(user->GetIPString());
	if (x != local_clones.end())
		x->second++;
	else
		local_clones[user->GetIPString()] = 1;
}

void InspIRCd::AddGlobalClone(userrec* user)
{
	clonemap::iterator y = global_clones.find(user->GetIPString());
	if (y != global_clones.end())
		y->second++;
	else
		global_clones[user->GetIPString()] = 1;
}

int InspIRCd::GetTimeDelta()
{
	return time_delta;
}

bool FileLogger::Readable()
{
	return false;
}

void FileLogger::HandleEvent(EventType et, int errornum)
{
	this->WriteLogLine("");
	if (log)
		ServerInstance->SE->DelFd(this);
}

void FileLogger::WriteLogLine(const std::string &line)
{
	if (line.length())
		buffer.append(line);

	if (log)
	{
		int written = fprintf(log,"%s",buffer.c_str());
#ifdef WINDOWS
		buffer.clear();
#else
		if ((written >= 0) && (written < (int)buffer.length()))
		{
			buffer.erase(0, buffer.length());
			ServerInstance->SE->AddFd(this);
		}
		else if (written == -1)
		{
			if (errno == EAGAIN)
				ServerInstance->SE->AddFd(this);
		}
		else
		{
			/* Wrote the whole buffer, and no need for write callback */
			buffer.clear();
		}
#endif
		if (writeops++ % 20)
		{
			fflush(log);
		}
	}
}

void FileLogger::Close()
{
	if (log)
	{
		/* Burlex: Windows assumes nonblocking on FILE* pointers anyway, and also "file" fd's aren't the same
		 * as socket fd's. */
#ifndef WIN32
		int flags = fcntl(fileno(log), F_GETFL, 0);
		fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
#endif
		if (buffer.size())
			fprintf(log,"%s",buffer.c_str());

#ifndef WINDOWS
		ServerInstance->SE->DelFd(this);
#endif

		fflush(log);
		fclose(log);
	}

	buffer.clear();
}

FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
{
	if (log)
	{
		irc::sockets::NonBlocking(fileno(log));
		this->SetFd(fileno(log));
		buffer.clear();
	}
}

FileLogger::~FileLogger()
{
	this->Close();
}