summaryrefslogtreecommitdiff
path: root/src/inspircd.cpp
blob: 58c83390283a54d0e4c147141bfdd1b012e8e451 (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
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
 *                       E-mail:
 *                <brain@chatspike.net>
 *           	  <Craig@chatspike.net>
 *     
 * Written by Craig Edwards, Craig McLure, and others.
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

/* Now with added unF! ;) */

using namespace std;

#include "inspircd_config.h"
#include "inspircd.h"
#include "inspircd_io.h"
#include <fcntl.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <time.h>
#include <string>
#ifdef GCC3
#include <ext/hash_map>
#else
#include <hash_map>
#endif
#include <map>
#include <sstream>
#include <vector>
#include <deque>
#ifdef THREADED_DNS
#include <pthread.h>
#endif
#include "users.h"
#include "ctables.h"
#include "globals.h"
#include "modules.h"
#include "dynamic.h"
#include "wildcard.h"
#include "message.h"
#include "mode.h"
#include "commands.h"
#include "xline.h"
#include "inspstring.h"
#include "dnsqueue.h"
#include "helperfuncs.h"
#include "hashcomp.h"
#include "socketengine.h"
#include "userprocess.h"
#include "socket.h"
#include "typedefs.h"
#include "command_parse.h"

InspIRCd* ServerInstance;

int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list

extern std::vector<Module*> modules;
extern std::vector<ircd_module*> factory;

std::vector<InspSocket*> module_sockets;
std::vector<userrec*> local_users;

extern int MODCOUNT;
extern char LOG_FILE[MAXBUF];
int openSockfd[MAXSOCKS];
int yield_depth;
sockaddr_in client,server;
socklen_t length;

extern InspSocket* socket_ref[MAX_DESCRIPTORS];

time_t TIME = time(NULL), OLDTIME = time(NULL);

// This table references users by file descriptor.
// its an array to make it VERY fast, as all lookups are referenced
// by an integer, meaning there is no need for a scan/search operation.
userrec* fd_ref_table[MAX_DESCRIPTORS];

Server* MyServer = new Server;
ServerConfig *Config = new ServerConfig;

user_hash clientlist;
chan_hash chanlist;

servernamelist servernames;
char lowermap[255];

void AddServerName(std::string servername)
{
	log(DEBUG,"Adding server name: %s",servername.c_str());
	for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
	{
		if (*a == servername)
			return;
	}
	servernames.push_back(servername);
}

const char* FindServerNamePtr(std::string servername)
{
	for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
	{
		if (*a == servername)
			return a->c_str();
	}
	AddServerName(servername);
	return FindServerNamePtr(servername);
}

bool FindServerName(std::string servername)
{
	for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
	{
		if (*a == servername)
			return true;
	}
	return false;
}

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

void InspIRCd::MakeLowerMap()
{
	// initialize the lowercase mapping table
	for (unsigned int cn = 0; cn < 256; cn++)
		lowermap[cn] = cn;
	// lowercase the uppercase chars
	for (unsigned int cn = 65; cn < 91; cn++)
		lowermap[cn] = tolower(cn);
	// now replace the specific chars for scandanavian comparison
	lowermap[(unsigned)'['] = '{';
	lowermap[(unsigned)']'] = '}';
	lowermap[(unsigned)'\\'] = '|';
}

InspIRCd::InspIRCd(int argc, char** argv)
{
	Start();
	module_sockets.clear();
	this->startup_time = time(NULL);
	srand(time(NULL));
	log(DEBUG,"*** InspIRCd starting up!");
	if (!FileExists(CONFIG_FILE))
	{
		printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
		log(DEFAULT,"main: no config");
		printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
		Exit(ERROR);
	}
	*LOG_FILE = 0;
	if (argc > 1) {
		for (int i = 1; i < argc; i++)
		{
			if (!strcmp(argv[i],"-nofork")) {
				Config->nofork = true;
			}
			if (!strcmp(argv[i],"-wait")) {
				sleep(6);
			}
			if (!strcmp(argv[i],"-nolimit")) {
				Config->unlimitcore = true;
			}
			if (!strcmp(argv[i],"-logfile")) {
				if (argc > i+1)
				{
					strlcpy(LOG_FILE,argv[i+1],MAXBUF);
					printf("LOG: Setting logfile to %s\n",LOG_FILE);
				}
				else
				{
					printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
					Exit(ERROR);
				}
			}
		}
	}

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

	this->MakeLowerMap();

        OpenLog(argv, argc);
        Config->ClearStack();
        Config->Read(true,NULL);
        CheckRoot();
	this->ModeGrok = new ModeParser();
	this->Parser = new CommandParser();
	this->stats = new serverstats();
        AddServerName(Config->ServerName);
        CheckDie();
        stats->BoundPortCount = BindPorts();

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

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

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

        /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
         * initialize the socket engine.
         */
        SE = new SocketEngine();

        /* We must load the modules AFTER initializing the socket engine, now */

	return;
}

std::string InspIRCd::GetVersionString()
{
	char versiondata[MAXBUF];
#ifdef THREADED_DNS
	char dnsengine[] = "multithread";
#else
	char dnsengine[] = "singlethread";
#endif
	if (*Config->CustomVersion)
	{
		snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
	}
	else
	{
		snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
	}
	return versiondata;
}

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

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

void InspIRCd::erase_module(int j)
{
	int v1 = 0;
	for (std::vector<Module*>::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;
	log(DEBUG,"Moving %s to slot %d",modulename.c_str(),slot);
	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 MODCOUNT
			v2 = v;
			break;
		}
	}
	if (v2 == (unsigned int)slot)
	{
		log(DEBUG,"Item %s already in slot %d!",modulename.c_str(),slot);
	}
	else if (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;
		}
		log(DEBUG,"Moved %s to slot successfully",modulename.c_str());
	}
	else
	{
		log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
	}
}

void InspIRCd::MoveAfter(std::string modulename, std::string after)
{
	log(DEBUG,"Move %s after %s...",modulename.c_str(),after.c_str());
	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)
{
	log(DEBUG,"Move %s before %s...",modulename.c_str(),before.c_str());
	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,MODCOUNT);
}

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 << " CHANTYPES=# PREFIX=(ohv)@%+ MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
	v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
	v << MAXAWAY << " CHANMODES=b,k,l,psmnti FNC NETWORK=" << Config->Network << " MAXPARA=32";
	Config->data005 = v.str();
	FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
}

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)
			{
				log(DEFAULT,"Failed to unload STATIC module %s",filename);
				snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
				return false;
			}
			/* Give the module a chance to tidy out all its metadata */
			for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
			{
				modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
			}
			for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
			{
				modules[j]->OnCleanup(TYPE_USER,u->second);
			}

			FOREACH_MOD(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
			log(DEBUG,"Deleting module...");
			erase_module(j);
			log(DEBUG,"Erasing module entry...");
			erase_factory(j);
                        log(DEBUG,"Removing dependent commands...");
                        Parser->RemoveCommands(filename);
			log(DEFAULT,"Module %s unloaded",filename);
			MODCOUNT--;
			BuildISupport();
			return true;
		}
	}
	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)
{
	char modfile[MAXBUF];
#ifdef STATIC_LINK
	strlcpy(modfile,filename,MAXBUF);
#else
	snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
#endif
	std::string filename_str = filename;
#ifndef STATIC_LINK
#ifndef IS_CYGWIN
	if (!DirValid(modfile))
	{
		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;
	}
#endif
#endif
	log(DEBUG,"Loading module: %s",modfile);
#ifndef STATIC_LINK
        if (FileExists(modfile))
        {
#endif
		for (unsigned int j = 0; j < Config->module_names.size(); j++)
		{
			if (Config->module_names[j] == filename_str)
			{
				log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
				snprintf(MODERR,MAXBUF,"Module already loaded");
				return false;
			}
		}
		ircd_module* a = new ircd_module(modfile);
                factory[MODCOUNT+1] = a;
                if (factory[MODCOUNT+1]->LastError())
                {
                        log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
			snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
			return false;
                }
		try
		{
	                if (factory[MODCOUNT+1]->factory)
	                {
				Module* m = factory[MODCOUNT+1]->factory->CreateModule(MyServer);
	                        modules[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[MODCOUNT+1][0];
				for(int t = 0; t < 255; t++)
					x[t] = 0;

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

				for(int t = 0; t < 255; t++)
				{
					Config->global_implementation[t] += Config->implement_lists[MODCOUNT+1][t];
					if (Config->implement_lists[MODCOUNT+1][t])
					{
						log(DEBUG,"Add global implementation: %d %d => %d",MODCOUNT+1,t,Config->global_implementation[t]);
					}
				}
	                }
			else
			{
       	        		log(DEFAULT,"Unable to load %s",modfile);
				snprintf(MODERR,MAXBUF,"Factory function failed!");
				return false;
	                }
		}
		catch (ModuleException& modexcept)
		{
			log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
			snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
			return false;
		}
#ifndef STATIC_LINK
        }
        else
        {
                log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
		snprintf(MODERR,MAXBUF,"Module file could not be found");
		return false;
        }
#endif
	MODCOUNT++;
	FOREACH_MOD(I_OnLoadModule,OnLoadModule(modules[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)
		{
			log(DEBUG,"Module %d wants PRIORITY_BEFORE",j);
			put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
			log(DEBUG,"Before: %s",Config->module_names[modules[j]->Prioritize() >> 8].c_str());
		}
		else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
		{
			log(DEBUG,"Module %d wants PRIORITY_AFTER",j);
			put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
			log(DEBUG,"After: %s",Config->module_names[modules[j]->Prioritize() >> 8].c_str());
		}
	}
	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)
{
        int activefds[MAX_DESCRIPTORS];
        int incomingSockfd;
        int in_port;
        userrec* cu = NULL;
        InspSocket* s = NULL;
        InspSocket* s_del = NULL;
        unsigned int numberactive;
        sockaddr_in sock_us;     // our port number
        socklen_t uslen;         // length of our port number

	if (yield_depth > 3)
		return;

	yield_depth++;

        /* 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 % 5) == 0) && (!expire_run))
        {
                expire_lines();
		if (process_module_sockets)
		{
			/* Fix by brain - the addition of DoOneIteration means that this
			 * can end up getting called recursively in the following pattern:
			 *
			 * m_spanningtree DoPingChecks
			 * (server pings out and is squit)
			 * (squit causes call to DoOneIteration)
			 * DoOneIteration enters here
			 * calls DoBackground timer
			 * enters m_spanningtree DoPingChecks... see step 1.
			 *
			 * This should do the job and fix the bug.
			 */
	                FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
		}
                TickMissedTimers(TIME);
                expire_run = true;
		yield_depth--;
                return;
        }   
        else if ((TIME % 5) == 1)
        {
                expire_run = false;
        }
 
        /* Once a second, do the background processing */
        if (TIME != OLDTIME)
        {
                if (TIME < OLDTIME)
                        WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
                DoBackgroundUserStuff(TIME);
        }

        /* Process timeouts on module sockets each time around
         * the loop. There shouldnt be many module sockets, at
         * most, 20 or so, so this won't be much of a performance
         * hit at all.   
         */ 
	if (process_module_sockets)
	        DoSocketTimeouts(TIME);  
         
        TickTimers(TIME);
         
        /* 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.
         */
        if (!(numberactive = SE->Wait(activefds)))
	{
		yield_depth--;
                return;
	}

        /**
         * Now process each of the fd's. For users, we have a fast
         * lookup table which can find a user by file descriptor, so
         * processing them by fd isnt expensive. If we have a lot of
         * listening ports or module sockets though, things could get
         * ugly.
         */
        for (unsigned int activefd = 0; activefd < numberactive; activefd++)
        {
                int socket_type = SE->GetType(activefds[activefd]);
                switch (socket_type)
                {
                        case X_ESTAB_CLIENT:

                                cu = fd_ref_table[activefds[activefd]];
                                if (cu)
                                        ProcessUser(cu);  
        
                        break;
        
                        case X_ESTAB_MODULE:

				if (!process_module_sockets)
					break;

                                /* Process module-owned sockets.
                                 * Modules are encouraged to inherit their sockets from
                                 * InspSocket so we can process them neatly like this.
                                 */
                                s = socket_ref[activefds[activefd]]; 
              
                                if ((s) && (!s->Poll()))
                                {
                                        log(DEBUG,"Socket poll returned false, close and bail");
                                        SE->DelFd(s->GetFd());
                                        for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
                                        {
                                                s_del = (InspSocket*)*a;
                                                if ((s_del) && (s_del->GetFd() == activefds[activefd]))
                                                {
                                                        module_sockets.erase(a);
                                                        break;
                                                }
                                        }
                                        s->Close();
                                        delete s;
                                }
                        break;

                        case X_ESTAB_DNS:
                                /* When we are using single-threaded dns,
                                 * the sockets for dns end up in our mainloop.
                                 * When we are using multi-threaded dns,
                                 * each thread has its own basic poll() loop
                                 * within it, making them 'fire and forget'
                                 * and independent of the mainloop.
                                 */
#ifndef THREADED_DNS
                                dns_poll(activefds[activefd]);
#endif
                        break;

			case X_LISTEN:

                                /* It's a listener */
                                uslen = sizeof(sock_us);
                                length = sizeof(client);
                                incomingSockfd = accept (activefds[activefd],(struct sockaddr*)&client,&length);
        
                                if ((incomingSockfd > -1) && (!getsockname(incomingSockfd,(sockaddr*)&sock_us,&uslen)))
                                {
                                        in_port = ntohs(sock_us.sin_port);
                                        log(DEBUG,"Accepted socket %d",incomingSockfd);
                                        /* Years and years ago, we used to resolve here
                                         * using gethostbyaddr(). That is sucky and we
                                         * don't do that any more...
                                         */
                                        NonBlocking(incomingSockfd);
                                        if (Config->GetIOHook(in_port))
                                        {
                                                try
                                                {
                                                        Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, (char*)inet_ntoa(client.sin_addr), in_port);
                                                }
                                                catch (ModuleException& modexcept)
                                                {
                                                        log(DEBUG,"Module exception cought: %s",modexcept.GetReason()); \
                                                }
                                        }
                                        stats->statsAccept++;
                                        AddClient(incomingSockfd, in_port, false, client.sin_addr);
                                        log(DEBUG,"Adding client on port %lu fd=%lu",(unsigned long)in_port,(unsigned long)incomingSockfd);
                                }
                                else
                                {
                                        log(DEBUG,"Accept failed on fd %lu: %s",(unsigned long)incomingSockfd,strerror(errno));
                                        shutdown(incomingSockfd,2);
                                        close(incomingSockfd);
                                        stats->statsRefused++;
                                }
                        break;

                        default:
                                /* Something went wrong if we're in here.
                                 * In fact, so wrong, im not quite sure
                                 * what we would do, so for now, its going
                                 * to safely do bugger all.
                                 */
                        break;
                }
        }
	yield_depth--;
}

int InspIRCd::Run()
{
	/* Until THIS point, ServerInstance == NULL */
	
        LoadAllModules(this);

        printf("\nInspIRCd is now running!\n");
	
	if (!Config->nofork)
	{
		freopen("/dev/null","w",stdout);
		freopen("/dev/null","w",stderr);
	}

	/* Add the listening sockets used for client inbound connections
	 * to the socket engine
	 */
	for (int count = 0; count < stats->BoundPortCount; count++)
		SE->AddFd(openSockfd[count],true,X_LISTEN);

	WritePID(Config->PID);

	/* main loop, this never returns */
	expire_run = false;
	yield_depth = 0;

	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)
{
        ServerInstance = new InspIRCd(argc, argv);
        ServerInstance->Run();
        delete ServerInstance;
        return 0;
}