summaryrefslogtreecommitdiff
path: root/src/modules/m_spanningtree/main.cpp
blob: b8540cf2769f946b64bdb94e0455adeddaa584c1 (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
/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2007-2009 Craig Edwards <craigedwards@brainbox.cc>
 *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
 *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
 *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
 *
 * This file is part of InspIRCd.  InspIRCd 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 2.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */


/* $ModDesc: Provides a spanning tree server link protocol */

#include "inspircd.h"
#include "socket.h"
#include "xline.h"

#include "cachetimer.h"
#include "resolvers.h"
#include "main.h"
#include "utils.h"
#include "treeserver.h"
#include "link.h"
#include "treesocket.h"
#include "commands.h"
#include "protocolinterface.h"

ModuleSpanningTree::ModuleSpanningTree()
{
	Utils = new SpanningTreeUtilities(this);
	commands = new SpanningTreeCommands(this);
	RefreshTimer = NULL;
}

SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
	: rconnect(module, module->Utils), rsquit(module, module->Utils),
	svsjoin(module), svspart(module), svsnick(module), metadata(module),
	uid(module), opertype(module), fjoin(module), fmode(module), ftopic(module),
	fhost(module), fident(module), fname(module)
{
}

void ModuleSpanningTree::init()
{
	ServerInstance->Modules->AddService(commands->rconnect);
	ServerInstance->Modules->AddService(commands->rsquit);
	ServerInstance->Modules->AddService(commands->svsjoin);
	ServerInstance->Modules->AddService(commands->svspart);
	ServerInstance->Modules->AddService(commands->svsnick);
	ServerInstance->Modules->AddService(commands->metadata);
	ServerInstance->Modules->AddService(commands->uid);
	ServerInstance->Modules->AddService(commands->opertype);
	ServerInstance->Modules->AddService(commands->fjoin);
	ServerInstance->Modules->AddService(commands->fmode);
	ServerInstance->Modules->AddService(commands->ftopic);
	ServerInstance->Modules->AddService(commands->fhost);
	ServerInstance->Modules->AddService(commands->fident);
	ServerInstance->Modules->AddService(commands->fname);
	RefreshTimer = new CacheRefreshTimer(Utils);
	ServerInstance->Timers->AddTimer(RefreshTimer);

	Implementation eventlist[] =
	{
		I_OnPreCommand, I_OnGetServerDescription, I_OnUserInvite, I_OnPostTopicChange,
		I_OnWallops, I_OnUserNotice, I_OnUserMessage, I_OnBackgroundTimer, I_OnUserJoin,
		I_OnChangeHost, I_OnChangeName, I_OnChangeIdent, I_OnUserPart, I_OnUnloadModule,
		I_OnUserQuit, I_OnUserPostNick, I_OnUserKick, I_OnRemoteKill, I_OnRehash, I_OnPreRehash,
		I_OnOper, I_OnAddLine, I_OnDelLine, I_OnMode, I_OnLoadModule, I_OnStats,
		I_OnSetAway, I_OnPostCommand, I_OnUserConnect, I_OnAcceptConnection
	};
	ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));

	delete ServerInstance->PI;
	ServerInstance->PI = new SpanningTreeProtocolInterface(this, Utils);
	loopCall = false;

	// update our local user count
	Utils->TreeRoot->SetUserCount(ServerInstance->Users->local_users.size());
}

void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
{
	std::string Parent = Utils->TreeRoot->GetName();
	if (Current->GetParent())
	{
		Parent = Current->GetParent()->GetName();
	}
	for (unsigned int q = 0; q < Current->ChildCount(); q++)
	{
		if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName()))))
		{
			if (IS_OPER(user))
			{
				 ShowLinks(Current->GetChild(q),user,hops+1);
			}
		}
		else
		{
			ShowLinks(Current->GetChild(q),user,hops+1);
		}
	}
	/* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
	if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName())) && (!IS_OPER(user)))
		return;
	/* Or if the server is hidden and they're not an oper */
	else if ((Current->Hidden) && (!IS_OPER(user)))
		return;

	std::string servername = Current->GetName();
	user->WriteNumeric(364, "%s %s %s :%d %s",	user->nick.c_str(), servername.c_str(),
			(Utils->FlatLinks && (!IS_OPER(user))) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
			(Utils->FlatLinks && (!IS_OPER(user))) ? 0 : hops,
			Current->GetDesc().c_str());
}

int ModuleSpanningTree::CountServs()
{
	return Utils->serverlist.size();
}

void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
{
	ShowLinks(Utils->TreeRoot,user,0);
	user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick.c_str());
	return;
}

std::string ModuleSpanningTree::TimeToStr(time_t secs)
{
	time_t mins_up = secs / 60;
	time_t hours_up = mins_up / 60;
	time_t days_up = hours_up / 24;
	secs = secs % 60;
	mins_up = mins_up % 60;
	hours_up = hours_up % 24;
	return ((days_up ? (ConvToStr(days_up) + "d") : "")
			+ (hours_up ? (ConvToStr(hours_up) + "h") : "")
			+ (mins_up ? (ConvToStr(mins_up) + "m") : "")
			+ ConvToStr(secs) + "s");
}

void ModuleSpanningTree::DoPingChecks(time_t curtime)
{
	/*
	 * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
	 * This prevents lost REMOTECONNECT notices
	 */
	long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000);

restart:
	for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
	{
		TreeServer *s = i->second;

		if (s->GetSocket() && s->GetSocket()->GetLinkState() == DYING)
		{
			s->GetSocket()->Close();
			goto restart;
		}

		// Fix for bug #792, do not ping servers that are not connected yet!
		// Remote servers have Socket == NULL and local connected servers have
		// Socket->LinkState == CONNECTED
		if (s->GetSocket() && s->GetSocket()->GetLinkState() != CONNECTED)
			continue;

		// Now do PING checks on all servers
		TreeServer *mts = Utils->BestRouteTo(s->GetID());

		if (mts)
		{
			// Only ping if this server needs one
			if (curtime >= s->NextPingTime())
			{
				// And if they answered the last
				if (s->AnsweredLastPing())
				{
					// They did, send a ping to them
					s->SetNextPingTime(curtime + Utils->PingFreq);
					TreeSocket *tsock = mts->GetSocket();

					// ... if we can find a proper route to them
					if (tsock)
					{
						tsock->WriteLine(":" + ServerInstance->Config->GetSID() + " PING " +
								ServerInstance->Config->GetSID() + " " + s->GetID());
						s->LastPingMsec = ts;
					}
				}
				else
				{
					// They didn't answer the last ping, if they are locally connected, get rid of them.
					TreeSocket *sock = s->GetSocket();
					if (sock)
					{
						sock->SendError("Ping timeout");
						sock->Close();
						goto restart;
					}
				}
			}

			// If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
			if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
			{
				/* The server hasnt responded, send a warning to opers */
				std::string servername = s->GetName();
				ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", servername.c_str(), Utils->PingWarnTime);
				s->Warned = true;
			}
		}
	}
}

void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
{
	if (!a)
		return;
	for(unsigned int j=0; j < a->servers.size(); j++)
	{
		if (Utils->FindServer(a->servers[j]))
		{
			// found something in this block. Should the server fail,
			// we want to start at the start of the list, not in the
			// middle where we left off
			a->position = -1;
			return;
		}
	}
	if (on_timer && a->position >= 0)
		return;
	if (!on_timer && a->position < 0)
		return;

	a->position++;
	while (a->position < (int)a->servers.size())
	{
		Link* x = Utils->FindLink(a->servers[a->position]);
		if (x)
		{
			ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
			ConnectServer(x, a);
			return;
		}
		a->position++;
	}
	// Autoconnect chain has been fully iterated; start at the beginning on the
	// next AutoConnectServers run
	a->position = -1;
}

void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
{
	bool ipvalid = true;

	if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
	{
		ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
		return;
	}

	QueryType start_type = DNS_QUERY_A;
	start_type = DNS_QUERY_AAAA;
	if (strchr(x->IPAddr.c_str(),':'))
	{
		in6_addr n;
		if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
			ipvalid = false;
	}
	else
	{
		in_addr n;
		if (inet_aton(x->IPAddr.c_str(),&n) < 1)
			ipvalid = false;
	}

	/* Do we already have an IP? If so, no need to resolve it. */
	if (ipvalid)
	{
		/* Gave a hook, but it wasnt one we know */
		TreeSocket* newsocket = new TreeSocket(Utils, x, y, x->IPAddr);
		if (newsocket->GetFd() > -1)
		{
			/* Handled automatically on success */
		}
		else
		{
			ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
				x->Name.c_str(), newsocket->getError().c_str());
			ServerInstance->GlobalCulls.AddItem(newsocket);
		}
	}
	else
	{
		try
		{
			bool cached = false;
			ServernameResolver* snr = new ServernameResolver(Utils, x->IPAddr, x, cached, start_type, y);
			ServerInstance->AddResolver(snr, cached);
		}
		catch (ModuleException& e)
		{
			ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
			ConnectServer(y, false);
		}
	}
}

void ModuleSpanningTree::AutoConnectServers(time_t curtime)
{
	for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
	{
		Autoconnect* x = *i;
		if (curtime >= x->NextConnectTime)
		{
			x->NextConnectTime = curtime + x->Period;
			ConnectServer(x, true);
		}
	}
}

void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
{
	std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
	while (i != Utils->timeoutlist.end())
	{
		TreeSocket* s = i->first;
		std::pair<std::string, int> p = i->second;
		std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
		i++;
		if (s->GetLinkState() == DYING)
		{
			Utils->timeoutlist.erase(me);
			s->Close();
		}
		else if (curtime > s->age + p.second)
		{
			ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
			Utils->timeoutlist.erase(me);
			s->Close();
		}
	}
}

ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
{
	// we've already checked if pcnt > 0, so this is safe
	TreeServer* found = Utils->FindServerMask(parameters[0]);
	if (found)
	{
		std::string Version = found->GetVersion();
		user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
		if (found == Utils->TreeRoot)
		{
			ServerInstance->Config->Send005(user);
		}
	}
	else
	{
		user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
	}
	return MOD_RES_DENY;
}

/* This method will attempt to get a message to a remote user.
 */
void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
{
	char text[MAXBUF];
	va_list argsPtr;

	va_start(argsPtr, format);
	vsnprintf(text, MAXBUF, format, argsPtr);
	va_end(argsPtr);

	if (IS_LOCAL(user))
		user->WriteServ("NOTICE %s :%s", user->nick.c_str(), text);
	else
		ServerInstance->PI->SendUserNotice(user, text);
}

ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
{
	for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
	{
		Link* x = *i;
		if (InspIRCd::Match(x->Name.c_str(),parameters[0]))
		{
			if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
			{
				RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
				return MOD_RES_DENY;
			}

			TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
			if (!CheckDupe)
			{
				RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
				ConnectServer(x);
				return MOD_RES_DENY;
			}
			else
			{
				std::string servername = CheckDupe->GetParent()->GetName();
				RemoteMessage(user, "*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002", x->Name.c_str(), servername.c_str());
				return MOD_RES_DENY;
			}
		}
	}
	RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
	return MOD_RES_DENY;
}

void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
{
	TreeServer* s = Utils->FindServer(servername);
	if (s)
	{
		description = s->GetDesc();
	}
}

void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
{
	if (IS_LOCAL(source))
	{
		parameterlist params;
		params.push_back(dest->uuid);
		params.push_back(channel->name);
		params.push_back(ConvToStr(expiry));
		Utils->DoOneToMany(source->uuid,"INVITE",params);
	}
}

void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
{
	// Drop remote events on the floor.
	if (!IS_LOCAL(user))
		return;

	parameterlist params;
	params.push_back(chan->name);
	params.push_back(":"+topic);
	Utils->DoOneToMany(user->uuid,"TOPIC",params);
}

void ModuleSpanningTree::OnWallops(User* user, const std::string &text)
{
	if (IS_LOCAL(user))
	{
		parameterlist params;
		params.push_back(":"+text);
		Utils->DoOneToMany(user->uuid,"WALLOPS",params);
	}
}

void ModuleSpanningTree::OnUserNotice(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
{
	/* Server origin */
	if (user == NULL)
		return;

	if (target_type == TYPE_USER)
	{
		User* d = (User*)dest;
		if (!IS_LOCAL(d) && IS_LOCAL(user))
		{
			parameterlist params;
			params.push_back(d->uuid);
			params.push_back(":"+text);
			Utils->DoOneToOne(user->uuid,"NOTICE",params,d->server);
		}
	}
	else if (target_type == TYPE_CHANNEL)
	{
		if (IS_LOCAL(user))
		{
			Channel *c = (Channel*)dest;
			if (c)
			{
				std::string cname = c->name;
				if (status)
					cname = status + cname;
				TreeServerList list;
				Utils->GetListOfServersForChannel(c,list,status,exempt_list);
				for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
				{
					TreeSocket* Sock = i->second->GetSocket();
					if (Sock)
						Sock->WriteLine(":"+std::string(user->uuid)+" NOTICE "+cname+" :"+text);
				}
			}
		}
	}
	else if (target_type == TYPE_SERVER)
	{
		if (IS_LOCAL(user))
		{
			char* target = (char*)dest;
			parameterlist par;
			par.push_back(target);
			par.push_back(":"+text);
			Utils->DoOneToMany(user->uuid,"NOTICE",par);
		}
	}
}

void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
{
	/* Server origin */
	if (user == NULL)
		return;

	if (target_type == TYPE_USER)
	{
		// route private messages which are targetted at clients only to the server
		// which needs to receive them
		User* d = (User*)dest;
		if (!IS_LOCAL(d) && (IS_LOCAL(user)))
		{
			parameterlist params;
			params.push_back(d->uuid);
			params.push_back(":"+text);
			Utils->DoOneToOne(user->uuid,"PRIVMSG",params,d->server);
		}
	}
	else if (target_type == TYPE_CHANNEL)
	{
		if (IS_LOCAL(user))
		{
			Channel *c = (Channel*)dest;
			if (c)
			{
				std::string cname = c->name;
				if (status)
					cname = status + cname;
				TreeServerList list;
				Utils->GetListOfServersForChannel(c,list,status,exempt_list);
				for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
				{
					TreeSocket* Sock = i->second->GetSocket();
					if (Sock)
						Sock->WriteLine(":"+std::string(user->uuid)+" PRIVMSG "+cname+" :"+text);
				}
			}
		}
	}
	else if (target_type == TYPE_SERVER)
	{
		if (IS_LOCAL(user))
		{
			char* target = (char*)dest;
			parameterlist par;
			par.push_back(target);
			par.push_back(":"+text);
			Utils->DoOneToMany(user->uuid,"PRIVMSG",par);
		}
	}
}

void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
{
	AutoConnectServers(curtime);
	DoPingChecks(curtime);
	DoConnectTimeout(curtime);
}

void ModuleSpanningTree::OnUserConnect(LocalUser* user)
{
	if (user->quitting)
		return;

	parameterlist params;
	params.push_back(user->uuid);
	params.push_back(ConvToStr(user->age));
	params.push_back(user->nick);
	params.push_back(user->host);
	params.push_back(user->dhost);
	params.push_back(user->ident);
	params.push_back(user->GetIPString());
	params.push_back(ConvToStr(user->signon));
	params.push_back("+"+std::string(user->FormatModes(true)));
	params.push_back(":"+user->fullname);
	Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);

	if (IS_OPER(user))
	{
		params.clear();
		params.push_back(user->oper->name);
		Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
	}

	for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
	{
		ExtensionItem* item = i->first;
		std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
		if (!value.empty())
			ServerInstance->PI->SendMetaData(user, item->name, value);
	}

	Utils->TreeRoot->SetUserCount(1); // increment by 1
}

void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
{
	// Only do this for local users
	if (IS_LOCAL(memb->user))
	{
		parameterlist params;
		// set up their permissions and the channel TS with FJOIN.
		// All users are FJOINed now, because a module may specify
		// new joining permissions for the user.
		params.push_back(memb->chan->name);
		params.push_back(ConvToStr(memb->chan->age));
		params.push_back(std::string("+") + memb->chan->ChanModes(true));
		params.push_back(memb->modes+","+memb->user->uuid);
		Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
	}
}

void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
{
	if (user->registered != REG_ALL || !IS_LOCAL(user))
		return;

	parameterlist params;
	params.push_back(newhost);
	Utils->DoOneToMany(user->uuid,"FHOST",params);
}

void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
{
	if (user->registered != REG_ALL || !IS_LOCAL(user))
		return;

	parameterlist params;
	params.push_back(gecos);
	Utils->DoOneToMany(user->uuid,"FNAME",params);
}

void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
{
	// only occurs for local clients
	if (user->registered != REG_ALL)
		return;

	parameterlist params;
	params.push_back(ident);
	Utils->DoOneToMany(user->uuid,"FIDENT",params);
}

void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
{
	if (IS_LOCAL(memb->user))
	{
		parameterlist params;
		params.push_back(memb->chan->name);
		if (!partmessage.empty())
			params.push_back(":"+partmessage);
		Utils->DoOneToMany(memb->user->uuid,"PART",params);
	}
}

void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
{
	if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
	{
		parameterlist params;

		if (oper_message != reason)
		{
			params.push_back(":"+oper_message);
			Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
		}
		params.clear();
		params.push_back(":"+reason);
		Utils->DoOneToMany(user->uuid,"QUIT",params);
	}

	// Regardless, We need to modify the user Counts..
	TreeServer* SourceServer = Utils->FindServer(user->server);
	if (SourceServer)
	{
		SourceServer->SetUserCount(-1); // decrement by 1
	}
}

void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
{
	if (IS_LOCAL(user))
	{
		parameterlist params;
		params.push_back(user->nick);

		/** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
		 */
		if (irc::string(user->nick.c_str()) != assign(oldnick))
			user->age = ServerInstance->Time();

		params.push_back(ConvToStr(user->age));
		Utils->DoOneToMany(user->uuid,"NICK",params);
	}
	else if (!loopCall && user->nick == user->uuid)
	{
		parameterlist params;
		params.push_back(user->uuid);
		params.push_back(ConvToStr(user->age));
		Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
	}
}

void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
{
	parameterlist params;
	params.push_back(memb->chan->name);
	params.push_back(memb->user->uuid);
	params.push_back(":"+reason);
	if (IS_LOCAL(source))
	{
		Utils->DoOneToMany(source->uuid,"KICK",params);
	}
	else if (source == ServerInstance->FakeClient)
	{
		Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
	}
}

void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
{
	if (!IS_LOCAL(source))
		return; // Only start routing if we're origin.

	ServerInstance->OperQuit.set(dest, operreason);
	parameterlist params;
	params.push_back(":"+operreason);
	Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
	params.clear();
	params.push_back(dest->uuid);
	params.push_back(":"+reason);
	Utils->DoOneToMany(source->uuid,"KILL",params);
}

void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
{
	ServerInstance->Logs->Log("remoterehash", DEBUG, "called with param %s", parameter.c_str());

	// Send out to other servers
	if (!parameter.empty() && parameter[0] != '-')
	{
		parameterlist params;
		params.push_back(parameter);
		Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
	}
}

void ModuleSpanningTree::OnRehash(User* user)
{
	// Re-read config stuff
	try
	{
		Utils->ReadConfiguration();
	}
	catch (ModuleException& e)
	{
		// Refresh the IP cache anyway, so servers read before the error will be allowed to connect
		Utils->RefreshIPCache();
		// Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
		std::string msg = "Error in configuration: ";
		msg.append(e.GetReason());
		ServerInstance->SNO->WriteToSnoMask('l', msg);
		if (!IS_LOCAL(user))
			ServerInstance->PI->SendSNONotice("L", msg);
	}
}

void ModuleSpanningTree::OnLoadModule(Module* mod)
{
	std::string data;
	data.push_back('+');
	data.append(mod->ModuleSourceFile);
	Version v = mod->GetVersion();
	if (!v.link_data.empty())
	{
		data.push_back('=');
		data.append(v.link_data);
	}
	ServerInstance->PI->SendMetaData(NULL, "modules", data);
}

void ModuleSpanningTree::OnUnloadModule(Module* mod)
{
	ServerInstance->PI->SendMetaData(NULL, "modules", "-" + mod->ModuleSourceFile);

	unsigned int items = Utils->TreeRoot->ChildCount();
	for(unsigned int x = 0; x < items; x++)
	{
		TreeServer* srv = Utils->TreeRoot->GetChild(x);
		TreeSocket* sock = srv->GetSocket();
		if (sock && sock->GetIOHook() == mod)
		{
			sock->SendError("SSL module unloaded");
			sock->Close();
		}
	}
}

// note: the protocol does not allow direct umode +o except
// via NICK with 8 params. sending OPERTYPE infers +o modechange
// locally.
void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
{
	if (user->registered != REG_ALL || !IS_LOCAL(user))
		return;
	parameterlist params;
	params.push_back(opertype);
	Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
}

void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
{
	if (!x->IsBurstable() || loopCall)
		return;

	parameterlist params;
	params.push_back(x->type);
	params.push_back(x->Displayable());
	params.push_back(ServerInstance->Config->ServerName);
	params.push_back(ConvToStr(x->set_time));
	params.push_back(ConvToStr(x->duration));
	params.push_back(":" + x->reason);

	if (!user)
	{
		/* Server-set lines */
		Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
	}
	else if (IS_LOCAL(user))
	{
		/* User-set lines */
		Utils->DoOneToMany(user->uuid, "ADDLINE", params);
	}
}

void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
{
	if (!x->IsBurstable() || loopCall)
		return;

	parameterlist params;
	params.push_back(x->type);
	params.push_back(x->Displayable());

	if (!user)
	{
		/* Server-unset lines */
		Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
	}
	else if (IS_LOCAL(user))
	{
		/* User-unset lines */
		Utils->DoOneToMany(user->uuid, "DELLINE", params);
	}
}

void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const parameterlist &text, const std::vector<TranslateType> &translate)
{
	if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
	{
		parameterlist params;
		std::string output_text;

		ServerInstance->Parser->TranslateUIDs(translate, text, output_text);

		if (target_type == TYPE_USER)
		{
			User* u = (User*)dest;
			params.push_back(u->uuid);
			params.push_back(output_text);
			Utils->DoOneToMany(user->uuid, "MODE", params);
		}
		else
		{
			Channel* c = (Channel*)dest;
			params.push_back(c->name);
			params.push_back(ConvToStr(c->age));
			params.push_back(output_text);
			Utils->DoOneToMany(user->uuid, "FMODE", params);
		}
	}
}

ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
{
	if (IS_LOCAL(user))
	{
		parameterlist params;
		if (!awaymsg.empty())
		{
			params.push_back(ConvToStr(user->awaytime));
			params.push_back(":" + awaymsg);
		}
		Utils->DoOneToMany(user->uuid, "AWAY", params);
	}

	return MOD_RES_PASSTHRU;
}

void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
{
	TreeSocket* s = (TreeSocket*)opaque;
	std::string output_text;

	ServerInstance->Parser->TranslateUIDs(translate, modeline, output_text);

	if (target)
	{
		if (target_type == TYPE_USER)
		{
			User* u = (User*)target;
			s->WriteLine(":"+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
		}
		else if (target_type == TYPE_CHANNEL)
		{
			Channel* c = (Channel*)target;
			s->WriteLine(":"+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
		}
	}
}

void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
{
	TreeSocket* s = static_cast<TreeSocket*>(opaque);
	User* u = dynamic_cast<User*>(target);
	Channel* c = dynamic_cast<Channel*>(target);
	if (u)
		s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
	else if (c)
		s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+extname+" :"+extdata);
	else if (!target)
		s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
}

CullResult ModuleSpanningTree::cull()
{
	Utils->cull();
	ServerInstance->Timers->DelTimer(RefreshTimer);
	return this->Module::cull();
}

ModuleSpanningTree::~ModuleSpanningTree()
{
	delete ServerInstance->PI;
	ServerInstance->PI = new ProtocolInterface;

	/* This will also free the listeners */
	delete Utils;

	delete commands;
}

Version ModuleSpanningTree::GetVersion()
{
	return Version("Allows servers to be linked", VF_VENDOR);
}

/* It is IMPORTANT that m_spanningtree is the last module in the chain
 * so that any activity it sees is FINAL, e.g. we arent going to send out
 * a NICK message before m_cloaking has finished putting the +x on the user,
 * etc etc.
 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 * the module call queue.
 */
void ModuleSpanningTree::Prioritize()
{
	ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
}

MODULE_INIT(ModuleSpanningTree)