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1 /*       +------------------------------------+
2  *       | Inspire Internet Relay Chat Daemon |
3  *       +------------------------------------+
4  *
5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
6  * See: http://www.inspircd.org/wiki/index.php/Credits
7  *
8  * This program is free but copyrighted software; see
9  *          the file COPYING for details.
10  *
11  * ---------------------------------------------------
12  */
13
14 /* $ModDesc: Provides a spanning tree server link protocol */
15
16 #include "inspircd.h"
17 #include "commands/cmd_whois.h"
18 #include "commands/cmd_stats.h"
19 #include "socket.h"
20 #include "wildcard.h"
21 #include "xline.h"
22 #include "transport.h"
23
24 #include "m_spanningtree/timesynctimer.h"
25 #include "m_spanningtree/resolvers.h"
26 #include "m_spanningtree/main.h"
27 #include "m_spanningtree/utils.h"
28 #include "m_spanningtree/treeserver.h"
29 #include "m_spanningtree/link.h"
30 #include "m_spanningtree/treesocket.h"
31 #include "m_spanningtree/rconnect.h"
32 #include "m_spanningtree/rsquit.h"
33 #include "m_spanningtree/protocolinterface.h"
34
35 /* $ModDep: m_spanningtree/timesynctimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h m_spanningtree/rconnect.h m_spanningtree/rsquit.h m_spanningtree/protocolinterface.h */
36
37 ModuleSpanningTree::ModuleSpanningTree(InspIRCd* Me)
38         : Module(Me), max_local(0), max_global(0)
39 {
40         ServerInstance->Modules->UseInterface("BufferedSocketHook");
41         Utils = new SpanningTreeUtilities(ServerInstance, this);
42         command_rconnect = new cmd_rconnect(ServerInstance, this, Utils);
43         ServerInstance->AddCommand(command_rconnect);
44         command_rsquit = new cmd_rsquit(ServerInstance, this, Utils);
45         ServerInstance->AddCommand(command_rsquit);
46         RefreshTimer = new CacheRefreshTimer(ServerInstance, Utils);
47         ServerInstance->Timers->AddTimer(RefreshTimer);
48
49         Implementation eventlist[] =
50         {
51                 I_OnPreCommand, I_OnGetServerDescription, I_OnUserInvite, I_OnPostLocalTopicChange,
52                 I_OnWallops, I_OnUserNotice, I_OnUserMessage, I_OnBackgroundTimer,
53                 I_OnUserJoin, I_OnChangeHost, I_OnChangeName, I_OnUserPart, I_OnPostConnect,
54                 I_OnUserQuit, I_OnUserPostNick, I_OnUserKick, I_OnRemoteKill, I_OnRehash,
55                 I_OnOper, I_OnAddLine, I_OnDelLine, I_ProtoSendMode, I_OnMode,
56                 I_OnStats, I_ProtoSendMetaData, I_OnEvent, I_OnSetAway, I_OnPostCommand
57         };
58         ServerInstance->Modules->Attach(eventlist, this, 28);
59
60         delete ServerInstance->PI;
61         ServerInstance->PI = new SpanningTreeProtocolInterface(this, Utils, ServerInstance);
62
63         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
64         {
65                 this->OnPostConnect((*i));
66         }
67 }
68
69 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
70 {
71         std::string Parent = Utils->TreeRoot->GetName();
72         if (Current->GetParent())
73         {
74                 Parent = Current->GetParent()->GetName();
75         }
76         for (unsigned int q = 0; q < Current->ChildCount(); q++)
77         {
78                 if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))))
79                 {
80                         if (*user->oper)
81                         {
82                                  ShowLinks(Current->GetChild(q),user,hops+1);
83                         }
84                 }
85                 else
86                 {
87                         ShowLinks(Current->GetChild(q),user,hops+1);
88                 }
89         }
90         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
91         if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!IS_OPER(user)))
92                 return;
93         /* Or if the server is hidden and they're not an oper */
94         else if ((Current->Hidden) && (!IS_OPER(user)))
95                 return;
96
97         user->WriteNumeric(364, "%s %s %s :%d %s",      user->nick,Current->GetName().c_str(),
98                         (Utils->FlatLinks && (!IS_OPER(user))) ? ServerInstance->Config->ServerName : Parent.c_str(),
99                         (Utils->FlatLinks && (!IS_OPER(user))) ? 0 : hops,
100                         Current->GetDesc().c_str());
101 }
102
103 int ModuleSpanningTree::CountLocalServs()
104 {
105         return Utils->TreeRoot->ChildCount();
106 }
107
108 int ModuleSpanningTree::CountServs()
109 {
110         return Utils->serverlist.size();
111 }
112
113 void ModuleSpanningTree::HandleLinks(const char* const* parameters, int pcnt, User* user)
114 {
115         ShowLinks(Utils->TreeRoot,user,0);
116         user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick);
117         return;
118 }
119
120 void ModuleSpanningTree::HandleLusers(const char* const* parameters, int pcnt, User* user)
121 {
122         unsigned int n_users = ServerInstance->Users->UserCount();
123
124         /* Only update these when someone wants to see them, more efficient */
125         if ((unsigned int)ServerInstance->Users->LocalUserCount() > max_local)
126                 max_local = ServerInstance->Users->LocalUserCount();
127         if (n_users > max_global)
128                 max_global = n_users;
129
130         unsigned int ulined_count = 0;
131         unsigned int ulined_local_count = 0;
132
133         /* If ulined are hidden and we're not an oper, count the number of ulined servers hidden,
134          * locally and globally (locally means directly connected to us)
135          */
136         if ((Utils->HideULines) && (!*user->oper))
137         {
138                 for (server_hash::iterator q = Utils->serverlist.begin(); q != Utils->serverlist.end(); q++)
139                 {
140                         if (ServerInstance->ULine(q->second->GetName().c_str()))
141                         {
142                                 ulined_count++;
143                                 if (q->second->GetParent() == Utils->TreeRoot)
144                                         ulined_local_count++;
145                         }
146                 }
147         }
148         user->WriteNumeric(251, "%s :There are %d users and %d invisible on %d servers",user->nick,
149                         n_users-ServerInstance->Users->ModeCount('i'),
150                         ServerInstance->Users->ModeCount('i'),
151                         ulined_count ? this->CountServs() - ulined_count : this->CountServs());
152
153         if (ServerInstance->Users->OperCount())
154                 user->WriteNumeric(252, "%s %d :operator(s) online",user->nick,ServerInstance->Users->OperCount());
155
156         if (ServerInstance->Users->UnregisteredUserCount())
157                 user->WriteNumeric(253, "%s %d :unknown connections",user->nick,ServerInstance->Users->UnregisteredUserCount());
158         
159         if (ServerInstance->ChannelCount())
160                 user->WriteNumeric(254, "%s %ld :channels formed",user->nick,ServerInstance->ChannelCount());
161         
162         user->WriteNumeric(255, "%s :I have %d clients and %d servers",user->nick,ServerInstance->Users->LocalUserCount(),ulined_local_count ? this->CountLocalServs() - ulined_local_count : this->CountLocalServs());
163         user->WriteNumeric(265, "%s :Current Local Users: %d  Max: %d",user->nick,ServerInstance->Users->LocalUserCount(),max_local);
164         user->WriteNumeric(266, "%s :Current Global Users: %d  Max: %d",user->nick,n_users,max_global);
165         return;
166 }
167
168 std::string ModuleSpanningTree::TimeToStr(time_t secs)
169 {
170         time_t mins_up = secs / 60;
171         time_t hours_up = mins_up / 60;
172         time_t days_up = hours_up / 24;
173         secs = secs % 60;
174         mins_up = mins_up % 60;
175         hours_up = hours_up % 24;
176         return ((days_up ? (ConvToStr(days_up) + "d") : std::string(""))
177                         + (hours_up ? (ConvToStr(hours_up) + "h") : std::string(""))
178                         + (mins_up ? (ConvToStr(mins_up) + "m") : std::string(""))
179                         + ConvToStr(secs) + "s");
180 }
181
182 void ModuleSpanningTree::DoPingChecks(time_t curtime)
183 {
184         for (unsigned int j = 0; j < Utils->TreeRoot->ChildCount(); j++)
185         {
186                 TreeServer* serv = Utils->TreeRoot->GetChild(j);
187                 TreeSocket* sock = serv->GetSocket();
188                 if (sock)
189                 {
190                         if (curtime >= serv->NextPingTime())
191                         {
192                                 if (serv->AnsweredLastPing())
193                                 {
194                                         sock->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" PING "+serv->GetID());
195                                         serv->SetNextPingTime(curtime + Utils->PingFreq);
196                                         timeval t;
197                                         gettimeofday(&t, NULL);
198                                         long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
199                                         serv->LastPingMsec = ts;
200                                         serv->Warned = false;
201                                 }
202                                 else
203                                 {
204                                         /* they didnt answer, boot them */
205                                         sock->SendError("Ping timeout");
206                                         sock->Squit(serv,"Ping timeout");
207                                         ServerInstance->SE->DelFd(sock);
208                                         sock->Close();
209                                         return;
210                                 }
211                         }
212                         else if ((Utils->PingWarnTime) && (!serv->Warned) && (curtime >= serv->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!serv->AnsweredLastPing()))
213                         {
214                                 /* The server hasnt responded, send a warning to opers */
215                                 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", serv->GetName().c_str(), Utils->PingWarnTime);
216                                 serv->Warned = true;
217                         }
218                 }
219         }
220
221         /*
222          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
223          * This prevents lost REMOTECONNECT notices
224          * XXX this should probably not do this until server has been bursting for, say, 60 seconds or something
225          */
226         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
227         {
228                 if (i->second->bursting)
229                 {
230                         ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not finished burst, forcing end of burst.", i->second->GetName().c_str());
231                         i->second->FinishBurst();
232                 }
233         }
234 }
235
236 void ModuleSpanningTree::ConnectServer(Link* x)
237 {
238         bool ipvalid = true;
239         QueryType start_type = DNS_QUERY_A;
240 #ifdef IPV6
241         start_type = DNS_QUERY_AAAA;
242         if (strchr(x->IPAddr.c_str(),':'))
243         {
244                 in6_addr n;
245                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
246                         ipvalid = false;
247         }
248         else
249 #endif
250         {
251                 in_addr n;
252                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
253                         ipvalid = false;
254         }
255
256         /* Do we already have an IP? If so, no need to resolve it. */
257         if (ipvalid)
258         {
259                 /* Gave a hook, but it wasnt one we know */
260                 if ((!x->Hook.empty()) && (Utils->hooks.find(x->Hook.c_str()) == Utils->hooks.end()))
261                         return;
262                 TreeSocket* newsocket = new TreeSocket(Utils, ServerInstance, x->IPAddr,x->Port,false,x->Timeout ? x->Timeout : 10,x->Name.c_str(), x->Bind, x->Hook.empty() ? NULL : Utils->hooks[x->Hook.c_str()]);
263                 if (newsocket->GetFd() > -1)
264                 {
265                         /* Handled automatically on success */
266                 }
267                 else
268                 {
269                         RemoteMessage(NULL, "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
270                         if (ServerInstance->SocketCull.find(newsocket) == ServerInstance->SocketCull.end())
271                                 ServerInstance->SocketCull[newsocket] = newsocket;
272                         Utils->DoFailOver(x);
273                 }
274         }
275         else
276         {
277                 try
278                 {
279                         bool cached;
280                         ServernameResolver* snr = new ServernameResolver((Module*)this, Utils, ServerInstance,x->IPAddr, *x, cached, start_type);
281                         ServerInstance->AddResolver(snr, cached);
282                 }
283                 catch (ModuleException& e)
284                 {
285                         RemoteMessage(NULL, "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
286                         Utils->DoFailOver(x);
287                 }
288         }
289 }
290
291 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
292 {
293         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
294         {
295                 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
296                 {
297                         x->NextConnectTime = curtime + x->AutoConnect;
298                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
299                         if (x->FailOver.length())
300                         {
301                                 TreeServer* CheckFailOver = Utils->FindServer(x->FailOver.c_str());
302                                 if (CheckFailOver)
303                                 {
304                                         /* The failover for this server is currently a member of the network.
305                                          * The failover probably succeeded, where the main link did not.
306                                          * Don't try the main link until the failover is gone again.
307                                          */
308                                         continue;
309                                 }
310                         }
311                         if (!CheckDupe)
312                         {
313                                 // an autoconnected server is not connected. Check if its time to connect it
314                                 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
315                                 this->ConnectServer(&(*x));
316                         }
317                 }
318         }
319 }
320
321 int ModuleSpanningTree::HandleVersion(const char* const* parameters, int pcnt, User* user)
322 {
323         // we've already checked if pcnt > 0, so this is safe
324         TreeServer* found = Utils->FindServerMask(parameters[0]);
325         if (found)
326         {
327                 std::string Version = found->GetVersion();
328                 user->WriteNumeric(351, "%s :%s",user->nick,Version.c_str());
329                 if (found == Utils->TreeRoot)
330                 {
331                         ServerInstance->Config->Send005(user);
332                 }
333         }
334         else
335         {
336                 user->WriteNumeric(402, "%s %s :No such server",user->nick,parameters[0]);
337         }
338         return 1;
339 }
340
341 /* This method will attempt to get a link message out to as many people as is required.
342  * If a user is provided, and that user is local, then the user is sent the message using
343  * WriteServ (they are the local initiator of that message). If the user is remote, they are
344  * sent that message remotely via PUSH.
345  * If the user is NULL, then the notice is sent locally via WriteToSnoMask with snomask 'l',
346  * and remotely via SNONOTICE with mask 'l'.
347  */
348 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
349 {
350         /* This could cause an infinite loop, because DoOneToMany() will, on error,
351          * call TreeSocket::OnError(), which in turn will call this function to
352          * notify everyone of the error. So, drop any messages that are generated
353          * during the sending of another message. -Special */
354         static bool SendingRemoteMessage = false;
355         if (SendingRemoteMessage)
356                 return;
357         SendingRemoteMessage = true;
358
359         std::deque<std::string> params;
360         char text[MAXBUF];
361         va_list argsPtr;
362
363         va_start(argsPtr, format);
364         vsnprintf(text, MAXBUF, format, argsPtr);
365         va_end(argsPtr);
366
367         if (!user)
368         {
369                 /* No user, target it generically at everyone */
370                 ServerInstance->SNO->WriteToSnoMask('l', "%s", text);
371                 params.push_back("l");
372                 params.push_back(std::string(":") + text);
373                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "SNONOTICE", params);
374         }
375         else
376         {
377                 if (IS_LOCAL(user))
378                         user->WriteServ("NOTICE %s :%s", user->nick, text);
379                 else
380                 {
381                         params.push_back(user->uuid);
382                         params.push_back(std::string("::") + ServerInstance->Config->ServerName + " NOTICE " + user->nick + " :*** From " +
383                                         ServerInstance->Config->ServerName+ ": " + text);
384                         Utils->DoOneToMany(ServerInstance->Config->GetSID(), "PUSH", params);
385                 }
386         }
387         
388         SendingRemoteMessage = false;
389 }
390         
391 int ModuleSpanningTree::HandleConnect(const char* const* parameters, int pcnt, User* user)
392 {
393         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
394         {
395                 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
396                 {
397                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
398                         if (!CheckDupe)
399                         {
400                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
401                                 ConnectServer(&(*x));
402                                 return 1;
403                         }
404                         else
405                         {
406                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002",x->Name.c_str(),CheckDupe->GetParent()->GetName().c_str());
407                                 return 1;
408                         }
409                 }
410         }
411         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0]);
412         return 1;
413 }
414
415 void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
416 {
417         TreeServer* s = Utils->FindServer(servername);
418         if (s)
419         {
420                 description = s->GetDesc();
421         }
422 }
423
424 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
425 {
426         if (IS_LOCAL(source))
427         {
428                 std::deque<std::string> params;
429                 params.push_back(dest->uuid);
430                 params.push_back(channel->name);
431                 params.push_back(ConvToStr(expiry));
432                 Utils->DoOneToMany(source->uuid,"INVITE",params);
433         }
434 }
435
436 void ModuleSpanningTree::OnPostLocalTopicChange(User* user, Channel* chan, const std::string &topic)
437 {
438         std::deque<std::string> params;
439         params.push_back(chan->name);
440         params.push_back(":"+topic);
441         Utils->DoOneToMany(user->uuid,"TOPIC",params);
442 }
443
444 void ModuleSpanningTree::OnWallops(User* user, const std::string &text)
445 {
446         if (IS_LOCAL(user))
447         {
448                 std::deque<std::string> params;
449                 params.push_back(":"+text);
450                 Utils->DoOneToMany(user->uuid,"WALLOPS",params);
451         }
452 }
453
454 void ModuleSpanningTree::OnUserNotice(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
455 {
456         /* Server origin */
457         if (user == NULL)
458                 return;
459
460         if (target_type == TYPE_USER)
461         {
462                 User* d = (User*)dest;
463                 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
464                 {
465                         std::deque<std::string> params;
466                         params.clear();
467                         params.push_back(d->uuid);
468                         params.push_back(":"+text);
469                         Utils->DoOneToOne(user->uuid,"NOTICE",params,d->server);
470                 }
471         }
472         else if (target_type == TYPE_CHANNEL)
473         {
474                 if (IS_LOCAL(user))
475                 {
476                         Channel *c = (Channel*)dest;
477                         if (c)
478                         {
479                                 std::string cname = c->name;
480                                 if (status)
481                                         cname = status + cname;
482                                 TreeServerList list;
483                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
484                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
485                                 {
486                                         TreeSocket* Sock = i->second->GetSocket();
487                                         if (Sock)
488                                                 Sock->WriteLine(":"+std::string(user->uuid)+" NOTICE "+cname+" :"+text);
489                                 }
490                         }
491                 }
492         }
493         else if (target_type == TYPE_SERVER)
494         {
495                 if (IS_LOCAL(user))
496                 {
497                         char* target = (char*)dest;
498                         std::deque<std::string> par;
499                         par.push_back(target);
500                         par.push_back(":"+text);
501                         Utils->DoOneToMany(user->uuid,"NOTICE",par);
502                 }
503         }
504 }
505
506 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
507 {
508         /* Server origin */
509         if (user == NULL)
510                 return;
511
512         if (target_type == TYPE_USER)
513         {
514                 // route private messages which are targetted at clients only to the server
515                 // which needs to receive them
516                 User* d = (User*)dest;
517                 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
518                 {
519                         std::deque<std::string> params;
520                         params.clear();
521                         params.push_back(d->uuid);
522                         params.push_back(":"+text);
523                         Utils->DoOneToOne(user->uuid,"PRIVMSG",params,d->server);
524                 }
525         }
526         else if (target_type == TYPE_CHANNEL)
527         {
528                 if (IS_LOCAL(user))
529                 {
530                         Channel *c = (Channel*)dest;
531                         if (c)
532                         {
533                                 std::string cname = c->name;
534                                 if (status)
535                                         cname = status + cname;
536                                 TreeServerList list;
537                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
538                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
539                                 {
540                                         TreeSocket* Sock = i->second->GetSocket();
541                                         if (Sock)
542                                                 Sock->WriteLine(":"+std::string(user->uuid)+" PRIVMSG "+cname+" :"+text);
543                                 }
544                         }
545                 }
546         }
547         else if (target_type == TYPE_SERVER)
548         {
549                 if (IS_LOCAL(user))
550                 {
551                         char* target = (char*)dest;
552                         std::deque<std::string> par;
553                         par.push_back(target);
554                         par.push_back(":"+text);
555                         Utils->DoOneToMany(user->uuid,"PRIVMSG",par);
556                 }
557         }
558 }
559
560 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
561 {
562         AutoConnectServers(curtime);
563         DoPingChecks(curtime);
564 }
565
566 void ModuleSpanningTree::OnUserJoin(User* user, Channel* channel, bool sync, bool &silent)
567 {
568         // Only do this for local users
569         if (IS_LOCAL(user))
570         {
571                 if (channel->GetUserCounter() == 1)
572                 {
573                         std::deque<std::string> params;
574                         // set up their permissions and the channel TS with FJOIN.
575                         // All users are FJOINed now, because a module may specify
576                         // new joining permissions for the user.
577                         params.push_back(channel->name);
578                         params.push_back(ConvToStr(channel->age));
579                         params.push_back(std::string(channel->GetAllPrefixChars(user))+","+std::string(user->uuid));
580                         Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
581                         /* First user in, sync the modes for the channel */
582                         params.pop_back();
583                         params.push_back(std::string("+") + channel->ChanModes(true));
584                         Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FMODE",params);
585                 }
586                 else
587                 {
588                         std::deque<std::string> params;
589                         params.push_back(channel->name);
590                         params.push_back(ConvToStr(channel->age));
591                         Utils->DoOneToMany(user->uuid,"JOIN",params);
592                 }
593         }
594 }
595
596 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
597 {
598         // only occurs for local clients
599         if (user->registered != REG_ALL)
600                 return;
601         std::deque<std::string> params;
602         params.push_back(newhost);
603         Utils->DoOneToMany(user->uuid,"FHOST",params);
604 }
605
606 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
607 {
608         // only occurs for local clients
609         if (user->registered != REG_ALL)
610                 return;
611         std::deque<std::string> params;
612         params.push_back(gecos);
613         Utils->DoOneToMany(user->uuid,"FNAME",params);
614 }
615
616 void ModuleSpanningTree::OnUserPart(User* user, Channel* channel, const std::string &partmessage, bool &silent)
617 {
618         if (IS_LOCAL(user))
619         {
620                 std::deque<std::string> params;
621                 params.push_back(channel->name);
622                 if (!partmessage.empty())
623                         params.push_back(":"+partmessage);
624                 Utils->DoOneToMany(user->uuid,"PART",params);
625         }
626 }
627
628 void ModuleSpanningTree::OnPostConnect(User* user)
629 {
630         if (IS_LOCAL(user))
631         {
632                 std::deque<std::string> params;
633                 params.push_back(user->uuid);
634                 params.push_back(ConvToStr(user->age));
635                 params.push_back(user->nick);
636                 params.push_back(user->host);
637                 params.push_back(user->dhost);
638                 params.push_back(user->ident);
639                 params.push_back("+"+std::string(user->FormatModes()));
640                 params.push_back(user->GetIPString());
641                 params.push_back(ConvToStr(user->signon));
642                 params.push_back(":"+std::string(user->fullname));
643                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
644         }
645
646         TreeServer* SourceServer = Utils->FindServer(user->server);
647         if (SourceServer)
648         {
649                 SourceServer->SetUserCount(1); // increment by 1
650         }
651 }
652
653 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
654 {
655         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
656         {
657                 std::deque<std::string> params;
658
659                 if (oper_message != reason)
660                 {
661                         params.push_back(":"+oper_message);
662                         Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
663                 }
664                 params.clear();
665                 params.push_back(":"+reason);
666                 Utils->DoOneToMany(user->uuid,"QUIT",params);
667         }
668
669         // Regardless, We need to modify the user Counts..
670         TreeServer* SourceServer = Utils->FindServer(user->server);
671         if (SourceServer)
672         {
673                 SourceServer->SetUserCount(-1); // decrement by 1
674         }
675 }
676
677 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
678 {
679         if (IS_LOCAL(user))
680         {
681                 std::deque<std::string> params;
682                 params.push_back(user->nick);
683
684                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
685                  */
686                 if (irc::string(user->nick) != assign(oldnick))
687                         user->age = ServerInstance->Time();
688
689                 params.push_back(ConvToStr(user->age));
690                 Utils->DoOneToMany(user->uuid,"NICK",params);
691         }
692 }
693
694 void ModuleSpanningTree::OnUserKick(User* source, User* user, Channel* chan, const std::string &reason, bool &silent)
695 {
696         if ((source) && (IS_LOCAL(source)))
697         {
698                 std::deque<std::string> params;
699                 params.push_back(chan->name);
700                 params.push_back(user->uuid);
701                 params.push_back(":"+reason);
702                 Utils->DoOneToMany(source->uuid,"KICK",params);
703         }
704         else if (!source)
705         {
706                 std::deque<std::string> params;
707                 params.push_back(chan->name);
708                 params.push_back(user->uuid);
709                 params.push_back(":"+reason);
710                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
711         }
712 }
713
714 void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
715 {
716         std::deque<std::string> params;
717         params.push_back(":"+reason);
718         Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
719         params.clear();
720         params.push_back(dest->uuid);
721         params.push_back(":"+reason);
722         dest->SetOperQuit(operreason);
723         Utils->DoOneToMany(source->uuid,"KILL",params);
724 }
725
726 void ModuleSpanningTree::OnRehash(User* user, const std::string &parameter)
727 {
728         if (!parameter.empty())
729         {
730                 std::deque<std::string> params;
731                 params.push_back(parameter);
732                 Utils->DoOneToMany(user ? user->nick : ServerInstance->Config->GetSID(), "REHASH", params);
733                 // check for self
734                 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
735                 {
736                         ServerInstance->SNO->WriteToSnoMask('A', "Remote rehash initiated locally by \002%s\002", user ? user->nick : ServerInstance->Config->ServerName);
737                         ServerInstance->RehashServer();
738                 }
739         }
740         Utils->ReadConfiguration(true);
741         InitializeDisabledCommands(ServerInstance->Config->DisabledCommands, ServerInstance);
742 }
743
744 // note: the protocol does not allow direct umode +o except
745 // via NICK with 8 params. sending OPERTYPE infers +o modechange
746 // locally.
747 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
748 {
749         if (IS_LOCAL(user))
750         {
751                 std::deque<std::string> params;
752                 params.push_back(opertype);
753                 Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
754         }
755 }
756
757 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
758 {
759         if (!x->IsBurstable())
760                 return;
761
762         char data[MAXBUF];
763         snprintf(data,MAXBUF,"%s %s %s %lu %lu :%s", x->type.c_str(), x->Displayable(), 
764         ServerInstance->Config->ServerName, (unsigned long)x->set_time, (unsigned long)x->duration, x->reason);
765         std::deque<std::string> params;
766         params.push_back(data);
767
768         if (!user)
769         {
770                 /* Server-set lines */
771                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
772         }
773         else if (IS_LOCAL(user))
774         {
775                 /* User-set lines */
776                 Utils->DoOneToMany(user->uuid, "ADDLINE", params);
777         }
778 }
779
780 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
781 {
782         if (x->type == "K")
783                 return;
784
785         char data[MAXBUF];
786         snprintf(data,MAXBUF,"%s %s", x->type.c_str(), x->Displayable());
787         std::deque<std::string> params;
788         params.push_back(data);
789
790         if (!user)
791         {
792                 /* Server-unset lines */
793                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
794         }
795         else if (IS_LOCAL(user))
796         {
797                 /* User-unset lines */
798                 Utils->DoOneToMany(user->uuid, "DELLINE", params);
799         }
800 }
801
802 void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const std::string &text)
803 {
804         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
805         {
806                 std::deque<std::string> params;
807                 std::string command;
808                 std::string output_text;
809
810                 ServerInstance->Parser->TranslateUIDs(TR_SPACENICKLIST, text, output_text);
811
812                 if (target_type == TYPE_USER)
813                 {
814                         User* u = (User*)dest;
815                         params.push_back(u->uuid);
816                         params.push_back(output_text);
817                         command = "MODE";
818                 }
819                 else
820                 {
821                         Channel* c = (Channel*)dest;
822                         params.push_back(c->name);
823                         params.push_back(ConvToStr(c->age));
824                         params.push_back(output_text);
825                         command = "FMODE";
826                 }
827
828                 Utils->DoOneToMany(user->uuid, command, params);
829         }
830 }
831
832 int ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
833 {
834         if (IS_LOCAL(user))
835         {
836                 if (awaymsg.empty())
837                 {
838                         std::deque<std::string> params;
839                         params.clear();
840                         Utils->DoOneToMany(user->uuid,"AWAY",params);
841                 }
842                 else
843                 {
844                         std::deque<std::string> params;
845                         params.push_back(":" + awaymsg);
846                         Utils->DoOneToMany(user->uuid,"AWAY",params);
847                 }
848         }
849
850         return 0;
851 }
852
853 void ModuleSpanningTree::ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
854 {
855         TreeSocket* s = (TreeSocket*)opaque;
856         std::string output_text;
857
858         ServerInstance->Parser->TranslateUIDs(TR_SPACENICKLIST, modeline, output_text);
859
860         if (target)
861         {
862                 if (target_type == TYPE_USER)
863                 {
864                         User* u = (User*)target;
865                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" FMODE "+u->uuid+" "+ConvToStr(u->age)+" "+output_text);
866                 }
867                 else
868                 {
869                         Channel* c = (Channel*)target;
870                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
871                 }
872         }
873 }
874
875 void ModuleSpanningTree::ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
876 {
877         TreeSocket* s = (TreeSocket*)opaque;
878         if (target)
879         {
880                 if (target_type == TYPE_USER)
881                 {
882                         User* u = (User*)target;
883                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
884                 }
885                 else if (target_type == TYPE_CHANNEL)
886                 {
887                         Channel* c = (Channel*)target;
888                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+extname+" :"+extdata);
889                 }
890         }
891         if (target_type == TYPE_OTHER)
892         {
893                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
894         }
895 }
896
897 void ModuleSpanningTree::OnEvent(Event* event)
898 {
899         if ((event->GetEventID() == "send_encap") || (event->GetEventID() == "send_metadata") || (event->GetEventID() == "send_topic") || (event->GetEventID() == "send_mode") || (event->GetEventID() == "send_mode_explicit") || (event->GetEventID() == "send_opers")
900                 || (event->GetEventID() == "send_modeset") || (event->GetEventID() == "send_snoset") || (event->GetEventID() == "send_push"))
901         {
902                 ServerInstance->Logs->Log("m_spanningtree", DEBUG, "WARNING: Deprecated use of old 1.1 style m_spanningtree event ignored, type '"+event->GetEventID()+"'!");
903         }
904 }
905
906 ModuleSpanningTree::~ModuleSpanningTree()
907 {
908         /* This will also free the listeners */
909         delete ServerInstance->PI;
910         ServerInstance->PI = new ProtocolInterface(ServerInstance);
911
912         delete Utils;
913
914         ServerInstance->Timers->DelTimer(RefreshTimer);
915
916         ServerInstance->Modules->DoneWithInterface("BufferedSocketHook");
917 }
918
919 Version ModuleSpanningTree::GetVersion()
920 {
921         return Version(1,2,0,2,VF_VENDOR,API_VERSION);
922 }
923
924 /* It is IMPORTANT that m_spanningtree is the last module in the chain
925  * so that any activity it sees is FINAL, e.g. we arent going to send out
926  * a NICK message before m_cloaking has finished putting the +x on the user,
927  * etc etc.
928  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
929  * the module call queue.
930  */
931 void ModuleSpanningTree::Prioritize()
932 {
933         ServerInstance->Modules->SetPriority(this, PRIO_LAST);
934 }
935
936 MODULE_INIT(ModuleSpanningTree)