1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
15 #include "configreader.h"
19 #include "commands/cmd_whois.h"
20 #include "commands/cmd_stats.h"
24 #include "transport.h"
25 #include "socketengine.h"
27 #include "m_spanningtree/main.h"
28 #include "m_spanningtree/utils.h"
29 #include "m_spanningtree/treeserver.h"
30 #include "m_spanningtree/link.h"
31 #include "m_spanningtree/treesocket.h"
32 #include "m_spanningtree/resolvers.h"
33 #include "m_spanningtree/handshaketimer.h"
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 */
37 static std::map<std::string, std::string> warned; /* Server names that have had protocol violation warnings displayed for them */
39 int TreeSocket::WriteLine(std::string line)
41 Instance->Log(DEBUG, "S[%d] -> %s", this->GetFd(), line.c_str());
43 return this->Write(line);
47 /* Handle ERROR command */
48 bool TreeSocket::Error(std::deque<std::string> ¶ms)
50 if (params.size() < 1)
52 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(!InboundServerName.empty() ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
53 /* we will return false to cause the socket to close. */
57 bool TreeSocket::Modules(const std::string &prefix, std::deque<std::string> ¶ms)
62 if (!this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
64 /* Pass it on, not for us */
65 Utils->DoOneToOne(prefix, "MODULES", params, params[0]);
70 std::deque<std::string> par;
71 par.push_back(prefix);
74 userrec* source = this->Instance->FindNick(prefix);
78 for (unsigned int i = 0; i < Instance->Config->module_names.size(); i++)
80 Version V = Instance->modules[i]->GetVersion();
81 char modulename[MAXBUF];
82 char flagstate[MAXBUF];
84 if (V.Flags & VF_STATIC)
85 strlcat(flagstate,", static",MAXBUF);
86 if (V.Flags & VF_VENDOR)
87 strlcat(flagstate,", vendor",MAXBUF);
88 if (V.Flags & VF_COMMON)
89 strlcat(flagstate,", common",MAXBUF);
90 if (V.Flags & VF_SERVICEPROVIDER)
91 strlcat(flagstate,", service provider",MAXBUF);
93 strcpy(flagstate," <no flags>");
94 strlcpy(modulename,Instance->Config->module_names[i].c_str(),256);
97 snprintf(strbuf, MAXBUF, "::%s 900 %s :0x%08lx %d.%d.%d.%d %s (%s)",Instance->Config->ServerName,source->nick,(long unsigned int)Instance->modules[i],V.Major,V.Minor,V.Revision,V.Build,ServerConfig::CleanFilename(modulename),flagstate+2);
101 snprintf(strbuf, MAXBUF, "::%s 900 %s :%s",Instance->Config->ServerName,source->nick,ServerConfig::CleanFilename(modulename));
104 Utils->DoOneToOne(Instance->Config->ServerName, "PUSH", par, source->server);
106 snprintf(strbuf, MAXBUF, "::%s 901 %s :End of MODULES list", Instance->Config->ServerName, source->nick);
108 Utils->DoOneToOne(Instance->Config->ServerName, "PUSH", par, source->server);
112 /** remote MOTD. leet, huh? */
113 bool TreeSocket::Motd(const std::string &prefix, std::deque<std::string> ¶ms)
115 if (params.size() > 0)
117 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
119 /* It's for our server */
121 userrec* source = this->Instance->FindNick(prefix);
125 std::deque<std::string> par;
126 par.push_back(prefix);
129 if (!Instance->Config->MOTD.size())
131 par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
132 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
136 par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
137 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
139 for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
141 par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
142 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
145 par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
146 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
152 userrec* source = this->Instance->FindNick(prefix);
154 Utils->DoOneToOne(prefix, "MOTD", params, params[0]);
160 /** remote ADMIN. leet, huh? */
161 bool TreeSocket::Admin(const std::string &prefix, std::deque<std::string> ¶ms)
163 if (params.size() > 0)
165 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
167 /* It's for our server */
169 userrec* source = this->Instance->FindNick(prefix);
172 std::deque<std::string> par;
173 par.push_back(prefix);
175 par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
176 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
177 par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName;
178 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
179 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
180 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
181 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail;
182 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
188 userrec* source = this->Instance->FindNick(prefix);
190 Utils->DoOneToOne(prefix, "ADMIN", params, params[0]);
196 bool TreeSocket::Stats(const std::string &prefix, std::deque<std::string> ¶ms)
198 /* Get the reply to a STATS query if it matches this servername,
199 * and send it back as a load of PUSH queries
201 if (params.size() > 1)
203 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
205 /* It's for our server */
207 userrec* source = this->Instance->FindNick(prefix);
210 std::deque<std::string> par;
211 par.push_back(prefix);
213 DoStats(this->Instance, *(params[0].c_str()), source, results);
214 for (size_t i = 0; i < results.size(); i++)
216 par[1] = "::" + results[i];
217 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
224 userrec* source = this->Instance->FindNick(prefix);
226 Utils->DoOneToOne(prefix, "STATS", params, params[1]);
233 /** Because the core won't let users or even SERVERS set +o,
234 * we use the OPERTYPE command to do this.
236 bool TreeSocket::OperType(const std::string &prefix, std::deque<std::string> ¶ms)
238 if (params.size() != 1)
240 std::string opertype = params[0];
241 userrec* u = this->Instance->FindNick(prefix);
244 u->modes[UM_OPERATOR] = 1;
245 this->Instance->all_opers.push_back(u);
246 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
247 Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
248 this->Instance->SNO->WriteToSnoMask('o',"From %s: User %s (%s@%s) is now an IRC operator of type %s",u->server, u->nick,u->ident,u->host,irc::Spacify(opertype.c_str()));
253 /** Because Andy insists that services-compatible servers must
254 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
256 bool TreeSocket::ForceNick(const std::string &prefix, std::deque<std::string> ¶ms)
258 if (params.size() < 3)
261 userrec* u = this->Instance->FindNick(params[0]);
265 Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
268 std::deque<std::string> par;
269 par.push_back(params[1]);
270 if (!u->ForceNickChange(params[1].c_str()))
272 userrec::QuitUser(this->Instance, u, "Nickname collision");
275 u->age = atoi(params[2].c_str());
281 bool TreeSocket::OperQuit(const std::string &prefix, std::deque<std::string> ¶ms)
283 if (params.size() < 1)
286 userrec* u = this->Instance->FindNick(prefix);
290 u->SetOperQuit(params[0]);
291 params[0] = ":" + params[0];
292 Utils->DoOneToAllButSender(prefix,"OPERQUIT",params,prefix);
297 /* to be removed after 1.1.9 */
299 * Remote SQUIT (RSQUIT). Routing works similar to SVSNICK: Route it to the server that the target is connected to locally,
300 * then let that server do the dirty work (squit it!). Example:
301 * A -> B -> C -> D: oper on A squits D, A routes to B, B routes to C, C notices D connected locally, kills it. -- w00t
303 bool TreeSocket::RemoteSquit(const std::string &prefix, std::deque<std::string> ¶ms)
305 /* ok.. :w00t RSQUIT jupe.barafranca.com :reason here */
306 if (params.size() < 2)
309 TreeServer* s = Utils->FindServerMask(params[0]);
313 if (s == Utils->TreeRoot)
315 this->Instance->SNO->WriteToSnoMask('l',"What the fuck, I recieved a remote SQUIT for myself? :< (from %s", prefix.c_str());
319 TreeSocket* sock = s->GetSocket();
323 /* it's locally connected, KILL IT! */
324 Instance->SNO->WriteToSnoMask('l',"RSQUIT: Server \002%s\002 removed from network by %s: %s", params[0].c_str(), prefix.c_str(), params[1].c_str());
325 sock->Squit(s,"Server quit by " + prefix + ": " + params[1]);
326 Instance->SE->DelFd(sock);
332 /* route the rsquit */
333 params[1] = ":" + params[1];
334 Utils->DoOneToOne(prefix, "RSQUIT2", params, params[0]);
339 /* mother fucker! it doesn't exist */
344 /* end to be removed after 1.1.9 */
346 bool TreeSocket::ServiceJoin(const std::string &prefix, std::deque<std::string> ¶ms)
348 if (params.size() < 2)
351 userrec* u = this->Instance->FindNick(params[0]);
355 /* only join if it's local, otherwise just pass it on! */
357 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false, "", Instance->Time());
358 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
363 bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque<std::string> ¶ms)
365 if (params.size() < 1)
368 std::string servermask = params[0];
370 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
372 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
373 this->Instance->RehashServer();
374 Utils->ReadConfiguration(false);
375 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
377 Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
381 bool TreeSocket::RemoteKill(const std::string &prefix, std::deque<std::string> ¶ms)
383 if (params.size() != 2)
386 userrec* who = this->Instance->FindNick(params[0]);
390 /* Prepend kill source, if we don't have one */
391 if (*(params[1].c_str()) != '[')
393 params[1] = "[" + prefix + "] Killed (" + params[1] +")";
395 std::string reason = params[1];
396 params[1] = ":" + params[1];
397 Utils->DoOneToAllButSender(prefix,"KILL",params,prefix);
398 who->Write(":%s KILL %s :%s (%s)", prefix.c_str(), who->nick, prefix.c_str(), reason.c_str());
399 userrec::QuitUser(this->Instance,who,reason);
404 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
406 if (params.size() < 1)
409 if (params.size() == 1)
411 TreeServer* ServerSource = Utils->FindServer(prefix);
414 ServerSource->SetPingFlag();
415 ServerSource->rtt = Instance->Time() - ServerSource->LastPing;
420 std::string forwardto = params[1];
421 if (forwardto == this->Instance->Config->ServerName)
424 * this is a PONG for us
425 * if the prefix is a user, check theyre local, and if they are,
426 * dump the PONG reply back to their fd. If its a server, do nowt.
427 * Services might want to send these s->s, but we dont need to yet.
429 userrec* u = this->Instance->FindNick(prefix);
432 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
437 // not for us, pass it on :)
438 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
445 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
447 if (params.size() < 2)
449 else if (params.size() < 3)
450 params.push_back("");
451 TreeServer* ServerSource = Utils->FindServer(prefix);
454 Utils->SetRemoteBursting(ServerSource, false);
456 if (params[0] == "*")
458 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
460 else if (*(params[0].c_str()) == '#')
462 chanrec* c = this->Instance->FindChan(params[0]);
465 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
468 else if (*(params[0].c_str()) != '#')
470 userrec* u = this->Instance->FindNick(params[0]);
473 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
478 params[2] = ":" + params[2];
479 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
483 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
485 if (params.size() < 1)
488 TreeServer* ServerSource = Utils->FindServer(prefix);
492 ServerSource->SetVersion(params[0]);
494 params[0] = ":" + params[0];
495 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
499 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
501 if (params.size() < 1)
503 userrec* u = this->Instance->FindNick(prefix);
507 u->ChangeDisplayedHost(params[0].c_str());
508 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
513 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
515 if (params.size() < 6)
517 bool propogate = false;
519 Utils->lines_to_apply = 0;
520 switch (*(params[0].c_str()))
523 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
524 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
526 Utils->lines_to_apply |= APPLY_ZLINES;
529 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
530 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
532 Utils->lines_to_apply |= APPLY_QLINES;
535 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
536 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
539 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
540 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
542 Utils->lines_to_apply |= APPLY_GLINES;
545 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
547 Utils->lines_to_apply |= APPLY_KLINES;
550 /* Just in case... */
551 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
555 /* Send it on its way */
558 if (atoi(params[4].c_str()))
560 time_t c_requires_crap = ConvToInt(params[4]) + Instance->Time();
561 this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),Instance->TimeString(c_requires_crap).c_str(),params[5].c_str());
565 this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
567 params[5] = ":" + params[5];
568 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
572 Instance->XLines->apply_lines(Utils->lines_to_apply);
573 Utils->lines_to_apply = 0;
578 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
580 if (params.size() < 1)
582 userrec* u = this->Instance->FindNick(prefix);
585 u->ChangeName(params[0].c_str());
586 params[0] = ":" + params[0];
587 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
592 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> ¶ms)
594 if (params.size() < 1)
596 userrec* u = this->Instance->FindNick(prefix);
599 // an incoming request
600 if (params.size() == 1)
602 userrec* x = this->Instance->FindNick(params[0]);
603 if ((x) && (IS_LOCAL(x)))
605 userrec* x = this->Instance->FindNick(params[0]);
608 snprintf(signon, MAXBUF, "%lu", (unsigned long)x->signon);
609 snprintf(idle, MAXBUF, "%lu", (unsigned long)abs((x->idle_lastmsg) - Instance->Time(true)));
610 std::deque<std::string> par;
611 par.push_back(prefix);
612 par.push_back(signon);
614 // ours, we're done, pass it BACK
615 Utils->DoOneToOne(params[0], "IDLE", par, u->server);
619 // not ours pass it on
621 Utils->DoOneToOne(prefix, "IDLE", params, x->server);
624 else if (params.size() == 3)
626 std::string who_did_the_whois = params[0];
627 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
628 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
630 // an incoming reply to a whois we sent out
631 std::string nick_whoised = prefix;
632 unsigned long signon = atoi(params[1].c_str());
633 unsigned long idle = atoi(params[2].c_str());
634 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
636 do_whois(this->Instance, who_to_send_to, u, signon, idle, nick_whoised.c_str());
641 // not ours, pass it on
643 Utils->DoOneToOne(prefix, "IDLE", params, who_to_send_to->server);
650 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> ¶ms)
652 if (params.size() < 2)
654 userrec* u = this->Instance->FindNick(params[0]);
663 // continue the raw onwards
664 params[1] = ":" + params[1];
665 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
670 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
672 if (!params.size() || !Utils->EnableTimeSync)
677 if ((params.size() == 2) && (params[1] == "FORCE"))
680 time_t them = atoi(params[0].c_str());
681 time_t us = Instance->Time(false);
683 time_t diff = them - us;
685 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
687 if (force || (them != us))
689 time_t old = Instance->SetTimeDelta(diff);
690 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
696 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> ¶ms)
698 // :source.server TIME remote.server sendernick
699 // :remote.server TIME source.server sendernick TS
700 if (params.size() == 2)
702 // someone querying our time?
703 if (this->Instance->Config->ServerName == params[0])
705 userrec* u = this->Instance->FindNick(params[1]);
708 params.push_back(ConvToStr(Instance->Time(false)));
710 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
715 // not us, pass it on
716 userrec* u = this->Instance->FindNick(params[1]);
718 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
721 else if (params.size() == 3)
723 // a response to a previous TIME
724 userrec* u = this->Instance->FindNick(params[1]);
725 if ((u) && (IS_LOCAL(u)))
727 time_t rawtime = atol(params[2].c_str());
728 struct tm * timeinfo;
729 timeinfo = localtime(&rawtime);
731 snprintf(tms,26,"%s",asctime(timeinfo));
733 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
738 Utils->DoOneToOne(prefix,"TIME",params,u->server);
744 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
746 if (params.size() < 1)
748 if (params.size() == 1)
750 std::string stufftobounce = params[0];
751 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
756 std::string forwardto = params[1];
757 if (forwardto == this->Instance->Config->ServerName)
759 // this is a ping for us, send back PONG to the requesting server
760 params[1] = params[0];
761 params[0] = forwardto;
762 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
766 // not for us, pass it on :)
767 Utils->DoOneToOne(prefix,"PING",params,forwardto);
773 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
775 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
777 if (params.size() < 1)
779 chanrec* c = Instance->FindChan(params[0]);
782 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
784 ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
792 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
794 if (params.size() < 4)
796 std::string servername = params[0];
797 std::string password = params[1];
798 // hopcount is not used for a remote server, we calculate this ourselves
799 std::string description = params[3];
800 TreeServer* ParentOfThis = Utils->FindServer(prefix);
803 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
806 TreeServer* CheckDupe = Utils->FindServer(servername);
809 this->SendError("Server "+servername+" already exists!");
810 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix);
813 Link* lnk = Utils->FindLink(servername);
814 TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL, lnk ? lnk->Hidden : false);
815 ParentOfThis->AddChild(Node);
816 params[3] = ":" + params[3];
817 Utils->SetRemoteBursting(Node, true);
818 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
819 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
823 bool TreeSocket::ComparePass(const std::string &ours, const std::string &theirs)
825 if ((!strncmp(ours.c_str(), "HMAC-SHA256:", 12)) || (!strncmp(theirs.c_str(), "HMAC-SHA256:", 12)))
827 /* One or both of us specified hmac sha256, but we don't have sha256 module loaded!
828 * We can't allow this password as valid.
830 if (!Instance->FindModule("m_sha256.so") || !Utils->ChallengeResponse)
833 /* Straight string compare of hashes */
834 return ours == theirs;
837 /* Straight string compare of plaintext */
838 return ours == theirs;
841 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> ¶ms)
843 if (params.size() < 4)
846 irc::string servername = params[0].c_str();
847 std::string sname = params[0];
848 std::string password = params[1];
849 std::string description = params[3];
850 int hops = atoi(params[2].c_str());
852 this->InboundServerName = sname;
853 this->InboundDescription = description;
857 this->SendError("Server too far away for authentication");
858 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
862 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
864 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty()))))
866 TreeServer* CheckDupe = Utils->FindServer(sname);
869 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
870 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
873 // Begin the sync here. this kickstarts the
874 // other side, waiting in WAIT_AUTH_2 state,
875 // into starting their burst, as it shows
877 this->LinkState = CONNECTED;
878 // we should add the details of this server now
879 // to the servers tree, as a child of the root
881 TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this,x->Hidden);
882 Utils->TreeRoot->AddChild(Node);
883 params[3] = ":" + params[3];
884 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
885 this->bursting = true;
890 this->SendError("Invalid credentials");
891 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
895 bool TreeSocket::Inbound_Server(std::deque<std::string> ¶ms)
897 if (params.size() < 4)
899 irc::string servername = params[0].c_str();
900 std::string sname = params[0];
901 std::string password = params[1];
902 std::string description = params[3];
903 int hops = atoi(params[2].c_str());
905 this->InboundServerName = sname;
906 this->InboundDescription = description;
910 this->SendError("Server too far away for authentication");
911 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
915 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
917 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty()))))
919 /* First check for instances of the server that are waiting between the inbound and outbound SERVER command */
920 TreeSocket* CheckDupeSocket = Utils->FindBurstingServer(sname);
923 /* If we find one, we abort the link to prevent a race condition */
924 this->SendError("Negotiation collision");
925 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists in a negotiating state.");
926 CheckDupeSocket->SendError("Negotiation collision");
927 Instance->SE->DelFd(CheckDupeSocket);
928 CheckDupeSocket->Close();
929 delete CheckDupeSocket;
932 /* Now check for fully initialized instances of the server */
933 TreeServer* CheckDupe = Utils->FindServer(sname);
936 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
937 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
940 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
943 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
944 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
947 Utils->AddBurstingServer(sname,this);
949 // this is good. Send our details: Our server name and description and hopcount of 0,
950 // along with the sendpass from this block.
951 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 :"+this->Instance->Config->ServerDesc);
952 // move to the next state, we are now waiting for THEM.
953 this->LinkState = WAIT_AUTH_2;
957 this->SendError("Invalid credentials");
958 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
962 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
965 irc::tokenstream tokens(line);
967 while (tokens.GetToken(param))
975 bool TreeSocket::ProcessLine(std::string &line)
977 std::deque<std::string> params;
981 line = line.substr(0, line.find_first_of("\r\n"));
986 Instance->Log(DEBUG, "S[%d] <- %s", this->GetFd(), line.c_str());
988 this->Split(line.c_str(),params);
993 if ((params[0][0] == ':') && (params.size() > 1))
995 prefix = params[0].substr(1);
998 command = params[0].c_str();
1000 switch (this->LinkState)
1005 // Waiting for SERVER command from remote server. Server initiating
1006 // the connection sends the first SERVER command, listening server
1007 // replies with theirs if its happy, then if the initiator is happy,
1008 // it starts to send its net sync, which starts the merge, otherwise
1009 // it sends an ERROR.
1010 if (command == "PASS")
1012 /* Silently ignored */
1014 else if (command == "SERVER")
1016 return this->Inbound_Server(params);
1018 else if (command == "ERROR")
1020 return this->Error(params);
1022 else if (command == "USER")
1024 this->SendError("Client connections to this port are prohibited.");
1027 else if (command == "CAPAB")
1029 return this->Capab(params);
1031 else if ((command == "U") || (command == "S"))
1033 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1038 irc::string error = "Invalid command in negotiation phase: " + command;
1039 this->SendError(assign(error));
1044 // Waiting for start of other side's netmerge to say they liked our
1046 if (command == "SERVER")
1048 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1052 else if ((command == "U") || (command == "S"))
1054 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1057 else if (command == "BURST")
1059 if (params.size() && Utils->EnableTimeSync)
1061 bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
1062 time_t them = atoi(params[0].c_str());
1063 time_t delta = them - Instance->Time(false);
1064 if ((delta < -300) || (delta > 300))
1066 Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than five minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
1067 SendError("Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than five minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1070 else if ((delta < -30) || (delta > 30))
1072 Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs(delta));
1075 if (!Utils->MasterTime && !we_have_delta)
1077 this->Instance->SetTimeDelta(delta);
1078 // Send this new timestamp to any other servers
1079 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
1082 this->LinkState = CONNECTED;
1083 Link* lnk = Utils->FindLink(InboundServerName);
1084 Node = new TreeServer(this->Utils,this->Instance, InboundServerName, InboundDescription, Utils->TreeRoot, this, lnk ? lnk->Hidden : false);
1085 Utils->DelBurstingServer(this);
1086 Utils->TreeRoot->AddChild(Node);
1088 params.push_back(InboundServerName);
1089 params.push_back("*");
1090 params.push_back("1");
1091 params.push_back(":"+InboundDescription);
1092 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1093 this->bursting = true;
1094 this->DoBurst(Node);
1096 else if (command == "ERROR")
1098 return this->Error(params);
1100 else if (command == "CAPAB")
1102 return this->Capab(params);
1107 this->SendError("Internal error -- listening socket accepted its own descriptor!!!");
1111 if (command == "SERVER")
1113 // another server we connected to, which was in WAIT_AUTH_1 state,
1114 // has just sent us their credentials. If we get this far, theyre
1115 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1116 // if we're happy with this, we should send our netburst which
1117 // kickstarts the merge.
1118 return this->Outbound_Reply_Server(params);
1120 else if (command == "ERROR")
1122 return this->Error(params);
1124 else if (command == "CAPAB")
1126 return this->Capab(params);
1130 // This is the 'authenticated' state, when all passwords
1131 // have been exchanged and anything past this point is taken
1134 if (!prefix.empty())
1136 std::string direction = prefix;
1137 userrec* t = this->Instance->FindNick(prefix);
1140 direction = t->server;
1142 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1143 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1145 if (route_back_again)
1146 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1150 * When there is activity on the socket, reset the ping counter so
1151 * that we're not wasting bandwidth pinging an active server.
1153 route_back_again->SetNextPingTime(time(NULL) + 60);
1154 route_back_again->SetPingFlag();
1158 prefix = this->GetName();
1161 if ((command == "MODE") && (params.size() >= 2))
1163 chanrec* channel = Instance->FindChan(params[0]);
1166 userrec* x = Instance->FindNick(prefix);
1169 if (warned.find(x->server) == warned.end())
1171 Instance->Log(DEFAULT,"WARNING: I revceived modes '%s' from another server '%s'. This is not compliant with InspIRCd. Please check that server for bugs.", params[1].c_str(), x->server);
1172 Instance->SNO->WriteToSnoMask('d', "WARNING: The server %s is sending nonstandard modes: '%s MODE %s' where FMODE should be used, and may cause desyncs.", x->server, x->nick, params[1].c_str());
1173 warned[x->server] = x->nick;
1179 if (command == "SVSMODE")
1181 /* Services expects us to implement
1182 * SVSMODE. In inspircd its the same as
1188 /* Yes, know, this is a mess. Its reasonably fast though as we're
1189 * working with std::string here.
1191 if ((command == "NICK") && (params.size() >= 8))
1193 return this->IntroduceClient(prefix,params);
1195 else if (command == "FJOIN")
1197 TreeServer* ServerSource = Utils->FindServer(prefix);
1199 Utils->SetRemoteBursting(ServerSource, false);
1200 return this->ForceJoin(prefix,params);
1202 else if (command == "STATS")
1204 return this->Stats(prefix, params);
1206 else if (command == "MOTD")
1208 return this->Motd(prefix, params);
1210 else if (command == "KILL" && Utils->IsServer(prefix))
1212 return this->RemoteKill(prefix,params);
1214 else if (command == "MODULES")
1216 return this->Modules(prefix, params);
1218 else if (command == "ADMIN")
1220 return this->Admin(prefix, params);
1222 else if (command == "SERVER")
1224 return this->RemoteServer(prefix,params);
1226 else if (command == "ERROR")
1228 return this->Error(params);
1230 else if (command == "OPERTYPE")
1232 return this->OperType(prefix,params);
1234 else if (command == "FMODE")
1236 TreeServer* ServerSource = Utils->FindServer(prefix);
1238 Utils->SetRemoteBursting(ServerSource, false);
1239 return this->ForceMode(prefix,params);
1241 else if (command == "FTOPIC")
1243 return this->ForceTopic(prefix,params);
1245 else if (command == "REHASH")
1247 return this->RemoteRehash(prefix,params);
1249 else if (command == "METADATA")
1251 return this->MetaData(prefix,params);
1253 else if (command == "REMSTATUS")
1255 return this->RemoveStatus(prefix,params);
1257 else if (command == "PING")
1260 prefix = this->GetName();
1262 * We just got a ping from a server that's bursting.
1263 * This can't be right, so set them to not bursting, and
1264 * apply their lines.
1266 TreeServer* ServerSource = Utils->FindServer(prefix);
1268 Utils->SetRemoteBursting(ServerSource, false);
1272 this->bursting = false;
1273 Instance->XLines->apply_lines(Utils->lines_to_apply);
1274 Utils->lines_to_apply = 0;
1277 return this->LocalPing(prefix,params);
1279 else if (command == "PONG")
1282 prefix = this->GetName();
1284 * We just got a pong from a server that's bursting.
1285 * This can't be right, so set them to not bursting, and
1286 * apply their lines.
1288 TreeServer* ServerSource = Utils->FindServer(prefix);
1290 Utils->SetRemoteBursting(ServerSource, false);
1294 this->bursting = false;
1295 Instance->XLines->apply_lines(Utils->lines_to_apply);
1296 Utils->lines_to_apply = 0;
1299 return this->LocalPong(prefix,params);
1301 else if (command == "VERSION")
1303 return this->ServerVersion(prefix,params);
1305 else if (command == "FHOST")
1307 return this->ChangeHost(prefix,params);
1309 else if (command == "FNAME")
1311 return this->ChangeName(prefix,params);
1313 else if (command == "ADDLINE")
1315 TreeServer* ServerSource = Utils->FindServer(prefix);
1317 Utils->SetRemoteBursting(ServerSource, false);
1318 return this->AddLine(prefix,params);
1320 else if (command == "SVSNICK")
1324 prefix = this->GetName();
1326 return this->ForceNick(prefix,params);
1328 else if (command == "OPERQUIT")
1330 return this->OperQuit(prefix,params);
1332 /* to be removed after 1.1.9 */
1333 else if (command == "RSQUIT2")
1335 return this->RemoteSquit(prefix, params);
1337 /* end to be removed after 1.1.9 */
1338 else if (command == "IDLE")
1340 return this->Whois(prefix,params);
1342 else if (command == "PUSH")
1344 return this->Push(prefix,params);
1346 else if (command == "TIMESET")
1348 return this->HandleSetTime(prefix, params);
1350 else if (command == "TIME")
1352 return this->Time(prefix,params);
1354 else if ((command == "KICK") && (Utils->IsServer(prefix)))
1356 std::string sourceserv = this->myhost;
1357 if (params.size() == 3)
1359 userrec* user = this->Instance->FindNick(params[1]);
1360 chanrec* chan = this->Instance->FindChan(params[0]);
1363 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1364 /* Yikes, the channels gone! */
1368 if (!this->InboundServerName.empty())
1370 sourceserv = this->InboundServerName;
1372 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1374 else if (command == "SVSJOIN")
1378 prefix = this->GetName();
1380 return this->ServiceJoin(prefix,params);
1382 else if (command == "SQUIT")
1384 if (params.size() == 2)
1386 this->Squit(Utils->FindServer(params[0]),params[1]);
1390 else if (command == "OPERNOTICE")
1392 std::string sourceserv = this->myhost;
1393 if (!this->InboundServerName.empty())
1394 sourceserv = this->InboundServerName;
1395 if (params.size() >= 1)
1396 Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1397 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1399 else if (command == "MODENOTICE")
1401 std::string sourceserv = this->myhost;
1402 if (!this->InboundServerName.empty())
1403 sourceserv = this->InboundServerName;
1404 if (params.size() >= 2)
1406 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1408 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1410 else if (command == "SNONOTICE")
1412 std::string sourceserv = this->myhost;
1413 if (!this->InboundServerName.empty())
1414 sourceserv = this->InboundServerName;
1415 if (params.size() >= 2)
1417 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1419 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1421 else if (command == "ENDBURST")
1423 this->bursting = false;
1424 Instance->XLines->apply_lines(Utils->lines_to_apply);
1425 Utils->lines_to_apply = 0;
1426 std::string sourceserv = this->myhost;
1427 if (!this->InboundServerName.empty())
1428 sourceserv = this->InboundServerName;
1429 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1431 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1432 rmode.Send(Instance);
1438 // not a special inter-server command.
1439 // Emulate the actual user doing the command,
1440 // this saves us having a huge ugly parser.
1441 userrec* who = this->Instance->FindNick(prefix);
1442 std::string sourceserv = this->myhost;
1443 if (!this->InboundServerName.empty())
1445 sourceserv = this->InboundServerName;
1447 if ((!who) && (command == "MODE"))
1449 if (Utils->IsServer(prefix))
1451 const char* modelist[127];
1452 for (size_t i = 0; i < params.size(); i++)
1453 modelist[i] = params[i].c_str();
1454 userrec* fake = new userrec(Instance);
1455 fake->SetFd(FD_MAGIC_NUMBER);
1456 this->Instance->SendMode(modelist, params.size(), fake);
1459 /* Hot potato! pass it on! */
1460 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1465 if ((command == "NICK") && (params.size() > 0))
1467 /* On nick messages, check that the nick doesnt
1468 * already exist here. If it does, kill their copy,
1471 userrec* x = this->Instance->FindNick(params[0]);
1472 if ((x) && (x != who))
1474 std::deque<std::string> p;
1475 p.push_back(params[0]);
1476 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
1477 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1479 p.push_back(prefix);
1480 p.push_back("Nickname collision");
1481 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1482 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1483 userrec* y = this->Instance->FindNick(prefix);
1486 userrec::QuitUser(this->Instance,y,"Nickname collision");
1488 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1492 target = who->server;
1493 const char* strparams[127];
1494 for (unsigned int q = 0; q < params.size(); q++)
1496 strparams[q] = params[q].c_str();
1498 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1501 this->SendError("Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1508 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1514 // its not a user. Its either a server, or somethings screwed up.
1515 if (Utils->IsServer(prefix))
1516 target = this->Instance->Config->ServerName;
1520 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1529 std::string TreeSocket::GetName()
1531 std::string sourceserv = this->myhost;
1532 if (!this->InboundServerName.empty())
1534 sourceserv = this->InboundServerName;
1539 void TreeSocket::OnTimeout()
1541 if (this->LinkState == CONNECTING)
1543 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
1544 Link* MyLink = Utils->FindLink(myhost);
1546 Utils->DoFailOver(MyLink);
1550 void TreeSocket::OnClose()
1552 // Connection closed.
1553 // If the connection is fully up (state CONNECTED)
1554 // then propogate a netsplit to all peers.
1555 std::string quitserver = this->myhost;
1556 if (!this->InboundServerName.empty())
1558 quitserver = this->InboundServerName;
1560 TreeServer* s = Utils->FindServer(quitserver);
1563 Squit(s,"Remote host closed the connection");
1566 if (!quitserver.empty())
1568 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
1569 time_t server_uptime = Instance->Time() - this->age;
1571 Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' was established for %s", quitserver.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str());
1575 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1577 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1578 * or discovering if this port is the server port, we don't allow connections from any
1579 * IPs for which we don't have a link block.
1583 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1586 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1587 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1592 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
1598 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1599 s = s; /* Whinge whinge whinge, thats all GCC ever does. */