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);
249 TreeServer* remoteserver=Utils->FindServer(u->server);
252 if (this->Utils->quiet_bursts)
255 * If quiet bursts are enabled, and server is bursting or silent uline (i.e. services),
256 * then do nothing. -- w00t
260 Utils->FindRemoteBurstServer(remoteserver) ||
261 this->Instance->SilentULine(this->Instance->FindServerNamePtr(u->server))
269 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()));
274 /** Because Andy insists that services-compatible servers must
275 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
277 bool TreeSocket::ForceNick(const std::string &prefix, std::deque<std::string> ¶ms)
279 if (params.size() < 3)
282 userrec* u = this->Instance->FindNick(params[0]);
286 Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
289 std::deque<std::string> par;
290 par.push_back(params[1]);
291 if (!u->ForceNickChange(params[1].c_str()))
293 userrec::QuitUser(this->Instance, u, "Nickname collision");
296 u->age = atoi(params[2].c_str());
302 bool TreeSocket::OperQuit(const std::string &prefix, std::deque<std::string> ¶ms)
304 if (params.size() < 1)
307 userrec* u = this->Instance->FindNick(prefix);
311 u->SetOperQuit(params[0]);
312 params[0] = ":" + params[0];
313 Utils->DoOneToAllButSender(prefix,"OPERQUIT",params,prefix);
318 bool TreeSocket::ServiceJoin(const std::string &prefix, std::deque<std::string> ¶ms)
320 if (params.size() < 2)
323 userrec* u = this->Instance->FindNick(params[0]);
327 /* only join if it's local, otherwise just pass it on! */
329 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false, "", Instance->Time());
330 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
335 bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque<std::string> ¶ms)
337 if (params.size() < 1)
340 std::string servermask = params[0];
342 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
344 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
345 this->Instance->RehashServer();
346 Utils->ReadConfiguration(false);
347 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
349 Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
353 bool TreeSocket::RemoteKill(const std::string &prefix, std::deque<std::string> ¶ms)
355 if (params.size() != 2)
358 userrec* who = this->Instance->FindNick(params[0]);
362 /* Prepend kill source, if we don't have one */
363 if (*(params[1].c_str()) != '[')
365 params[1] = "[" + prefix + "] Killed (" + params[1] +")";
367 std::string reason = params[1];
368 params[1] = ":" + params[1];
369 Utils->DoOneToAllButSender(prefix,"KILL",params,prefix);
370 // NOTE: This is safe with kill hiding on, as RemoteKill is only reached if we have a server prefix.
371 // in short this is not executed for USERS.
372 who->Write(":%s KILL %s :%s (%s)", prefix.c_str(), who->nick, prefix.c_str(), reason.c_str());
373 userrec::QuitUser(this->Instance,who,reason);
378 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
380 if (params.size() < 1)
383 if (params.size() == 1)
385 TreeServer* ServerSource = Utils->FindServer(prefix);
388 ServerSource->SetPingFlag();
390 gettimeofday(&t, NULL);
391 long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
392 ServerSource->rtt = ts - ServerSource->LastPingMsec;
397 std::string forwardto = params[1];
398 if (forwardto == this->Instance->Config->ServerName)
401 * this is a PONG for us
402 * if the prefix is a user, check theyre local, and if they are,
403 * dump the PONG reply back to their fd. If its a server, do nowt.
404 * Services might want to send these s->s, but we dont need to yet.
406 userrec* u = this->Instance->FindNick(prefix);
409 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
414 // not for us, pass it on :)
415 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
422 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
424 if (params.size() < 2)
426 else if (params.size() < 3)
427 params.push_back("");
428 TreeServer* ServerSource = Utils->FindServer(prefix);
431 Utils->SetRemoteBursting(ServerSource, false);
433 if (params[0] == "*")
435 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
437 else if (*(params[0].c_str()) == '#')
439 chanrec* c = this->Instance->FindChan(params[0]);
442 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
445 else if (*(params[0].c_str()) != '#')
447 userrec* u = this->Instance->FindNick(params[0]);
450 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
455 params[2] = ":" + params[2];
456 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
460 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
462 if (params.size() < 1)
465 TreeServer* ServerSource = Utils->FindServer(prefix);
469 ServerSource->SetVersion(params[0]);
471 params[0] = ":" + params[0];
472 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
476 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
478 if (params.size() < 1)
480 userrec* u = this->Instance->FindNick(prefix);
484 u->ChangeDisplayedHost(params[0].c_str());
485 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
490 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
492 if (params.size() < 6)
494 bool propogate = false;
496 Utils->lines_to_apply = 0;
497 switch (*(params[0].c_str()))
500 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
501 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
503 Utils->lines_to_apply |= APPLY_ZLINES;
506 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
507 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
509 Utils->lines_to_apply |= APPLY_QLINES;
512 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
513 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
516 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
517 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
519 Utils->lines_to_apply |= APPLY_GLINES;
522 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
524 Utils->lines_to_apply |= APPLY_KLINES;
527 /* Just in case... */
528 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
532 /* Send it on its way */
535 if (atoi(params[4].c_str()))
537 time_t c_requires_crap = ConvToInt(params[4]) + Instance->Time();
538 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());
542 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());
544 params[5] = ":" + params[5];
545 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
549 Instance->XLines->apply_lines(Utils->lines_to_apply);
550 Utils->lines_to_apply = 0;
555 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
557 if (params.size() < 1)
559 userrec* u = this->Instance->FindNick(prefix);
562 u->ChangeName(params[0].c_str());
563 params[0] = ":" + params[0];
564 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
569 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> ¶ms)
571 if (params.size() < 1)
573 userrec* u = this->Instance->FindNick(prefix);
576 // an incoming request
577 if (params.size() == 1)
579 userrec* x = this->Instance->FindNick(params[0]);
580 if ((x) && (IS_LOCAL(x)))
582 userrec* x = this->Instance->FindNick(params[0]);
585 snprintf(signon, MAXBUF, "%lu", (unsigned long)x->signon);
586 snprintf(idle, MAXBUF, "%lu", (unsigned long)abs((x->idle_lastmsg) - Instance->Time(true)));
587 std::deque<std::string> par;
588 par.push_back(prefix);
589 par.push_back(signon);
591 // ours, we're done, pass it BACK
592 Utils->DoOneToOne(params[0], "IDLE", par, u->server);
596 // not ours pass it on
598 Utils->DoOneToOne(prefix, "IDLE", params, x->server);
601 else if (params.size() == 3)
603 std::string who_did_the_whois = params[0];
604 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
605 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
607 // an incoming reply to a whois we sent out
608 std::string nick_whoised = prefix;
609 unsigned long signon = atoi(params[1].c_str());
610 unsigned long idle = atoi(params[2].c_str());
611 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
613 do_whois(this->Instance, who_to_send_to, u, signon, idle, nick_whoised.c_str());
618 // not ours, pass it on
620 Utils->DoOneToOne(prefix, "IDLE", params, who_to_send_to->server);
627 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> ¶ms)
629 if (params.size() < 2)
631 userrec* u = this->Instance->FindNick(params[0]);
640 // continue the raw onwards
641 params[1] = ":" + params[1];
642 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
647 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
649 if (!params.size() || !Utils->EnableTimeSync)
654 if ((params.size() == 2) && (params[1] == "FORCE"))
657 time_t them = atoi(params[0].c_str());
658 time_t us = Instance->Time(false);
660 time_t diff = them - us;
662 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
664 if (force || (them != us))
666 time_t old = Instance->SetTimeDelta(diff);
667 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
673 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> ¶ms)
675 // :source.server TIME remote.server sendernick
676 // :remote.server TIME source.server sendernick TS
677 if (params.size() == 2)
679 // someone querying our time?
680 if (this->Instance->Config->ServerName == params[0])
682 userrec* u = this->Instance->FindNick(params[1]);
685 params.push_back(ConvToStr(Instance->Time(false)));
687 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
692 // not us, pass it on
693 userrec* u = this->Instance->FindNick(params[1]);
695 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
698 else if (params.size() == 3)
700 // a response to a previous TIME
701 userrec* u = this->Instance->FindNick(params[1]);
702 if ((u) && (IS_LOCAL(u)))
704 time_t rawtime = atol(params[2].c_str());
705 struct tm * timeinfo;
706 timeinfo = localtime(&rawtime);
708 snprintf(tms,26,"%s",asctime(timeinfo));
710 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
715 Utils->DoOneToOne(prefix,"TIME",params,u->server);
721 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
723 if (params.size() < 1)
725 if (params.size() == 1)
727 std::string stufftobounce = params[0];
728 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
733 std::string forwardto = params[1];
734 if (forwardto == this->Instance->Config->ServerName)
736 // this is a ping for us, send back PONG to the requesting server
737 params[1] = params[0];
738 params[0] = forwardto;
739 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
743 // not for us, pass it on :)
744 Utils->DoOneToOne(prefix,"PING",params,forwardto);
750 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
752 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
754 if (params.size() < 1)
756 chanrec* c = Instance->FindChan(params[0]);
759 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
761 ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
769 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
771 if (params.size() < 4)
773 std::string servername = params[0];
774 std::string password = params[1];
775 // hopcount is not used for a remote server, we calculate this ourselves
776 std::string description = params[3];
777 TreeServer* ParentOfThis = Utils->FindServer(prefix);
780 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
783 TreeServer* CheckDupe = Utils->FindServer(servername);
786 this->SendError("Server "+servername+" already exists!");
787 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix);
790 Link* lnk = Utils->FindLink(servername);
791 TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL, lnk ? lnk->Hidden : false);
792 ParentOfThis->AddChild(Node);
793 params[3] = ":" + params[3];
794 Utils->SetRemoteBursting(Node, true);
795 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
796 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
800 bool TreeSocket::ComparePass(const std::string &ours, const std::string &theirs)
802 if ((!strncmp(ours.c_str(), "HMAC-SHA256:", 12)) || (!strncmp(theirs.c_str(), "HMAC-SHA256:", 12)))
804 /* One or both of us specified hmac sha256, but we don't have sha256 module loaded!
805 * We can't allow this password as valid.
807 if (!Instance->FindModule("m_sha256.so") || !Utils->ChallengeResponse)
810 /* Straight string compare of hashes */
811 return ours == theirs;
814 /* Straight string compare of plaintext */
815 return ours == theirs;
818 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> ¶ms)
820 if (params.size() < 4)
823 irc::string servername = params[0].c_str();
824 std::string sname = params[0];
825 std::string password = params[1];
826 std::string description = params[3];
827 int hops = atoi(params[2].c_str());
829 this->InboundServerName = sname;
830 this->InboundDescription = description;
833 this->SendCapabilities();
837 this->SendError("Server too far away for authentication");
838 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
842 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
844 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty()))))
846 TreeServer* CheckDupe = Utils->FindServer(sname);
849 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
850 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
853 // Begin the sync here. this kickstarts the
854 // other side, waiting in WAIT_AUTH_2 state,
855 // into starting their burst, as it shows
857 this->LinkState = CONNECTED;
858 // we should add the details of this server now
859 // to the servers tree, as a child of the root
861 TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this,x->Hidden);
862 Utils->TreeRoot->AddChild(Node);
863 params[3] = ":" + params[3];
864 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
865 this->bursting = true;
870 this->SendError("Invalid credentials");
871 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
875 bool TreeSocket::Inbound_Server(std::deque<std::string> ¶ms)
877 if (params.size() < 4)
879 irc::string servername = params[0].c_str();
880 std::string sname = params[0];
881 std::string password = params[1];
882 std::string description = params[3];
883 int hops = atoi(params[2].c_str());
885 this->InboundServerName = sname;
886 this->InboundDescription = description;
889 this->SendCapabilities();
893 this->SendError("Server too far away for authentication");
894 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
898 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
900 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty()))))
902 /* First check for instances of the server that are waiting between the inbound and outbound SERVER command */
903 TreeSocket* CheckDupeSocket = Utils->FindBurstingServer(sname);
906 /* If we find one, we abort the link to prevent a race condition */
907 this->SendError("Negotiation collision");
908 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists in a negotiating state.");
909 CheckDupeSocket->SendError("Negotiation collision");
910 Instance->SE->DelFd(CheckDupeSocket);
911 CheckDupeSocket->Close();
914 /* Now check for fully initialized instances of the server */
915 TreeServer* CheckDupe = Utils->FindServer(sname);
918 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
919 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
922 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
925 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
926 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
929 Utils->AddBurstingServer(sname,this);
931 // this is good. Send our details: Our server name and description and hopcount of 0,
932 // along with the sendpass from this block.
933 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 :"+this->Instance->Config->ServerDesc);
934 // move to the next state, we are now waiting for THEM.
935 this->LinkState = WAIT_AUTH_2;
939 this->SendError("Invalid credentials");
940 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
944 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
947 irc::tokenstream tokens(line);
949 while (tokens.GetToken(param))
957 bool TreeSocket::ProcessLine(std::string &line)
959 std::deque<std::string> params;
963 line = line.substr(0, line.find_first_of("\r\n"));
968 Instance->Log(DEBUG, "S[%d] <- %s", this->GetFd(), line.c_str());
970 this->Split(line.c_str(),params);
975 if ((params[0][0] == ':') && (params.size() > 1))
977 prefix = params[0].substr(1);
980 command = params[0].c_str();
982 switch (this->LinkState)
987 // Waiting for SERVER command from remote server. Server initiating
988 // the connection sends the first SERVER command, listening server
989 // replies with theirs if its happy, then if the initiator is happy,
990 // it starts to send its net sync, which starts the merge, otherwise
991 // it sends an ERROR.
992 if (command == "PASS")
994 /* Silently ignored */
996 else if (command == "SERVER")
998 return this->Inbound_Server(params);
1000 else if (command == "ERROR")
1002 return this->Error(params);
1004 else if (command == "USER")
1006 this->SendError("Client connections to this port are prohibited.");
1009 else if (command == "CAPAB")
1011 return this->Capab(params);
1013 else if ((command == "U") || (command == "S"))
1015 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1020 irc::string error = "Invalid command in negotiation phase: " + command;
1021 this->SendError(assign(error));
1026 // Waiting for start of other side's netmerge to say they liked our
1028 if (command == "SERVER")
1030 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1034 else if ((command == "U") || (command == "S"))
1036 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1039 else if (command == "BURST")
1041 if (params.size() && Utils->EnableTimeSync)
1043 bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
1044 time_t them = atoi(params[0].c_str());
1045 time_t delta = them - Instance->Time(false);
1046 if ((delta < -600) || (delta > 600))
1048 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));
1049 SendError("Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than five minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1052 else if ((delta < -30) || (delta > 30))
1054 Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs(delta));
1057 if (!Utils->MasterTime && !we_have_delta)
1059 this->Instance->SetTimeDelta(delta);
1060 // Send this new timestamp to any other servers
1061 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
1064 this->LinkState = CONNECTED;
1065 Link* lnk = Utils->FindLink(InboundServerName);
1066 Node = new TreeServer(this->Utils,this->Instance, InboundServerName, InboundDescription, Utils->TreeRoot, this, lnk ? lnk->Hidden : false);
1067 Utils->DelBurstingServer(this);
1068 Utils->TreeRoot->AddChild(Node);
1070 params.push_back(InboundServerName);
1071 params.push_back("*");
1072 params.push_back("1");
1073 params.push_back(":"+InboundDescription);
1074 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1075 this->bursting = true;
1076 this->DoBurst(Node);
1078 else if (command == "ERROR")
1080 return this->Error(params);
1082 else if (command == "CAPAB")
1084 return this->Capab(params);
1089 this->SendError("Internal error -- listening socket accepted its own descriptor!!!");
1093 if (command == "SERVER")
1095 // another server we connected to, which was in WAIT_AUTH_1 state,
1096 // has just sent us their credentials. If we get this far, theyre
1097 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1098 // if we're happy with this, we should send our netburst which
1099 // kickstarts the merge.
1100 return this->Outbound_Reply_Server(params);
1102 else if (command == "ERROR")
1104 return this->Error(params);
1106 else if (command == "CAPAB")
1108 return this->Capab(params);
1112 // This is the 'authenticated' state, when all passwords
1113 // have been exchanged and anything past this point is taken
1116 if (!prefix.empty())
1118 std::string direction = prefix;
1119 userrec* t = this->Instance->FindNick(prefix);
1122 direction = t->server;
1124 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1125 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1127 if (route_back_again)
1128 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1132 * When there is activity on the socket, reset the ping counter so
1133 * that we're not wasting bandwidth pinging an active server.
1135 route_back_again->SetNextPingTime(time(NULL) + Utils->PingFreq);
1136 route_back_again->SetPingFlag();
1140 prefix = this->GetName();
1143 if ((command == "MODE") && (params.size() >= 2))
1145 chanrec* channel = Instance->FindChan(params[0]);
1148 userrec* x = Instance->FindNick(prefix);
1151 if (warned.find(x->server) == warned.end())
1153 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);
1154 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());
1155 warned[x->server] = x->nick;
1161 if (command == "SVSMODE")
1163 /* Services expects us to implement
1164 * SVSMODE. In inspircd its the same as
1170 /* Yes, know, this is a mess. Its reasonably fast though as we're
1171 * working with std::string here.
1173 if ((command == "NICK") && (params.size() >= 8))
1175 return this->IntroduceClient(prefix,params);
1177 else if (command == "FJOIN")
1179 TreeServer* ServerSource = Utils->FindServer(prefix);
1181 Utils->SetRemoteBursting(ServerSource, false);
1182 return this->ForceJoin(prefix,params);
1184 else if (command == "STATS")
1186 return this->Stats(prefix, params);
1188 else if (command == "MOTD")
1190 return this->Motd(prefix, params);
1192 else if (command == "KILL" && Utils->IsServer(prefix))
1194 return this->RemoteKill(prefix,params);
1196 else if (command == "MODULES")
1198 return this->Modules(prefix, params);
1200 else if (command == "ADMIN")
1202 return this->Admin(prefix, params);
1204 else if (command == "SERVER")
1206 return this->RemoteServer(prefix,params);
1208 else if (command == "ERROR")
1210 return this->Error(params);
1212 else if (command == "OPERTYPE")
1214 return this->OperType(prefix,params);
1216 else if (command == "FMODE")
1218 TreeServer* ServerSource = Utils->FindServer(prefix);
1220 Utils->SetRemoteBursting(ServerSource, false);
1221 return this->ForceMode(prefix,params);
1223 else if (command == "FTOPIC")
1225 return this->ForceTopic(prefix,params);
1227 else if (command == "REHASH")
1229 return this->RemoteRehash(prefix,params);
1231 else if (command == "METADATA")
1233 return this->MetaData(prefix,params);
1235 else if (command == "REMSTATUS")
1237 return this->RemoveStatus(prefix,params);
1239 else if (command == "PING")
1242 prefix = this->GetName();
1244 * We just got a ping from a server that's bursting.
1245 * This can't be right, so set them to not bursting, and
1246 * apply their lines.
1248 TreeServer* ServerSource = Utils->FindServer(prefix);
1250 Utils->SetRemoteBursting(ServerSource, false);
1254 this->bursting = false;
1255 Instance->XLines->apply_lines(Utils->lines_to_apply);
1256 Utils->lines_to_apply = 0;
1259 return this->LocalPing(prefix,params);
1261 else if (command == "PONG")
1264 prefix = this->GetName();
1266 * We just got a pong from a server that's bursting.
1267 * This can't be right, so set them to not bursting, and
1268 * apply their lines.
1270 TreeServer* ServerSource = Utils->FindServer(prefix);
1272 Utils->SetRemoteBursting(ServerSource, false);
1276 this->bursting = false;
1277 Instance->XLines->apply_lines(Utils->lines_to_apply);
1278 Utils->lines_to_apply = 0;
1281 return this->LocalPong(prefix,params);
1283 else if (command == "VERSION")
1285 return this->ServerVersion(prefix,params);
1287 else if (command == "FHOST")
1289 return this->ChangeHost(prefix,params);
1291 else if (command == "FNAME")
1293 return this->ChangeName(prefix,params);
1295 else if (command == "ADDLINE")
1297 TreeServer* ServerSource = Utils->FindServer(prefix);
1299 Utils->SetRemoteBursting(ServerSource, false);
1300 return this->AddLine(prefix,params);
1302 else if (command == "SVSNICK")
1306 prefix = this->GetName();
1308 return this->ForceNick(prefix,params);
1310 else if (command == "OPERQUIT")
1312 return this->OperQuit(prefix,params);
1314 else if (command == "IDLE")
1316 return this->Whois(prefix,params);
1318 else if (command == "PUSH")
1320 return this->Push(prefix,params);
1322 else if (command == "TIMESET")
1324 return this->HandleSetTime(prefix, params);
1326 else if (command == "TIME")
1328 return this->Time(prefix,params);
1330 else if ((command == "KICK") && (Utils->IsServer(prefix)))
1332 std::string sourceserv = this->myhost;
1333 if (params.size() == 3)
1335 userrec* user = this->Instance->FindNick(params[1]);
1336 chanrec* chan = this->Instance->FindChan(params[0]);
1339 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1340 /* Yikes, the channels gone! */
1344 if (!this->InboundServerName.empty())
1346 sourceserv = this->InboundServerName;
1348 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1350 else if (command == "SVSJOIN")
1354 prefix = this->GetName();
1356 return this->ServiceJoin(prefix,params);
1358 else if (command == "SQUIT")
1360 if (params.size() == 2)
1362 this->Squit(Utils->FindServer(params[0]),params[1]);
1366 else if (command == "OPERNOTICE")
1368 std::string sourceserv = this->myhost;
1369 if (!this->InboundServerName.empty())
1370 sourceserv = this->InboundServerName;
1371 if (params.size() >= 1)
1372 Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1373 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1375 else if (command == "MODENOTICE")
1377 std::string sourceserv = this->myhost;
1378 if (!this->InboundServerName.empty())
1379 sourceserv = this->InboundServerName;
1380 if (params.size() >= 2)
1382 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1384 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1386 else if (command == "SNONOTICE")
1388 std::string sourceserv = this->myhost;
1389 if (!this->InboundServerName.empty())
1390 sourceserv = this->InboundServerName;
1391 if (params.size() >= 2)
1393 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1395 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1397 else if (command == "ENDBURST")
1399 this->bursting = false;
1400 Instance->XLines->apply_lines(Utils->lines_to_apply);
1401 Utils->lines_to_apply = 0;
1402 std::string sourceserv = this->myhost;
1403 if (!this->InboundServerName.empty())
1404 sourceserv = this->InboundServerName;
1405 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1407 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1408 rmode.Send(Instance);
1414 // not a special inter-server command.
1415 // Emulate the actual user doing the command,
1416 // this saves us having a huge ugly parser.
1417 userrec* who = this->Instance->FindNick(prefix);
1418 std::string sourceserv = this->myhost;
1419 if (!this->InboundServerName.empty())
1421 sourceserv = this->InboundServerName;
1423 if ((!who) && (command == "MODE"))
1425 if (Utils->IsServer(prefix))
1427 const char* modelist[MAXPARAMETERS];
1428 for (size_t i = 0; i < params.size(); i++)
1429 modelist[i] = params[i].c_str();
1430 userrec* fake = new userrec(Instance);
1431 fake->SetFd(FD_MAGIC_NUMBER);
1432 this->Instance->SendMode(modelist, params.size(), fake);
1435 /* Hot potato! pass it on! */
1436 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1441 if ((command == "NICK") && (params.size() > 0))
1443 /* On nick messages, check that the nick doesnt
1444 * already exist here. If it does, kill their copy,
1447 userrec* x = this->Instance->FindNick(params[0]);
1448 if ((x) && (x != who))
1450 std::deque<std::string> p;
1451 p.push_back(params[0]);
1452 p.push_back(":Nickname collision ("+prefix+" -> "+params[0]+")");
1453 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1455 p.push_back(prefix);
1456 p.push_back(":Nickname collision");
1457 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1458 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1459 userrec* y = this->Instance->FindNick(prefix);
1462 userrec::QuitUser(this->Instance,y,"Nickname collision");
1464 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1468 target = who->server;
1469 const char* strparams[127];
1470 for (unsigned int q = 0; q < params.size(); q++)
1472 strparams[q] = params[q].c_str();
1474 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1477 this->SendError("Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1484 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1490 // its not a user. Its either a server, or somethings screwed up.
1491 if (Utils->IsServer(prefix))
1492 target = this->Instance->Config->ServerName;
1496 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1505 std::string TreeSocket::GetName()
1507 std::string sourceserv = this->myhost;
1508 if (!this->InboundServerName.empty())
1510 sourceserv = this->InboundServerName;
1515 void TreeSocket::OnTimeout()
1517 if (this->LinkState == CONNECTING)
1519 Utils->Creator->RemoteMessage(NULL, "CONNECT: Connection to \002%s\002 timed out.", myhost.c_str());
1520 Link* MyLink = Utils->FindLink(myhost);
1522 Utils->DoFailOver(MyLink);
1526 void TreeSocket::OnClose()
1528 if (this->LinkState == LISTENER)
1531 // Connection closed.
1532 // If the connection is fully up (state CONNECTED)
1533 // then propogate a netsplit to all peers.
1534 std::string quitserver = this->myhost;
1535 if (!this->InboundServerName.empty())
1537 quitserver = this->InboundServerName;
1539 TreeServer* s = Utils->FindServer(quitserver);
1542 Squit(s,"Remote host closed the connection");
1545 if (!quitserver.empty())
1547 Utils->Creator->RemoteMessage(NULL,"Connection to '\2%s\2' failed.",quitserver.c_str());
1548 time_t server_uptime = Instance->Time() - this->age;
1550 Utils->Creator->RemoteMessage(NULL,"Connection to '\2%s\2' was established for %s", quitserver.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str());
1554 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1556 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1557 * or discovering if this port is the server port, we don't allow connections from any
1558 * IPs for which we don't have a link block.
1562 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1565 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1566 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1571 Utils->Creator->RemoteMessage(NULL,"Server connection from %s denied (no link blocks with that IP address)", ip);
1577 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1578 s = s; /* Whinge whinge whinge, thats all GCC ever does. */