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 if (!this->Instance->IsChannel(params[1].c_str()))
326 userrec* u = this->Instance->FindNick(params[0]);
330 /* only join if it's local, otherwise just pass it on! */
332 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false, "", Instance->Time());
333 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
338 bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque<std::string> ¶ms)
340 if (params.size() < 1)
343 std::string servermask = params[0];
345 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
347 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
348 this->Instance->RehashServer();
349 Utils->ReadConfiguration(false);
350 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
352 Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
356 bool TreeSocket::RemoteKill(const std::string &prefix, std::deque<std::string> ¶ms)
358 if (params.size() != 2)
361 userrec* who = this->Instance->FindNick(params[0]);
365 /* Prepend kill source, if we don't have one */
366 if (*(params[1].c_str()) != '[')
368 params[1] = "[" + prefix + "] Killed (" + params[1] +")";
370 std::string reason = params[1];
371 params[1] = ":" + params[1];
372 Utils->DoOneToAllButSender(prefix,"KILL",params,prefix);
373 // NOTE: This is safe with kill hiding on, as RemoteKill is only reached if we have a server prefix.
374 // in short this is not executed for USERS.
375 who->Write(":%s KILL %s :%s (%s)", prefix.c_str(), who->nick, prefix.c_str(), reason.c_str());
376 userrec::QuitUser(this->Instance,who,reason);
381 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
383 if (params.size() < 1)
386 if (params.size() == 1)
388 TreeServer* ServerSource = Utils->FindServer(prefix);
391 ServerSource->SetPingFlag();
393 gettimeofday(&t, NULL);
394 long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
395 ServerSource->rtt = ts - ServerSource->LastPingMsec;
400 std::string forwardto = params[1];
401 if (forwardto == this->Instance->Config->ServerName)
404 * this is a PONG for us
405 * if the prefix is a user, check theyre local, and if they are,
406 * dump the PONG reply back to their fd. If its a server, do nowt.
407 * Services might want to send these s->s, but we dont need to yet.
409 userrec* u = this->Instance->FindNick(prefix);
412 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
417 // not for us, pass it on :)
418 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
425 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
427 if (params.size() < 2)
429 else if (params.size() < 3)
430 params.push_back("");
431 TreeServer* ServerSource = Utils->FindServer(prefix);
434 Utils->SetRemoteBursting(ServerSource, false);
436 if (params[0] == "*")
438 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
440 else if (*(params[0].c_str()) == '#')
442 chanrec* c = this->Instance->FindChan(params[0]);
445 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
448 else if (*(params[0].c_str()) != '#')
450 userrec* u = this->Instance->FindNick(params[0]);
453 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
458 params[2] = ":" + params[2];
459 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
463 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
465 if (params.size() < 1)
468 TreeServer* ServerSource = Utils->FindServer(prefix);
472 ServerSource->SetVersion(params[0]);
474 params[0] = ":" + params[0];
475 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
479 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
481 if (params.size() < 1)
483 userrec* u = this->Instance->FindNick(prefix);
487 u->ChangeDisplayedHost(params[0].c_str());
488 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
493 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
495 if (params.size() < 6)
497 bool propogate = false;
499 Utils->lines_to_apply = 0;
500 switch (*(params[0].c_str()))
503 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
504 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
506 Utils->lines_to_apply |= APPLY_ZLINES;
509 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
510 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
512 Utils->lines_to_apply |= APPLY_QLINES;
515 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
516 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
519 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
520 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
522 Utils->lines_to_apply |= APPLY_GLINES;
525 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
527 Utils->lines_to_apply |= APPLY_KLINES;
530 /* Just in case... */
531 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
535 /* Send it on its way */
538 if (atoi(params[4].c_str()))
540 time_t c_requires_crap = ConvToInt(params[4]) + Instance->Time();
541 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());
545 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());
547 params[5] = ":" + params[5];
548 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
552 Instance->XLines->apply_lines(Utils->lines_to_apply);
553 Utils->lines_to_apply = 0;
558 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
560 if (params.size() < 1)
562 userrec* u = this->Instance->FindNick(prefix);
565 u->ChangeName(params[0].c_str());
566 params[0] = ":" + params[0];
567 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
572 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> ¶ms)
574 if (params.size() < 1)
576 userrec* u = this->Instance->FindNick(prefix);
579 // an incoming request
580 if (params.size() == 1)
582 userrec* x = this->Instance->FindNick(params[0]);
583 if ((x) && (IS_LOCAL(x)))
585 userrec* x = this->Instance->FindNick(params[0]);
588 snprintf(signon, MAXBUF, "%lu", (unsigned long)x->signon);
589 snprintf(idle, MAXBUF, "%lu", (unsigned long)abs((x->idle_lastmsg) - Instance->Time(true)));
590 std::deque<std::string> par;
591 par.push_back(prefix);
592 par.push_back(signon);
594 // ours, we're done, pass it BACK
595 Utils->DoOneToOne(params[0], "IDLE", par, u->server);
599 // not ours pass it on
601 Utils->DoOneToOne(prefix, "IDLE", params, x->server);
604 else if (params.size() == 3)
606 std::string who_did_the_whois = params[0];
607 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
608 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
610 // an incoming reply to a whois we sent out
611 std::string nick_whoised = prefix;
612 unsigned long signon = atoi(params[1].c_str());
613 unsigned long idle = atoi(params[2].c_str());
614 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
616 do_whois(this->Instance, who_to_send_to, u, signon, idle, nick_whoised.c_str());
621 // not ours, pass it on
623 Utils->DoOneToOne(prefix, "IDLE", params, who_to_send_to->server);
630 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> ¶ms)
632 if (params.size() < 2)
634 userrec* u = this->Instance->FindNick(params[0]);
643 // continue the raw onwards
644 params[1] = ":" + params[1];
645 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
650 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
652 if (!params.size() || !Utils->EnableTimeSync)
657 if ((params.size() == 2) && (params[1] == "FORCE"))
660 time_t them = atoi(params[0].c_str());
661 time_t us = Instance->Time(false);
663 time_t diff = them - us;
665 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
667 if (force || (them != us))
669 time_t old = Instance->SetTimeDelta(diff);
670 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
676 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> ¶ms)
678 // :source.server TIME remote.server sendernick
679 // :remote.server TIME source.server sendernick TS
680 if (params.size() == 2)
682 // someone querying our time?
683 if (this->Instance->Config->ServerName == params[0])
685 userrec* u = this->Instance->FindNick(params[1]);
688 params.push_back(ConvToStr(Instance->Time(false)));
690 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
695 // not us, pass it on
696 userrec* u = this->Instance->FindNick(params[1]);
698 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
701 else if (params.size() == 3)
703 // a response to a previous TIME
704 userrec* u = this->Instance->FindNick(params[1]);
705 if ((u) && (IS_LOCAL(u)))
707 time_t rawtime = atol(params[2].c_str());
708 struct tm * timeinfo;
709 timeinfo = localtime(&rawtime);
711 snprintf(tms,26,"%s",asctime(timeinfo));
713 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
718 Utils->DoOneToOne(prefix,"TIME",params,u->server);
724 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
726 if (params.size() < 1)
728 if (params.size() == 1)
730 std::string stufftobounce = params[0];
731 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
736 std::string forwardto = params[1];
737 if (forwardto == this->Instance->Config->ServerName)
739 // this is a ping for us, send back PONG to the requesting server
740 params[1] = params[0];
741 params[0] = forwardto;
742 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
746 // not for us, pass it on :)
747 Utils->DoOneToOne(prefix,"PING",params,forwardto);
753 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
755 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
757 if (params.size() < 1)
759 chanrec* c = Instance->FindChan(params[0]);
762 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
764 ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
772 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
774 if (params.size() < 4)
776 std::string servername = params[0];
777 std::string password = params[1];
778 // hopcount is not used for a remote server, we calculate this ourselves
779 std::string description = params[3];
780 TreeServer* ParentOfThis = Utils->FindServer(prefix);
783 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
786 TreeServer* CheckDupe = Utils->FindServer(servername);
789 this->SendError("Server "+servername+" already exists!");
790 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix);
793 Link* lnk = Utils->FindLink(servername);
794 TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL, lnk ? lnk->Hidden : false);
795 ParentOfThis->AddChild(Node);
796 params[3] = ":" + params[3];
797 Utils->SetRemoteBursting(Node, true);
798 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
799 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
803 bool TreeSocket::ComparePass(const std::string &ours, const std::string &theirs)
805 if ((!strncmp(ours.c_str(), "HMAC-SHA256:", 12)) || (!strncmp(theirs.c_str(), "HMAC-SHA256:", 12)))
807 /* One or both of us specified hmac sha256, but we don't have sha256 module loaded!
808 * We can't allow this password as valid.
810 if (!Instance->FindModule("m_sha256.so") || !Utils->ChallengeResponse)
813 /* Straight string compare of hashes */
814 return ours == theirs;
817 /* Straight string compare of plaintext */
818 return ours == theirs;
821 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> ¶ms)
823 if (params.size() < 4)
826 irc::string servername = params[0].c_str();
827 std::string sname = params[0];
828 std::string password = params[1];
829 std::string description = params[3];
830 int hops = atoi(params[2].c_str());
832 this->InboundServerName = sname;
833 this->InboundDescription = description;
836 this->SendCapabilities();
840 this->SendError("Server too far away for authentication");
841 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
845 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
847 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty()))))
849 TreeServer* CheckDupe = Utils->FindServer(sname);
852 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
853 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
856 // Begin the sync here. this kickstarts the
857 // other side, waiting in WAIT_AUTH_2 state,
858 // into starting their burst, as it shows
860 this->LinkState = CONNECTED;
861 // we should add the details of this server now
862 // to the servers tree, as a child of the root
864 TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this,x->Hidden);
865 Utils->TreeRoot->AddChild(Node);
866 params[3] = ":" + params[3];
867 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
868 this->bursting = true;
873 this->SendError("Invalid credentials");
874 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
878 bool TreeSocket::Inbound_Server(std::deque<std::string> ¶ms)
880 if (params.size() < 4)
882 irc::string servername = params[0].c_str();
883 std::string sname = params[0];
884 std::string password = params[1];
885 std::string description = params[3];
886 int hops = atoi(params[2].c_str());
888 this->InboundServerName = sname;
889 this->InboundDescription = description;
892 this->SendCapabilities();
896 this->SendError("Server too far away for authentication");
897 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
901 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
903 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty()))))
905 /* First check for instances of the server that are waiting between the inbound and outbound SERVER command */
906 TreeSocket* CheckDupeSocket = Utils->FindBurstingServer(sname);
909 /* If we find one, we abort the link to prevent a race condition */
910 this->SendError("Negotiation collision");
911 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists in a negotiating state.");
912 CheckDupeSocket->SendError("Negotiation collision");
913 Instance->SE->DelFd(CheckDupeSocket);
914 CheckDupeSocket->Close();
917 /* Now check for fully initialized instances of the server */
918 TreeServer* CheckDupe = Utils->FindServer(sname);
921 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
922 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
925 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
928 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
929 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
932 Utils->AddBurstingServer(sname,this);
934 // this is good. Send our details: Our server name and description and hopcount of 0,
935 // along with the sendpass from this block.
936 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 :"+this->Instance->Config->ServerDesc);
937 // move to the next state, we are now waiting for THEM.
938 this->LinkState = WAIT_AUTH_2;
942 this->SendError("Invalid credentials");
943 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
947 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
950 irc::tokenstream tokens(line);
952 while (tokens.GetToken(param))
960 bool TreeSocket::ProcessLine(std::string &line)
962 std::deque<std::string> params;
966 line = line.substr(0, line.find_first_of("\r\n"));
971 Instance->Log(DEBUG, "S[%d] <- %s", this->GetFd(), line.c_str());
973 this->Split(line.c_str(),params);
978 if ((params[0][0] == ':') && (params.size() > 1))
980 prefix = params[0].substr(1);
983 command = params[0].c_str();
985 switch (this->LinkState)
990 // Waiting for SERVER command from remote server. Server initiating
991 // the connection sends the first SERVER command, listening server
992 // replies with theirs if its happy, then if the initiator is happy,
993 // it starts to send its net sync, which starts the merge, otherwise
994 // it sends an ERROR.
995 if (command == "PASS")
997 /* Silently ignored */
999 else if (command == "SERVER")
1001 return this->Inbound_Server(params);
1003 else if (command == "ERROR")
1005 return this->Error(params);
1007 else if (command == "USER")
1009 this->SendError("Client connections to this port are prohibited.");
1012 else if (command == "CAPAB")
1014 return this->Capab(params);
1016 else if ((command == "U") || (command == "S"))
1018 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1023 irc::string error = "Invalid command in negotiation phase: " + command;
1024 this->SendError(assign(error));
1029 // Waiting for start of other side's netmerge to say they liked our
1031 if (command == "SERVER")
1033 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1037 else if ((command == "U") || (command == "S"))
1039 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1042 else if (command == "BURST")
1044 if (params.size() && Utils->EnableTimeSync)
1046 bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
1047 time_t them = atoi(params[0].c_str());
1048 time_t delta = them - Instance->Time(false);
1049 if ((delta < -600) || (delta > 600))
1051 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));
1052 SendError("Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than five minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1055 else if ((delta < -30) || (delta > 30))
1057 Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs(delta));
1060 if (!Utils->MasterTime && !we_have_delta)
1062 this->Instance->SetTimeDelta(delta);
1063 // Send this new timestamp to any other servers
1064 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
1067 this->LinkState = CONNECTED;
1068 Link* lnk = Utils->FindLink(InboundServerName);
1069 Node = new TreeServer(this->Utils,this->Instance, InboundServerName, InboundDescription, Utils->TreeRoot, this, lnk ? lnk->Hidden : false);
1070 Utils->DelBurstingServer(this);
1071 Utils->TreeRoot->AddChild(Node);
1073 params.push_back(InboundServerName);
1074 params.push_back("*");
1075 params.push_back("1");
1076 params.push_back(":"+InboundDescription);
1077 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1078 this->bursting = true;
1079 this->DoBurst(Node);
1081 else if (command == "ERROR")
1083 return this->Error(params);
1085 else if (command == "CAPAB")
1087 return this->Capab(params);
1092 this->SendError("Internal error -- listening socket accepted its own descriptor!!!");
1096 if (command == "SERVER")
1098 // another server we connected to, which was in WAIT_AUTH_1 state,
1099 // has just sent us their credentials. If we get this far, theyre
1100 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1101 // if we're happy with this, we should send our netburst which
1102 // kickstarts the merge.
1103 return this->Outbound_Reply_Server(params);
1105 else if (command == "ERROR")
1107 return this->Error(params);
1109 else if (command == "CAPAB")
1111 return this->Capab(params);
1115 // This is the 'authenticated' state, when all passwords
1116 // have been exchanged and anything past this point is taken
1119 if (!prefix.empty())
1121 std::string direction = prefix;
1123 userrec *t = this->Instance->FindUUID(prefix);
1126 userrec* t = this->Instance->FindNick(prefix);
1129 Instance->Log(DEBUG,"Ack, legacy command!");
1134 direction = t->server;
1137 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1138 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1140 if (route_back_again)
1141 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1145 * When there is activity on the socket, reset the ping counter so
1146 * that we're not wasting bandwidth pinging an active server.
1148 route_back_again->SetNextPingTime(time(NULL) + Utils->PingFreq);
1149 route_back_again->SetPingFlag();
1153 prefix = this->GetName();
1156 if ((command == "MODE") && (params.size() >= 2))
1158 chanrec* channel = Instance->FindChan(params[0]);
1161 userrec* x = Instance->FindNick(prefix);
1164 if (warned.find(x->server) == warned.end())
1166 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);
1167 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());
1168 warned[x->server] = x->nick;
1174 if (command == "SVSMODE")
1176 /* Services expects us to implement
1177 * SVSMODE. In inspircd its the same as
1183 /* Yes, know, this is a mess. Its reasonably fast though as we're
1184 * working with std::string here.
1186 if (command == "UID")
1188 return this->ParseUID(prefix, params);
1190 else if (command == "FJOIN")
1192 TreeServer* ServerSource = Utils->FindServer(prefix);
1194 Utils->SetRemoteBursting(ServerSource, false);
1195 return this->ForceJoin(prefix,params);
1197 else if (command == "STATS")
1199 return this->Stats(prefix, params);
1201 else if (command == "MOTD")
1203 return this->Motd(prefix, params);
1205 else if (command == "KILL" && Utils->IsServer(prefix))
1207 return this->RemoteKill(prefix,params);
1209 else if (command == "MODULES")
1211 return this->Modules(prefix, params);
1213 else if (command == "ADMIN")
1215 return this->Admin(prefix, params);
1217 else if (command == "SERVER")
1219 return this->RemoteServer(prefix,params);
1221 else if (command == "ERROR")
1223 return this->Error(params);
1225 else if (command == "OPERTYPE")
1227 return this->OperType(prefix,params);
1229 else if (command == "FMODE")
1231 TreeServer* ServerSource = Utils->FindServer(prefix);
1233 Utils->SetRemoteBursting(ServerSource, false);
1234 return this->ForceMode(prefix,params);
1236 else if (command == "FTOPIC")
1238 return this->ForceTopic(prefix,params);
1240 else if (command == "REHASH")
1242 return this->RemoteRehash(prefix,params);
1244 else if (command == "METADATA")
1246 return this->MetaData(prefix,params);
1248 else if (command == "REMSTATUS")
1250 return this->RemoveStatus(prefix,params);
1252 else if (command == "PING")
1255 prefix = this->GetName();
1257 * We just got a ping from a server that's bursting.
1258 * This can't be right, so set them to not bursting, and
1259 * apply their lines.
1261 TreeServer* ServerSource = Utils->FindServer(prefix);
1263 Utils->SetRemoteBursting(ServerSource, false);
1267 this->bursting = false;
1268 Instance->XLines->apply_lines(Utils->lines_to_apply);
1269 Utils->lines_to_apply = 0;
1272 return this->LocalPing(prefix,params);
1274 else if (command == "PONG")
1277 prefix = this->GetName();
1279 * We just got a pong from a server that's bursting.
1280 * This can't be right, so set them to not bursting, and
1281 * apply their lines.
1283 TreeServer* ServerSource = Utils->FindServer(prefix);
1285 Utils->SetRemoteBursting(ServerSource, false);
1289 this->bursting = false;
1290 Instance->XLines->apply_lines(Utils->lines_to_apply);
1291 Utils->lines_to_apply = 0;
1294 return this->LocalPong(prefix,params);
1296 else if (command == "VERSION")
1298 return this->ServerVersion(prefix,params);
1300 else if (command == "FHOST")
1302 return this->ChangeHost(prefix,params);
1304 else if (command == "FNAME")
1306 return this->ChangeName(prefix,params);
1308 else if (command == "ADDLINE")
1310 TreeServer* ServerSource = Utils->FindServer(prefix);
1312 Utils->SetRemoteBursting(ServerSource, false);
1313 return this->AddLine(prefix,params);
1315 else if (command == "SVSNICK")
1319 prefix = this->GetName();
1321 return this->ForceNick(prefix,params);
1323 else if (command == "OPERQUIT")
1325 return this->OperQuit(prefix,params);
1327 else if (command == "IDLE")
1329 return this->Whois(prefix,params);
1331 else if (command == "PUSH")
1333 return this->Push(prefix,params);
1335 else if (command == "TIMESET")
1337 return this->HandleSetTime(prefix, params);
1339 else if (command == "TIME")
1341 return this->Time(prefix,params);
1343 else if ((command == "KICK") && (Utils->IsServer(prefix)))
1345 std::string sourceserv = this->myhost;
1346 if (params.size() == 3)
1348 userrec* user = this->Instance->FindNick(params[1]);
1349 chanrec* chan = this->Instance->FindChan(params[0]);
1352 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1353 /* Yikes, the channels gone! */
1357 if (!this->InboundServerName.empty())
1359 sourceserv = this->InboundServerName;
1361 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1363 else if (command == "SVSJOIN")
1367 prefix = this->GetName();
1369 return this->ServiceJoin(prefix,params);
1371 else if (command == "SQUIT")
1373 if (params.size() == 2)
1375 this->Squit(Utils->FindServer(params[0]),params[1]);
1379 else if (command == "OPERNOTICE")
1381 std::string sourceserv = this->myhost;
1382 if (!this->InboundServerName.empty())
1383 sourceserv = this->InboundServerName;
1384 if (params.size() >= 1)
1385 Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1386 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1388 else if (command == "MODENOTICE")
1390 std::string sourceserv = this->myhost;
1391 if (!this->InboundServerName.empty())
1392 sourceserv = this->InboundServerName;
1393 if (params.size() >= 2)
1395 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1397 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1399 else if (command == "SNONOTICE")
1401 std::string sourceserv = this->myhost;
1402 if (!this->InboundServerName.empty())
1403 sourceserv = this->InboundServerName;
1404 if (params.size() >= 2)
1406 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1408 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1410 else if (command == "ENDBURST")
1412 this->bursting = false;
1413 Instance->XLines->apply_lines(Utils->lines_to_apply);
1414 Utils->lines_to_apply = 0;
1415 std::string sourceserv = this->myhost;
1416 if (!this->InboundServerName.empty())
1417 sourceserv = this->InboundServerName;
1418 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1420 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1421 rmode.Send(Instance);
1428 * Not a special s2s command. Emulate the user doing it.
1429 * This saves us having a huge ugly command parser again.
1435 * First, let's find them by UID. If we don't find, try again
1436 * by nick (to catch legacy commands temporarily).
1437 * If we still don't .. carry on and pray. -- w00t
1439 userrec *who = this->Instance->FindUUID(prefix);
1443 userrec* who = this->Instance->FindNick(prefix);
1447 Instance->Log(DEBUG, "Glark! I got a legacy command!");
1451 std::string sourceserv = this->myhost;
1452 if (!this->InboundServerName.empty())
1454 sourceserv = this->InboundServerName;
1456 if ((!who) && (command == "MODE"))
1458 if (Utils->IsServer(prefix))
1460 const char* modelist[MAXPARAMETERS];
1461 for (size_t i = 0; i < params.size(); i++)
1462 modelist[i] = params[i].c_str();
1463 userrec* fake = new userrec(Instance);
1464 fake->SetFd(FD_MAGIC_NUMBER);
1465 this->Instance->SendMode(modelist, params.size(), fake);
1468 /* Hot potato! pass it on! */
1469 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1474 if ((command == "NICK") && (params.size() > 0))
1476 /* On nick messages, check that the nick doesnt
1477 * already exist here. If it does, kill their copy,
1480 userrec* x = this->Instance->FindNick(params[0]);
1481 if ((x) && (x != who))
1483 std::deque<std::string> p;
1484 p.push_back(params[0]);
1485 p.push_back(":Nickname collision ("+prefix+" -> "+params[0]+")");
1486 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1488 p.push_back(prefix);
1489 p.push_back(":Nickname collision");
1490 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1491 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1492 userrec* y = this->Instance->FindNick(prefix);
1495 userrec::QuitUser(this->Instance,y,"Nickname collision");
1497 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1501 target = who->server;
1502 const char* strparams[127];
1503 for (unsigned int q = 0; q < params.size(); q++)
1505 strparams[q] = params[q].c_str();
1507 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1510 this->SendError("Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1517 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1523 // its not a user. Its either a server, or somethings screwed up.
1524 if (Utils->IsServer(prefix))
1525 target = this->Instance->Config->ServerName;
1529 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1538 std::string TreeSocket::GetName()
1540 std::string sourceserv = this->myhost;
1541 if (!this->InboundServerName.empty())
1543 sourceserv = this->InboundServerName;
1548 void TreeSocket::OnTimeout()
1550 if (this->LinkState == CONNECTING)
1552 Utils->Creator->RemoteMessage(NULL, "CONNECT: Connection to \002%s\002 timed out.", myhost.c_str());
1553 Link* MyLink = Utils->FindLink(myhost);
1555 Utils->DoFailOver(MyLink);
1559 void TreeSocket::OnClose()
1561 if (this->LinkState == LISTENER)
1564 // Connection closed.
1565 // If the connection is fully up (state CONNECTED)
1566 // then propogate a netsplit to all peers.
1567 std::string quitserver = this->myhost;
1568 if (!this->InboundServerName.empty())
1570 quitserver = this->InboundServerName;
1572 TreeServer* s = Utils->FindServer(quitserver);
1575 Squit(s,"Remote host closed the connection");
1578 if (!quitserver.empty())
1580 Utils->Creator->RemoteMessage(NULL,"Connection to '\2%s\2' failed.",quitserver.c_str());
1581 time_t server_uptime = Instance->Time() - this->age;
1583 Utils->Creator->RemoteMessage(NULL,"Connection to '\2%s\2' was established for %s", quitserver.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str());
1587 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1589 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1590 * or discovering if this port is the server port, we don't allow connections from any
1591 * IPs for which we don't have a link block.
1595 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1598 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1599 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1604 Utils->Creator->RemoteMessage(NULL,"Server connection from %s denied (no link blocks with that IP address)", ip);
1610 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1611 s = s; /* Whinge whinge whinge, thats all GCC ever does. */