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 bool TreeSocket::ServiceJoin(const std::string &prefix, std::deque<std::string> ¶ms)
299 if (params.size() < 2)
302 userrec* u = this->Instance->FindNick(params[0]);
306 /* only join if it's local, otherwise just pass it on! */
308 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false, "", Instance->Time());
309 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
314 bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque<std::string> ¶ms)
316 if (params.size() < 1)
319 std::string servermask = params[0];
321 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
323 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
324 this->Instance->RehashServer();
325 Utils->ReadConfiguration(false);
326 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
328 Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
332 bool TreeSocket::RemoteKill(const std::string &prefix, std::deque<std::string> ¶ms)
334 if (params.size() != 2)
337 userrec* who = this->Instance->FindNick(params[0]);
341 /* Prepend kill source, if we don't have one */
342 if (*(params[1].c_str()) != '[')
344 params[1] = "[" + prefix + "] Killed (" + params[1] +")";
346 std::string reason = params[1];
347 params[1] = ":" + params[1];
348 Utils->DoOneToAllButSender(prefix,"KILL",params,prefix);
349 // NOTE: This is safe with kill hiding on, as RemoteKill is only reached if we have a server prefix.
350 // in short this is not executed for USERS.
351 who->Write(":%s KILL %s :%s (%s)", prefix.c_str(), who->nick, prefix.c_str(), reason.c_str());
352 userrec::QuitUser(this->Instance,who,reason);
357 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
359 if (params.size() < 1)
362 if (params.size() == 1)
364 TreeServer* ServerSource = Utils->FindServer(prefix);
367 ServerSource->SetPingFlag();
369 gettimeofday(&t, NULL);
370 long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
371 ServerSource->rtt = ts - ServerSource->LastPingMsec;
376 std::string forwardto = params[1];
377 if (forwardto == this->Instance->Config->ServerName)
380 * this is a PONG for us
381 * if the prefix is a user, check theyre local, and if they are,
382 * dump the PONG reply back to their fd. If its a server, do nowt.
383 * Services might want to send these s->s, but we dont need to yet.
385 userrec* u = this->Instance->FindNick(prefix);
388 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
393 // not for us, pass it on :)
394 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
401 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
403 if (params.size() < 2)
405 else if (params.size() < 3)
406 params.push_back("");
407 TreeServer* ServerSource = Utils->FindServer(prefix);
410 Utils->SetRemoteBursting(ServerSource, false);
412 if (params[0] == "*")
414 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
416 else if (*(params[0].c_str()) == '#')
418 chanrec* c = this->Instance->FindChan(params[0]);
421 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
424 else if (*(params[0].c_str()) != '#')
426 userrec* u = this->Instance->FindNick(params[0]);
429 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
434 params[2] = ":" + params[2];
435 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
439 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
441 if (params.size() < 1)
444 TreeServer* ServerSource = Utils->FindServer(prefix);
448 ServerSource->SetVersion(params[0]);
450 params[0] = ":" + params[0];
451 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
455 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
457 if (params.size() < 1)
459 userrec* u = this->Instance->FindNick(prefix);
463 u->ChangeDisplayedHost(params[0].c_str());
464 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
469 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
471 if (params.size() < 6)
473 bool propogate = false;
475 Utils->lines_to_apply = 0;
476 switch (*(params[0].c_str()))
479 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
480 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
482 Utils->lines_to_apply |= APPLY_ZLINES;
485 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
486 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
488 Utils->lines_to_apply |= APPLY_QLINES;
491 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
492 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
495 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
496 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
498 Utils->lines_to_apply |= APPLY_GLINES;
501 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
503 Utils->lines_to_apply |= APPLY_KLINES;
506 /* Just in case... */
507 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
511 /* Send it on its way */
514 if (atoi(params[4].c_str()))
516 time_t c_requires_crap = ConvToInt(params[4]) + Instance->Time();
517 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());
521 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());
523 params[5] = ":" + params[5];
524 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
528 Instance->XLines->apply_lines(Utils->lines_to_apply);
529 Utils->lines_to_apply = 0;
534 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
536 if (params.size() < 1)
538 userrec* u = this->Instance->FindNick(prefix);
541 u->ChangeName(params[0].c_str());
542 params[0] = ":" + params[0];
543 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
548 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> ¶ms)
550 if (params.size() < 1)
552 userrec* u = this->Instance->FindNick(prefix);
555 // an incoming request
556 if (params.size() == 1)
558 userrec* x = this->Instance->FindNick(params[0]);
559 if ((x) && (IS_LOCAL(x)))
561 userrec* x = this->Instance->FindNick(params[0]);
564 snprintf(signon, MAXBUF, "%lu", (unsigned long)x->signon);
565 snprintf(idle, MAXBUF, "%lu", (unsigned long)abs((x->idle_lastmsg) - Instance->Time(true)));
566 std::deque<std::string> par;
567 par.push_back(prefix);
568 par.push_back(signon);
570 // ours, we're done, pass it BACK
571 Utils->DoOneToOne(params[0], "IDLE", par, u->server);
575 // not ours pass it on
577 Utils->DoOneToOne(prefix, "IDLE", params, x->server);
580 else if (params.size() == 3)
582 std::string who_did_the_whois = params[0];
583 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
584 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
586 // an incoming reply to a whois we sent out
587 std::string nick_whoised = prefix;
588 unsigned long signon = atoi(params[1].c_str());
589 unsigned long idle = atoi(params[2].c_str());
590 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
592 do_whois(this->Instance, who_to_send_to, u, signon, idle, nick_whoised.c_str());
597 // not ours, pass it on
599 Utils->DoOneToOne(prefix, "IDLE", params, who_to_send_to->server);
606 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> ¶ms)
608 if (params.size() < 2)
610 userrec* u = this->Instance->FindNick(params[0]);
619 // continue the raw onwards
620 params[1] = ":" + params[1];
621 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
626 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
628 if (!params.size() || !Utils->EnableTimeSync)
633 if ((params.size() == 2) && (params[1] == "FORCE"))
636 time_t them = atoi(params[0].c_str());
637 time_t us = Instance->Time(false);
639 time_t diff = them - us;
641 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
643 if (force || (them != us))
645 time_t old = Instance->SetTimeDelta(diff);
646 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
652 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> ¶ms)
654 // :source.server TIME remote.server sendernick
655 // :remote.server TIME source.server sendernick TS
656 if (params.size() == 2)
658 // someone querying our time?
659 if (this->Instance->Config->ServerName == params[0])
661 userrec* u = this->Instance->FindNick(params[1]);
664 params.push_back(ConvToStr(Instance->Time(false)));
666 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
671 // not us, pass it on
672 userrec* u = this->Instance->FindNick(params[1]);
674 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
677 else if (params.size() == 3)
679 // a response to a previous TIME
680 userrec* u = this->Instance->FindNick(params[1]);
681 if ((u) && (IS_LOCAL(u)))
683 time_t rawtime = atol(params[2].c_str());
684 struct tm * timeinfo;
685 timeinfo = localtime(&rawtime);
687 snprintf(tms,26,"%s",asctime(timeinfo));
689 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
694 Utils->DoOneToOne(prefix,"TIME",params,u->server);
700 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
702 if (params.size() < 1)
704 if (params.size() == 1)
706 std::string stufftobounce = params[0];
707 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
712 std::string forwardto = params[1];
713 if (forwardto == this->Instance->Config->ServerName)
715 // this is a ping for us, send back PONG to the requesting server
716 params[1] = params[0];
717 params[0] = forwardto;
718 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
722 // not for us, pass it on :)
723 Utils->DoOneToOne(prefix,"PING",params,forwardto);
729 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
731 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
733 if (params.size() < 1)
735 chanrec* c = Instance->FindChan(params[0]);
738 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
740 ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
748 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
750 if (params.size() < 4)
752 std::string servername = params[0];
753 std::string password = params[1];
754 // hopcount is not used for a remote server, we calculate this ourselves
755 std::string description = params[3];
756 TreeServer* ParentOfThis = Utils->FindServer(prefix);
759 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
762 TreeServer* CheckDupe = Utils->FindServer(servername);
765 this->SendError("Server "+servername+" already exists!");
766 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix);
769 Link* lnk = Utils->FindLink(servername);
770 TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL, lnk ? lnk->Hidden : false);
771 ParentOfThis->AddChild(Node);
772 params[3] = ":" + params[3];
773 Utils->SetRemoteBursting(Node, true);
774 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
775 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
779 bool TreeSocket::ComparePass(const std::string &ours, const std::string &theirs)
781 if ((!strncmp(ours.c_str(), "HMAC-SHA256:", 12)) || (!strncmp(theirs.c_str(), "HMAC-SHA256:", 12)))
783 /* One or both of us specified hmac sha256, but we don't have sha256 module loaded!
784 * We can't allow this password as valid.
786 if (!Instance->FindModule("m_sha256.so") || !Utils->ChallengeResponse)
789 /* Straight string compare of hashes */
790 return ours == theirs;
793 /* Straight string compare of plaintext */
794 return ours == theirs;
797 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> ¶ms)
799 if (params.size() < 4)
802 irc::string servername = params[0].c_str();
803 std::string sname = params[0];
804 std::string password = params[1];
805 std::string description = params[3];
806 int hops = atoi(params[2].c_str());
808 this->InboundServerName = sname;
809 this->InboundDescription = description;
812 this->SendCapabilities();
816 this->SendError("Server too far away for authentication");
817 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
821 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
823 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty()))))
825 TreeServer* CheckDupe = Utils->FindServer(sname);
828 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
829 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
832 // Begin the sync here. this kickstarts the
833 // other side, waiting in WAIT_AUTH_2 state,
834 // into starting their burst, as it shows
836 this->LinkState = CONNECTED;
837 // we should add the details of this server now
838 // to the servers tree, as a child of the root
840 TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this,x->Hidden);
841 Utils->TreeRoot->AddChild(Node);
842 params[3] = ":" + params[3];
843 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
844 this->bursting = true;
849 this->SendError("Invalid credentials");
850 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
854 bool TreeSocket::Inbound_Server(std::deque<std::string> ¶ms)
856 if (params.size() < 4)
858 irc::string servername = params[0].c_str();
859 std::string sname = params[0];
860 std::string password = params[1];
861 std::string description = params[3];
862 int hops = atoi(params[2].c_str());
864 this->InboundServerName = sname;
865 this->InboundDescription = description;
868 this->SendCapabilities();
872 this->SendError("Server too far away for authentication");
873 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
877 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
879 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty()))))
881 /* First check for instances of the server that are waiting between the inbound and outbound SERVER command */
882 TreeSocket* CheckDupeSocket = Utils->FindBurstingServer(sname);
885 /* If we find one, we abort the link to prevent a race condition */
886 this->SendError("Negotiation collision");
887 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists in a negotiating state.");
888 CheckDupeSocket->SendError("Negotiation collision");
889 Instance->SE->DelFd(CheckDupeSocket);
890 CheckDupeSocket->Close();
893 /* Now check for fully initialized instances of the server */
894 TreeServer* CheckDupe = Utils->FindServer(sname);
897 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
898 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
901 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
904 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
905 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
908 Utils->AddBurstingServer(sname,this);
910 // this is good. Send our details: Our server name and description and hopcount of 0,
911 // along with the sendpass from this block.
912 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 :"+this->Instance->Config->ServerDesc);
913 // move to the next state, we are now waiting for THEM.
914 this->LinkState = WAIT_AUTH_2;
918 this->SendError("Invalid credentials");
919 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
923 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
926 irc::tokenstream tokens(line);
928 while (tokens.GetToken(param))
936 bool TreeSocket::ProcessLine(std::string &line)
938 std::deque<std::string> params;
942 line = line.substr(0, line.find_first_of("\r\n"));
947 Instance->Log(DEBUG, "S[%d] <- %s", this->GetFd(), line.c_str());
949 this->Split(line.c_str(),params);
954 if ((params[0][0] == ':') && (params.size() > 1))
956 prefix = params[0].substr(1);
959 command = params[0].c_str();
961 switch (this->LinkState)
966 // Waiting for SERVER command from remote server. Server initiating
967 // the connection sends the first SERVER command, listening server
968 // replies with theirs if its happy, then if the initiator is happy,
969 // it starts to send its net sync, which starts the merge, otherwise
970 // it sends an ERROR.
971 if (command == "PASS")
973 /* Silently ignored */
975 else if (command == "SERVER")
977 return this->Inbound_Server(params);
979 else if (command == "ERROR")
981 return this->Error(params);
983 else if (command == "USER")
985 this->SendError("Client connections to this port are prohibited.");
988 else if (command == "CAPAB")
990 return this->Capab(params);
992 else if ((command == "U") || (command == "S"))
994 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
999 irc::string error = "Invalid command in negotiation phase: " + command;
1000 this->SendError(assign(error));
1005 // Waiting for start of other side's netmerge to say they liked our
1007 if (command == "SERVER")
1009 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1013 else if ((command == "U") || (command == "S"))
1015 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1018 else if (command == "BURST")
1020 if (params.size() && Utils->EnableTimeSync)
1022 bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
1023 time_t them = atoi(params[0].c_str());
1024 time_t delta = them - Instance->Time(false);
1025 if ((delta < -600) || (delta > 600))
1027 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));
1028 SendError("Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than five minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1031 else if ((delta < -30) || (delta > 30))
1033 Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs(delta));
1036 if (!Utils->MasterTime && !we_have_delta)
1038 this->Instance->SetTimeDelta(delta);
1039 // Send this new timestamp to any other servers
1040 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
1043 this->LinkState = CONNECTED;
1044 Link* lnk = Utils->FindLink(InboundServerName);
1045 Node = new TreeServer(this->Utils,this->Instance, InboundServerName, InboundDescription, Utils->TreeRoot, this, lnk ? lnk->Hidden : false);
1046 Utils->DelBurstingServer(this);
1047 Utils->TreeRoot->AddChild(Node);
1049 params.push_back(InboundServerName);
1050 params.push_back("*");
1051 params.push_back("1");
1052 params.push_back(":"+InboundDescription);
1053 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1054 this->bursting = true;
1055 this->DoBurst(Node);
1057 else if (command == "ERROR")
1059 return this->Error(params);
1061 else if (command == "CAPAB")
1063 return this->Capab(params);
1068 this->SendError("Internal error -- listening socket accepted its own descriptor!!!");
1072 if (command == "SERVER")
1074 // another server we connected to, which was in WAIT_AUTH_1 state,
1075 // has just sent us their credentials. If we get this far, theyre
1076 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1077 // if we're happy with this, we should send our netburst which
1078 // kickstarts the merge.
1079 return this->Outbound_Reply_Server(params);
1081 else if (command == "ERROR")
1083 return this->Error(params);
1085 else if (command == "CAPAB")
1087 return this->Capab(params);
1091 // This is the 'authenticated' state, when all passwords
1092 // have been exchanged and anything past this point is taken
1095 if (!prefix.empty())
1097 std::string direction = prefix;
1098 userrec* t = this->Instance->FindNick(prefix);
1101 direction = t->server;
1103 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1104 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1106 if (route_back_again)
1107 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1111 * When there is activity on the socket, reset the ping counter so
1112 * that we're not wasting bandwidth pinging an active server.
1114 route_back_again->SetNextPingTime(time(NULL) + Utils->PingFreq);
1115 route_back_again->SetPingFlag();
1119 prefix = this->GetName();
1122 if ((command == "MODE") && (params.size() >= 2))
1124 chanrec* channel = Instance->FindChan(params[0]);
1127 userrec* x = Instance->FindNick(prefix);
1130 if (warned.find(x->server) == warned.end())
1132 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);
1133 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());
1134 warned[x->server] = x->nick;
1140 if (command == "SVSMODE")
1142 /* Services expects us to implement
1143 * SVSMODE. In inspircd its the same as
1149 /* Yes, know, this is a mess. Its reasonably fast though as we're
1150 * working with std::string here.
1152 if ((command == "NICK") && (params.size() >= 8))
1154 return this->IntroduceClient(prefix,params);
1156 else if (command == "FJOIN")
1158 TreeServer* ServerSource = Utils->FindServer(prefix);
1160 Utils->SetRemoteBursting(ServerSource, false);
1161 return this->ForceJoin(prefix,params);
1163 else if (command == "STATS")
1165 return this->Stats(prefix, params);
1167 else if (command == "MOTD")
1169 return this->Motd(prefix, params);
1171 else if (command == "KILL" && Utils->IsServer(prefix))
1173 return this->RemoteKill(prefix,params);
1175 else if (command == "MODULES")
1177 return this->Modules(prefix, params);
1179 else if (command == "ADMIN")
1181 return this->Admin(prefix, params);
1183 else if (command == "SERVER")
1185 return this->RemoteServer(prefix,params);
1187 else if (command == "ERROR")
1189 return this->Error(params);
1191 else if (command == "OPERTYPE")
1193 return this->OperType(prefix,params);
1195 else if (command == "FMODE")
1197 TreeServer* ServerSource = Utils->FindServer(prefix);
1199 Utils->SetRemoteBursting(ServerSource, false);
1200 return this->ForceMode(prefix,params);
1202 else if (command == "FTOPIC")
1204 return this->ForceTopic(prefix,params);
1206 else if (command == "REHASH")
1208 return this->RemoteRehash(prefix,params);
1210 else if (command == "METADATA")
1212 return this->MetaData(prefix,params);
1214 else if (command == "REMSTATUS")
1216 return this->RemoveStatus(prefix,params);
1218 else if (command == "PING")
1221 prefix = this->GetName();
1223 * We just got a ping from a server that's bursting.
1224 * This can't be right, so set them to not bursting, and
1225 * apply their lines.
1227 TreeServer* ServerSource = Utils->FindServer(prefix);
1229 Utils->SetRemoteBursting(ServerSource, false);
1233 this->bursting = false;
1234 Instance->XLines->apply_lines(Utils->lines_to_apply);
1235 Utils->lines_to_apply = 0;
1238 return this->LocalPing(prefix,params);
1240 else if (command == "PONG")
1243 prefix = this->GetName();
1245 * We just got a pong from a server that's bursting.
1246 * This can't be right, so set them to not bursting, and
1247 * apply their lines.
1249 TreeServer* ServerSource = Utils->FindServer(prefix);
1251 Utils->SetRemoteBursting(ServerSource, false);
1255 this->bursting = false;
1256 Instance->XLines->apply_lines(Utils->lines_to_apply);
1257 Utils->lines_to_apply = 0;
1260 return this->LocalPong(prefix,params);
1262 else if (command == "VERSION")
1264 return this->ServerVersion(prefix,params);
1266 else if (command == "FHOST")
1268 return this->ChangeHost(prefix,params);
1270 else if (command == "FNAME")
1272 return this->ChangeName(prefix,params);
1274 else if (command == "ADDLINE")
1276 TreeServer* ServerSource = Utils->FindServer(prefix);
1278 Utils->SetRemoteBursting(ServerSource, false);
1279 return this->AddLine(prefix,params);
1281 else if (command == "SVSNICK")
1285 prefix = this->GetName();
1287 return this->ForceNick(prefix,params);
1289 else if (command == "OPERQUIT")
1291 return this->OperQuit(prefix,params);
1293 else if (command == "IDLE")
1295 return this->Whois(prefix,params);
1297 else if (command == "PUSH")
1299 return this->Push(prefix,params);
1301 else if (command == "TIMESET")
1303 return this->HandleSetTime(prefix, params);
1305 else if (command == "TIME")
1307 return this->Time(prefix,params);
1309 else if ((command == "KICK") && (Utils->IsServer(prefix)))
1311 std::string sourceserv = this->myhost;
1312 if (params.size() == 3)
1314 userrec* user = this->Instance->FindNick(params[1]);
1315 chanrec* chan = this->Instance->FindChan(params[0]);
1318 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1319 /* Yikes, the channels gone! */
1323 if (!this->InboundServerName.empty())
1325 sourceserv = this->InboundServerName;
1327 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1329 else if (command == "SVSJOIN")
1333 prefix = this->GetName();
1335 return this->ServiceJoin(prefix,params);
1337 else if (command == "SQUIT")
1339 if (params.size() == 2)
1341 this->Squit(Utils->FindServer(params[0]),params[1]);
1345 else if (command == "OPERNOTICE")
1347 std::string sourceserv = this->myhost;
1348 if (!this->InboundServerName.empty())
1349 sourceserv = this->InboundServerName;
1350 if (params.size() >= 1)
1351 Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1352 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1354 else if (command == "MODENOTICE")
1356 std::string sourceserv = this->myhost;
1357 if (!this->InboundServerName.empty())
1358 sourceserv = this->InboundServerName;
1359 if (params.size() >= 2)
1361 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1363 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1365 else if (command == "SNONOTICE")
1367 std::string sourceserv = this->myhost;
1368 if (!this->InboundServerName.empty())
1369 sourceserv = this->InboundServerName;
1370 if (params.size() >= 2)
1372 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1374 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1376 else if (command == "ENDBURST")
1378 this->bursting = false;
1379 Instance->XLines->apply_lines(Utils->lines_to_apply);
1380 Utils->lines_to_apply = 0;
1381 std::string sourceserv = this->myhost;
1382 if (!this->InboundServerName.empty())
1383 sourceserv = this->InboundServerName;
1384 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1386 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1387 rmode.Send(Instance);
1393 // not a special inter-server command.
1394 // Emulate the actual user doing the command,
1395 // this saves us having a huge ugly parser.
1396 userrec* who = this->Instance->FindNick(prefix);
1397 std::string sourceserv = this->myhost;
1398 if (!this->InboundServerName.empty())
1400 sourceserv = this->InboundServerName;
1402 if ((!who) && (command == "MODE"))
1404 if (Utils->IsServer(prefix))
1406 const char* modelist[MAXPARAMETERS];
1407 for (size_t i = 0; i < params.size(); i++)
1408 modelist[i] = params[i].c_str();
1409 userrec* fake = new userrec(Instance);
1410 fake->SetFd(FD_MAGIC_NUMBER);
1411 this->Instance->SendMode(modelist, params.size(), fake);
1414 /* Hot potato! pass it on! */
1415 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1420 if ((command == "NICK") && (params.size() > 0))
1422 /* On nick messages, check that the nick doesnt
1423 * already exist here. If it does, kill their copy,
1426 userrec* x = this->Instance->FindNick(params[0]);
1427 if ((x) && (x != who))
1429 std::deque<std::string> p;
1430 p.push_back(params[0]);
1431 p.push_back(":Nickname collision ("+prefix+" -> "+params[0]+")");
1432 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1434 p.push_back(prefix);
1435 p.push_back(":Nickname collision");
1436 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1437 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1438 userrec* y = this->Instance->FindNick(prefix);
1441 userrec::QuitUser(this->Instance,y,"Nickname collision");
1443 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1447 target = who->server;
1448 const char* strparams[127];
1449 for (unsigned int q = 0; q < params.size(); q++)
1451 strparams[q] = params[q].c_str();
1453 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1456 this->SendError("Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1463 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1469 // its not a user. Its either a server, or somethings screwed up.
1470 if (Utils->IsServer(prefix))
1471 target = this->Instance->Config->ServerName;
1475 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1484 std::string TreeSocket::GetName()
1486 std::string sourceserv = this->myhost;
1487 if (!this->InboundServerName.empty())
1489 sourceserv = this->InboundServerName;
1494 void TreeSocket::OnTimeout()
1496 if (this->LinkState == CONNECTING)
1498 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
1499 Link* MyLink = Utils->FindLink(myhost);
1501 Utils->DoFailOver(MyLink);
1505 void TreeSocket::OnClose()
1507 if (this->LinkState == LISTENER)
1510 // Connection closed.
1511 // If the connection is fully up (state CONNECTED)
1512 // then propogate a netsplit to all peers.
1513 std::string quitserver = this->myhost;
1514 if (!this->InboundServerName.empty())
1516 quitserver = this->InboundServerName;
1518 TreeServer* s = Utils->FindServer(quitserver);
1521 Squit(s,"Remote host closed the connection");
1524 if (!quitserver.empty())
1526 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
1527 time_t server_uptime = Instance->Time() - this->age;
1529 Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' was established for %s", quitserver.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str());
1533 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1535 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1536 * or discovering if this port is the server port, we don't allow connections from any
1537 * IPs for which we don't have a link block.
1541 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1544 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1545 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1550 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
1556 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1557 s = s; /* Whinge whinge whinge, thats all GCC ever does. */