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 "commands/cmd_whois.h"
16 #include "commands/cmd_stats.h"
20 #include "transport.h"
21 #include "socketengine.h"
23 #include "m_spanningtree/main.h"
24 #include "m_spanningtree/utils.h"
25 #include "m_spanningtree/treeserver.h"
26 #include "m_spanningtree/link.h"
27 #include "m_spanningtree/treesocket.h"
28 #include "m_spanningtree/resolvers.h"
29 #include "m_spanningtree/handshaketimer.h"
31 /* $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 */
33 static std::map<std::string, std::string> warned; /* Server names that have had protocol violation warnings displayed for them */
35 int TreeSocket::WriteLine(std::string line)
37 Instance->Log(DEBUG, "S[%d] O %s", this->GetFd(), line.c_str());
39 return this->Write(line);
43 /* Handle ERROR command */
44 bool TreeSocket::Error(std::deque<std::string> ¶ms)
46 if (params.size() < 1)
48 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(!InboundServerName.empty() ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
49 /* we will return false to cause the socket to close. */
53 bool TreeSocket::Modules(const std::string &prefix, std::deque<std::string> ¶ms)
58 if (!this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
60 /* Pass it on, not for us */
61 Utils->DoOneToOne(prefix, "MODULES", params, params[0]);
66 std::deque<std::string> par;
67 par.push_back(prefix);
70 User* source = this->Instance->FindNick(prefix);
74 for (unsigned int i = 0; i < Instance->Config->module_names.size(); i++)
76 Version V = Instance->Modules->modules[i]->GetVersion();
77 char modulename[MAXBUF];
78 char flagstate[MAXBUF];
80 if (V.Flags & VF_STATIC)
81 strlcat(flagstate,", static",MAXBUF);
82 if (V.Flags & VF_VENDOR)
83 strlcat(flagstate,", vendor",MAXBUF);
84 if (V.Flags & VF_COMMON)
85 strlcat(flagstate,", common",MAXBUF);
86 if (V.Flags & VF_SERVICEPROVIDER)
87 strlcat(flagstate,", service provider",MAXBUF);
89 strcpy(flagstate," <no flags>");
90 strlcpy(modulename,Instance->Config->module_names[i].c_str(),256);
93 snprintf(strbuf, MAXBUF, "::%s 900 %s :0x%08lx %d.%d.%d.%d %s (%s)",Instance->Config->ServerName,source->nick,(long unsigned int)Instance->Modules->modules[i],V.Major,V.Minor,V.Revision,V.Build,ServerConfig::CleanFilename(modulename),flagstate+2);
97 snprintf(strbuf, MAXBUF, "::%s 900 %s :%s",Instance->Config->ServerName,source->nick,ServerConfig::CleanFilename(modulename));
100 Utils->DoOneToOne(Instance->Config->GetSID(), "PUSH", par, source->server);
102 snprintf(strbuf, MAXBUF, "::%s 901 %s :End of MODULES list", Instance->Config->ServerName, source->nick);
104 Utils->DoOneToOne(Instance->Config->GetSID(), "PUSH", par, source->server);
108 /** remote MOTD. leet, huh? */
109 bool TreeSocket::Motd(const std::string &prefix, std::deque<std::string> ¶ms)
111 if (params.size() > 0)
113 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
115 /* It's for our server */
117 User* source = this->Instance->FindNick(prefix);
121 std::deque<std::string> par;
122 par.push_back(prefix);
125 if (!Instance->Config->MOTD.size())
127 par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
128 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
132 par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
133 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
135 for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
137 par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
138 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
141 par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" :End of message of the day.";
142 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
148 User* source = this->Instance->FindNick(prefix);
150 Utils->DoOneToOne(prefix, "MOTD", params, params[0]);
156 /** remote ADMIN. leet, huh? */
157 bool TreeSocket::Admin(const std::string &prefix, std::deque<std::string> ¶ms)
159 if (params.size() > 0)
161 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
163 /* It's for our server */
165 User* source = this->Instance->FindNick(prefix);
168 std::deque<std::string> par;
169 par.push_back(prefix);
171 par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
172 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
173 par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName;
174 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
175 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
176 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
177 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail;
178 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
184 User* source = this->Instance->FindNick(prefix);
186 Utils->DoOneToOne(prefix, "ADMIN", params, params[0]);
192 bool TreeSocket::Stats(const std::string &prefix, std::deque<std::string> ¶ms)
194 /* Get the reply to a STATS query if it matches this servername,
195 * and send it back as a load of PUSH queries
197 if (params.size() > 1)
199 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
201 /* It's for our server */
203 User* source = this->Instance->FindNick(prefix);
206 std::deque<std::string> par;
207 par.push_back(prefix);
209 DoStats(this->Instance, *(params[0].c_str()), source, results);
210 for (size_t i = 0; i < results.size(); i++)
212 par[1] = "::" + results[i];
213 Utils->DoOneToOne(this->Instance->Config->GetSID(), "PUSH",par, source->server);
220 User* source = this->Instance->FindNick(prefix);
222 Utils->DoOneToOne(source->uuid, "STATS", params, params[1]);
229 /** Because the core won't let users or even SERVERS set +o,
230 * we use the OPERTYPE command to do this.
232 bool TreeSocket::OperType(const std::string &prefix, std::deque<std::string> ¶ms)
234 if (params.size() != 1)
236 std::string opertype = params[0];
237 User* u = this->Instance->FindNick(prefix);
240 if (!u->IsModeSet('o'))
241 this->Instance->all_opers.push_back(u);
242 u->modes[UM_OPERATOR] = 1;
243 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
244 Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
246 TreeServer* remoteserver = Utils->FindServer(u->server);
249 if (this->Utils->quiet_bursts)
252 * If quiet bursts are enabled, and server is bursting or silent uline (i.e. services),
253 * then do nothing. -- w00t
257 Utils->FindRemoteBurstServer(remoteserver) ||
258 this->Instance->SilentULine(this->Instance->FindServerNamePtr(u->server))
266 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()));
271 /** Because Andy insists that services-compatible servers must
272 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
274 bool TreeSocket::ForceNick(const std::string &prefix, std::deque<std::string> ¶ms)
276 if (params.size() < 3)
279 User* u = this->Instance->FindNick(params[0]);
283 Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
287 std::deque<std::string> par;
288 par.push_back(params[1]);
290 if (!u->ForceNickChange(params[1].c_str()))
293 if (!u->ForceNickChange(u->uuid))
295 User::QuitUser(this->Instance, u, "Nickname collision");
300 u->age = atoi(params[2].c_str());
307 bool TreeSocket::OperQuit(const std::string &prefix, std::deque<std::string> ¶ms)
309 if (params.size() < 1)
312 User* u = this->Instance->FindNick(prefix);
316 u->SetOperQuit(params[0]);
317 params[0] = ":" + params[0];
318 Utils->DoOneToAllButSender(prefix,"OPERQUIT",params,prefix);
323 bool TreeSocket::ServiceJoin(const std::string &prefix, std::deque<std::string> ¶ms)
325 if (params.size() < 2)
328 if (!this->Instance->IsChannel(params[1].c_str()))
331 User* u = this->Instance->FindNick(params[0]);
335 /* only join if it's local, otherwise just pass it on! */
337 Channel::JoinUser(this->Instance, u, params[1].c_str(), false, "", Instance->Time());
338 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
343 bool TreeSocket::ServicePart(const std::string &prefix, std::deque<std::string> ¶ms)
345 if (params.size() < 2)
348 if (!this->Instance->IsChannel(params[1].c_str()))
351 User* u = this->Instance->FindNick(params[0]);
352 Channel* c = this->Instance->FindChan(params[1]);
356 /* only part if it's local, otherwise just pass it on! */
358 if (!c->PartUser(u, "Services forced part"))
360 Utils->DoOneToAllButSender(prefix,"SVSPART",params,prefix);
366 bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque<std::string> ¶ms)
368 if (params.size() < 1)
371 std::string servermask = params[0];
373 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
375 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
376 this->Instance->RehashServer();
377 Utils->ReadConfiguration(false);
378 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
380 Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
384 bool TreeSocket::RemoteKill(const std::string &prefix, std::deque<std::string> ¶ms)
386 if (params.size() != 2)
389 User* who = this->Instance->FindNick(params[0]);
393 /* Prepend kill source, if we don't have one */
394 if (*(params[1].c_str()) != '[')
396 params[1] = "[" + prefix + "] Killed (" + params[1] +")";
398 std::string reason = params[1];
399 params[1] = ":" + params[1];
400 Utils->DoOneToAllButSender(prefix,"KILL",params,prefix);
401 // NOTE: This is safe with kill hiding on, as RemoteKill is only reached if we have a server prefix.
402 // in short this is not executed for USERS.
403 who->Write(":%s KILL %s :%s (%s)", prefix.c_str(), who->nick, prefix.c_str(), reason.c_str());
404 User::QuitUser(this->Instance,who,reason);
409 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
411 if (params.size() < 1)
414 if (params.size() == 1)
416 TreeServer* ServerSource = Utils->FindServer(prefix);
419 ServerSource->SetPingFlag();
421 gettimeofday(&t, NULL);
422 long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
423 ServerSource->rtt = ts - ServerSource->LastPingMsec;
428 std::string forwardto = params[1];
429 if (forwardto == Instance->Config->GetSID() || forwardto == Instance->Config->ServerName)
432 * this is a PONG for us
433 * if the prefix is a user, check theyre local, and if they are,
434 * dump the PONG reply back to their fd. If its a server, do nowt.
435 * Services might want to send these s->s, but we dont need to yet.
437 User* u = this->Instance->FindNick(prefix);
440 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
445 // not for us, pass it on :)
446 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
453 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
455 if (params.size() < 2)
457 else if (params.size() < 3)
458 params.push_back("");
459 TreeServer* ServerSource = Utils->FindServer(prefix);
462 Utils->SetRemoteBursting(ServerSource, false);
464 if (params[0] == "*")
466 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
468 else if (*(params[0].c_str()) == '#')
470 Channel* c = this->Instance->FindChan(params[0]);
473 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
476 else if (*(params[0].c_str()) != '#')
478 User* u = this->Instance->FindNick(params[0]);
481 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
486 params[2] = ":" + params[2];
487 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
491 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
493 if (params.size() < 1)
496 TreeServer* ServerSource = Utils->FindServer(prefix);
500 ServerSource->SetVersion(params[0]);
502 params[0] = ":" + params[0];
503 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
507 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
509 if (params.size() < 1)
511 User* u = this->Instance->FindNick(prefix);
515 u->ChangeDisplayedHost(params[0].c_str());
516 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
521 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
523 if (params.size() < 6)
526 XLineFactory* xlf = Instance->XLines->GetFactory(params[0][0]);
531 XLine* xl = xlf->Generate(Instance->Time(), atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
532 xl->SetCreateTime(atoi(params[3].c_str()));
533 if (Instance->XLines->AddLine(xl,NULL))
537 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(xl->expiry).c_str(),params[5].c_str());
541 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());
543 params[5] = ":" + params[5];
544 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
551 Instance->XLines->ApplyLines();
557 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
559 if (params.size() < 1)
561 User* u = this->Instance->FindNick(prefix);
564 u->ChangeName(params[0].c_str());
565 params[0] = ":" + params[0];
566 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
571 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> ¶ms)
573 if (params.size() < 1)
575 User* u = this->Instance->FindNick(prefix);
578 // an incoming request
579 if (params.size() == 1)
581 User* x = this->Instance->FindNick(params[0]);
582 if ((x) && (IS_LOCAL(x)))
584 User* x = this->Instance->FindNick(params[0]);
587 snprintf(signon, MAXBUF, "%lu", (unsigned long)x->signon);
588 snprintf(idle, MAXBUF, "%lu", (unsigned long)abs((x->idle_lastmsg) - Instance->Time(true)));
589 std::deque<std::string> par;
590 par.push_back(prefix);
591 par.push_back(signon);
593 // ours, we're done, pass it BACK
594 Utils->DoOneToOne(params[0], "IDLE", par, u->server);
598 // not ours pass it on
600 Utils->DoOneToOne(prefix, "IDLE", params, x->server);
603 else if (params.size() == 3)
605 std::string who_did_the_whois = params[0];
606 User* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
607 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
609 // an incoming reply to a whois we sent out
610 std::string nick_whoised = prefix;
611 unsigned long signon = atoi(params[1].c_str());
612 unsigned long idle = atoi(params[2].c_str());
613 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
615 do_whois(this->Instance, who_to_send_to, u, signon, idle, nick_whoised.c_str());
620 // not ours, pass it on
622 Utils->DoOneToOne(prefix, "IDLE", params, who_to_send_to->server);
629 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> ¶ms)
631 if (params.size() < 2)
633 User* u = this->Instance->FindNick(params[0]);
642 // continue the raw onwards
643 params[1] = ":" + params[1];
644 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
649 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
651 if (!params.size() || !Utils->EnableTimeSync)
656 if ((params.size() == 2) && (params[1] == "FORCE"))
659 time_t them = atoi(params[0].c_str());
660 time_t us = Instance->Time(false);
662 time_t diff = them - us;
664 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
666 if (force || (them != us))
668 time_t old = Instance->SetTimeDelta(diff);
669 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
675 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> ¶ms)
677 // :source.server TIME remote.server sendernick
678 // :remote.server TIME source.server sendernick TS
679 if (params.size() == 2)
681 // someone querying our time?
682 if (this->Instance->Config->ServerName == params[0] || this->Instance->Config->GetSID() == params[0])
684 User* u = this->Instance->FindNick(params[1]);
687 params.push_back(ConvToStr(Instance->Time(false)));
689 Utils->DoOneToOne(this->Instance->Config->GetSID(),"TIME",params,params[0]);
694 // not us, pass it on
695 User* u = this->Instance->FindNick(params[1]);
697 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
700 else if (params.size() == 3)
702 // a response to a previous TIME
703 User* u = this->Instance->FindNick(params[1]);
704 if ((u) && (IS_LOCAL(u)))
706 time_t rawtime = atol(params[2].c_str());
707 struct tm * timeinfo;
708 timeinfo = localtime(&rawtime);
710 snprintf(tms,26,"%s",asctime(timeinfo));
712 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
717 Utils->DoOneToOne(prefix,"TIME",params,u->server);
723 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
725 if (params.size() < 1)
727 if (params.size() == 1)
729 std::string stufftobounce = params[0];
730 this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" PONG "+stufftobounce);
735 std::string forwardto = params[1];
736 if (forwardto == this->Instance->Config->ServerName || forwardto == this->Instance->Config->GetSID())
738 // this is a ping for us, send back PONG to the requesting server
739 params[1] = params[0];
740 params[0] = forwardto;
741 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
745 // not for us, pass it on :)
746 Utils->DoOneToOne(prefix,"PING",params,forwardto);
752 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
754 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
756 if (params.size() < 1)
758 Channel* c = Instance->FindChan(params[0]);
761 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
763 ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
771 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
773 if (params.size() < 5)
775 SendError("Protocol error - Missing SID");
779 std::string servername = params[0];
780 std::string password = params[1];
781 // hopcount is not used for a remote server, we calculate this ourselves
782 std::string sid = params[3];
783 std::string description = params[4];
784 TreeServer* ParentOfThis = Utils->FindServer(prefix);
787 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
790 if (!Utils->IsSID(sid))
792 this->SendError("Invalid format server ID: "+sid+"!");
795 TreeServer* CheckDupe = Utils->FindServer(servername);
798 this->SendError("Server "+servername+" already exists!");
799 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix);
803 Link* lnk = Utils->FindLink(servername);
805 TreeServer *Node = new TreeServer(this->Utils, this->Instance, servername, description, sid, ParentOfThis,NULL, lnk ? lnk->Hidden : false);
807 if (Node->DuplicateID())
809 this->SendError("Server ID "+sid+" already exists on the network!");
810 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, server ID already exists on the network. Closing link with " + prefix);
814 ParentOfThis->AddChild(Node);
815 params[4] = ":" + params[4];
816 Utils->SetRemoteBursting(Node, true);
817 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
818 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
822 bool TreeSocket::ComparePass(const std::string &ours, const std::string &theirs)
824 if ((!strncmp(ours.c_str(), "HMAC-SHA256:", 12)) || (!strncmp(theirs.c_str(), "HMAC-SHA256:", 12)))
826 /* One or both of us specified hmac sha256, but we don't have sha256 module loaded!
827 * We can't allow this password as valid.
829 if (!Instance->Modules->Find("m_sha256.so") || !Utils->ChallengeResponse)
832 /* Straight string compare of hashes */
833 return ours == theirs;
836 /* Straight string compare of plaintext */
837 return ours == theirs;
840 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> ¶ms)
842 if (params.size() < 5)
844 SendError("Protocol error - Missing SID");
848 irc::string servername = params[0].c_str();
849 std::string sname = params[0];
850 std::string password = params[1];
851 std::string sid = params[3];
852 std::string description = params[4];
853 int hops = atoi(params[2].c_str());
855 this->InboundServerName = sname;
856 this->InboundDescription = description;
857 this->InboundSID = sid;
860 this->SendCapabilities();
864 this->SendError("Server too far away for authentication");
865 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
869 if (!Utils->IsSID(sid))
871 this->SendError("Invalid format server ID: "+sid+"!");
875 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
877 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty()))))
879 TreeServer* CheckDupe = Utils->FindServer(sname);
882 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
883 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
886 // Begin the sync here. this kickstarts the
887 // other side, waiting in WAIT_AUTH_2 state,
888 // into starting their burst, as it shows
890 this->LinkState = CONNECTED;
891 // we should add the details of this server now
892 // to the servers tree, as a child of the root
895 TreeServer *Node = new TreeServer(this->Utils, this->Instance, sname, description, sid, Utils->TreeRoot, this, x->Hidden);
897 if (Node->DuplicateID())
899 this->SendError("Server ID "+sid+" already exists on the network!");
900 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+assign(servername)+"\2 being introduced denied, server ID already exists on the network. Closing link.");
904 Utils->TreeRoot->AddChild(Node);
905 params[4] = ":" + params[4];
906 Utils->DoOneToAllButSender(Instance->Config->GetSID(),"SERVER",params,sname);
907 this->bursting = true;
912 this->SendError("Invalid credentials");
913 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
917 bool TreeSocket::Inbound_Server(std::deque<std::string> ¶ms)
919 if (params.size() < 5)
921 SendError("Protocol error - Missing SID");
925 irc::string servername = params[0].c_str();
926 std::string sname = params[0];
927 std::string password = params[1];
928 std::string sid = params[3];
929 std::string description = params[4];
930 int hops = atoi(params[2].c_str());
932 this->InboundServerName = sname;
933 this->InboundDescription = description;
934 this->InboundSID = sid;
937 this->SendCapabilities();
941 this->SendError("Server too far away for authentication");
942 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
946 if (!Utils->IsSID(sid))
948 this->SendError("Invalid format server ID: "+sid+"!");
952 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
954 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty()))))
956 /* First check for instances of the server that are waiting between the inbound and outbound SERVER command */
957 TreeSocket* CheckDupeSocket = Utils->FindBurstingServer(sname);
960 /* If we find one, we abort the link to prevent a race condition */
961 this->SendError("Negotiation collision");
962 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists in a negotiating state.");
963 CheckDupeSocket->SendError("Negotiation collision");
964 Instance->SE->DelFd(CheckDupeSocket);
965 CheckDupeSocket->Close();
968 /* Check for fully initialized instances of the server by id */
969 Instance->Log(DEBUG,"Looking for dupe SID %s", sid.c_str());
970 TreeServer* CheckDupeSID = Utils->FindServerID(sid);
973 this->SendError("Server ID "+CheckDupeSID->GetID()+" already exists on server "+CheckDupeSID->GetName()+"!");
974 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server ID '"+CheckDupeSID->GetID()+
975 "' already exists on server "+CheckDupeSID->GetName());
978 /* Now check for fully initialized instances of the server by name */
979 TreeServer* CheckDupe = Utils->FindServer(sname);
982 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
983 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
986 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
989 std::string name = BufferedSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
990 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
993 Utils->AddBurstingServer(sname,this);
995 // this is good. Send our details: Our server name and description and hopcount of 0,
996 // along with the sendpass from this block.
997 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 "+Instance->Config->GetSID()+" :"+this->Instance->Config->ServerDesc);
998 // move to the next state, we are now waiting for THEM.
999 this->LinkState = WAIT_AUTH_2;
1003 this->SendError("Invalid credentials");
1004 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
1008 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
1011 irc::tokenstream tokens(line);
1013 while (tokens.GetToken(param))
1020 bool TreeSocket::ProcessLine(std::string &line)
1022 std::deque<std::string> params;
1023 irc::string command;
1026 line = line.substr(0, line.find_first_of("\r\n"));
1031 Instance->Log(DEBUG, "S[%d] I %s", this->GetFd(), line.c_str());
1033 this->Split(line.c_str(),params);
1038 if ((params[0][0] == ':') && (params.size() > 1))
1040 prefix = params[0].substr(1);
1043 command = params[0].c_str();
1045 switch (this->LinkState)
1050 // Waiting for SERVER command from remote server. Server initiating
1051 // the connection sends the first SERVER command, listening server
1052 // replies with theirs if its happy, then if the initiator is happy,
1053 // it starts to send its net sync, which starts the merge, otherwise
1054 // it sends an ERROR.
1055 if (command == "PASS")
1057 /* Silently ignored */
1059 else if (command == "SERVER")
1061 return this->Inbound_Server(params);
1063 else if (command == "ERROR")
1065 return this->Error(params);
1067 else if (command == "USER")
1069 this->SendError("Client connections to this port are prohibited.");
1072 else if (command == "CAPAB")
1074 return this->Capab(params);
1078 irc::string error = "Invalid command in negotiation phase: " + command;
1079 this->SendError(assign(error));
1084 // Waiting for start of other side's netmerge to say they liked our
1086 if (command == "SERVER")
1088 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1092 else if (command == "BURST")
1094 if (params.size() && Utils->EnableTimeSync)
1096 bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
1097 time_t them = atoi(params[0].c_str());
1098 time_t delta = them - Instance->Time(false);
1099 if ((delta < -600) || (delta > 600))
1101 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));
1102 SendError("Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than five minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1105 else if ((delta < -30) || (delta > 30))
1107 Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs(delta));
1110 if (!Utils->MasterTime && !we_have_delta)
1112 this->Instance->SetTimeDelta(delta);
1113 // Send this new timestamp to any other servers
1114 Utils->DoOneToMany(Instance->Config->GetSID(), "TIMESET", params);
1117 this->LinkState = CONNECTED;
1118 Link* lnk = Utils->FindLink(InboundServerName);
1120 Node = new TreeServer(this->Utils, this->Instance, InboundServerName, InboundDescription, InboundSID, Utils->TreeRoot, this, lnk ? lnk->Hidden : false);
1122 if (Node->DuplicateID())
1124 this->SendError("Server ID "+InboundSID+" already exists on the network!");
1125 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+InboundServerName+"\2 being introduced from \2" + prefix + "\2 denied, server ID already exists on the network. Closing link.");
1128 Utils->DelBurstingServer(this);
1129 Utils->TreeRoot->AddChild(Node);
1131 params.push_back(InboundServerName);
1132 params.push_back("*");
1133 params.push_back("1");
1134 params.push_back(InboundSID);
1135 params.push_back(":"+InboundDescription);
1136 Utils->DoOneToAllButSender(Instance->Config->GetSID(),"SERVER",params,InboundServerName);
1137 this->bursting = true;
1138 this->DoBurst(Node);
1140 else if (command == "ERROR")
1142 return this->Error(params);
1144 else if (command == "CAPAB")
1146 return this->Capab(params);
1151 this->SendError("Internal error -- listening socket accepted its own descriptor!!!");
1155 if (command == "SERVER")
1157 // another server we connected to, which was in WAIT_AUTH_1 state,
1158 // has just sent us their credentials. If we get this far, theyre
1159 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1160 // if we're happy with this, we should send our netburst which
1161 // kickstarts the merge.
1162 return this->Outbound_Reply_Server(params);
1164 else if (command == "ERROR")
1166 return this->Error(params);
1168 else if (command == "CAPAB")
1170 return this->Capab(params);
1174 // This is the 'authenticated' state, when all passwords
1175 // have been exchanged and anything past this point is taken
1178 if (!prefix.empty())
1180 std::string direction = prefix;
1182 User *t = this->Instance->FindUUID(prefix);
1185 direction = t->server;
1188 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1189 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1191 if (route_back_again)
1192 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1196 * When there is activity on the socket, reset the ping counter so
1197 * that we're not wasting bandwidth pinging an active server.
1199 route_back_again->SetNextPingTime(time(NULL) + Utils->PingFreq);
1200 route_back_again->SetPingFlag();
1204 TreeServer* n = Utils->FindServer(GetName());
1206 prefix = n->GetID();
1211 if ((command == "MODE") && (params.size() >= 2))
1213 Channel* channel = Instance->FindChan(params[0]);
1216 User* x = Instance->FindNick(prefix);
1219 if (warned.find(x->server) == warned.end())
1221 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);
1222 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());
1223 warned[x->server] = x->nick;
1229 if (command == "SVSMODE")
1231 /* Services expects us to implement
1232 * SVSMODE. In inspircd its the same as
1238 /* Yes, know, this is a mess. Its reasonably fast though as we're
1239 * working with std::string here.
1241 if (command == "UID")
1243 return this->ParseUID(prefix, params);
1245 else if (command == "FJOIN")
1247 TreeServer* ServerSource = Utils->FindServer(prefix);
1249 Utils->SetRemoteBursting(ServerSource, false);
1250 return this->ForceJoin(prefix,params);
1252 else if (command == "STATS")
1254 return this->Stats(prefix, params);
1256 else if (command == "MOTD")
1258 return this->Motd(prefix, params);
1260 else if (command == "KILL" && Utils->IsServer(prefix))
1262 return this->RemoteKill(prefix,params);
1264 else if (command == "MODULES")
1266 return this->Modules(prefix, params);
1268 else if (command == "ADMIN")
1270 return this->Admin(prefix, params);
1272 else if (command == "SERVER")
1274 return this->RemoteServer(prefix,params);
1276 else if (command == "ERROR")
1278 return this->Error(params);
1280 else if (command == "OPERTYPE")
1282 return this->OperType(prefix,params);
1284 else if (command == "FMODE")
1286 TreeServer* ServerSource = Utils->FindServer(prefix);
1288 Utils->SetRemoteBursting(ServerSource, false);
1289 return this->ForceMode(prefix,params);
1291 else if (command == "FTOPIC")
1293 return this->ForceTopic(prefix,params);
1295 else if (command == "REHASH")
1297 return this->RemoteRehash(prefix,params);
1299 else if (command == "METADATA")
1301 return this->MetaData(prefix,params);
1303 else if (command == "REMSTATUS")
1305 return this->RemoveStatus(prefix,params);
1307 else if (command == "PING")
1310 * We just got a ping from a server that's bursting.
1311 * This can't be right, so set them to not bursting, and
1312 * apply their lines.
1314 TreeServer* ServerSource = Utils->FindServer(prefix);
1316 Utils->SetRemoteBursting(ServerSource, false);
1320 this->bursting = false;
1321 Instance->XLines->ApplyLines();
1324 return this->LocalPing(prefix,params);
1326 else if (command == "PONG")
1329 * We just got a pong from a server that's bursting.
1330 * This can't be right, so set them to not bursting, and
1331 * apply their lines.
1333 TreeServer* ServerSource = Utils->FindServer(prefix);
1335 Utils->SetRemoteBursting(ServerSource, false);
1339 this->bursting = false;
1340 Instance->XLines->ApplyLines();
1343 return this->LocalPong(prefix,params);
1345 else if (command == "VERSION")
1347 return this->ServerVersion(prefix,params);
1349 else if (command == "FHOST")
1351 return this->ChangeHost(prefix,params);
1353 else if (command == "FNAME")
1355 return this->ChangeName(prefix,params);
1357 else if (command == "ADDLINE")
1359 TreeServer* ServerSource = Utils->FindServer(prefix);
1361 Utils->SetRemoteBursting(ServerSource, false);
1362 return this->AddLine(prefix,params);
1364 else if (command == "SVSNICK")
1366 return this->ForceNick(prefix,params);
1368 else if (command == "OPERQUIT")
1370 return this->OperQuit(prefix,params);
1372 else if (command == "IDLE")
1374 return this->Whois(prefix,params);
1376 else if (command == "PUSH")
1378 return this->Push(prefix,params);
1380 else if (command == "TIMESET")
1382 return this->HandleSetTime(prefix, params);
1384 else if (command == "TIME")
1386 return this->Time(prefix,params);
1388 else if ((command == "KICK") && (Utils->IsServer(prefix)))
1390 std::string sourceserv = this->myhost;
1391 if (params.size() == 3)
1393 User* user = this->Instance->FindNick(params[1]);
1394 Channel* chan = this->Instance->FindChan(params[0]);
1397 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1398 /* Yikes, the channels gone! */
1402 if (!this->InboundServerName.empty())
1404 sourceserv = this->InboundServerName;
1406 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1408 else if (command == "SVSJOIN")
1410 return this->ServiceJoin(prefix,params);
1412 else if (command == "SVSPART")
1414 return this->ServicePart(prefix,params);
1416 else if (command == "SQUIT")
1418 if (params.size() == 2)
1420 this->Squit(Utils->FindServer(params[0]),params[1]);
1424 else if (command == "OPERNOTICE")
1426 std::string sourceserv = this->myhost;
1427 if (!this->InboundServerName.empty())
1428 sourceserv = this->InboundServerName;
1429 if (params.size() >= 1)
1430 Instance->WriteOpers("*** From " + prefix + ": " + params[0]);
1431 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1433 else if (command == "MODENOTICE")
1435 std::string sourceserv = this->myhost;
1436 if (!this->InboundServerName.empty())
1437 sourceserv = this->InboundServerName;
1438 if (params.size() >= 2)
1440 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", prefix.c_str(), params[1].c_str());
1442 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1444 else if (command == "SNONOTICE")
1446 std::string sourceserv = this->myhost;
1447 if (!this->InboundServerName.empty())
1448 sourceserv = this->InboundServerName;
1449 if (params.size() >= 2)
1451 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + prefix + ": "+ params[1]);
1453 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1455 else if (command == "ENDBURST")
1457 this->bursting = false;
1458 Instance->XLines->ApplyLines();
1459 std::string sourceserv = this->myhost;
1460 if (!this->InboundServerName.empty())
1461 sourceserv = this->InboundServerName;
1462 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1464 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1465 rmode.Send(Instance);
1472 * Not a special s2s command. Emulate the user doing it.
1473 * This saves us having a huge ugly command parser again.
1475 User *who = this->Instance->FindUUID(prefix);
1477 std::string sourceserv = this->myhost;
1478 if (!this->InboundServerName.empty())
1480 sourceserv = this->InboundServerName;
1482 if ((!who) && (command == "MODE"))
1484 if (Utils->IsServer(prefix))
1486 const char* modelist[MAXPARAMETERS];
1487 for (size_t i = 0; i < params.size(); i++)
1488 modelist[i] = params[i].c_str();
1489 this->Instance->SendMode(modelist, params.size(), this->Instance->FakeClient);
1490 /* Hot potato! pass it on! */
1491 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1496 if (command == "NICK")
1498 if (params.size() != 2)
1500 SendError("Protocol violation: NICK message without TS - :"+std::string(who->uuid)+" NICK "+params[0]);
1503 /* Update timestamp on user when they change nicks */
1504 who->age = atoi(params[1].c_str());
1506 /* On nick messages, check that the nick doesnt
1507 * already exist here. If it does, kill their copy,
1510 User* x = this->Instance->FindNickOnly(params[0]);
1511 if ((x) && (x != who))
1514 /* x is local, who is remote */
1515 collideret = this->DoCollision(x, who->age, who->ident, who->GetIPString(), who->uuid);
1516 if (collideret != 1)
1519 * Remote client lost, or both lost,
1520 * parsing this nickchange would be
1521 * pointless, as the incoming client's
1522 * server will soon recieve SVSNICK to
1523 * change its nick to its UID. :)
1529 Old nickname collision logic..
1530 std::deque<std::string> p;
1531 p.push_back(params[0]);
1532 p.push_back(":Nickname collision ("+prefix+" -> "+params[0]+")");
1533 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1535 p.push_back(prefix);
1536 p.push_back(":Nickname collision");
1537 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1538 User::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1539 User* y = this->Instance->FindNick(prefix);
1542 User::QuitUser(this->Instance,y,"Nickname collision");
1544 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1549 target = who->server;
1550 const char* strparams[127];
1551 for (unsigned int q = 0; q < params.size(); q++)
1553 strparams[q] = params[q].c_str();
1555 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1558 this->SendError("Unrecognised or malformed command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1565 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1571 // its not a user. Its either a server, or somethings screwed up.
1572 if (Utils->IsServer(prefix))
1573 target = this->Instance->Config->GetSID();
1577 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1586 std::string TreeSocket::GetName()
1588 std::string sourceserv = this->myhost;
1589 if (!this->InboundServerName.empty())
1591 sourceserv = this->InboundServerName;
1596 void TreeSocket::OnTimeout()
1598 if (this->LinkState == CONNECTING)
1600 Utils->Creator->RemoteMessage(NULL, "CONNECT: Connection to \002%s\002 timed out.", myhost.c_str());
1601 Link* MyLink = Utils->FindLink(myhost);
1603 Utils->DoFailOver(MyLink);
1607 void TreeSocket::OnClose()
1609 if (this->LinkState == LISTENER)
1612 // Connection closed.
1613 // If the connection is fully up (state CONNECTED)
1614 // then propogate a netsplit to all peers.
1615 std::string quitserver = this->myhost;
1616 if (!this->InboundServerName.empty())
1618 quitserver = this->InboundServerName;
1620 TreeServer* s = Utils->FindServer(quitserver);
1623 Squit(s,"Remote host closed the connection");
1626 if (!quitserver.empty())
1628 Utils->Creator->RemoteMessage(NULL,"Connection to '\2%s\2' failed.",quitserver.c_str());
1629 time_t server_uptime = Instance->Time() - this->age;
1631 Utils->Creator->RemoteMessage(NULL,"Connection to '\2%s\2' was established for %s", quitserver.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str());
1635 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1637 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1638 * or discovering if this port is the server port, we don't allow connections from any
1639 * IPs for which we don't have a link block.
1643 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1646 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1647 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1652 Utils->Creator->RemoteMessage(NULL,"Server connection from %s denied (no link blocks with that IP address)", ip);
1653 Instance->SE->Close(newsock);
1658 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1659 s = s; /* Whinge whinge whinge, thats all GCC ever does. */