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 who->Write(":%s KILL %s :%s (%s)", prefix.c_str(), who->nick, prefix.c_str(), reason.c_str());
350 userrec::QuitUser(this->Instance,who,reason);
355 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
357 if (params.size() < 1)
360 if (params.size() == 1)
362 TreeServer* ServerSource = Utils->FindServer(prefix);
365 ServerSource->SetPingFlag();
366 ServerSource->rtt = Instance->Time() - ServerSource->LastPing;
371 std::string forwardto = params[1];
372 if (forwardto == this->Instance->Config->ServerName)
375 * this is a PONG for us
376 * if the prefix is a user, check theyre local, and if they are,
377 * dump the PONG reply back to their fd. If its a server, do nowt.
378 * Services might want to send these s->s, but we dont need to yet.
380 userrec* u = this->Instance->FindNick(prefix);
383 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
388 // not for us, pass it on :)
389 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
396 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
398 if (params.size() < 2)
400 else if (params.size() < 3)
401 params.push_back("");
402 TreeServer* ServerSource = Utils->FindServer(prefix);
405 Utils->SetRemoteBursting(ServerSource, false);
407 if (params[0] == "*")
409 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
411 else if (*(params[0].c_str()) == '#')
413 chanrec* c = this->Instance->FindChan(params[0]);
416 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
419 else if (*(params[0].c_str()) != '#')
421 userrec* u = this->Instance->FindNick(params[0]);
424 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
429 params[2] = ":" + params[2];
430 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
434 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
436 if (params.size() < 1)
439 TreeServer* ServerSource = Utils->FindServer(prefix);
443 ServerSource->SetVersion(params[0]);
445 params[0] = ":" + params[0];
446 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
450 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
452 if (params.size() < 1)
454 userrec* u = this->Instance->FindNick(prefix);
458 u->ChangeDisplayedHost(params[0].c_str());
459 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
464 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
466 if (params.size() < 6)
468 bool propogate = false;
470 Utils->lines_to_apply = 0;
471 switch (*(params[0].c_str()))
474 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
475 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
477 Utils->lines_to_apply |= APPLY_ZLINES;
480 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
481 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
483 Utils->lines_to_apply |= APPLY_QLINES;
486 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
487 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
490 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
491 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
493 Utils->lines_to_apply |= APPLY_GLINES;
496 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
498 Utils->lines_to_apply |= APPLY_KLINES;
501 /* Just in case... */
502 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
506 /* Send it on its way */
509 if (atoi(params[4].c_str()))
511 time_t c_requires_crap = ConvToInt(params[4]) + Instance->Time();
512 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());
516 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());
518 params[5] = ":" + params[5];
519 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
523 Instance->XLines->apply_lines(Utils->lines_to_apply);
524 Utils->lines_to_apply = 0;
529 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
531 if (params.size() < 1)
533 userrec* u = this->Instance->FindNick(prefix);
536 u->ChangeName(params[0].c_str());
537 params[0] = ":" + params[0];
538 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
543 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> ¶ms)
545 if (params.size() < 1)
547 userrec* u = this->Instance->FindNick(prefix);
550 // an incoming request
551 if (params.size() == 1)
553 userrec* x = this->Instance->FindNick(params[0]);
554 if ((x) && (IS_LOCAL(x)))
556 userrec* x = this->Instance->FindNick(params[0]);
559 snprintf(signon, MAXBUF, "%lu", (unsigned long)x->signon);
560 snprintf(idle, MAXBUF, "%lu", (unsigned long)abs((x->idle_lastmsg) - Instance->Time(true)));
561 std::deque<std::string> par;
562 par.push_back(prefix);
563 par.push_back(signon);
565 // ours, we're done, pass it BACK
566 Utils->DoOneToOne(params[0], "IDLE", par, u->server);
570 // not ours pass it on
572 Utils->DoOneToOne(prefix, "IDLE", params, x->server);
575 else if (params.size() == 3)
577 std::string who_did_the_whois = params[0];
578 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
579 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
581 // an incoming reply to a whois we sent out
582 std::string nick_whoised = prefix;
583 unsigned long signon = atoi(params[1].c_str());
584 unsigned long idle = atoi(params[2].c_str());
585 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
587 do_whois(this->Instance, who_to_send_to, u, signon, idle, nick_whoised.c_str());
592 // not ours, pass it on
594 Utils->DoOneToOne(prefix, "IDLE", params, who_to_send_to->server);
601 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> ¶ms)
603 if (params.size() < 2)
605 userrec* u = this->Instance->FindNick(params[0]);
614 // continue the raw onwards
615 params[1] = ":" + params[1];
616 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
621 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
623 if (!params.size() || !Utils->EnableTimeSync)
628 if ((params.size() == 2) && (params[1] == "FORCE"))
631 time_t them = atoi(params[0].c_str());
632 time_t us = Instance->Time(false);
634 time_t diff = them - us;
636 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
638 if (force || (them != us))
640 time_t old = Instance->SetTimeDelta(diff);
641 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
647 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> ¶ms)
649 // :source.server TIME remote.server sendernick
650 // :remote.server TIME source.server sendernick TS
651 if (params.size() == 2)
653 // someone querying our time?
654 if (this->Instance->Config->ServerName == params[0])
656 userrec* u = this->Instance->FindNick(params[1]);
659 params.push_back(ConvToStr(Instance->Time(false)));
661 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
666 // not us, pass it on
667 userrec* u = this->Instance->FindNick(params[1]);
669 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
672 else if (params.size() == 3)
674 // a response to a previous TIME
675 userrec* u = this->Instance->FindNick(params[1]);
676 if ((u) && (IS_LOCAL(u)))
678 time_t rawtime = atol(params[2].c_str());
679 struct tm * timeinfo;
680 timeinfo = localtime(&rawtime);
682 snprintf(tms,26,"%s",asctime(timeinfo));
684 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
689 Utils->DoOneToOne(prefix,"TIME",params,u->server);
695 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
697 if (params.size() < 1)
699 if (params.size() == 1)
701 std::string stufftobounce = params[0];
702 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
707 std::string forwardto = params[1];
708 if (forwardto == this->Instance->Config->ServerName)
710 // this is a ping for us, send back PONG to the requesting server
711 params[1] = params[0];
712 params[0] = forwardto;
713 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
717 // not for us, pass it on :)
718 Utils->DoOneToOne(prefix,"PING",params,forwardto);
724 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
726 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
728 if (params.size() < 1)
730 chanrec* c = Instance->FindChan(params[0]);
733 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
735 ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
743 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
745 if (params.size() < 4)
747 std::string servername = params[0];
748 std::string password = params[1];
749 // hopcount is not used for a remote server, we calculate this ourselves
750 std::string description = params[3];
751 TreeServer* ParentOfThis = Utils->FindServer(prefix);
754 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
757 TreeServer* CheckDupe = Utils->FindServer(servername);
760 this->SendError("Server "+servername+" already exists!");
761 this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix);
764 Link* lnk = Utils->FindLink(servername);
765 TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL, lnk ? lnk->Hidden : false);
766 ParentOfThis->AddChild(Node);
767 params[3] = ":" + params[3];
768 Utils->SetRemoteBursting(Node, true);
769 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
770 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
774 bool TreeSocket::ComparePass(const std::string &ours, const std::string &theirs)
776 if ((!strncmp(ours.c_str(), "HMAC-SHA256:", 12)) || (!strncmp(theirs.c_str(), "HMAC-SHA256:", 12)))
778 /* One or both of us specified hmac sha256, but we don't have sha256 module loaded!
779 * We can't allow this password as valid.
781 if (!Instance->FindModule("m_sha256.so") || !Utils->ChallengeResponse)
784 /* Straight string compare of hashes */
785 return ours == theirs;
788 /* Straight string compare of plaintext */
789 return ours == theirs;
792 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> ¶ms)
794 if (params.size() < 4)
797 irc::string servername = params[0].c_str();
798 std::string sname = params[0];
799 std::string password = params[1];
800 std::string description = params[3];
801 int hops = atoi(params[2].c_str());
803 this->InboundServerName = sname;
804 this->InboundDescription = description;
807 this->SendCapabilities();
811 this->SendError("Server too far away for authentication");
812 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
816 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
818 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty()))))
820 TreeServer* CheckDupe = Utils->FindServer(sname);
823 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
824 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
827 // Begin the sync here. this kickstarts the
828 // other side, waiting in WAIT_AUTH_2 state,
829 // into starting their burst, as it shows
831 this->LinkState = CONNECTED;
832 // we should add the details of this server now
833 // to the servers tree, as a child of the root
835 TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this,x->Hidden);
836 Utils->TreeRoot->AddChild(Node);
837 params[3] = ":" + params[3];
838 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
839 this->bursting = true;
844 this->SendError("Invalid credentials");
845 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
849 bool TreeSocket::Inbound_Server(std::deque<std::string> ¶ms)
851 if (params.size() < 4)
853 irc::string servername = params[0].c_str();
854 std::string sname = params[0];
855 std::string password = params[1];
856 std::string description = params[3];
857 int hops = atoi(params[2].c_str());
859 this->InboundServerName = sname;
860 this->InboundDescription = description;
863 this->SendCapabilities();
867 this->SendError("Server too far away for authentication");
868 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
872 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
874 if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty()))))
876 /* First check for instances of the server that are waiting between the inbound and outbound SERVER command */
877 TreeSocket* CheckDupeSocket = Utils->FindBurstingServer(sname);
880 /* If we find one, we abort the link to prevent a race condition */
881 this->SendError("Negotiation collision");
882 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists in a negotiating state.");
883 CheckDupeSocket->SendError("Negotiation collision");
884 Instance->SE->DelFd(CheckDupeSocket);
885 CheckDupeSocket->Close();
886 delete CheckDupeSocket;
889 /* Now check for fully initialized instances of the server */
890 TreeServer* CheckDupe = Utils->FindServer(sname);
893 this->SendError("Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
894 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
897 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
900 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
901 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
904 Utils->AddBurstingServer(sname,this);
906 // this is good. Send our details: Our server name and description and hopcount of 0,
907 // along with the sendpass from this block.
908 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 :"+this->Instance->Config->ServerDesc);
909 // move to the next state, we are now waiting for THEM.
910 this->LinkState = WAIT_AUTH_2;
914 this->SendError("Invalid credentials");
915 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
919 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
922 irc::tokenstream tokens(line);
924 while (tokens.GetToken(param))
932 bool TreeSocket::ProcessLine(std::string &line)
934 std::deque<std::string> params;
938 line = line.substr(0, line.find_first_of("\r\n"));
943 Instance->Log(DEBUG, "S[%d] <- %s", this->GetFd(), line.c_str());
945 this->Split(line.c_str(),params);
950 if ((params[0][0] == ':') && (params.size() > 1))
952 prefix = params[0].substr(1);
955 command = params[0].c_str();
957 switch (this->LinkState)
962 // Waiting for SERVER command from remote server. Server initiating
963 // the connection sends the first SERVER command, listening server
964 // replies with theirs if its happy, then if the initiator is happy,
965 // it starts to send its net sync, which starts the merge, otherwise
966 // it sends an ERROR.
967 if (command == "PASS")
969 /* Silently ignored */
971 else if (command == "SERVER")
973 return this->Inbound_Server(params);
975 else if (command == "ERROR")
977 return this->Error(params);
979 else if (command == "USER")
981 this->SendError("Client connections to this port are prohibited.");
984 else if (command == "CAPAB")
986 return this->Capab(params);
988 else if ((command == "U") || (command == "S"))
990 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
995 irc::string error = "Invalid command in negotiation phase: " + command;
996 this->SendError(assign(error));
1001 // Waiting for start of other side's netmerge to say they liked our
1003 if (command == "SERVER")
1005 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1009 else if ((command == "U") || (command == "S"))
1011 this->SendError("Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1014 else if (command == "BURST")
1016 if (params.size() && Utils->EnableTimeSync)
1018 bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
1019 time_t them = atoi(params[0].c_str());
1020 time_t delta = them - Instance->Time(false);
1021 if ((delta < -300) || (delta > 300))
1023 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));
1024 SendError("Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than five minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1027 else if ((delta < -30) || (delta > 30))
1029 Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs(delta));
1032 if (!Utils->MasterTime && !we_have_delta)
1034 this->Instance->SetTimeDelta(delta);
1035 // Send this new timestamp to any other servers
1036 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
1039 this->LinkState = CONNECTED;
1040 Link* lnk = Utils->FindLink(InboundServerName);
1041 Node = new TreeServer(this->Utils,this->Instance, InboundServerName, InboundDescription, Utils->TreeRoot, this, lnk ? lnk->Hidden : false);
1042 Utils->DelBurstingServer(this);
1043 Utils->TreeRoot->AddChild(Node);
1045 params.push_back(InboundServerName);
1046 params.push_back("*");
1047 params.push_back("1");
1048 params.push_back(":"+InboundDescription);
1049 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1050 this->bursting = true;
1051 this->DoBurst(Node);
1053 else if (command == "ERROR")
1055 return this->Error(params);
1057 else if (command == "CAPAB")
1059 return this->Capab(params);
1064 this->SendError("Internal error -- listening socket accepted its own descriptor!!!");
1068 if (command == "SERVER")
1070 // another server we connected to, which was in WAIT_AUTH_1 state,
1071 // has just sent us their credentials. If we get this far, theyre
1072 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1073 // if we're happy with this, we should send our netburst which
1074 // kickstarts the merge.
1075 return this->Outbound_Reply_Server(params);
1077 else if (command == "ERROR")
1079 return this->Error(params);
1081 else if (command == "CAPAB")
1083 return this->Capab(params);
1087 // This is the 'authenticated' state, when all passwords
1088 // have been exchanged and anything past this point is taken
1091 if (!prefix.empty())
1093 std::string direction = prefix;
1094 userrec* t = this->Instance->FindNick(prefix);
1097 direction = t->server;
1099 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1100 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1102 if (route_back_again)
1103 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1107 * When there is activity on the socket, reset the ping counter so
1108 * that we're not wasting bandwidth pinging an active server.
1110 route_back_again->SetNextPingTime(time(NULL) + 60);
1111 route_back_again->SetPingFlag();
1115 prefix = this->GetName();
1118 if ((command == "MODE") && (params.size() >= 2))
1120 chanrec* channel = Instance->FindChan(params[0]);
1123 userrec* x = Instance->FindNick(prefix);
1126 if (warned.find(x->server) == warned.end())
1128 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);
1129 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());
1130 warned[x->server] = x->nick;
1136 if (command == "SVSMODE")
1138 /* Services expects us to implement
1139 * SVSMODE. In inspircd its the same as
1145 /* Yes, know, this is a mess. Its reasonably fast though as we're
1146 * working with std::string here.
1148 if ((command == "NICK") && (params.size() >= 8))
1150 return this->IntroduceClient(prefix,params);
1152 else if (command == "FJOIN")
1154 TreeServer* ServerSource = Utils->FindServer(prefix);
1156 Utils->SetRemoteBursting(ServerSource, false);
1157 return this->ForceJoin(prefix,params);
1159 else if (command == "STATS")
1161 return this->Stats(prefix, params);
1163 else if (command == "MOTD")
1165 return this->Motd(prefix, params);
1167 else if (command == "KILL" && Utils->IsServer(prefix))
1169 return this->RemoteKill(prefix,params);
1171 else if (command == "MODULES")
1173 return this->Modules(prefix, params);
1175 else if (command == "ADMIN")
1177 return this->Admin(prefix, params);
1179 else if (command == "SERVER")
1181 return this->RemoteServer(prefix,params);
1183 else if (command == "ERROR")
1185 return this->Error(params);
1187 else if (command == "OPERTYPE")
1189 return this->OperType(prefix,params);
1191 else if (command == "FMODE")
1193 TreeServer* ServerSource = Utils->FindServer(prefix);
1195 Utils->SetRemoteBursting(ServerSource, false);
1196 return this->ForceMode(prefix,params);
1198 else if (command == "FTOPIC")
1200 return this->ForceTopic(prefix,params);
1202 else if (command == "REHASH")
1204 return this->RemoteRehash(prefix,params);
1206 else if (command == "METADATA")
1208 return this->MetaData(prefix,params);
1210 else if (command == "REMSTATUS")
1212 return this->RemoveStatus(prefix,params);
1214 else if (command == "PING")
1217 prefix = this->GetName();
1219 * We just got a ping from a server that's bursting.
1220 * This can't be right, so set them to not bursting, and
1221 * apply their lines.
1223 TreeServer* ServerSource = Utils->FindServer(prefix);
1225 Utils->SetRemoteBursting(ServerSource, false);
1229 this->bursting = false;
1230 Instance->XLines->apply_lines(Utils->lines_to_apply);
1231 Utils->lines_to_apply = 0;
1234 return this->LocalPing(prefix,params);
1236 else if (command == "PONG")
1239 prefix = this->GetName();
1241 * We just got a pong from a server that's bursting.
1242 * This can't be right, so set them to not bursting, and
1243 * apply their lines.
1245 TreeServer* ServerSource = Utils->FindServer(prefix);
1247 Utils->SetRemoteBursting(ServerSource, false);
1251 this->bursting = false;
1252 Instance->XLines->apply_lines(Utils->lines_to_apply);
1253 Utils->lines_to_apply = 0;
1256 return this->LocalPong(prefix,params);
1258 else if (command == "VERSION")
1260 return this->ServerVersion(prefix,params);
1262 else if (command == "FHOST")
1264 return this->ChangeHost(prefix,params);
1266 else if (command == "FNAME")
1268 return this->ChangeName(prefix,params);
1270 else if (command == "ADDLINE")
1272 TreeServer* ServerSource = Utils->FindServer(prefix);
1274 Utils->SetRemoteBursting(ServerSource, false);
1275 return this->AddLine(prefix,params);
1277 else if (command == "SVSNICK")
1281 prefix = this->GetName();
1283 return this->ForceNick(prefix,params);
1285 else if (command == "OPERQUIT")
1287 return this->OperQuit(prefix,params);
1289 else if (command == "IDLE")
1291 return this->Whois(prefix,params);
1293 else if (command == "PUSH")
1295 return this->Push(prefix,params);
1297 else if (command == "TIMESET")
1299 return this->HandleSetTime(prefix, params);
1301 else if (command == "TIME")
1303 return this->Time(prefix,params);
1305 else if ((command == "KICK") && (Utils->IsServer(prefix)))
1307 std::string sourceserv = this->myhost;
1308 if (params.size() == 3)
1310 userrec* user = this->Instance->FindNick(params[1]);
1311 chanrec* chan = this->Instance->FindChan(params[0]);
1314 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1315 /* Yikes, the channels gone! */
1319 if (!this->InboundServerName.empty())
1321 sourceserv = this->InboundServerName;
1323 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1325 else if (command == "SVSJOIN")
1329 prefix = this->GetName();
1331 return this->ServiceJoin(prefix,params);
1333 else if (command == "SQUIT")
1335 if (params.size() == 2)
1337 this->Squit(Utils->FindServer(params[0]),params[1]);
1341 else if (command == "OPERNOTICE")
1343 std::string sourceserv = this->myhost;
1344 if (!this->InboundServerName.empty())
1345 sourceserv = this->InboundServerName;
1346 if (params.size() >= 1)
1347 Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1348 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1350 else if (command == "MODENOTICE")
1352 std::string sourceserv = this->myhost;
1353 if (!this->InboundServerName.empty())
1354 sourceserv = this->InboundServerName;
1355 if (params.size() >= 2)
1357 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1359 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1361 else if (command == "SNONOTICE")
1363 std::string sourceserv = this->myhost;
1364 if (!this->InboundServerName.empty())
1365 sourceserv = this->InboundServerName;
1366 if (params.size() >= 2)
1368 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1370 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1372 else if (command == "ENDBURST")
1374 this->bursting = false;
1375 Instance->XLines->apply_lines(Utils->lines_to_apply);
1376 Utils->lines_to_apply = 0;
1377 std::string sourceserv = this->myhost;
1378 if (!this->InboundServerName.empty())
1379 sourceserv = this->InboundServerName;
1380 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1382 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1383 rmode.Send(Instance);
1389 // not a special inter-server command.
1390 // Emulate the actual user doing the command,
1391 // this saves us having a huge ugly parser.
1392 userrec* who = this->Instance->FindNick(prefix);
1393 std::string sourceserv = this->myhost;
1394 if (!this->InboundServerName.empty())
1396 sourceserv = this->InboundServerName;
1398 if ((!who) && (command == "MODE"))
1400 if (Utils->IsServer(prefix))
1402 const char* modelist[127];
1403 for (size_t i = 0; i < params.size(); i++)
1404 modelist[i] = params[i].c_str();
1405 userrec* fake = new userrec(Instance);
1406 fake->SetFd(FD_MAGIC_NUMBER);
1407 this->Instance->SendMode(modelist, params.size(), fake);
1410 /* Hot potato! pass it on! */
1411 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1416 if ((command == "NICK") && (params.size() > 0))
1418 /* On nick messages, check that the nick doesnt
1419 * already exist here. If it does, kill their copy,
1422 userrec* x = this->Instance->FindNick(params[0]);
1423 if ((x) && (x != who))
1425 std::deque<std::string> p;
1426 p.push_back(params[0]);
1427 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
1428 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1430 p.push_back(prefix);
1431 p.push_back("Nickname collision");
1432 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1433 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1434 userrec* y = this->Instance->FindNick(prefix);
1437 userrec::QuitUser(this->Instance,y,"Nickname collision");
1439 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1443 target = who->server;
1444 const char* strparams[127];
1445 for (unsigned int q = 0; q < params.size(); q++)
1447 strparams[q] = params[q].c_str();
1449 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1452 this->SendError("Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1459 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1465 // its not a user. Its either a server, or somethings screwed up.
1466 if (Utils->IsServer(prefix))
1467 target = this->Instance->Config->ServerName;
1471 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1480 std::string TreeSocket::GetName()
1482 std::string sourceserv = this->myhost;
1483 if (!this->InboundServerName.empty())
1485 sourceserv = this->InboundServerName;
1490 void TreeSocket::OnTimeout()
1492 if (this->LinkState == CONNECTING)
1494 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
1495 Link* MyLink = Utils->FindLink(myhost);
1497 Utils->DoFailOver(MyLink);
1501 void TreeSocket::OnClose()
1503 // Connection closed.
1504 // If the connection is fully up (state CONNECTED)
1505 // then propogate a netsplit to all peers.
1506 std::string quitserver = this->myhost;
1507 if (!this->InboundServerName.empty())
1509 quitserver = this->InboundServerName;
1511 TreeServer* s = Utils->FindServer(quitserver);
1514 Squit(s,"Remote host closed the connection");
1517 if (!quitserver.empty())
1519 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
1520 time_t server_uptime = Instance->Time() - this->age;
1522 Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' was established for %s", quitserver.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str());
1526 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1528 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1529 * or discovering if this port is the server port, we don't allow connections from any
1530 * IPs for which we don't have a link block.
1534 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1537 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1538 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1543 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
1549 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1550 s = s; /* Whinge whinge whinge, thats all GCC ever does. */