1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2008 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"
30 /* $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 */
32 /** Yay for fast searches!
33 * This is hundreds of times faster than recursion
34 * or even scanning a linked list, especially when
35 * there are more than a few servers to deal with.
38 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
40 if (this->ServerInstance->IsSID(ServerName))
41 return this->FindServerID(ServerName);
43 server_hash::iterator iter = serverlist.find(ServerName.c_str());
44 if (iter != serverlist.end())
54 TreeServer* SpanningTreeUtilities::FindRemoteBurstServer(TreeServer* Server)
56 server_hash::iterator iter = RemoteServersBursting.find(Server->GetName().c_str());
57 if (iter != RemoteServersBursting.end())
63 TreeSocket* SpanningTreeUtilities::FindBurstingServer(const std::string &ServerName)
65 std::map<irc::string,TreeSocket*>::iterator iter;
66 iter = burstingserverlist.find(ServerName.c_str());
67 if (iter != burstingserverlist.end())
77 void SpanningTreeUtilities::SetRemoteBursting(TreeServer* Server, bool bursting)
79 server_hash::iterator iter = RemoteServersBursting.find(Server->GetName().c_str());
82 if (iter == RemoteServersBursting.end())
83 RemoteServersBursting.insert(make_pair(Server->GetName(), Server));
88 if (iter != RemoteServersBursting.end())
89 RemoteServersBursting.erase(iter);
92 ServerInstance->Log(DEBUG,"Server %s is %sbursting nicknames", Server->GetName().c_str(), bursting ? "" : "no longer ");
95 void SpanningTreeUtilities::AddBurstingServer(const std::string &ServerName, TreeSocket* s)
97 std::map<irc::string,TreeSocket*>::iterator iter = burstingserverlist.find(ServerName.c_str());
98 if (iter == burstingserverlist.end())
99 burstingserverlist[ServerName.c_str()] = s;
102 void SpanningTreeUtilities::DelBurstingServer(TreeSocket* s)
104 for (std::map<irc::string,TreeSocket*>::iterator iter = burstingserverlist.begin(); iter != burstingserverlist.end(); iter++)
106 if (iter->second == s)
108 burstingserverlist.erase(iter);
114 /** Returns the locally connected server we must route a
115 * message through to reach server 'ServerName'. This
116 * only applies to one-to-one and not one-to-many routing.
117 * See the comments for the constructor of TreeServer
120 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
122 if (ServerName.c_str() == TreeRoot->GetName() || ServerName == ServerInstance->Config->GetSID())
124 TreeServer* Found = FindServer(ServerName);
127 return Found->GetRoute();
135 /** Find the first server matching a given glob mask.
136 * Theres no find-using-glob method of hash_map [awwww :-(]
137 * so instead, we iterate over the list using an iterator
138 * and match each one until we get a hit. Yes its slow,
141 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
143 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
145 if (match(i->first.c_str(),ServerName.c_str()))
151 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
153 server_hash::iterator iter = sidlist.find(id);
154 if (iter != sidlist.end())
160 /* A convenient wrapper that returns true if a server exists */
161 bool SpanningTreeUtilities::IsServer(const std::string &ServerName)
163 return (FindServer(ServerName) != NULL);
166 SpanningTreeUtilities::SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* C) : ServerInstance(Instance), Creator(C)
170 this->TreeRoot = new TreeServer(this, ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc, ServerInstance->Config->GetSID());
172 modulelist* ml = ServerInstance->Modules->FindInterface("BufferedSocketHook");
174 /* Did we find any modules? */
177 /* Yes, enumerate them all to find out the hook name */
178 for (modulelist::iterator m = ml->begin(); m != ml->end(); m++)
180 /* Make a request to it for its name, its implementing
181 * BufferedSocketHook so we know its safe to do this
183 std::string name = BufferedSocketNameRequest((Module*)Creator, *m).Send();
184 /* Build a map of them */
185 hooks[name.c_str()] = *m;
186 hooknames.push_back(name);
190 this->ReadConfiguration(true);
193 SpanningTreeUtilities::~SpanningTreeUtilities()
195 for (unsigned int i = 0; i < Bindings.size(); i++)
197 ServerInstance->SE->DelFd(Bindings[i]);
198 Bindings[i]->Close();
200 while (TreeRoot->ChildCount())
202 TreeServer* child_server = TreeRoot->GetChild(0);
205 TreeSocket* sock = child_server->GetSocket();
206 ServerInstance->SE->DelFd(sock);
211 ServerInstance->BufferedSocketCull();
214 void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list)
216 if (list.find(server) == list.end())
217 list[server] = server;
220 /* returns a list of DIRECT servernames for a specific channel */
221 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list)
227 ulist = c->GetOppedUsers();
230 ulist = c->GetHalfoppedUsers();
233 ulist = c->GetVoicedUsers();
236 ulist = c->GetUsers();
239 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
241 if ((i->first->GetFd() < 0) && (exempt_list.find(i->first) == exempt_list.end()))
243 TreeServer* best = this->BestRouteTo(i->first->server);
245 AddThisServer(best,list);
251 bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque<std::string> ¶ms)
254 TreeServer* omitroute = this->BestRouteTo(omit);
255 if ((command == "NOTICE") || (command == "PRIVMSG"))
257 if (params.size() >= 2)
260 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
263 params[0] = params[0].substr(1, params[0].length()-1);
265 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
267 // special routing for private messages/notices
268 User* d = ServerInstance->FindNick(params[0]);
271 std::deque<std::string> par;
272 par.push_back(params[0]);
273 par.push_back(":"+params[1]);
274 this->DoOneToOne(prefix,command.c_str(),par,d->server);
278 else if (*(params[0].c_str()) == '$')
280 std::deque<std::string> par;
281 par.push_back(params[0]);
282 par.push_back(":"+params[1]);
283 this->DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
288 Channel* c = ServerInstance->FindChan(params[0]);
289 User* u = ServerInstance->FindNick(prefix);
294 FOREACH_MOD(I_OnBuildExemptList, OnBuildExemptList((command == "PRIVMSG" ? MSG_PRIVMSG : MSG_NOTICE), c, u, pfx, elist, params[1]));
295 GetListOfServersForChannel(c,list,pfx,elist);
297 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
299 TreeSocket* Sock = i->second->GetSocket();
300 if ((Sock) && (i->second->GetName() != omit) && (omitroute != i->second))
302 Sock->WriteLine(data);
310 unsigned int items =this->TreeRoot->ChildCount();
311 for (unsigned int x = 0; x < items; x++)
313 TreeServer* Route = this->TreeRoot->GetChild(x);
314 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
316 TreeSocket* Sock = Route->GetSocket();
318 Sock->WriteLine(data);
324 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string omit)
326 TreeServer* omitroute = this->BestRouteTo(omit);
327 std::string FullLine = ":" + prefix + " " + command;
328 unsigned int words = params.size();
329 for (unsigned int x = 0; x < words; x++)
331 FullLine = FullLine + " " + params[x];
333 unsigned int items = this->TreeRoot->ChildCount();
334 for (unsigned int x = 0; x < items; x++)
336 TreeServer* Route = this->TreeRoot->GetChild(x);
338 // The route has a socket (its a direct connection)
339 // The route isnt the one to be omitted
340 // The route isnt the path to the one to be omitted
341 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
343 TreeSocket* Sock = Route->GetSocket();
345 Sock->WriteLine(FullLine);
351 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms)
353 std::string FullLine = ":" + prefix + " " + command;
354 unsigned int words = params.size();
355 for (unsigned int x = 0; x < words; x++)
357 FullLine = FullLine + " " + params[x];
359 unsigned int items = this->TreeRoot->ChildCount();
360 for (unsigned int x = 0; x < items; x++)
362 TreeServer* Route = this->TreeRoot->GetChild(x);
363 if (Route && Route->GetSocket())
365 TreeSocket* Sock = Route->GetSocket();
367 Sock->WriteLine(FullLine);
373 bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
375 std::string spfx = prefix;
376 std::string scmd = command;
377 return this->DoOneToMany(spfx, scmd, params);
380 bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
382 std::string spfx = prefix;
383 std::string scmd = command;
384 return this->DoOneToAllButSender(spfx, scmd, params, omit);
387 bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string target)
389 TreeServer* Route = this->BestRouteTo(target);
392 std::string FullLine = ":" + prefix + " " + command;
393 unsigned int words = params.size();
394 for (unsigned int x = 0; x < words; x++)
396 FullLine = FullLine + " " + params[x];
398 if (Route && Route->GetSocket())
400 TreeSocket* Sock = Route->GetSocket();
402 Sock->WriteLine(FullLine);
412 void SpanningTreeUtilities::RefreshIPCache()
415 for (std::vector<Link>::iterator L = LinkBlocks.begin(); L != LinkBlocks.end(); L++)
417 if ((!L->IPAddr.empty()) && (!L->RecvPass.empty()) && (!L->SendPass.empty()) && (!L->Name.empty()) && (L->Port))
419 ValidIPs.push_back(L->IPAddr);
421 if (L->AllowMask.length())
422 ValidIPs.push_back(L->AllowMask);
424 /* Needs resolving */
426 QueryType start_type = DNS_QUERY_A;
428 start_type = DNS_QUERY_AAAA;
429 if (strchr(L->IPAddr.c_str(),':'))
432 if (inet_pton(AF_INET6, L->IPAddr.c_str(), &n) < 1)
439 if (inet_aton(L->IPAddr.c_str(),&n) < 1)
447 SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L->IPAddr, *L, cached, start_type);
448 ServerInstance->AddResolver(sr, cached);
458 void SpanningTreeUtilities::ReadConfiguration(bool rebind)
460 ConfigReader* Conf = new ConfigReader(ServerInstance);
463 for (unsigned int i = 0; i < Bindings.size(); i++)
465 ServerInstance->SE->DelFd(Bindings[i]);
466 Bindings[i]->Close();
468 ServerInstance->BufferedSocketCull();
471 for (int j = 0; j < Conf->Enumerate("bind"); j++)
473 std::string Type = Conf->ReadValue("bind","type",j);
474 std::string IP = Conf->ReadValue("bind","address",j);
475 std::string Port = Conf->ReadValue("bind","port",j);
476 std::string transport = Conf->ReadValue("bind","transport",j);
477 if (Type == "servers")
479 irc::portparser portrange(Port, false);
481 while ((portno = portrange.GetToken()))
486 if ((!transport.empty()) && (hooks.find(transport.c_str()) == hooks.end()))
488 throw CoreException("Can't find transport type '"+transport+"' for port "+IP+":"+Port+" - maybe you forgot to load it BEFORE m_spanningtree in your config file?");
492 TreeSocket* listener = new TreeSocket(this, ServerInstance, IP.c_str(), portno, true, 10, transport.empty() ? NULL : hooks[transport.c_str()]);
493 if (listener->GetState() == I_LISTENING)
495 ServerInstance->Log(DEFAULT,"m_spanningtree: Binding server port %s:%d successful!", IP.c_str(), portno);
496 Bindings.push_back(listener);
500 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port: %s:%d: %s",IP.c_str(), portno, strerror(errno));
507 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
508 HideULines = Conf->ReadFlag("options","hideulines",0);
509 AnnounceTSChange = Conf->ReadFlag("options","announcets",0);
510 EnableTimeSync = Conf->ReadFlag("timesync","enable",0);
511 MasterTime = Conf->ReadFlag("timesync", "master", 0);
512 ChallengeResponse = !Conf->ReadFlag("options", "disablehmac", 0);
513 quiet_bursts = Conf->ReadFlag("options", "quietbursts", 0);
514 PingWarnTime = Conf->ReadInteger("options", "pingwarning", 0, true);
515 PingFreq = Conf->ReadInteger("options", "serverpingfreq", 0, true);
520 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
525 for (int j = 0; j < Conf->Enumerate("link"); j++)
528 std::string Allow = Conf->ReadValue("link", "allowmask", j);
529 L.Name = (Conf->ReadValue("link", "name", j)).c_str();
531 L.IPAddr = Conf->ReadValue("link", "ipaddr", j);
532 L.FailOver = Conf->ReadValue("link", "failover", j).c_str();
533 L.Port = Conf->ReadInteger("link", "port", j, true);
534 L.SendPass = Conf->ReadValue("link", "sendpass", j);
535 L.RecvPass = Conf->ReadValue("link", "recvpass", j);
536 L.AutoConnect = Conf->ReadInteger("link", "autoconnect", j, true);
537 L.HiddenFromStats = Conf->ReadFlag("link", "statshidden", j);
538 L.Timeout = Conf->ReadInteger("link", "timeout", j, true);
539 L.Hook = Conf->ReadValue("link", "transport", j);
540 L.Bind = Conf->ReadValue("link", "bind", j);
541 L.Hidden = Conf->ReadFlag("link", "hidden", j);
543 if ((!L.Hook.empty()) && (hooks.find(L.Hook.c_str()) == hooks.end()))
545 throw CoreException("Can't find transport type '"+L.Hook+"' for link '"+assign(L.Name)+"' - maybe you forgot to load it BEFORE m_spanningtree in your config file? Skipping <link> tag completely.");
550 L.NextConnectTime = time(NULL) + L.AutoConnect;
551 /* Bugfix by brain, do not allow people to enter bad configurations */
552 if (L.Name != ServerInstance->Config->ServerName)
554 if ((!L.IPAddr.empty()) && (!L.RecvPass.empty()) && (!L.SendPass.empty()) && (!L.Name.empty()) && (L.Port))
556 if (L.Name.find('.') == std::string::npos)
557 throw CoreException("The link name '"+assign(L.Name)+"' is invalid and must contain at least one '.' character");
559 if (L.Name.length() > 64)
560 throw CoreException("The link name '"+assign(L.Name)+"' is longer than 64 characters!");
562 ValidIPs.push_back(L.IPAddr);
565 ValidIPs.push_back(Allow);
567 /* Needs resolving */
569 QueryType start_type = DNS_QUERY_A;
571 start_type = DNS_QUERY_AAAA;
572 if (strchr(L.IPAddr.c_str(),':'))
575 if (inet_pton(AF_INET6, L.IPAddr.c_str(), &n) < 1)
581 if (inet_aton(L.IPAddr.c_str(),&n) < 1)
586 if (inet_aton(L.IPAddr.c_str(),&n) < 1)
595 SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L.IPAddr, L, cached, start_type);
596 ServerInstance->AddResolver(sr, cached);
603 LinkBlocks.push_back(L);
607 if (L.IPAddr.empty())
609 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', IP address not defined!");
611 else if (L.RecvPass.empty())
613 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', recvpass not defined!");
615 else if (L.SendPass.empty())
617 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', sendpass not defined!");
619 else if (L.Name.empty())
621 throw CoreException("Invalid configuration, link tag without a name! IP address: "+L.IPAddr);
625 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', no port specified!");
631 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', link tag has the same server name as the local server!");
637 void SpanningTreeUtilities::DoFailOver(Link* x)
639 if (x->FailOver.length())
641 if (x->FailOver == x->Name)
643 Creator->RemoteMessage(NULL,"FAILOVER: Some muppet configured the failover for server \002%s\002 to point at itself. Not following it!", x->Name.c_str());
646 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
649 TreeServer* CheckDupe = this->FindServer(x->FailOver.c_str());
652 ServerInstance->Log(DEBUG,"Skipping existing failover: %s", x->FailOver.c_str());
656 Creator->RemoteMessage(NULL,"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
657 Creator->ConnectServer(TryThisOne);
662 Creator->RemoteMessage(NULL,"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
667 Link* SpanningTreeUtilities::FindLink(const std::string& name)
669 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
671 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))