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"
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 bool SpanningTreeUtilities::IsSID(const std::string &str)
34 /* Returns true if the string given is exactly 3 characters long,
35 * starts with a digit, and the other two characters are A-Z or digits
37 return ((str.length() == 3) && isdigit(str[0]) &&
38 ((str[1] >= 'A' && str[1] <= 'Z') || isdigit(str[1])) &&
39 ((str[2] >= 'A' && str[2] <= 'Z') || isdigit(str[2])));
42 /** Yay for fast searches!
43 * This is hundreds of times faster than recursion
44 * or even scanning a linked list, especially when
45 * there are more than a few servers to deal with.
48 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
50 if (IsSID(ServerName))
51 return this->FindServerID(ServerName);
53 server_hash::iterator iter = serverlist.find(ServerName.c_str());
54 if (iter != serverlist.end())
64 TreeServer* SpanningTreeUtilities::FindRemoteBurstServer(TreeServer* Server)
66 server_hash::iterator iter = RemoteServersBursting.find(Server->GetName().c_str());
67 if (iter != RemoteServersBursting.end())
73 TreeSocket* SpanningTreeUtilities::FindBurstingServer(const std::string &ServerName)
75 std::map<irc::string,TreeSocket*>::iterator iter;
76 iter = burstingserverlist.find(ServerName.c_str());
77 if (iter != burstingserverlist.end())
87 void SpanningTreeUtilities::SetRemoteBursting(TreeServer* Server, bool bursting)
89 server_hash::iterator iter = RemoteServersBursting.find(Server->GetName().c_str());
92 if (iter == RemoteServersBursting.end())
93 RemoteServersBursting.insert(make_pair(Server->GetName(), Server));
98 if (iter != RemoteServersBursting.end())
99 RemoteServersBursting.erase(iter);
102 ServerInstance->Log(DEBUG,"Server %s is %sbursting nicknames", Server->GetName().c_str(), bursting ? "" : "no longer ");
105 void SpanningTreeUtilities::AddBurstingServer(const std::string &ServerName, TreeSocket* s)
107 std::map<irc::string,TreeSocket*>::iterator iter = burstingserverlist.find(ServerName.c_str());
108 if (iter == burstingserverlist.end())
109 burstingserverlist[ServerName.c_str()] = s;
112 void SpanningTreeUtilities::DelBurstingServer(TreeSocket* s)
114 for (std::map<irc::string,TreeSocket*>::iterator iter = burstingserverlist.begin(); iter != burstingserverlist.end(); iter++)
116 if (iter->second == s)
118 burstingserverlist.erase(iter);
124 /** Returns the locally connected server we must route a
125 * message through to reach server 'ServerName'. This
126 * only applies to one-to-one and not one-to-many routing.
127 * See the comments for the constructor of TreeServer
130 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
132 if (ServerName.c_str() == TreeRoot->GetName() || ServerName == ServerInstance->Config->GetSID())
134 TreeServer* Found = FindServer(ServerName);
137 return Found->GetRoute();
145 /** Find the first server matching a given glob mask.
146 * Theres no find-using-glob method of hash_map [awwww :-(]
147 * so instead, we iterate over the list using an iterator
148 * and match each one until we get a hit. Yes its slow,
151 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
153 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
155 if (match(i->first.c_str(),ServerName.c_str()))
161 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
163 server_hash::iterator iter = sidlist.find(id);
164 if (iter != sidlist.end())
170 /* A convenient wrapper that returns true if a server exists */
171 bool SpanningTreeUtilities::IsServer(const std::string &ServerName)
173 return (FindServer(ServerName) != NULL);
176 SpanningTreeUtilities::SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* C) : ServerInstance(Instance), Creator(C)
180 this->TreeRoot = new TreeServer(this, ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc, ServerInstance->Config->GetSID());
182 modulelist* ml = ServerInstance->Modules->FindInterface("BufferedSocketHook");
184 /* Did we find any modules? */
187 /* Yes, enumerate them all to find out the hook name */
188 for (modulelist::iterator m = ml->begin(); m != ml->end(); m++)
190 /* Make a request to it for its name, its implementing
191 * BufferedSocketHook so we know its safe to do this
193 std::string name = BufferedSocketNameRequest((Module*)Creator, *m).Send();
194 /* Build a map of them */
195 hooks[name.c_str()] = *m;
196 hooknames.push_back(name);
200 this->ReadConfiguration(true);
203 SpanningTreeUtilities::~SpanningTreeUtilities()
205 for (unsigned int i = 0; i < Bindings.size(); i++)
207 ServerInstance->SE->DelFd(Bindings[i]);
208 Bindings[i]->Close();
210 while (TreeRoot->ChildCount())
212 TreeServer* child_server = TreeRoot->GetChild(0);
215 TreeSocket* sock = child_server->GetSocket();
216 ServerInstance->SE->DelFd(sock);
221 ServerInstance->BufferedSocketCull();
224 void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list)
226 if (list.find(server) == list.end())
227 list[server] = server;
230 /* returns a list of DIRECT servernames for a specific channel */
231 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list)
237 ulist = c->GetOppedUsers();
240 ulist = c->GetHalfoppedUsers();
243 ulist = c->GetVoicedUsers();
246 ulist = c->GetUsers();
249 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
251 if ((i->first->GetFd() < 0) && (exempt_list.find(i->first) == exempt_list.end()))
253 TreeServer* best = this->BestRouteTo(i->first->server);
255 AddThisServer(best,list);
261 bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque<std::string> ¶ms)
264 TreeServer* omitroute = this->BestRouteTo(omit);
265 if ((command == "NOTICE") || (command == "PRIVMSG"))
267 if (params.size() >= 2)
270 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
273 params[0] = params[0].substr(1, params[0].length()-1);
275 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
277 // special routing for private messages/notices
278 User* d = ServerInstance->FindNick(params[0]);
281 std::deque<std::string> par;
282 par.push_back(params[0]);
283 par.push_back(":"+params[1]);
284 this->DoOneToOne(prefix,command.c_str(),par,d->server);
288 else if (*(params[0].c_str()) == '$')
290 std::deque<std::string> par;
291 par.push_back(params[0]);
292 par.push_back(":"+params[1]);
293 this->DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
298 Channel* c = ServerInstance->FindChan(params[0]);
299 User* u = ServerInstance->FindNick(prefix);
304 FOREACH_MOD(I_OnBuildExemptList, OnBuildExemptList((command == "PRIVMSG" ? MSG_PRIVMSG : MSG_NOTICE), c, u, pfx, elist, params[1]));
305 GetListOfServersForChannel(c,list,pfx,elist);
307 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
309 TreeSocket* Sock = i->second->GetSocket();
310 if ((Sock) && (i->second->GetName() != omit) && (omitroute != i->second))
312 Sock->WriteLine(data);
320 unsigned int items =this->TreeRoot->ChildCount();
321 for (unsigned int x = 0; x < items; x++)
323 TreeServer* Route = this->TreeRoot->GetChild(x);
324 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
326 TreeSocket* Sock = Route->GetSocket();
328 Sock->WriteLine(data);
334 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string omit)
336 TreeServer* omitroute = this->BestRouteTo(omit);
337 std::string FullLine = ":" + prefix + " " + command;
338 unsigned int words = params.size();
339 for (unsigned int x = 0; x < words; x++)
341 FullLine = FullLine + " " + params[x];
343 unsigned int items = this->TreeRoot->ChildCount();
344 for (unsigned int x = 0; x < items; x++)
346 TreeServer* Route = this->TreeRoot->GetChild(x);
348 // The route has a socket (its a direct connection)
349 // The route isnt the one to be omitted
350 // The route isnt the path to the one to be omitted
351 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
353 TreeSocket* Sock = Route->GetSocket();
355 Sock->WriteLine(FullLine);
361 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms)
363 std::string FullLine = ":" + prefix + " " + command;
364 unsigned int words = params.size();
365 for (unsigned int x = 0; x < words; x++)
367 FullLine = FullLine + " " + params[x];
369 unsigned int items = this->TreeRoot->ChildCount();
370 for (unsigned int x = 0; x < items; x++)
372 TreeServer* Route = this->TreeRoot->GetChild(x);
373 if (Route && Route->GetSocket())
375 TreeSocket* Sock = Route->GetSocket();
377 Sock->WriteLine(FullLine);
383 bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
385 std::string spfx = prefix;
386 std::string scmd = command;
387 return this->DoOneToMany(spfx, scmd, params);
390 bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
392 std::string spfx = prefix;
393 std::string scmd = command;
394 return this->DoOneToAllButSender(spfx, scmd, params, omit);
397 bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string target)
399 TreeServer* Route = this->BestRouteTo(target);
402 std::string FullLine = ":" + prefix + " " + command;
403 unsigned int words = params.size();
404 for (unsigned int x = 0; x < words; x++)
406 FullLine = FullLine + " " + params[x];
408 if (Route && Route->GetSocket())
410 TreeSocket* Sock = Route->GetSocket();
412 Sock->WriteLine(FullLine);
422 void SpanningTreeUtilities::RefreshIPCache()
425 for (std::vector<Link>::iterator L = LinkBlocks.begin(); L != LinkBlocks.end(); L++)
427 if ((!L->IPAddr.empty()) && (!L->RecvPass.empty()) && (!L->SendPass.empty()) && (!L->Name.empty()) && (L->Port))
429 ValidIPs.push_back(L->IPAddr);
431 if (L->AllowMask.length())
432 ValidIPs.push_back(L->AllowMask);
434 /* Needs resolving */
436 QueryType start_type = DNS_QUERY_A;
438 start_type = DNS_QUERY_AAAA;
439 if (strchr(L->IPAddr.c_str(),':'))
442 if (inet_pton(AF_INET6, L->IPAddr.c_str(), &n) < 1)
449 if (inet_aton(L->IPAddr.c_str(),&n) < 1)
457 SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L->IPAddr, *L, cached, start_type);
458 ServerInstance->AddResolver(sr, cached);
468 void SpanningTreeUtilities::ReadConfiguration(bool rebind)
470 ConfigReader* Conf = new ConfigReader(ServerInstance);
473 for (int j = 0; j < Conf->Enumerate("bind"); j++)
475 std::string Type = Conf->ReadValue("bind","type",j);
476 std::string IP = Conf->ReadValue("bind","address",j);
477 std::string Port = Conf->ReadValue("bind","port",j);
478 std::string transport = Conf->ReadValue("bind","transport",j);
479 if (Type == "servers")
481 irc::portparser portrange(Port, false);
483 while ((portno = portrange.GetToken()))
488 if ((!transport.empty()) && (hooks.find(transport.c_str()) == hooks.end()))
490 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?");
494 TreeSocket* listener = new TreeSocket(this, ServerInstance, IP.c_str(), portno, true, 10, transport.empty() ? NULL : hooks[transport.c_str()]);
495 if (listener->GetState() == I_LISTENING)
497 ServerInstance->Log(DEFAULT,"m_spanningtree: Binding server port %s:%d successful!", IP.c_str(), portno);
498 Bindings.push_back(listener);
502 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port: %s:%d: %s",IP.c_str(), portno, strerror(errno));
509 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
510 HideULines = Conf->ReadFlag("options","hideulines",0);
511 AnnounceTSChange = Conf->ReadFlag("options","announcets",0);
512 EnableTimeSync = Conf->ReadFlag("timesync","enable",0);
513 MasterTime = Conf->ReadFlag("timesync", "master", 0);
514 ChallengeResponse = !Conf->ReadFlag("options", "disablehmac", 0);
515 quiet_bursts = Conf->ReadFlag("options", "quietbursts", 0);
516 PingWarnTime = Conf->ReadInteger("options", "pingwarning", 0, true);
517 PingFreq = Conf->ReadInteger("options", "serverpingfreq", 0, true);
522 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
527 for (int j = 0; j < Conf->Enumerate("link"); j++)
530 std::string Allow = Conf->ReadValue("link", "allowmask", j);
531 L.Name = (Conf->ReadValue("link", "name", j)).c_str();
533 L.IPAddr = Conf->ReadValue("link", "ipaddr", j);
534 L.FailOver = Conf->ReadValue("link", "failover", j).c_str();
535 L.Port = Conf->ReadInteger("link", "port", j, true);
536 L.SendPass = Conf->ReadValue("link", "sendpass", j);
537 L.RecvPass = Conf->ReadValue("link", "recvpass", j);
538 L.AutoConnect = Conf->ReadInteger("link", "autoconnect", j, true);
539 L.HiddenFromStats = Conf->ReadFlag("link", "statshidden", j);
540 L.Timeout = Conf->ReadInteger("link", "timeout", j, true);
541 L.Hook = Conf->ReadValue("link", "transport", j);
542 L.Bind = Conf->ReadValue("link", "bind", j);
543 L.Hidden = Conf->ReadFlag("link", "hidden", j);
545 if ((!L.Hook.empty()) && (hooks.find(L.Hook.c_str()) == hooks.end()))
547 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.");
552 L.NextConnectTime = time(NULL) + L.AutoConnect;
553 /* Bugfix by brain, do not allow people to enter bad configurations */
554 if (L.Name != ServerInstance->Config->ServerName)
556 if ((!L.IPAddr.empty()) && (!L.RecvPass.empty()) && (!L.SendPass.empty()) && (!L.Name.empty()) && (L.Port))
558 if (L.Name.find('.') == std::string::npos)
559 throw CoreException("The link name '"+assign(L.Name)+"' is invalid and must contain at least one '.' character");
561 if (L.Name.length() > 64)
562 throw CoreException("The link name '"+assign(L.Name)+"' is longer than 64 characters!");
564 ValidIPs.push_back(L.IPAddr);
567 ValidIPs.push_back(Allow);
569 /* Needs resolving */
571 QueryType start_type = DNS_QUERY_A;
573 start_type = DNS_QUERY_AAAA;
574 if (strchr(L.IPAddr.c_str(),':'))
577 if (inet_pton(AF_INET6, L.IPAddr.c_str(), &n) < 1)
583 if (inet_aton(L.IPAddr.c_str(),&n) < 1)
588 if (inet_aton(L.IPAddr.c_str(),&n) < 1)
597 SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L.IPAddr, L, cached, start_type);
598 ServerInstance->AddResolver(sr, cached);
605 LinkBlocks.push_back(L);
609 if (L.IPAddr.empty())
611 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', IP address not defined!");
613 else if (L.RecvPass.empty())
615 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', recvpass not defined!");
617 else if (L.SendPass.empty())
619 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', sendpass not defined!");
621 else if (L.Name.empty())
623 throw CoreException("Invalid configuration, link tag without a name! IP address: "+L.IPAddr);
627 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', no port specified!");
633 throw CoreException("Invalid configuration for server '"+assign(L.Name)+"', link tag has the same server name as the local server!");
639 void SpanningTreeUtilities::DoFailOver(Link* x)
641 if (x->FailOver.length())
643 if (x->FailOver == x->Name)
645 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());
648 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
651 TreeServer* CheckDupe = this->FindServer(x->FailOver.c_str());
654 ServerInstance->Log(DEBUG,"Skipping existing failover: %s", x->FailOver.c_str());
658 Creator->RemoteMessage(NULL,"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
659 Creator->ConnectServer(TryThisOne);
664 Creator->RemoteMessage(NULL,"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
669 Link* SpanningTreeUtilities::FindLink(const std::string& name)
671 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
673 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))