2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007-2009 Craig Edwards <craigedwards@brainbox.cc>
6 * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
7 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
9 * This file is part of InspIRCd. InspIRCd is free software: you can
10 * redistribute it and/or modify it under the terms of the GNU General Public
11 * License as published by the Free Software Foundation, version 2.
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "treeserver.h"
28 #include "treesocket.h"
29 #include "resolvers.h"
30 #include "commandbuilder.h"
32 SpanningTreeUtilities* Utils = NULL;
34 ModResult ModuleSpanningTree::OnAcceptConnection(int newsock, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
36 if (!stdalgo::string::equalsci(from->bind_tag->getString("type"), "servers"))
37 return MOD_RES_PASSTHRU;
39 std::string incomingip = client->addr();
41 for (std::vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
43 if (*i == "*" || *i == incomingip || irc::sockets::cidr_mask(*i).match(*client))
45 /* we don't need to do anything with the pointer, creating it stores it in the necessary places */
46 new TreeSocket(newsock, from, client, server);
50 ServerInstance->SNO->WriteToSnoMask('l', "Server connection from %s denied (no link blocks with that IP address)", incomingip.c_str());
54 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
56 if (InspIRCd::IsSID(ServerName))
57 return this->FindServerID(ServerName);
59 server_hash::iterator iter = serverlist.find(ServerName);
60 if (iter != serverlist.end())
70 /** Find the first server matching a given glob mask.
71 * We iterate over the list and match each one until we get a hit.
73 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
75 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
77 if (InspIRCd::Match(i->first,ServerName))
83 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
85 server_hash::iterator iter = sidlist.find(id);
86 if (iter != sidlist.end())
92 TreeServer* SpanningTreeUtilities::FindRouteTarget(const std::string& target)
94 TreeServer* const server = FindServer(target);
98 User* const user = ServerInstance->FindNick(target);
100 return TreeServer::Get(user);
105 SpanningTreeUtilities::SpanningTreeUtilities(ModuleSpanningTree* C)
106 : Creator(C), TreeRoot(NULL)
107 , PingFreq(60) // XXX: TreeServer constructor reads this and TreeRoot is created before the config is read, so init it to something (value doesn't matter) to avoid a valgrind warning in TimerManager on unload
109 ServerInstance->Timers.AddTimer(&RefreshTimer);
112 CullResult SpanningTreeUtilities::cull()
114 const TreeServer::ChildServers& children = TreeRoot->GetChildren();
115 while (!children.empty())
117 TreeSocket* sock = children.front()->GetSocket();
121 for(TimeoutList::iterator i = timeoutlist.begin(); i != timeoutlist.end(); ++i)
123 TreeSocket* s = i->first;
128 return classbase::cull();
131 SpanningTreeUtilities::~SpanningTreeUtilities()
136 // Returns a list of DIRECT servers for a specific channel
137 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeSocketSet& list, char status, const CUList& exempt_list)
139 unsigned int minrank = 0;
142 PrefixMode* mh = ServerInstance->Modes->FindPrefix(status);
144 minrank = mh->GetPrefixRank();
147 TreeServer::ChildServers children = TreeRoot->GetChildren();
148 const Channel::MemberMap& ulist = c->GetUsers();
149 for (Channel::MemberMap::const_iterator i = ulist.begin(); i != ulist.end(); ++i)
151 if (IS_LOCAL(i->first))
154 if (minrank && i->second->getRank() < minrank)
157 if (exempt_list.find(i->first) == exempt_list.end())
159 TreeServer* best = TreeServer::Get(i->first);
160 list.insert(best->GetSocket());
162 TreeServer::ChildServers::iterator citer = std::find(children.begin(), children.end(), best);
163 if (citer != children.end())
164 children.erase(citer);
168 // Check whether the servers which do not have users in the channel might need this message. This
169 // is used to keep the chanhistory module synchronised between servers.
170 for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
173 FIRST_MOD_RESULT_CUSTOM(Creator->GetBroadcastEventProvider(), ServerProtocol::BroadcastEventListener, OnBroadcastMessage, result, (c, *i));
174 if (result == MOD_RES_ALLOW)
175 list.insert((*i)->GetSocket());
179 void SpanningTreeUtilities::DoOneToAllButSender(const CmdBuilder& params, TreeServer* omitroute)
181 const std::string& FullLine = params.str();
183 const TreeServer::ChildServers& children = TreeRoot->GetChildren();
184 for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
186 TreeServer* Route = *i;
187 // Send the line if the route isn't the path to the one to be omitted
188 if (Route != omitroute)
190 Route->GetSocket()->WriteLine(FullLine);
195 void SpanningTreeUtilities::DoOneToOne(const CmdBuilder& params, Server* server)
197 TreeServer* ts = static_cast<TreeServer*>(server);
198 TreeSocket* sock = ts->GetSocket();
200 sock->WriteLine(params);
203 void SpanningTreeUtilities::RefreshIPCache()
206 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
211 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Ignoring a link block without a port.");
212 /* Invalid link block */
216 ValidIPs.insert(ValidIPs.end(), L->AllowMasks.begin(), L->AllowMasks.end());
218 irc::sockets::sockaddrs dummy;
219 bool ipvalid = irc::sockets::aptosa(L->IPAddr, L->Port, dummy);
220 if ((L->IPAddr == "*") || (ipvalid))
221 ValidIPs.push_back(L->IPAddr);
222 else if (this->Creator->DNS)
224 SecurityIPResolver* sr = new SecurityIPResolver(Creator, *this->Creator->DNS, L->IPAddr, L, DNS::QUERY_AAAA);
227 this->Creator->DNS->Process(sr);
229 catch (DNS::Exception &)
237 void SpanningTreeUtilities::ReadConfiguration()
239 ConfigTag* security = ServerInstance->Config->ConfValue("security");
240 ConfigTag* options = ServerInstance->Config->ConfValue("options");
241 FlatLinks = security->getBool("flatlinks");
242 HideULines = security->getBool("hideulines");
243 HideSplits = security->getBool("hidesplits");
244 AnnounceTSChange = options->getBool("announcets");
245 AllowOptCommon = options->getBool("allowmismatch");
246 quiet_bursts = ServerInstance->Config->ConfValue("performance")->getBool("quietbursts");
247 PingWarnTime = options->getDuration("pingwarning", 15);
248 PingFreq = options->getDuration("serverpingfreq", 60, 1);
250 if (PingWarnTime >= PingFreq)
253 AutoconnectBlocks.clear();
255 ConfigTagList tags = ServerInstance->Config->ConfTags("link");
256 for(ConfigIter i = tags.first; i != tags.second; ++i)
258 ConfigTag* tag = i->second;
259 reference<Link> L = new Link(tag);
261 irc::spacesepstream sep = tag->getString("allowmask");
262 for (std::string s; sep.GetToken(s);)
263 L->AllowMasks.push_back(s);
265 L->Name = tag->getString("name");
266 L->IPAddr = tag->getString("ipaddr");
267 L->Port = tag->getUInt("port", 0);
268 L->SendPass = tag->getString("sendpass", tag->getString("password"));
269 L->RecvPass = tag->getString("recvpass", tag->getString("password"));
270 L->Fingerprint = tag->getString("fingerprint");
271 L->HiddenFromStats = tag->getBool("statshidden");
272 L->Timeout = tag->getDuration("timeout", 30);
273 L->Hook = tag->getString("ssl");
274 L->Bind = tag->getString("bind");
275 L->Hidden = tag->getBool("hidden");
278 throw ModuleException("Invalid configuration, found a link tag without a name!" + (!L->IPAddr.empty() ? " IP address: "+L->IPAddr : ""));
280 if (L->Name.find('.') == std::string::npos)
281 throw ModuleException("The link name '"+L->Name+"' is invalid as it must contain at least one '.' character");
283 if (L->Name.length() > ServerInstance->Config->Limits.MaxHost)
284 throw ModuleException("The link name '"+L->Name+"' is invalid as it is longer than " + ConvToStr(ServerInstance->Config->Limits.MaxHost) + " characters");
286 if (L->RecvPass.empty())
287 throw ModuleException("Invalid configuration for server '"+L->Name+"', recvpass not defined");
289 if (L->SendPass.empty())
290 throw ModuleException("Invalid configuration for server '"+L->Name+"', sendpass not defined");
292 if ((L->SendPass.find(' ') != std::string::npos) || (L->RecvPass.find(' ') != std::string::npos))
293 throw ModuleException("Link block '" + L->Name + "' has a password set that contains a space character which is invalid");
295 if ((L->SendPass[0] == ':') || (L->RecvPass[0] == ':'))
296 throw ModuleException("Link block '" + L->Name + "' has a password set that begins with a colon (:) which is invalid");
298 if (L->IPAddr.empty())
301 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Configuration warning: Link block '" + L->Name + "' has no IP defined! This will allow any IP to connect as this server, and MAY not be what you want.");
304 if (!L->Port && L->IPAddr.find('/') == std::string::npos)
305 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Configuration warning: Link block '" + L->Name + "' has no port defined, you will not be able to /connect it.");
307 L->Fingerprint.erase(std::remove(L->Fingerprint.begin(), L->Fingerprint.end(), ':'), L->Fingerprint.end());
308 LinkBlocks.push_back(L);
311 tags = ServerInstance->Config->ConfTags("autoconnect");
312 for(ConfigIter i = tags.first; i != tags.second; ++i)
314 ConfigTag* tag = i->second;
315 reference<Autoconnect> A = new Autoconnect(tag);
316 A->Period = tag->getDuration("period", 60, 1);
317 A->NextConnectTime = ServerInstance->Time() + A->Period;
319 irc::spacesepstream ss(tag->getString("server"));
321 while (ss.GetToken(server))
323 A->servers.push_back(server);
326 if (A->servers.empty())
328 throw ModuleException("Invalid configuration for autoconnect, server cannot be empty!");
331 AutoconnectBlocks.push_back(A);
334 for (server_hash::const_iterator i = serverlist.begin(); i != serverlist.end(); ++i)
335 i->second->CheckULine();
340 Link* SpanningTreeUtilities::FindLink(const std::string& name)
342 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
345 if (InspIRCd::Match(x->Name, name, ascii_case_insensitive_map))
353 void SpanningTreeUtilities::SendChannelMessage(User* source, Channel* target, const std::string& text, char status, const ClientProtocol::TagMap& tags, const CUList& exempt_list, const char* message_type, TreeSocket* omit)
355 CmdBuilder msg(source, message_type);
359 msg.push_raw(status);
360 msg.push_raw(target->name);
365 this->GetListOfServersForChannel(target, list, status, exempt_list);
366 for (TreeSocketSet::iterator i = list.begin(); i != list.end(); ++i)
368 TreeSocket* Sock = *i;
370 Sock->WriteLine(msg);