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"
31 SpanningTreeUtilities* Utils = NULL;
33 /* Create server sockets off a listener. */
34 ModResult ModuleSpanningTree::OnAcceptConnection(int newsock, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
36 if (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 /** Yay for fast searches!
55 * This is hundreds of times faster than recursion
56 * or even scanning a linked list, especially when
57 * there are more than a few servers to deal with.
60 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
62 if (InspIRCd::IsSID(ServerName))
63 return this->FindServerID(ServerName);
65 server_hash::iterator iter = serverlist.find(ServerName);
66 if (iter != serverlist.end())
76 /** Returns the locally connected server we must route a
77 * message through to reach server 'ServerName'. This
78 * only applies to one-to-one and not one-to-many routing.
79 * See the comments for the constructor of TreeServer
82 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
84 TreeServer* Found = FindServer(ServerName);
87 return Found->GetRoute();
91 // Cheat a bit. This allows for (better) working versions of routing commands with nick based prefixes, without hassle
92 User *u = ServerInstance->FindNick(ServerName);
95 Found = FindServer(u->server);
97 return Found->GetRoute();
104 /** Find the first server matching a given glob mask.
105 * Theres no find-using-glob method of hash_map [awwww :-(]
106 * so instead, we iterate over the list using an iterator
107 * and match each one until we get a hit. Yes its slow,
110 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
112 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
114 if (InspIRCd::Match(i->first,ServerName))
120 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
122 server_hash::iterator iter = sidlist.find(id);
123 if (iter != sidlist.end())
129 SpanningTreeUtilities::SpanningTreeUtilities(ModuleSpanningTree* C)
130 : Creator(C), TreeRoot(NULL)
132 ServerInstance->Timers->AddTimer(&RefreshTimer);
134 this->ReadConfiguration();
137 CullResult SpanningTreeUtilities::cull()
139 const TreeServer::ChildServers& children = TreeRoot->GetChildren();
140 while (!children.empty())
142 TreeSocket* sock = children.front()->GetSocket();
146 for(std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = timeoutlist.begin(); i != timeoutlist.end(); ++i)
148 TreeSocket* s = i->first;
153 return classbase::cull();
156 SpanningTreeUtilities::~SpanningTreeUtilities()
161 /* returns a list of DIRECT servernames for a specific channel */
162 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeSocketSet& list, char status, const CUList& exempt_list)
164 unsigned int minrank = 0;
167 ModeHandler* mh = ServerInstance->Modes->FindPrefix(status);
169 minrank = mh->GetPrefixRank();
172 const UserMembList *ulist = c->GetUsers();
174 for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
176 if (IS_LOCAL(i->first))
179 if (minrank && i->second->getRank() < minrank)
182 if (exempt_list.find(i->first) == exempt_list.end())
184 TreeServer* best = this->BestRouteTo(i->first->server);
186 list.insert(best->GetSocket());
192 std::string SpanningTreeUtilities::ConstructLine(const std::string& prefix, const std::string& command, const parameterlist& params)
194 std::string FullLine;
195 FullLine.reserve(1024);
196 FullLine = ":" + prefix + " " + command;
197 for (parameterlist::const_iterator x = params.begin(); x != params.end(); ++x)
199 FullLine.push_back(' ');
205 void SpanningTreeUtilities::DoOneToAllButSender(const std::string& prefix, const std::string& command, const parameterlist& params, TreeServer* omitroute)
207 std::string FullLine = ConstructLine(prefix, command, params);
209 const TreeServer::ChildServers& children = TreeRoot->GetChildren();
210 for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
212 TreeServer* Route = *i;
213 // Send the line if the route isn't the path to the one to be omitted
214 if (Route != omitroute)
216 Route->GetSocket()->WriteLine(FullLine);
221 bool SpanningTreeUtilities::DoOneToOne(const std::string& prefix, const std::string& command, const parameterlist& params, const std::string& target)
223 TreeServer* Route = this->BestRouteTo(target);
227 Route->GetSocket()->WriteLine(ConstructLine(prefix, command, params));
231 void SpanningTreeUtilities::RefreshIPCache()
234 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
239 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Ignoring a link block without a port.");
240 /* Invalid link block */
244 if (L->AllowMask.length())
245 ValidIPs.push_back(L->AllowMask);
247 irc::sockets::sockaddrs dummy;
248 bool ipvalid = irc::sockets::aptosa(L->IPAddr, L->Port, dummy);
249 if ((L->IPAddr == "*") || (ipvalid))
250 ValidIPs.push_back(L->IPAddr);
251 else if (this->Creator->DNS)
253 SecurityIPResolver* sr = new SecurityIPResolver(Creator, *this->Creator->DNS, L->IPAddr, L, DNS::QUERY_AAAA);
256 this->Creator->DNS->Process(sr);
258 catch (DNS::Exception &)
266 void SpanningTreeUtilities::ReadConfiguration()
268 ConfigTag* security = ServerInstance->Config->ConfValue("security");
269 ConfigTag* options = ServerInstance->Config->ConfValue("options");
270 FlatLinks = security->getBool("flatlinks");
271 HideULines = security->getBool("hideulines");
272 AnnounceTSChange = options->getBool("announcets");
273 AllowOptCommon = options->getBool("allowmismatch");
274 ChallengeResponse = !security->getBool("disablehmac");
275 quiet_bursts = ServerInstance->Config->ConfValue("performance")->getBool("quietbursts");
276 PingWarnTime = options->getInt("pingwarning");
277 PingFreq = options->getInt("serverpingfreq");
282 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
285 AutoconnectBlocks.clear();
287 ConfigTagList tags = ServerInstance->Config->ConfTags("link");
288 for(ConfigIter i = tags.first; i != tags.second; ++i)
290 ConfigTag* tag = i->second;
291 reference<Link> L = new Link(tag);
292 std::string linkname = tag->getString("name");
293 L->Name = linkname.c_str();
294 L->AllowMask = tag->getString("allowmask");
295 L->IPAddr = tag->getString("ipaddr");
296 L->Port = tag->getInt("port");
297 L->SendPass = tag->getString("sendpass", tag->getString("password"));
298 L->RecvPass = tag->getString("recvpass", tag->getString("password"));
299 L->Fingerprint = tag->getString("fingerprint");
300 L->HiddenFromStats = tag->getBool("statshidden");
301 L->Timeout = tag->getDuration("timeout", 30);
302 L->Hook = tag->getString("ssl");
303 L->Bind = tag->getString("bind");
304 L->Hidden = tag->getBool("hidden");
307 throw ModuleException("Invalid configuration, found a link tag without a name!" + (!L->IPAddr.empty() ? " IP address: "+L->IPAddr : ""));
309 if (L->Name.find('.') == std::string::npos)
310 throw ModuleException("The link name '"+assign(L->Name)+"' is invalid as it must contain at least one '.' character");
312 if (L->Name.length() > 64)
313 throw ModuleException("The link name '"+assign(L->Name)+"' is invalid as it is longer than 64 characters");
315 if (L->RecvPass.empty())
316 throw ModuleException("Invalid configuration for server '"+assign(L->Name)+"', recvpass not defined");
318 if (L->SendPass.empty())
319 throw ModuleException("Invalid configuration for server '"+assign(L->Name)+"', sendpass not defined");
321 if ((L->SendPass.find(' ') != std::string::npos) || (L->RecvPass.find(' ') != std::string::npos))
322 throw ModuleException("Link block '" + assign(L->Name) + "' has a password set that contains a space character which is invalid");
324 if ((L->SendPass[0] == ':') || (L->RecvPass[0] == ':'))
325 throw ModuleException("Link block '" + assign(L->Name) + "' has a password set that begins with a colon (:) which is invalid");
327 if (L->IPAddr.empty())
330 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Configuration warning: Link block '" + assign(L->Name) + "' has no IP defined! This will allow any IP to connect as this server, and MAY not be what you want.");
334 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Configuration warning: Link block '" + assign(L->Name) + "' has no port defined, you will not be able to /connect it.");
336 L->Fingerprint.erase(std::remove(L->Fingerprint.begin(), L->Fingerprint.end(), ':'), L->Fingerprint.end());
337 LinkBlocks.push_back(L);
340 tags = ServerInstance->Config->ConfTags("autoconnect");
341 for(ConfigIter i = tags.first; i != tags.second; ++i)
343 ConfigTag* tag = i->second;
344 reference<Autoconnect> A = new Autoconnect(tag);
345 A->Period = tag->getDuration("period", 60, 1);
346 A->NextConnectTime = ServerInstance->Time() + A->Period;
348 irc::spacesepstream ss(tag->getString("server"));
350 while (ss.GetToken(server))
352 A->servers.push_back(server);
355 if (A->servers.empty())
357 throw ModuleException("Invalid configuration for autoconnect, server cannot be empty!");
360 AutoconnectBlocks.push_back(A);
366 Link* SpanningTreeUtilities::FindLink(const std::string& name)
368 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
371 if (InspIRCd::Match(x->Name.c_str(), name.c_str()))
379 void SpanningTreeUtilities::SendChannelMessage(const std::string& prefix, Channel* target, const std::string& text, char status, const CUList& exempt_list, const char* message_type, TreeSocket* omit)
381 std::string raw(":");
382 raw.append(prefix).append(1, ' ').append(message_type).push_back(' ');
384 raw.push_back(status);
385 raw.append(target->name).append(" :").append(text);
388 this->GetListOfServersForChannel(target, list, status, exempt_list);
389 for (TreeSocketSet::iterator i = list.begin(); i != list.end(); ++i)
391 TreeSocket* Sock = *i;
393 Sock->WriteLine(raw);