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 /* Create server sockets off a listener. */
32 ModResult ModuleSpanningTree::OnAcceptConnection(int newsock, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
34 if (from->bind_tag->getString("type") != "servers")
35 return MOD_RES_PASSTHRU;
37 std::string incomingip = client->addr();
39 for (std::vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
41 if (*i == "*" || *i == incomingip || irc::sockets::cidr_mask(*i).match(*client))
43 /* we don't need to do anything with the pointer, creating it stores it in the necessary places */
44 new TreeSocket(Utils, newsock, from, client, server);
48 ServerInstance->SNO->WriteToSnoMask('l', "Server connection from %s denied (no link blocks with that IP address)", incomingip.c_str());
52 /** Yay for fast searches!
53 * This is hundreds of times faster than recursion
54 * or even scanning a linked list, especially when
55 * there are more than a few servers to deal with.
58 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
60 if (InspIRCd::IsSID(ServerName))
61 return this->FindServerID(ServerName);
63 server_hash::iterator iter = serverlist.find(ServerName.c_str());
64 if (iter != serverlist.end())
74 /** Returns the locally connected server we must route a
75 * message through to reach server 'ServerName'. This
76 * only applies to one-to-one and not one-to-many routing.
77 * See the comments for the constructor of TreeServer
80 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
82 if (ServerName.c_str() == TreeRoot->GetName() || ServerName == ServerInstance->Config->GetSID())
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 : RefreshTimer(this), Creator(C)
132 ServerInstance->Timers->AddTimer(&RefreshTimer);
133 ServerInstance->Logs->Log("m_spanningtree", LOG_DEBUG, "***** Using SID for hash: %s *****", ServerInstance->Config->GetSID().c_str());
135 this->TreeRoot = new TreeServer(this, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc, ServerInstance->Config->GetSID());
136 this->ReadConfiguration();
139 CullResult SpanningTreeUtilities::cull()
141 while (TreeRoot->ChildCount())
143 TreeServer* child_server = TreeRoot->GetChild(0);
146 TreeSocket* sock = child_server->GetSocket();
151 for(std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = timeoutlist.begin(); i != timeoutlist.end(); ++i)
153 TreeSocket* s = i->first;
158 return classbase::cull();
161 SpanningTreeUtilities::~SpanningTreeUtilities()
166 /* returns a list of DIRECT servernames for a specific channel */
167 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list)
169 unsigned int minrank = 0;
172 ModeHandler* mh = ServerInstance->Modes->FindPrefix(status);
174 minrank = mh->GetPrefixRank();
177 const UserMembList *ulist = c->GetUsers();
179 for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
181 if (IS_LOCAL(i->first))
184 if (minrank && i->second->getRank() < minrank)
187 if (exempt_list.find(i->first) == exempt_list.end())
189 TreeServer* best = this->BestRouteTo(i->first->server);
197 std::string SpanningTreeUtilities::ConstructLine(const std::string& prefix, const std::string& command, const parameterlist& params)
199 std::string FullLine;
200 FullLine.reserve(1024);
201 FullLine = ":" + prefix + " " + command;
202 for (parameterlist::const_iterator x = params.begin(); x != params.end(); ++x)
204 FullLine.push_back(' ');
210 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string& prefix, const std::string& command, const parameterlist& params, const std::string& omit)
212 TreeServer* omitroute = this->BestRouteTo(omit);
213 std::string FullLine = ConstructLine(prefix, command, params);
215 unsigned int items = this->TreeRoot->ChildCount();
216 for (unsigned int x = 0; x < items; x++)
218 TreeServer* Route = this->TreeRoot->GetChild(x);
220 // The route has a socket (its a direct connection)
221 // The route isnt the one to be omitted
222 // The route isnt the path to the one to be omitted
223 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
225 TreeSocket* Sock = Route->GetSocket();
227 Sock->WriteLine(FullLine);
233 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, const parameterlist ¶ms)
235 std::string FullLine = ConstructLine(prefix, command, params);
237 unsigned int items = this->TreeRoot->ChildCount();
238 for (unsigned int x = 0; x < items; x++)
240 TreeServer* Route = this->TreeRoot->GetChild(x);
241 if (Route && Route->GetSocket())
243 TreeSocket* Sock = Route->GetSocket();
245 Sock->WriteLine(FullLine);
251 bool SpanningTreeUtilities::DoOneToOne(const std::string& prefix, const std::string& command, const parameterlist& params, const std::string& target)
253 TreeServer* Route = this->BestRouteTo(target);
256 if (Route && Route->GetSocket())
258 TreeSocket* Sock = Route->GetSocket();
260 Sock->WriteLine(ConstructLine(prefix, command, params));
270 void SpanningTreeUtilities::RefreshIPCache()
273 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
278 ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "m_spanningtree: Ignoring a link block without a port.");
279 /* Invalid link block */
283 if (L->AllowMask.length())
284 ValidIPs.push_back(L->AllowMask);
286 irc::sockets::sockaddrs dummy;
287 bool ipvalid = irc::sockets::aptosa(L->IPAddr, L->Port, dummy);
288 if ((L->IPAddr == "*") || (ipvalid))
289 ValidIPs.push_back(L->IPAddr);
290 else if (this->Creator->DNS)
292 SecurityIPResolver* sr = new SecurityIPResolver(Creator, this, *this->Creator->DNS, L->IPAddr, L, DNS::QUERY_AAAA);
295 this->Creator->DNS->Process(sr);
297 catch (DNS::Exception &)
305 void SpanningTreeUtilities::ReadConfiguration()
307 ConfigTag* security = ServerInstance->Config->ConfValue("security");
308 ConfigTag* options = ServerInstance->Config->ConfValue("options");
309 FlatLinks = security->getBool("flatlinks");
310 HideULines = security->getBool("hideulines");
311 AnnounceTSChange = options->getBool("announcets");
312 AllowOptCommon = options->getBool("allowmismatch");
313 ChallengeResponse = !security->getBool("disablehmac");
314 quiet_bursts = ServerInstance->Config->ConfValue("performance")->getBool("quietbursts");
315 PingWarnTime = options->getInt("pingwarning");
316 PingFreq = options->getInt("serverpingfreq");
321 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
324 AutoconnectBlocks.clear();
326 ConfigTagList tags = ServerInstance->Config->ConfTags("link");
327 for(ConfigIter i = tags.first; i != tags.second; ++i)
329 ConfigTag* tag = i->second;
330 reference<Link> L = new Link(tag);
331 std::string linkname = tag->getString("name");
332 L->Name = linkname.c_str();
333 L->AllowMask = tag->getString("allowmask");
334 L->IPAddr = tag->getString("ipaddr");
335 L->Port = tag->getInt("port");
336 L->SendPass = tag->getString("sendpass", tag->getString("password"));
337 L->RecvPass = tag->getString("recvpass", tag->getString("password"));
338 L->Fingerprint = tag->getString("fingerprint");
339 L->HiddenFromStats = tag->getBool("statshidden");
340 L->Timeout = tag->getInt("timeout", 30);
341 L->Hook = tag->getString("ssl");
342 L->Bind = tag->getString("bind");
343 L->Hidden = tag->getBool("hidden");
346 throw ModuleException("Invalid configuration, found a link tag without a name!" + (!L->IPAddr.empty() ? " IP address: "+L->IPAddr : ""));
348 if (L->Name.find('.') == std::string::npos)
349 throw ModuleException("The link name '"+assign(L->Name)+"' is invalid as it must contain at least one '.' character");
351 if (L->Name.length() > 64)
352 throw ModuleException("The link name '"+assign(L->Name)+"' is invalid as it is longer than 64 characters");
354 if (L->RecvPass.empty())
355 throw ModuleException("Invalid configuration for server '"+assign(L->Name)+"', recvpass not defined");
357 if (L->SendPass.empty())
358 throw ModuleException("Invalid configuration for server '"+assign(L->Name)+"', sendpass not defined");
360 if ((L->SendPass.find(' ') != std::string::npos) || (L->RecvPass.find(' ') != std::string::npos))
361 throw ModuleException("Link block '" + assign(L->Name) + "' has a password set that contains a space character which is invalid");
363 if ((L->SendPass[0] == ':') || (L->RecvPass[0] == ':'))
364 throw ModuleException("Link block '" + assign(L->Name) + "' has a password set that begins with a colon (:) which is invalid");
366 if (L->IPAddr.empty())
369 ServerInstance->Logs->Log("m_spanningtree", 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.");
373 ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Configuration warning: Link block '" + assign(L->Name) + "' has no port defined, you will not be able to /connect it.");
375 L->Fingerprint.erase(std::remove(L->Fingerprint.begin(), L->Fingerprint.end(), ':'), L->Fingerprint.end());
376 LinkBlocks.push_back(L);
379 tags = ServerInstance->Config->ConfTags("autoconnect");
380 for(ConfigIter i = tags.first; i != tags.second; ++i)
382 ConfigTag* tag = i->second;
383 reference<Autoconnect> A = new Autoconnect(tag);
384 A->Period = tag->getInt("period");
385 A->NextConnectTime = ServerInstance->Time() + A->Period;
387 irc::spacesepstream ss(tag->getString("server"));
389 while (ss.GetToken(server))
391 A->servers.push_back(server);
396 throw ModuleException("Invalid configuration for autoconnect, period not a positive integer!");
399 if (A->servers.empty())
401 throw ModuleException("Invalid configuration for autoconnect, server cannot be empty!");
404 AutoconnectBlocks.push_back(A);
410 Link* SpanningTreeUtilities::FindLink(const std::string& name)
412 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
415 if (InspIRCd::Match(x->Name.c_str(), name.c_str()))
423 void SpanningTreeUtilities::SendChannelMessage(const std::string& prefix, Channel* target, const std::string &text, char status, const CUList& exempt_list, const char* message_type)
425 std::string raw(":");
426 raw.append(prefix).append(1, ' ').append(message_type).push_back(' ');
428 raw.push_back(status);
429 raw.append(target->name).append(" :").append(text);
432 this->GetListOfServersForChannel(target, list, status, exempt_list);
433 for (TreeServerList::iterator i = list.begin(); i != list.end(); ++i)
435 TreeSocket* Sock = (*i)->GetSocket();
437 Sock->WriteLine(raw);