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/>.
26 #include "socketengine.h"
30 #include "treeserver.h"
32 #include "treesocket.h"
33 #include "resolvers.h"
35 /* Create server sockets off a listener. */
36 ModResult ModuleSpanningTree::OnAcceptConnection(int newsock, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
38 if (from->bind_tag->getString("type") != "servers")
39 return MOD_RES_PASSTHRU;
41 std::string incomingip = client->addr();
43 for (std::vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
45 if (*i == "*" || *i == incomingip || irc::sockets::cidr_mask(*i).match(*client))
47 /* we don't need to do anything with the pointer, creating it stores it in the necessary places */
48 new TreeSocket(Utils, newsock, from, client, server);
52 ServerInstance->SNO->WriteToSnoMask('l', "Server connection from %s denied (no link blocks with that IP address)", incomingip.c_str());
56 /** Yay for fast searches!
57 * This is hundreds of times faster than recursion
58 * or even scanning a linked list, especially when
59 * there are more than a few servers to deal with.
62 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
64 if (InspIRCd::IsSID(ServerName))
65 return this->FindServerID(ServerName);
67 server_hash::iterator iter = serverlist.find(ServerName.c_str());
68 if (iter != serverlist.end())
78 /** Returns the locally connected server we must route a
79 * message through to reach server 'ServerName'. This
80 * only applies to one-to-one and not one-to-many routing.
81 * See the comments for the constructor of TreeServer
84 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
86 if (ServerName.c_str() == TreeRoot->GetName() || ServerName == ServerInstance->Config->GetSID())
88 TreeServer* Found = FindServer(ServerName);
91 return Found->GetRoute();
95 // Cheat a bit. This allows for (better) working versions of routing commands with nick based prefixes, without hassle
96 User *u = ServerInstance->FindNick(ServerName);
99 Found = FindServer(u->server);
101 return Found->GetRoute();
108 /** Find the first server matching a given glob mask.
109 * Theres no find-using-glob method of hash_map [awwww :-(]
110 * so instead, we iterate over the list using an iterator
111 * and match each one until we get a hit. Yes its slow,
114 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
116 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
118 if (InspIRCd::Match(i->first,ServerName))
124 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
126 server_hash::iterator iter = sidlist.find(id);
127 if (iter != sidlist.end())
133 SpanningTreeUtilities::SpanningTreeUtilities(ModuleSpanningTree* C) : Creator(C)
135 ServerInstance->Logs->Log("m_spanningtree",LOG_DEBUG,"***** Using SID for hash: %s *****", ServerInstance->Config->GetSID().c_str());
137 this->TreeRoot = new TreeServer(this, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc, ServerInstance->Config->GetSID());
138 this->ReadConfiguration();
141 CullResult SpanningTreeUtilities::cull()
143 while (TreeRoot->ChildCount())
145 TreeServer* child_server = TreeRoot->GetChild(0);
148 TreeSocket* sock = child_server->GetSocket();
153 for(std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = timeoutlist.begin(); i != timeoutlist.end(); ++i)
155 TreeSocket* s = i->first;
160 return classbase::cull();
163 SpanningTreeUtilities::~SpanningTreeUtilities()
168 /* returns a list of DIRECT servernames for a specific channel */
169 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list)
171 unsigned int minrank = 0;
174 ModeHandler* mh = ServerInstance->Modes->FindPrefix(status);
176 minrank = mh->GetPrefixRank();
179 const UserMembList *ulist = c->GetUsers();
181 for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
183 if (IS_LOCAL(i->first))
186 if (minrank && i->second->getRank() < minrank)
189 if (exempt_list.find(i->first) == exempt_list.end())
191 TreeServer* best = this->BestRouteTo(i->first->server);
199 std::string SpanningTreeUtilities::ConstructLine(const std::string& prefix, const std::string& command, const parameterlist& params)
201 std::string FullLine;
202 FullLine.reserve(MAXBUF);
203 FullLine = ":" + prefix + " " + command;
204 for (parameterlist::const_iterator x = params.begin(); x != params.end(); ++x)
206 FullLine.push_back(' ');
212 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string& prefix, const std::string& command, const parameterlist& params, const std::string& omit)
214 TreeServer* omitroute = this->BestRouteTo(omit);
215 std::string FullLine = ConstructLine(prefix, command, params);
217 unsigned int items = this->TreeRoot->ChildCount();
218 for (unsigned int x = 0; x < items; x++)
220 TreeServer* Route = this->TreeRoot->GetChild(x);
222 // The route has a socket (its a direct connection)
223 // The route isnt the one to be omitted
224 // The route isnt the path to the one to be omitted
225 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
227 TreeSocket* Sock = Route->GetSocket();
229 Sock->WriteLine(FullLine);
235 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, const parameterlist ¶ms)
237 std::string FullLine = ConstructLine(prefix, command, params);
239 unsigned int items = this->TreeRoot->ChildCount();
240 for (unsigned int x = 0; x < items; x++)
242 TreeServer* Route = this->TreeRoot->GetChild(x);
243 if (Route && Route->GetSocket())
245 TreeSocket* Sock = Route->GetSocket();
247 Sock->WriteLine(FullLine);
253 bool SpanningTreeUtilities::DoOneToOne(const std::string& prefix, const std::string& command, const parameterlist& params, const std::string& target)
255 TreeServer* Route = this->BestRouteTo(target);
258 if (Route && Route->GetSocket())
260 TreeSocket* Sock = Route->GetSocket();
262 Sock->WriteLine(ConstructLine(prefix, command, params));
272 void SpanningTreeUtilities::RefreshIPCache()
275 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
280 ServerInstance->Logs->Log("m_spanningtree",LOG_DEFAULT,"m_spanningtree: Ignoring a link block without a port.");
281 /* Invalid link block */
285 if (L->AllowMask.length())
286 ValidIPs.push_back(L->AllowMask);
288 irc::sockets::sockaddrs dummy;
289 bool ipvalid = irc::sockets::aptosa(L->IPAddr, L->Port, dummy);
290 if ((L->IPAddr == "*") || (ipvalid))
291 ValidIPs.push_back(L->IPAddr);
297 SecurityIPResolver* sr = new SecurityIPResolver(Creator, this, L->IPAddr, L, cached, DNS_QUERY_AAAA);
298 ServerInstance->AddResolver(sr, cached);
307 void SpanningTreeUtilities::ReadConfiguration()
309 ConfigTag* security = ServerInstance->Config->ConfValue("security");
310 ConfigTag* options = ServerInstance->Config->ConfValue("options");
311 FlatLinks = security->getBool("flatlinks");
312 HideULines = security->getBool("hideulines");
313 AnnounceTSChange = options->getBool("announcets");
314 AllowOptCommon = options->getBool("allowmismatch");
315 ChallengeResponse = !security->getBool("disablehmac");
316 quiet_bursts = ServerInstance->Config->ConfValue("performance")->getBool("quietbursts");
317 PingWarnTime = options->getInt("pingwarning");
318 PingFreq = options->getInt("serverpingfreq");
323 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
326 AutoconnectBlocks.clear();
328 ConfigTagList tags = ServerInstance->Config->ConfTags("link");
329 for(ConfigIter i = tags.first; i != tags.second; ++i)
331 ConfigTag* tag = i->second;
332 reference<Link> L = new Link(tag);
333 std::string linkname = tag->getString("name");
334 L->Name = linkname.c_str();
335 L->AllowMask = tag->getString("allowmask");
336 L->IPAddr = tag->getString("ipaddr");
337 L->Port = tag->getInt("port");
338 L->SendPass = tag->getString("sendpass", tag->getString("password"));
339 L->RecvPass = tag->getString("recvpass", tag->getString("password"));
340 L->Fingerprint = tag->getString("fingerprint");
341 L->HiddenFromStats = tag->getBool("statshidden");
342 L->Timeout = tag->getInt("timeout", 30);
343 L->Hook = tag->getString("ssl");
344 L->Bind = tag->getString("bind");
345 L->Hidden = tag->getBool("hidden");
348 throw ModuleException("Invalid configuration, found a link tag without a name!" + (!L->IPAddr.empty() ? " IP address: "+L->IPAddr : ""));
350 if (L->Name.find('.') == std::string::npos)
351 throw ModuleException("The link name '"+assign(L->Name)+"' is invalid as it must contain at least one '.' character");
353 if (L->Name.length() > 64)
354 throw ModuleException("The link name '"+assign(L->Name)+"' is invalid as it is longer than 64 characters");
356 if (L->RecvPass.empty())
357 throw ModuleException("Invalid configuration for server '"+assign(L->Name)+"', recvpass not defined");
359 if (L->SendPass.empty())
360 throw ModuleException("Invalid configuration for server '"+assign(L->Name)+"', sendpass not defined");
362 if ((L->SendPass.find(' ') != std::string::npos) || (L->RecvPass.find(' ') != std::string::npos))
363 throw ModuleException("Link block '" + assign(L->Name) + "' has a password set that contains a space character which is invalid");
365 if ((L->SendPass[0] == ':') || (L->RecvPass[0] == ':'))
366 throw ModuleException("Link block '" + assign(L->Name) + "' has a password set that begins with a colon (:) which is invalid");
368 if (L->IPAddr.empty())
371 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.");
375 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.");
377 L->Fingerprint.erase(std::remove(L->Fingerprint.begin(), L->Fingerprint.end(), ':'), L->Fingerprint.end());
378 LinkBlocks.push_back(L);
381 tags = ServerInstance->Config->ConfTags("autoconnect");
382 for(ConfigIter i = tags.first; i != tags.second; ++i)
384 ConfigTag* tag = i->second;
385 reference<Autoconnect> A = new Autoconnect(tag);
386 A->Period = tag->getInt("period");
387 A->NextConnectTime = ServerInstance->Time() + A->Period;
389 irc::spacesepstream ss(tag->getString("server"));
391 while (ss.GetToken(server))
393 A->servers.push_back(server);
398 throw ModuleException("Invalid configuration for autoconnect, period not a positive integer!");
401 if (A->servers.empty())
403 throw ModuleException("Invalid configuration for autoconnect, server cannot be empty!");
406 AutoconnectBlocks.push_back(A);
412 Link* SpanningTreeUtilities::FindLink(const std::string& name)
414 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
417 if (InspIRCd::Match(x->Name.c_str(), name.c_str()))
425 void SpanningTreeUtilities::SendChannelMessage(const std::string& prefix, Channel* target, const std::string &text, char status, const CUList& exempt_list, const char* message_type)
427 std::string raw(":");
428 raw.append(prefix).append(1, ' ').append(message_type).push_back(' ');
430 raw.push_back(status);
431 raw.append(target->name).append(" :").append(text);
434 this->GetListOfServersForChannel(target, list, status, exempt_list);
435 for (TreeServerList::iterator i = list.begin(); i != list.end(); ++i)
437 TreeSocket* Sock = (*i)->GetSocket();
439 Sock->WriteLine(raw);