1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2010 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
17 #include "socketengine.h"
21 #include "treeserver.h"
23 #include "treesocket.h"
24 #include "resolvers.h"
26 /* Create server sockets off a listener. */
27 ModResult ModuleSpanningTree::OnAcceptConnection(int newsock, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
29 if (from->bind_tag->getString("type") != "servers")
30 return MOD_RES_PASSTHRU;
32 std::string incomingip = client->addr();
34 for (std::vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
36 if (*i == "*" || *i == incomingip || irc::sockets::cidr_mask(*i).match(*client))
38 /* we don't need to do anything with the pointer, creating it stores it in the necessary places */
39 new TreeSocket(Utils, newsock, from, client, server);
43 ServerInstance->SNO->WriteToSnoMask('l', "Server connection from %s denied (no link blocks with that IP address)", incomingip.c_str());
47 /** Yay for fast searches!
48 * This is hundreds of times faster than recursion
49 * or even scanning a linked list, especially when
50 * there are more than a few servers to deal with.
53 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
55 if (ServerInstance->IsSID(ServerName))
56 return this->FindServerID(ServerName);
58 server_hash::iterator iter = serverlist.find(ServerName.c_str());
59 if (iter != serverlist.end())
69 /** Returns the locally connected server we must route a
70 * message through to reach server 'ServerName'. This
71 * only applies to one-to-one and not one-to-many routing.
72 * See the comments for the constructor of TreeServer
75 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
77 if (ServerName.c_str() == TreeRoot->GetName() || ServerName == ServerInstance->Config->GetSID())
79 TreeServer* Found = FindServer(ServerName);
82 return Found->GetRoute();
86 // Cheat a bit. This allows for (better) working versions of routing commands with nick based prefixes, without hassle
87 User *u = ServerInstance->FindNick(ServerName);
90 Found = FindServer(u->server);
92 return Found->GetRoute();
99 /** Find the first server matching a given glob mask.
100 * Theres no find-using-glob method of hash_map [awwww :-(]
101 * so instead, we iterate over the list using an iterator
102 * and match each one until we get a hit. Yes its slow,
105 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
107 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
109 if (InspIRCd::Match(i->first,ServerName))
115 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
117 server_hash::iterator iter = sidlist.find(id);
118 if (iter != sidlist.end())
124 /* A convenient wrapper that returns true if a server exists */
125 bool SpanningTreeUtilities::IsServer(const std::string &ServerName)
127 return (FindServer(ServerName) != NULL);
130 SpanningTreeUtilities::SpanningTreeUtilities(ModuleSpanningTree* C) : Creator(C)
132 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"***** Using SID for hash: %s *****", ServerInstance->Config->GetSID().c_str());
134 this->TreeRoot = new TreeServer(this, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc, ServerInstance->Config->GetSID());
135 this->ReadConfiguration();
138 CullResult SpanningTreeUtilities::cull()
140 while (TreeRoot->ChildCount())
142 TreeServer* child_server = TreeRoot->GetChild(0);
145 TreeSocket* sock = child_server->GetSocket();
147 ServerInstance->GlobalCulls.AddItem(sock);
151 for(std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = timeoutlist.begin(); i != timeoutlist.end(); ++i)
153 TreeSocket* s = i->first;
154 ServerInstance->GlobalCulls.AddItem(s);
158 return classbase::cull();
161 SpanningTreeUtilities::~SpanningTreeUtilities()
166 void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list)
168 if (list.find(server) == list.end())
169 list[server] = server;
172 /* returns a list of DIRECT servernames for a specific channel */
173 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list)
175 const UserMembList *ulist = c->GetUsers();
177 for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
179 if (IS_LOCAL(i->first))
182 if (status && !strchr(c->GetAllPrefixChars(i->first), status))
185 if (exempt_list.find(i->first) == exempt_list.end())
187 TreeServer* best = this->BestRouteTo(i->first->server);
189 AddThisServer(best,list);
195 bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, parameterlist ¶ms)
197 TreeServer* omitroute = this->BestRouteTo(omit);
198 unsigned int items =this->TreeRoot->ChildCount();
199 for (unsigned int x = 0; x < items; x++)
201 TreeServer* Route = this->TreeRoot->GetChild(x);
202 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
204 TreeSocket* Sock = Route->GetSocket();
206 Sock->WriteLine(data);
212 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, parameterlist ¶ms, std::string omit)
214 TreeServer* omitroute = this->BestRouteTo(omit);
215 std::string FullLine = ":" + prefix + " " + command;
216 unsigned int words = params.size();
217 for (unsigned int x = 0; x < words; x++)
219 FullLine = FullLine + " " + params[x];
221 unsigned int items = this->TreeRoot->ChildCount();
222 for (unsigned int x = 0; x < items; x++)
224 TreeServer* Route = this->TreeRoot->GetChild(x);
226 // The route has a socket (its a direct connection)
227 // The route isnt the one to be omitted
228 // The route isnt the path to the one to be omitted
229 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
231 TreeSocket* Sock = Route->GetSocket();
233 Sock->WriteLine(FullLine);
239 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, parameterlist ¶ms)
241 std::string FullLine = ":" + prefix + " " + command;
242 unsigned int words = params.size();
243 for (unsigned int x = 0; x < words; x++)
245 FullLine = FullLine + " " + params[x];
247 unsigned int items = this->TreeRoot->ChildCount();
248 for (unsigned int x = 0; x < items; x++)
250 TreeServer* Route = this->TreeRoot->GetChild(x);
251 if (Route && Route->GetSocket())
253 TreeSocket* Sock = Route->GetSocket();
255 Sock->WriteLine(FullLine);
261 bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, parameterlist ¶ms)
263 std::string spfx = prefix;
264 std::string scmd = command;
265 return this->DoOneToMany(spfx, scmd, params);
268 bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, parameterlist ¶ms, std::string omit)
270 std::string spfx = prefix;
271 std::string scmd = command;
272 return this->DoOneToAllButSender(spfx, scmd, params, omit);
275 bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, parameterlist ¶ms, std::string target)
277 TreeServer* Route = this->BestRouteTo(target);
280 std::string FullLine = ":" + prefix + " " + command;
281 unsigned int words = params.size();
282 for (unsigned int x = 0; x < words; x++)
284 FullLine = FullLine + " " + params[x];
286 if (Route && Route->GetSocket())
288 TreeSocket* Sock = Route->GetSocket();
290 Sock->WriteLine(FullLine);
300 void SpanningTreeUtilities::RefreshIPCache()
303 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
306 if (L->IPAddr.empty() || L->RecvPass.empty() || L->SendPass.empty() || L->Name.empty() || !L->Port)
310 ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"m_spanningtree: Ignoring a malformed link block (all link blocks require a name!)");
314 ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"m_spanningtree: Ignoring a link block missing recvpass, sendpass, port or ipaddr.");
317 /* Invalid link block */
321 if (L->AllowMask.length())
322 ValidIPs.push_back(L->AllowMask);
324 irc::sockets::sockaddrs dummy;
325 bool ipvalid = irc::sockets::aptosa(L->IPAddr, L->Port, dummy);
327 ValidIPs.push_back(L->IPAddr);
333 SecurityIPResolver* sr = new SecurityIPResolver(Creator, this, L->IPAddr, L, cached, DNS_QUERY_AAAA);
334 ServerInstance->AddResolver(sr, cached);
343 void SpanningTreeUtilities::ReadConfiguration()
347 FlatLinks = Conf.ReadFlag("security","flatlinks",0);
348 HideULines = Conf.ReadFlag("security","hideulines",0);
349 AnnounceTSChange = Conf.ReadFlag("options","announcets",0);
350 AllowOptCommon = Conf.ReadFlag("options", "allowmismatch", 0);
351 ChallengeResponse = !Conf.ReadFlag("security", "disablehmac", 0);
352 quiet_bursts = Conf.ReadFlag("performance", "quietbursts", 0);
353 PingWarnTime = Conf.ReadInteger("options", "pingwarning", 0, true);
354 PingFreq = Conf.ReadInteger("options", "serverpingfreq", 0, true);
359 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
362 AutoconnectBlocks.clear();
365 ConfigTagList tags = ServerInstance->Config->ConfTags("link");
366 for(ConfigIter i = tags.first; i != tags.second; ++i)
368 ConfigTag* tag = i->second;
369 reference<Link> L = new Link(tag);
370 L->Name = tag->getString("name").c_str();
371 L->AllowMask = tag->getString("allowmask");
372 L->IPAddr = tag->getString("ipaddr");
373 L->Port = tag->getInt("port");
374 L->SendPass = tag->getString("sendpass");
375 L->RecvPass = tag->getString("recvpass");
376 L->Fingerprint = tag->getString("fingerprint");
377 L->HiddenFromStats = tag->getBool("statshidden");
378 L->Timeout = tag->getInt("timeout");
379 L->Hook = tag->getString("ssl");
380 L->Bind = tag->getString("bind");
381 L->Hidden = tag->getBool("hidden");
383 if (L->Name.find('.') == std::string::npos)
384 throw CoreException("The link name '"+assign(L->Name)+"' is invalid and must contain at least one '.' character");
386 if (L->Name.length() > 64)
387 throw CoreException("The link name '"+assign(L->Name)+"' is longer than 64 characters!");
389 if ((!L->IPAddr.empty()) && (!L->RecvPass.empty()) && (!L->SendPass.empty()) && (!L->Name.empty()) && (L->Port))
391 ValidIPs.push_back(L->IPAddr);
395 if (L->IPAddr.empty())
398 ValidIPs.push_back("*");
399 ServerInstance->Logs->Log("m_spanningtree",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.");
402 if (L->RecvPass.empty())
404 throw CoreException("Invalid configuration for server '"+assign(L->Name)+"', recvpass not defined!");
407 if (L->SendPass.empty())
409 throw CoreException("Invalid configuration for server '"+assign(L->Name)+"', sendpass not defined!");
414 throw CoreException("Invalid configuration, link tag without a name! IP address: "+L->IPAddr);
419 ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"Configuration warning: Link block " + assign(L->Name) + " has no port defined, you will not be able to /connect it.");
423 LinkBlocks.push_back(L);
426 tags = ServerInstance->Config->ConfTags("autoconnect");
427 for(ConfigIter i = tags.first; i != tags.second; ++i)
429 ConfigTag* tag = i->second;
430 reference<Autoconnect> A = new Autoconnect(tag);
431 A->Period = tag->getInt("period");
432 A->NextConnectTime = ServerInstance->Time() + A->Period;
434 irc::spacesepstream ss(tag->getString("server"));
436 while (ss.GetToken(server))
438 A->servers.push_back(server);
443 throw CoreException("Invalid configuration for autoconnect, period not a positive integer!");
446 if (A->servers.empty())
448 throw CoreException("Invalid configuration for autoconnect, server cannot be empty!");
451 AutoconnectBlocks.push_back(A);
457 Link* SpanningTreeUtilities::FindLink(const std::string& name)
459 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
462 if (InspIRCd::Match(x->Name.c_str(), name.c_str()))