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();
150 for(std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = timeoutlist.begin(); i != timeoutlist.end(); ++i)
152 TreeSocket* s = i->first;
157 return classbase::cull();
160 SpanningTreeUtilities::~SpanningTreeUtilities()
165 void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list)
167 if (list.find(server) == list.end())
168 list[server] = server;
171 /* returns a list of DIRECT servernames for a specific channel */
172 void SpanningTreeUtilities::GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list)
174 unsigned int minrank = 0;
177 ModeHandler* mh = ServerInstance->Modes->FindPrefix(status);
179 minrank = mh->GetPrefixRank();
182 const UserMembList *ulist = c->GetUsers();
184 for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
186 if (IS_LOCAL(i->first))
189 if (minrank && i->second->getRank() < minrank)
192 if (exempt_list.find(i->first) == exempt_list.end())
194 TreeServer* best = this->BestRouteTo(i->first->server);
196 AddThisServer(best,list);
202 bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, const parameterlist ¶ms)
204 TreeServer* omitroute = this->BestRouteTo(omit);
205 unsigned int items =this->TreeRoot->ChildCount();
206 for (unsigned int x = 0; x < items; x++)
208 TreeServer* Route = this->TreeRoot->GetChild(x);
209 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
211 TreeSocket* Sock = Route->GetSocket();
213 Sock->WriteLine(data);
219 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, const parameterlist ¶ms, std::string omit)
221 TreeServer* omitroute = this->BestRouteTo(omit);
222 std::string FullLine = ":" + prefix + " " + command;
223 unsigned int words = params.size();
224 for (unsigned int x = 0; x < words; x++)
226 FullLine = FullLine + " " + params[x];
228 unsigned int items = this->TreeRoot->ChildCount();
229 for (unsigned int x = 0; x < items; x++)
231 TreeServer* Route = this->TreeRoot->GetChild(x);
233 // The route has a socket (its a direct connection)
234 // The route isnt the one to be omitted
235 // The route isnt the path to the one to be omitted
236 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
238 TreeSocket* Sock = Route->GetSocket();
240 Sock->WriteLine(FullLine);
246 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, const parameterlist ¶ms)
248 std::string FullLine = ":" + prefix + " " + command;
249 unsigned int words = params.size();
250 for (unsigned int x = 0; x < words; x++)
252 FullLine = FullLine + " " + params[x];
254 unsigned int items = this->TreeRoot->ChildCount();
255 for (unsigned int x = 0; x < items; x++)
257 TreeServer* Route = this->TreeRoot->GetChild(x);
258 if (Route && Route->GetSocket())
260 TreeSocket* Sock = Route->GetSocket();
262 Sock->WriteLine(FullLine);
268 bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, const parameterlist ¶ms)
270 std::string spfx = prefix;
271 std::string scmd = command;
272 return this->DoOneToMany(spfx, scmd, params);
275 bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, const parameterlist ¶ms, std::string omit)
277 std::string spfx = prefix;
278 std::string scmd = command;
279 return this->DoOneToAllButSender(spfx, scmd, params, omit);
282 bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, const parameterlist ¶ms, std::string target)
284 TreeServer* Route = this->BestRouteTo(target);
287 std::string FullLine = ":" + prefix + " " + command;
288 unsigned int words = params.size();
289 for (unsigned int x = 0; x < words; x++)
291 FullLine = FullLine + " " + params[x];
293 if (Route && Route->GetSocket())
295 TreeSocket* Sock = Route->GetSocket();
297 Sock->WriteLine(FullLine);
307 void SpanningTreeUtilities::RefreshIPCache()
310 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
313 if (L->IPAddr.empty() || L->RecvPass.empty() || L->SendPass.empty() || L->Name.empty() || !L->Port)
317 ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"m_spanningtree: Ignoring a malformed link block (all link blocks require a name!)");
321 ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"m_spanningtree: Ignoring a link block missing recvpass, sendpass, port or ipaddr.");
324 /* Invalid link block */
328 if (L->AllowMask.length())
329 ValidIPs.push_back(L->AllowMask);
331 irc::sockets::sockaddrs dummy;
332 bool ipvalid = irc::sockets::aptosa(L->IPAddr, L->Port, dummy);
334 ValidIPs.push_back(L->IPAddr);
340 SecurityIPResolver* sr = new SecurityIPResolver(Creator, this, L->IPAddr, L, cached, DNS_QUERY_AAAA);
341 ServerInstance->AddResolver(sr, cached);
350 void SpanningTreeUtilities::ReadConfiguration()
354 FlatLinks = Conf.ReadFlag("security","flatlinks",0);
355 HideULines = Conf.ReadFlag("security","hideulines",0);
356 AnnounceTSChange = Conf.ReadFlag("options","announcets",0);
357 AllowOptCommon = Conf.ReadFlag("options", "allowmismatch", 0);
358 ChallengeResponse = !Conf.ReadFlag("security", "disablehmac", 0);
359 quiet_bursts = Conf.ReadFlag("performance", "quietbursts", 0);
360 PingWarnTime = Conf.ReadInteger("options", "pingwarning", 0, true);
361 PingFreq = Conf.ReadInteger("options", "serverpingfreq", 0, true);
366 if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
369 AutoconnectBlocks.clear();
372 ConfigTagList tags = ServerInstance->Config->ConfTags("link");
373 for(ConfigIter i = tags.first; i != tags.second; ++i)
375 ConfigTag* tag = i->second;
376 reference<Link> L = new Link(tag);
377 L->Name = tag->getString("name").c_str();
378 L->AllowMask = tag->getString("allowmask");
379 L->IPAddr = tag->getString("ipaddr");
380 L->Port = tag->getInt("port");
381 L->SendPass = tag->getString("sendpass", tag->getString("password"));
382 L->RecvPass = tag->getString("recvpass", tag->getString("password"));
383 L->Fingerprint = tag->getString("fingerprint");
384 L->HiddenFromStats = tag->getBool("statshidden");
385 L->Timeout = tag->getInt("timeout");
386 L->Hook = tag->getString("ssl");
387 L->Bind = tag->getString("bind");
388 L->Hidden = tag->getBool("hidden");
390 if (L->Name.find('.') == std::string::npos)
391 throw CoreException("The link name '"+assign(L->Name)+"' is invalid and must contain at least one '.' character");
393 if (L->Name.length() > 64)
394 throw CoreException("The link name '"+assign(L->Name)+"' is longer than 64 characters!");
396 if (L->Fingerprint.find(':') != std::string::npos)
398 std::string tmp = L->Fingerprint;
399 L->Fingerprint.clear();
400 for(unsigned int j=0; j < tmp.length(); j++)
402 L->Fingerprint.push_back(tmp[j]);
405 if ((!L->IPAddr.empty()) && (!L->RecvPass.empty()) && (!L->SendPass.empty()) && (!L->Name.empty()) && (L->Port))
407 ValidIPs.push_back(L->IPAddr);
411 if (L->IPAddr.empty())
414 ValidIPs.push_back("*");
415 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.");
418 if (L->RecvPass.empty())
420 throw CoreException("Invalid configuration for server '"+assign(L->Name)+"', recvpass not defined!");
423 if (L->SendPass.empty())
425 throw CoreException("Invalid configuration for server '"+assign(L->Name)+"', sendpass not defined!");
430 throw CoreException("Invalid configuration, link tag without a name! IP address: "+L->IPAddr);
435 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.");
439 LinkBlocks.push_back(L);
442 tags = ServerInstance->Config->ConfTags("autoconnect");
443 for(ConfigIter i = tags.first; i != tags.second; ++i)
445 ConfigTag* tag = i->second;
446 reference<Autoconnect> A = new Autoconnect(tag);
447 A->Period = tag->getInt("period");
448 A->NextConnectTime = ServerInstance->Time() + A->Period;
450 irc::spacesepstream ss(tag->getString("server"));
452 while (ss.GetToken(server))
454 A->servers.push_back(server);
459 throw CoreException("Invalid configuration for autoconnect, period not a positive integer!");
462 if (A->servers.empty())
464 throw CoreException("Invalid configuration for autoconnect, server cannot be empty!");
467 AutoconnectBlocks.push_back(A);
473 Link* SpanningTreeUtilities::FindLink(const std::string& name)
475 for (std::vector<reference<Link> >::iterator i = LinkBlocks.begin(); i != LinkBlocks.end(); ++i)
478 if (InspIRCd::Match(x->Name.c_str(), name.c_str()))