X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Fresolvers.cpp;h=3d04a5085dd0a9bc3c38b76aa961c8e12ab9657e;hb=60e73a38327cfcdac595e694917c476060bf248a;hp=80971c69979e8a0cacba9b2812f2b9e636483351;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/resolvers.cpp b/src/modules/m_spanningtree/resolvers.cpp index 80971c699..3d04a5085 100644 --- a/src/modules/m_spanningtree/resolvers.cpp +++ b/src/modules/m_spanningtree/resolvers.cpp @@ -1 +1,139 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include "configreader.h" #include "users.h" #include "channels.h" #include "modules.h" #include "commands/cmd_whois.h" #include "commands/cmd_stats.h" #include "socket.h" #include "wildcard.h" #include "xline.h" #include "transport.h" #include "m_spanningtree/resolvers.h" #include "m_spanningtree/main.h" #include "m_spanningtree/utils.h" #include "m_spanningtree/treeserver.h" #include "m_spanningtree/link.h" #include "m_spanningtree/treesocket.h" /* $ModDep: m_spanningtree/timesynctimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h */ /** This class is used to resolve server hostnames during /connect and autoconnect. * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this * resolver step first ourselves if we need it. This is totally nonblocking, and will * callback to OnLookupComplete or OnError when completed. Once it has completed we * will have an IP address which we can then use to continue our connection. */ ServernameResolver::ServernameResolver(Module* me, SpanningTreeUtilities* Util, InspIRCd* Instance, const std::string &hostname, Link x, bool &cached, QueryType qt) : Resolver(Instance, hostname, qt, cached, me), MyLink(x), Utils(Util), query(qt), host(hostname), mine(me) { /* Nothing in here, folks */ } void ServernameResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) { /* Initiate the connection, now that we have an IP to use. * Passing a hostname directly to InspSocket causes it to * just bail and set its FD to -1. */ TreeServer* CheckDupe = Utils->FindServer(MyLink.Name.c_str()); if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */ { if ((!MyLink.Hook.empty()) && (Utils->hooks.find(MyLink.Hook.c_str()) == Utils->hooks.end())) return; TreeSocket* newsocket = new TreeSocket(this->Utils, ServerInstance, result,MyLink.Port,false,MyLink.Timeout ? MyLink.Timeout : 10,MyLink.Name.c_str(), MyLink.Bind, MyLink.Hook.empty() ? NULL : Utils->hooks[MyLink.Hook.c_str()]); if (newsocket->GetFd() > -1) { /* We're all OK */ } else { /* Something barfed, show the opers */ ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno)); delete newsocket; Utils->DoFailOver(&MyLink); } } } void ServernameResolver::OnError(ResolverError e, const std::string &errormessage) { /* Ooops! */ if (query == DNS_QUERY_AAAA) { bool cached; ServernameResolver* snr = new ServernameResolver(mine, Utils, ServerInstance, host, MyLink, cached, DNS_QUERY_A); ServerInstance->AddResolver(snr, cached); return; } ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str()); Utils->DoFailOver(&MyLink); } \ No newline at end of file +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2007 Craig Edwards + * + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + + +#include "inspircd.h" + +#include "cachetimer.h" +#include "resolvers.h" +#include "main.h" +#include "utils.h" +#include "treeserver.h" +#include "link.h" +#include "treesocket.h" + +/** This class is used to resolve server hostnames during /connect and autoconnect. + * As of 1.1, the resolver system is seperated out from BufferedSocket, so we must do this + * resolver step first ourselves if we need it. This is totally nonblocking, and will + * callback to OnLookupComplete or OnError when completed. Once it has completed we + * will have an IP address which we can then use to continue our connection. + */ +ServernameResolver::ServernameResolver(DNS::Manager* mgr, const std::string& hostname, Link* x, DNS::QueryType qt, Autoconnect* myac) + : DNS::Request(mgr, Utils->Creator, hostname, qt) + , query(qt), host(hostname), MyLink(x), myautoconnect(myac) +{ +} + +void ServernameResolver::OnLookupComplete(const DNS::Query *r) +{ + const DNS::ResourceRecord &ans_record = r->answers[0]; + + /* Initiate the connection, now that we have an IP to use. + * Passing a hostname directly to BufferedSocket causes it to + * just bail and set its FD to -1. + */ + TreeServer* CheckDupe = Utils->FindServer(MyLink->Name.c_str()); + if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */ + { + TreeSocket* newsocket = new TreeSocket(MyLink, myautoconnect, ans_record.rdata); + if (newsocket->GetFd() > -1) + { + /* We're all OK */ + } + else + { + /* Something barfed, show the opers */ + ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.", + MyLink->Name.c_str(), newsocket->getError().c_str()); + ServerInstance->GlobalCulls.AddItem(newsocket); + } + } +} + +void ServernameResolver::OnError(const DNS::Query *r) +{ + /* Ooops! */ + if (query == DNS::QUERY_AAAA) + { + ServernameResolver* snr = new ServernameResolver(this->manager, host, MyLink, DNS::QUERY_A, myautoconnect); + try + { + this->manager->Process(snr); + return; + } + catch (DNS::Exception &) + { + delete snr; + } + } + + ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s", MyLink->Name.c_str(), this->manager->GetErrorStr(r->error).c_str()); + Utils->Creator->ConnectServer(myautoconnect, false); +} + +SecurityIPResolver::SecurityIPResolver(Module* me, DNS::Manager* mgr, const std::string& hostname, Link* x, DNS::QueryType qt) + : DNS::Request(mgr, me, hostname, qt) + , MyLink(x), mine(me), host(hostname), query(qt) +{ +} + +void SecurityIPResolver::OnLookupComplete(const DNS::Query *r) +{ + const DNS::ResourceRecord &ans_record = r->answers[0]; + + for (std::vector >::iterator i = Utils->LinkBlocks.begin(); i != Utils->LinkBlocks.end(); ++i) + { + Link* L = *i; + if (L->IPAddr == host) + { + Utils->ValidIPs.push_back(ans_record.rdata); + break; + } + } +} + +void SecurityIPResolver::OnError(const DNS::Query *r) +{ + if (query == DNS::QUERY_AAAA) + { + SecurityIPResolver* res = new SecurityIPResolver(mine, this->manager, host, MyLink, DNS::QUERY_A); + try + { + this->manager->Process(res); + return; + } + catch (DNS::Exception &) + { + delete res; + } + } + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Could not resolve IP associated with Link '%s': %s", + MyLink->Name.c_str(), this->manager->GetErrorStr(r->error).c_str()); +} + +CacheRefreshTimer::CacheRefreshTimer() + : Timer(3600, true) +{ +} + +bool CacheRefreshTimer::Tick(time_t TIME) +{ + Utils->RefreshIPCache(); + return true; +}