2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
5 * Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
7 * This file is part of InspIRCd. InspIRCd is free software: you can
8 * redistribute it and/or modify it under the terms of the GNU General Public
9 * License as published by the Free Software Foundation, version 2.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "cachetimer.h"
24 #include "resolvers.h"
27 #include "treeserver.h"
29 #include "treesocket.h"
31 /** This class is used to resolve server hostnames during /connect and autoconnect.
32 * As of 1.1, the resolver system is seperated out from BufferedSocket, so we must do this
33 * resolver step first ourselves if we need it. This is totally nonblocking, and will
34 * callback to OnLookupComplete or OnError when completed. Once it has completed we
35 * will have an IP address which we can then use to continue our connection.
37 ServernameResolver::ServernameResolver(DNS::Manager* mgr, const std::string& hostname, Link* x, DNS::QueryType qt, Autoconnect* myac)
38 : DNS::Request(mgr, Utils->Creator, hostname, qt)
39 , query(qt), host(hostname), MyLink(x), myautoconnect(myac)
43 void ServernameResolver::OnLookupComplete(const DNS::Query *r)
45 const DNS::ResourceRecord* const ans_record = r->FindAnswerOfType(this->question.type);
52 /* Initiate the connection, now that we have an IP to use.
53 * Passing a hostname directly to BufferedSocket causes it to
54 * just bail and set its FD to -1.
56 TreeServer* CheckDupe = Utils->FindServer(MyLink->Name);
57 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
59 TreeSocket* newsocket = new TreeSocket(MyLink, myautoconnect, ans_record->rdata);
60 if (newsocket->GetFd() > -1)
66 /* Something barfed, show the opers */
67 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
68 MyLink->Name.c_str(), newsocket->getError().c_str());
69 ServerInstance->GlobalCulls.AddItem(newsocket);
74 void ServernameResolver::OnError(const DNS::Query *r)
76 if (r->error == DNS::ERROR_UNLOADED)
78 // We're being unloaded, skip the snotice and ConnectServer() below to prevent autoconnect creating new sockets
82 if (query == DNS::QUERY_AAAA)
84 ServernameResolver* snr = new ServernameResolver(this->manager, host, MyLink, DNS::QUERY_A, myautoconnect);
87 this->manager->Process(snr);
90 catch (DNS::Exception &)
96 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());
97 Utils->Creator->ConnectServer(myautoconnect, false);
100 SecurityIPResolver::SecurityIPResolver(Module* me, DNS::Manager* mgr, const std::string& hostname, Link* x, DNS::QueryType qt)
101 : DNS::Request(mgr, me, hostname, qt)
102 , MyLink(x), mine(me), host(hostname), query(qt)
106 void SecurityIPResolver::OnLookupComplete(const DNS::Query *r)
108 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i != Utils->LinkBlocks.end(); ++i)
111 if (L->IPAddr == host)
113 for (std::vector<DNS::ResourceRecord>::const_iterator j = r->answers.begin(); j != r->answers.end(); ++j)
115 const DNS::ResourceRecord& ans_record = *j;
116 if (ans_record.type == this->question.type)
117 Utils->ValidIPs.push_back(ans_record.rdata);
124 void SecurityIPResolver::OnError(const DNS::Query *r)
126 // This can be called because of us being unloaded but we don't have to do anything differently
127 if (query == DNS::QUERY_AAAA)
129 SecurityIPResolver* res = new SecurityIPResolver(mine, this->manager, host, MyLink, DNS::QUERY_A);
132 this->manager->Process(res);
135 catch (DNS::Exception &)
140 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Could not resolve IP associated with Link '%s': %s",
141 MyLink->Name.c_str(), this->manager->GetErrorStr(r->error).c_str());
144 CacheRefreshTimer::CacheRefreshTimer()
149 bool CacheRefreshTimer::Tick(time_t TIME)
151 Utils->RefreshIPCache();