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 /* $ModDep: m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h */
33 /** This class is used to resolve server hostnames during /connect and autoconnect.
34 * As of 1.1, the resolver system is seperated out from BufferedSocket, so we must do this
35 * resolver step first ourselves if we need it. This is totally nonblocking, and will
36 * callback to OnLookupComplete or OnError when completed. Once it has completed we
37 * will have an IP address which we can then use to continue our connection.
39 ServernameResolver::ServernameResolver(SpanningTreeUtilities* Util, DNS::Manager *mgr, const std::string &hostname, Link* x, DNS::QueryType qt, Autoconnect* myac)
40 : DNS::Request(mgr, Util->Creator, hostname, qt), Utils(Util), query(qt), host(hostname), MyLink(x), myautoconnect(myac)
44 void ServernameResolver::OnLookupComplete(const DNS::Query *r)
46 const DNS::ResourceRecord &ans_record = r->answers[0];
48 /* Initiate the connection, now that we have an IP to use.
49 * Passing a hostname directly to BufferedSocket causes it to
50 * just bail and set its FD to -1.
52 TreeServer* CheckDupe = Utils->FindServer(MyLink->Name.c_str());
53 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
55 TreeSocket* newsocket = new TreeSocket(Utils, MyLink, myautoconnect, ans_record.rdata);
56 if (newsocket->GetFd() > -1)
62 /* Something barfed, show the opers */
63 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
64 MyLink->Name.c_str(), newsocket->getError().c_str());
65 ServerInstance->GlobalCulls.AddItem(newsocket);
70 void ServernameResolver::OnError(const DNS::Query *r)
73 if (query == DNS::QUERY_AAAA)
75 ServernameResolver* snr = new ServernameResolver(Utils, this->manager, host, MyLink, DNS::QUERY_A, myautoconnect);
78 this->manager->Process(snr);
81 catch (DNS::Exception &)
87 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());
88 Utils->Creator->ConnectServer(myautoconnect, false);
91 SecurityIPResolver::SecurityIPResolver(Module* me, SpanningTreeUtilities* U, DNS::Manager *mgr, const std::string &hostname, Link* x, DNS::QueryType qt)
92 : DNS::Request(mgr, me, hostname, qt), MyLink(x), Utils(U), mine(me), host(hostname), query(qt)
96 void SecurityIPResolver::OnLookupComplete(const DNS::Query *r)
98 const DNS::ResourceRecord &ans_record = r->answers[0];
100 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i != Utils->LinkBlocks.end(); ++i)
103 if (L->IPAddr == host)
105 Utils->ValidIPs.push_back(ans_record.rdata);
111 void SecurityIPResolver::OnError(const DNS::Query *r)
113 if (query == DNS::QUERY_AAAA)
115 SecurityIPResolver* res = new SecurityIPResolver(mine, Utils, this->manager, host, MyLink, DNS::QUERY_A);
118 this->manager->Process(res);
121 catch (DNS::Exception &)
126 ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Could not resolve IP associated with Link '%s': %s",
127 MyLink->Name.c_str(), this->manager->GetErrorStr(r->error).c_str());
130 CacheRefreshTimer::CacheRefreshTimer(SpanningTreeUtilities* Util)
131 : Timer(3600, ServerInstance->Time(), true), Utils(Util)
135 bool CacheRefreshTimer::Tick(time_t TIME)
137 Utils->RefreshIPCache();