-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "inspircd.h"\r#include "configreader.h"\r#include "users.h"\r#include "channels.h"\r#include "modules.h"\r#include "commands/cmd_whois.h"\r#include "commands/cmd_stats.h"\r#include "socket.h"\r#include "wildcard.h"\r#include "xline.h"\r#include "transport.h"\r\r#include "m_spanningtree/resolvers.h"\r#include "m_spanningtree/main.h"\r#include "m_spanningtree/utils.h"\r#include "m_spanningtree/treeserver.h"\r#include "m_spanningtree/link.h"\r#include "m_spanningtree/treesocket.h"\r\r/* $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 */\r\r/** This class is used to resolve server hostnames during /connect and autoconnect.\r * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this\r * resolver step first ourselves if we need it. This is totally nonblocking, and will\r * callback to OnLookupComplete or OnError when completed. Once it has completed we\r * will have an IP address which we can then use to continue our connection.\r */\rServernameResolver::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)\r{\r /* Nothing in here, folks */\r}\r\rvoid ServernameResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached)\r{\r /* Initiate the connection, now that we have an IP to use.\r * Passing a hostname directly to InspSocket causes it to\r * just bail and set its FD to -1.\r */\r TreeServer* CheckDupe = Utils->FindServer(MyLink.Name.c_str());\r if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */\r {\r\r if ((!MyLink.Hook.empty()) && (Utils->hooks.find(MyLink.Hook.c_str()) == Utils->hooks.end()))\r return;\r\r TreeSocket* newsocket = new TreeSocket(this->Utils, ServerInstance, result,MyLink.Port,false,MyLink.Timeout ? MyLink.Timeout : 10,MyLink.Name.c_str(),\r MyLink.Bind, MyLink.Hook.empty() ? NULL : Utils->hooks[MyLink.Hook.c_str()]);\r if (newsocket->GetFd() > -1)\r {\r /* We're all OK */\r }\r else\r {\r /* Something barfed, show the opers */\r ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));\r delete newsocket;\r Utils->DoFailOver(&MyLink);\r }\r }\r}\r\rvoid ServernameResolver::OnError(ResolverError e, const std::string &errormessage)\r{\r /* Ooops! */\r if (query == DNS_QUERY_AAAA)\r {\r bool cached;\r ServernameResolver* snr = new ServernameResolver(mine, Utils, ServerInstance, host, MyLink, cached, DNS_QUERY_A);\r ServerInstance->AddResolver(snr, cached);\r return;\r }\r ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());\r Utils->DoFailOver(&MyLink);\r}\r\r
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * Copyright (C) 2013, 2019-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2013, 2016 Adam <Adam@anope.org>
+ * Copyright (C) 2012-2014, 2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007, 2010 Craig Edwards <brain@inspircd.org>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+#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 separated 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* const ans_record = r->FindAnswerOfType(this->question.type);
+ if (!ans_record)
+ {
+ OnError(r);
+ return;
+ }
+
+ irc::sockets::sockaddrs sa;
+ if (!irc::sockets::aptosa(ans_record->rdata, MyLink->Port, sa))
+ {
+ // We had a result but it wasn't a valid IPv4/IPv6.
+ OnError(r);
+ return;
+ }
+
+ /* 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);
+ if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
+ {
+ TreeSocket* newsocket = new TreeSocket(MyLink, myautoconnect, sa);
+ if (!newsocket->HasFd())
+ {
+ /* 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)
+{
+ if (r->error == DNS::ERROR_UNLOADED)
+ {
+ // We're being unloaded, skip the snotice and ConnectServer() below to prevent autoconnect creating new sockets
+ return;
+ }
+
+ 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)
+{
+ for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i != Utils->LinkBlocks.end(); ++i)
+ {
+ Link* L = *i;
+ if (L->IPAddr == host)
+ {
+ for (std::vector<DNS::ResourceRecord>::const_iterator j = r->answers.begin(); j != r->answers.end(); ++j)
+ {
+ const DNS::ResourceRecord& ans_record = *j;
+ if (ans_record.type == this->question.type)
+ Utils->ValidIPs.push_back(ans_record.rdata);
+ }
+ break;
+ }
+ }
+}
+
+void SecurityIPResolver::OnError(const DNS::Query *r)
+{
+ // This can be called because of us being unloaded but we don't have to do anything differently
+ 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;
+}
projects / user / henk / code / inspircd.git / blobdiff