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/*
* Anope IRC Services
*
* Copyright (C) 2012-2017 Anope Team <team@anope.org>
*
* This file is part of Anope. Anope 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 see <http://www.gnu.org/licenses/>.
*/
#include "uplink.h"
#include "logger.h"
#include "config.h"
#include "protocol.h"
#include "servers.h"
#include "event.h"
#include "bots.h"
#include "timers.h"
#include "modules.h"
UplinkSocket *UplinkSock = NULL;
class ReconnectTimer : public Timer
{
public:
ReconnectTimer(int wait) : Timer(wait) { }
void Tick(time_t) override
{
try
{
Uplink::Connect();
}
catch (const SocketException &ex)
{
Anope::Logger.Terminal(_("Unable to connect to uplink #{0} ({1}:{2}): {3}"),
Anope::CurrentUplink + 1, Config->Uplinks[Anope::CurrentUplink].host,
Config->Uplinks[Anope::CurrentUplink].port, ex.GetReason());
}
}
};
Uplink::PingTimer::PingTimer(time_t timeout) : Timer(timeout, Anope::CurTime, true)
{
}
void Uplink::PingTimer::Tick(time_t)
{
Server *uplink;
time_t ping_time = Config->GetBlock("options")->Get<time_t>("ping_time", "60");
if (!UplinkSock || Anope::CurTime - UplinkSock->last_read <= ping_time)
return;
if (Me->GetLinks().empty())
return;
if (UplinkSock->pinged)
{
Anope::Logger.Log(_("No response from uplink in {0} seconds, disconnecting"), ping_time);
UplinkSock->error = true;
Anope::QuitReason = "Ping timeout";
delete UplinkSock;
Anope::QuitReason.clear();
return;
}
Anope::Logger.Debug("Pinging uplink");
uplink = Me->GetLinks().front();
UplinkSock->pinged = true;
IRCD->Send<messages::Ping>(Me->GetName(), uplink->GetName());
}
void Uplink::Connect()
{
if (Config->Uplinks.empty())
{
Anope::Logger.Log(_("Warning: There are no configured uplinks."));
return;
}
if (static_cast<unsigned>(++Anope::CurrentUplink) >= Config->Uplinks.size())
Anope::CurrentUplink = 0;
Configuration::Uplink &u = Config->Uplinks[Anope::CurrentUplink];
new UplinkSocket();
if (!Config->GetBlock("serverinfo")->Get<Anope::string>("localhost").empty())
UplinkSock->Bind(Config->GetBlock("serverinfo")->Get<Anope::string>("localhost"));
EventManager::Get()->Dispatch(&Event::PreServerConnect::OnPreServerConnect);
Anope::string ip = Anope::Resolve(u.host, u.ipv6 ? AF_INET6 : AF_INET);
Anope::Logger.Terminal(_("Attempting to connect to uplink #{0} {1} ({2}), port {3}"), Anope::CurrentUplink + 1, u.host, ip, u.port);
UplinkSock->Connect(ip, u.port);
}
UplinkSocket::UplinkSocket() : Socket(-1, Config->Uplinks[Anope::CurrentUplink].ipv6), ConnectionSocket(), BufferedSocket()
{
UplinkSock = this;
}
UplinkSocket::~UplinkSocket()
{
if (!error && !Anope::Quitting)
{
this->OnError("");
Module *protocol = ModuleManager::FindFirstOf(PROTOCOL);
if (protocol && !protocol->name.find("inspircd"))
Anope::Logger.Terminal(_("Check that you have loaded m_spanningtree.so on InspIRCd, and are not connecting Anope to an SSL enabled port without configuring SSL in Anope (or vice versa)"));
else
Anope::Logger.Terminal(_("Check that you are not connecting Anope to an SSL enabled port without configuring SSL in Anope (or vice versa)"));
}
if (IRCD && Servers::GetUplink() && Servers::GetUplink()->IsSynced())
{
EventManager::Get()->Dispatch(&Event::ServerDisconnect::OnServerDisconnect);
for (user_map::const_iterator it = UserListByNick.begin(); it != UserListByNick.end(); ++it)
{
User *u = it->second;
if (u->server == Me)
{
/* Don't use quitmsg here, it may contain information you don't want people to see */
IRCD->SendQuit(u, "Shutting down");
ServiceBot* bi = ServiceBot::Find(u->GetUID());
if (bi != NULL)
bi->introduced = false;
}
}
IRCD->Send<messages::SQuit>(Me, Anope::QuitReason);
this->ProcessWrite(); // Write out the last bit
}
for (unsigned i = Me->GetLinks().size(); i > 0; --i)
if (!Me->GetLinks()[i - 1]->IsJuped())
Me->GetLinks()[i - 1]->Delete(Me->GetName() + " " + Me->GetLinks()[i - 1]->GetName());
UplinkSock = NULL;
Me->Unsync();
if (Anope::AtTerm())
{
if (static_cast<unsigned>(Anope::CurrentUplink + 1) == Config->Uplinks.size())
{
Anope::QuitReason = "Unable to connect to any uplink";
Anope::Quitting = true;
Anope::ReturnValue = -1;
}
else
{
new ReconnectTimer(1);
}
}
else if (!Anope::Quitting)
{
time_t retry = Config->GetBlock("options")->Get<time_t>("retrywait");
Anope::Logger.Log(_("Disconnected, retrying in {0} seconds"), retry);
new ReconnectTimer(retry);
}
}
bool UplinkSocket::ProcessRead()
{
last_read = Anope::CurTime;
pinged = false;
bool b = BufferedSocket::ProcessRead();
for (Anope::string buf; (buf = this->GetLine()).empty() == false;)
{
Anope::Process(buf);
User::QuitUsers();
Channel::DeleteChannels();
}
return b;
}
void UplinkSocket::OnConnect()
{
Anope::Logger.Terminal(_("Successfully connected to uplink #{0} {1}:{2}"), Anope::CurrentUplink + 1, Config->Uplinks[Anope::CurrentUplink].host, Config->Uplinks[Anope::CurrentUplink].port);
IRCD->Handshake();
EventManager::Get()->Dispatch(&Event::ServerConnect::OnServerConnect);
}
void UplinkSocket::OnError(const Anope::string &err)
{
if (!this->flags[SF_CONNECTED])
Anope::Logger.Terminal(_("Unable to connect to uplink #{0} ({1}:{2}): {3}{4}"), Anope::CurrentUplink + 1, Config->Uplinks[Anope::CurrentUplink].host, Config->Uplinks[Anope::CurrentUplink].port, !err.empty() ? (": " + err) : "");
else
Anope::Logger.Terminal(_("Lost connection from uplink #{0} ({1}:{2}): {3}{4}"), Anope::CurrentUplink + 1, Config->Uplinks[Anope::CurrentUplink].host, Config->Uplinks[Anope::CurrentUplink].port, !err.empty() ? (": " + err) : "");
error |= !err.empty();
}
void Uplink::SendMessage(IRCMessage &message)
{
const MessageSource &source = message.GetSource();
Anope::string buffer = IRCD->Format(message);
if (source.GetServer() != NULL)
{
const Server *s = source.GetServer();
if (s != Me && !s->IsJuped())
{
Anope::Logger.Debug("Attempted to send \"{0}\" from {1} who is not from me?", buffer, s->GetName());
return;
}
}
else if (source.GetUser() != NULL)
{
const User *u = source.GetUser();
if (u->server != Me && !u->server->IsJuped())
{
Anope::Logger.Debug("Attempted to send \"{0}\" from {1} who is not from me?", buffer, u->nick);
return;
}
const ServiceBot *bi = source.GetBot();
if (bi != NULL && bi->introduced == false)
{
Anope::Logger.Debug("Attempted to send \"{0}\" from {1} when not introduced", buffer, bi->nick);
return;
}
}
if (!UplinkSock)
{
Anope::Logger.Debug("Attempted to send \"{0}\" when not connected", buffer);
return;
}
UplinkSock->Write(buffer);
Anope::Logger.RawIO("Sent: {0}", buffer);
}
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