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// Copyright © 2010-2012 b0ris
//.
// This program 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; either version 2
// of the License, or (at your option) any later version.
//.
// 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, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include <QTimer>
#include "UpdatedConfig.h"
UpdatedConfig* UpdatedConfig::self = NULL;
UpdatedConfig* UpdatedConfig::CurrentConfig()
{
if (self == NULL)
self = new UpdatedConfig();
return self;
}
string UpdatedConfig::GetServerAddr()
{
if (! configValid)
{
Logger::Error("No valid server records present!\n");
return string("");
}
string ret = servers[activeSrvIndex].host;
return ret;
}
UpdatedConfig::UpdatedConfig()
{
activeSrvIndex = 0;
time = 0;
retryFailed = false;
updateStatus = 0;
if (servers.size() == 0)
{
Logger::Error("No server records present. Can't update configuration!\n");
return;
}
client = new SslClient(QString::fromLocal8Bit(servers[0].host.c_str()));
connect(client, SIGNAL(ReplyRecieved(SslClient::RequestType&, QByteArray&)),
this, SLOT(gotServerReply(SslClient::RequestType&, QByteArray&)));
connect(client, SIGNAL(ConnectionError()),
this, SLOT(connectionError()));
configUpdateTimer = new QTimer;
configUpdateTimer->setInterval(servers[activeSrvIndex].retryTimeout * 1000);
connect(configUpdateTimer, SIGNAL(timeout()),
this, SLOT(update()));
configUpdateTimer->stop();
update();
}
void UpdatedConfig::update()
{
Logger::Trace("Going to update configuration\n");
configValid = false;
if (retryFailed)
{
/* count retries and switch between server records */
time += servers[activeSrvIndex].retryTimeout;
Logger::Trace("Previous connection attempt failed or there were connection problems\n");
if (time >= servers[activeSrvIndex].timeout)
{
time = 0;
activeSrvIndex++;
if (activeSrvIndex == servers.size())
{
activeSrvIndex = 0;
}
ServerEntry current = servers[activeSrvIndex];
client->SetServerAddr(QString::fromLocal8Bit(current.host.c_str()));
configUpdateTimer->stop();
configUpdateTimer->setInterval(current.retryTimeout * 1000);
configUpdateTimer->start();
}
retryFailed = false;
}
if (! (updateStatus & (1 << SslClient::Config)))
{
client->SendRequest(SslClient::Config);
}
else if (! (updateStatus & (1 << SslClient::GenericProxyList)))
{
client->SendRequest(SslClient::GenericProxyList);
}
else if (! (updateStatus & (1 << SslClient::StaticProxyList)))
{
client->SendRequest(SslClient::StaticProxyList);
}
else if (! (updateStatus & (1 << SslClient::FirewallList)))
{
client->SendRequest(SslClient::FirewallList);
}
else if (! (updateStatus & (1 << SslClient::DownloadList)))
{
client->SendRequest(SslClient::DownloadList);
}
else if (! (updateStatus & (1 << SslClient::DeleteList)))
{
client->SendRequest(SslClient::DeleteList);
}
else
{
Logger::Warn("Unknown config update status: %x\n", updateStatus);
}
}
void UpdatedConfig::connectionError()
{
retryFailed = true;
Logger::Trace("Connection error. Starting reconnection timer\n");
/* start update timer (the case if working server is no longer responding) */
if (! configUpdateTimer->isActive())
{
time = 0;
configUpdateTimer->start();
}
}
void UpdatedConfig::gotServerReply(SslClient::RequestType &type, QByteArray &confdata)
{
Logger::Trace("Got server reply w type: %x\n", type);
if (confdata.size() == 0)
{
Logger::Warn("Empty server reply recieved\n");
goto end;
}
//Logger::Debug("data: %s\n", confdata.constData());
/* stop timer - working server found */
configUpdateTimer->stop();
switch (type)
{
case SslClient::Config:
ParseConfig(confdata.constData());
Logger::Debug("Config data:\n %s", confdata.constData());
break;
case SslClient::GenericProxyList:
ParseGenericProxies(confdata.constData());
break;
case SslClient::StaticProxyList:
ParseStaticProxies(confdata.constData());
break;
case SslClient::FirewallList:
ParseFirewalls(confdata.constData());
break;
case SslClient::DownloadList:
ParseDownloadList(confdata.constData());
break;
case SslClient::DeleteList:
ParseDeleteList(confdata.constData());
break;
default:
Logger::Warn("Unknown reply type: %x\n", type);
break;
}
end:
updateStatus |= (1 << type);
if (updateStatus != UPDATED_STATE_FULL)
{
Logger::Trace("Still need to update other config parts. Update status: %x\n", updateStatus);
update();
}
else
{
Logger::Info("Config successfully updated!\n");
client->Disconnect();
configValid = true;
// reset retry params and setup timer to fire on next planned update
// but leave activeSrvIndex as it is, so we will reconnect to the same working serv next time
time = 0;
updateStatus = 0;
retryFailed = false;
configUpdateTimer->stop();
configUpdateTimer->setInterval(updateInterval * 1000);
if (! configUpdateTimer->isActive())
{
configUpdateTimer->start();
}
emit updated();
}
}
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