void ExitTunnel::TcpCreateProxy(QSharedPointer<Packet> packet)
{
TcpStartPacket *sp = dynamic_cast<TcpStartPacket*>(packet.data());
if(!sp) return;
QTcpSocket* socket = new QTcpSocket(this);
socket->setProxy(_exit_proxy);
// Check the verification key
if(!_table.SaveConnection(socket, sp->GetConnectionId(), sp->GetVerificationKey())) return;
_tcp_buffers[socket] = QByteArray();
connect(socket, SIGNAL(readyRead()), this, SLOT(TcpReadFromProxy()));
connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this,
SLOT(TcpProxyStateChanged(QAbstractSocket::SocketState)));
connect(socket, SIGNAL(disconnected()), this, SLOT(DiscardProxy()));
connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), this,
SLOT(HandleError(QAbstractSocket::SocketError)));
qDebug() << "SOCKS Creating connection" << sp->GetConnectionId();
bool proxy_does_lookups = (socket->proxy().capabilities() & QNetworkProxy::HostNameLookupCapability);
qDebug() << "Direct" << proxy_does_lookups;
if(sp->GetHostName().IsHostName()) {
if(proxy_does_lookups) {
// Connect directly to hostname
qDebug() << "SOCKS ConnectToHost Direct" << sp->GetHostName().GetName() << ":"
<< sp->GetHostName().GetPort() << (sp->GetHostName().IsHostName() ? "DNS" : "Address");
socket->connectToHost(sp->GetHostName().GetName(), sp->GetHostName().GetPort());
} else {
// Resolve hostname, then connect to IP address
qDebug() << "SOCKS Hostname" << sp->GetHostName().GetName();
int lookup_id = QHostInfo::lookupHost(sp->GetHostName().GetName(),
this, SLOT(TcpDnsLookupFinished(const QHostInfo &)));
TcpPendingDnsData dns_data = {socket, sp->GetHostName().GetPort()};
_tcp_pending_dns[lookup_id] = dns_data;
}
} else {
//-----------------------------------------------------------------------------
void
QGCCacheWorker::_lookupReady(QHostInfo info)
{
#if defined(__android__)
Q_UNUSED(info);
#else
_hostLookupID = 0;
if(info.error() == QHostInfo::NoError && info.addresses().size()) {
QTcpSocket socket;
QNetworkProxy tempProxy;
tempProxy.setType(QNetworkProxy::DefaultProxy);
socket.setProxy(tempProxy);
socket.connectToHost(info.addresses().first(), 80);
if (socket.waitForConnected(2000)) {
qCDebug(QGCTileCacheLog) << "Yes Internet Access";
emit internetStatus(true);
return;
}
}
qWarning() << "No Internet Access";
emit internetStatus(false);
#endif
}
bool QgsHelp::urlExists( const QString &url )
{
QUrl helpUrl( url );
QTcpSocket socket;
QgsSettings settings;
bool proxyEnabled = settings.value( QStringLiteral( "proxy/proxyEnabled" ), false ).toBool();
if ( proxyEnabled )
{
QNetworkProxy proxy;
QString proxyHost = settings.value( QStringLiteral( "proxy/proxyHost" ), QString() ).toString();
int proxyPort = settings.value( QStringLiteral( "proxy/proxyPort" ), QString() ).toString().toInt();
QString proxyUser = settings.value( QStringLiteral( "proxy/proxyUser" ), QString() ).toString();
QString proxyPassword = settings.value( QStringLiteral( "proxy/proxyPassword" ), QString() ).toString();
QString proxyTypeString = settings.value( QStringLiteral( "proxy/proxyType" ), QString() ).toString();
if ( proxyTypeString == QLatin1String( "DefaultProxy" ) )
{
QList<QNetworkProxy> proxies = QNetworkProxyFactory::systemProxyForQuery();
if ( !proxies.isEmpty() )
{
proxy = proxies.first();
}
}
else
{
QNetworkProxy::ProxyType proxyType = QNetworkProxy::DefaultProxy;
if ( proxyTypeString == QLatin1String( "Socks5Proxy" ) )
{
proxyType = QNetworkProxy::Socks5Proxy;
}
else if ( proxyTypeString == QLatin1String( "HttpProxy" ) )
{
proxyType = QNetworkProxy::HttpProxy;
}
else if ( proxyTypeString == QLatin1String( "HttpCachingProxy" ) )
{
proxyType = QNetworkProxy::HttpCachingProxy;
}
else if ( proxyTypeString == QLatin1String( "FtpCachingProxy" ) )
{
proxyType = QNetworkProxy::FtpCachingProxy;
}
proxy = QNetworkProxy( proxyType, proxyHost, proxyPort, proxyUser, proxyPassword );
}
socket.setProxy( proxy );
}
socket.connectToHost( helpUrl.host(), 80 );
if ( socket.waitForConnected() )
{
socket.write( "HEAD " + helpUrl.path().toUtf8() + " HTTP/1.1\r\n"
"Host: " + helpUrl.host().toUtf8() + "\r\n\r\n" );
if ( socket.waitForReadyRead() )
{
QByteArray bytes = socket.readAll();
if ( bytes.contains( "200 OK" ) || bytes.contains( "302 Found" ) )
{
return true;
}
}
}
return false;
}
void HttpProxy::onSocketReadyRead()
{
QTcpSocket *socket = qobject_cast<QTcpSocket *>(sender());
QTcpSocket *proxySocket = nullptr;
QByteArray reqData = socket->readAll();
int pos = reqData.indexOf("\r\n");
QByteArray reqLine = reqData.left(pos);
reqData.remove(0, pos + 2);
QList<QByteArray> entries = reqLine.split(' ');
QByteArray method = entries.value(0);
QByteArray address = entries.value(1);
QByteArray version = entries.value(2);
QString host;
quint16 port;
QString key;
if (method != "CONNECT") {
QUrl url = QUrl::fromEncoded(address);
if (!url.isValid()) {
emit info("Invalid URL: " + url.toString());
socket->disconnectFromHost();
return;
}
host = url.host();
port = url.port(80);
QString req = url.path();
if (url.hasQuery()) {
req.append('?').append(url.query());
}
reqLine = method + " " + req.toUtf8() + " " + version + "\r\n";
reqData.prepend(reqLine);
key = host + ':' + QString::number(port);
proxySocket = socket->findChild<QTcpSocket *>(key);
if (proxySocket) {
proxySocket->write(reqData);
return;//if we find an existing socket, then use it and return
}
} else {//CONNECT method
/*
* according to http://tools.ietf.org/html/draft-luotonen-ssl-tunneling-03
* the first line would CONNECT HOST:PORT VERSION
*/
QList<QByteArray> host_port_list = address.split(':');
host = QString(host_port_list.first());
port = host_port_list.last().toUShort();
}
proxySocket = new QTcpSocket(socket);
proxySocket->setProxy(upstreamProxy);
if (method != "CONNECT") {
proxySocket->setObjectName(key);
proxySocket->setProperty("reqData", reqData);
connect (proxySocket, &QTcpSocket::connected, this, &HttpProxy::onProxySocketConnected);
connect (proxySocket, &QTcpSocket::readyRead, this, &HttpProxy::onProxySocketReadyRead);
} else {
connect (proxySocket, &QTcpSocket::connected, this, &HttpProxy::onProxySocketConnectedHttps);
}
connect (proxySocket, &QTcpSocket::disconnected, proxySocket, &QTcpSocket::deleteLater);
connect (proxySocket, static_cast<void (QTcpSocket::*)(QAbstractSocket::SocketError)>(&QTcpSocket::error), this, &HttpProxy::onSocketError);
proxySocket->connectToHost(host, port);
}
int main(int argc, char * argv[])
{
/*
* Before starting main application, need to set 'QT_X11_NO_MITSHM=1'
* to make the runtime work with IBM PPC machine.
*/
#if defined (Q_OS_LINUX)
QByteArray val("1");
qputenv("QT_X11_NO_MITSHM", val);
#endif
// Create the QT application
QApplication app(argc, argv);
app.setQuitOnLastWindowClosed(false);
// Setup the settings management
QCoreApplication::setOrganizationName("pgadmin");
QCoreApplication::setOrganizationDomain("pgadmin.org");
QCoreApplication::setApplicationName(PGA_APP_NAME.toLower().replace(" ", ""));
#if QT_VERSION >= 0x050000
// Set high DPI pixmap to display icons clear on Qt widget.
QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
#endif
// Create a hash of the executable path so we can run copies side-by-side
QString homeDir = QDir::homePath();
unsigned long exeHash = sdbm((unsigned char *)argv[0]);
// Create the address file, that will be used to store the appserver URL for this instance
addrFileName = homeDir + (QString("/.%1.%2.addr").arg(PGA_APP_NAME).arg(exeHash)).remove(" ");
QFile addrFile(addrFileName);
// Create a system-wide semaphore keyed by app name, exe hash and the username
// to ensure instances are unique to the user and path
QString userName = qgetenv("USER"); // *nix
if (userName.isEmpty())
userName = qgetenv("USERNAME"); // Windows
QString semaName = QString("%1-%2-%3-sema").arg(PGA_APP_NAME).arg(userName).arg(exeHash);
QString shmemName = QString("%1-%2-%3-shmem").arg(PGA_APP_NAME).arg(userName).arg(exeHash);
QSystemSemaphore sema(semaName, 1);
sema.acquire();
#ifndef Q_OS_WIN32
// We may need to clean up stale shmem segments on *nix. Attaching and detaching
// should remove the segment if it is orphaned.
QSharedMemory stale_shmem(shmemName);
if (stale_shmem.attach())
stale_shmem.detach();
#endif
QSharedMemory shmem(shmemName);
bool is_running;
if (shmem.attach())
{
is_running = true;
}
else
{
shmem.create(1);
is_running = false;
}
sema.release();
QSettings settings;
if (is_running){
addrFile.open(QIODevice::ReadOnly | QIODevice::Text);
QTextStream in(&addrFile);
QString addr = in.readLine();
QString cmd = settings.value("BrowserCommand").toString();
if (!cmd.isEmpty())
{
cmd.replace("%URL%", addr);
QProcess::startDetached(cmd);
}
else
{
if (!QDesktopServices::openUrl(addr))
{
QString error(QWidget::tr("Failed to open the system default web browser. Is one installed?."));
QMessageBox::critical(NULL, QString(QWidget::tr("Fatal Error")), error);
exit(1);
}
}
return 0;
}
atexit(cleanup);
// In windows and linux, it is required to set application level proxy
// because socket bind logic to find free port gives socket creation error
// when system proxy is configured. We are also setting
// "setUseSystemConfiguration"=true to use the system proxy which will
// override this application level proxy. As this bug is fixed in Qt 5.9 so
// need to set application proxy for Qt version < 5.9.
//
#if defined (Q_OS_WIN) && QT_VERSION <= 0x050800
// Give dummy URL required to find proxy server configured in windows.
QNetworkProxyQuery proxyQuery(QUrl("https://www.pgadmin.org"));
QNetworkProxy l_proxy;
QList<QNetworkProxy> listOfProxies = QNetworkProxyFactory::systemProxyForQuery(proxyQuery);
if (listOfProxies.size())
{
l_proxy = listOfProxies[0];
// If host name is not empty means proxy server is configured.
if (!l_proxy.hostName().isEmpty()) {
QNetworkProxy::setApplicationProxy(QNetworkProxy());
}
}
#endif
#if defined (Q_OS_LINUX) && QT_VERSION <= 0x050800
QByteArray proxy_env;
proxy_env = qgetenv("http_proxy");
// If http_proxy environment is defined in linux then proxy server is configured.
if (!proxy_env.isEmpty()) {
QNetworkProxy::setApplicationProxy(QNetworkProxy());
}
#endif
// Display the spash screen
QSplashScreen *splash = new QSplashScreen();
splash->setPixmap(QPixmap(":/splash.png"));
splash->show();
app.processEvents(QEventLoop::AllEvents);
quint16 port = 0L;
// Find an unused port number. Essentially, we're just reserving one
// here that Flask will use when we start up the server.
// In order to use the socket, we need to free this socket ASAP.
// Hence - putting this code in a code block so the scope of the socket
// variable vanishes to make that socket available.
{
#if QT_VERSION >= 0x050000
QTcpSocket socket;
#if QT_VERSION >= 0x050900
socket.setProxy(QNetworkProxy::NoProxy);
#endif
socket.bind(0, QTcpSocket::ShareAddress);
#else
QUdpSocket socket;
socket.bind(0, QUdpSocket::ShareAddress);
#endif
port = socket.localPort();
}
// Generate a random key to authenticate the client to the server
QString key = QUuid::createUuid().toString();
key = key.mid(1, key.length() - 2);
// Generate the filename for the log
logFileName = homeDir + (QString("/.%1.%2.log").arg(PGA_APP_NAME).arg(exeHash)).remove(" ");
// Start the tray service
TrayIcon *trayicon = new TrayIcon(logFileName);
if (!trayicon->Init())
{
QString error = QString(QWidget::tr("An error occurred initialising the tray icon"));
QMessageBox::critical(NULL, QString(QWidget::tr("Fatal Error")), error);
exit(1);
}
// Fire up the webserver
Server *server;
bool done = false;
while (done != true)
{
server = new Server(port, key, logFileName);
if (!server->Init())
{
splash->finish(NULL);
qDebug() << server->getError();
QString error = QString(QWidget::tr("An error occurred initialising the application server:\n\n%1")).arg(server->getError());
QMessageBox::critical(NULL, QString(QWidget::tr("Fatal Error")), error);
exit(1);
}
server->start();
// This is a hack to give the server a chance to start and potentially fail. As
// the Python interpreter is a synchronous call, we can't check for proper startup
// easily in a more robust way - we have to rely on a clean startup not returning.
// It should always fail pretty quickly, and take longer to start if it succeeds, so
// we don't really get a visible delay here.
delay(1000);
// Any errors?
if (server->isFinished() || server->getError().length() > 0)
{
splash->finish(NULL);
qDebug() << server->getError();
QString error = QString(QWidget::tr("An error occurred initialising the application server:\n\n%1")).arg(server->getError());
QMessageBox::critical(NULL, QString(QWidget::tr("Fatal Error")), error);
// Allow the user to tweak the Python Path if needed
bool ok;
ConfigWindow *dlg = new ConfigWindow();
dlg->setWindowTitle(QWidget::tr("Configuration"));
dlg->setBrowserCommand(settings.value("BrowserCommand").toString());
dlg->setPythonPath(settings.value("PythonPath").toString());
dlg->setApplicationPath(settings.value("ApplicationPath").toString());
dlg->setModal(true);
ok = dlg->exec();
QString browsercommand = dlg->getBrowserCommand();
QString pythonpath = dlg->getPythonPath();
QString applicationpath = dlg->getApplicationPath();
if (ok)
{
settings.setValue("BrowserCommand", browsercommand);
settings.setValue("PythonPath", pythonpath);
settings.setValue("ApplicationPath", applicationpath);
settings.sync();
}
else
{
exit(1);
}
delete server;
}
else
done = true;
}
// Ensure the server gets cleaned up later
QObject::connect(server, SIGNAL(finished()), server, SLOT(deleteLater()));
// Generate the app server URL
QString appServerUrl = QString("http://127.0.0.1:%1/?key=%2").arg(port).arg(key);
// Read the server connection timeout from the registry or set the default timeout.
int timeout = settings.value("ConnectionTimeout", 30).toInt();
// Now the server should be up, we'll attempt to connect and get a response.
// We'll retry in a loop a few time before aborting if necessary.
QTime endTime = QTime::currentTime().addSecs(timeout);
bool alive = false;
while(QTime::currentTime() <= endTime)
{
alive = PingServer(QUrl(appServerUrl));
if (alive)
{
break;
}
delay(200);
}
// Attempt to connect one more time in case of a long network timeout while looping
if (!alive && !PingServer(QUrl(appServerUrl)))
{
splash->finish(NULL);
QString error(QWidget::tr("The application server could not be contacted."));
QMessageBox::critical(NULL, QString(QWidget::tr("Fatal Error")), error);
exit(1);
}
// Stash the URL for any duplicate processes to open
if (addrFile.open(QIODevice::WriteOnly))
{
addrFile.setPermissions(QFile::ReadOwner|QFile::WriteOwner);
QTextStream out(&addrFile);
out << appServerUrl << endl;
}
// Go!
trayicon->setAppServerUrl(appServerUrl);
// Enable the shutdown server menu as server started successfully.
trayicon->enableShutdownMenu();
QString cmd = settings.value("BrowserCommand").toString();
if (!cmd.isEmpty())
{
cmd.replace("%URL%", appServerUrl);
QProcess::startDetached(cmd);
}
else
{
if (!QDesktopServices::openUrl(appServerUrl))
{
QString error(QWidget::tr("Failed to open the system default web browser. Is one installed?."));
QMessageBox::critical(NULL, QString(QWidget::tr("Fatal Error")), error);
exit(1);
}
}
QObject::connect(trayicon, SIGNAL(shutdownSignal(QUrl)), server, SLOT(shutdown(QUrl)));
splash->finish(NULL);
return app.exec();
}
