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#include <assert.h>
#include <qsocket.h>
#include <qtimer.h>
#include <string.h>
#include "krfbconnection.h"
#include "krfblogin.h"
#include "krfbserver.h"
#include "krfbdecoder.h"
#include "krfbbuffer.h"
KRFBConnection::KRFBConnection( QObject *parent )
: QObject( parent, "KRFBConnection" )
{
portBase_ = 5900;
currentState_ = Disconnected;
sock = 0;
minData_ = 0;
options_ = new KRFBServer();
updater = 0;
decoder_ = 0;
buffer_ = 0;
}
KRFBConnection::~KRFBConnection()
{
if ( ( currentState_ != Disconnected ) && ( currentState_ != Disconnecting ) && sock ) {
disconnectDone();
}
delete options_;
}
void KRFBConnection::connectTo( KRFBServer server)
{
if ( currentState_ != Disconnected )
disconnect();
(*options_)=server;
sock = new QSocket( this, "rfbSocket" );
CHECK_PTR( sock );
// Connect to something to notice connection or error
connect( sock, SIGNAL( error( int ) ), SLOT( gotSocketError( int ) ) );
connect( sock, SIGNAL( connected() ), SLOT( gotSocketConnection() ) );
qWarning( "Connecting..." );
currentState_ = Connecting;
sock->connectToHost( options_->hostname.latin1(), portBase_ + options_->display );
}
void KRFBConnection::disconnect()
{
qWarning( "Disconnecting from server" );
if ( ( currentState_ != Disconnected )
&& ( currentState_ != Disconnecting )
&& sock ) {
currentState_ = Disconnecting;
connect( sock, SIGNAL( delayedCloseFinished() ), SLOT( disconnectDone() ) );
sock->close();
if ( sock->state() != QSocket::Closing )
disconnectDone();
}
}
void KRFBConnection::disconnectDone()
{
currentState_ = Disconnected;
delete sock;
sock = 0;
minData_ = 0;
delete updater;
delete decoder_;
delete buffer_;
emit disconnected();
}
void KRFBConnection::gotSocketConnection()
{
currentState_ = LoggingIn;
qWarning( "Connected, logging in..." );
static QString statusMsg = tr( "Connected" );
emit statusChanged( statusMsg );
// Do some login stuff
login = new KRFBLogin( this );
}
void KRFBConnection::gotRFBConnection()
{
qWarning( "Logged into server" );
currentState_ = Connected;
emit connected();
// Create the decoder and start doing stuff
decoder_ = new KRFBDecoder( this );
CHECK_PTR( decoder_ );
buffer_ = new KRFBBuffer( decoder_, this, "RFB Buffer" );
CHECK_PTR( buffer_ );
decoder_->setBuffer( buffer_ );
connect( decoder_, SIGNAL( status( const QString & ) ),
this, SIGNAL( statusChanged( const QString & ) ) );
emit loggedIn();
decoder_->start();
updater = new QTimer;
connect( updater, SIGNAL( timeout() ), SLOT( updateTimer() ) );
updater->start( options_->updateRate );
}
void KRFBConnection::gotSocketError( int err )
{
currentState_ = Error;
// Do some error handling stuff
qWarning( "KRFBConnection: Socket error %d", err );
static QString refused = tr( "Connection Refused" );
static QString host = tr( "Host not found" );
static QString read = tr( "Read Error: QSocket reported an error reading\n"
"data, the remote host has probably dropped the\n"
"connection." );
static QString confused = tr( "QSocket reported an invalid error code" );
QString msg;
switch ( err ) {
case QSocket::ErrConnectionRefused:
msg = refused;
break;
case QSocket::ErrHostNotFound:
msg = host;
break;
case QSocket::ErrSocketRead:
msg = read;
break;
default:
msg = confused;
};
QObject::disconnect( sock, SIGNAL( readyRead() ), this, SLOT( gotMoreData() ) );
delete sock;
sock = 0;
currentState_ = Disconnected;
emit error( msg );
}
void KRFBConnection::gotMoreData()
{
assert( minData_ > 0 );
if ( sock->size() >= minData_ ) {
minData_ = 0;
QObject::disconnect( sock, SIGNAL( readyRead() ), this, SLOT( gotMoreData() ) );
emit gotEnoughData();
}
}
void KRFBConnection::waitForData( unsigned int sz )
{
assert( minData_ == 0 );
assert( sz > 0 );
assert( currentState_ != Error );
if ( sock->size() >= sz ) {
// qWarning( "No need to wait for data" );
emit gotEnoughData();
}
else {
// qWarning( "Waiting for %u bytes", sz );
minData_ = sz;
connect( sock, SIGNAL( readyRead() ), SLOT( gotMoreData() ) );
}
}
int KRFBConnection::read( void *buf, int sz )
{
return sock->readBlock( (char *) buf, sz );
}
int KRFBConnection::write( void *buf, int sz )
{
return sock->writeBlock( (const char *) buf, sz );
}
KRFBConnection::State KRFBConnection::state() const
{
return currentState_;
}
void KRFBConnection::setPortBase( int base )
{
portBase_ = base;
}
int KRFBConnection::portBase() const
{
return portBase_;
}
void KRFBConnection::updateTimer()
{
decoder_->sendUpdateRequest( true );
}
void KRFBConnection::refresh()
{
decoder_->sendUpdateRequest( false );
}
void KRFBConnection::sendCutText( const QString &text )
{
decoder_->sendCutEvent( text );
}
const QUrl &KRFBConnection::url()
{
url_.setProtocol( "vnc" );
url_.setPort( display() );
url_.setHost( host() );
url_.setPath( "/" );
return url_;
}
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