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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtcpserverconnection.h"
#include "qpacketprotocol.h"
#include <QtCore/qplugin.h>
#include <QtNetwork/qtcpserver.h>
#include <QtNetwork/qtcpsocket.h>
#include <private/qqmldebugserver_p.h>
QT_BEGIN_NAMESPACE
class QTcpServerConnectionPrivate {
public:
QTcpServerConnectionPrivate();
int portFrom;
int portTo;
bool block;
QString hostaddress;
QTcpSocket *socket;
QPacketProtocol *protocol;
QTcpServer *tcpServer;
QQmlDebugServer *debugServer;
};
QTcpServerConnectionPrivate::QTcpServerConnectionPrivate() :
portFrom(0),
portTo(0),
block(false),
socket(0),
protocol(0),
tcpServer(0),
debugServer(0)
{
}
QTcpServerConnection::QTcpServerConnection() :
d_ptr(new QTcpServerConnectionPrivate)
{
}
QTcpServerConnection::~QTcpServerConnection()
{
if (isConnected())
disconnect();
delete d_ptr;
}
void QTcpServerConnection::setServer(QQmlDebugServer *server)
{
Q_D(QTcpServerConnection);
d->debugServer = server;
}
bool QTcpServerConnection::isConnected() const
{
Q_D(const QTcpServerConnection);
return d->socket && d->socket->state() == QTcpSocket::ConnectedState;
}
void QTcpServerConnection::send(const QList<QByteArray> &messages)
{
Q_D(QTcpServerConnection);
if (!isConnected()
|| !d->protocol || !d->socket)
return;
foreach (const QByteArray &message, messages) {
QPacket pack;
pack.writeRawData(message.data(), message.length());
d->protocol->send(pack);
}
d->socket->flush();
}
void QTcpServerConnection::disconnect()
{
Q_D(QTcpServerConnection);
while (d->socket && d->socket->bytesToWrite() > 0) {
if (!d->socket->waitForBytesWritten()) {
qWarning("QML Debugger: Failed to send remaining %lld bytes on disconnect.",
d->socket->bytesToWrite());
break;
}
}
// protocol might still be processing packages at this point
d->protocol->deleteLater();
d->protocol = 0;
d->socket->deleteLater();
d->socket = 0;
}
bool QTcpServerConnection::waitForMessage()
{
Q_D(QTcpServerConnection);
return d->protocol->waitForReadyRead(-1);
}
bool QTcpServerConnection::setPortRange(int portFrom, int portTo, bool block,
const QString &hostaddress)
{
Q_D(QTcpServerConnection);
d->portFrom = portFrom;
d->portTo = portTo;
d->block = block;
d->hostaddress = hostaddress;
return listen();
}
void QTcpServerConnection::waitForConnection()
{
Q_D(QTcpServerConnection);
d->tcpServer->waitForNewConnection(-1);
}
bool QTcpServerConnection::listen()
{
Q_D(QTcpServerConnection);
d->tcpServer = new QTcpServer(this);
QObject::connect(d->tcpServer, SIGNAL(newConnection()), this, SLOT(newConnection()));
QHostAddress hostaddress;
if (!d->hostaddress.isEmpty()) {
if (!hostaddress.setAddress(d->hostaddress)) {
hostaddress = QHostAddress::Any;
qDebug("QML Debugger: Incorrect host address provided. So accepting connections "
"from any host.");
}
} else {
hostaddress = QHostAddress::Any;
}
int port = d->portFrom;
do {
if (d->tcpServer->listen(hostaddress, port)) {
qDebug("QML Debugger: Waiting for connection on port %d...", port);
break;
}
++port;
} while (port <= d->portTo);
if (port > d->portTo) {
if (d->portFrom == d->portTo)
qWarning("QML Debugger: Unable to listen to port %d.", d->portFrom);
else
qWarning("QML Debugger: Unable to listen to ports %d - %d.", d->portFrom, d->portTo);
return false;
} else {
return true;
}
}
void QTcpServerConnection::readyRead()
{
Q_D(QTcpServerConnection);
if (!d->protocol)
return;
QPacket packet = d->protocol->read();
QByteArray content = packet.data();
d->debugServer->receiveMessage(content);
}
void QTcpServerConnection::newConnection()
{
Q_D(QTcpServerConnection);
if (d->socket && d->socket->peerPort()) {
qWarning("QML Debugger: Another client is already connected.");
QTcpSocket *faultyConnection = d->tcpServer->nextPendingConnection();
delete faultyConnection;
return;
}
delete d->socket;
d->socket = d->tcpServer->nextPendingConnection();
d->socket->setParent(this);
d->protocol = new QPacketProtocol(d->socket, this);
QObject::connect(d->protocol, SIGNAL(readyRead()), this, SLOT(readyRead()));
QObject::connect(d->protocol, SIGNAL(invalidPacket()), this, SLOT(invalidPacket()));
if (d->block) {
d->protocol->waitForReadyRead(-1);
}
}
void QTcpServerConnection::invalidPacket()
{
qWarning("QML Debugger: Received a corrupted packet! Giving up ...");
}
QT_END_NAMESPACE
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