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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qbluetoothserver.h"
#include "qbluetoothserver_p.h"
#include "qbluetoothsocket.h"
#include "qbluetoothlocaldevice.h"
#include <QtCore/QLoggingCategory>
#include <QtCore/QSocketNotifier>
#include <winsock2.h>
#include <ws2bth.h>
#include <bluetoothapis.h>
#include <errno.h>
QT_BEGIN_NAMESPACE
Q_DECLARE_LOGGING_CATEGORY(QT_BT_WINDOWS)
QBluetoothServerPrivate::QBluetoothServerPrivate(QBluetoothServiceInfo::Protocol sType,
QBluetoothServer *parent)
: maxPendingConnections(1), serverType(sType), q_ptr(parent),
m_lastError(QBluetoothServer::NoError)
{
Q_Q(QBluetoothServer);
Q_ASSERT(sType == QBluetoothServiceInfo::RfcommProtocol);
socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol, q);
}
QBluetoothServerPrivate::~QBluetoothServerPrivate()
{
}
void QBluetoothServerPrivate::_q_newConnection()
{
// disable socket notifier until application calls nextPendingConnection().
socketNotifier->setEnabled(false);
emit q_ptr->newConnection();
}
void QBluetoothServer::close()
{
Q_D(QBluetoothServer);
delete d->socketNotifier;
d->socketNotifier = nullptr;
d->socket->close();
}
bool QBluetoothServer::listen(const QBluetoothAddress &address, quint16 port)
{
Q_D(QBluetoothServer);
if (d->serverType != QBluetoothServiceInfo::RfcommProtocol) {
qCWarning(QT_BT_WINDOWS) << "Protocol is not supported.";
d->m_lastError = QBluetoothServer::UnsupportedProtocolError;
emit error(d->m_lastError);
return false;
}
if (d->socket->state() == QBluetoothSocket::ListeningState) {
qCWarning(QT_BT_WINDOWS) << "Socket already in listen mode, close server first";
return false;
}
const QBluetoothLocalDevice device(address);
if (!device.isValid()) {
qCWarning(QT_BT_WINDOWS) << "Device does not support Bluetooth or"
<< address.toString() << "is not a valid local adapter";
d->m_lastError = QBluetoothServer::UnknownError;
emit error(d->m_lastError);
return false;
}
const QBluetoothLocalDevice::HostMode hostMode = device.hostMode();
if (hostMode == QBluetoothLocalDevice::HostPoweredOff) {
d->m_lastError = QBluetoothServer::PoweredOffError;
emit error(d->m_lastError);
qCWarning(QT_BT_WINDOWS) << "Bluetooth device is powered off";
return false;
}
int sock = d->socket->socketDescriptor();
if (sock < 0) {
/* Negative socket descriptor is not always an error case.
* Another cause could be a call to close()/abort().
* Check whether we can recover by re-creating the socket.
*/
delete d->socket;
d->socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol, this);
sock = d->socket->socketDescriptor();
if (sock < 0) {
d->m_lastError = InputOutputError;
emit error(d->m_lastError);
return false;
}
}
if (sock < 0)
return false;
SOCKADDR_BTH addr = {};
addr.addressFamily = AF_BTH;
addr.port = (port == 0) ? BT_PORT_ANY : port;
addr.btAddr = address.toUInt64();
if (::bind(sock, reinterpret_cast<sockaddr *>(&addr), sizeof(SOCKADDR_BTH)) < 0) {
if (errno == EADDRINUSE)
d->m_lastError = ServiceAlreadyRegisteredError;
else
d->m_lastError = InputOutputError;
emit error(d->m_lastError);
return false;
}
if (::listen(sock, d->maxPendingConnections) < 0) {
d->m_lastError = InputOutputError;
emit error(d->m_lastError);
return false;
}
d->socket->setSocketState(QBluetoothSocket::ListeningState);
if (!d->socketNotifier) {
d->socketNotifier = new QSocketNotifier(d->socket->socketDescriptor(),
QSocketNotifier::Read, this);
connect(d->socketNotifier, &QSocketNotifier::activated, this, [d](){
d->_q_newConnection();
});
}
return true;
}
void QBluetoothServer::setMaxPendingConnections(int numConnections)
{
Q_UNUSED(numConnections);
}
bool QBluetoothServer::hasPendingConnections() const
{
Q_D(const QBluetoothServer);
if (!d || !d->socketNotifier)
return false;
// if the socket notifier is disabled there is a pending connection waiting for us to accept.
return !d->socketNotifier->isEnabled();
}
QBluetoothSocket *QBluetoothServer::nextPendingConnection()
{
Q_D(QBluetoothServer);
if (!hasPendingConnections())
return nullptr;
if (d->serverType != QBluetoothServiceInfo::RfcommProtocol)
return nullptr;
SOCKADDR_BTH addr = {};
int length = sizeof(SOCKADDR_BTH);
int pending = ::accept(d->socket->socketDescriptor(),
reinterpret_cast<sockaddr *>(&addr), &length);
QBluetoothSocket *newSocket = nullptr;
if (pending >= 0) {
newSocket = new QBluetoothSocket();
newSocket->setSocketDescriptor(pending, QBluetoothServiceInfo::RfcommProtocol);
}
d->socketNotifier->setEnabled(true);
return newSocket;
}
QBluetoothAddress QBluetoothServer::serverAddress() const
{
Q_D(const QBluetoothServer);
return d->socket->localAddress();
}
quint16 QBluetoothServer::serverPort() const
{
Q_D(const QBluetoothServer);
return d->socket->localPort();
}
void QBluetoothServer::setSecurityFlags(QBluetooth::SecurityFlags security)
{
Q_UNUSED(security);
}
QBluetooth::SecurityFlags QBluetoothServer::securityFlags() const
{
return QBluetooth::NoSecurity;
}
QT_END_NAMESPACE