winrt: Add bluetooth server support

Task-numer: QTBUG-37779
Change-Id: Ieb3ed5dfea7d60b3875cbe97bb26f8060bebcc17
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>

1 files changed, 243 insertions, 0 deletions

diff --git a/src/bluetooth/qbluetoothserver_winrt.cpp b/src/bluetooth/qbluetoothserver_winrt.cpp
new file mode 100644
index 00000000..effe4dc9
--- /dev/null
+++ b/src/bluetooth/qbluetoothserver_winrt.cpp
@@ -0,0 +1,243 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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 "qbluetoothsocket_p.h"
+
+#include <QtCore/QLoggingCategory>
+#include <qfunctions_winrt.h>
+
+#include <windows.networking.h>
+#include <windows.networking.connectivity.h>
+#include <windows.networking.sockets.h>
+
+using namespace Microsoft::WRL;
+using namespace Microsoft::WRL::Wrappers;
+using namespace ABI::Windows::Devices;
+using namespace ABI::Windows::Devices::Enumeration;
+using namespace ABI::Windows::Foundation;
+using namespace ABI::Windows::Networking;
+using namespace ABI::Windows::Networking::Sockets;
+using namespace ABI::Windows::Networking::Connectivity;
+
+typedef ITypedEventHandler<StreamSocketListener *, StreamSocketListenerConnectionReceivedEventArgs *> ClientConnectedHandler;
+
+QT_BEGIN_NAMESPACE
+
+Q_DECLARE_LOGGING_CATEGORY(QT_BT_WINRT)
+
+QHash<QBluetoothServerPrivate *, int> __fakeServerPorts;
+
+QBluetoothServerPrivate::QBluetoothServerPrivate(QBluetoothServiceInfo::Protocol sType)
+    : maxPendingConnections(1), serverType(sType), m_lastError(QBluetoothServer::NoError), socket(0)
+{
+    socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
+}
+
+QBluetoothServerPrivate::~QBluetoothServerPrivate()
+{
+    deactivateActiveListening();
+    __fakeServerPorts.remove(this);
+    if (socket)
+        delete socket;
+}
+
+bool QBluetoothServerPrivate::isListening() const
+{
+    return __fakeServerPorts.contains(const_cast<QBluetoothServerPrivate *>(this));
+}
+
+bool QBluetoothServerPrivate::initiateActiveListening(const QString &serviceName)
+{
+    HStringReference serviceNameRef(reinterpret_cast<LPCWSTR>(serviceName.utf16()));
+
+    ComPtr<IAsyncAction> bindAction;
+    HRESULT hr = socketListener->BindServiceNameAsync(serviceNameRef.Get(), &bindAction);
+    Q_ASSERT_SUCCEEDED(hr);
+    hr = QWinRTFunctions::await(bindAction);
+    Q_ASSERT_SUCCEEDED(hr);
+    return true;
+}
+
+bool QBluetoothServerPrivate::deactivateActiveListening()
+{
+    if (!isListening())
+        return true;
+
+    HRESULT hr;
+    hr = socketListener->remove_ConnectionReceived(connectionToken);
+    Q_ASSERT_SUCCEEDED(hr);
+    return true;
+}
+
+HRESULT QBluetoothServerPrivate::handleClientConnection(IStreamSocketListener *listener,
+                                                        IStreamSocketListenerConnectionReceivedEventArgs *args)
+{
+    Q_Q(QBluetoothServer);
+    if (!socketListener || socketListener.Get() != listener) {
+        qCDebug(QT_BT_WINRT) << "Accepting connection from wrong listener. We should not be here.";
+        Q_UNREACHABLE();
+        return S_OK;
+    }
+
+    HRESULT hr;
+    ComPtr<IStreamSocket> socket;
+    hr = args->get_Socket(&socket);
+    Q_ASSERT_SUCCEEDED(hr);
+    QMutexLocker locker(&pendingConnectionsMutex);
+    if (pendingConnections.count() < maxPendingConnections) {
+        qCDebug(QT_BT_WINRT) << "Accepting connection";
+        pendingConnections.append(socket);
+        q->newConnection();
+    } else {
+        qCDebug(QT_BT_WINRT) << "Refusing connection";
+    }
+
+    return S_OK;
+}
+
+void QBluetoothServer::close()
+{
+    Q_D(QBluetoothServer);
+
+    d->deactivateActiveListening();
+    __fakeServerPorts.remove(d);
+}
+
+bool QBluetoothServer::listen(const QBluetoothAddress &address, quint16 port)
+{
+    Q_UNUSED(address);
+    Q_D(QBluetoothServer);
+    if (serverType() != QBluetoothServiceInfo::RfcommProtocol) {
+        d->m_lastError = UnsupportedProtocolError;
+        emit error(d->m_lastError);
+        return false;
+    }
+
+    if (isListening())
+        return false;
+
+    HRESULT hr;
+    hr = RoActivateInstance(HString::MakeReference(RuntimeClass_Windows_Networking_Sockets_StreamSocketListener).Get(),
+                            &d->socketListener);
+    Q_ASSERT_SUCCEEDED(hr);
+    hr = d->socketListener->add_ConnectionReceived(Callback<ClientConnectedHandler>(d, &QBluetoothServerPrivate::handleClientConnection).Get(),
+                                                 &d->connectionToken);
+    Q_ASSERT_SUCCEEDED(hr);
+
+    //We can not register an actual Rfcomm port, because the platform does not allow it
+    //but we need a way to associate a server with a service
+    if (port == 0) { //Try to assign a non taken port id
+        for (int i = 1; ; i++){
+            if (__fakeServerPorts.key(i) == 0) {
+                port = i;
+                break;
+            }
+        }
+    }
+
+    if (__fakeServerPorts.key(port) == 0) {
+        __fakeServerPorts[d] = port;
+
+        qCDebug(QT_BT_WINRT) << "Port" << port << "registered";
+    } else {
+        qCWarning(QT_BT_WINRT) << "server with port" << port << "already registered or port invalid";
+        d->m_lastError = ServiceAlreadyRegisteredError;
+        emit error(d->m_lastError);
+        return false;
+    }
+
+    return true;
+}
+
+void QBluetoothServer::setMaxPendingConnections(int numConnections)
+{
+    Q_D(QBluetoothServer);
+    QMutexLocker locker(&d->pendingConnectionsMutex);
+    d->maxPendingConnections = numConnections;
+}
+
+bool QBluetoothServer::hasPendingConnections() const
+{
+    Q_D(const QBluetoothServer);
+    QMutexLocker locker(&d->pendingConnectionsMutex);
+    return !d->pendingConnections.isEmpty();
+}
+
+QBluetoothSocket *QBluetoothServer::nextPendingConnection()
+{
+    Q_D(QBluetoothServer);
+
+    ComPtr<IStreamSocket> socket = d->pendingConnections.takeFirst();
+
+    QBluetoothSocket *newSocket = new QBluetoothSocket();
+    bool success = newSocket->d_ptr->setSocketDescriptor(qintptr(socket.Get()), d->serverType);
+    if (!success) {
+        delete newSocket;
+        newSocket = 0;
+    }
+
+    return newSocket;
+}
+
+QBluetoothAddress QBluetoothServer::serverAddress() const
+{
+    return QBluetoothAddress();
+}
+
+quint16 QBluetoothServer::serverPort() const
+{
+    //We return the fake port
+    Q_D(const QBluetoothServer);
+    return __fakeServerPorts.value((QBluetoothServerPrivate*)d, 0);
+}
+
+void QBluetoothServer::setSecurityFlags(QBluetooth::SecurityFlags security)
+{
+    Q_UNUSED(security);
+}
+
+QBluetooth::SecurityFlags QBluetoothServer::securityFlags() const
+{
+    return QBluetooth::NoSecurity;
+}
+
+QT_END_NAMESPACE