Unverified Commit d711547a authored by Saikrishna Arcot's avatar Saikrishna Arcot Committed by Àlex Fiestas
Browse files

Add initial Bluetooth backend implementation.

KDE Connect runs, and the bluetooth service gets published in the SDP
(service discovery protocol), which other devices use to determine what
services are available.

The getPairedDevices() method in the link provider class uses D-Bus to get
the list of paired devices, since Qt doesn't have a method giving that
information. As a result, that part of the code only works on Linux.

REVIEW: 122174
parent 937d919c
......@@ -10,9 +10,11 @@ cmake_minimum_required(VERSION 2.8.12)
find_package(ECM 0.0.9 REQUIRED NO_MODULE)
set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR} ${CMAKE_SOURCE_DIR}/cmake)
find_package(Qt5 5.2 REQUIRED COMPONENTS Quick)
find_package(Qt5 5.2 REQUIRED COMPONENTS Quick Bluetooth)
find_package(KF5 REQUIRED COMPONENTS I18n ConfigWidgets DBusAddons)
find_package(KF5DocTools)
find_package(Qca-qt5 2.1.0 REQUIRED)
include_directories(${CMAKE_SOURCE_DIR})
......
......@@ -8,6 +8,7 @@ include_directories(
add_subdirectory(backends/lan)
add_subdirectory(backends/loopback)
add_subdirectory(backends/bluetooth)
find_package(KF5Notifications 5.9 REQUIRED)
......@@ -17,6 +18,7 @@ set(kdeconnectcore_SRCS
backends/linkprovider.cpp
backends/devicelink.cpp
backends/pairinghandler.cpp
backends/devicelinereader.cpp
kdeconnectplugin.cpp
kdeconnectpluginconfig.cpp
......@@ -37,6 +39,7 @@ PUBLIC
Qt5::Network
KF5::CoreAddons
qca-qt5
Qt5::Bluetooth
PRIVATE
Qt5::DBus
Qt5::Gui
......
set(backends_kdeconnect_SRCS
${backends_kdeconnect_SRCS}
backends/bluetooth/bluetoothlinkprovider.cpp
backends/bluetooth/bluetoothdevicelink.cpp
PARENT_SCOPE
)
/**
* Copyright 2015 Saikrishna Arcot <saiarcot895@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "bluetoothdevicelink.h"
#include "../linkprovider.h"
BluetoothDeviceLink::BluetoothDeviceLink(const QString& deviceId, LinkProvider* parent, QBluetoothSocket* socket)
: DeviceLink(deviceId, parent)
, mBluetoothSocket(new DeviceLineReader(socket))
{
connect(mBluetoothSocket, SIGNAL(readyRead()),
this, SLOT(dataReceived()));
//We take ownership of the socket.
//When the link provider distroys us,
//the socket (and the reader) will be
//destroyed as well
connect(mBluetoothSocket, SIGNAL(disconnected()),
this, SLOT(deleteLater()));
mBluetoothSocket->setParent(this);
}
/*void BluetoothDeviceLink::sendPayload(const QSharedPointer<QIODevice>& mInput)
{
while ( mInput->bytesAvailable() > 0 )
{
qint64 bytes = qMin(mInput->bytesAvailable(), (qint64)4096);
int w = mBluetoothSocket->write(mInput->read(bytes));
if (w<0) {
qWarning() << "error when writing data to upload" << bytes << mInput->bytesAvailable();
break;
}
else
{
while ( mBluetoothSocket->flush() );
}
}
mInput->close();
}*/
bool BluetoothDeviceLink::sendPackageEncrypted(QCA::PublicKey& key, NetworkPackage& np)
{
np.encrypt(key);
return sendPackage(np);
}
bool BluetoothDeviceLink::sendPackage(NetworkPackage& np)
{
int written = mBluetoothSocket->write(np.serialize());
if (np.hasPayload()) {
qWarning() << "Bluetooth backend does not support payloads.";
}
return (written != -1);
}
void BluetoothDeviceLink::dataReceived()
{
if (mBluetoothSocket->bytesAvailable() == 0) return;
const QByteArray package = mBluetoothSocket->readLine();
//kDebug(debugArea()) << "BluetoothDeviceLink dataReceived" << package;
NetworkPackage unserialized(QString::null);
NetworkPackage::unserialize(package, &unserialized);
if (unserialized.isEncrypted()) {
//mPrivateKey should always be set when device link is added to device, no null-checking done here
NetworkPackage decrypted(QString::null);
unserialized.decrypt(mPrivateKey, &decrypted);
if (decrypted.hasPayloadTransferInfo()) {
qWarning() << "Bluetooth backend does not support payloads.";
}
Q_EMIT receivedPackage(decrypted);
} else {
if (unserialized.hasPayloadTransferInfo()) {
qWarning() << "Ignoring unencrypted payload";
}
Q_EMIT receivedPackage(unserialized);
}
if (mBluetoothSocket->bytesAvailable() > 0) {
QMetaObject::invokeMethod(this, "dataReceived", Qt::QueuedConnection);
}
}
/**
* Copyright 2015 Saikrishna Arcot <saiarcot895@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BLUETOOTHDEVICELINK_H
#define BLUETOOTHDEVICELINK_H
#include <QObject>
#include <QString>
#include <QtBluetooth/QBluetoothSocket>
#include "../devicelink.h"
#include "../devicelinereader.h"
class BluetoothDeviceLink
: public DeviceLink
{
Q_OBJECT
public:
BluetoothDeviceLink(const QString& deviceId, LinkProvider* parent, QBluetoothSocket* socket);
bool sendPackage(NetworkPackage& np);
bool sendPackageEncrypted(QCA::PublicKey& key, NetworkPackage& np);
private Q_SLOTS:
void dataReceived();
private:
DeviceLineReader* mBluetoothSocket;
//void sendPayload(const QSharedPointer<QIODevice>& mInput);
void sendMessage(const QString mMessage);
};
#endif
/**
* Copyright 2015 Saikrishna Arcot <saiarcot895@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "bluetoothlinkprovider.h"
#include "core_debug.h"
#include <KSharedConfig>
#include <KConfigGroup>
#include <QDBusArgument>
#include <QDBusConnection>
#include <QDBusInterface>
#include <QDBusReply>
#include "bluetoothdevicelink.h"
BluetoothLinkProvider::BluetoothLinkProvider()
{
if (!mDevice.isValid()) {
qCWarning(KDECONNECT_CORE) << "No local device found";
mBluetoothServer = NULL;
return;
}
mBluetoothServer = new QBluetoothServer(QBluetoothServiceInfo::RfcommProtocol, this);
mBluetoothServer->setSecurityFlags(QBluetooth::Encryption | QBluetooth::Secure);
connect(mBluetoothServer, SIGNAL(newConnection()), this, SLOT(serverNewConnection()));
mServiceUuid = QBluetoothUuid(QString("576bf9a0-98c9-11e4-bc89-0002a5d5c51b"));
connectTimer = new QTimer(this);
connectTimer->setInterval(30000);
connectTimer->setSingleShot(false);
#if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
connect(connectTimer, SIGNAL(timeout()), this, SLOT(connectToPairedDevices()));
#else
mServiceDiscoveryAgent = new QBluetoothServiceDiscoveryAgent(this);
mServiceDiscoveryAgent->setUuidFilter(mServiceUuid);
connect(mServiceDiscoveryAgent, SIGNAL(finished()), this, SLOT(serviceDiscoveryFinished()));
connect(connectTimer, SIGNAL(timeout()), mServiceDiscoveryAgent, SLOT(start()));
#endif
}
void BluetoothLinkProvider::onStart()
{
if (!mBluetoothServer) {
return;
}
#if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
connectToPairedDevices();
#else
mServiceDiscoveryAgent->start();
#endif
connectTimer->start();
mKdeconnectService = mBluetoothServer->listen(mServiceUuid, "KDE Connect");
onNetworkChange(QNetworkSession::Connected);
}
void BluetoothLinkProvider::onStop()
{
if (!mBluetoothServer) {
return;
}
connectTimer->stop();
mKdeconnectService.unregisterService();
mBluetoothServer->close();
}
//I'm in a new network, let's be polite and introduce myself
void BluetoothLinkProvider::onNetworkChange(QNetworkSession::State state)
{
Q_UNUSED(state);
}
QList<QBluetoothAddress> BluetoothLinkProvider::getPairedDevices() {
QDBusConnection bus = QDBusConnection::systemBus();
QDBusInterface manager_iface("org.bluez", "/","org.bluez.Manager", bus);
QDBusReply<QDBusObjectPath> devices = manager_iface.call("DefaultAdapter");
if (!devices.isValid()) {
qCWarning(KDECONNECT_CORE) << "Couldn't get default adapter:" << devices.error();
return QList<QBluetoothAddress>();
}
QDBusObjectPath defaultAdapter = devices.value();
QString defaultAdapterPath = defaultAdapter.path();
QDBusInterface devices_iface("org.bluez", defaultAdapterPath, "org.bluez.Adapter", bus);
QDBusMessage pairedDevices = devices_iface.call("ListDevices");
QDBusArgument pairedDevicesArg = pairedDevices.arguments().at(0).value<QDBusArgument>();
pairedDevicesArg.beginArray();
QList<QBluetoothAddress> pairedDevicesList;
while (!pairedDevicesArg.atEnd()) {
QVariant variant = pairedDevicesArg.asVariant();
QDBusObjectPath pairedDevice = qvariant_cast<QDBusObjectPath>(variant);
QString pairedDevicePath = pairedDevice.path();
QString pairedDeviceMac = pairedDevicePath.split(QChar('/')).last().remove("dev_").replace("_", ":");
pairedDevicesList.append(QBluetoothAddress(pairedDeviceMac));
}
return pairedDevicesList;
}
void BluetoothLinkProvider::connectToPairedDevices() {
QList<QBluetoothAddress> pairedDevices = getPairedDevices();
for (int i = 0; i < pairedDevices.size(); i++) {
QBluetoothAddress pairedDevice = pairedDevices.at(i);
if (mSockets.contains(pairedDevice)) {
continue;
}
QBluetoothSocket* socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol, this);
connect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/onStart: Connecting to " << pairedDevice.toString();
socket->connectToService(pairedDevice, mServiceUuid);
}
}
void BluetoothLinkProvider::connectError()
{
QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
if (!socket) return;
qCWarning(KDECONNECT_CORE) << "connectError: Couldn't connect to socket:" << socket->errorString();
disconnect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
disconnect(socket, SIGNAL(readyRead()), this, SLOT(serverDataReceived()));
disconnect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
mSockets.remove(socket->peerAddress());
socket->deleteLater();
}
void BluetoothLinkProvider::addLink(BluetoothDeviceLink* deviceLink, const QString& deviceId)
{
QMap< QString, DeviceLink* >::iterator oldLinkIterator = mLinks.find(deviceId);
if (oldLinkIterator != mLinks.end()) {
DeviceLink* oldLink = oldLinkIterator.value();
disconnect(oldLink, SIGNAL(destroyed(QObject*)),
this, SLOT(deviceLinkDestroyed(QObject*)));
oldLink->deleteLater();
mLinks.erase(oldLinkIterator);
}
mLinks[deviceId] = deviceLink;
}
//I'm the new device and I found an existing device
void BluetoothLinkProvider::serviceDiscoveryFinished()
{
QList<QBluetoothServiceInfo> services = mServiceDiscoveryAgent->discoveredServices();
foreach (QBluetoothServiceInfo info, services) {
if (mSockets.contains(info.device().address())) {
continue;
}
QBluetoothSocket* socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
connect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
socket->connectToService(info);
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serviceDiscoveryFinished: Connecting to " << socket->peerAddress().toString();
if (socket->error() != QBluetoothSocket::NoSocketError) {
qCWarning(KDECONNECT_CORE) << "BluetoothLinkProvider/serviceDiscoveryFinished: Socket connection error: " << socket->errorString();
}
}
}
//I'm the new device and I'm connected to the existing device. Time to get data.
void BluetoothLinkProvider::clientConnected()
{
QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
if (!socket) return;
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/clientConnected: Connected to " << socket->peerAddress().toString();
if (mSockets.contains(socket->peerAddress())) {
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/clientConnected: Duplicate connection to " << socket->peerAddress().toString();
socket->close();
socket->deleteLater();
return;
}
mSockets.insert(socket->peerAddress(), socket);
disconnect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
connect(socket, SIGNAL(readyRead()), this, SLOT(clientIdentityReceived()));
connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
}
//I'm the new device and the existing device sent me data.
void BluetoothLinkProvider::clientIdentityReceived()
{
QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
if (!socket) return;
QByteArray identityArray;
while (socket->bytesAvailable() > 0 || !identityArray.contains('\n')) {
identityArray += socket->readAll();
}
disconnect(socket, SIGNAL(readyRead()), this, SLOT(clientIdentityReceived()));
NetworkPackage receivedPackage("");
bool success = NetworkPackage::unserialize(identityArray, &receivedPackage);
if (!success || receivedPackage.type() != PACKAGE_TYPE_IDENTITY) {
qCDebug(KDECONNECT_CORE) << "BluetoothLinkProvider/clientIdentityReceived: Not an identification package (wuh?)";
mSockets.remove(socket->peerAddress());
socket->close();
socket->deleteLater();
return;
}
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/clientIdentityReceived: Received identity package from " << socket->peerAddress().toString();
disconnect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
const QString& deviceId = receivedPackage.get<QString>("deviceId");
BluetoothDeviceLink* deviceLink = new BluetoothDeviceLink(deviceId, this, socket);
NetworkPackage np2("");
NetworkPackage::createIdentityPackage(&np2);
success = deviceLink->sendPackage(np2);
if (success) {
qCDebug(KDECONNECT_CORE) << "Handshaking done (I'm the new device)";
connect(deviceLink, SIGNAL(destroyed(QObject*)),
this, SLOT(deviceLinkDestroyed(QObject*)));
Q_EMIT onConnectionReceived(receivedPackage, deviceLink);
//We kill any possible link from this same device
addLink(deviceLink, deviceId);
} else {
// Connection might be lost. Delete it.
delete deviceLink;
}
//We don't delete the socket because now it's owned by the BluetoothDeviceLink
}
//I'm the existing device, a new device is kindly introducing itself.
void BluetoothLinkProvider::serverNewConnection()
{
QBluetoothSocket* socket = mBluetoothServer->nextPendingConnection();
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverNewConnection:" << "Received connection from " << socket->peerAddress().toString();
if (mSockets.contains(socket->peerAddress())) {
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverNewConnection: Duplicate connection from " << socket->peerAddress().toString();
socket->close();
socket->deleteLater();
return;
}
connect(socket, SIGNAL(readyRead()), this, SLOT(serverDataReceived()));
connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
NetworkPackage np2("");
NetworkPackage::createIdentityPackage(&np2);
socket->write(np2.serialize());
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverNewConnection: Sent identity package to " << socket->peerAddress().toString();
mSockets.insert(socket->peerAddress(), socket);
}
//I'm the existing device and this is the answer to my identity package (data received)
void BluetoothLinkProvider::serverDataReceived()
{
QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
if (!socket) return;
QByteArray identityArray;
while (socket->bytesAvailable() > 0 || !identityArray.contains('\n')) {
identityArray += socket->readAll();
}
disconnect(socket, SIGNAL(readyRead()), this, SLOT(serverDataReceived()));
disconnect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
NetworkPackage receivedPackage("");
bool success = NetworkPackage::unserialize(identityArray, &receivedPackage);
if (!success || receivedPackage.type() != PACKAGE_TYPE_IDENTITY) {
qCDebug(KDECONNECT_CORE) << "BluetoothLinkProvider/serverDataReceived: Not an identity package.";
mSockets.remove(socket->peerAddress());
socket->close();
socket->deleteLater();
return;
}
qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverDataReceived: Received identity package from " << socket->peerAddress().toString();
const QString& deviceId = receivedPackage.get<QString>("deviceId");
BluetoothDeviceLink* deviceLink = new BluetoothDeviceLink(deviceId, this, socket);
connect(deviceLink, SIGNAL(destroyed(QObject*)),
this, SLOT(deviceLinkDestroyed(QObject*)));
Q_EMIT onConnectionReceived(receivedPackage, deviceLink);
addLink(deviceLink, deviceId);
}
void BluetoothLinkProvider::deviceLinkDestroyed(QObject* destroyedDeviceLink)
{
//kDebug(debugArea()) << "deviceLinkDestroyed";
const QString id = destroyedDeviceLink->property("deviceId").toString();
qCDebug(KDECONNECT_CORE()) << "Device disconnected:" << id;
QMap< QString, DeviceLink* >::iterator oldLinkIterator = mLinks.find(id);
if (oldLinkIterator != mLinks.end() && oldLinkIterator.value() == destroyedDeviceLink) {
mLinks.erase(oldLinkIterator);
}
}
void BluetoothLinkProvider::socketDisconnected()
{
QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
if (!socket) return;
disconnect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
mSockets.remove(mSockets.key(socket));
}
BluetoothLinkProvider::~BluetoothLinkProvider()
{
}
/**
* Copyright 2015 Saikrishna Arcot <saiarcot895@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License