526 lines
17 KiB
C++
526 lines
17 KiB
C++
/**
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* Copyright 2013 Albert Vaca <albertvaka@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "device.h"
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#ifdef interface // MSVC language extension, QDBusConnection uses this as a variable name
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#undef interface
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#endif
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#include <QDBusConnection>
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#include <QFile>
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#include <QStandardPaths>
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#include <KSharedConfig>
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#include <KConfigGroup>
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#include <KLocalizedString>
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#include <QIcon>
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#include <QDir>
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#include <QJsonArray>
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#include "core_debug.h"
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#include "kdeconnectplugin.h"
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#include "pluginloader.h"
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#include "backends/devicelink.h"
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#include "backends/linkprovider.h"
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#include "networkpackage.h"
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#include "kdeconnectconfig.h"
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#include "daemon.h"
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Q_LOGGING_CATEGORY(KDECONNECT_CORE, "kdeconnect.core")
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Device::Device(QObject* parent, const QString& id)
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: QObject(parent)
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, m_deviceId(id)
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, m_pairStatus(Device::Paired)
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, m_protocolVersion(NetworkPackage::ProtocolVersion) //We don't know it yet
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{
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KdeConnectConfig::DeviceInfo info = KdeConnectConfig::instance()->getTrustedDevice(id);
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m_deviceName = info.deviceName;
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m_deviceType = str2type(info.deviceType);
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m_publicKey = QCA::RSAPublicKey::fromPEM(info.publicKey);
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m_pairingTimeut.setSingleShot(true);
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m_pairingTimeut.setInterval(30 * 1000); //30 seconds of timeout
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connect(&m_pairingTimeut, SIGNAL(timeout()),
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this, SLOT(pairingTimeout()));
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//Register in bus
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QDBusConnection::sessionBus().registerObject(dbusPath(), this, QDBusConnection::ExportScriptableContents | QDBusConnection::ExportAdaptors);
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}
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Device::Device(QObject* parent, const NetworkPackage& identityPackage, DeviceLink* dl)
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: QObject(parent)
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, m_deviceId(identityPackage.get<QString>("deviceId"))
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, m_deviceName(identityPackage.get<QString>("deviceName"))
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, m_deviceType(str2type(identityPackage.get<QString>("deviceType")))
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, m_pairStatus(Device::NotPaired)
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, m_protocolVersion(identityPackage.get<int>("protocolVersion"))
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, m_incomingCapabilities(identityPackage.get<QStringList>("SupportedIncomingInterfaces", QStringList()).toSet())
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, m_outgoingCapabilities(identityPackage.get<QStringList>("SupportedOutgoingInterfaces", QStringList()).toSet())
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{
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addLink(identityPackage, dl);
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//Register in bus
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QDBusConnection::sessionBus().registerObject(dbusPath(), this, QDBusConnection::ExportScriptableContents | QDBusConnection::ExportAdaptors);
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//Implement deprecated signals
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connect(this, &Device::pairingChanged, this, [this](bool newPairing) {
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if (newPairing)
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Q_EMIT pairingSuccesful();
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else
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Q_EMIT unpaired();
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});
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}
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Device::~Device()
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{
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}
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bool Device::hasPlugin(const QString& name) const
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{
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return m_plugins.contains(name);
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}
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QStringList Device::loadedPlugins() const
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{
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return m_plugins.keys();
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}
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void Device::reloadPlugins()
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{
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QHash<QString, KdeConnectPlugin*> newPluginMap;
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QMultiMap<QString, KdeConnectPlugin*> newPluginsByIncomingInterface;
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QMultiMap<QString, KdeConnectPlugin*> newPluginsByOutgoingInterface;
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if (isPaired() && isReachable()) { //Do not load any plugin for unpaired devices, nor useless loading them for unreachable devices
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KConfigGroup pluginStates = KSharedConfig::openConfig(pluginsConfigFile())->group("Plugins");
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PluginLoader* loader = PluginLoader::instance();
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const bool deviceSupportsCapabilities = !m_incomingCapabilities.isEmpty() || !m_outgoingCapabilities.isEmpty();
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//Code borrowed from KWin
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foreach (const QString& pluginName, loader->getPluginList()) {
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QString enabledKey = pluginName + QString::fromLatin1("Enabled");
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bool isPluginEnabled = (pluginStates.hasKey(enabledKey) ? pluginStates.readEntry(enabledKey, false)
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: loader->getPluginInfo(pluginName).isEnabledByDefault());
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if (isPluginEnabled) {
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KdeConnectPlugin* plugin = m_plugins.take(pluginName);
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QStringList incomingInterfaces, outgoingInterfaces;
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if (plugin) {
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incomingInterfaces = m_pluginsByIncomingInterface.keys(plugin);
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outgoingInterfaces = m_pluginsByOutgoingInterface.keys(plugin);
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} else {
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const KPluginMetaData service = loader->getPluginInfo(pluginName);
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incomingInterfaces = KPluginMetaData::readStringList(service.rawData(), "X-KdeConnect-SupportedPackageType");
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outgoingInterfaces = KPluginMetaData::readStringList(service.rawData(), "X-KdeConnect-OutgoingPackageType");
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}
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//If we don't find intersection with the received on one end and the sent on the other, we don't
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//let the plugin stay
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//Also, if no capabilities are specified on the other end, we don't apply this optimizaton, as
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//we assume that the other client doesn't know about capabilities.
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const bool capabilitiesSupported = deviceSupportsCapabilities && (!incomingInterfaces.isEmpty() || !outgoingInterfaces.isEmpty());
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if (capabilitiesSupported
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&& (m_incomingCapabilities & outgoingInterfaces.toSet()).isEmpty()
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&& (m_outgoingCapabilities & incomingInterfaces.toSet()).isEmpty()
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) {
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delete plugin;
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continue;
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}
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if (!plugin) {
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plugin = loader->instantiatePluginForDevice(pluginName, this);
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}
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foreach(const QString& interface, incomingInterfaces) {
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newPluginsByIncomingInterface.insert(interface, plugin);
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}
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foreach(const QString& interface, outgoingInterfaces) {
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newPluginsByOutgoingInterface.insert(interface, plugin);
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}
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newPluginMap[pluginName] = plugin;
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}
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}
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}
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//Erase all left plugins in the original map (meaning that we don't want
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//them anymore, otherwise they would have been moved to the newPluginMap)
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qDeleteAll(m_plugins);
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m_plugins = newPluginMap;
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m_pluginsByIncomingInterface = newPluginsByIncomingInterface;
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m_pluginsByOutgoingInterface = newPluginsByOutgoingInterface;
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Q_FOREACH(KdeConnectPlugin* plugin, m_plugins) {
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plugin->connected();
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}
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Q_EMIT pluginsChanged();
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}
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QString Device::pluginsConfigFile() const
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{
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return KdeConnectConfig::instance()->deviceConfigDir(id()).absoluteFilePath("config");
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}
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void Device::requestPair()
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{
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switch(m_pairStatus) {
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case Device::Paired:
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Q_EMIT pairingFailed(i18n("Already paired"));
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return;
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case Device::Requested:
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Q_EMIT pairingFailed(i18n("Pairing already requested for this device"));
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return;
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case Device::RequestedByPeer:
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qCDebug(KDECONNECT_CORE) << "Pairing already started by the other end, accepting their request.";
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acceptPairing();
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return;
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case Device::NotPaired:
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;
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}
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if (!isReachable()) {
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Q_EMIT pairingFailed(i18n("Device not reachable"));
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return;
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}
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m_pairStatus = Device::Requested;
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//Send our own public key
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bool success = sendOwnPublicKey();
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if (!success) {
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m_pairStatus = Device::NotPaired;
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Q_EMIT pairingFailed(i18n("Error contacting device"));
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return;
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}
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if (m_pairStatus == Device::Paired) {
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return;
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}
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m_pairingTimeut.start();
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}
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void Device::unpair()
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{
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NetworkPackage np(PACKAGE_TYPE_PAIR);
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np.set("pair", false);
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sendPackage(np);
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unpairInternal();
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}
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void Device::unpairInternal()
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{
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bool alreadyUnpaired = (m_pairStatus != Device::Paired);
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m_pairStatus = Device::NotPaired;
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KdeConnectConfig::instance()->removeTrustedDevice(id());
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reloadPlugins(); //Will unload the plugins
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if (!alreadyUnpaired) {
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Q_EMIT pairingChanged(false);
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}
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}
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void Device::pairingTimeout()
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{
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NetworkPackage np(PACKAGE_TYPE_PAIR);
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np.set("pair", false);
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sendPackage(np);
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m_pairStatus = Device::NotPaired;
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Q_EMIT pairingFailed(i18n("Timed out"));
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}
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static bool lessThan(DeviceLink* p1, DeviceLink* p2)
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{
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return p1->provider()->priority() > p2->provider()->priority();
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}
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void Device::addLink(const NetworkPackage& identityPackage, DeviceLink* link)
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{
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//qCDebug(KDECONNECT_CORE) << "Adding link to" << id() << "via" << link->provider();
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m_protocolVersion = identityPackage.get<int>("protocolVersion");
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if (m_protocolVersion != NetworkPackage::ProtocolVersion) {
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qWarning() << m_deviceName << "- warning, device uses a different protocol version" << m_protocolVersion << "expected" << NetworkPackage::ProtocolVersion;
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}
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connect(link, SIGNAL(destroyed(QObject*)),
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this, SLOT(linkDestroyed(QObject*)));
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m_deviceLinks.append(link);
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//re-read the device name from the identityPackage because it could have changed
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setName(identityPackage.get<QString>("deviceName"));
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m_deviceType = str2type(identityPackage.get<QString>("deviceType"));
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//Theoretically we will never add two links from the same provider (the provider should destroy
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//the old one before this is called), so we do not have to worry about destroying old links.
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//-- Actually, we should not destroy them or the provider will store an invalid ref!
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connect(link, SIGNAL(receivedPackage(NetworkPackage)),
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this, SLOT(privateReceivedPackage(NetworkPackage)));
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qSort(m_deviceLinks.begin(), m_deviceLinks.end(), lessThan);
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if (m_deviceLinks.size() == 1) {
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reloadPlugins(); //Will load the plugins
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Q_EMIT reachableStatusChanged();
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} else {
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Q_FOREACH(KdeConnectPlugin* plugin, m_plugins) {
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plugin->connected();
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}
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}
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}
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void Device::linkDestroyed(QObject* o)
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{
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removeLink(static_cast<DeviceLink*>(o));
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}
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void Device::removeLink(DeviceLink* link)
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{
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m_deviceLinks.removeOne(link);
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//qCDebug(KDECONNECT_CORE) << "RemoveLink" << m_deviceLinks.size() << "links remaining";
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if (m_deviceLinks.isEmpty()) {
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reloadPlugins();
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Q_EMIT reachableStatusChanged();
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}
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}
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bool Device::sendPackage(NetworkPackage& np)
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{
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if (np.type() != PACKAGE_TYPE_PAIR && isPaired()) {
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Q_FOREACH(DeviceLink* dl, m_deviceLinks) {
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if (dl->sendPackageEncrypted(m_publicKey, np)) return true;
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}
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} else {
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//Maybe we could block here any package that is not an identity or a pairing package to prevent sending non encrypted data
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Q_FOREACH(DeviceLink* dl, m_deviceLinks) {
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if (dl->sendPackage(np)) return true;
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}
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}
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return false;
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}
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void Device::privateReceivedPackage(const NetworkPackage& np)
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{
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if (np.type() == PACKAGE_TYPE_PAIR) {
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//qCDebug(KDECONNECT_CORE) << "Pair package";
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bool wantsPair = np.get<bool>("pair");
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if (wantsPair == isPaired()) {
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qCDebug(KDECONNECT_CORE) << "Already" << (wantsPair? "paired":"unpaired");
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if (m_pairStatus == Device::Requested) {
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m_pairStatus = Device::NotPaired;
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m_pairingTimeut.stop();
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Q_EMIT pairingFailed(i18n("Canceled by other peer"));
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}
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return;
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}
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if (wantsPair) {
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//Retrieve their public key
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const QString& key = np.get<QString>("publicKey");
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m_publicKey = QCA::RSAPublicKey::fromPEM(key);
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if (m_publicKey.isNull()) {
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qCDebug(KDECONNECT_CORE) << "ERROR decoding key";
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if (m_pairStatus == Device::Requested) {
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m_pairStatus = Device::NotPaired;
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m_pairingTimeut.stop();
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}
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Q_EMIT pairingFailed(i18n("Received incorrect key"));
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return;
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}
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if (m_pairStatus == Device::Requested) { //We started pairing
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qCDebug(KDECONNECT_CORE) << "Pair answer";
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setAsPaired();
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} else {
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qCDebug(KDECONNECT_CORE) << "Pair request";
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Daemon::instance()->requestPairing(this);
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m_pairStatus = Device::RequestedByPeer;
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}
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} else {
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qCDebug(KDECONNECT_CORE) << "Unpair request";
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PairStatus prevPairStatus = m_pairStatus;
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m_pairStatus = Device::NotPaired;
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if (prevPairStatus == Device::Requested) {
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m_pairingTimeut.stop();
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Q_EMIT pairingFailed(i18n("Canceled by other peer"));
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} else if (prevPairStatus == Device::Paired) {
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unpairInternal();
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}
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}
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} else if (isPaired()) {
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QList<KdeConnectPlugin*> plugins = m_pluginsByIncomingInterface.values(np.type());
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foreach(KdeConnectPlugin* plugin, plugins) {
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plugin->receivePackage(np);
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}
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} else {
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qCDebug(KDECONNECT_CORE) << "device" << name() << "not paired, ignoring package" << np.type();
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if (m_pairStatus != Device::Requested)
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unpair();
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}
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}
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bool Device::sendOwnPublicKey()
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{
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NetworkPackage np(PACKAGE_TYPE_PAIR);
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np.set("pair", true);
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np.set("publicKey", KdeConnectConfig::instance()->publicKey().toPEM());
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bool success = sendPackage(np);
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return success;
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}
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void Device::rejectPairing()
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{
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qCDebug(KDECONNECT_CORE) << "Rejected pairing";
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m_pairStatus = Device::NotPaired;
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NetworkPackage np(PACKAGE_TYPE_PAIR);
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np.set("pair", false);
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sendPackage(np);
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Q_EMIT pairingFailed(i18n("Canceled by the user"));
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}
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void Device::acceptPairing()
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{
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if (m_pairStatus != Device::RequestedByPeer) return;
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qCDebug(KDECONNECT_CORE) << "Accepted pairing";
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bool success = sendOwnPublicKey();
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if (!success) {
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m_pairStatus = Device::NotPaired;
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return;
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}
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setAsPaired();
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}
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void Device::setAsPaired()
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{
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bool alreadyPaired = (m_pairStatus == Device::Paired);
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m_pairStatus = Device::Paired;
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m_pairingTimeut.stop(); //Just in case it was started
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//Save device info in the config
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KdeConnectConfig::instance()->addTrustedDevice(id(), name(), type2str(m_deviceType), m_publicKey.toPEM());
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reloadPlugins(); //Will actually load the plugins
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if (!alreadyPaired) {
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Q_EMIT pairingChanged(true);
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}
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}
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QStringList Device::availableLinks() const
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{
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QStringList sl;
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Q_FOREACH(DeviceLink* dl, m_deviceLinks) {
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sl.append(dl->provider()->name());
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}
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return sl;
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}
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Device::DeviceType Device::str2type(QString deviceType) {
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if (deviceType == "desktop") return Desktop;
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if (deviceType == "laptop") return Laptop;
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if (deviceType == "smartphone" || deviceType == "phone") return Phone;
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if (deviceType == "tablet") return Tablet;
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return Unknown;
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}
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QString Device::type2str(Device::DeviceType deviceType) {
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if (deviceType == Desktop) return "desktop";
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if (deviceType == Laptop) return "laptop";
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if (deviceType == Phone) return "smartphone";
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if (deviceType == Tablet) return "tablet";
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return "unknown";
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}
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QString Device::statusIconName() const
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{
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return iconForStatus(isReachable(), isPaired());
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}
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QString Device::iconName() const
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{
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return iconForStatus(true, false);
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}
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QString Device::iconForStatus(bool reachable, bool paired) const
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{
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Device::DeviceType deviceType = m_deviceType;
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if (deviceType == Device::Unknown) {
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deviceType = Device::Phone; //Assume phone if we don't know the type
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} else if (deviceType == Device::Desktop) {
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deviceType = Device::Device::Laptop; // We don't have desktop icon yet
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}
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QString status = (reachable? (paired? QStringLiteral("connected") : QStringLiteral("disconnected")) : QStringLiteral("trusted"));
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QString type = type2str(deviceType);
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return type+'-'+status;
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}
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void Device::setName(const QString &name)
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{
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if (m_deviceName != name) {
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m_deviceName = name;
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Q_EMIT nameChanged(name);
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}
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}
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