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kwin/wayland_server.cpp
Vlad Zahorodnii 19ad172584 Survive Xwayland crashes 
If the Xwayland process crashes, it will bring down the entire session
together with itself. Obviously, we don't want that. At least, Wayland
clients should survive the crash.

This change refactors relevant X11 parts to handle Xwayland crashes in a
less fatal way.

In order to handle Xwayland crashes better, a pair of start() and stop()
methods had been introduced in the Xwayland class to allow starting and
stopping the Xwayland process at any moment.

If we detect that the Xwayland process has crashed, we will immediately
stop the Xwayland server, which in its turn will deactivate the socket
notifier and destroy all connected X11 clients. Unfortunately, a couple
of subtle changes in X11Client::releaseWindow() and Unmanaged::release()
had to be made to ensure that we are left with a valid state after the
Xwayland server has been stopped.
2020-08-05 08:48:00 +00:00

847 lines
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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
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) any later version.
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 "wayland_server.h"
#include "x11client.h"
#include "platform.h"
#include "composite.h"
#include "idle_inhibition.h"
#include "screens.h"
#include "waylandxdgshellintegration.h"
#include "workspace.h"
#include "xdgshellclient.h"
#include "service_utils.h"
// Client
#include <KWayland/Client/connection_thread.h>
#include <KWayland/Client/event_queue.h>
#include <KWayland/Client/registry.h>
#include <KWayland/Client/compositor.h>
#include <KWayland/Client/seat.h>
#include <KWayland/Client/datadevicemanager.h>
#include <KWayland/Client/surface.h>
// Server
#include <KWaylandServer/appmenu_interface.h>
#include <KWaylandServer/compositor_interface.h>
#include <KWaylandServer/datadevicemanager_interface.h>
#include <KWaylandServer/datasource_interface.h>
#include <KWaylandServer/display.h>
#include <KWaylandServer/dpms_interface.h>
#include <KWaylandServer/idle_interface.h>
#include <KWaylandServer/idleinhibit_v1_interface.h>
#include <KWaylandServer/linuxdmabuf_v1_interface.h>
#include <KWaylandServer/output_interface.h>
#include <KWaylandServer/plasmashell_interface.h>
#include <KWaylandServer/plasmavirtualdesktop_interface.h>
#include <KWaylandServer/plasmawindowmanagement_interface.h>
#include <KWaylandServer/pointerconstraints_interface.h>
#include <KWaylandServer/pointergestures_interface.h>
#include <KWaylandServer/seat_interface.h>
#include <KWaylandServer/server_decoration_interface.h>
#include <KWaylandServer/server_decoration_palette_interface.h>
#include <KWaylandServer/shadow_interface.h>
#include <KWaylandServer/subcompositor_interface.h>
#include <KWaylandServer/blur_interface.h>
#include <KWaylandServer/outputmanagement_interface.h>
#include <KWaylandServer/outputconfiguration_interface.h>
#include <KWaylandServer/xdgdecoration_v1_interface.h>
#include <KWaylandServer/xdgshell_interface.h>
#include <KWaylandServer/xdgforeign_v2_interface.h>
#include <KWaylandServer/xdgoutput_interface.h>
#include <KWaylandServer/keystate_interface.h>
#include <KWaylandServer/filtered_display.h>
#include <KWaylandServer/keyboard_shortcuts_inhibit_v1_interface.h>
// Qt
#include <QCryptographicHash>
#include <QDir>
#include <QFileInfo>
#include <QThread>
#include <QWindow>
// system
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
//screenlocker
#include <KScreenLocker/KsldApp>
using namespace KWaylandServer;
namespace KWin
{
KWIN_SINGLETON_FACTORY(WaylandServer)
WaylandServer::WaylandServer(QObject *parent)
: QObject(parent)
{
qRegisterMetaType<KWaylandServer::OutputInterface::DpmsMode>();
}
WaylandServer::~WaylandServer()
{
destroyInputMethodConnection();
}
KWaylandServer::ClientConnection *WaylandServer::xWaylandConnection() const
{
return m_xwaylandConnection;
}
void WaylandServer::destroyInternalConnection()
{
emit terminatingInternalClientConnection();
if (m_internalConnection.client) {
// delete all connections hold by plugins like e.g. widget style
const auto connections = KWayland::Client::ConnectionThread::connections();
for (auto c : connections) {
if (c == m_internalConnection.client) {
continue;
}
emit c->connectionDied();
}
delete m_internalConnection.registry;
delete m_internalConnection.compositor;
delete m_internalConnection.seat;
delete m_internalConnection.ddm;
dispatch();
m_internalConnection.client->deleteLater();
m_internalConnection.clientThread->quit();
m_internalConnection.clientThread->wait();
delete m_internalConnection.clientThread;
m_internalConnection.client = nullptr;
m_internalConnection.server->destroy();
m_internalConnection.server = nullptr;
}
}
void WaylandServer::terminateClientConnections()
{
destroyInternalConnection();
destroyInputMethodConnection();
if (m_display) {
const auto connections = m_display->connections();
for (auto it = connections.begin(); it != connections.end(); ++it) {
(*it)->destroy();
}
}
}
void WaylandServer::registerShellClient(AbstractClient *client)
{
if (client->readyForPainting()) {
emit shellClientAdded(client);
} else {
connect(client, &AbstractClient::windowShown, this, &WaylandServer::shellClientShown);
}
m_clients << client;
}
void WaylandServer::registerXdgToplevelClient(XdgToplevelClient *client)
{
// TODO: Find a better way and more generic to install extensions.
SurfaceInterface *surface = client->surface();
if (surface->client() == m_screenLockerClientConnection) {
ScreenLocker::KSldApp::self()->lockScreenShown();
}
registerShellClient(client);
auto it = std::find_if(m_plasmaShellSurfaces.begin(), m_plasmaShellSurfaces.end(),
[surface] (PlasmaShellSurfaceInterface *plasmaSurface) {
return plasmaSurface->surface() == surface;
}
);
if (it != m_plasmaShellSurfaces.end()) {
client->installPlasmaShellSurface(*it);
m_plasmaShellSurfaces.erase(it);
}
if (auto decoration = ServerSideDecorationInterface::get(surface)) {
client->installServerDecoration(decoration);
}
if (auto decoration = XdgToplevelDecorationV1Interface::get(client->shellSurface())) {
client->installXdgDecoration(decoration);
}
if (auto menu = m_appMenuManager->appMenuForSurface(surface)) {
client->installAppMenu(menu);
}
if (auto palette = m_paletteManager->paletteForSurface(surface)) {
client->installPalette(palette);
}
connect(m_XdgForeign, &XdgForeignV2Interface::transientChanged, client, [this](SurfaceInterface *child) {
emit foreignTransientChanged(child);
});
}
void WaylandServer::registerXdgGenericClient(AbstractClient *client)
{
XdgToplevelClient *toplevelClient = qobject_cast<XdgToplevelClient *>(client);
if (toplevelClient) {
registerXdgToplevelClient(toplevelClient);
return;
}
XdgPopupClient *popupClient = qobject_cast<XdgPopupClient *>(client);
if (popupClient) {
registerShellClient(popupClient);
return;
}
qCDebug(KWIN_CORE) << "Received invalid xdg client:" << client->surface();
}
class KWinDisplay : public KWaylandServer::FilteredDisplay
{
public:
KWinDisplay(QObject *parent)
: KWaylandServer::FilteredDisplay(parent)
{}
static QByteArray sha256(const QString &fileName)
{
QFile f(fileName);
if (f.open(QFile::ReadOnly)) {
QCryptographicHash hash(QCryptographicHash::Sha256);
if (hash.addData(&f)) {
return hash.result();
}
}
return QByteArray();
}
bool isTrustedOrigin(KWaylandServer::ClientConnection *client) const {
const auto fullPathSha = sha256(client->executablePath());
const auto localSha = sha256(QLatin1String("/proc/") + QString::number(client->processId()) + QLatin1String("/exe"));
const bool trusted = !localSha.isEmpty() && fullPathSha == localSha;
if (!trusted) {
qCWarning(KWIN_CORE) << "Could not trust" << client->executablePath() << "sha" << localSha << fullPathSha;
}
return trusted;
}
QStringList fetchRequestedInterfaces(KWaylandServer::ClientConnection *client) const {
return KWin::fetchRequestedInterfaces(client->executablePath());
}
const QSet<QByteArray> interfacesBlackList = {"org_kde_kwin_remote_access_manager", "org_kde_plasma_window_management", "org_kde_kwin_fake_input", "org_kde_kwin_keystate", "zkde_screencast_unstable_v1"};
QSet<QString> m_reported;
bool allowInterface(KWaylandServer::ClientConnection *client, const QByteArray &interfaceName) override {
if (client->processId() == getpid()) {
return true;
}
if (!interfacesBlackList.contains(interfaceName)) {
return true;
}
if (client->executablePath().isEmpty()) {
qCWarning(KWIN_CORE) << "Could not identify process with pid" << client->processId();
return false;
}
{
auto requestedInterfaces = client->property("requestedInterfaces");
if (requestedInterfaces.isNull()) {
requestedInterfaces = fetchRequestedInterfaces(client);
client->setProperty("requestedInterfaces", requestedInterfaces);
}
if (!requestedInterfaces.toStringList().contains(QString::fromUtf8(interfaceName))) {
if (KWIN_CORE().isDebugEnabled()) {
const QString id = client->executablePath() + QLatin1Char('|') + QString::fromUtf8(interfaceName);
if (!m_reported.contains({id})) {
m_reported.insert(id);
qCDebug(KWIN_CORE) << "Interface" << interfaceName << "not in X-KDE-Wayland-Interfaces of" << client->executablePath();
}
}
return false;
}
}
{
auto trustedOrigin = client->property("isPrivileged");
if (trustedOrigin.isNull()) {
trustedOrigin = isTrustedOrigin(client);
client->setProperty("isPrivileged", trustedOrigin);
}
if (!trustedOrigin.toBool()) {
return false;
}
}
qCDebug(KWIN_CORE) << "authorized" << client->executablePath() << interfaceName;
return true;
}
};
bool WaylandServer::start()
{
return m_display->start();
}
bool WaylandServer::init(const QByteArray &socketName, InitializationFlags flags)
{
m_initFlags = flags;
m_display = new KWinDisplay(this);
if (!socketName.isNull() && !socketName.isEmpty()) {
m_display->setSocketName(QString::fromUtf8(socketName));
} else {
m_display->setAutomaticSocketNaming(true);
}
m_compositor = m_display->createCompositor(m_display);
connect(m_compositor, &CompositorInterface::surfaceCreated, this,
[this] (SurfaceInterface *surface) {
// check whether we have a Toplevel with the Surface's id
Workspace *ws = Workspace::self();
if (!ws) {
// it's possible that a Surface gets created before Workspace is created
return;
}
if (surface->client() != xWaylandConnection()) {
// setting surface is only relevat for Xwayland clients
return;
}
auto check = [surface] (const Toplevel *t) {
return t->surfaceId() == surface->id();
};
if (Toplevel *t = ws->findToplevel(check)) {
t->setSurface(surface);
}
}
);
m_tabletManager = m_display->createTabletManagerInterface(m_display);
m_keyboardShortcutsInhibitManager = m_display->createKeyboardShortcutsInhibitManagerV1(m_display);
auto shellIntegration = new WaylandXdgShellIntegration(this);
connect(shellIntegration, &WaylandXdgShellIntegration::clientCreated,
this, &WaylandServer::registerXdgGenericClient);
m_xdgDecorationManagerV1 = m_display->createXdgDecorationManagerV1(m_display);
connect(m_xdgDecorationManagerV1, &XdgDecorationManagerV1Interface::decorationCreated, this,
[this](XdgToplevelDecorationV1Interface *decoration) {
if (XdgToplevelClient *toplevel = findXdgToplevelClient(decoration->toplevel()->surface())) {
toplevel->installXdgDecoration(decoration);
}
}
);
m_display->createViewporter();
m_display->createShm();
m_seat = m_display->createSeat(m_display);
m_seat->create();
m_display->createPointerGestures(PointerGesturesInterfaceVersion::UnstableV1, m_display)->create();
m_display->createPointerConstraints(PointerConstraintsInterfaceVersion::UnstableV1, m_display)->create();
m_dataDeviceManager = m_display->createDataDeviceManager(m_display);
m_dataDeviceManager->create();
m_display->createDataControlDeviceManagerV1(m_display);
m_display->createPrimarySelectionDeviceManagerV1(m_display);
m_idle = m_display->createIdle(m_display);
auto idleInhibition = new IdleInhibition(m_idle);
connect(this, &WaylandServer::shellClientAdded, idleInhibition, &IdleInhibition::registerClient);
m_display->createIdleInhibitManagerV1(m_display);
m_plasmaShell = m_display->createPlasmaShell(m_display);
m_plasmaShell->create();
connect(m_plasmaShell, &PlasmaShellInterface::surfaceCreated,
[this] (PlasmaShellSurfaceInterface *surface) {
if (XdgToplevelClient *client = findXdgToplevelClient(surface->surface())) {
client->installPlasmaShellSurface(surface);
return;
}
m_plasmaShellSurfaces.append(surface);
connect(surface, &QObject::destroyed, this, [this, surface] {
m_plasmaShellSurfaces.removeOne(surface);
});
}
);
m_appMenuManager = m_display->createAppMenuManagerInterface(m_display);
connect(m_appMenuManager, &AppMenuManagerInterface::appMenuCreated,
[this] (AppMenuInterface *appMenu) {
if (XdgToplevelClient *client = findXdgToplevelClient(appMenu->surface())) {
client->installAppMenu(appMenu);
}
}
);
m_paletteManager = m_display->createServerSideDecorationPaletteManager(m_display);
connect(m_paletteManager, &ServerSideDecorationPaletteManagerInterface::paletteCreated,
[this] (ServerSideDecorationPaletteInterface *palette) {
if (XdgToplevelClient *client = findXdgToplevelClient(palette->surface())) {
client->installPalette(palette);
}
}
);
m_windowManagement = m_display->createPlasmaWindowManagement(m_display);
m_windowManagement->create();
m_windowManagement->setShowingDesktopState(PlasmaWindowManagementInterface::ShowingDesktopState::Disabled);
connect(m_windowManagement, &PlasmaWindowManagementInterface::requestChangeShowingDesktop, this,
[] (PlasmaWindowManagementInterface::ShowingDesktopState state) {
if (!workspace()) {
return;
}
bool set = false;
switch (state) {
case PlasmaWindowManagementInterface::ShowingDesktopState::Disabled:
set = false;
break;
case PlasmaWindowManagementInterface::ShowingDesktopState::Enabled:
set = true;
break;
default:
Q_UNREACHABLE();
break;
}
if (set == workspace()->showingDesktop()) {
return;
}
workspace()->setShowingDesktop(set);
}
);
m_virtualDesktopManagement = m_display->createPlasmaVirtualDesktopManagement(m_display);
m_windowManagement->setPlasmaVirtualDesktopManagementInterface(m_virtualDesktopManagement);
m_display->createShadowManager(m_display);
m_display->createDpmsManager(m_display);
m_decorationManager = m_display->createServerSideDecorationManager(m_display);
connect(m_decorationManager, &ServerSideDecorationManagerInterface::decorationCreated, this,
[this] (ServerSideDecorationInterface *decoration) {
if (XdgToplevelClient *client = findXdgToplevelClient(decoration->surface())) {
client->installServerDecoration(decoration);
}
connect(decoration, &ServerSideDecorationInterface::modeRequested, this,
[decoration] (ServerSideDecorationManagerInterface::Mode mode) {
// always acknowledge the requested mode
decoration->setMode(mode);
}
);
}
);
m_outputManagement = m_display->createOutputManagement(m_display);
connect(m_outputManagement, &OutputManagementInterface::configurationChangeRequested,
this, [](KWaylandServer::OutputConfigurationInterface *config) {
kwinApp()->platform()->requestOutputsChange(config);
});
m_outputManagement->create();
m_xdgOutputManager = m_display->createXdgOutputManager(m_display);
m_xdgOutputManager->create();
m_display->createSubCompositor(m_display)->create();
m_XdgForeign = m_display->createXdgForeignV2Interface(m_display);
m_keyState = m_display->createKeyStateInterface(m_display);
m_keyState->create();
return true;
}
KWaylandServer::LinuxDmabufUnstableV1Interface *WaylandServer::linuxDmabuf()
{
if (!m_linuxDmabuf) {
m_linuxDmabuf = m_display->createLinuxDmabufInterface(m_display);
m_linuxDmabuf->create();
}
return m_linuxDmabuf;
}
SurfaceInterface *WaylandServer::findForeignTransientForSurface(SurfaceInterface *surface)
{
return m_XdgForeign->transientFor(surface);
}
void WaylandServer::shellClientShown(Toplevel *toplevel)
{
AbstractClient *client = qobject_cast<AbstractClient *>(toplevel);
if (!client) {
qCWarning(KWIN_CORE) << "Failed to cast a Toplevel which is supposed to be an AbstractClient to AbstractClient";
return;
}
disconnect(client, &AbstractClient::windowShown, this, &WaylandServer::shellClientShown);
emit shellClientAdded(client);
}
void WaylandServer::initWorkspace()
{
VirtualDesktopManager::self()->setVirtualDesktopManagement(m_virtualDesktopManagement);
if (m_windowManagement) {
connect(workspace(), &Workspace::showingDesktopChanged, this,
[this] (bool set) {
using namespace KWaylandServer;
m_windowManagement->setShowingDesktopState(set ?
PlasmaWindowManagementInterface::ShowingDesktopState::Enabled :
PlasmaWindowManagementInterface::ShowingDesktopState::Disabled
);
}
);
connect(workspace(), &Workspace::workspaceInitialized, this, [this] {
auto f = [this] () {
QVector<quint32> ids;
for (Toplevel *toplevel : workspace()->stackingOrder()) {
auto *client = qobject_cast<AbstractClient *>(toplevel);
if (client && client->windowManagementInterface()) {
ids << client->windowManagementInterface()->internalId();
}
}
m_windowManagement->setStackingOrder(ids);
};
f();
connect(workspace(), &Workspace::stackingOrderChanged, this, f);
});
}
if (hasScreenLockerIntegration()) {
if (m_internalConnection.interfacesAnnounced) {
initScreenLocker();
} else {
connect(m_internalConnection.registry, &KWayland::Client::Registry::interfacesAnnounced, this, &WaylandServer::initScreenLocker);
}
} else {
emit initialized();
}
}
void WaylandServer::initScreenLocker()
{
auto *screenLockerApp = ScreenLocker::KSldApp::self();
ScreenLocker::KSldApp::self()->setGreeterEnvironment(kwinApp()->processStartupEnvironment());
ScreenLocker::KSldApp::self()->initialize();
connect(ScreenLocker::KSldApp::self(), &ScreenLocker::KSldApp::aboutToLock, this,
[this, screenLockerApp] () {
if (m_screenLockerClientConnection) {
// Already sent data to KScreenLocker.
return;
}
int clientFd = createScreenLockerConnection();
if (clientFd < 0) {
return;
}
ScreenLocker::KSldApp::self()->setWaylandFd(clientFd);
for (auto *seat : m_display->seats()) {
connect(seat, &KWaylandServer::SeatInterface::timestampChanged,
screenLockerApp, &ScreenLocker::KSldApp::userActivity);
}
}
);
connect(ScreenLocker::KSldApp::self(), &ScreenLocker::KSldApp::unlocked, this,
[this, screenLockerApp] () {
if (m_screenLockerClientConnection) {
m_screenLockerClientConnection->destroy();
delete m_screenLockerClientConnection;
m_screenLockerClientConnection = nullptr;
}
for (auto *seat : m_display->seats()) {
disconnect(seat, &KWaylandServer::SeatInterface::timestampChanged,
screenLockerApp, &ScreenLocker::KSldApp::userActivity);
}
ScreenLocker::KSldApp::self()->setWaylandFd(-1);
}
);
if (m_initFlags.testFlag(InitializationFlag::LockScreen)) {
ScreenLocker::KSldApp::self()->lock(ScreenLocker::EstablishLock::Immediate);
}
emit initialized();
}
WaylandServer::SocketPairConnection WaylandServer::createConnection()
{
SocketPairConnection ret;
int sx[2];
if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sx) < 0) {
qCWarning(KWIN_CORE) << "Could not create socket";
return ret;
}
ret.connection = m_display->createClient(sx[0]);
ret.fd = sx[1];
return ret;
}
int WaylandServer::createScreenLockerConnection()
{
const auto socket = createConnection();
if (!socket.connection) {
return -1;
}
m_screenLockerClientConnection = socket.connection;
connect(m_screenLockerClientConnection, &KWaylandServer::ClientConnection::disconnected,
this, [this] { m_screenLockerClientConnection = nullptr; });
return socket.fd;
}
int WaylandServer::createXWaylandConnection()
{
const auto socket = createConnection();
if (!socket.connection) {
return -1;
}
m_xwaylandConnection = socket.connection;
return socket.fd;
}
void WaylandServer::destroyXWaylandConnection()
{
if (!m_xwaylandConnection) {
return;
}
m_xwaylandConnection->destroy();
m_xwaylandConnection = nullptr;
}
int WaylandServer::createInputMethodConnection()
{
const auto socket = createConnection();
if (!socket.connection) {
return -1;
}
m_inputMethodServerConnection = socket.connection;
return socket.fd;
}
void WaylandServer::destroyInputMethodConnection()
{
if (!m_inputMethodServerConnection) {
return;
}
m_inputMethodServerConnection->destroy();
m_inputMethodServerConnection = nullptr;
}
void WaylandServer::createInternalConnection()
{
const auto socket = createConnection();
if (!socket.connection) {
return;
}
m_internalConnection.server = socket.connection;
using namespace KWayland::Client;
m_internalConnection.client = new ConnectionThread();
m_internalConnection.client->setSocketFd(socket.fd);
m_internalConnection.clientThread = new QThread;
m_internalConnection.client->moveToThread(m_internalConnection.clientThread);
m_internalConnection.clientThread->start();
connect(m_internalConnection.client, &ConnectionThread::connected, this,
[this] {
Registry *registry = new Registry(this);
EventQueue *eventQueue = new EventQueue(registry);
eventQueue->setup(m_internalConnection.client);
registry->setEventQueue(eventQueue);
registry->create(m_internalConnection.client);
m_internalConnection.registry = registry;
connect(registry, &Registry::interfacesAnnounced, this,
[this, registry] {
m_internalConnection.interfacesAnnounced = true;
const auto compInterface = registry->interface(Registry::Interface::Compositor);
if (compInterface.name != 0) {
m_internalConnection.compositor = registry->createCompositor(compInterface.name, compInterface.version, this);
}
const auto seatInterface = registry->interface(Registry::Interface::Seat);
if (seatInterface.name != 0) {
m_internalConnection.seat = registry->createSeat(seatInterface.name, seatInterface.version, this);
}
const auto ddmInterface = registry->interface(Registry::Interface::DataDeviceManager);
if (ddmInterface.name != 0) {
m_internalConnection.ddm = registry->createDataDeviceManager(ddmInterface.name, ddmInterface.version, this);
}
}
);
registry->setup();
}
);
m_internalConnection.client->initConnection();
}
void WaylandServer::removeClient(AbstractClient *c)
{
m_clients.removeAll(c);
emit shellClientRemoved(c);
}
void WaylandServer::dispatch()
{
if (!m_display) {
return;
}
if (m_internalConnection.server) {
m_internalConnection.server->flush();
}
m_display->dispatchEvents(0);
}
static AbstractClient *findClientInList(const QList<AbstractClient *> &clients, quint32 id)
{
auto it = std::find_if(clients.begin(), clients.end(),
[id] (AbstractClient *c) {
return c->windowId() == id;
}
);
if (it == clients.end()) {
return nullptr;
}
return *it;
}
static AbstractClient *findClientInList(const QList<AbstractClient *> &clients, KWaylandServer::SurfaceInterface *surface)
{
auto it = std::find_if(clients.begin(), clients.end(),
[surface] (AbstractClient *c) {
return c->surface() == surface;
}
);
if (it == clients.end()) {
return nullptr;
}
return *it;
}
AbstractClient *WaylandServer::findClient(quint32 id) const
{
if (id == 0) {
return nullptr;
}
if (AbstractClient *c = findClientInList(m_clients, id)) {
return c;
}
return nullptr;
}
AbstractClient *WaylandServer::findClient(SurfaceInterface *surface) const
{
if (!surface) {
return nullptr;
}
if (AbstractClient *c = findClientInList(m_clients, surface)) {
return c;
}
return nullptr;
}
XdgToplevelClient *WaylandServer::findXdgToplevelClient(SurfaceInterface *surface) const
{
return qobject_cast<XdgToplevelClient *>(findClient(surface));
}
quint32 WaylandServer::createWindowId(SurfaceInterface *surface)
{
auto it = m_clientIds.constFind(surface->client());
quint16 clientId = 0;
if (it != m_clientIds.constEnd()) {
clientId = it.value();
} else {
clientId = createClientId(surface->client());
}
Q_ASSERT(clientId != 0);
quint32 id = clientId;
// TODO: this does not prevent that two surfaces of same client get same id
id = (id << 16) | (surface->id() & 0xFFFF);
if (findClient(id)) {
qCWarning(KWIN_CORE) << "Invalid client windowId generated:" << id;
return 0;
}
return id;
}
quint16 WaylandServer::createClientId(ClientConnection *c)
{
const QSet<unsigned short> ids(m_clientIds.constBegin(), m_clientIds.constEnd());
quint16 id = 1;
if (!ids.isEmpty()) {
for (quint16 i = ids.count() + 1; i >= 1 ; i--) {
if (!ids.contains(i)) {
id = i;
break;
}
}
}
Q_ASSERT(!ids.contains(id));
m_clientIds.insert(c, id);
connect(c, &ClientConnection::disconnected, this,
[this] (ClientConnection *c) {
m_clientIds.remove(c);
}
);
return id;
}
bool WaylandServer::isScreenLocked() const
{
if (!hasScreenLockerIntegration()) {
return false;
}
return ScreenLocker::KSldApp::self()->lockState() == ScreenLocker::KSldApp::Locked ||
ScreenLocker::KSldApp::self()->lockState() == ScreenLocker::KSldApp::AcquiringLock;
}
bool WaylandServer::hasScreenLockerIntegration() const
{
return !m_initFlags.testFlag(InitializationFlag::NoLockScreenIntegration);
}
bool WaylandServer::hasGlobalShortcutSupport() const
{
return !m_initFlags.testFlag(InitializationFlag::NoGlobalShortcuts);
}
void WaylandServer::simulateUserActivity()
{
if (m_idle) {
m_idle->simulateUserActivity();
}
}
void WaylandServer::updateKeyState(KWin::Xkb::LEDs leds)
{
if (!m_keyState)
return;
m_keyState->setState(KeyStateInterface::Key::CapsLock, leds & KWin::Xkb::LED::CapsLock ? KeyStateInterface::State::Locked : KeyStateInterface::State::Unlocked);
m_keyState->setState(KeyStateInterface::Key::NumLock, leds & KWin::Xkb::LED::NumLock ? KeyStateInterface::State::Locked : KeyStateInterface::State::Unlocked);
m_keyState->setState(KeyStateInterface::Key::ScrollLock, leds & KWin::Xkb::LED::ScrollLock ? KeyStateInterface::State::Locked : KeyStateInterface::State::Unlocked);
}
bool WaylandServer::isKeyboardShortcutsInhibited() const
{
auto surface = seat()->focusedKeyboardSurface();
if (surface) {
auto inhibitor = keyboardShortcutsInhibitManager()->findInhibitor(surface, seat());
return inhibitor && inhibitor->isActive();
}
return false;
}
}
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