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/*
SPDX-FileCopyrightText: 1999 Martin R. Jones <mjones@kde.org>
SPDX-FileCopyrightText: 2011 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "interface.h"
#include "kscreenlocker_logging.h"
#include "kscreensaveradaptor.h"
#include "ksldapp.h"
#include "powerdevilpolicyagent.h"
#include "screensaveradaptor.h"
// KDE
#include <KAuthorized>
#include <KIdleTime>
#include <KWindowSystem>
// Qt
#include <QDBusConnection>
#include <QDBusContext>
#include <QDBusPendingCallWatcher>
#include <QDBusReply>
#include <QDBusServiceWatcher>
#include <QRandomGenerator>
namespace ScreenLocker
{
const uint ChangeScreenSettings = 4;
PowerInhibitor::PowerInhibitor(const QString &applicationName, const QString &reason)
{
inhibit(applicationName, reason);
}
PowerInhibitor::~PowerInhibitor()
{
}
void PowerInhibitor::release()
{
m_released = true;
if (m_cookie.has_value()) {
uninhibit();
}
}
void PowerInhibitor::inhibit(const QString &applicationName, const QString &reason)
{
OrgKdeSolidPowerManagementPolicyAgentInterface policyAgent(QStringLiteral("org.kde.Solid.PowerManagement.PolicyAgent"),
QStringLiteral("/org/kde/Solid/PowerManagement/PolicyAgent"),
QDBusConnection::sessionBus());
QDBusPendingReply<uint> reply = policyAgent.AddInhibition(ChangeScreenSettings, applicationName, reason);
auto watcher = new QDBusPendingCallWatcher(reply, this);
connect(watcher, &QDBusPendingCallWatcher::finished, this, [this, watcher]() {
QDBusPendingReply<uint> reply = *watcher;
watcher->deleteLater();
if (!reply.isValid()) {
qCWarning(KSCREENLOCKER) << "org.kde.Solid.PowerManagement.PolicyAgent.AddInhibition failed:" << reply.error();
m_cookie = std::unexpected(reply.error());
} else {
m_cookie = reply.value();
}
if (m_released) {
uninhibit();
}
});
}
void PowerInhibitor::uninhibit()
{
if (const auto &result = m_cookie.value()) {
OrgKdeSolidPowerManagementPolicyAgentInterface policyAgent(QStringLiteral("org.kde.Solid.PowerManagement.PolicyAgent"),
QStringLiteral("/org/kde/Solid/PowerManagement/PolicyAgent"),
QDBusConnection::sessionBus());
policyAgent.ReleaseInhibition(result.value());
}
deleteLater();
}
Interface::Interface(KSldApp *parent)
: QObject(parent)
, m_daemon(parent)
, m_serviceWatcher(new QDBusServiceWatcher(this))
, m_next_cookie(0)
{
(void)new ScreenSaverAdaptor(this);
QDBusConnection::sessionBus().registerService(QStringLiteral("org.freedesktop.ScreenSaver"));
(void)new KScreenSaverAdaptor(this);
QDBusConnection::sessionBus().registerService(QStringLiteral("org.kde.screensaver"));
QDBusConnection::sessionBus().registerObject(QStringLiteral("/ScreenSaver"), this);
QDBusConnection::sessionBus().registerObject(QStringLiteral("/org/freedesktop/ScreenSaver"), this);
connect(m_daemon, &KSldApp::locked, this, &Interface::slotLocked);
connect(m_daemon, &KSldApp::unlocked, this, &Interface::slotUnlocked);
connect(m_daemon, &KSldApp::aboutToLock, this, &Interface::AboutToLock);
m_serviceWatcher->setConnection(QDBusConnection::sessionBus());
m_serviceWatcher->setWatchMode(QDBusServiceWatcher::WatchForUnregistration);
connect(m_serviceWatcher, &QDBusServiceWatcher::serviceUnregistered, this, &Interface::serviceUnregistered);
// I make it a really random number to avoid
// some assumptions in clients, but just increase
// while gnome-ss creates a random number every time
m_next_cookie = QRandomGenerator::global()->bounded(19999);
}
Interface::~Interface()
{
}
bool Interface::GetActive()
{
return m_daemon->lockState() == KSldApp::Locked;
}
uint Interface::GetActiveTime()
{
return m_daemon->activeTime();
}
uint Interface::GetSessionIdleTime()
{
if (KWindowSystem::isPlatformWayland()) {
QDBusContext::sendErrorReply(QDBusError::NotSupported, QStringLiteral("GetSessionIdleTime is not supported on this platform"));
return 0;
}
return KIdleTime::instance()->idleTime();
}
void Interface::Lock()
{
if (!KAuthorized::authorizeAction(QStringLiteral("lock_screen"))) {
return;
}
m_daemon->lock(calledFromDBus() ? EstablishLock::Immediate : EstablishLock::Delayed);
if (calledFromDBus() && m_daemon->lockState() == KSldApp::AcquiringLock) {
m_lockReplies << message().createReply();
setDelayedReply(true);
}
}
void Interface::SwitchUser()
{
if (!KAuthorized::authorizeAction(QStringLiteral("lock_screen"))) {
return;
}
m_daemon->lock(EstablishLock::DefaultToSwitchUser);
if (calledFromDBus() && m_daemon->lockState() == KSldApp::AcquiringLock) {
m_lockReplies << message().createReply();
setDelayedReply(true);
}
}
bool Interface::SetActive(bool state)
{
// TODO: what should the return value be?
if (state) {
Lock();
return true;
}
// set inactive is ignored
return false;
}
uint Interface::Inhibit(const QString &application_name, const QString &reason_for_inhibit)
{
InhibitRequest sr;
sr.cookie = m_next_cookie++;
sr.dbusid = message().service();
sr.powerInhibitor = new PowerInhibitor(application_name, reason_for_inhibit);
m_requests.append(sr);
m_serviceWatcher->addWatchedService(sr.dbusid);
KSldApp::self()->inhibit();
return sr.cookie;
}
void Interface::UnInhibit(uint cookie)
{
QMutableListIterator<InhibitRequest> it(m_requests);
while (it.hasNext()) {
if (it.next().cookie == cookie) {
it.value().powerInhibitor->release();
it.remove();
KSldApp::self()->uninhibit();
break;
}
}
}
void Interface::serviceUnregistered(const QString &name)
{
m_serviceWatcher->removeWatchedService(name);
QListIterator<InhibitRequest> it(m_requests);
while (it.hasNext()) {
const InhibitRequest &r = it.next();
if (r.dbusid == name) {
UnInhibit(r.cookie);
}
}
}
void Interface::SimulateUserActivity()
{
KIdleTime::instance()->simulateUserActivity();
}
uint Interface::Throttle(const QString &application_name, const QString &reason_for_inhibit)
{
Q_UNUSED(application_name)
Q_UNUSED(reason_for_inhibit)
// TODO: implement me
return 0;
}
void Interface::UnThrottle(uint cookie)
{
Q_UNUSED(cookie)
// TODO: implement me
}
void Interface::slotLocked()
{
sendLockReplies();
Q_EMIT ActiveChanged(true);
}
void Interface::slotUnlocked()
{
sendLockReplies();
Q_EMIT ActiveChanged(false);
}
void Interface::configure()
{
m_daemon->configure();
}
void Interface::sendLockReplies()
{
for (const QDBusMessage &reply : std::as_const(m_lockReplies)) {
QDBusConnection::sessionBus().send(reply);
}
m_lockReplies.clear();
}
} // namespace
#include "moc_interface.cpp"
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