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liblxqt-packaging/lxqtpower/lxqtpowerproviders.cpp

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://razor-qt.org
*
* Copyright: 2010-2011 Razor team
* Authors:
* Alexander Sokoloff <sokoloff.a@gmail.com>
* Petr Vanek <petr@scribus.info>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "lxqtpowerproviders.h"
#include <QDBusInterface>
#include <QProcess>
#include <QDebug>
#include "lxqtnotification.h"
#include <signal.h> // for kill()
#define UPOWER_SERVICE "org.freedesktop.UPower"
#define UPOWER_PATH "/org/freedesktop/UPower"
#define UPOWER_INTERFACE UPOWER_SERVICE
#define CONSOLEKIT_SERVICE "org.freedesktop.ConsoleKit"
#define CONSOLEKIT_PATH "/org/freedesktop/ConsoleKit/Manager"
#define CONSOLEKIT_INTERFACE "org.freedesktop.ConsoleKit.Manager"
#define SYSTEMD_SERVICE "org.freedesktop.login1"
#define SYSTEMD_PATH "/org/freedesktop/login1"
#define SYSTEMD_INTERFACE "org.freedesktop.login1.Manager"
#define LXQT_SERVICE "org.lxqt.session"
#define LXQT_PATH "/LxQtSession"
#define LXQT_INTERFACE "org.lxqt.session"
#define LXSESSION_SERVICE "org.lxde.SessionManager"
#define LXSESSION_PATH "/org/lxde/SessionManager"
#define LXSESSION_INTERFACE "org.lxde.SessionManager"
#define PROPERTIES_INTERFACE "org.freedesktop.DBus.Properties"
using namespace LxQt;
/************************************************
Helper func
************************************************/
void printDBusMsg(const QDBusMessage &msg)
{
qWarning() << "** Dbus error **************************";
qWarning() << "Error name " << msg.errorName();
qWarning() << "Error msg " << msg.errorMessage();
qWarning() << "****************************************";
}
/************************************************
Helper func
************************************************/
static bool dbusCall(const QString &service,
const QString &path,
const QString &interface,
const QDBusConnection &connection,
const QString & method,
PowerProvider::DbusErrorCheck errorCheck = PowerProvider::CheckDBUS
)
{
QDBusInterface dbus(service, path, interface, connection);
if (!dbus.isValid())
{
qWarning() << "dbusCall: QDBusInterface is invalid" << service << path << interface << method;
if (errorCheck == PowerProvider::CheckDBUS)
{
Notification::notify(
QObject::tr("Power Manager Error"),
QObject::tr("QDBusInterface is invalid")+ "\n\n" + service + " " + path + " " + interface + " " + method,
"lxqt-logo.png");
}
return false;
}
QDBusMessage msg = dbus.call(method);
if (!msg.errorName().isEmpty())
{
printDBusMsg(msg);
if (errorCheck == PowerProvider::CheckDBUS)
{
Notification::notify(
QObject::tr("Power Manager Error (D-BUS call)"),
msg.errorName() + "\n\n" + msg.errorMessage(),
"lxqt-logo.png");
}
}
// If the method no returns value, we believe that it was successful.
return msg.arguments().isEmpty() ||
msg.arguments().first().isNull() ||
msg.arguments().first().toBool();
}
/************************************************
Helper func
Just like dbusCall(), except that systemd
returns a string instead of a bool, and it takes
an "interactivity boolean" as an argument.
************************************************/
static bool dbusCallSystemd(const QString &service,
const QString &path,
const QString &interface,
const QDBusConnection &connection,
const QString &method,
bool needBoolArg,
PowerProvider::DbusErrorCheck errorCheck = PowerProvider::CheckDBUS
)
{
QDBusInterface dbus(service, path, interface, connection);
if (!dbus.isValid())
{
qWarning() << "dbusCall: QDBusInterface is invalid" << service << path << interface << method;
if (errorCheck == PowerProvider::CheckDBUS)
{
Notification::notify(
QObject::tr("Power Manager Error"),
QObject::tr("QDBusInterface is invalid")+ "\n\n" + service + " " + path + " " + interface + " " + method,
"lxqt-logo.png");
}
return false;
}
QDBusMessage msg = dbus.call(method, needBoolArg ? QVariant(true) : QVariant());
if (!msg.errorName().isEmpty())
{
printDBusMsg(msg);
if (errorCheck == PowerProvider::CheckDBUS)
{
Notification::notify(
QObject::tr("Power Manager Error (D-BUS call)"),
msg.errorName() + "\n\n" + msg.errorMessage(),
"lxqt-logo.png");
}
}
// If the method no returns value, we believe that it was successful.
if (msg.arguments().isEmpty() || msg.arguments().first().isNull())
return true;
QString response = msg.arguments().first().toString();
qDebug() << "systemd:" << method << "=" << response;
return response == "yes" || response == "challenge";
}
/************************************************
Helper func
************************************************/
bool dbusGetProperty(const QString &service,
const QString &path,
const QString &interface,
const QDBusConnection &connection,
const QString & property
)
{
QDBusInterface dbus(service, path, interface, connection);
if (!dbus.isValid())
{
qWarning() << "dbusGetProperty: QDBusInterface is invalid" << service << path << interface << property;
// Notification::notify(QObject::tr("LxQt Power Manager"),
// "lxqt-logo.png",
// QObject::tr("Power Manager Error"),
// QObject::tr("QDBusInterface is invalid")+ "\n\n" + service +" " + path +" " + interface +" " + property);
return false;
}
QDBusMessage msg = dbus.call("Get", dbus.interface(), property);
if (!msg.errorName().isEmpty())
{
printDBusMsg(msg);
// Notification::notify(QObject::tr("LxQt Power Manager"),
// "lxqt-logo.png",
// QObject::tr("Power Manager Error (Get Property)"),
// msg.errorName() + "\n\n" + msg.errorMessage());
}
return !msg.arguments().isEmpty() &&
msg.arguments().first().value<QDBusVariant>().variant().toBool();
}
/************************************************
PowerProvider
************************************************/
PowerProvider::PowerProvider(QObject *parent):
QObject(parent)
{
}
PowerProvider::~PowerProvider()
{
}
/************************************************
UPowerProvider
************************************************/
UPowerProvider::UPowerProvider(QObject *parent):
PowerProvider(parent)
{
}
UPowerProvider::~UPowerProvider()
{
}
bool UPowerProvider::canAction(Power::Action action) const
{
QString command;
QString property;
switch (action)
{
case Power::PowerHibernate:
property = "CanHibernate";
command = "HibernateAllowed";
break;
case Power::PowerSuspend:
property = "CanSuspend";
command = "SuspendAllowed";
break;
default:
return false;
}
return dbusGetProperty( // Whether the system is able to hibernate.
UPOWER_SERVICE,
UPOWER_PATH,
PROPERTIES_INTERFACE,
QDBusConnection::systemBus(),
property
)
&&
dbusCall( // Check if the caller has (or can get) the PolicyKit privilege to call command.
UPOWER_SERVICE,
UPOWER_PATH,
UPOWER_INTERFACE,
QDBusConnection::systemBus(),
command,
// canAction should be always silent because it can freeze
// g_main_context_iteration Qt event loop in QMessageBox
// on panel startup if there is no DBUS running.
PowerProvider::DontCheckDBUS
);
}
bool UPowerProvider::doAction(Power::Action action)
{
QString command;
switch (action)
{
case Power::PowerHibernate:
command = "Hibernate";
break;
case Power::PowerSuspend:
command = "Suspend";
break;
default:
return false;
}
return dbusCall(UPOWER_SERVICE,
UPOWER_PATH,
UPOWER_INTERFACE,
QDBusConnection::systemBus(),
command );
}
/************************************************
ConsoleKitProvider
************************************************/
ConsoleKitProvider::ConsoleKitProvider(QObject *parent):
PowerProvider(parent)
{
}
ConsoleKitProvider::~ConsoleKitProvider()
{
}
bool ConsoleKitProvider::canAction(Power::Action action) const
{
QString command;
switch (action)
{
case Power::PowerReboot:
command = "CanRestart";
break;
case Power::PowerShutdown:
command = "CanStop";
break;
default:
return false;
}
return dbusCall(CONSOLEKIT_SERVICE,
CONSOLEKIT_PATH,
CONSOLEKIT_INTERFACE,
QDBusConnection::systemBus(),
command,
// canAction should be always silent because it can freeze
// g_main_context_iteration Qt event loop in QMessageBox
// on panel startup if there is no DBUS running.
PowerProvider::DontCheckDBUS
);
}
bool ConsoleKitProvider::doAction(Power::Action action)
{
QString command;
switch (action)
{
case Power::PowerReboot:
command = "Restart";
break;
case Power::PowerShutdown:
command = "Stop";
break;
default:
return false;
}
return dbusCall(CONSOLEKIT_SERVICE,
CONSOLEKIT_PATH,
CONSOLEKIT_INTERFACE,
QDBusConnection::systemBus(),
command
);
}
/************************************************
SystemdProvider
http://www.freedesktop.org/wiki/Software/systemd/logind
************************************************/
SystemdProvider::SystemdProvider(QObject *parent):
PowerProvider(parent)
{
}
SystemdProvider::~SystemdProvider()
{
}
bool SystemdProvider::canAction(Power::Action action) const
{
QString command;
switch (action)
{
case Power::PowerReboot:
command = "CanReboot";
break;
case Power::PowerShutdown:
command = "CanPowerOff";
break;
case Power::PowerSuspend:
command = "CanSuspend";
break;
case Power::PowerHibernate:
command = "CanHibernate";
break;
default:
return false;
}
return dbusCallSystemd(SYSTEMD_SERVICE,
SYSTEMD_PATH,
SYSTEMD_INTERFACE,
QDBusConnection::systemBus(),
command,
false,
// canAction should be always silent because it can freeze
// g_main_context_iteration Qt event loop in QMessageBox
// on panel startup if there is no DBUS running.
PowerProvider::DontCheckDBUS
);
}
bool SystemdProvider::doAction(Power::Action action)
{
QString command;
switch (action)
{
case Power::PowerReboot:
command = "Reboot";
break;
case Power::PowerShutdown:
command = "PowerOff";
break;
case Power::PowerSuspend:
command = "Suspend";
break;
case Power::PowerHibernate:
command = "Hibernate";
break;
default:
return false;
}
return dbusCallSystemd(SYSTEMD_SERVICE,
SYSTEMD_PATH,
SYSTEMD_INTERFACE,
QDBusConnection::systemBus(),
command,
true
);
}
/************************************************
LxQtProvider
************************************************/
LxQtProvider::LxQtProvider(QObject *parent):
PowerProvider(parent)
{
}
LxQtProvider::~LxQtProvider()
{
}
bool LxQtProvider::canAction(Power::Action action) const
{
switch (action)
{
case Power::PowerLogout:
// there can be case when razo-session does not run
return dbusCall(LXQT_SERVICE, LXQT_PATH, LXQT_SERVICE,
QDBusConnection::sessionBus(), "canLogout",
PowerProvider::DontCheckDBUS);
default:
return false;
}
}
bool LxQtProvider::doAction(Power::Action action)
{
QString command;
switch (action)
{
case Power::PowerLogout:
command = "logout";
break;
default:
return false;
}
return dbusCall(LXQT_SERVICE,
LXQT_PATH,
LXQT_INTERFACE,
QDBusConnection::sessionBus(),
command
);
}
/************************************************
LxSessionProvider
************************************************/
LxSessionProvider::LxSessionProvider(QObject *parent):
PowerProvider(parent)
{
pid = (Q_PID)qgetenv("_LXSESSION_PID").toLong();
}
LxSessionProvider::~LxSessionProvider()
{
}
bool LxSessionProvider::canAction(Power::Action action) const
{
switch (action)
{
case Power::PowerLogout:
return pid != 0;
default:
return false;
}
}
bool LxSessionProvider::doAction(Power::Action action)
{
switch (action)
{
case Power::PowerLogout:
if(pid)
::kill(pid, SIGTERM);
break;
default:
return false;
}
return true;
}
/************************************************
HalProvider
************************************************/
HalProvider::HalProvider(QObject *parent):
PowerProvider(parent)
{
}
HalProvider::~HalProvider()
{
}
bool HalProvider::canAction(Power::Action action) const
{
return false;
}
bool HalProvider::doAction(Power::Action action)
{
return false;
}
/************************************************
CustomProvider
************************************************/
CustomProvider::CustomProvider(QObject *parent):
PowerProvider(parent),
mSettings("power")
{
}
CustomProvider::~CustomProvider()
{
}
bool CustomProvider::canAction(Power::Action action) const
{
switch (action)
{
case Power::PowerShutdown:
return mSettings.contains("shutdownCommand");
case Power::PowerReboot:
return mSettings.contains("rebootCommand");
case Power::PowerHibernate:
return mSettings.contains("hibernateCommand");
case Power::PowerSuspend:
return mSettings.contains("suspendCommand");
case Power::PowerLogout:
return mSettings.contains("logoutCommand");
default:
return false;
}
}
bool CustomProvider::doAction(Power::Action action)
{
QString command;
switch(action)
{
case Power::PowerShutdown:
command = mSettings.value("shutdownCommand").toString();
break;
case Power::PowerReboot:
command = mSettings.value("rebootCommand").toString();
break;
case Power::PowerHibernate:
command = mSettings.value("hibernateCommand").toString();
break;
case Power::PowerSuspend:
command = mSettings.value("suspendCommand").toString();
break;
case Power::PowerLogout:
command = mSettings.value("logoutCommand").toString();
break;
default:
return false;
}
return QProcess::startDetached(command);
}