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/**************************************************************************
* Copyright (C) 2006-2007 by Danny Kukawka *
* <[email protected]>, <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of version 2 of the GNU General Public License *
* as published by the Free Software Foundation. *
* *
* 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
/*!
* \file dbusHAL.h
* \brief Headerfile for dbusHAL.cpp and the class \ref dbusHAL.
*/
/*!
* \class dbusHAL
* \brief class for connection to HAL via D-Bus
* \author Danny Kukawka, <[email protected]>, <[email protected]>
* \date 2006-2007
*/
#ifndef _DBUSHAL_H_
#define _DBUSHAL_H_
#ifndef DBUS_API_SUBJECT_TO_CHANGE
#define DBUS_API_SUBJECT_TO_CHANGE
#endif
// Global Header
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
// QT - Header
#include <qstring.h>
// D-Bus Header
#include <dbus/dbus.h> // needed for dbus_bool_t
#include <dbus/message.h>
#include <dbus/connection.h>
// HAL Library
#include <hal/libhal.h>
// kpowersave - Header
#include "kpowersave_debug.h"
#define HAL_SERVICE "org.freedesktop.Hal"
#define HAL_PM_IFACE "org.freedesktop.Hal.Device.SystemPowerManagement"
#define HAL_LPANEL_IFACE "org.freedesktop.Hal.Device.LaptopPanel"
#define HAL_CPUFREQ_IFACE "org.freedesktop.Hal.Device.CPUFreq"
#define HAL_COMPUTER_UDI "/org/freedesktop/Hal/devices/computer"
#define CK_SERVICE "org.freedesktop.ConsoleKit"
#define CK_MANAGER_IFACE "org.freedesktop.ConsoleKit.Manager"
#define CK_MANAGER_OBJECT "/org/freedesktop/ConsoleKit/Manager"
#define CK_SESSION_IFACE "org.freedesktop.ConsoleKit.Session"
enum msg_type {
ACPI_EVENT,
DBUS_EVENT,
HAL_DEVICE,
HAL_PROPERTY_CHANGED,
HAL_CONDITION,
CONSOLEKIT_SESSION_ACTIVE,
POLICY_POWER_OWNER_CHANGED
};
class dbusHAL : public QObject{
Q_OBJECT
private:
//! QT connection to D-Bus
DBusQt::Connection* m_dBusQtConnection;
//! real connection to D-Bus
DBusConnection *dbus_connection;
//! HAL context
LibHalContext *hal_ctx;
//! to store information if KPowersave is connected to D-Bus
/*!
* This boolean represent information about the state of the connection to D-Bus
* \li true: if connected
* \li false: if disconnected
*/
bool dbus_is_connected;
//! to store information if KPowersave is connected to HAL
/*!
* This boolean represent information about the state of the connection to HAL
* \li true: if connected
* \li false: if disconnected
*/
bool hal_is_connected;
//! if we could claim the org.freedesktop.Policy.Power interface
/*!
* This boolean represent information if KPowersave could claim the
* org.freedesktop.Policy.Power interface from the D-Bus
* \li true: if aquired
* \li false: if not
*/
bool aquiredPolicyPower;
/* D-Bus helper functions */
//! to initialise the connection to D-Bus
bool initDBUS();
//! to call a methode on a dbus interface with reply
bool dbusMethodCall( QString interface, QString path, QString object, QString method,
DBusBusType dbus_type, void *retvalue, int retval_type,
int first_arg_type, va_list var_args);
//! function to be called back by DBusPendingCall::dbus_pending_call_set_notify()
static void callBackSuspend (DBusPendingCall* pcall, void* /*data*/);
/* HAL helper functions */
//! to initialise the connection to HAL
bool initHAL();
//! to free the HAL context
void freeHAL();
public:
//! default constructor
dbusHAL();
//! default destructor
~dbusHAL();
//! to reconnect to D-Bus and HAL
bool reconnect();
//! to reconnect only HAL
bool reconnectHAL();
//! to close the connection to D-Bus and HAL
bool close();
//! to aquire the org.freedesktop.Policy.Power interface
bool aquirePolicyPowerIface();
//! to release the org.freedesktop.Policy.Power interface
bool releasePolicyPowerIface();
//! to check if the org.freedesktop.Policy.Power interface has an owner
bool isPolicyPowerIfaceOwned();
// --- helper to get private members of the class --- //
//! to get information if KPowersave is connected to D-Bus
bool isConnectedToDBUS();
//! to get information if KPowersave is connected to HAL
bool isConnectedToHAL();
//! to get info about claim org.freedesktop.Policy.Power interface
bool aquiredPolicyPowerInterface();
//! return the current HAL context
LibHalContext *get_HAL_context();
//! return the current DBus connection
DBusConnection *get_DBUS_connection();
/* HAL device information stuff */
//! Query a integer device property from HAL
bool halGetPropertyInt(QString udi, QString property, int *returnval);
//! Query a bolean device property from HAL
bool halGetPropertyBool(QString udi, QString property, bool *returnval);
//! Query a string device property from HAL
bool halGetPropertyString(QString udi, QString property, QString *returnval);
//! Query a string list device property from HAL
bool halGetPropertyStringList (QString udi, QString property, QStringList *devices);
//! Query a capability for a HAL device
bool halQueryCapability(QString udi, QString capability, bool *returnval);
/* functions to find devices and check stuff */
//! check if a property exist on a device
bool halDevicePropertyExist(QString udi, QString property);
//! to find a device by capability
bool halFindDeviceByCapability (QString capability, QStringList *devices);
//! to find a device by a string property
bool halFindDeviceByString (QString property, QString keyval, QStringList *devices);
/* D-Bus helper functions */
/* functions to call methodes */
//! to call a methode on a dbus system bus method without reply
bool dbusSystemMethodCall( QString interface, QString path, QString object, QString method,
int first_arg_type, ... );
//! to call a methode on a dbus system bus method with reply
bool dbusSystemMethodCall( QString interface, QString path, QString object, QString method,
void *retvalue, int retval_type, int first_arg_type, ... );
//! to call a suspend method on HAL
bool dbusMethodCallSuspend ( const char *suspend );
/* PolicyKit call helper */
//! check if the user has a requested privilege
int isUserPrivileged( QString privilege, QString udi, QString ressource = "", QString user = QString());
//! wrapper to emit a signal with a event from HAL
void emitMsgReceived( msg_type type, QString message, QString string );
signals:
//! signal with message to forward from D-Bus to HAL
void msgReceived_withStringString( msg_type, QString, QString );
//! signal if we resumed!
void backFromSuspend( int result );
};
//! filter function to filter out needed information from D-Bus messages
DBusHandlerResult filterFunction (DBusConnection *connection, DBusMessage *message, void *data);
#endif
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