Added KDE3 version of kpowersave

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kpowersave@1092957 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 214 insertions, 0 deletions

diff --git a/src/dbusHAL.h b/src/dbusHAL.h
new file mode 100644
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+++ b/src/dbusHAL.h
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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