/*

* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: MPM CommsDat Access class definitions

*

*/

/**

@file mpmcommsdataccess.h

Mobility Policy Manager CommsDat Access class definitions.

*/

#ifndef MPMCOMMSDATACCESS_H

#define MPMCOMMSDATACCESS_H

//  INCLUDES

//

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <commsdat_partner.h>

#endif

#include <e32base.h>

#include <commsdattypesv1_1.h>

#include <cmpluginwlandef.h>

#include <cmmanager.h>

#include "mpmserversession.h"

#include "mpmlogger.h"

class CCDWlanServiceRecord;

using namespace CommsDat;

using namespace CMManager;

const TInt KMpmDoubleLength = 2;

// Modem bearer names for WLAN Access Points

_LIT( KModemBearerWLAN, "WLANBearer" );

// Length for allocating space for commsdat text fields

//

const TInt KCommsDatTextBufferLength = KMaxTextLength + 1;

enum TWlanIapType

    {

    ENotWlanIap,

    EWlanIap,

    EEasyWlanIap

    };

// Structure containing WLAN WEP key data

// 

class TWepKeyData

    {

public:

    inline TWepKeyData(): 

    iWep1(),

    iWep2(),

    iWep3(),

    iWep4(),

    iWepFormat1( 0 ),

    iWepFormat2( 0 ),

    iWepFormat3( 0 ),

    iWepFormat4( 0 ),

    iDefaultWep( EWlanDefaultWepKey1 )

    {};

    TWlanWepKey iWep1;

    TWlanWepKey iWep2;

    TWlanWepKey iWep3;

    TWlanWepKey iWep4;

    TUint iWepFormat1;

    TUint iWepFormat2;

    TUint iWepFormat3;

    TUint iWepFormat4;

    TWlanDefaultWepKey iDefaultWep;

    };

// CLASS DECLARATION

/**

*  

*  @lib MPMServer.exe

*  @since 

*/

class CMPMCommsDatAccess : public CBase

    {

    public: // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CMPMCommsDatAccess* NewL();

        /**

        * Destructor.

        */

        virtual ~CMPMCommsDatAccess();

    public: // New methods

        /**

        * Validates the given IAP.

        * @since 3.1

        * @param aConnId Connection Id

        * @param aIapId IAP Id to be validated

        * @param aNetId Network ID for the IAP

        * @param aLanOrWlan IAP uses either LAN or WLAN bearer

        * @param aSession Handle to session class

        */

        void ValidateIapL( const TConnectionId      aConnId, 

                           TUint32&                 aIapId, 

                           TUint32&                 aNetId, 

                           TBool&                   aLanOrWlan,

                           CMPMServerSession&       aSession );

        /**

        * Checks the bearer type of given IAP.

        * @since 3.1

        * @param aIapId IAP Id to be checked

        * @param aLanOrWlan IAP uses either LAN or WLAN bearer

        * @param aAvailableIAPList List of IAPs

        */

        void CheckBearerL( TUint32&                 aIapId, 

                           TBool&                   aLanOrWlan, 

                           const RAvailableIAPList& aAvailableIAPList,

                           CMPMServerSession&       aSession );

        /**

        * Checks if given IAP is Easy WLan.

        * @since 3.1

        * @param aIapId IAP Id to be checked

        * @return ETrue if IAP Id is Easy WLan, otherwise EFalse.

        */

        TBool CheckEasyWLanL( TUint32 aIapId ) const;

        /**

        * Find all snap ids

        *

        * @since 3.2

        * @param aSnapIds Array which will be set to 

        * contain the snap ids

        */

        void FindAllSnapsL( RArray<TUint>& aSnapIds );

        /**

        * Dump CommsDat IAPs to log in order to support testing.

        * @since 3.0

        */

        void DumpIAPsL() const;

        /**

        * Dump CommsDat Snaps to log in order to support 

        * testing.

        * @since 3.1

        */

        void DumpSnapsL();

        /**

        * Determine the priority for the Iap Id.

        * @since 3.1

        * @param aDNIaps List of found DN-IAP entries

        * @param aAvailableIAPs List of IAPs

		* @param aSession Handle to session class.

        */

        void DeterminePrioritiesL( RArray<TNetIap>&         aDNIaps, 

                                   const RAvailableIAPList& aAvailableIAPs,

                                   CMPMServerSession&       aSession );

        /**

        * Finds the service type for the IAP and returns the global 

        * bearer priority for that service type.

        * @since 3.1

        * @param aIapId Given Iap Id

        * @param aPriority Global bearer priority for the service type

        */

        void GlobalBearerPriorityL( const TUint32    aIapId,

                                    TUint32&         aPriority);

        /**

        * Checks if there is a WLAN IAP in CommsDat.

        * @since 3.2

        * @param Handle to session class.

        */

        void CheckWLANIapL(CMPMServerSession& aSession);

        /**

        * Checks whether there is a wlan iap which matches the 

        * parameter settings.

        *

        * @since 3.2

        * @param aSsid Wlan iap ssid

        * @param aSecMode Wlan iap security mode

        * @param aConnMode Wlan iap connection mode

        */

        TUint32 CheckWLANIapWithSsidL( TWlanSsid& aSsid, 

                                       TUint32 aSecMode,

                                       TWlanNetMode aConnMode );

        /**

        * Stores easy wlan settings into commsdat. 

        *

        * @since 3.2

        * @param aSsid Wlan iap ssid, stored in used ssid field

        * @param aSecMode Wlan iap security mode

        * @param aConnMode Wlan iap connection mode

        * @param aWepData WEP key data

        * @param aEnableWpaPsk Wlan iap enable psk mode

        * @param aWpaPsk Wlan iap wpa psk

        * @param aWpaKeyLen Wlan iap wpa key length

        */

        void SetEasyWlanDataL( const TWlanSsid& aSsid,

                               TUint            aSecMode,

                               TWlanNetMode     aConnMode,

                               TWepKeyData      aWepData,

                               TUint            aEnableWpaPsk,

                               const TDesC8&    aWpaPsk,

                               TUint            aWpaKeyLen  );

        /**

        * Returns Easy wlan service record id.

        * @since 3.2

        * @param aDb DB session

        * return Easy wlan service record id

        */

        TUint32 FindEasyWlanServiceIdL( CMDBSession* aDb );

        /**

        * Checks if the HiddenAgent metadata is set for this IAP.

        * @since 3.2

        * @param aIapId Given Iap Id 

        * return ETrue if HiddenAgent metadata is set, otherwise EFalse.

        */

        TBool CheckHiddenAgentL( const TUint32 aIapId ) const;

        /**

        * Checks if the given IAP Id shares the same SSID 

        * as the active WLAN connection.

        * @since 3.2

        * @param aSSID the id of active wlan network.

        * @param aIapId IAP Id to be checked.

        * @param aMatchFound ETrue if the given IAP Id shares the same SSID 

        * as the active WLAN connection, otherwise EFalse.

        * @param aSession Handle to session class.

        */

        void MatchSSIDL( const TWlanSsid&   aSSID,

                         TUint32            aIapId, 

                         TBool&             aMatchFound,

                         CMPMServerSession& aSession );

        /**

        * Determines whether the IAP is a virtual IAP.

        * @since 3.2

        * @param aVirtualIapId Given virtual Iap Id

        */

        TBool IsVirtualIapL( const TUint32 aVirtualIapId ) const;

        /**

        * Determines whether the SNAP contains at least the 

        * specified number of WLAN IAPs.

        * @since 3.2

        * @param aSnapRecord Id of the SNAP record

        * @param aIapPath Chain of Iaps traversed this far. 

        * @param aMinNrWlan Minimum number of WLAN IAPs to search for 

        * Used for detecting loops in configuration

        */

        TBool SnapContainsWlanL( TUint32		aSnapRecord, 

        						 RArray<TUint>& aIapPath,

        						 TInt 			aMinNrWlan );

        /**

        * Calls SearchDNEntries for SNAP and if the SNAP contains

        * embedded SNAP also calls SearchDNEntries for that.

        * @since 3.2

        * @param aSnap SNAP id

        * @param aDestNetIaps Iaps of original SNAP are store here

        * @param aEmbeddedIaps Iaps of embedded SNAP are store here

        */

        void SearchDNEntriesWithEmbeddedL( TUint32 aSnap, 

                                           RArray<TNetIap>& aDestNetIaps,

                                           RArray<TNetIap>& aEmbeddedIaps );

        /**

        * Checks if given IAP is WLAN and whether it is EasyWLAN IAP.

        * @since 3.2

        * @param aIapId IAP Id to be checked

        * @return One of TWlanIapType values depending on 

        * whether IAP is WLAN or Easy WLAN

        */

        TWlanIapType CheckWlanL( TUint32 aIapId ) const;

        /**

        * Removes categorised IAPs from the list of available IAPs.

        * @since 3.2

        * @param aIAPList List of IAPs

        */

        void RemoveCategorisedIapsL( RAvailableIAPList& aIAPList );

       /**

        * Get service id of an iap.

        * @since 3.2

        * @param aIapId Id of an Iap.

        */

       TUint32 GetIapServiceIdL( TUint32 aIapId );

       /**

        * Returns ElementId of the record with attribute and flags bit 

        * removed. 

        * 

        * THIS METHOD MUST BE USED INSTEAD OF COMMSDAT ElementId() 

        * in order to clear possible attribute/flag bits. 

        * Otherwise Find may fail if incorrect element id is used.

        *

        * @since 3.2

        * @param aRecord A record to get the element id from

        * @return Element id value

        */        

        static TUint32 GetRealElementId( CMDBRecordBase* aRecord );

        /**

         * Check if the Wlan background scan is on.

         * @return ETrue if set.

         */

        TBool WlanBackgroundScanIsOnL();

       /**

        * Returns true if destination is internet or 

        * iap belongs to internet destination.

        * @since 5.1

        * @param aIapId IAP id

        * @param aSnapId Snap id

        * @return True or false depending on destination type.

        */

        TBool IsInternetSnapL( TUint32 aIapId, TUint32 aSnapId );

       /**

        * Used to get bearer type of the iap.

        *

        * @since 5.0

        * @param aIapId Iap id of the connection.

        * @return Type of the bearer.

        */

        TMPMBearerType GetBearerTypeL( TUint32 aIapId );

       /**

        * Check if all active connections are in same snap.

        *

        * @since 5.0

        * @param aActiveBMConns Array of active connections.

        * @param aSnapId Destination where connections are located is returned

        *                to this parameter.

        * @return ETrue if all active connections are in same snap.

        */

        TBool AreActiveIapsInSameSnapL ( RArray<TActiveBMConn>& aActiveBMConns,

                                         TUint32& aSnapId );

       /**

        * Select active connection according to snap priorities.

        *

        * @since 5.0

        * @param aSnapId Snap id of the connection.

        * @param aActiveBMConns Array of active connections.

        * @param aActiveIapId Iap id of the selected active connection.

        * @param aActiveSnapId Snap id of the selected active connection.

        * @param aActiveBearerType Bearer type of the selected active connection.

        * @param aSession Handle to session class.

        */

        void SelectActiveConnectionL ( const TUint32 aSnapId,

                                       RArray<TActiveBMConn>& aActiveBMConns,

                                       TUint32& aActiveIapId,

                                       TUint32& aActiveSnapId,

                                       TMPMBearerType& aActiveBearerType,

                                       CMPMServerSession& aSession );

       /**

        * Check if snap is empty.

        *

        * @since 5.0

        * @param aSnapId Snap id of the connection.

        * @return ETrue if snap is empty.

        */

        TBool IsSnapEmptyL( TUint32 aSnapId );

       /**

        * Verifies that Iap exists. Leaves with error code otherwise

        * @since 9.1

        * @param aIapId Iap

        */        

        void VerifyIapExistsL( TUint32 aIapId );

        /**

         * Gets SnapTierTagId

         * @param aDbs commsdat session

         * @param ElementId

         * @return TagId

         */

        TInt TierLinktoTagIdL( CMDBSession* aDbs, TUint32 aElementId ); 

        /**

         * Maps SNAP RecId to SNAP AP

         * @since 9.1

         * @param aApRecId netid

         * @return SNAP AP

         */

         TInt MapAPRecIdtoSnapAPL( TInt aApRecId );

        /**

         * Maps NetId to SNAP AP

         * @since 9.1

         * @param aNetId netid

         * @return SNAP AP

         */

         TInt MapNetIdtoSnapAPL( TInt aNetId );

        /**

         * Maps SNAP AP to NetId

         * @since 9.1

         * @param aAP APId

         * @return NetId

         */

         TInt MapSnapAPtoNetIdL( TInt aAP );

        /**

        * Finds DN-IAP entries based on given Snap Id.

        * @since 3.1

        * @param aSnapId Given Snap Id

        * @param aDestNetIds List of found DN-IAP entries

        */

        void SearchDNEntriesL( const TUint32&   aSnapId,

                               RArray<TNetIap>& aDestNetIds );

        /**

         * Get current forced roam setting

         * @since 5.2

         * @return Current forced roam setting in commsdat.

         */

        TCmUsageOfWlan ForcedRoamingL() const;

        /**

         * Read current general connection settings from CommsDat

         * @since 5.2

         * @return Current general connection settings from CommsDat.

         */        

        TCmGenConnSettings ReadGenConnSettingsL() const;

        /**

         * Write general connection settings to CommsDat

         * @since 5.2

         * @param aGenConnSettings General connection settings to written to CommsDat

         */

        void WriteGenConnSettingsL(TCmGenConnSettings& aGenConnSettings);

        /**

        * Returns Snap id of destination requested in Snap purpose.

        * @since 5.2

        * @return Snap id.

        */

        TUint32 DestinationIdL( CMManager::TSnapPurpose aSnapPurpose );

        /**

        * Finds the real IAP behind the virtual IAP.

        * @since 3.1

        * @param aVirtualIapId Given virtual Iap Id

        * @param aRealIapId Real Iap Id

        * @param aAvailableIAPList List of IAPs

        * @param aSession Handle to session class

        */

        void FindRealIapL( const TUint32             aVirtualIapId,

                           TUint32&                  aRealIapId, 

                           const RAvailableIAPList&  aAvailableIAPList,

                           CMPMServerSession&        aSession );

    private:

       /**

        * Loads Iap record based on record id.

        * @since 3.2

        * @param aIapId Id of an Iap.

        * @param aDb DB session.

        * @return Iap record

        */

        CCDIAPRecord* LoadIapRecordLC( const TUint32 aIapId, CMDBSession* aDb ) const;

        /**

        * Finds access network Id based on given IAP Id.

        * @since 3.1

        * @param aIapId Given IAP Id

        * @param aNetId Found access network Id

        */

        void SearchAccessNetIdL( const TUint32&  aIapId,

                                 TUint32&        aNetId );

        /**

        * Checks if given virtual IAP may use underlying WLAN IAP.

        * @since 3.2

        * @param aVirtualIapId IAP Id to be checked

        * @param aIapPath Chain of Iaps traversed this far. 

        * Used for detecting loops in configuration

        * @return ETrue WLAN IAP exists under the virtual IAP, 

        * otherwise EFalse.

        */

        TBool WlanUnderVirtualL( const TUint32 aVirtualIapId, RArray<TUint>& aIapPath  );        

       /**

        * loads linked record using element id.

        * @since 3.2

        * @param aSession DB Session to use

        * @param aElementId Link element id 

        * @return Pointer to allocated record structure.

        */        

        CCDRecordBase* LoadLinkedRecordL( CMDBSession&  aSession, 

                                          TMDBElementId aElementId );

        /**

         * Sets WEP key data for WLAN service record

         * @since 9.1

         * @param aFormatId Id of the field where WEP format is stored