// Copyright (c) 2010 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:

// Implements a utility class which read information from Central Repository

#include <centralrepository.h>

#include <usb/usblogger.h>

#ifdef SYMBIAN_FEATURE_MANAGER

    #include <featureuids.h>

    #include <featdiscovery.h>

#endif

#include "usbmanprivatecrkeys.h"

#include "UsbSettings.h"

#include "CPersonality.h"

#include "usbmancenrepmanager.h"

#include "CUsbDevice.h"

_LIT(KUsbCenRepPanic, "UsbCenRep");

/**

 * Panic codes for the USB Central Repository Manager

 */

enum TUsbCenRepPanic

    {

    ECenRepObserverNotStopped = 0,

    ECenRepObserverAlreadySet,

    ECenRepConfigError,

    ECenRepFeatureManagerError,

    };

// ---------------------------------------------------------------------------

// Private consctruction   

// ---------------------------------------------------------------------------

//

CUsbManCenRepManager::CUsbManCenRepManager(CUsbDevice& aUsbDevice)

  : iUsbDevice( aUsbDevice )

	{

	}

// ---------------------------------------------------------------------------

// The first phase construction   

// ---------------------------------------------------------------------------

//

CUsbManCenRepManager* CUsbManCenRepManager::NewL(CUsbDevice& aUsbDevice)

    {

    CUsbManCenRepManager* self = new (ELeave) CUsbManCenRepManager(aUsbDevice);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// The second phase construction   

// ---------------------------------------------------------------------------

//

void CUsbManCenRepManager::ConstructL()

    {

    // Open the Central Repository

    iRepository = CRepository::NewL( KCRUidUSBManagerConfiguration );

    CheckSignatureL();

    }

// ---------------------------------------------------------------------------

// Deconstruction   

// ---------------------------------------------------------------------------

//

CUsbManCenRepManager::~CUsbManCenRepManager()

	{

    delete iRepository;

	}

// ---------------------------------------------------------------------------

// Read specific Key whose value type is String   

// ---------------------------------------------------------------------------

//

HBufC* CUsbManCenRepManager::ReadStringKeyLC( TUint32 aKeyId )

	{

    HBufC* keyBuf = HBufC::NewLC( NCentralRepositoryConstants::KMaxUnicodeStringLength );

    TPtr key = keyBuf->Des();

    return keyBuf;

    }

// ---------------------------------------------------------------------------

// Read specific Key whose value type is TInt   

// ---------------------------------------------------------------------------

//

TInt CUsbManCenRepManager::ReadKeyL( TUint32 aKeyId )

    {

    TInt key;

    return key;

    }

// ---------------------------------------------------------------------------

// Check wheather cenrep's version is supported by cenrep manager 

// ---------------------------------------------------------------------------

//

void CUsbManCenRepManager::CheckSignatureL()

    {

    iSignature = ReadKeyL( KUsbManConfigSign );

    if ( iSignature < TUsbManagerSupportedVersionMin ||

            iSignature > TUsbManagerSupportedVersionMax )

        {

        }    

    }

// ---------------------------------------------------------------------------

// Read Device configuration table 

// ---------------------------------------------------------------------------

//

void CUsbManCenRepManager::ReadDeviceConfigurationL(CUsbDevice::TUsbDeviceConfiguration& aDeviceConfig)

    {

    //Only support version four right now.

    //Shall only have on device configuration setting.

    TUint32 devConfigCount = ReadKeyL( KUsbManDeviceCountIndexKey );

    RArray<TUint32> keyArray;

    CleanupClosePushL( keyArray );

    TInt keyCount = keyArray.Count();

    //Get each extension type key value and store in iExtList array

    for( TInt index = 0; index < keyCount; index++ )

        {

        TUint32 key = keyArray[index];

        TUint32 fieldId = ( key & KUsbManConfigFieldMask );

        if( fieldId == KUsbManDeviceVendorIdKey )

            {

            aDeviceConfig.iVendorId = ReadKeyL( key );

            }

        else if( fieldId == KUsbManDeviceManufacturerNameKey )

            {

            HBufC* manufacturer = ReadStringKeyLC( key );

            TPtr manufacturerPtr = manufacturer->Des();

            aDeviceConfig.iManufacturerName->Des().Copy( manufacturerPtr ); 

            CleanupStack::PopAndDestroy( manufacturer );

            }

        else if( fieldId == KUsbManDeviceProductNameKey )

            {

            HBufC* product = ReadStringKeyLC( key );

            TPtr productName = product->Des();

            aDeviceConfig.iProductName->Des().Copy( productName ); 

            CleanupStack::PopAndDestroy( product );

            }

        else

            {

            }

        }

    CleanupStack::PopAndDestroy( &keyArray );  

    }

// ---------------------------------------------------------------------------

// Read personality table 

// ---------------------------------------------------------------------------

//

void CUsbManCenRepManager::ReadPersonalitiesL(RPointerArray<CPersonality>& aPersonalities)

	{

	//Only support version four right now.

	// Get the personality count.

	TUint32 personalityCount = ReadKeyL( KUsbManDevicePersonalitiesCountIndexKey );

	RArray<TUint32> keyArray;

	CleanupClosePushL( keyArray ); 

	// Go through all personalities and store them.

    for( TInt personalityIdx = 0; personalityIdx < personalityCount; personalityIdx++ )

        {

        CPersonality* personality = CPersonality::NewL();

        CleanupStack::PushL( personality );

        // Find the keys belonging to the personality

        TUint32 devicePersonalitiesKey = KUsbManDevicePersonalitiesPartialKey | ( personalityIdx << KUsbManPersonalitiesOffset );

        TInt keyCount = keyArray.Count();

        // Get each key value of the personality and store it.

        for( TInt keyIdx = 0; keyIdx < keyCount; keyIdx++ )

            {

            TUint32 key = keyArray[keyIdx];

            TUint32 fieldId = (key & KUsbManConfigFieldMask);

            switch( fieldId )

                {

                case KUsbManDevicePersonalitiesDeviceClassKey:

                    personality->SetDeviceClass(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesDeviceSubClassKey:

                    personality->SetDeviceSubClass(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesProtocolKey:

                    personality->SetDeviceProtocol(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesNumConfigKey:

                    personality->SetNumConfigurations(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesProductIdKey:

                    personality->SetProductId(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesBcdDeviceKey:

                    personality->SetBcdDevice(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesFeatureIdKey:

                    personality->SetFeatureId(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesPersonalityIdKey:

                    personality->SetPersonalityId(ReadKeyL( key ));

                    ReadConfigurationsForPersonalityL( personality->PersonalityId(), *personality );

                    break;

                case KUsbManDevicePersonalitiesPropertyKey:

                    personality->SetProperty(ReadKeyL( key ));

                    break;

                case KUsbManDevicePersonalitiesDescriptionKey:

                    {

                    HBufC* description;

                    description = ReadStringKeyLC( key );

                    personality->SetDescription( description );

                    CleanupStack::PopAndDestroy( description );

                    break;

                    }

                default:

                    break;

                }

            }

        personality->SetVersion(iSignature);

        //The following code is to check whether we support this personality. 

        if(personality->FeatureId() != KUsbManFeatureNotConfigurable)

            {

            if(!IsFeatureSupportedL(personality->FeatureId()))

                {

                CleanupStack::PopAndDestroy(personality);

                continue;           

                }

            }

        //The following code is to check whether we support this personality. It will not include:

        //1)the personality which contains single class which is not supported

        //2)the personality which contains multiple classes which are all not supported

        TBool isPersonalitySupport = EFalse;

        TInt configurationCount = personality->PersonalityConfigs().Count();

        for(TInt configurationIdx = 0; configurationIdx < configurationCount; ++configurationIdx)

            {

            const RPointerArray<CPersonalityConfigurations>& personalityConfigs = personality->PersonalityConfigs();

            CPersonalityConfigurations *personalityConfigurations = personalityConfigs[configurationIdx];

            TInt classesCount = personalityConfigurations->Classes().Count();

            if(0 != classesCount)

                {

                isPersonalitySupport = ETrue;

                break;

                }

            }

        if(isPersonalitySupport)

            {

            aPersonalities.Append( personality );

            CleanupStack::Pop( personality );

            }

        else

            {

            CleanupStack::PopAndDestroy(personality);

            }

        }

    CleanupStack::PopAndDestroy( &keyArray );  	

    }

// ---------------------------------------------------------------------------

// Read configuration table for specific personality

// ---------------------------------------------------------------------------

//

void CUsbManCenRepManager::ReadConfigurationsForPersonalityL(TInt aPersonalityId, CPersonality& aPersonality)

    {

    RArray<TUint32> configArray;

    CleanupClosePushL(configArray);

    //Only support version four right now.

    // Get the configuration count.

    TUint32 configCount = configArray.Count();

    TUint32 totalConfigCount = ReadKeyL( KUsbManDeviceConfigurationsCountIndexKey );

    //This is intend to handle one special case that key 0x2ff00's value

    // equal our target personality id.

    if(totalConfigCount == aPersonalityId)

        {

        --configCount;

        }

    TInt keyCount = 0;

    if(TUsbManagerSupportedVersionFour == iSignature)

        {

        keyCount = KUsbManDeviceConfigurationsKeyCountVersionFour;

        }

    // Go through all configurations belonging to this personality 'aPersonalityId'

    for ( TInt configIdx = 0; configIdx < configCount; configIdx++ )

        {

        CPersonalityConfigurations* config = new ( ELeave ) CPersonalityConfigurations;

        CleanupStack::PushL( config );

        TUint32 key = configArray[configIdx];

        // Get each key value in the configuration and store it

        for ( TInt keyIdx = 0; keyIdx < keyCount; keyIdx++ )

            {

            TUint32 fieldId = ( (key + keyIdx ) & KUsbManConfigFieldMask );

            TInt keyValue = -1;

            if(KUsbManDeviceConfigurationsPersonalityIdKey == fieldId)

                {

                TRAPD( err, keyValue = ReadKeyL( key + keyIdx ) );

                if( err == KErrNone )

                    {

                    config->SetPersonalityId( keyValue );

                    }

                }

            else if(KUsbManDeviceConfigurationsIdKey == fieldId)

                {

                TRAPD( err, keyValue = ReadKeyL( key + keyIdx ) );

                if( err == KErrNone )

                    {

                    config->SetConfigId(keyValue);

                    }

                }

            else if(KUsbManDeviceConfigurationsClassUidsKey == fieldId)

                {

                HBufC* keyValueBuf = ReadStringKeyLC( key + keyIdx );                

                TPtr keyPtr = keyValueBuf->Des();

                RArray<TUint> classUids;

                CleanupClosePushL( classUids );

                iUsbDevice.ConvertUidsL( keyPtr, classUids );

                TInt uidsCnt = classUids.Count();

                // Get featureId of each class and store each class.

                TInt featureId = KUsbManFeatureNotConfigurable;

                CPersonalityConfigurations::TUsbClasses usbClass;                     

                for ( TInt uidIdx = 0; uidIdx < uidsCnt; uidIdx++ )

                    {

                    usbClass.iClassUid = TUid::Uid( classUids[uidIdx] );

                    usbClass.iFeatureId = featureId; // By default

                    if ( IsClassConfigurableL( classUids[uidIdx], featureId ) )

                        {                                

                        usbClass.iFeatureId = featureId;

                        if(IsFeatureSupportedL(featureId))

                            {

                            config->AppendClassesL( usbClass );

                            }

                        }

                    else

                        {

                        config->AppendClassesL( usbClass );

                        }

                    }

                CleanupStack::PopAndDestroy( &classUids ); // close uid array 

                CleanupStack::PopAndDestroy( keyValueBuf );

                }

            else

                {

                }

            }

        aPersonality.AppendPersonalityConfigsL( config );

        CleanupStack::Pop( config );

        }

    CleanupStack::PopAndDestroy( &configArray );     

    }

// ---------------------------------------------------------------------------

// Check the class belonging to a personality configurable or not.

// ---------------------------------------------------------------------------

//

TBool CUsbManCenRepManager::IsClassConfigurableL(TUint aClassId, TInt& aFeatureId)

    {

    TBool classConfigurable = EFalse;

    RArray<TUint32> keyArray;

    CleanupClosePushL(keyArray);

    TInt err = iRepository->FindEqL( KUsbManDeviceConfigurableClassesPartialKey, KUsbManConfigFirstEntryMask, (TInt)aClassId, keyArray );

    switch ( err )

        {

        case KErrNotFound:

            break;

        case KErrNone:

            {

            // The array size always is 1, so here using 0 as index.

            aFeatureId = ReadKeyL( keyArray[0] | KUsbManDeviceConfigurableClassesFeatureIdKey );

            classConfigurable = ETrue;

            break;

            }

        default:

            break;

        }    

    CleanupStack::PopAndDestroy( &keyArray );     

    return classConfigurable;

    }