/*

* Copyright (c) 2008-2009 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: S60 IP TM selector implementation

*

*/

/**

@file s60tiermanagerselector.cpp

S60 IP TM selector implementation

*/

#include <comms-infras/ss_log.h>

#include <comms-infras/ss_tiermanagerutils.h>

#include <commsdattypesv1_1.h> // CommsDat

#include <es_connpref.h>    //TConnIdList

#include <commdbconnpref.h>

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <commsdattypeinfov1_1_internal.h>

#include <commsdattypesv1_1_partner.h> 

#endif

#include "s60tiermanagerselector.h"

#include "s60tiermanagerfactory.h"

#include "s60mcpr.h"

using namespace ESock;

using namespace CommsDat;

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

// IpProto Tier Manager's UID.

// Since meaning of the selection policy id changes with

// the legacy flavor it is difficult to derive the next layer

// tier's id dynamically when supporting all of the legacy scenarios.

// At the same time it is known that for all of these legacy

// setups this is and always will be the only next layer tier manager.

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

static const TUid KLegacyNextLayerTierId = { 0x10281DF0 }; //CIPProtoTierManagerFactory::iUid

#ifdef __CFLOG_ACTIVE

#define KS60TierMgrTag KESockMetaConnectionTag

_LIT8(KS60TierMgrSubTag, "netmcpr");

#endif

//Panic codes

#ifdef _DEBUG

_LIT(KS60SelectorPanic, "S60TMSelector");

enum TS60SelectorPanic

    {

    EExpectedAccessPointAwareSystem = 0,     //

    EUnExpectedSelectionPreferences = 1,

    };

#endif // _DEBUG

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

// CSimpleS60SelectorBase::CSimpleS60SelectorBase

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

//

CSimpleS60SelectorBase::CSimpleS60SelectorBase( const Meta::SMetaData& aSelectionPreferences )

    :    ASimpleSelectorBase( aSelectionPreferences )

    {

    }

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

// CSimpleS60SelectorBase::~CSimpleS60SelectorBase

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

//

CSimpleS60SelectorBase::~CSimpleS60SelectorBase()

    {

    }

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

// CSimpleS60SelectorBase::SelectL

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

//

void CSimpleS60SelectorBase::SelectL( ISelectionNotify& aSelectionNotify )

    {

    ASSERT(iDbs);

    ASSERT(iTierRecord);

    // Default access point is required as it will point the correct node UIDs for the next layer.

    iDefaultAp = iTierRecord->iDefaultAccessPoint;

    //Since we do not understand the preferences, we create a provider based on a default Access Point,

    //like in the implicit case, but we also pass the preferences down.

    __CFLOG_VAR((KS60TierMgrTag, KS60TierMgrSubTag, _L8("S60MCPR::CSimpleS60SelectorBase %08x::\tSelectL() Using Default AP:%d"),this,iDefaultAp));

    //Legacy Attach -case handling is in NetMCPR and IPProtoTM

    // 399 Attach is not supported

    const TConnPref& prefs = iSelectionPrefs.Prefs();

    iSubSessionUniqueId = iSelectionPrefs.SubSessionUniqueId();

    switch ( prefs.ExtensionId() )

        {

        case TConnPref::EConnPrefCommDbMulti:

            {

            // Sanity check.

            TCommDbMultiConnPref& multiPrefs = TCommDbMultiConnPref::Cast( prefs );

            TCommDbConnPref connpref;

            TInt error = multiPrefs.GetPreference( 1, connpref );

            // if bad connpref

            if ( error != KErrNone )

                {

                User::Leave( error );

                }

            //else ok. MPM handles the TConnPref parsing.

            break;

            }

        case TConnPref::EConnPrefUnknown: // same as IsEmpty() == ETrue

        case TConnPref::EConnPrefCommDb:

        case TConnPref::EConnPrefSnap:

            {

            // Supported. MPM handles the parsing.

            break;

            }

        case TConnPref::EConnPrefIdList:

        case TConnPref::EConnPrefSip:

        case TConnPref::EConnPrefProviderInfo:

        default:

            {

            // Unsupported

            User::Leave( KErrNotSupported );

            break;

            }

        }

    // We use default AP always. If some variation is needed in APs, then

    // this must be changed to use specific APs instead of the default one.

    aSelectionNotify.SelectComplete( this, FindOrCreateProviderL( iDefaultAp ));

    aSelectionNotify.SelectComplete( this, NULL );

    }

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

// CSimpleS60SelectorBase::FindOrCreateProviderL

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

//

CMetaConnectionProviderBase* CSimpleS60SelectorBase::FindOrCreateProviderL( TUint aAccessPoint )

    {

    ASSERT(aAccessPoint); //Should not be 0 now.

    //Find factory

    TUid mCprUid = TierManagerUtils::ReadMCprUidL( aAccessPoint, *iDbs );

    CMetaConnectionProviderFactoryBase* factory = 

        static_cast<CMetaConnectionProviderFactoryBase*>(iMetaContainer.FindOrCreateFactoryL( mCprUid ));

    //Create the provider

    TUid tierId = TUid::Uid( iTierRecord->iRecordTag );

	TProviderInfo providerInfo( tierId, aAccessPoint );

	TUid tierImplUid = TierManagerUtils::MapTierIdtoTierImplIdL(tierId,*iDbs);

    TMetaConnectionFactoryQuery query( providerInfo, tierImplUid );

    //We are not looking for an existing provider, we always create a new one.

    //This is the legacy selection (can also be the legacy attach, one layer deep selection)

    CMetaConnectionProviderBase* provider = static_cast<CMetaConnectionProviderBase*>( factory->CreateObjectL( query ));

    CS60MetaConnectionProvider* prov = static_cast<CS60MetaConnectionProvider*>( provider );

    CleanupStack::PushL( provider );

    // Provision selection preferences to S60 NetMCPR.

    prov->SetSelectionPrefs( iSelectionPrefs );

    prov->SetSubSessionUniqueId( iSubSessionUniqueId );

    // Change the provider info so that this provider is never found by other selections

    const TProviderInfo& pi = provider->ProviderInfo();

    provider->SetProviderInfo( TProviderInfo( pi.TierId(), pi.APId(), provider )); //This provider will never be found

    // Override the selection policy as we always do for legacy prefs

    ASSERT(provider->AccessPointConfig().FindExtension(TOverridenSelectionPrefsExt::TypeId())==NULL);

	RMetaExtensionContainer mec;

	mec.Open(provider->AccessPointConfig());

	CleanupClosePushL(mec);

    TOverridenSelectionPrefsExt* ext = new (ELeave) TOverridenSelectionPrefsExt( KLegacyNextLayerTierId, iSelectionPrefs );

    CleanupStack::PushL( ext );

    mec.AppendExtensionL( ext ); //The ownership of the extension goes to AccessPointConfig now.

    CleanupStack::Pop( ext );

	provider->AccessPointConfig().Close();

	provider->AccessPointConfig().Open(mec);

	CleanupStack::PopAndDestroy(&mec);

    CleanupStack::Pop( provider );

    provider->IncrementBlockingDestroy();

    return provider;

    }

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

// TS60ProviderSelectorFactory::NewSelectorL

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

//

MProviderSelector* TS60ProviderSelectorFactory::NewSelectorL(const Meta::SMetaData& aSelectionPreferences)

    {

    __CFLOG_VAR((KS60TierMgrTag, KS60TierMgrSubTag, _L8("S60MCPR::CS60ProviderSelectorBase::\tNewSelectorL()")));

    ASSERT(aSelectionPreferences.IsTypeOf(TSelectionPrefs::TypeId()));

    //const ESock::TSelectionPrefs& sp = static_cast<const ESock::TSelectionPrefs&>(aSelectionPreferences);

    ASimpleSelectorBase* self = NULL;

    CBase* selfCleanupItem = NULL;

    CMDBSession* dbs = CMDBSession::NewLC(KCDVersion1_2);

    // Reveal hidden or private IAP records if a licensee has chosen to protect a record

    // using one of these flags - the API to do this is public so internal components

    // have to support the use of such records.

    dbs->SetAttributeMask( ECDHidden | ECDPrivate );

    // In all cases with S60 IP TM we want to use the S60 selector.

    // This means that it's pointless to allow any other selector to run besides CSimpleS60SelectorBase

    __CFLOG_VAR((KS60TierMgrTag, KS60TierMgrSubTag, _L8("S60MCPR::TIpProviderSelectorFactory::\tNewSelectorL() - Using S60 Simple Selector")));

    CSimpleS60SelectorBase* ipSelSelf = new (ELeave) CSimpleS60SelectorBase( aSelectionPreferences );

    selfCleanupItem = ipSelSelf;

    self = ipSelSelf;

    CleanupStack::PushL( selfCleanupItem );

    self->iTierRecord = TierManagerUtils::LoadTierRecordL( TUid::Uid(KAfInet), *dbs );

    __ASSERT_DEBUG(static_cast<TUint32>(self->iTierRecord->iDefaultAccessPoint)!=0,User::Panic(KS60SelectorPanic,EExpectedAccessPointAwareSystem));

    CleanupStack::Pop( selfCleanupItem );

    CleanupStack::Pop( dbs );

    ASSERT(self->iDbs==NULL);

    self->iDbs = dbs;

    return self;

    }