/*

* Copyright (c) 2005-2007 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:   Provide interface for the client requestin availability class.

*

*/

#include "musavadefaultoptionhandler.h"

#include "musavasharedobject.h"

#include "muslogger.h"

#include "musavasip.h"

#include "musavasettingsimp.h"

#include "sipservertransaction.h"

#include "mussettings.h"

#include "musavacapability.h"

#include "musavacapabilitycontext.h"

#include "musavanetworkmodestatus.h"

#include <sipstrings.h>

#include <siptransactionbase.h>

#include <sipheaderbase.h>

#include <sipservertransaction.h>

#include <sipcontenttypeheader.h>

#include <sdpcodecstringpool.h>

#include <sipresponseelements.h>

#include <siprequestelements.h>

#include <sipmessageelements.h>

#include <sipconnection.h>

#include <sipcontactheader.h>

#include <sdpdocument.h>

#include <sdpattributefield.h>

#include <sdpmediafield.h>

#include <sdpconnectionfield.h>

#include <sdporiginfield.h>

#include <sdprtpmapvalue.h>

#include <sdpfmtattributefield.h>

#include <e32math.h>

#include <uriutils.h>

const TInt KMaxNumAsStringSize = 16;

_LIT8( KMUSAVAOriginFieldUser, "-");

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

// Symbian two-phase constructor

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

//

CMusAvaDefaultOptionHandler* CMusAvaDefaultOptionHandler::NewL(

    MMusAvaAvailabilityObserver& aObserver,

    CMusAvaSettingsImp&  aConcreteSettings  )

    {

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::NewL()" )

    CMusAvaDefaultOptionHandler* self = CMusAvaDefaultOptionHandler::NewLC(

        aObserver,

        aConcreteSettings );

    CleanupStack::Pop( self );

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::NewL()" )

    return self;

    }

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

//  Two-phased constructor.

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

//

CMusAvaDefaultOptionHandler* CMusAvaDefaultOptionHandler::NewLC(

    MMusAvaAvailabilityObserver& aObserver,

    CMusAvaSettingsImp& aConcreteSettings  )

    {

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::NewLC()" )

    CMusAvaDefaultOptionHandler* self = new( ELeave ) 

        CMusAvaDefaultOptionHandler( aObserver, aConcreteSettings );

    CleanupStack::PushL( self );

    self->ConstructL();

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::NewLC()" )

    return self;

    }

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

//  Constructor.

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

//

CMusAvaDefaultOptionHandler::CMusAvaDefaultOptionHandler(

                        MMusAvaAvailabilityObserver& aObserver,

                        CMusAvaSettingsImp& aConcreteSettings  )

    :CMusAvaAvailability( aObserver ),

    iSettings( aConcreteSettings )

    {

    }

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

// Symbian 2nd phase constructor can leave.

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

//

void CMusAvaDefaultOptionHandler::ConstructL()

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::ConstructL()" )

    iSharedObj = CMusAvaSharedObject::GetSingletonL();

    iSharedObj->MusAvaSip().AddAdapterL( 

                                    ( MMusAvaSipConnectionAdapter& ) *this );

    iSharedObj->MusAvaSip().AddAdapterL( ( MMusAvaSipAdapter& ) *this );

    SIPStrings::OpenL();

    SdpCodecStringPool::OpenL();

    iOperatorVariant = MultimediaSharingSettings::OperatorVariantSettingL(); 

    // set this only for static availability modules

    iState = MMusAvaObserver::EMusAvaStatusAvailable ; 

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::ConstructL()" )

    }

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

//  Destructor.

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

//

CMusAvaDefaultOptionHandler::~CMusAvaDefaultOptionHandler()

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::\

        ~CMusAvaDefaultOptionHandler()" )

    if ( iSharedObj )        

        {

        iSharedObj->DeleteSingleton();    

        }

    SIPStrings::Close();

    SdpCodecStringPool::Close();

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::\

        ~CMusAvaDefaultOptionHandler()" )

    }

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

//  A SIP request outside a dialog has been received from the network.

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

//

TInt CMusAvaDefaultOptionHandler::IncomingRequest(

    CSIPServerTransaction* aTransaction )

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::\

        IncomingRequest()" )

    TInt err = KErrNotFound;

    if( aTransaction->Type() == SIPStrings::StringF( SipStrConsts::EOptions ) 

        //&& !Available( MMusAvaObserver::EMusAvaOptionHandler ) 

        )

        {

        TRAP( err, IncomingOptionRequestL( aTransaction ) )

	    if( !err )

	    	{

	    	delete aTransaction;	

	    	}

        }

    else

        {

        MUS_LOG( "mus: [MUSAVA]  Not OPTIONS request or not handled in defaultOptionHandler" )

        }

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::\

            IncomingRequest()" )

    return err;

    }

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

//  Starts the loopy execution.

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

//

void CMusAvaDefaultOptionHandler::DoExecuteL()

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::\

        ExecutePatternL()" )

    // set status available

    SetState( MMusAvaObserver::EMusAvaStatusAvailable );

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::\

        ExecutePatternL()" )

    }

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

// CMusAvaDefaultOptionHandler::Name

//

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

//

MMusAvaObserver::TAvailabilityName CMusAvaDefaultOptionHandler::Name()

    {

    MUS_LOG( "mus: [MUSAVA]  CMusAvaDefaultOptionHandler::Name()" )

    return MMusAvaObserver::EMusAvaDefaultOptionHandler;

    }

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

// CMusAvaDefaultOptionHandler::IncomingRequest

//

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

//

TInt CMusAvaDefaultOptionHandler::IncomingRequest(

                                TUint32 aIapId,

                                CSIPServerTransaction* aTransaction )

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::\

        IncomingRequest()" )

    MUS_LOG1( "mus: [MUSAVA]    Iap ( %d )", aIapId )

    TInt err = KErrNotFound;

    CSIPConnection* connection = NULL;

    if( aTransaction->Type() == SIPStrings::StringF( SipStrConsts::EOptions ) 

        && !Available( MMusAvaObserver::EMusAvaOptionHandler ) )

        {

       	MUS_LOG( "mus: [MUSAVA]  create CSIPConnection" )

       	TRAP( err, connection = CSIPConnection::NewL( 

       	    iSharedObj->MusAvaSip().Sip(),

       	    aIapId,

       	    iSharedObj->MusAvaSip().ConnectionObserver() ) );

        if( err != KErrNone )

            {

            MUS_LOG1( "mus: [MUSAVA]    CSIPConnection error ( %d )", err )

            }

        else

            {

    	    MUS_LOG( "mus: [MUSAVA]  create CSIPConnection" )

    	    TRAP_IGNORE( IncomingOptionRequestL ( aTransaction ) ) 

            delete connection;

            delete aTransaction;

            }

       	}

    else

        {

        MUS_LOG( "mus: [MUSAVA]  Not OPTIONS request or not handled in defaultOptionHandler" )

       	}

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::\

        IncomingRequest()" )

    return err;

    }

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

// CMusAvaDefaultOptionHandler::TimedOut

//

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

//

TInt CMusAvaDefaultOptionHandler::TimedOut(CSIPServerTransaction& 

    /*aTransaction*/ )

    {

    MUS_LOG( "mus: [MUSAVA]  CMusAvaDefaultOptionHandler::ConstructL()" )

    return KErrNotSupported;

    }

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

// CMusAvaDefaultOptionHandler::IncomingOptionRequestL

//

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

//

void CMusAvaDefaultOptionHandler::IncomingOptionRequestL(

                                CSIPServerTransaction* aTransaction )

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::\

        IncomingOptionRequestL()" )

    MusSettingsKeys::TActivation activation = 

                            MultimediaSharingSettings::ActivationSettingL();

    if ( activation == MusSettingsKeys::ENever )

    	{

        MUS_LOG( "mus: [MUSAVA]  Sending 603 Decline" )

        NoCapabilityResponseL( aTransaction, 

                               KMUSAVASIPDecline, 

                               SipStrConsts::EPhraseDecline );    		        	        

    	}

   	else

   		{                        

        MUS_LOG( "mus: [MUSAVA]  Sending 480 Temporarily Unavilable" )

        NoCapabilityResponseL( aTransaction, 

                               KMUSAVASIPTemporarilyUnavailable, 

                               SipStrConsts::EPhraseTemporarilyNotAvailable );	        

        }

    MUS_LOG( "mus: [MUSAVA]  <- \

        CMusAvaDefaultOptionHandler::IncomingOptionRequest()" )

    }

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

// Send Response to reques.

//

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

void CMusAvaDefaultOptionHandler::ResponseL(

                                CSIPResponseElements* aResponseElements,

                                CSIPServerTransaction* aTransaction )

    {

    MUS_LOG( "mus: [MUSAVA]  -> CMusAvaDefaultOptionHandler::ResponseL" )

    if ( ( aTransaction->StateL() == CSIPTransactionBase::ETrying ||

         aTransaction->StateL() == CSIPTransactionBase::EProceeding ) &&

         aTransaction->ResponseAllowed() )

        {

        aTransaction->SendResponseL( aResponseElements );

        MUS_LOG( "   Send response" )

        MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::ResponseL" )

        }

    else

        {

        MUS_LOG( "mus: [MUSAVA]  Not allow to sent response " )

        MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::ResponseL" )

        User::Leave( KErrNotReady );

        }

    }

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

// Send response to request.

//

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

void CMusAvaDefaultOptionHandler::NoCapabilityResponseL( 

                                        CSIPServerTransaction* aTransaction,

                                        TUint aStatusCode,

                                        SipStrConsts::TStrings aReason )

    {

    MUS_LOG( "mus: [MUSAVA] -> CMusAvaDefaultOptionHandler::SendResponseL()" )

    MUS_LOG( "mus: [MUSAVA]  Create response elements " )

    CSIPResponseElements* respElem = NULL;

	if( iOperatorVariant == MusSettingsKeys::EOperatorSpecific )

		{

		MUS_LOG( "mus: [MUSAVA]  Operator Specific response" )

	    respElem = CreateResponseL( *aTransaction );

	    CleanupStack::PushL( respElem );

		}

	else

		{

		MUS_LOG( "mus: [MUSAVA]	Standard response" )

		RStringF reasonPhrase =

	        SIPStrings::StringF( aReason );

	    respElem =

		    CSIPResponseElements::NewLC( aStatusCode, reasonPhrase );

		}	

    ResponseL( respElem, aTransaction );

    MUS_LOG( "mus: [MUSAVA]  Response sent " )

    CleanupStack::Pop( respElem );

    MUS_LOG( "mus: [MUSAVA]  <- CMusAvaDefaultOptionHandler::SendResponseL()" )

    }

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

// CMusAvaDefaultOptionHandler::CreateResponseL

//

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

//

CSIPResponseElements* CMusAvaDefaultOptionHandler::CreateResponseL( 

                                        CSIPServerTransaction& aTransaction )

    {

    HBufC8* sdpBody = NULL;

    CSIPResponseElements* respElem =

        CSIPResponseElements::NewLC( KMUSAVASIP200,

        SIPStrings::StringF(SipStrConsts::EPhraseOk) );

    RPointerArray<CSIPHeaderBase> responseHeaders;

    CSIPHeaderBase::PushLC( &responseHeaders );

    const CUri8& uri = aTransaction.RequestElements()->RemoteUri();

    CSIPContactHeader* contact = MusAvaCapabilityContext::ContactHeaderLC( 

            uri, SIPStrings::StringF( SipStrConsts::EEmpty ) );

    responseHeaders.AppendL( contact );

    CleanupStack::Pop( contact );

    CSIPMessageElements& messageElements = respElem->MessageElements();

    messageElements.SetUserHeadersL( responseHeaders );

    CleanupStack::Pop( &responseHeaders );

    CSIPContentTypeHeader* contenType =

        CSIPContentTypeHeader::NewLC( SIPStrings::StringF(

            SipStrConsts::EApplication).DesC(), 

            KMUSAVASIPMediaSubTypeSDP );

    // Set content

    CSdpDocument* sdpDocument = CreateSDPL( aTransaction );

    CleanupStack::PushL( sdpDocument );

    sdpBody = ToTextL( *sdpDocument );

    CleanupStack::PopAndDestroy( sdpDocument );

    CleanupStack::PushL( sdpBody );

    messageElements.SetContentL( sdpBody, contenType );

    CleanupStack::Pop( sdpBody );

    CleanupStack::Pop( contenType );

    CleanupStack::Pop( respElem );

   	return respElem;

    }

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

// Create SDP response.

//

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

CSdpDocument* CMusAvaDefaultOptionHandler::CreateSDPL( 

                                    CSIPServerTransaction& aTransaction  )

    {

	MUS_LOG( "mus: [MUSAVA] -> CMusAvaDefaultOptionHandler::CreateSDPL" )

    // Origin field

	TPtrC8 localHost;

	RStringF hostType;

	RStringF netType = SDPStringL( SdpCodecStringConstants::ENetType );

	CSdpDocument* sdpDocument = CSdpDocument::NewLC();

	LocalHostL( aTransaction,localHost,hostType);

	CSdpOriginField* originField = CreateOriginFieldL(localHost,hostType);

	sdpDocument->SetOriginField(originField);

	// Connection field

	CSdpConnectionField* connectionField =

        CSdpConnectionField::NewL( netType, hostType, localHost );

    sdpDocument->SetConnectionField( connectionField );

    MUS_LOG( "mus: [MUSAVA] Adding application attribute to SDP" )

    //application

    CSdpAttributeField* application =

        CSdpAttributeField::NewLC( 

            SDPStringL( SdpCodecStringConstants::EMediaApplication ),

            KCapabilitySwisApplication );

    sdpDocument->AttributeFields().AppendL( application );

    CleanupStack::Pop( application );

    MUS_LOG( "mus: [MUSAVA] Adding type attribute to SDP" )

    //type

    RStringF typeStr = SDPStringL( KCapabilitySDPAttributeNameType );

    CleanupClosePushL( typeStr );

    CSdpAttributeField* type =

        CSdpAttributeField::NewL( typeStr, KCapabilitySDPAttributeType );

    CleanupStack::PopAndDestroy();//typeStr

    CleanupStack::PushL( type );

    sdpDocument->AttributeFields().AppendL( type );

    CleanupStack::Pop( type );

    // Fast startup mode

    CMusAvaCapability::AddFastModeL( *sdpDocument );

    MUS_LOG( "mus: [MUSAVA] Adding media line to SDP" )

    //media line

    CSdpMediaField* mediaLine =

        MediaLineLC( SDPStringL( SdpCodecStringConstants::EMediaVideo ),

                     KCapabilitySwisFormatList );

    //rtpmap

    MUS_LOG( "mus: [MUSAVA] Adding rtpmap to SDP" )

    //adding H.264 codec to SDP

    CSdpFmtAttributeField* rtpMapH264 = 

        RtpMapLineLC( KCapabilitySDPAttributeCodecH264,

                    KCapabilitySDPAttributePayloadTypeH264,

                    KCapabilitySDPAttributeClockrate ); 

    mediaLine->FormatAttributeFields().AppendL( rtpMapH264 );

    CleanupStack::Pop( rtpMapH264 );

    //H.263 codec

    CSdpFmtAttributeField* rtpMapH263 = RtpMapLineLC( 

                                        KCapabilitySDPAttributeCodecH263,

                                        KCapabilitySDPAttributePayloadType,

                                        KCapabilitySDPAttributeClockrate );

    mediaLine->FormatAttributeFields().AppendL( rtpMapH263 );

    CleanupStack::Pop( rtpMapH263 );

    sdpDocument->MediaFields().AppendL( mediaLine );

    CleanupStack::Pop( mediaLine );

	CleanupStack::Pop( sdpDocument );

    MUS_LOG( "mus: [MUSAVA] <- CMusAvaDefaultOptionHandler::CreateSDPL" )

    return sdpDocument;

	}

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

// CMusAvaDefaultOptionHandler::CreateOriginFieldL

//

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

//

CSdpOriginField* CMusAvaDefaultOptionHandler::CreateOriginFieldL(

    const TDesC8& aLocalHost,

    const RStringF& aHostType) const

    {

    #ifdef UNIT_TESTING

    TInt64 sessionID = 452027953;

#else

    TTime now;

    now.UniversalTime();

    TInt64 rand = now.Int64();

    TInt64 sessionID = Math::Rand( rand );

#endif

    return CSdpOriginField::NewL( 

                            KMUSAVAOriginFieldUser,

                            sessionID,

                            sessionID,

                            SDPStringL( SdpCodecStringConstants::ENetType ),

                            aHostType,

                            aLocalHost);

    }

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

// CMusAvaDefaultOptionHandler::LocalHostL

//

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

//

void CMusAvaDefaultOptionHandler::LocalHostL(

                                    const CSIPServerTransaction& aRequest,

                                    TPtrC8& aLocalHost,

                                    RStringF& aHostType )

    {

    RStringPool strPool = SdpCodecStringPool::StringPoolL();

    const CUri8& uri = aRequest.RequestElements()->RemoteUri();

    aLocalHost.Set( uri.Uri().Extract( EUriHost ) );