/*

* 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:  Main handler for incoming requests

*

*/

#include "atmisccmdplugin.h"

#include "clckcommandhandler.h"

#include "cpwdcommandhandler.h"

#include "cpincommandhandler.h"

#include "cusdcommandhandler.h"

#include "cnumcommandhandler.h"

#include "cfuncommandhandler.h"

#include "cbccommandhandler.h"

#include "atmisccmdpluginconsts.h"

#include "debug.h"

// +CME error code

_LIT8(KCMEIncorrectPassword, "+CME: 16\r\n"); // Incorrect password.\r\n

_LIT8(KCMEPUKRequired, "+CME: 12\r\n"); // PUK required.\r\n

_LIT8(KCMENotAllowed, "+CME: 3\r\n"); // Operation not allowed.\r\n

_LIT8(KCMEPhoneError, "+CME: 0\r\n"); // Phone failure.\r\n

_LIT8(KCMEPhoneUnknown, "+CME: 100\r\n"); // unknown error

const TInt KErrorReplyLength = 9;  // CR+LF+"ERROR"+CR+LF

CATMiscCmdPlugin* CATMiscCmdPlugin::NewL()

    {

    CATMiscCmdPlugin* self = new (ELeave) CATMiscCmdPlugin();

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

CATMiscCmdPlugin::~CATMiscCmdPlugin()

	{

    iReplyBuffer.Close();

    delete iCLCKHandler;

    delete iCPWDHandler;

    delete iCPINHandler;

    delete iCUSDHandler;

    delete iCNUMHandler;

    delete iCFUNHandler;

    delete iCBCHandler;

    iPhone.Close();

    iTelServer.Close();

	}

CATMiscCmdPlugin::CATMiscCmdPlugin() : 

    CATExtPluginBase()

    {

    }

void CATMiscCmdPlugin::ConstructL()

    {

    TRACE_FUNC_ENTRY

    ConnectToEtelL(iTelServer, iPhone);

    iCLCKHandler = CCLCKCommandHandler::NewL(this, iCommandParser, iPhone);

    iCPWDHandler = CCPWDCommandHandler::NewL(this, iCommandParser, iPhone);

    iCUSDHandler = CCUSDCommandHandler::NewL(this, iCommandParser, iPhone);

    iCPINHandler = CCPINCommandHandler::NewL(this, iCommandParser, iPhone);

    iCNUMHandler = CCNUMCommandHandler::NewL(this, iCommandParser, iPhone, iTelServer);

    iCFUNHandler = CCFUNCommandHandler::NewL(this, iCommandParser, iPhone);

    iCBCHandler = CCBCCommandHandler::NewL(this, iCommandParser, iPhone);

    TRACE_FUNC_EXIT

   	}

/**

 * @see CATExtPluginBase::ReportConnectionName

 */

void CATMiscCmdPlugin::ReportConnectionName( const TDesC8& /*aName*/ )

    {

    TRACE_FUNC_ENTRY

    TRACE_FUNC_EXIT

    }

/**

 * @see CATExtPluginBase::IsCommandSupported

 */

TBool CATMiscCmdPlugin::IsCommandSupported( const TDesC8& aCmd )

    {

    TRACE_FUNC_ENTRY

    iHcCmd = NULL;

    iHcReply = NULL;

    iCurrentHandler = NULL;

    TBool supported = ETrue;

    Trace(KDebugPrintS, "aCmd: ", &aCmd);

    iCommandParser.ParseAtCommand(aCmd);

    Trace(KDebugPrintD, "Command: ", iCommandParser.Command());

    // TODO: check if the type is supported?

    // iCommandParser.CommandHandlerType() != TAtCommandParser::ECmdHandlerTypeUndefined

    switch (iCommandParser.Command())

        {

        case (TAtCommandParser::ECmdAtClck):

            {

            iCurrentHandler = iCLCKHandler;

            break;

            }

        case (TAtCommandParser::ECmdAtCpwd):

            {

            iCurrentHandler = iCPWDHandler;

            break;

            }

        case (TAtCommandParser::ECmdAtCpin):

            {

            iCurrentHandler = iCPINHandler;

            break;

            }

        case (TAtCommandParser::ECmdAtCusd):

            {

            iCurrentHandler = iCUSDHandler;

            break;

            }   

        case (TAtCommandParser::ECmdAtCnum):

            {

            iCurrentHandler = iCNUMHandler;

            break;

            }

        case (TAtCommandParser::ECmdAtCfun):

            {

            iCurrentHandler = iCFUNHandler;

            break;

            }

        case (TAtCommandParser::ECmdAtCbc):

            {

            iCurrentHandler = iCBCHandler;

            break;

            }

        case (TAtCommandParser::EUnknown):

        default:

            {

            supported = EFalse;

            break;

            }

        }

    Trace(KDebugPrintD, "supported: ", supported);

    TRACE_FUNC_EXIT

    return supported;

	}

/**

 * @see CATExtPluginBase::HandleCommand

 */

void CATMiscCmdPlugin::HandleCommand( const TDesC8& aCmd,

                                     RBuf8& aReply,

                                     TBool aReplyNeeded )

	{

	TRACE_FUNC_ENTRY

	if (iCurrentHandler != NULL)

	    {

	    iHcCmd = &aCmd;

	    iHcReply = &aReply;

	    iCurrentHandler->HandleCommand( aCmd, aReply, aReplyNeeded );

	    }

	TRACE_FUNC_EXIT

    }

/**

 * @see CATExtPluginBase::HandleCommandCancel

 */

void CATMiscCmdPlugin::HandleCommandCancel()

    {

    TRACE_FUNC_ENTRY

    if (iCurrentHandler != NULL)

	    {

	    iCurrentHandler->HandleCommandCancel();

	    }

	TRACE_FUNC_EXIT

    }

/**

 * @see CATExtPluginBase::NextReplyPartLength

 */

TInt CATMiscCmdPlugin::NextReplyPartLength()

    {

    TRACE_FUNC_ENTRY

    TInt length = iReplyBuffer.Length();

    if ( length >= KDefaultCmdBufLength )

        {

        length = KDefaultCmdBufLength;

        }

    TRACE_FUNC_EXIT

    return length;

    }

/**

 * @see CATExtPluginBase::GetNextPartOfReply

 */

TInt CATMiscCmdPlugin::GetNextPartOfReply( RBuf8& aNextReply )

    {

    TRACE_FUNC_ENTRY

    TInt retVal = CreatePartOfReply( aNextReply );

    TRACE_FUNC_EXIT

    return retVal;

    }

/**

 * @see CATExtPluginBase::ReceiveUnsolicitedResult

 */

void CATMiscCmdPlugin::ReceiveUnsolicitedResult()

    {

    TRACE_FUNC_ENTRY

    TRACE_FUNC_EXIT

    }

/**

 * @see CATExtPluginBase::ReceiveUnsolicitedResultCancel

 */

void CATMiscCmdPlugin::ReceiveUnsolicitedResultCancel()

    {

    TRACE_FUNC_ENTRY

    TRACE_FUNC_EXIT

    }

/**

 * @see CATExtPluginBase::ReportNvramStatusChange

 */

void CATMiscCmdPlugin::ReportNvramStatusChange( const TDesC8& /*aNvram*/ )

    {

    TRACE_FUNC_ENTRY

    TRACE_FUNC_EXIT

    }

/**

 * @see CATExtPluginBase::ReportExternalHandleCommandError

 */

void CATMiscCmdPlugin::ReportExternalHandleCommandError()

    {

    TRACE_FUNC_ENTRY

    TRACE_FUNC_EXIT

    }

/**

 * Creates part of reply from the global reply buffer to the destination

 * buffer. Used with APIs which need the next part of reply in multipart

 * reply requests.

 *

 * @param aBuffer Destination buffer; the next part of reply is stored to

 *                   this buffer.

 * @return None

 */

TInt CATMiscCmdPlugin::CreatePartOfReply( RBuf8& aBuffer )

    {

    TRACE_FUNC_ENTRY

    TInt ret = KErrNone;

    TInt partLength;

    if ( iReplyBuffer.Length() <= 0 )

        {

        ret = KErrGeneral;

        }

    else

        {

        partLength = NextReplyPartLength();

        if ( iReplyBuffer.Length() < partLength )

            {

            ret =  KErrNotFound;

            }

        }

    Trace(KDebugPrintD, "ret: ", ret);

    if (ret == KErrNone)

        {

        aBuffer.Create( iReplyBuffer, partLength );

        iReplyBuffer.Delete( 0, partLength );

        if ( iReplyBuffer.Length() == 0 )

            {

            iReplyBuffer.Close();

            }

        }

    TRACE_FUNC_EXIT

    return ret;

    }

/**

 * @see MATMiscCmdPlugin::CreateReplyAndComplete

 */

TInt CATMiscCmdPlugin::CreateReplyAndComplete( TATExtensionReplyType aReplyType,

                                              const TDesC8& aSrcBuffer,

											  TInt aError )

    {

    TRACE_FUNC_ENTRY

    iReplyBuffer.Close();

    Trace(KDebugPrintD, "aError: ", aError);

    if ( aError != KErrNone )

        {

        HandleCommandCompleted( aError, EReplyTypeUndefined );

        iHcCmd = NULL;

        iHcReply = NULL;

        iCurrentHandler = NULL;

        TRACE_FUNC_EXIT

        return KErrNone;

        }

    Trace(KDebugPrintS, "iHcReply: ", &iHcReply);

    if (iHcReply == NULL)

        {

        TRACE_FUNC_EXIT

        return KErrGeneral;

        }

    Trace(KDebugPrintD, "iQuietMode: ", iQuietMode);

    if ( iQuietMode )

        {

        iReplyBuffer.Create( KNullDesC8 );

        }

    else

        {

        iReplyBuffer.Create( aSrcBuffer );

        }

    Trace(KDebugPrintD, "aReplyType: ", aReplyType);

    switch ( aReplyType )

        {

        case EReplyTypeOther:

            break;

        case EReplyTypeOk:

            CreateOkOrErrorReply( iReplyBuffer, ETrue );

            break;

        case EReplyTypeError:

            CreateOkOrErrorReply( iReplyBuffer, EFalse );

            break;

        default:

            TRACE_FUNC_EXIT

            return KErrGeneral;

        }

    CreatePartOfReply( *iHcReply );

    HandleCommandCompleted( KErrNone, aReplyType );

    iHcCmd = NULL;

    iHcReply = NULL;

    iCurrentHandler = NULL;

    TRACE_FUNC_EXIT

    return KErrNone;

    }

/**

 * @see MATMiscCmdPlugin::CreateOkOrErrorReply

 */

TInt CATMiscCmdPlugin::CreateOkOrErrorReply( RBuf8& aReplyBuffer,

                                            TBool aOkReply )

    {

    TRACE_FUNC_ENTRY

    _LIT8( KErrorReplyVerbose, "ERROR" );

    _LIT8( KOkReplyVerbose,    "OK" );

    _LIT8( KErrorReplyNumeric, "4" );

    _LIT8( KOkReplyNumeric,    "0" );

    TBuf8<KErrorReplyLength> replyBuffer;

    if ( iVerboseMode )

        {

        replyBuffer.Append( iCarriageReturn );

        replyBuffer.Append( iLineFeed );

        if ( aOkReply )

            {

            replyBuffer.Append( KOkReplyVerbose );

            }

        else

            {

            replyBuffer.Append( KErrorReplyVerbose );

            }

        replyBuffer.Append( iCarriageReturn );

        replyBuffer.Append( iLineFeed );

        }

    else

        {

        if ( aOkReply )

            {

            replyBuffer.Append( KOkReplyNumeric );

            }

        else

            {

            replyBuffer.Append( KErrorReplyNumeric );

            }

        replyBuffer.Append( iCarriageReturn );

        }

    aReplyBuffer.ReAlloc(aReplyBuffer.Length() + replyBuffer.Length());

    aReplyBuffer.Append( replyBuffer );

    TRACE_FUNC_EXIT

    return KErrNone;

    }

/**

 * @see MATMiscCmdPlugin::GetCharacterValue

 */

TInt CATMiscCmdPlugin::GetCharacterValue( TCharacterTypes aCharType,

                                         TChar& aChar )

    {

    TRACE_FUNC_ENTRY

    TInt retVal = KErrNone;

    switch ( aCharType )

        {

        case ECharTypeCR:

            aChar = iCarriageReturn;

            break;

        case ECharTypeLF:

            aChar = iLineFeed;

            break;

        case ECharTypeBS:

            aChar = iBackspace;

            break;

        default:

            retVal = KErrNotFound;

            break;

        }

    TRACE_FUNC_EXIT

    return retVal;

    }

/**

 * @see MATMiscCmdPlugin::GetModeValue

 */

TInt CATMiscCmdPlugin::GetModeValue( TModeTypes aModeType, TBool& aMode )

    {

    TRACE_FUNC_ENTRY

    TInt retVal = KErrNone;

    switch ( aModeType )

        {

        case EModeTypeQuiet:

            aMode = iQuietMode;

            break;

        case EModeTypeVerbose:

            aMode = iVerboseMode;

            break;

        default:

            retVal = KErrNotFound;

            break;

        }

    TRACE_FUNC_EXIT

    return retVal;

    }

void CATMiscCmdPlugin::CreateCMEReplyAndComplete(TInt aError)

    {

    TRACE_FUNC_ENTRY

    // TODO should return CME error according to CME state (and quiet mode?)

    RBuf8 response;

    response.Create(KDefaultCmdBufLength);

    // log error code

    response.AppendNum(aError);

    Trace(KDebugPrintD, "complete with error ", &response);

    // return error code to AT client

    response.Zero(); // reuse RBuf

    response.Append(KCRLF);

    switch(aError)

        {

        case KErrGsm0707IncorrectPassword:

        case KErrAccessDenied:

            {    

            // code was entered erroneously

            response.Append(KCMEIncorrectPassword);

            break;

            }    

        case KErrGsmSSPasswordAttemptsViolation:

        case KErrLocked:

            {

            // Pin blocked 

            response.Append(KCMEPUKRequired);

            break;

            }

        case KErrGsm0707OperationNotAllowed:

            {

            // not allowed with this sim

            response.Append(KCMENotAllowed);

            break;

            }

        case KErrUnknown:

            {

            // unknown error

            response.Append(KCMEPhoneUnknown);

            break;

            }

        default:

            response.Append(KCMEPhoneError);

        }

    CreateReplyAndComplete( EReplyTypeError, response );

    response.Close();

    TRACE_FUNC_EXIT

    }

TInt CATMiscCmdPlugin::HandleUnsolicitedRequest(const TDesC8& aAT )

    {

    return SendUnsolicitedResult(aAT);

    }

void CATMiscCmdPlugin::ConnectToEtelL(RTelServer& aTelServer, RMobilePhone& aPhone)

    {

    TRACE_FUNC_ENTRY

    User::LeaveIfError(aTelServer.Connect());

    // get the name of the first available phone

    TInt phoneCount;

    RTelServer::TPhoneInfo info;

    User::LeaveIfError(aTelServer.EnumeratePhones(phoneCount));  

    if (phoneCount < 1)

        {

        User::Leave(KErrNotFound); // TODO: appropriate error code

        }

    User::LeaveIfError(aTelServer.GetPhoneInfo(0, info));

    User::LeaveIfError(aPhone.Open(aTelServer, info.iName));

    TRACE_FUNC_EXIT