C / C++ / MFC

Knight Rider wrote:

I am designing a system.

DRIVE_CDROM  = 5<br />
DRIVE_FIXED  = 3<br />
DRIVE_RAMDISK  = 6<br />
DRIVE_REMOTE  = 4<br />
DRIVE_REMOVABLE  = 2

problemfixer wrote:

In my application, i am getting an exception...

DavidCrow wrote:

When?

Robert Palma Jr. wrote:

Any help would be very much appreciated.

Robert Palma Jr. wrote:

The problem is with Visual Studio VisC++ 6.0 environment itself.

DWORD CSSLTLSLayer::Send(IN OVERLAPPED *pOverlapped,
                         IN WSABUF *pBuffer,
                         OUT PDWORD pdwWasSend)
{
    size_t iBuffered = BIO_write(m_pSSLBIO, pBuffer->buf, pBuffer->len);

    BIO_flush(m_pSSLBIO);
    iBuffered = (int)BIO_ctrl_pending(m_pNetworkBIO);

        if (iBuffered <= 0){
            return(WSA_IO_PENDING);
        }

    m_vcLayeredBuffer.clear();
    m_vcLayeredBuffer.resize(iBuffered);

    iBuffered = BIO_read(m_pNetworkBIO,
                         &m_vcLayeredBuffer.front(),
                         (int)iBuffered);

    pBuffer->buf = &m_vcLayeredBuffer.front();
    pBuffer->len = (u_long)m_vcLayeredBuffer.size();

    //Method of parent class which only send message as WSASend()
    DWORD dwStatus = __super::Send(pOverlapped, pBuffer, pdwWasSend);

    return(dwStatus);
}

DWORD CSSLTLSLayer::Receive(IN OVERLAPPED *pOverlapped,
                            IN WSABUF *pBuffer,
                            OUT PDWORD pdwWasRecv)
{
        if (!m_bKEXed){
            this->Handshake();
            this->InitBIOAbstractions();
            return 0;
        }

    //Receive method in parent class only do WSARecv()
    DWORD dwRet = __super::Receive(pOverlapped, pBuffer, pdwWasRecv);

    BIO_write(m_pNetworkBIO, pBuffer->buf, *pdwWasRecv);
    BIO_flush(m_pNetworkBIO);

    size_t iBuffered = BIO_ctrl_pending(m_pSSLBIO);

        if (iBuffered <= 0){
            return(WSA_IO_PENDING);
        }

    m_vcLayeredBuffer.clear();
    m_vcLayeredBuffer.resize(iBuffered);
    iBuffered = BIO_read(m_pSSLBIO, &m_vcLayeredBuffer.front(), (int)iBuffered);

    pBuffer->buf = &m_vcLayeredBuffer.front();
    pBuffer->len = (u_long)m_vcLayeredBuffer.size();

    return(dwRet);
}

void CSSLTLSLayer::Handshake(void){

        if (!m_bKEXed && m_pSSL){
            SSL_set_fd(m_pSSL, (int)m_Socket);
            SSL_set_accept_state(m_pSSL);
            SSL_do_handshake(m_pSSL);
            m_bKEXed = true;
        }

    return;
}