/*
 * Amazon FreeRTOS PKCS #11 PAL V1.0.0
 * Copyright (C) 2018 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * http://aws.amazon.com/freertos
 * http://www.FreeRTOS.org
 */

/**
 * @file aws_pkcs11_pal.c
 * @brief Device specific helpers for PKCS11 Interface.
 */

/* Amazon FreeRTOS Includes. */
#include "aws_pkcs11.h"
#include "FreeRTOS.h"

/* C runtime includes. */
#include <stdio.h>
#include <string.h>


/**
* @brief Writes a file to local storage.
*
* Port-specific file write for crytographic information.
*
* @param[in] pxLabel       Label of the object to be saved.
* @param[in] pucData       Data buffer to be written to file
* @param[in] ulDataSize    Size (in bytes) of data to be saved.
*
* @return The file handle of the object that was stored.
*/
CK_OBJECT_HANDLE PKCS11_PAL_SaveObject( CK_ATTRIBUTE_PTR pxLabel,
    uint8_t * pucData,
    uint32_t ulDataSize )
{
    CK_OBJECT_HANDLE xHandle = 0;
    return xHandle;
}

/**
* @brief Translates a PKCS #11 label into an object handle.
*
* Port-specific object handle retrieval.
*
*
* @param[in] pLabel         Pointer to the label of the object
*                           who's handle should be found.
* @param[in] usLength       The length of the label, in bytes.
*
* @return The object handle if operation was successful.
* Returns eInvalidHandle if unsuccessful.
*/
CK_OBJECT_HANDLE PKCS11_PAL_FindObject( uint8_t * pLabel,
    uint8_t usLength )
{
    CK_OBJECT_HANDLE xHandle = 0;
    return xHandle;
}

/**
* @brief Gets the value of an object in storage, by handle.
*
* Port-specific file access for cryptographic information.
*
* This call dynamically allocates the buffer which object value
* data is copied into.  PKCS11_PAL_GetObjectValueCleanup()
* should be called after each use to free the dynamically allocated
* buffer.
*
* @sa PKCS11_PAL_GetObjectValueCleanup
*
* @param[in] pcFileName    The name of the file to be read.
* @param[out] ppucData     Pointer to buffer for file data.
* @param[out] pulDataSize  Size (in bytes) of data located in file.
* @param[out] pIsPrivate   Boolean indicating if value is private (CK_TRUE)
*                          or exportable (CK_FALSE)
*
* @return CKR_OK if operation was successful.  CKR_KEY_HANDLE_INVALID if
* no such object handle was found, CKR_DEVICE_MEMORY if memory for
* buffer could not be allocated, CKR_FUNCTION_FAILED for device driver
* error.
*/
CK_RV PKCS11_PAL_GetObjectValue( CK_OBJECT_HANDLE xHandle,
    uint8_t ** ppucData,
    uint32_t * pulDataSize,
    CK_BBOOL * pIsPrivate )
{
    CK_RV xReturn = CKR_OK;
    return xReturn;
}


/**
* @brief Cleanup after PKCS11_GetObjectValue().
*
* @param[in] pucData       The buffer to free.
*                          (*ppucData from PKCS11_PAL_GetObjectValue())
* @param[in] ulDataSize    The length of the buffer to free.
*                          (*pulDataSize from PKCS11_PAL_GetObjectValue())
*/
void PKCS11_PAL_GetObjectValueCleanup( uint8_t * pucData,
    uint32_t ulDataSize )
{
    
}

/*-----------------------------------------------------------*/

int mbedtls_hardware_poll( void * data,
                           unsigned char * output,
                           size_t len,
                           size_t * olen )
{
    /* FIX ME. */
    return 0;
}