/**
 * Copyright(c) 2011 Trusted Logic.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Trusted Logic nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __PKCS11_INTERNAL_H__
#define __PKCS11_INTERNAL_H__

#define CRYPTOKI_EXPORTS
#include "cryptoki.h"
#include "service_system_protocol.h"

#include "lib_object.h"
#include "lib_mutex.h"
#include "tee_client_api.h"

#include <stdlib.h>
#include <string.h>


/**
 * The magic word.
 */
#define PKCS11_SESSION_MAGIC  ( (uint32_t)0x45EF683B )

/**
 * Computes required size to fit in a 4-bytes aligned buffer (at the end)
 * If the size is a multiple of 4, just returns the size
 * Otherwise, return the size so that the (end of the buffer)+1 is 4-bytes aligned.
 */
#define PKCS11_GET_SIZE_WITH_ALIGNMENT(a)  (uint32_t)(((uint32_t)a+3) & ~3)


/**
 * The System Service UUID used by the library
 */
extern const TEEC_UUID SERVICE_UUID;

/**
 * g_sContext: the global TEEC context used by the library
 */
extern TEEC_Context  g_sContext;

void stubMutexLock(void);
void stubMutexUnlock(void);
TEEC_Result stubInitializeContext(void);
void stubFinalizeContext(void);

/** Whether the cryptoki library is initialized or not */
extern bool g_bCryptokiInitialized;

CK_RV ckInternalTeeErrorToCKError(TEEC_Result nError);

#define PKCS11_PRIMARY_SESSION_TAG    1
#define PKCS11_SECONDARY_SESSION_TAG  2

typedef struct
{
   /*
    * Magic word, must be set to {PKCS11_SESSION_MAGIC}.
    */
   uint32_t    nMagicWord;

   /* nSessionTag must be set to {PKCS11_PRIMARY_SESSION_TAG} for primary session
   *                          to {PKCS11_SECONDARY_SESSION_TAG} for secondary session */
   uint32_t    nSessionTag;

}PKCS11_SESSION_CONTEXT_HEADER, * PPKCS11_SESSION_CONTEXT_HEADER;

/**
 * The PKCS11 Primary session context
 */
typedef struct
{
   /* sHeader must be the first field of this structure */
   PKCS11_SESSION_CONTEXT_HEADER sHeader;

   /* TEEC session used for this cryptoki primary session.
      Each primary session has its own TEEC session */
   TEEC_Session sSession;
   uint32_t     hCryptoSession;

   /* Mutex to protect the table of secondary sessions */
   LIB_MUTEX sSecondarySessionTableMutex;

   /* Table of secondary sessions */
   LIB_OBJECT_TABLE_HANDLE16 sSecondarySessionTable;

} PKCS11_PRIMARY_SESSION_CONTEXT, * PPKCS11_PRIMARY_SESSION_CONTEXT;

/**
 * The PKCS11 Secondary session context
 */
typedef struct
{
   /* sHeader must be the first field of this structure */
   PKCS11_SESSION_CONTEXT_HEADER sHeader;

   /* Secondary session handle as returned by pkcs11 */
   uint32_t       hSecondaryCryptoSession;

   /* A node of the table of secondary sessions */
   LIB_OBJECT_NODE_HANDLE16 sSecondarySessionNode;

   /* pointer to the primary session */
   PKCS11_PRIMARY_SESSION_CONTEXT* pPrimarySession;

} PKCS11_SECONDARY_SESSION_CONTEXT, *PPKCS11_SECONDARY_SESSION_CONTEXT;

bool ckInternalSessionIsOpenedEx(S_HANDLE hSession, bool* pBoolIsPrimarySession);

#endif /* __PKCS11_INTERNAL_H__ */