/* wc_port.h
 *
 * Copyright (C) 2006-2016 wolfSSL Inc.
 *
 * This file is part of wolfSSL.
 *
 * wolfSSL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * wolfSSL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
 */



#ifndef WOLF_CRYPT_PORT_H
#define WOLF_CRYPT_PORT_H

#include <wolfssl/wolfcrypt/visibility.h>

#ifdef __cplusplus
    extern "C" {
#endif


#ifdef USE_WINDOWS_API
    #ifdef WOLFSSL_GAME_BUILD
        #include "system/xtl.h"
    #else
        #ifndef WIN32_LEAN_AND_MEAN
            #define WIN32_LEAN_AND_MEAN
        #endif
        #ifndef WOLFSSL_SGX
            #if defined(_WIN32_WCE) || defined(WIN32_LEAN_AND_MEAN)
                /* On WinCE winsock2.h must be included before windows.h */
                #include <winsock2.h>
            #endif
            #include <windows.h>
        #endif /* WOLFSSL_SGX */
    #endif
#elif defined(THREADX)
    #ifndef SINGLE_THREADED
        #include "tx_api.h"
    #endif
#elif defined(MICRIUM)
    /* do nothing, just don't pick Unix */
#elif defined(FREERTOS) || defined(FREERTOS_TCP) || defined(WOLFSSL_SAFERTOS)
    /* do nothing */
#elif defined(EBSNET)
    /* do nothing */
#elif defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
    /* do nothing */
#elif defined(FREESCALE_FREE_RTOS)
    #include "fsl_os_abstraction.h"
#elif defined(WOLFSSL_uITRON4)
    #include "stddef.h"
    #include "kernel.h"
#elif  defined(WOLFSSL_uTKERNEL2)
    #include "tk/tkernel.h"
#elif defined(WOLFSSL_MDK_ARM)
    #if defined(WOLFSSL_MDK5)
        #include "cmsis_os.h"
    #else
        #include <rtl.h>
    #endif
#elif defined(WOLFSSL_CMSIS_RTOS)
    #include "cmsis_os.h"
#elif defined(WOLFSSL_TIRTOS)
    #include <ti/sysbios/BIOS.h>
    #include <ti/sysbios/knl/Semaphore.h>
#elif defined(WOLFSSL_FROSTED)
    #include <semaphore.h>
#elif defined(INTIME_RTOS)
    #include <rt.h>
    #include <io.h>
#else
    #ifndef SINGLE_THREADED
        #define WOLFSSL_PTHREADS
        #include <pthread.h>
    #endif
    #if defined(OPENSSL_EXTRA) || defined(GOAHEAD_WS)
        #include <unistd.h>      /* for close of BIO */
    #endif
#endif

/* For FIPS keep the function names the same */
#ifdef HAVE_FIPS
#define wc_InitMutex   InitMutex
#define wc_FreeMutex   FreeMutex
#define wc_LockMutex   LockMutex
#define wc_UnLockMutex UnLockMutex
#endif /* HAVE_FIPS */

#ifdef SINGLE_THREADED
    typedef int wolfSSL_Mutex;
#else /* MULTI_THREADED */
    /* FREERTOS comes first to enable use of FreeRTOS Windows simulator only */
    #if defined(FREERTOS)
        typedef xSemaphoreHandle wolfSSL_Mutex;
    #elif defined(FREERTOS_TCP)
        #include "FreeRTOS.h"
        #include "semphr.h"
		typedef SemaphoreHandle_t  wolfSSL_Mutex;
    #elif defined(WOLFSSL_SAFERTOS)
        typedef struct wolfSSL_Mutex {
            signed char mutexBuffer[portQUEUE_OVERHEAD_BYTES];
            xSemaphoreHandle mutex;
        } wolfSSL_Mutex;
    #elif defined(USE_WINDOWS_API)
        typedef CRITICAL_SECTION wolfSSL_Mutex;
    #elif defined(WOLFSSL_PTHREADS)
        typedef pthread_mutex_t wolfSSL_Mutex;
    #elif defined(THREADX)
        typedef TX_MUTEX wolfSSL_Mutex;
    #elif defined(MICRIUM)
        typedef OS_MUTEX wolfSSL_Mutex;
    #elif defined(EBSNET)
        typedef RTP_MUTEX wolfSSL_Mutex;
    #elif defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
        typedef MUTEX_STRUCT wolfSSL_Mutex;
    #elif defined(FREESCALE_FREE_RTOS)
        typedef mutex_t wolfSSL_Mutex;
    #elif defined(WOLFSSL_uITRON4)
        typedef struct wolfSSL_Mutex {
            T_CSEM sem ;
            ID     id ;
        } wolfSSL_Mutex;
    #elif defined(WOLFSSL_uTKERNEL2)
        typedef struct wolfSSL_Mutex {
            T_CSEM sem ;
            ID     id ;
        } wolfSSL_Mutex;
    #elif defined(WOLFSSL_MDK_ARM)
        #if defined(WOLFSSL_CMSIS_RTOS)
            typedef osMutexId wolfSSL_Mutex;
        #else
            typedef OS_MUT wolfSSL_Mutex;
        #endif
    #elif defined(WOLFSSL_CMSIS_RTOS)
        typedef osMutexId wolfSSL_Mutex;
    #elif defined(WOLFSSL_TIRTOS)
        typedef ti_sysbios_knl_Semaphore_Handle wolfSSL_Mutex;
    #elif defined(WOLFSSL_FROSTED)
        typedef mutex_t * wolfSSL_Mutex;
    #elif defined(INTIME_RTOS)
        typedef RTHANDLE wolfSSL_Mutex;
    #else
        #error Need a mutex type in multithreaded mode
    #endif /* USE_WINDOWS_API */
#endif /* SINGLE_THREADED */
        
/* Enable crypt HW mutex for Freescale MMCAU */
#if defined(FREESCALE_MMCAU)
    #ifndef WOLFSSL_CRYPT_HW_MUTEX
        #define WOLFSSL_CRYPT_HW_MUTEX  1
    #endif
#endif /* FREESCALE_MMCAU */

#ifndef WOLFSSL_CRYPT_HW_MUTEX
    #define WOLFSSL_CRYPT_HW_MUTEX  0
#endif

#if WOLFSSL_CRYPT_HW_MUTEX
    /* wolfSSL_CryptHwMutexInit is called on first wolfSSL_CryptHwMutexLock, 
       however it's recommended to call this directly on Hw init to avoid possible 
       race condition where two calls to wolfSSL_CryptHwMutexLock are made at 
       the same time. */
    int wolfSSL_CryptHwMutexInit(void);
    int wolfSSL_CryptHwMutexLock(void);
    int wolfSSL_CryptHwMutexUnLock(void);
#else
    /* Define stubs, since HW mutex is disabled */
    #define wolfSSL_CryptHwMutexInit()      0 /* Success */
    #define wolfSSL_CryptHwMutexLock()      0 /* Success */
    #define wolfSSL_CryptHwMutexUnLock()    0 /* Success */
#endif /* WOLFSSL_CRYPT_HW_MUTEX */

/* Mutex functions */
WOLFSSL_API int wc_InitMutex(wolfSSL_Mutex*);
WOLFSSL_API wolfSSL_Mutex* wc_InitAndAllocMutex(void);
WOLFSSL_API int wc_FreeMutex(wolfSSL_Mutex*);
WOLFSSL_API int wc_LockMutex(wolfSSL_Mutex*);
WOLFSSL_API int wc_UnLockMutex(wolfSSL_Mutex*);

/* main crypto initialization function */
WOLFSSL_API int wolfCrypt_Init(void);
WOLFSSL_API int wolfCrypt_Cleanup(void);

/* filesystem abstraction layer, used by ssl.c */
#ifndef NO_FILESYSTEM

#if defined(EBSNET)
    #include "vfapi.h"
    #include "vfile.h"

    #define XFILE                    int
    #define XFOPEN(NAME, MODE)       vf_open((const char *)NAME, VO_RDONLY, 0);
    #define XFSEEK                   vf_lseek
    #define XFTELL                   vf_tell
    #define XREWIND                  vf_rewind
    #define XFREAD(BUF, SZ, AMT, FD) vf_read(FD, BUF, SZ*AMT)
    #define XFWRITE(BUF, SZ, AMT, FD) vf_write(FD, BUF, SZ*AMT)
    #define XFCLOSE                  vf_close
    #define XSEEK_END                VSEEK_END
    #define XBADFILE                 -1
    #define XFGETS(b,s,f)            -2 /* Not ported yet */
#elif defined(LSR_FS)
    #include <fs.h>
    #define XFILE                   struct fs_file*
    #define XFOPEN(NAME, MODE)      fs_open((char*)NAME);
    #define XFSEEK(F, O, W)         (void)F
    #define XFTELL(F)               (F)->len
    #define XREWIND(F)              (void)F
    #define XFREAD(BUF, SZ, AMT, F) fs_read(F, (char*)BUF, SZ*AMT)
    #define XFWRITE(BUF, SZ, AMT, F) fs_write(F, (char*)BUF, SZ*AMT)
    #define XFCLOSE                 fs_close
    #define XSEEK_END               0
    #define XBADFILE                NULL
    #define XFGETS(b,s,f)            -2 /* Not ported yet */
#elif defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
    #define XFILE                   MQX_FILE_PTR
    #define XFOPEN                  fopen
    #define XFSEEK                  fseek
    #define XFTELL                  ftell
    #define XREWIND(F)              fseek(F, 0, IO_SEEK_SET)
    #define XFREAD                  fread
    #define XFWRITE                 fwrite
    #define XFCLOSE                 fclose
    #define XSEEK_END               IO_SEEK_END
    #define XBADFILE                NULL
    #define XFGETS                  fgets
#elif defined(MICRIUM)
    #include <fs.h>
    #define XFILE      FS_FILE*
    #define XFOPEN     fs_fopen
    #define XFSEEK     fs_fseek
    #define XFTELL     fs_ftell
    #define XREWIND    fs_rewind
    #define XFREAD     fs_fread
    #define XFWRITE    fs_fwrite
    #define XFCLOSE    fs_fclose
    #define XSEEK_END  FS_SEEK_END
    #define XBADFILE   NULL
    #define XFGETS(b,s,f) -2 /* Not ported yet */
#else
    /* stdio, default case */
    #include <stdio.h>
    #define XFILE      FILE*
    #if defined(WOLFSSL_MDK_ARM)
        extern FILE * wolfSSL_fopen(const char *name, const char *mode) ;
        #define XFOPEN     wolfSSL_fopen
    #else
        #define XFOPEN     fopen
    #endif
    #define XFSEEK     fseek
    #define XFTELL     ftell
    #define XREWIND    rewind
    #define XFREAD     fread
    #define XFWRITE    fwrite
    #define XFCLOSE    fclose
    #define XSEEK_END  SEEK_END
    #define XBADFILE   NULL
    #define XFGETS     fgets

    #if !defined(USE_WINDOWS_API) && !defined(NO_WOLFSSL_DIR)
        #include <dirent.h>
        #include <unistd.h>
        #include <sys/stat.h>
    #endif
#endif

    #ifndef MAX_FILENAME_SZ
        #define MAX_FILENAME_SZ  256 /* max file name length */
    #endif
    #ifndef MAX_PATH
        #define MAX_PATH 256
    #endif

#if !defined(NO_WOLFSSL_DIR)
    typedef struct ReadDirCtx {
    #ifdef USE_WINDOWS_API
        WIN32_FIND_DATAA FindFileData;
        HANDLE hFind;
    #else
        struct dirent* entry;
        DIR*   dir;
        struct stat s;
    #endif
        char name[MAX_FILENAME_SZ];
    } ReadDirCtx;

    WOLFSSL_API int wc_ReadDirFirst(ReadDirCtx* ctx, const char* path, char** name);
    WOLFSSL_API int wc_ReadDirNext(ReadDirCtx* ctx, const char* path, char** name);
    WOLFSSL_API void wc_ReadDirClose(ReadDirCtx* ctx);
#endif /* !NO_WOLFSSL_DIR */

#endif /* !NO_FILESYSTEM */


/* Windows API defines its own min() macro. */
#if defined(USE_WINDOWS_API)
    #if defined(min) || defined(WOLFSSL_MYSQL_COMPATIBLE)
        #define WOLFSSL_HAVE_MIN
    #endif /* min */
    #if defined(max) || defined(WOLFSSL_MYSQL_COMPATIBLE)
        #define WOLFSSL_HAVE_MAX
    #endif /* max */
#endif /* USE_WINDOWS_API */


#ifdef __cplusplus
    }  /* extern "C" */
#endif

#endif /* WOLF_CRYPT_PORT_H */


