/*
 * Copyright (C) 2019 Intel Corporation.  All rights reserved.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 */

#include "bh_platform.h"

#define RSIZE_MAX 0x7FFFFFFF

int b_memcpy_s(void * s1, unsigned int s1max, const void * s2, unsigned int n)
{
    char *dest = (char*) s1;
    char *src = (char*) s2;
    if (n == 0) {
        return 0;
    }

    if (s1 == NULL || s1max > RSIZE_MAX) {
        return -1;
    }
    if (s2 == NULL || n > s1max) {
        memset(dest, 0, s1max);
        return -1;
    }
    memcpy(dest, src, n);
    return 0;
}

int b_strcat_s(char * s1, size_t s1max, const char * s2)
{
    if (NULL == s1 || NULL == s2
        || s1max < (strlen(s1) + strlen(s2) + 1)
        || s1max > RSIZE_MAX) {
        return -1;
    }

    strcat(s1, s2);

    return 0;
}

int b_strcpy_s(char * s1, size_t s1max, const char * s2)
{
    if (NULL == s1 || NULL == s2
        || s1max < (strlen(s2) + 1)
        || s1max > RSIZE_MAX) {
        return -1;
    }

    strcpy(s1, s2);

    return 0;
}

int fopen_s(FILE ** pFile, const char *filename, const char *mode)
{
    if (NULL == pFile || NULL == filename || NULL == mode) {
        return -1;
    }

    *pFile = fopen(filename, mode);

    if (NULL == *pFile)
        return -1;

    return 0;
}