// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0

#pragma once

#include <stdio.h>
#include "ctype.h"
#include "puttymem.h"
#include "assert.h"


struct Filename {
	char *path;
};

typedef struct Filename Filename;

#define f_open(filename, mode, isprivate) ( fopen((filename)->path, (mode)) )



//32
char *dupstr(const char *s);


//51
int toint(unsigned);

char *fgetline(FILE *fp);
int strstartswith(const char *s, const char *t);
int strendswith(const char *s, const char *t);

void base64_encode_atom(unsigned char *data, int n, char *out);
int base64_decode_atom(char *atom, unsigned char *out);


//78
/* Wipe sensitive data out of memory that's about to be freed. Simpler
* than memset because we don't need the fill char parameter; also
* attempts (by fiddly use of volatile) to inhibit the compiler from
* over-cleverly trying to optimise the memset away because it knows
* the variable is going out of scope. */
void smemclr(void *b, size_t len);

/* Compare two fixed-length chunks of memory for equality, without
* data-dependent control flow (so an attacker with a very accurate
* stopwatch can't try to guess where the first mismatching byte was).
* Returns 0 for mismatch or 1 for equality (unlike memcmp), hinted at
* by the 'eq' in the name. */
int smemeq(const void *av, const void *bv, size_t len);


//117
#ifndef lenof
#define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
#endif


//128
#define GET_32BIT_LSB_FIRST(cp) \
  (((unsigned long)(unsigned char)(cp)[0]) | \
  ((unsigned long)(unsigned char)(cp)[1] << 8) | \
  ((unsigned long)(unsigned char)(cp)[2] << 16) | \
  ((unsigned long)(unsigned char)(cp)[3] << 24))

#define PUT_32BIT_LSB_FIRST(cp, value) ( \
  (cp)[0] = (unsigned char)(value), \
  (cp)[1] = (unsigned char)((value) >> 8), \
  (cp)[2] = (unsigned char)((value) >> 16), \
  (cp)[3] = (unsigned char)((value) >> 24) )

#define GET_16BIT_LSB_FIRST(cp) \
  (((unsigned long)(unsigned char)(cp)[0]) | \
  ((unsigned long)(unsigned char)(cp)[1] << 8))

#define PUT_16BIT_LSB_FIRST(cp, value) ( \
  (cp)[0] = (unsigned char)(value), \
  (cp)[1] = (unsigned char)((value) >> 8) )

#define GET_32BIT_MSB_FIRST(cp) \
  (((unsigned long)(unsigned char)(cp)[0] << 24) | \
  ((unsigned long)(unsigned char)(cp)[1] << 16) | \
  ((unsigned long)(unsigned char)(cp)[2] << 8) | \
  ((unsigned long)(unsigned char)(cp)[3]))

#define GET_32BIT(cp) GET_32BIT_MSB_FIRST(cp)

#define PUT_32BIT_MSB_FIRST(cp, value) ( \
  (cp)[0] = (unsigned char)((value) >> 24), \
  (cp)[1] = (unsigned char)((value) >> 16), \
  (cp)[2] = (unsigned char)((value) >> 8), \
  (cp)[3] = (unsigned char)(value) )

#define PUT_32BIT(cp, value) PUT_32BIT_MSB_FIRST(cp, value)

#define GET_16BIT_MSB_FIRST(cp) \
  (((unsigned long)(unsigned char)(cp)[0] << 8) | \
  ((unsigned long)(unsigned char)(cp)[1]))

#define PUT_16BIT_MSB_FIRST(cp, value) ( \
  (cp)[0] = (unsigned char)((value) >> 8), \
  (cp)[1] = (unsigned char)(value) )