// This file is dual-licensed.  Choose whichever licence you want from
// the two licences listed below.
//
// The first licence is a regular 2-clause BSD licence.  The second licence
// is the CC-0 from Creative Commons. It is intended to release Monocypher
// to the public domain.  The BSD licence serves as a fallback option.
//
// SPDX-License-Identifier: BSD-2-Clause OR CC0-1.0
//
// ------------------------------------------------------------------------
//
// Copyright (c) 2017-2019, 2023 Loup Vaillant
// All rights reserved.
//
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. 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.
//
// 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
// HOLDER 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.
//
// ------------------------------------------------------------------------
//
// Written in 2017-2019, 2023 by Loup Vaillant
//
// To the extent possible under law, the author(s) have dedicated all copyright
// and related neighboring rights to this software to the public domain
// worldwide.  This software is distributed without any warranty.
//
// You should have received a copy of the CC0 Public Domain Dedication along
// with this software.  If not, see
// <https://creativecommons.org/publicdomain/zero/1.0/>

#ifndef UTILS_H
#define UTILS_H

#include <inttypes.h>
#include <stddef.h>

typedef int8_t   i8;
typedef uint8_t  u8;
typedef uint32_t u32;
typedef int32_t  i32;
typedef int64_t  i64;
typedef uint64_t u64;

#define FOR(i, start, end) for (size_t i = (start); i < (end); i++)
#define SODIUM_INIT	ASSERT(sodium_init() != -1)
#define RANDOM_INPUT(name, size) u8 name[size]; p_random(name, size)
#define ASSERT(condition) do {	\
		if (!(condition)) { \
			fprintf(stderr, "Assert failure(%s, %d): %s\n", \
			        __FILE__, __LINE__, #condition); \
			exit(1); \
		} \
	} while (0)
#define ASSERT_EQUAL(a, b, size)     ASSERT(memcmp(a, b, size) == 0)
#define ASSERT_DIFFERENT(a, b, size) ASSERT(memcmp(a, b, size) != 0)
#define ASSERT_OK(exp)               ASSERT((exp) == 0)
#define ASSERT_KO(exp)               ASSERT((exp) != 0)

extern u64 random_state; // state of the RNG

typedef struct {
	u8     *buf;
	size_t  size;
} vector;

typedef struct {
	const char **next;
	size_t       size;
	vector       inputs[10];
	size_t       nb_inputs;
	vector       expected;
	vector       out;
} vector_reader;

u64  load64_le(const u8 s[8]);
u32  load32_le(const u8 s[4]);
u64  rand64(void); // Pseudo-random 64 bit number, based on xorshift*
void p_random(u8 *stream, size_t size);
void* alloc(size_t size);

vector next_input (vector_reader *vectors);
vector next_output(vector_reader *vectors);
int  vector_test(void (*f)(vector_reader*),
                 const char *name, size_t nb_vectors, const char *vectors[]);

#endif // UTILS_H