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#include <stdio.h>
#include <stdlib.h>
#include <openssl/sha.h>
#include "sha512_mb.h"

#define TEST_LEN  (1024*1024)
#define TEST_BUFS 200
#ifndef RANDOMS
# define RANDOMS  10
#endif
#ifndef TEST_SEED
# define TEST_SEED 0x1234
#endif

/* Reference digest global to reduce stack usage */
static uint8_t digest_ssl[TEST_BUFS][8 * SHA512_DIGEST_NWORDS];

// Generates pseudo-random data
void rand_buffer(unsigned char *buf, const long buffer_size)
{
	long i;
	for (i = 0; i < buffer_size; i++)
		buf[i] = rand();
}

uint64_t byteswap64(uint64_t x)
{
#if defined (__ICC)
	return _bswap64(x);
#elif defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
	return __builtin_bswap64(x);
#else
	return (((x & (0xffull << 0)) << 56)
		| ((x & (0xffull << 8)) << 40)
		| ((x & (0xffull << 16)) << 24)
		| ((x & (0xffull << 24)) << 8)
		| ((x & (0xffull << 32)) >> 8)
		| ((x & (0xffull << 40)) >> 24)
		| ((x & (0xffull << 48)) >> 40)
		| ((x & (0xffull << 56)) >> 56));
#endif
}

int main(void)
{
	SHA512_HASH_CTX_MGR *mgr = NULL;
	SHA512_HASH_CTX ctxpool[TEST_BUFS];
	unsigned char *bufs[TEST_BUFS];
	uint32_t i, j, fail = 0;
	uint32_t lens[TEST_BUFS];
	unsigned int jobs, t;

	printf("multibinary_sha512 test, %d sets of %dx%d max: ", RANDOMS, TEST_BUFS,
	       TEST_LEN);

	srand(TEST_SEED);

	posix_memalign((void *)&mgr, 16, sizeof(SHA512_HASH_CTX_MGR));
	sha512_ctx_mgr_init(mgr);

	for (i = 0; i < TEST_BUFS; i++) {
		// Allocate and fill buffer
		bufs[i] = (unsigned char *)malloc(TEST_LEN);
		if (bufs[i] == NULL) {
			printf("malloc failed test aborted\n");
			return 1;
		}
		rand_buffer(bufs[i], TEST_LEN);

		// Init ctx contents
		hash_ctx_init(&ctxpool[i]);
		ctxpool[i].user_data = (void *)((uint64_t) i);

		// SSL test
		SHA512(bufs[i], TEST_LEN, digest_ssl[i]);

		// sb_sha512 test
		sha512_ctx_mgr_submit(mgr, &ctxpool[i], bufs[i], TEST_LEN, HASH_ENTIRE);
	}

	while (sha512_ctx_mgr_flush(mgr)) ;

	for (i = 0; i < TEST_BUFS; i++) {
		for (j = 0; j < SHA512_DIGEST_NWORDS; j++) {
			if (ctxpool[i].job.result_digest[j] !=
			    byteswap64(((uint64_t *) digest_ssl[i])[j])) {
				fail++;
				printf("Test%d, digest%d fail %016lX <=> %016lX\n",
				       i, j, ctxpool[i].job.result_digest[j],
				       byteswap64(((uint64_t *) digest_ssl[i])[j]));
			}
		}
	}
	putchar('.');

	// Run tests with random size and number of jobs
	for (t = 0; t < RANDOMS; t++) {
		jobs = rand() % (TEST_BUFS);

		sha512_ctx_mgr_init(mgr);

		for (i = 0; i < jobs; i++) {
			// Ramdom buffer with ramdom len and contents
			lens[i] = rand() % (TEST_LEN);
			rand_buffer(bufs[i], lens[i]);

			// Run SSL test
			SHA512(bufs[i], lens[i], digest_ssl[i]);

			// Run sb_sha512 test
			sha512_ctx_mgr_submit(mgr, &ctxpool[i], bufs[i], lens[i], HASH_ENTIRE);
		}

		while (sha512_ctx_mgr_flush(mgr)) ;

		for (i = 0; i < jobs; i++) {
			for (j = 0; j < SHA512_DIGEST_NWORDS; j++) {
				if (ctxpool[i].job.result_digest[j] !=
				    byteswap64(((uint64_t *) digest_ssl[i])[j])) {
					fail++;
					printf("Test%d, digest%d fail %016lX <=> %016lX\n",
					       i, j, ctxpool[i].job.result_digest[j],
					       byteswap64(((uint64_t *) digest_ssl[i])[j]));
				}
			}
		}
		if (fail) {
			printf("Test failed function check %d\n", fail);
			return fail;
		}

		putchar('.');
		fflush(0);
	}			// random test t

	if (fail)
		printf("Test failed function check %d\n", fail);
	else
		printf(" multibinary_sha512_ssl rand: Pass\n");

	return fail;
}
