/*
   Fuzzing for lzxpress_decompress
   Copyright (C) Michael Hanselmann 2019

   This program 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 3 of the License, or
   (at your option) any later version.

   This program 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, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "fuzzing/fuzzing.h"
#include "lzxpress.h"

int LLVMFuzzerInitialize(int *argc, char ***argv)
{
	return 0;
}

int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len)
{
	static uint8_t compressed[1024 * 1280] = {0};
	static uint8_t decompressed[1024 * 1024] = {0};
	ssize_t compressed_size;
	ssize_t decompressed_size;

	if (len > sizeof(decompressed)) {
		return 0;
	}

	compressed_size = lzxpress_compress(buf, len,
					    compressed, sizeof(compressed));
	if (compressed_size < 0) {
		abort();
	}

	decompressed_size = lzxpress_decompress(compressed, compressed_size,
						decompressed, sizeof(decompressed));

	if (decompressed_size != len) {
		abort();
	}
	if (memcmp(buf, decompressed, len) != 0) {
		abort();
	}

	return 0;
}