// Copyright 2017 Google Inc. All Rights Reserved.

// Licensed under the Apache License, Version 2.0 (the "License");

// Example of a standalone runner for "fuzz targets".

// It reads all files passed as parameters and feeds their contents

// one by one into the fuzz target (LLVMFuzzerTestOneInput).

// This runner does not do any fuzzing, but allows us to run the fuzz target

// on the test corpus (e.g. "do_stuff_test_data") or on a single file,

// e.g. the one that comes from a bug report.

#include <cassert>

#include <fstream>

#include <iostream>

#include <vector>

// Forward declare the "fuzz target" interface.

// We deliberately keep this inteface simple and header-free.

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);

extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv);

int main(int argc, char **argv)

{

	LLVMFuzzerInitialize(&argc, &argv);

	for (int i = 1; i < argc; i++) {

		std::ifstream in(argv[i]);

		in.seekg(0, in.end);

		size_t length = in.tellg();

		in.seekg(0, in.beg);

		std::cout << "Reading " << length << " bytes from " << argv[i]

		          << std::endl;

		// Allocate exactly length bytes so that we reliably catch

		// buffer overflows.

		std::vector<char> bytes(length);

		in.read(bytes.data(), bytes.size());

		assert(in);

		LLVMFuzzerTestOneInput(

		    reinterpret_cast<const uint8_t *>(bytes.data()),

		    bytes.size());

		std::cout << "Execution successful" << std::endl;

	}

	return 0;

}

// no-check-code since this is from a third party