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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// A simple unit-test style driver for libfuzzer tests.
// Usage: <fuzzer_test> <file>...
#include <stddef.h>
#include <stdint.h>
#include <fstream>
#include <iostream>
#include <iterator>
#include <vector>
// Libfuzzer API.
extern "C" {
// User function.
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
// Initialization function.
__attribute__((weak)) int LLVMFuzzerInitialize(int *argc, char ***argv);
// Mutation function provided by libFuzzer.
size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize);
}
std::vector<uint8_t> readFile(std::string path) {
std::ifstream in(path);
return std::vector<uint8_t>((std::istreambuf_iterator<char>(in)),
std::istreambuf_iterator<char>());
}
size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize) {
return 0;
}
int main(int argc, char **argv) {
if (argc == 1) {
std::cerr
<< "Usage: " << argv[0]
<< " <file>...\n"
"\n"
"Alternatively, try building this target with "
"use_libfuzzer=true for a better test driver. For details see:\n"
"\n"
"https://chromium.googlesource.com/chromium/src/+/master/"
"testing/libfuzzer/getting_started.md"
<< std::endl;
exit(1);
}
if (LLVMFuzzerInitialize)
LLVMFuzzerInitialize(&argc, &argv);
for (int i = 1; i < argc; ++i) {
std::cout << argv[i] << std::endl;
auto v = readFile(argv[i]);
LLVMFuzzerTestOneInput(v.data(), v.size());
}
}
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