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