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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/+/main/"
- "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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