| // Copyright 2018 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <cstdint> |
| #include <cstdlib> |
| #include <iostream> |
| #include <vector> |
| |
| extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv); |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size); |
| |
| int main(int argc, char** argv) { |
| if (LLVMFuzzerInitialize(&argc, &argv)) { |
| std::cerr << "Failed to initialize fuzzer target" << std::endl; |
| return 1; |
| } |
| |
| if (argc != 2) { |
| std::cout << "Usage: <standalone reproducer> [options] FILE" << std::endl; |
| return 1; |
| } |
| |
| std::cout << "WARNING: this is just a best-effort reproducer for fuzzer issues in standalone " |
| << "Dawn builds. For the real fuzzer, please build inside Chromium." << std::endl; |
| |
| const char* filename = argv[1]; |
| std::cout << "Reproducing using file: " << filename << std::endl; |
| |
| std::vector<char> data; |
| { |
| FILE* file = fopen(filename, "rb"); |
| if (!file) { |
| std::cerr << "Failed to open " << filename << std::endl; |
| return 1; |
| } |
| |
| fseek(file, 0, SEEK_END); |
| int32_t tellFileSize = ftell(file); |
| if (tellFileSize <= 0) { |
| std::cerr << "Input file of incorrect size: " << filename << std::endl; |
| return 1; |
| } |
| fseek(file, 0, SEEK_SET); |
| |
| size_t fileSize = static_cast<size_t>(tellFileSize); |
| data.resize(fileSize); |
| |
| size_t bytesRead = fread(data.data(), sizeof(char), fileSize, file); |
| fclose(file); |
| if (bytesRead != fileSize) { |
| std::cerr << "Failed to read " << filename << std::endl; |
| return 1; |
| } |
| } |
| |
| return LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t*>(data.data()), data.size()); |
| } |