1 // SPDX-License-Identifier: Apache-2.0 2 3 #include <stddef.h> 4 #include <stdint.h> 5 6 #include <ziparchive/zip_writer.h> 7 #include "fuzzer/FuzzedDataProvider.h" 8 9 // See current fuzz coverage here: 10 // https://android-coverage.googleplex.com/fuzz_targets/libziparchive_writer_fuzzer/index.html 11 LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)12extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { 13 FuzzedDataProvider provider(data, size); 14 15 std::unique_ptr<std::FILE, decltype(&fclose)> fp(fopen("fuzz", "wb"), 16 &fclose); 17 if (!fp) { 18 return 0; 19 } 20 ZipWriter writer(fp.get()); 21 for (int i = 0; i < 2; i++) { 22 if (provider.remaining_bytes() == 0) { 23 break; 24 } 25 auto path = provider.ConsumeRandomLengthString(); 26 if (writer.StartEntry(path, path.size()) == 0) { 27 for (int j = 0; j < 2; j++) { 28 if (provider.remaining_bytes() == 0) { 29 break; 30 } 31 const size_t next_size = provider.ConsumeIntegralInRange<size_t>( 32 0, provider.remaining_bytes()); 33 auto next_buf = provider.ConsumeBytes<uint8_t>(next_size); 34 writer.WriteBytes(next_buf.data(), next_buf.size()); 35 } 36 writer.FinishEntry(); 37 } 38 } 39 writer.Finish(); 40 return 0; 41 } 42