Dylan Katz | 9d5845b | 2020-05-11 15:44:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | #include <iostream> |
| 17 | |
| 18 | #include "android-base/file.h" |
| 19 | #include "fuzzer/FuzzedDataProvider.h" |
| 20 | #include "utils/FileMap.h" |
| 21 | |
| 22 | static constexpr uint16_t MAX_STR_SIZE = 256; |
| 23 | static constexpr uint8_t MAX_FILENAME_SIZE = 32; |
| 24 | |
| 25 | extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| 26 | FuzzedDataProvider dataProvider(data, size); |
| 27 | TemporaryFile tf; |
| 28 | // Generate file contents |
| 29 | std::string contents = dataProvider.ConsumeRandomLengthString(MAX_STR_SIZE); |
| 30 | // If we have string contents, dump them into the file. |
| 31 | // Otherwise, just leave it as an empty file. |
| 32 | if (contents.length() > 0) { |
| 33 | const char* bytes = contents.c_str(); |
| 34 | android::base::WriteStringToFd(bytes, tf.fd); |
| 35 | } |
| 36 | android::FileMap m; |
| 37 | // Generate create() params |
| 38 | std::string orig_name = dataProvider.ConsumeRandomLengthString(MAX_FILENAME_SIZE); |
| 39 | size_t length = dataProvider.ConsumeIntegralInRange<size_t>(1, SIZE_MAX); |
| 40 | off64_t offset = dataProvider.ConsumeIntegralInRange<off64_t>(1, INT64_MAX); |
| 41 | bool read_only = dataProvider.ConsumeBool(); |
| 42 | m.create(orig_name.c_str(), tf.fd, offset, length, read_only); |
| 43 | m.getDataOffset(); |
| 44 | m.getFileName(); |
| 45 | m.getDataLength(); |
| 46 | m.getDataPtr(); |
| 47 | int enum_index = dataProvider.ConsumeIntegral<int>(); |
| 48 | m.advise(static_cast<android::FileMap::MapAdvice>(enum_index)); |
| 49 | return 0; |
| 50 | } |