OLD | NEW |
(Empty) | |
| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // A fuzzer that checks correctness of json parser/writer. |
| 6 // The fuzzer input is passed through parsing twice, |
| 7 // so that presumably valid json is parsed/written again. |
| 8 |
| 9 #include <stddef.h> |
| 10 #include <stdint.h> |
| 11 |
| 12 #include <string> |
| 13 |
| 14 #include "base/json/json_reader.h" |
| 15 #include "base/json/json_writer.h" |
| 16 #include "base/json/string_escape.h" |
| 17 #include "base/logging.h" |
| 18 #include "base/values.h" |
| 19 |
| 20 // Entry point for libFuzzer. |
| 21 // We will use the last byte of data as parsing options. |
| 22 // The rest will be used as text input to the parser. |
| 23 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| 24 if (size < 2) |
| 25 return 0; |
| 26 |
| 27 int error_code, error_line, error_column; |
| 28 std::string error_message; |
| 29 |
| 30 const std::string input_string(reinterpret_cast<const char*>(data), size - 1); |
| 31 const int options = data[size - 1]; |
| 32 auto parsed_value = base::JSONReader::ReadAndReturnError( |
| 33 input_string, options, &error_code, &error_message, &error_line, |
| 34 &error_column); |
| 35 if (!parsed_value) |
| 36 return 0; |
| 37 |
| 38 std::string parsed_output; |
| 39 bool b = base::JSONWriter::Write(*parsed_value, &parsed_output); |
| 40 LOG_ASSERT(b); |
| 41 |
| 42 auto double_parsed_value = base::JSONReader::ReadAndReturnError( |
| 43 parsed_output, options, &error_code, &error_message, &error_line, |
| 44 &error_column); |
| 45 LOG_ASSERT(double_parsed_value); |
| 46 std::string double_parsed_output; |
| 47 bool b2 = |
| 48 base::JSONWriter::Write(*double_parsed_value, &double_parsed_output); |
| 49 LOG_ASSERT(b2); |
| 50 |
| 51 LOG_ASSERT(parsed_output == double_parsed_output) |
| 52 << "Parser/Writer mismatch." |
| 53 << "\nInput=" << base::GetQuotedJSONString(parsed_output) |
| 54 << "\nOutput=" << base::GetQuotedJSONString(double_parsed_output); |
| 55 |
| 56 return 0; |
| 57 } |
OLD | NEW |