base/strings/string_number_conversions_fuzzer.cc

// 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.

#include <stddef.h>
#include <stdint.h>

#include <string>
#include <vector>

#include "base/strings/string_number_conversions.h"

// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
  base::StringPiece string_piece_input(reinterpret_cast<const char*>(data),
                                       size);
  std::string string_input(reinterpret_cast<const char*>(data), size);

  int out_int;
  base::StringToInt(string_piece_input, &out_int);
  unsigned out_uint;
  base::StringToUint(string_piece_input, &out_uint);
  int64_t out_int64;
  base::StringToInt64(string_piece_input, &out_int64);
  uint64_t out_uint64;
  base::StringToUint64(string_piece_input, &out_uint64);
  size_t out_size;
  base::StringToSizeT(string_piece_input, &out_size);

  // Test for StringPiece16 if size is even.
  if (size % 2 == 0) {
    base::StringPiece16 string_piece_input16(
        reinterpret_cast<const base::char16*>(data), size / 2);

    base::StringToInt(string_piece_input16, &out_int);
    base::StringToUint(string_piece_input16, &out_uint);
    base::StringToInt64(string_piece_input16, &out_int64);
    base::StringToUint64(string_piece_input16, &out_uint64);
    base::StringToSizeT(string_piece_input16, &out_size);
  }

  double out_double;
  base::StringToDouble(string_input, &out_double);

  base::HexStringToInt(string_piece_input, &out_int);
  base::HexStringToUInt(string_piece_input, &out_uint);
  base::HexStringToInt64(string_piece_input, &out_int64);
  base::HexStringToUInt64(string_piece_input, &out_uint64);
  std::vector<uint8_t> out_bytes;
  base::HexStringToBytes(string_piece_input, &out_bytes);

  base::HexEncode(data, size);

  // Convert the numbers back to strings.
  base::NumberToString(out_int);
  base::NumberToString16(out_int);
  base::NumberToString(out_uint);
  base::NumberToString16(out_uint);
  base::NumberToString(out_int64);
  base::NumberToString16(out_int64);
  base::NumberToString(out_uint64);
  base::NumberToString16(out_uint64);
  base::NumberToString(out_double);
  base::NumberToString16(out_double);

  return 0;
}