1// Copyright (c) 2012 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#include "base/base64.h" 6 7#include "third_party/modp_b64/modp_b64.h" 8 9namespace base { 10 11bool Base64Encode(const StringPiece& input, std::string* output) { 12 std::string temp; 13 temp.resize(modp_b64_encode_len(input.size())); // makes room for null byte 14 15 // null terminates result since result is base64 text! 16 int input_size = static_cast<int>(input.size()); 17 18 // modp_b64_encode_len() returns at least 1, so temp[0] is safe to use. 19 size_t output_size = modp_b64_encode(&(temp[0]), input.data(), input_size); 20 if (output_size == MODP_B64_ERROR) 21 return false; 22 23 temp.resize(output_size); // strips off null byte 24 output->swap(temp); 25 return true; 26} 27 28bool Base64Decode(const StringPiece& input, std::string* output) { 29 std::string temp; 30 temp.resize(modp_b64_decode_len(input.size())); 31 32 // does not null terminate result since result is binary data! 33 size_t input_size = input.size(); 34 size_t output_size = modp_b64_decode(&(temp[0]), input.data(), input_size); 35 if (output_size == MODP_B64_ERROR) 36 return false; 37 38 temp.resize(output_size); 39 output->swap(temp); 40 return true; 41} 42 43} // namespace base 44