1 // Copyright 2014 The Chromium OS 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 #ifndef LIBBRILLO_BRILLO_DATA_ENCODING_H_ 6 #define LIBBRILLO_BRILLO_DATA_ENCODING_H_ 7 8 #include <string> 9 #include <utility> 10 #include <vector> 11 12 #include <brillo/brillo_export.h> 13 #include <brillo/secure_blob.h> 14 15 namespace brillo { 16 namespace data_encoding { 17 18 using WebParamList = std::vector<std::pair<std::string, std::string>>; 19 20 // Encode/escape string to be used in the query portion of a URL. 21 // If |encodeSpaceAsPlus| is set to true, spaces are encoded as '+' instead 22 // of "%20" 23 BRILLO_EXPORT std::string UrlEncode(const char* data, bool encodeSpaceAsPlus); 24 25 inline std::string UrlEncode(const char* data) { 26 return UrlEncode(data, true); 27 } 28 29 // Decodes/unescapes a URL. Replaces all %XX sequences with actual characters. 30 // Also replaces '+' with spaces. 31 BRILLO_EXPORT std::string UrlDecode(const char* data); 32 33 // Converts a list of key-value pairs into a string compatible with 34 // 'application/x-www-form-urlencoded' content encoding. 35 BRILLO_EXPORT std::string WebParamsEncode(const WebParamList& params, 36 bool encodeSpaceAsPlus); 37 38 inline std::string WebParamsEncode(const WebParamList& params) { 39 return WebParamsEncode(params, true); 40 } 41 42 // Parses a string of '&'-delimited key-value pairs (separated by '=') and 43 // encoded in a way compatible with 'application/x-www-form-urlencoded' 44 // content encoding. 45 BRILLO_EXPORT WebParamList WebParamsDecode(const std::string& data); 46 47 // Encodes binary data using base64-encoding. 48 BRILLO_EXPORT std::string Base64Encode(const void* data, size_t size); 49 50 // Encodes binary data using base64-encoding and wraps lines at 64 character 51 // boundary using LF as required by PEM (RFC 1421) specification. 52 BRILLO_EXPORT std::string Base64EncodeWrapLines(const void* data, size_t size); 53 54 // Decodes the input string from Base64. 55 BRILLO_EXPORT bool Base64Decode(const std::string& input, brillo::Blob* output); 56 57 // Helper wrappers to use std::string and brillo::Blob as binary data 58 // containers. 59 inline std::string Base64Encode(const brillo::Blob& input) { 60 return Base64Encode(input.data(), input.size()); 61 } 62 inline std::string Base64EncodeWrapLines(const brillo::Blob& input) { 63 return Base64EncodeWrapLines(input.data(), input.size()); 64 } 65 inline std::string Base64Encode(const std::string& input) { 66 return Base64Encode(input.data(), input.size()); 67 } 68 inline std::string Base64EncodeWrapLines(const std::string& input) { 69 return Base64EncodeWrapLines(input.data(), input.size()); 70 } 71 inline bool Base64Decode(const std::string& input, std::string* output) { 72 brillo::Blob blob; 73 if (!Base64Decode(input, &blob)) 74 return false; 75 *output = std::string{blob.begin(), blob.end()}; 76 return true; 77 } 78 79 } // namespace data_encoding 80 } // namespace brillo 81 82 #endif // LIBBRILLO_BRILLO_DATA_ENCODING_H_ 83
