1 /* 2 * Copyright (C) 2021 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 #pragma once 17 18 #include <string> 19 #include <vector> 20 21 #include "jsmn.h" 22 #include "ClearKeyTypes.h" 23 24 namespace clearkeydrm { 25 26 class JsonWebKey { 27 public: 28 JsonWebKey(); 29 virtual ~JsonWebKey(); 30 31 bool extractKeysFromJsonWebKeySet(const std::string& jsonWebKeySet, KeyMap* keys); 32 33 private: 34 std::vector<jsmntok_t> mJsmnTokens; 35 std::vector<std::string> mJsonObjects; 36 std::vector<std::string> mTokens; 37 38 bool decodeBase64String(const std::string& encodedText, std::vector<uint8_t>* decodedText); 39 bool findKey(const std::string& jsonObject, std::string* keyId, std::string* encodedKey); 40 void findValue(const std::string& key, std::string* value); 41 bool isJsonWebKeySet(const std::string& jsonObject) const; 42 bool parseJsonObject(const std::string& jsonObject, std::vector<std::string>* tokens); 43 bool parseJsonWebKeySet(const std::string& jsonWebKeySet, 44 std::vector<std::string>* jsonObjects); 45 46 CLEARKEY_DISALLOW_COPY_AND_ASSIGN(JsonWebKey); 47 }; 48 49 } // namespace clearkeydrm 50