1 /* 2 * Copyright (C) 2016 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 17 #pragma once 18 19 #include <string> 20 #include <vector> 21 22 namespace android { 23 24 struct Hash { 25 static const std::vector<uint8_t> kEmptyHash; 26 27 // path to .hal file 28 static const Hash& getHash(const std::string& path); 29 static void clearHash(const std::string& path); 30 31 // returns matching hashes of interfaceName in path 32 // path is something like hardware/interfaces/current.txt 33 // interfaceName is something like android.hardware.foo@1.0::IFoo 34 static std::vector<std::string> lookupHash(const std::string& path, 35 const std::string& interfaceName, std::string* err, 36 bool* fileExists = nullptr); 37 38 static std::string hexString(const std::vector<uint8_t>& hash); 39 std::string hexString() const; 40 41 const std::vector<uint8_t>& raw() const; 42 const std::string& getPath() const; 43 44 private: 45 Hash(const std::string& path); 46 47 static Hash& getMutableHash(const std::string& path); 48 49 const std::string mPath; 50 std::vector<uint8_t> mHash; 51 }; 52 53 } // namespace android 54