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 #ifndef HIDL_GEN_HASH_HASH_H_ 18 #define HIDL_GEN_HASH_HASH_H_ 19 20 #include <string> 21 #include <vector> 22 23 namespace android { 24 25 struct Hash { 26 static const std::vector<uint8_t> kEmptyHash; 27 28 // path to .hal file 29 static const Hash &getHash(const std::string &path); 30 static void clearHash(const std::string& path); 31 32 // returns matching hashes of interfaceName in path 33 // path is something like hardware/interfaces/current.txt 34 // interfaceName is something like android.hardware.foo (at) 1.0::IFoo 35 static std::vector<std::string> lookupHash(const std::string& path, 36 const std::string& interfaceName, std::string* err, 37 bool* fileExists = nullptr); 38 39 static std::string hexString(const std::vector<uint8_t> &hash); 40 std::string hexString() const; 41 42 const std::vector<uint8_t> &raw() const; 43 const std::string &getPath() const; 44 45 private: 46 Hash(const std::string &path); 47 48 static Hash& getMutableHash(const std::string& path); 49 50 const std::string mPath; 51 std::vector<uint8_t> mHash; 52 }; 53 54 } // namespace android 55 56 #endif // HIDL_GEN_HASH_HASH_H_ 57 58
