1 /* 2 * Copyright (C) 2017 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 _BOOTANIMATION_BOOT_PARAMETERS_H_ 18 #define _BOOTANIMATION_BOOT_PARAMETERS_H_ 19 20 #include <list> 21 #include <string> 22 #include <vector> 23 24 #include <boot_action/boot_action.h> // libandroidthings native API. 25 #include <boot_parameters.pb.h> 26 27 namespace android { 28 29 // Provides access to the parameters set by DeviceManager.reboot(). 30 class BootParameters { 31 public: 32 // Constructor loads the parameters for this boot and swaps the param files 33 // to clear the parameters for next boot. 34 BootParameters(); 35 36 // Returns whether or not this is a silent boot. isSilentBoot()37 bool isSilentBoot() const { return mIsSilentBoot; } 38 39 // Returns the additional boot parameters that were set on reboot. getParameters()40 const std::vector<ABootActionParameter>& getParameters() const { return mParameters; } 41 42 // Exposed for testing. Sets the parameters to the serialized proto. 43 void parseBootParameters(const std::string &contents); 44 45 // For devices that OTA from N to O. 46 // Exposed for testing. Sets the parameters to the raw JSON. 47 void parseLegacyBootParameters(const std::string &contents); 48 49 // Exposed for testing. Loads the contents from |nextBootFile| and replaces 50 // |lastBootFile| with |nextBootFile|. 51 static bool swapAndLoadBootConfigContents(const char *lastBootFile, const char *nextBootFile, 52 std::string *contents); 53 54 private: 55 void loadParameters(); 56 57 // Replaces the legacy JSON blob with the updated version, allowing the 58 // framework to read it. 59 void storeParameters(); 60 61 void loadStateFromProto(); 62 63 bool mIsSilentBoot = false; 64 65 std::vector<ABootActionParameter> mParameters; 66 67 // Store the proto because mParameters makes a shallow copy. 68 android::things::proto::BootParameters mProto; 69 }; 70 71 } // namespace android 72 73 74 #endif // _BOOTANIMATION_BOOT_PARAMETERS_H_ 75