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      1 /*
      2  * Copyright (C) 2015 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 package android.service.gatekeeper;
     18 
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 
     22 /**
     23  * Response object for a GateKeeper verification request.
     24  * @hide
     25  */
     26 public final class GateKeeperResponse implements Parcelable {
     27 
     28     public static final int RESPONSE_ERROR = -1;
     29     public static final int RESPONSE_OK = 0;
     30     public static final int RESPONSE_RETRY = 1;
     31 
     32     private final int mResponseCode;
     33 
     34     private int mTimeout;
     35     private byte[] mPayload;
     36     private boolean mShouldReEnroll;
     37 
     38     private GateKeeperResponse(int responseCode) {
     39         mResponseCode = responseCode;
     40     }
     41 
     42     private GateKeeperResponse(int responseCode, int timeout) {
     43         mResponseCode = responseCode;
     44     }
     45 
     46     @Override
     47     public int describeContents() {
     48         return 0;
     49     }
     50 
     51     public static final Parcelable.Creator<GateKeeperResponse> CREATOR
     52             = new Parcelable.Creator<GateKeeperResponse>() {
     53         @Override
     54         public GateKeeperResponse createFromParcel(Parcel source) {
     55             int responseCode = source.readInt();
     56             GateKeeperResponse response = new GateKeeperResponse(responseCode);
     57             if (responseCode == RESPONSE_RETRY) {
     58                 response.setTimeout(source.readInt());
     59             } else if (responseCode == RESPONSE_OK) {
     60                 response.setShouldReEnroll(source.readInt() == 1);
     61                 int size = source.readInt();
     62                 if (size > 0) {
     63                     byte[] payload = new byte[size];
     64                     source.readByteArray(payload);
     65                     response.setPayload(payload);
     66                 }
     67             }
     68             return response;
     69         }
     70 
     71         @Override
     72         public GateKeeperResponse[] newArray(int size) {
     73             return new GateKeeperResponse[size];
     74         }
     75 
     76     };
     77 
     78     @Override
     79     public void writeToParcel(Parcel dest, int flags) {
     80         dest.writeInt(mResponseCode);
     81         if (mResponseCode == RESPONSE_RETRY) {
     82             dest.writeInt(mTimeout);
     83         } else if (mResponseCode == RESPONSE_OK) {
     84             dest.writeInt(mShouldReEnroll ? 1 : 0);
     85             if (mPayload != null) {
     86                 dest.writeInt(mPayload.length);
     87                 dest.writeByteArray(mPayload);
     88             }
     89         }
     90     }
     91 
     92     public byte[] getPayload() {
     93         return mPayload;
     94     }
     95 
     96     public int getTimeout() {
     97         return mTimeout;
     98     }
     99 
    100     public boolean getShouldReEnroll() {
    101         return mShouldReEnroll;
    102     }
    103 
    104     public int getResponseCode() {
    105         return mResponseCode;
    106     }
    107 
    108     private void setTimeout(int timeout) {
    109         mTimeout = timeout;
    110     }
    111 
    112     private void setShouldReEnroll(boolean shouldReEnroll) {
    113         mShouldReEnroll = shouldReEnroll;
    114     }
    115 
    116     private void setPayload(byte[] payload) {
    117         mPayload = payload;
    118     }
    119 
    120 }
    121