content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.service.gatekeeper;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  
  import com.android.internal.annotations.VisibleForTesting;
  
  /**
   * Response object for a GateKeeper verification request.
   * @hide
   */
  public final class GateKeeperResponse implements Parcelable {
  
      public static final int RESPONSE_ERROR = -1;
      public static final int RESPONSE_OK = 0;
      public static final int RESPONSE_RETRY = 1;
  
      private final int mResponseCode;
  
      private int mTimeout;
      private byte[] mPayload;
      private boolean mShouldReEnroll;
  
      /** Default constructor for response with generic response code **/
      private GateKeeperResponse(int responseCode) {
          mResponseCode = responseCode;
      }
  
      @VisibleForTesting
      public static GateKeeperResponse createGenericResponse(int responseCode) {
          return new GateKeeperResponse(responseCode);
      }
  
      private static GateKeeperResponse createRetryResponse(int timeout) {
          GateKeeperResponse response = new GateKeeperResponse(RESPONSE_RETRY);
          response.mTimeout = timeout;
          return response;
      }
  
      @VisibleForTesting
      public static GateKeeperResponse createOkResponse(byte[] payload, boolean shouldReEnroll) {
          GateKeeperResponse response = new GateKeeperResponse(RESPONSE_OK);
          response.mPayload = payload;
          response.mShouldReEnroll = shouldReEnroll;
          return response;
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      public static final @android.annotation.NonNull Parcelable.Creator<GateKeeperResponse> CREATOR
              = new Parcelable.Creator<GateKeeperResponse>() {
          @Override
          public GateKeeperResponse createFromParcel(Parcel source) {
              int responseCode = source.readInt();
              final GateKeeperResponse response;
              if (responseCode == RESPONSE_RETRY) {
                  response = createRetryResponse(source.readInt());
              } else if (responseCode == RESPONSE_OK) {
                  final boolean shouldReEnroll = source.readInt() == 1;
                  byte[] payload = null;
                  int size = source.readInt();
                  if (size > 0) {
                      payload = new byte[size];
                      source.readByteArray(payload);
                  }
                  response = createOkResponse(payload, shouldReEnroll);
              } else {
                  response = createGenericResponse(responseCode);
              }
              return response;
          }
  
          @Override
          public GateKeeperResponse[] newArray(int size) {
              return new GateKeeperResponse[size];
          }
  
      };
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeInt(mResponseCode);
          if (mResponseCode == RESPONSE_RETRY) {
              dest.writeInt(mTimeout);
          } else if (mResponseCode == RESPONSE_OK) {
              dest.writeInt(mShouldReEnroll ? 1 : 0);
              if (mPayload != null) {
                  dest.writeInt(mPayload.length);
                  dest.writeByteArray(mPayload);
              } else {
                  dest.writeInt(0);
              }
          }
      }
  
      public byte[] getPayload() {
          return mPayload;
      }
  
      public int getTimeout() {
          return mTimeout;
      }
  
      public boolean getShouldReEnroll() {
          return mShouldReEnroll;
      }
  
      public int getResponseCode() {
          return mResponseCode;
      }
  }
  