content: /*
   * Copyright (C) 2010 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 com.google.android.vending.licensing;
  
  /**
   * Non-caching policy. All requests will be sent to the licensing service,
   * and no local caching is performed.
   * <p>
   * Using a non-caching policy ensures that there is no local preference data
   * for malicious users to tamper with. As a side effect, applications
   * will not be permitted to run while offline. Developers should carefully
   * weigh the risks of using this Policy over one which implements caching,
   * such as ServerManagedPolicy.
   * <p>
   * Access to the application is only allowed if a LICESNED response is.
   * received. All other responses (including RETRY) will deny access.
   */
  public class StrictPolicy implements Policy {
  
      private int mLastResponse;
  
      public StrictPolicy() {
          // Set default policy. This will force the application to check the policy on launch.
          mLastResponse = Policy.RETRY;
      }
  
      /**
       * Process a new response from the license server. Since we aren't
       * performing any caching, this equates to reading the LicenseResponse.
       * Any ResponseData provided is ignored.
       *
       * @param response the result from validating the server response
       * @param rawData the raw server response data
       */
      public void processServerResponse(int response, ResponseData rawData) {
          mLastResponse = response;
      }
  
      /**
       * {@inheritDoc}
       *
       * This implementation allows access if and only if a LICENSED response
       * was received the last time the server was contacted.
       */
      public boolean allowAccess() {
          return (mLastResponse == Policy.LICENSED);
      }
  
  }
  