64 lines
2.2 KiB
Java
64 lines
2.2 KiB
Java
/*
|
|
* 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);
|
|
}
|
|
|
|
}
|