1 /*
2  * Copyright (C) 2020 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.net.util;
18 
19 import static android.net.shared.IpConfigurationParcelableUtil.unparcelAddress;
20 
21 import android.annotation.Nullable;
22 import android.net.DhcpResults;
23 import android.net.DhcpResultsParcelable;
24 
25 import java.net.Inet4Address;
26 
27 /**
28  * Compatibility utility for code that still uses DhcpResults.
29  *
30  * TODO: remove this class when all usages of DhcpResults (including Wifi in AOSP) are removed.
31  */
32 public class DhcpResultsCompatUtil {
33 
34     /**
35      * Convert a DhcpResultsParcelable to DhcpResults.
36      *
37      * contract {
38      *     returns(null) implies p == null
39      *     returnsNotNull() implies p != null
40      * }
41      */
42     @Nullable
fromStableParcelable(@ullable DhcpResultsParcelable p)43     public static DhcpResults fromStableParcelable(@Nullable DhcpResultsParcelable p) {
44         if (p == null) return null;
45         final DhcpResults results = new DhcpResults(p.baseConfiguration);
46         results.leaseDuration = p.leaseDuration;
47         results.mtu = p.mtu;
48         results.serverAddress = (Inet4Address) unparcelAddress(p.serverAddress);
49         results.vendorInfo = p.vendorInfo;
50         results.serverHostName = p.serverHostName;
51         results.captivePortalApiUrl = p.captivePortalApiUrl;
52         return results;
53     }
54 }
55