1 /*
2  * Copyright (C) 2022 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 com.android.server.devicepolicy;
18 
19 import android.annotation.NonNull;
20 import android.annotation.Nullable;
21 import android.app.admin.ComponentNamePolicyValue;
22 import android.app.admin.PolicyKey;
23 import android.content.ComponentName;
24 import android.util.Log;
25 
26 import com.android.modules.utils.TypedXmlPullParser;
27 import com.android.modules.utils.TypedXmlSerializer;
28 
29 import java.io.IOException;
30 import java.util.Objects;
31 
32 final class ComponentNamePolicySerializer extends PolicySerializer<ComponentName> {
33 
34     private static final String TAG = "ComponentNamePolicySerializer";
35 
36     private static final String ATTR_PACKAGE_NAME = "package-name";
37     private static final String ATTR_CLASS_NAME = "class-name";
38 
39     @Override
saveToXml(PolicyKey policyKey, TypedXmlSerializer serializer, @NonNull ComponentName value)40     void saveToXml(PolicyKey policyKey, TypedXmlSerializer serializer,
41             @NonNull ComponentName value) throws IOException {
42         Objects.requireNonNull(value);
43         serializer.attribute(
44                 /* namespace= */ null, ATTR_PACKAGE_NAME, value.getPackageName());
45         serializer.attribute(
46                 /* namespace= */ null, ATTR_CLASS_NAME, value.getClassName());
47     }
48 
49     @Nullable
50     @Override
readFromXml(TypedXmlPullParser parser)51     ComponentNamePolicyValue readFromXml(TypedXmlPullParser parser) {
52         String packageName = parser.getAttributeValue(
53                 /* namespace= */ null, ATTR_PACKAGE_NAME);
54         String className = parser.getAttributeValue(
55                 /* namespace= */ null, ATTR_CLASS_NAME);
56         if (packageName == null || className == null) {
57             Log.e(TAG, "Error parsing ComponentName policy.");
58             return null;
59         }
60         return new ComponentNamePolicyValue(new ComponentName(packageName, className));
61     }
62 }
63