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.managedprovisioning.common;
18 
19 import android.annotation.Nullable;
20 import android.text.TextUtils;
21 
22 /**
23  * Parser for the device manager role holder config.
24  */
25 class RoleHolderParser {
26     /**
27      * Retrieves the package name for a given {@code deviceManagerConfig}.
28      *
29      * <p>Valid configs look like:
30      * <ul>
31      *     <li>{@code com.package.name}</li>
32      *     <li>{@code com.package.name:<SHA256 checksum>}</li>
33      * </ul>
34      *
35      * <p>If the supplied {@code deviceManagerConfig} is {@code null} or empty, returns
36      * {@code null}.
37      */
getRoleHolderPackage(@ullable String deviceManagerConfig)38     static @Nullable String getRoleHolderPackage(@Nullable String deviceManagerConfig) {
39         if (TextUtils.isEmpty(deviceManagerConfig)) {
40             return null;
41         }
42         if (deviceManagerConfig.contains(":")) {
43             return deviceManagerConfig.split(":")[0];
44         }
45         return deviceManagerConfig;
46     }
47 }
48