1 /*
2  * Copyright (C) 2017 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 package com.android.wallpaper.module;
17 
18 import android.content.Context;
19 import android.content.Intent;
20 import android.content.pm.ApplicationInfo;
21 import android.content.pm.PackageManager;
22 import android.content.pm.PackageManager.NameNotFoundException;
23 import android.content.pm.ResolveInfo;
24 import android.content.res.Resources;
25 import android.util.Log;
26 import android.util.Pair;
27 
28 import androidx.annotation.Nullable;
29 
30 import dagger.hilt.android.qualifiers.ApplicationContext;
31 
32 import java.io.File;
33 
34 import javax.inject.Inject;
35 import javax.inject.Singleton;
36 
37 /**
38  * Provides content from the partner customization apk on the device (if there is one).
39  */
40 
41 @Singleton
42 public class DefaultPartnerProvider implements PartnerProvider {
43 
44     private final String mPackageName;
45     private final Resources mResources;
46 
47     @Inject
DefaultPartnerProvider(@pplicationContext Context ctx)48     public DefaultPartnerProvider(@ApplicationContext Context ctx) {
49         Pair<String, Resources> apkInfo = findSystemApk(ctx.getPackageManager());
50         if (apkInfo != null) {
51             mPackageName = apkInfo.first;
52             mResources = apkInfo.second;
53         } else {
54             mPackageName = null;
55             mResources = null;
56         }
57     }
58 
59     /**
60      * Finds the partner customization APK in the system directory.
61      *
62      * @param pm
63      * @return Pair of the package name and the Resources for the APK, or null if the APK isn't found
64      * on the device.
65      */
66     @Nullable
findSystemApk(PackageManager pm)67     protected Pair<String, Resources> findSystemApk(PackageManager pm) {
68         final Intent intent = new Intent(PartnerProvider.ACTION_PARTNER_CUSTOMIZATION);
69         for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
70             if (info.activityInfo != null
71                     && (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
72                 final String packageName = info.activityInfo.packageName;
73                 try {
74                     final Resources res = pm.getResourcesForApplication(packageName);
75                     return Pair.create(packageName, res);
76                 } catch (NameNotFoundException e) {
77                     Log.w("DefaultPartnerProvider", "Failed to find resources for " + packageName);
78                 }
79             }
80         }
81         return null;
82     }
83 
84     @Override
getResources()85     public Resources getResources() {
86         return mResources;
87     }
88 
89     @Override
getLegacyWallpaperDirectory()90     public File getLegacyWallpaperDirectory() {
91         int resId = 0;
92         Resources res = getResources();
93         // Resources may be null if no partner customization APK has been placed on the system image, so
94         // check if null before calling Resources#getIdentifier.
95         if (res != null) {
96             resId = res.getIdentifier(PartnerProvider.RES_LEGACY_SYSTEM_WALLPAPER_DIR,
97                     "string", mPackageName);
98         }
99         return (resId != 0) ? new File(res.getString(resId)) : null;
100     }
101 
102     @Override
getPackageName()103     public String getPackageName() {
104         return mPackageName;
105     }
106 
107     @Override
shouldHideDefaultWallpaper()108     public boolean shouldHideDefaultWallpaper() {
109         Resources res = getResources();
110         // Resources may be null if no partner customization APK has been placed on the system image, so
111         // check if null before calling Resources#getIdentifier.
112         if (res != null) {
113             final int resId = res.getIdentifier(
114                     RES_DEFAULT_WALLPAPER_HIDDEN, /* defType */ "bool", mPackageName);
115             return resId != 0 && res.getBoolean(resId);
116         }
117         return false;
118     }
119 }
120