1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 package com.android.settings.applications; 15 16 import android.content.Context; 17 import android.content.pm.PackageInfo; 18 import android.content.pm.PackageManager; 19 import android.content.pm.PackageManager.NameNotFoundException; 20 import android.content.pm.PermissionGroupInfo; 21 import android.content.pm.PermissionInfo; 22 import android.text.TextUtils; 23 import android.util.ArraySet; 24 import android.util.Log; 25 26 import com.android.settings.R; 27 import com.android.settings.core.BasePreferenceController; 28 29 import java.util.List; 30 import java.util.Set; 31 32 public class AppPermissionsPreferenceController extends BasePreferenceController { 33 34 private static final String TAG = "AppPermissionPrefCtrl"; 35 private static final String KEY_APP_PERMISSION_GROUPS = "manage_perms"; 36 private static final String[] PERMISSION_GROUPS = new String[] { 37 "android.permission-group.LOCATION", 38 "android.permission-group.MICROPHONE", 39 "android.permission-group.CAMERA", 40 "android.permission-group.SMS", 41 "android.permission-group.CONTACTS", 42 "android.permission-group.PHONE"}; 43 44 private static final int NUM_PERMISSION_TO_USE = 3; 45 46 private final PackageManager mPackageManager; 47 AppPermissionsPreferenceController(Context context)48 public AppPermissionsPreferenceController(Context context) { 49 super(context, KEY_APP_PERMISSION_GROUPS); 50 mPackageManager = context.getPackageManager(); 51 } 52 53 @Override getAvailabilityStatus()54 public int getAvailabilityStatus() { 55 return AVAILABLE; 56 } 57 58 /* 59 Summary text looks like: Apps using Permission1, Permission2, Permission3 60 The 3 permissions are the first three from the list which any app has granted: 61 Location, Microphone, Camera, Sms, Contacts, and Phone 62 */ 63 @Override getSummary()64 public CharSequence getSummary() { 65 final Set<String> permissions = getAllPermissionsInGroups(); 66 Set<String> grantedPermissionGroups = getGrantedPermissionGroups(permissions); 67 CharSequence summary = null; 68 int count = 0; 69 for (String group : PERMISSION_GROUPS) { 70 if (!grantedPermissionGroups.contains(group)) { 71 continue; 72 } 73 summary = concatSummaryText(summary, group); 74 if (++count >= NUM_PERMISSION_TO_USE) { 75 break; 76 } 77 } 78 return count > 0 ? mContext.getString(R.string.app_permissions_summary, summary) : null; 79 } 80 getGrantedPermissionGroups(Set<String> permissions)81 private Set<String> getGrantedPermissionGroups(Set<String> permissions) { 82 ArraySet<String> grantedPermissionGroups = new ArraySet<>(); 83 List<PackageInfo> installedPackages = 84 mPackageManager.getInstalledPackages(PackageManager.GET_PERMISSIONS); 85 for (PackageInfo installedPackage : installedPackages) { 86 if (installedPackage.permissions == null) { 87 continue; 88 } 89 for (PermissionInfo permissionInfo : installedPackage.permissions) { 90 if (permissions.contains(permissionInfo.name) 91 && !grantedPermissionGroups.contains(permissionInfo.group)) { 92 grantedPermissionGroups.add(permissionInfo.group); 93 } 94 } 95 } 96 return grantedPermissionGroups; 97 } 98 concatSummaryText(CharSequence currentSummary, String permission)99 private CharSequence concatSummaryText(CharSequence currentSummary, String permission) { 100 final String label = getPermissionGroupLabel(permission).toString().toLowerCase(); 101 if (TextUtils.isEmpty(currentSummary)) { 102 return label; 103 } 104 return mContext.getString(R.string.join_many_items_middle, currentSummary, label); 105 } 106 getPermissionGroupLabel(String group)107 private CharSequence getPermissionGroupLabel(String group) { 108 try { 109 final PermissionGroupInfo groupInfo = mPackageManager.getPermissionGroupInfo(group, 0); 110 return groupInfo.loadLabel(mPackageManager); 111 } catch (NameNotFoundException e) { 112 Log.e(TAG, "Error getting permissions label.", e); 113 } 114 return group; 115 } 116 getAllPermissionsInGroups()117 private Set<String> getAllPermissionsInGroups() { 118 ArraySet<String> result = new ArraySet<>(); 119 for (String group : PERMISSION_GROUPS) { 120 try { 121 final List<PermissionInfo> permissions = 122 mPackageManager.queryPermissionsByGroup(group, 0); 123 for (PermissionInfo permissionInfo : permissions) { 124 result.add(permissionInfo.name); 125 } 126 } catch (NameNotFoundException e) { 127 Log.e(TAG, "Error getting permissions in group " + group, e); 128 } 129 } 130 return result; 131 } 132 } 133