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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settingslib;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import androidx.annotation.Nullable;
import java.util.Objects;
/**
* Utility class to host methods usable in adding a restricted padlock icon and showing admin
* support message dialog.
*/
public class RestrictedLockUtils {
public static EnforcedAdmin getProfileOrDeviceOwner(Context context, UserHandle user) {
return getProfileOrDeviceOwner(context, null, user);
}
public static EnforcedAdmin getProfileOrDeviceOwner(
Context context, String enforcedRestriction, UserHandle user) {
if (user == null) {
return null;
}
final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(
Context.DEVICE_POLICY_SERVICE);
if (dpm == null) {
return null;
}
Context userContext;
try {
userContext = context.createPackageContextAsUser(context.getPackageName(), 0, user);
} catch (PackageManager.NameNotFoundException e) {
throw new IllegalStateException(e);
}
ComponentName adminComponent = userContext.getSystemService(
DevicePolicyManager.class).getProfileOwner();
if (adminComponent != null) {
return new EnforcedAdmin(adminComponent, enforcedRestriction, user);
}
if (Objects.equals(dpm.getDeviceOwnerUser(), user)) {
adminComponent = dpm.getDeviceOwnerComponentOnAnyUser();
if (adminComponent != null) {
return new EnforcedAdmin(adminComponent, enforcedRestriction, user);
}
}
return null;
}
/**
* Send the intent to trigger the {@code android.settings.ShowAdminSupportDetailsDialog}.
*/
public static void sendShowAdminSupportDetailsIntent(Context context, EnforcedAdmin admin) {
final Intent intent = getShowAdminSupportDetailsIntent(context, admin);
int targetUserId = UserHandle.myUserId();
if (admin != null) {
if (admin.user != null
&& isCurrentUserOrProfile(context, admin.user.getIdentifier())) {
targetUserId = admin.user.getIdentifier();
}
intent.putExtra(DevicePolicyManager.EXTRA_RESTRICTION, admin.enforcedRestriction);
}
context.startActivityAsUser(intent, UserHandle.of(targetUserId));
}
public static Intent getShowAdminSupportDetailsIntent(Context context, EnforcedAdmin admin) {
final Intent intent = new Intent(Settings.ACTION_SHOW_ADMIN_SUPPORT_DETAILS);
if (admin != null) {
if (admin.component != null) {
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, admin.component);
}
intent.putExtra(Intent.EXTRA_USER, admin.user);
}
return intent;
}
public static boolean isCurrentUserOrProfile(Context context, int userId) {
UserManager um = context.getSystemService(UserManager.class);
return um.getUserProfiles().contains(UserHandle.of(userId));
}
public static class EnforcedAdmin {
@Nullable
public ComponentName component = null;
/**
* The restriction enforced by admin. It could be any user restriction or policy like
* {@link DevicePolicyManager#POLICY_DISABLE_CAMERA}.
*/
@Nullable
public String enforcedRestriction = null;
@Nullable
public UserHandle user = null;
// We use this to represent the case where a policy is enforced by multiple admins.
public final static EnforcedAdmin MULTIPLE_ENFORCED_ADMIN = new EnforcedAdmin();
public static EnforcedAdmin createDefaultEnforcedAdminWithRestriction(
String enforcedRestriction) {
EnforcedAdmin enforcedAdmin = new EnforcedAdmin();
enforcedAdmin.enforcedRestriction = enforcedRestriction;
return enforcedAdmin;
}
public EnforcedAdmin(ComponentName component, UserHandle user) {
this.component = component;
this.user = user;
}
public EnforcedAdmin(ComponentName component, String enforcedRestriction, UserHandle user) {
this.component = component;
this.enforcedRestriction = enforcedRestriction;
this.user = user;
}
public EnforcedAdmin(EnforcedAdmin other) {
if (other == null) {
throw new IllegalArgumentException();
}
this.component = other.component;
this.enforcedRestriction = other.enforcedRestriction;
this.user = other.user;
}
public EnforcedAdmin() {
}
/**
* Combines two {@link EnforcedAdmin} into one: if one of them is null, then just return
* the other. If both of them are the same, then return that. Otherwise return the symbolic
* {@link #MULTIPLE_ENFORCED_ADMIN}
*/
public static EnforcedAdmin combine(EnforcedAdmin admin1, EnforcedAdmin admin2) {
if (admin1 == null) {
return admin2;
}
if (admin2 == null) {
return admin1;
}
if (admin1.equals(admin2)) {
return admin1;
}
if (!admin1.enforcedRestriction.equals(admin2.enforcedRestriction)) {
throw new IllegalArgumentException(
"Admins with different restriction cannot be combined");
}
return MULTIPLE_ENFORCED_ADMIN;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
EnforcedAdmin that = (EnforcedAdmin) o;
return Objects.equals(user, that.user) &&
Objects.equals(component, that.component) &&
Objects.equals(enforcedRestriction, that.enforcedRestriction);
}
@Override
public int hashCode() {
return Objects.hash(component, enforcedRestriction, user);
}
@Override
public String toString() {
return "EnforcedAdmin{" +
"component=" + component +
", enforcedRestriction='" + enforcedRestriction +
", user=" + user +
'}';
}
}
}
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