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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.role.controller.behavior;
import android.app.admin.DevicePolicyManager;
import android.app.admin.ManagedSubscriptionsPolicy;
import android.content.Context;
import android.os.Process;
import android.os.UserHandle;
import android.os.UserManager;
import android.telephony.TelephonyManager;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.android.modules.utils.build.SdkLevel;
import com.android.role.controller.model.Permissions;
import com.android.role.controller.model.Role;
import com.android.role.controller.model.RoleBehavior;
import com.android.role.controller.util.CollectionUtils;
import com.android.role.controller.util.PackageUtils;
import com.android.role.controller.util.UserUtils;
import java.util.Arrays;
import java.util.List;
/**
* Class for behavior of the SMS role.
*
* @see com.android.settings.applications.DefaultAppSettings
* @see com.android.settings.applications.defaultapps.DefaultSmsPreferenceController
* @see com.android.settings.applications.defaultapps.DefaultSmsPicker
*/
public class SmsRoleBehavior implements RoleBehavior {
/**
* Permissions to be granted if the application fulfilling the SMS role is also a system app.
*/
private static final List<String> SYSTEM_SMS_PERMISSIONS = Arrays.asList(
android.Manifest.permission.PERFORM_IMS_SINGLE_REGISTRATION,
android.Manifest.permission.ACCESS_RCS_USER_CAPABILITY_EXCHANGE
);
@Override
public boolean isAvailableAsUser(@NonNull Role role, @NonNull UserHandle user,
@NonNull Context context) {
if (SdkLevel.isAtLeastU()) {
if (UserUtils.isCloneProfile(user, context)) {
return false;
}
// If work profile telephony is not enabled, there is no reason for sms role to be
// available in work profile. Given that you can't send or receive work message without
// work profile telephony being enabled.
// Also when work profile telephony gets enabled, dialer/sms app gets installed in to
// work profile, which would trigger this function and hence sms role getting
// enabled at the right point of time.
if (UserUtils.isManagedProfile(user, context)) {
DevicePolicyManager devicePolicyManager = context.getSystemService(
DevicePolicyManager.class);
if (devicePolicyManager.getManagedSubscriptionsPolicy().getPolicyType()
!= ManagedSubscriptionsPolicy.TYPE_ALL_MANAGED_SUBSCRIPTIONS) {
return false;
}
}
} else {
if (UserUtils.isProfile(user, context)) {
return false;
}
}
UserManager userManager = context.getSystemService(UserManager.class);
if (userManager.isRestrictedProfile(user)) {
return false;
}
TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class);
if (!telephonyManager.isSmsCapable()
// Ensure sms role is present on car despite !isSmsCapable config (b/132972702)
&& role.getDefaultHolders(context).isEmpty()) {
return false;
}
return true;
}
@Nullable
@Override
public String getFallbackHolder(@NonNull Role role, @NonNull Context context) {
List<String> defaultPackageNames = role.getDefaultHolders(context);
if (!defaultPackageNames.isEmpty()) {
return defaultPackageNames.get(0);
}
// TODO(b/132916161): This was the previous behavior, however this may allow any third-party
// app to suddenly become the default SMS app and get the permissions, if no system default
// SMS app is available.
List<String> qualifyingPackageNames = role.getQualifyingPackagesAsUser(
Process.myUserHandle(), context);
return CollectionUtils.firstOrNull(qualifyingPackageNames);
}
@Override
public void grant(@NonNull Role role, @NonNull String packageName, @NonNull Context context) {
if (SdkLevel.isAtLeastS() && PackageUtils.isSystemPackage(packageName, context)) {
Permissions.grant(packageName, SYSTEM_SMS_PERMISSIONS, false, false,
true, false, false, context);
}
}
@Override
public void revoke(@NonNull Role role, @NonNull String packageName,
@NonNull Context context) {
if (SdkLevel.isAtLeastS()) {
Permissions.revoke(packageName, SYSTEM_SMS_PERMISSIONS, true, false, false, context);
}
}
}
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