packages_apps_Settings/src/com/android/settings/safetycenter/LockScreenSafetySource.java

/*
 * Copyright (C) 2022 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.settings.safetycenter;

import static android.safetycenter.SafetyEvent.SAFETY_EVENT_TYPE_SOURCE_STATE_CHANGED;

import android.app.PendingIntent;
import android.app.settings.SettingsEnums;
import android.content.Context;
import android.content.Intent;
import android.os.UserHandle;
import android.safetycenter.SafetyEvent;
import android.safetycenter.SafetySourceData;
import android.safetycenter.SafetySourceIssue;
import android.safetycenter.SafetySourceStatus;
import android.safetycenter.SafetySourceStatus.IconAction;

import com.android.settings.R;
import com.android.settings.security.ScreenLockPreferenceDetailsUtils;
import com.android.settingslib.RestrictedLockUtils;
import com.android.settingslib.RestrictedLockUtilsInternal;

/** Lock Screen Safety Source for Safety Center. */
public final class LockScreenSafetySource {

    public static final String SAFETY_SOURCE_ID = "AndroidLockScreen";
    public static final String NO_SCREEN_LOCK_ISSUE_ID = "NoScreenLockIssue";
    public static final String NO_SCREEN_LOCK_ISSUE_TYPE_ID = "NoScreenLockIssueType";
    public static final String SET_SCREEN_LOCK_ACTION_ID = "SetScreenLockAction";

    private static final int REQUEST_CODE_SCREEN_LOCK = 1;
    private static final int REQUEST_CODE_SCREEN_LOCK_SETTINGS = 2;

    private LockScreenSafetySource() {
    }

    /** Sets lock screen safety data for Safety Center. */
    public static void setSafetySourceData(Context context,
            ScreenLockPreferenceDetailsUtils screenLockPreferenceDetailsUtils,
            SafetyEvent safetyEvent) {
        if (!SafetyCenterManagerWrapper.get().isEnabled(context)) {
            return;
        }

        if (!screenLockPreferenceDetailsUtils.isAvailable()) {
            return;
        }

        final int userId = UserHandle.myUserId();
        final RestrictedLockUtils.EnforcedAdmin admin = RestrictedLockUtilsInternal
                .checkIfPasswordQualityIsSet(context, userId);
        final PendingIntent pendingIntent = createPendingIntent(context,
                screenLockPreferenceDetailsUtils.getLaunchChooseLockGenericFragmentIntent(
                        SettingsEnums.SAFETY_CENTER), REQUEST_CODE_SCREEN_LOCK);
        final IconAction gearMenuIconAction = createGearMenuIconAction(context,
                screenLockPreferenceDetailsUtils);
        final boolean enabled =
                !screenLockPreferenceDetailsUtils.isPasswordQualityManaged(userId, admin);
        final boolean isLockPatternSecure = screenLockPreferenceDetailsUtils.isLockPatternSecure();
        final int severityLevel = enabled
                ? isLockPatternSecure
                        ? SafetySourceData.SEVERITY_LEVEL_INFORMATION
                        : SafetySourceData.SEVERITY_LEVEL_RECOMMENDATION
                : SafetySourceData.SEVERITY_LEVEL_UNSPECIFIED;


        final SafetySourceStatus status = new SafetySourceStatus.Builder(
                context.getString(R.string.unlock_set_unlock_launch_picker_title),
                screenLockPreferenceDetailsUtils.getSummary(UserHandle.myUserId()),
                severityLevel)
                .setPendingIntent(pendingIntent)
                .setEnabled(enabled)
                .setIconAction(gearMenuIconAction).build();
        final SafetySourceData.Builder safetySourceDataBuilder =
                new SafetySourceData.Builder().setStatus(status);
        if (enabled && !isLockPatternSecure) {
            safetySourceDataBuilder.addIssue(createNoScreenLockIssue(context, pendingIntent));
        }
        final SafetySourceData safetySourceData = safetySourceDataBuilder.build();

        SafetyCenterManagerWrapper.get().setSafetySourceData(
                context,
                SAFETY_SOURCE_ID,
                safetySourceData,
                safetyEvent
        );
    }

    /** Notifies Safety Center of a change in lock screen settings. */
    public static void onLockScreenChange(Context context) {
        setSafetySourceData(
                context, new ScreenLockPreferenceDetailsUtils(context),
                new SafetyEvent.Builder(SAFETY_EVENT_TYPE_SOURCE_STATE_CHANGED).build());

        // Also send refreshed safety center data for biometrics, since changing lockscreen settings
        // can unset biometrics.
        BiometricsSafetySource.onBiometricsChanged(context);
    }

    private static IconAction createGearMenuIconAction(Context context,
            ScreenLockPreferenceDetailsUtils screenLockPreferenceDetailsUtils) {
        return screenLockPreferenceDetailsUtils.shouldShowGearMenu() ? new IconAction(
                IconAction.ICON_TYPE_GEAR,
                createPendingIntent(context,
                        screenLockPreferenceDetailsUtils.getLaunchScreenLockSettingsIntent(
                                SettingsEnums.SAFETY_CENTER),
                        REQUEST_CODE_SCREEN_LOCK_SETTINGS))
                : null;
    }

    private static PendingIntent createPendingIntent(Context context, Intent intent,
            int requestCode) {
        return PendingIntent
                .getActivity(
                        context,
                        requestCode,
                        intent,
                        PendingIntent.FLAG_IMMUTABLE);
    }

    private static SafetySourceIssue createNoScreenLockIssue(Context context,
            PendingIntent pendingIntent) {
        final SafetySourceIssue.Action action = new SafetySourceIssue.Action.Builder(
                SET_SCREEN_LOCK_ACTION_ID,
                context.getString(R.string.no_screen_lock_issue_action_label),
                pendingIntent).build();
        return new SafetySourceIssue.Builder(
                NO_SCREEN_LOCK_ISSUE_ID,
                context.getString(R.string.no_screen_lock_issue_title),
                context.getString(R.string.no_screen_lock_issue_summary),
                SafetySourceData.SEVERITY_LEVEL_RECOMMENDATION,
                NO_SCREEN_LOCK_ISSUE_TYPE_ID)
                .setIssueCategory(SafetySourceIssue.ISSUE_CATEGORY_DEVICE)
                .addAction(action).build();
    }
}