Merge "Throw an exception in RoR api on no-pin case"

import android.annotation.SuppressLint;

import android.annotation.SystemApi;

import android.annotation.SystemService;

import android.app.KeyguardManager;

import android.app.PendingIntent;

import android.compat.annotation.UnsupportedAppUsage;

import android.content.BroadcastReceiver;

    /**

     * Prepare to apply an unattended update by asking the user for their Lock Screen Knowledge

     * Factor (LSKF). If supplied, the {@code intentSender} will be called when the system is setup

     * and ready to apply the OTA. This API is expected to handle requests from multiple clients

     * simultaneously, e.g. from ota and mainline.

     * and ready to apply the OTA. <p>

     *

     * <p> The behavior of multi-client Resume on Reboot works as follows

     * <p> If the device doesn't setup a lock screen, i.e. by checking

     * {@link KeyguardManager#isKeyguardSecure()}, this API call will fail and throw an exception.

     * Callers are expected to use {@link PowerManager#reboot(String)} directly without going

     * through the RoR flow. <p>

     *

     * <p>  This API is expected to handle requests from multiple clients simultaneously, e.g.

     * from ota and mainline. The behavior of multi-client Resume on Reboot works as follows

     * <li> Each client should call this function to prepare for Resume on Reboot before calling

     *      {@link #rebootAndApply(Context, String, boolean)} </li>

     * <li> One client cannot clear the Resume on Reboot preparation of another client. </li>

        if (updateToken == null) {

            throw new NullPointerException("updateToken == null");

        }

        KeyguardManager keyguardManager = context.getSystemService(KeyguardManager.class);

        if (keyguardManager == null || !keyguardManager.isDeviceSecure()) {

            throw new IOException("Failed to request LSKF because the device doesn't have a"

                    + " lock screen. ");

        }

        RecoverySystem rs = (RecoverySystem) context.getSystemService(Context.RECOVERY_SERVICE);

        if (!rs.requestLskf(context.getPackageName(), intentSender)) {

            throw new IOException("preparation for update failed");