FroyoSupport.java

/*******************************************************************************
 * Created by Carlos Yaconi
 * Copyright 2015 Prey Inc. All rights reserved.
 * License: GPLv3
 * Full license at "/LICENSE"
 ******************************************************************************/
package com.prey.backwardcompatibility;

import android.annotation.TargetApi;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.telephony.TelephonyManager;

import com.prey.PreyConfig;
import com.prey.PreyLogger;
import com.prey.exceptions.PreyException;
import com.prey.receivers.PreyDeviceAdmin;

@TargetApi(Build.VERSION_CODES.FROYO)
public class FroyoSupport {

    private static FroyoSupport _instance;
    private Context ctx;
    private DevicePolicyManager policyManager;
    ComponentName deviceAdmin;

    public static FroyoSupport getInstance(Context context) {
        if (_instance == null) {
            _instance = new FroyoSupport(context);
        }
        return _instance;
    }

    private FroyoSupport(Context context) {
        policyManager = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
        deviceAdmin = new ComponentName(context, PreyDeviceAdmin.class);
        ctx = context;
    }

    public void changePasswordAndLock(String newPass, boolean lock) throws PreyException{
        try {
            if (isAdminActive()) {
                try {
                    policyManager.setPasswordMinimumLength(deviceAdmin, 0);
                    policyManager.setPasswordQuality(deviceAdmin, DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED);
                } catch (Exception e1) {
                }

                boolean resultLocK = policyManager.resetPassword(newPass, DevicePolicyManager.RESET_PASSWORD_REQUIRE_ENTRY);

                if ("".equals(newPass))
                    android.provider.Settings.System.putInt(ctx.getContentResolver(), android.provider.Settings.System.LOCK_PATTERN_ENABLED, 0);

                PreyLogger.i("resultLocK:" + resultLocK);
                if (lock)
                    lockNow();
            }
        } catch (Exception e) {
            throw new PreyException("This device couldn't be locked");
        }
    }


    public void lockNow() {
        if (isAdminActive())
            policyManager.lockNow();
    }

    public boolean isAdminActive() {
        return policyManager.isAdminActive(deviceAdmin);
    }

    public void removeAdminPrivileges() {
        policyManager.removeActiveAdmin(deviceAdmin);
    }

    public Intent getAskForAdminPrivilegesIntent() {
        PreyConfig.getPreyConfig(ctx).setSecurityPrivilegesAlreadyPrompted(true);
        Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
        intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, deviceAdmin);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
        //intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, getText(R.string.device_admin_prompt));
        return intent;
    }

    public void wipe() {
        if (isAdminActive())
            policyManager.wipeData(0);
    }

    public static boolean supportSMS(Context ctx) {
        TelephonyManager telephonyManager1 = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE);
        boolean isPhone = !(telephonyManager1.getPhoneType() == TelephonyManager.PHONE_TYPE_NONE);
        return isPhone;
    }

}