package com.basic.security.utils;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.content.pm.PackageManager;
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import android.os.Build;
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import android.os.Environment;
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import android.provider.Settings.Secure;
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import android.telephony.TelephonyManager;
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import android.text.TextUtils;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.io.UnsupportedEncodingException;
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import java.util.UUID;
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public class DeviceUuidFactory {
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private static final String DEVICE_UUID_FILE_NAME = ".tobindevid.conf";
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private static final String DEVICE_IMEI_FILE_NAME = ".tobinimei.conf";
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private static final String PREFS_FILE = "tobindevice_id.xml";
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private static final String PREFS_DEVICE_ID = "device_id";
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private static final String PREFS_IMEI = "imei";
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private static UUID uuid;
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private static String imei;
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private static DeviceUuidFactory deviceUuidFactory;
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private DeviceUuidFactory(Context context) {
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if (uuid == null) {
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synchronized (DeviceUuidFactory.class) {
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if (uuid == null) {
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final SharedPreferences prefs = context.getSharedPreferences(PREFS_FILE, 0);
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String id = prefs.getString(PREFS_DEVICE_ID, null);
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String imeiStr = prefs.getString(PREFS_IMEI, null);
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if (TextUtils.isEmpty(id)) {
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if (checkPermission(context, permission.WRITE_EXTERNAL_STORAGE)) {
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id = recoverFromSD(DEVICE_UUID_FILE_NAME);
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}
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}
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if (TextUtils.isEmpty(imeiStr)) {
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if (checkPermission(context, permission.WRITE_EXTERNAL_STORAGE)) {
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imeiStr = recoverFromSD(DEVICE_IMEI_FILE_NAME);
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}
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}
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if (!TextUtils.isEmpty(imeiStr)) {
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imei = imeiStr;
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prefs.edit().putString(PREFS_IMEI, imei).commit();
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if (checkPermission(context, permission.WRITE_EXTERNAL_STORAGE)) {
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saveToSD(imei, DEVICE_IMEI_FILE_NAME);
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}
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}
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if (id != null) {
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// Use the ids previously computed and stored in the prefs file
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uuid = UUID.fromString(id);
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prefs.edit().putString(PREFS_DEVICE_ID, uuid.toString()).commit();
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if (checkPermission(context, permission.WRITE_EXTERNAL_STORAGE)) {
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saveToSD(uuid.toString(), DEVICE_UUID_FILE_NAME);
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}
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} else {
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final String androidId = Secure.getString(context.getContentResolver(), Secure.ANDROID_ID);
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String tmDevice, tmSerial;
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tmDevice = "";
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tmSerial = "";
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try {
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if (checkPermission(context, permission.READ_PHONE_STATE)) {
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TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
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tmDevice = tm.getDeviceId();
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tmSerial = tm.getSimSerialNumber();
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}
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} catch (SecurityException ex) {
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ex.printStackTrace();
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}
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if (TextUtils.isEmpty(tmDevice) || TextUtils.isEmpty(tmSerial) || tmDevice.equals("000000000000000")) {
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if (!TextUtils.isEmpty(androidId) && !"9774d56d682e549c".equals(androidId) && Build.VERSION.SDK_INT <= Build.VERSION_CODES.O) {
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uuid = UUID.nameUUIDFromBytes(androidId.getBytes());
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} else {
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uuid = UUID.randomUUID();
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}
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} else {
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uuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
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}
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if (!TextUtils.isEmpty(tmDevice)) {
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imei = tmDevice;
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prefs.edit().putString(PREFS_IMEI, imei).commit();
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if (checkPermission(context, permission.WRITE_EXTERNAL_STORAGE)) {
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saveToSD(imei, DEVICE_IMEI_FILE_NAME);
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}
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}
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// Write the value out to the prefs file
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prefs.edit().putString(PREFS_DEVICE_ID, uuid.toString()).commit();
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if (checkPermission(context, permission.WRITE_EXTERNAL_STORAGE)) {
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saveToSD(uuid.toString(), DEVICE_UUID_FILE_NAME);
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}
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}
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}
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}
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}
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}
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public static DeviceUuidFactory getInstance(Context context) {
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if (deviceUuidFactory == null) {
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deviceUuidFactory = new DeviceUuidFactory(context);
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}
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return deviceUuidFactory;
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}
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private static void saveToSD(String uuid, String fileName) {
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String dirPath = Environment.getExternalStorageDirectory().getAbsolutePath();
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File targetFile = new File(dirPath, fileName);
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if (targetFile != null) {
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if (!targetFile.exists()) {
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OutputStreamWriter osw;
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try {
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osw = new OutputStreamWriter(new FileOutputStream(targetFile), "utf-8");
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try {
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osw.write(uuid);
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osw.flush();
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osw.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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}
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}
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}
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}
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private static String recoverFromSD(String fileName) {
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try {
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String dirPath = Environment.getExternalStorageDirectory().getAbsolutePath();
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File dir = new File(dirPath);
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File uuidFile = new File(dir, fileName);
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if (!dir.exists() || !uuidFile.exists()) {
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return null;
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}
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FileReader fileReader = new FileReader(uuidFile);
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StringBuilder sb = new StringBuilder();
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char[] buffer = new char[100];
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int readCount;
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while ((readCount = fileReader.read(buffer)) > 0) {
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sb.append(buffer, 0, readCount);
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}
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fileReader.close();
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return sb.toString();
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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public UUID getDeviceUuid() {
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return uuid;
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}
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private boolean checkPermission(Context context, permission permName) {
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int perm = context.checkCallingOrSelfPermission("android.permission." + permName.toString());
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return perm == PackageManager.PERMISSION_GRANTED;
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}
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private enum permission {
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READ_PHONE_STATE,
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WRITE_EXTERNAL_STORAGE
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}
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}
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