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Issue #1053 - Drop support Android and remove Fennec - Part 1a: Remove mobile/android
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/*
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Copyright 2012 KeepSafe Software Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package com.keepsafe.switchboard;
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import java.util.UUID;
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import android.content.Context;
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import android.content.SharedPreferences;
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/**
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* Generates a UUID and stores is persistent as in the apps shared preferences.
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*
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* @author Philipp Berner
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*/
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public class DeviceUuidFactory {
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protected static final String PREFS_FILE = "com.keepsafe.switchboard.uuid";
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protected static final String PREFS_DEVICE_ID = "device_id";
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private static UUID uuid = null;
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public 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
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.getSharedPreferences(PREFS_FILE, Context.MODE_PRIVATE);
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final String id = prefs.getString(PREFS_DEVICE_ID, null);
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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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} else {
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uuid = UUID.randomUUID();
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// Write the value out to the prefs file
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prefs.edit().putString(PREFS_DEVICE_ID, uuid.toString()).apply();
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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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* Returns a unique UUID for the current android device. As with all UUIDs,
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* this unique ID is "very highly likely" to be unique across all Android
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* devices. Much more so than ANDROID_ID is.
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*
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* The UUID is generated with <code>UUID.randomUUID()</code>.
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*
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* @return a UUID that may be used to uniquely identify your device for most
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* purposes.
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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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}
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