001/**
002 *
003 * Copyright © 2014-2021 Florian Schmaus
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smack.android;
018
019import java.util.List;
020
021import org.jivesoftware.smack.SmackConfiguration;
022import org.jivesoftware.smack.initializer.SmackInitializer;
023import org.jivesoftware.smack.util.stringencoder.Base64;
024import org.jivesoftware.smack.util.stringencoder.Base64UrlSafeEncoder;
025import org.jivesoftware.smack.util.stringencoder.android.AndroidBase64Encoder;
026import org.jivesoftware.smack.util.stringencoder.android.AndroidBase64UrlSafeEncoder;
027
028import android.content.Context;
029import org.apache.http.conn.ssl.StrictHostnameVerifier;
030import org.minidns.dnsserverlookup.android21.AndroidUsingLinkProperties;
031
032/**
033 * This class initialized Smack for you on Android. Unfortunately it can't do it automatically, you should call
034 * {@link #initialize(Context)} once before performing your first XMPP connection with Smack. Note that on Android 21 or
035 * higher you need to hold the ACCESS_NETWORK_STATE permission.
036 */
037public class AndroidSmackInitializer implements SmackInitializer {
038
039    @Override
040    // Android deprecated StrictHostnameVerifier in API level 22
041    @SuppressWarnings("deprecation")
042    public List<Exception> initialize() {
043        SmackConfiguration.setDefaultHostnameVerifier(new StrictHostnameVerifier());
044        Base64.setEncoder(AndroidBase64Encoder.INSTANCE);
045        Base64UrlSafeEncoder.setEncoder(AndroidBase64UrlSafeEncoder.INSTANCE);
046        return null;
047    }
048
049    /**
050     * Initializes Smack on Android. You should call this method fore performing your first XMPP connection with Smack.
051     *
052     * @param context an Android context.
053     * @since 4.3
054     */
055    public static void initialize(Context context) {
056        AndroidUsingLinkProperties.setup(context);
057    }
058}