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   1 /**
   2  * Copyright (c) 2010-2020 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.xmppclient.internal;
  14
  15 import java.io.IOException;
  16 import java.util.HashSet;
  17 import java.util.Set;
  18
  19 import org.jivesoftware.smack.*;
  20 import org.jivesoftware.smack.chat2.Chat;
  21 import org.jivesoftware.smack.chat2.ChatManager;
  22 import org.jivesoftware.smack.chat2.IncomingChatMessageListener;
  23 import org.jivesoftware.smack.packet.Message;
  24 import org.jivesoftware.smack.tcp.XMPPTCPConnection;
  25 import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
  26 import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
  27 import org.jivesoftware.smackx.disco.packet.DiscoverInfo.Identity;
  28 import org.jxmpp.jid.EntityBareJid;
  29 import org.jxmpp.jid.impl.JidCreate;
  30 import org.jxmpp.stringprep.XmppStringprepException;
  31 import org.openhab.binding.xmppclient.handler.XMPPClientMessageSubscriber;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * The {@link XMPPClient} is lib for handling XMPP connection and messaging
  37  *
  38  * @author Pavel Gololobov - Initial contribution
  39  */
  40 public class XMPPClient implements IncomingChatMessageListener, ConnectionListener {
  41     private final Logger logger = LoggerFactory.getLogger(XMPPClient.class);
  42     private AbstractXMPPConnection connection;
  43     private ChatManager chatManager;
  44     private Set<XMPPClientMessageSubscriber> subscribers = new HashSet<>();
  45
  46     public void subscribe(XMPPClientMessageSubscriber channel) {
  47         logger.debug("Channel {} subscribed", channel.getName());
  48         subscribers.add(channel);
  49     }
  50
  51     public void unsubscribe(XMPPClientMessageSubscriber channel) {
  52         logger.debug("Channel {} unsubscribed", channel.getName());
  53         subscribers.remove(channel);
  54     }
  55
  56     public void connect(String host, Integer port, String login, String domain, String password)
  57             throws XMPPException, SmackException, IOException {
  58         disconnect();
  59         String serverHost = domain;
  60         if ((host != null) && !host.isEmpty()) {
  61             serverHost = host;
  62         }
  63
  64         XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder() //
  65                 .setHost(serverHost) //
  66                 .setPort(port) //
  67                 .setUsernameAndPassword(login, password) //
  68                 .setXmppDomain(domain) //
  69                 .build();
  70
  71         connection = new XMPPTCPConnection(config);
  72         connection.addConnectionListener(this);
  73
  74         ReconnectionManager reconnectionManager = ReconnectionManager.getInstanceFor(connection);
  75         reconnectionManager.enableAutomaticReconnection();
  76
  77         Identity identity = new Identity("client", "openHAB", "bot");
  78         ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
  79         sdm.setIdentity(identity);
  80
  81         try {
  82             connection.connect().login();
  83         } catch (InterruptedException ex) {
  84         }
  85
  86         chatManager = ChatManager.getInstanceFor(connection);
  87         chatManager.addIncomingListener(this);
  88     }
  89
  90     public void disconnect() {
  91         if (connection != null) {
  92             connection.disconnect();
  93         }
  94     }
  95
  96     public void sendMessage(String to, String message) {
  97         if (connection == null) {
  98             logger.warn("XMPP connection is null");
  99             return;
 100         }
 101         if (chatManager == null) {
 102             logger.warn("XMPP chatManager is null");
 103             return;
 104         }
 105         try {
 106             EntityBareJid jid = JidCreate.entityBareFrom(to);
 107             Chat chat = chatManager.chatWith(jid);
 108             chat.send(message);
 109         } catch (XmppStringprepException | SmackException.NotConnectedException | InterruptedException e) {
 110             logger.info("XMPP message sending error", e);
 111         }
 112     }
 113
 114     @Override
 115     public void newIncomingMessage(EntityBareJid from, Message message, Chat chat) {
 116         logger.debug("XMPP {} says {}", from.asBareJid().toString(), message.getBody());
 117         for (XMPPClientMessageSubscriber subscriber : subscribers) {
 118             logger.debug("Push to subscriber {}", subscriber.getName());
 119             subscriber.processMessage(from.asBareJid().toString(), message.getBody());
 120         }
 121     }
 122
 123     @Override
 124     public void connected(XMPPConnection connection) {
 125         logger.debug("Connected to XMPP server.");
 126     }
 127
 128     @Override
 129     public void authenticated(XMPPConnection connection, boolean resumed) {
 130         logger.debug("Authenticated to XMPP server.");
 131     }
 132
 133     @Override
 134     public void connectionClosed() {
 135         logger.debug("XMPP connection was closed.");
 136     }
 137
 138     @Override
 139     public void connectionClosedOnError(Exception e) {
 140         logger.debug("Connection to XMPP server was lost.");
 141         if (connection != null) {
 142             connection.disconnect();
 143             try {
 144                 connection.connect().login();
 145             } catch (SmackException | IOException | XMPPException | InterruptedException ex) {
 146                 logger.info("XMPP connection error", ex);
 147             }
 148         }
 149     }
 150 }