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   1 /**
   2  * Copyright (c) 2010-2021 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.AbstractXMPPConnection;
  20 import org.jivesoftware.smack.ConnectionListener;
  21 import org.jivesoftware.smack.ReconnectionManager;
  22 import org.jivesoftware.smack.SmackException;
  23 import org.jivesoftware.smack.XMPPConnection;
  24 import org.jivesoftware.smack.XMPPException;
  25 import org.jivesoftware.smack.chat2.Chat;
  26 import org.jivesoftware.smack.chat2.ChatManager;
  27 import org.jivesoftware.smack.chat2.IncomingChatMessageListener;
  28 import org.jivesoftware.smack.packet.Message;
  29 import org.jivesoftware.smack.tcp.XMPPTCPConnection;
  30 import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
  31 import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
  32 import org.jivesoftware.smackx.disco.packet.DiscoverInfo.Identity;
  33 import org.jxmpp.jid.EntityBareJid;
  34 import org.jxmpp.jid.impl.JidCreate;
  35 import org.jxmpp.stringprep.XmppStringprepException;
  36 import org.openhab.binding.xmppclient.internal.handler.XMPPClientMessageSubscriber;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 /**
  41  * The {@link XMPPClient} is lib for handling XMPP connection and messaging
  42  *
  43  * @author Pavel Gololobov - Initial contribution
  44  */
  45 public class XMPPClient implements IncomingChatMessageListener, ConnectionListener {
  46     private final Logger logger = LoggerFactory.getLogger(XMPPClient.class);
  47     private AbstractXMPPConnection connection;
  48     private ChatManager chatManager;
  49     private Set<XMPPClientMessageSubscriber> subscribers = new HashSet<>();
  50
  51     public void subscribe(XMPPClientMessageSubscriber channel) {
  52         logger.debug("Channel {} subscribed", channel.getName());
  53         subscribers.add(channel);
  54     }
  55
  56     public void unsubscribe(XMPPClientMessageSubscriber channel) {
  57         logger.debug("Channel {} unsubscribed", channel.getName());
  58         subscribers.remove(channel);
  59     }
  60
  61     public void connect(String host, Integer port, String login, String domain, String password)
  62             throws XMPPException, SmackException, IOException {
  63         disconnect();
  64         String serverHost = domain;
  65         if ((host != null) && !host.isEmpty()) {
  66             serverHost = host;
  67         }
  68
  69         XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder() //
  70                 .setHost(serverHost) //
  71                 .setPort(port) //
  72                 .setUsernameAndPassword(login, password) //
  73                 .setXmppDomain(domain) //
  74                 .build();
  75
  76         connection = new XMPPTCPConnection(config);
  77         connection.addConnectionListener(this);
  78
  79         ReconnectionManager reconnectionManager = ReconnectionManager.getInstanceFor(connection);
  80         reconnectionManager.enableAutomaticReconnection();
  81
  82         Identity identity = new Identity("client", "openHAB", "bot");
  83         ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
  84         sdm.setIdentity(identity);
  85
  86         try {
  87             connection.connect().login();
  88         } catch (InterruptedException ex) {
  89         }
  90
  91         chatManager = ChatManager.getInstanceFor(connection);
  92         chatManager.addIncomingListener(this);
  93     }
  94
  95     public void disconnect() {
  96         if (connection != null) {
  97             connection.disconnect();
  98         }
  99     }
 100
 101     public void sendMessage(String to, String message) {
 102         if (connection == null) {
 103             logger.warn("XMPP connection is null");
 104             return;
 105         }
 106         if (chatManager == null) {
 107             logger.warn("XMPP chatManager is null");
 108             return;
 109         }
 110         try {
 111             EntityBareJid jid = JidCreate.entityBareFrom(to);
 112             Chat chat = chatManager.chatWith(jid);
 113             chat.send(message);
 114         } catch (XmppStringprepException | SmackException.NotConnectedException | InterruptedException e) {
 115             logger.info("XMPP message sending error", e);
 116         }
 117     }
 118
 119     @Override
 120     public void newIncomingMessage(EntityBareJid from, Message message, Chat chat) {
 121         logger.debug("XMPP {} says {}", from.asBareJid().toString(), message.getBody());
 122         for (XMPPClientMessageSubscriber subscriber : subscribers) {
 123             logger.debug("Push to subscriber {}", subscriber.getName());
 124             subscriber.processMessage(from.asBareJid().toString(), message.getBody());
 125         }
 126     }
 127
 128     @Override
 129     public void connected(XMPPConnection connection) {
 130         logger.debug("Connected to XMPP server.");
 131     }
 132
 133     @Override
 134     public void authenticated(XMPPConnection connection, boolean resumed) {
 135         logger.debug("Authenticated to XMPP server.");
 136     }
 137
 138     @Override
 139     public void connectionClosed() {
 140         logger.debug("XMPP connection was closed.");
 141     }
 142
 143     @Override
 144     public void connectionClosedOnError(Exception e) {
 145         logger.debug("Connection to XMPP server was lost.");
 146         if (connection != null) {
 147             connection.disconnect();
 148             try {
 149                 connection.connect().login();
 150             } catch (SmackException | IOException | XMPPException | InterruptedException ex) {
 151                 logger.info("XMPP connection error", ex);
 152             }
 153         }
 154     }
 155 }