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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.remoteopenhab.internal;
  14
  15 import java.net.Socket;
  16 import java.security.KeyManagementException;
  17 import java.security.NoSuchAlgorithmException;
  18 import java.security.cert.CertificateException;
  19 import java.security.cert.X509Certificate;
  20 import java.util.Set;
  21 import java.util.stream.Collectors;
  22 import java.util.stream.Stream;
  23
  24 import javax.net.ssl.SSLContext;
  25 import javax.net.ssl.SSLEngine;
  26 import javax.net.ssl.TrustManager;
  27 import javax.net.ssl.X509ExtendedTrustManager;
  28 import javax.ws.rs.client.ClientBuilder;
  29
  30 import org.eclipse.jdt.annotation.NonNullByDefault;
  31 import org.eclipse.jdt.annotation.Nullable;
  32 import org.eclipse.jetty.client.HttpClient;
  33 import org.openhab.binding.remoteopenhab.internal.handler.RemoteopenhabBridgeHandler;
  34 import org.openhab.binding.remoteopenhab.internal.handler.RemoteopenhabThingHandler;
  35 import org.openhab.core.config.core.Configuration;
  36 import org.openhab.core.io.net.http.HttpClientFactory;
  37 import org.openhab.core.thing.Bridge;
  38 import org.openhab.core.thing.Thing;
  39 import org.openhab.core.thing.ThingTypeUID;
  40 import org.openhab.core.thing.ThingUID;
  41 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  42 import org.openhab.core.thing.binding.ThingHandler;
  43 import org.openhab.core.thing.binding.ThingHandlerFactory;
  44 import org.osgi.service.component.ComponentContext;
  45 import org.osgi.service.component.annotations.Activate;
  46 import org.osgi.service.component.annotations.Component;
  47 import org.osgi.service.component.annotations.Reference;
  48 import org.osgi.service.jaxrs.client.SseEventSourceFactory;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51
  52 import com.google.gson.FieldNamingPolicy;
  53 import com.google.gson.Gson;
  54 import com.google.gson.GsonBuilder;
  55
  56 /**
  57  * The {@link RemoteopenhabHandlerFactory} is responsible for creating things and thing
  58  * handlers.
  59  *
  60  * @author Laurent Garnier - Initial contribution
  61  */
  62 @NonNullByDefault
  63 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.remoteopenhab")
  64 public class RemoteopenhabHandlerFactory extends BaseThingHandlerFactory {
  65
  66     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Stream
  67             .concat(RemoteopenhabBindingConstants.SUPPORTED_BRIDGE_TYPES_UIDS.stream(),
  68                     RemoteopenhabBindingConstants.SUPPORTED_THING_TYPES_UIDS.stream())
  69             .collect(Collectors.toSet());
  70
  71     private final Logger logger = LoggerFactory.getLogger(RemoteopenhabHandlerFactory.class);
  72
  73     private final HttpClient httpClient;
  74     private final ClientBuilder clientBuilder;
  75     private final SseEventSourceFactory eventSourceFactory;
  76     private final RemoteopenhabChannelTypeProvider channelTypeProvider;
  77     private final RemoteopenhabStateDescriptionOptionProvider stateDescriptionProvider;
  78     private final Gson jsonParser;
  79
  80     private HttpClient httpClientTrustingCert;
  81
  82     @Activate
  83     public RemoteopenhabHandlerFactory(final @Reference HttpClientFactory httpClientFactory,
  84             final @Reference ClientBuilder clientBuilder, final @Reference SseEventSourceFactory eventSourceFactory,
  85             final @Reference RemoteopenhabChannelTypeProvider channelTypeProvider,
  86             final @Reference RemoteopenhabStateDescriptionOptionProvider stateDescriptionProvider) {
  87         this.httpClient = httpClientFactory.getCommonHttpClient();
  88         this.httpClientTrustingCert = httpClientFactory.createHttpClient(RemoteopenhabBindingConstants.BINDING_ID);
  89         this.clientBuilder = clientBuilder;
  90         this.eventSourceFactory = eventSourceFactory;
  91         this.channelTypeProvider = channelTypeProvider;
  92         this.stateDescriptionProvider = stateDescriptionProvider;
  93         this.jsonParser = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.IDENTITY).create();
  94
  95         try {
  96             SSLContext sslContext = SSLContext.getInstance("SSL");
  97
  98             TrustManager[] trustAllCerts = new TrustManager[] { new X509ExtendedTrustManager() {
  99                 @Override
 100                 public void checkClientTrusted(X509Certificate @Nullable [] chain, @Nullable String authType)
 101                         throws CertificateException {
 102                 }
 103
 104                 @Override
 105                 public void checkServerTrusted(X509Certificate @Nullable [] chain, @Nullable String authType)
 106                         throws CertificateException {
 107                 }
 108
 109                 @Override
 110                 public X509Certificate @Nullable [] getAcceptedIssuers() {
 111                     return null;
 112                 }
 113
 114                 @Override
 115                 public void checkClientTrusted(X509Certificate @Nullable [] chain, @Nullable String authType,
 116                         @Nullable Socket socket) throws CertificateException {
 117                 }
 118
 119                 @Override
 120                 public void checkServerTrusted(X509Certificate @Nullable [] chain, @Nullable String authType,
 121                         @Nullable Socket socket) throws CertificateException {
 122                 }
 123
 124                 @Override
 125                 public void checkClientTrusted(X509Certificate @Nullable [] chain, @Nullable String authType,
 126                         @Nullable SSLEngine engine) throws CertificateException {
 127                 }
 128
 129                 @Override
 130                 public void checkServerTrusted(X509Certificate @Nullable [] chain, @Nullable String authType,
 131                         @Nullable SSLEngine engine) throws CertificateException {
 132                 }
 133             } };
 134             sslContext.init(null, trustAllCerts, null);
 135
 136             this.httpClientTrustingCert.getSslContextFactory().setSslContext(sslContext);
 137         } catch (NoSuchAlgorithmException e) {
 138             logger.warn("An exception occurred while requesting the SSL encryption algorithm : '{}'", e.getMessage(),
 139                     e);
 140         } catch (KeyManagementException e) {
 141             logger.warn("An exception occurred while initialising the SSL context : '{}'", e.getMessage(), e);
 142         }
 143     }
 144
 145     @Override
 146     protected void activate(ComponentContext componentContext) {
 147         super.activate(componentContext);
 148         try {
 149             httpClientTrustingCert.start();
 150         } catch (Exception e) {
 151             logger.warn("Unable to start Jetty HttpClient", e);
 152         }
 153     }
 154
 155     @Override
 156     protected void deactivate(ComponentContext componentContext) {
 157         try {
 158             httpClientTrustingCert.stop();
 159         } catch (Exception e) {
 160             logger.warn("Unable to stop Jetty HttpClient", e);
 161         }
 162         super.deactivate(componentContext);
 163     }
 164
 165     /**
 166      * The things this factory supports creating.
 167      */
 168     @Override
 169     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
 170         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
 171     }
 172
 173     @Override
 174     public @Nullable Thing createThing(ThingTypeUID thingTypeUID, Configuration configuration,
 175             @Nullable ThingUID thingUID, @Nullable ThingUID bridgeUID) {
 176         if (thingTypeUID.equals(RemoteopenhabBindingConstants.BRIDGE_TYPE_SERVER)) {
 177             return super.createThing(thingTypeUID, configuration, thingUID, null);
 178         } else if (RemoteopenhabBindingConstants.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
 179             ThingUID newThingUID;
 180             if (bridgeUID != null && thingUID != null) {
 181                 newThingUID = new ThingUID(thingTypeUID, bridgeUID, thingUID.getId());
 182             } else {
 183                 newThingUID = thingUID;
 184             }
 185             return super.createThing(thingTypeUID, configuration, newThingUID, bridgeUID);
 186         }
 187         throw new IllegalArgumentException(
 188                 "The thing type " + thingTypeUID + " is not supported by the remote openHAB binding.");
 189     }
 190
 191     /**
 192      * Creates a handler for the specific thing.
 193      */
 194     @Override
 195     protected @Nullable ThingHandler createHandler(Thing thing) {
 196         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
 197         if (thingTypeUID.equals(RemoteopenhabBindingConstants.BRIDGE_TYPE_SERVER)) {
 198             return new RemoteopenhabBridgeHandler((Bridge) thing, httpClient, httpClientTrustingCert, clientBuilder,
 199                     eventSourceFactory, channelTypeProvider, stateDescriptionProvider, jsonParser);
 200         } else if (RemoteopenhabBindingConstants.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
 201             return new RemoteopenhabThingHandler(thing);
 202         }
 203         return null;
 204     }
 205 }