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   1 /**
   2  * Copyright (c) 2010-2022 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.androiddebugbridge.internal.discovery;
  14
  15 import static org.openhab.binding.androiddebugbridge.internal.AndroidDebugBridgeBindingConstants.*;
  16
  17 import java.util.Dictionary;
  18 import java.util.Map;
  19 import java.util.Set;
  20
  21 import javax.jmdns.ServiceInfo;
  22
  23 import org.eclipse.jdt.annotation.NonNullByDefault;
  24 import org.eclipse.jdt.annotation.Nullable;
  25 import org.openhab.core.config.discovery.DiscoveryResult;
  26 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  27 import org.openhab.core.config.discovery.DiscoveryService;
  28 import org.openhab.core.config.discovery.mdns.MDNSDiscoveryParticipant;
  29 import org.openhab.core.config.discovery.mdns.internal.MDNSDiscoveryService;
  30 import org.openhab.core.thing.Thing;
  31 import org.openhab.core.thing.ThingTypeUID;
  32 import org.openhab.core.thing.ThingUID;
  33 import org.osgi.service.component.ComponentContext;
  34 import org.osgi.service.component.annotations.Activate;
  35 import org.osgi.service.component.annotations.Component;
  36 import org.osgi.service.component.annotations.Modified;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 /**
  41  * The {@link AndroidTVMDNSDiscoveryParticipant} is responsible for discovering new and removed Android TV devices. It
  42  * uses
  43  * the central {@link MDNSDiscoveryService}.
  44  *
  45  * @author Miguel Álvarez - Initial contribution
  46  */
  47 @Component(service = MDNSDiscoveryParticipant.class, configurationPid = "discovery.androiddebugbridge")
  48 @NonNullByDefault
  49 public class AndroidTVMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  50
  51     private static final String SERVICE_TYPE = "_androidtvremote2._tcp.local.";
  52     private static final String MDNS_PROPERTY_MAC_ADDRESS = "bt";
  53     private final Logger logger = LoggerFactory.getLogger(AndroidTVMDNSDiscoveryParticipant.class);
  54
  55     private boolean isAutoDiscoveryEnabled = true;
  56
  57     @Activate
  58     protected void activate(ComponentContext componentContext) {
  59         activateOrModifyService(componentContext);
  60     }
  61
  62     @Modified
  63     protected void modified(ComponentContext componentContext) {
  64         activateOrModifyService(componentContext);
  65     }
  66
  67     private void activateOrModifyService(ComponentContext componentContext) {
  68         Dictionary<String, @Nullable Object> properties = componentContext.getProperties();
  69         String autoDiscoveryPropertyValue = (String) properties
  70                 .get(DiscoveryService.CONFIG_PROPERTY_BACKGROUND_DISCOVERY);
  71         if (autoDiscoveryPropertyValue != null && !autoDiscoveryPropertyValue.isBlank()) {
  72             isAutoDiscoveryEnabled = Boolean.valueOf(autoDiscoveryPropertyValue);
  73         }
  74     }
  75
  76     @Override
  77     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  78         return SUPPORTED_THING_TYPES;
  79     }
  80
  81     @Override
  82     public String getServiceType() {
  83         return SERVICE_TYPE;
  84     }
  85
  86     @Override
  87     public @Nullable DiscoveryResult createResult(ServiceInfo service) {
  88         if (isAutoDiscoveryEnabled) {
  89             ThingUID uid = getThingUID(service);
  90             if (uid != null) {
  91                 String ip = service.getHostAddresses()[0];
  92                 String macAddress = service.getPropertyString(MDNS_PROPERTY_MAC_ADDRESS);
  93                 String friendlyName = String.format("%s (%s)", service.getName(), ip);
  94                 return DiscoveryResultBuilder.create(uid) //
  95                         .withProperties(Map.of( //
  96                                 PARAMETER_IP, ip, //
  97                                 Thing.PROPERTY_MAC_ADDRESS, macAddress.toLowerCase())) //
  98                         .withLabel(friendlyName) //
  99                         .withRepresentationProperty(Thing.PROPERTY_MAC_ADDRESS) //
 100                         .build();
 101             }
 102         }
 103         return null;
 104     }
 105
 106     @Override
 107     public @Nullable ThingUID getThingUID(ServiceInfo service) {
 108         String macAddress = service.getPropertyString(MDNS_PROPERTY_MAC_ADDRESS);
 109         if (macAddress != null && !macAddress.isBlank()) {
 110             return new ThingUID(THING_TYPE_ANDROID_DEVICE, macAddress.replaceAll(":", "").toLowerCase());
 111         }
 112         return null;
 113     }
 114 }