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   1 /**
   2  * Copyright (c) 2010-2023 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
  38 /**
  39  * The {@link AndroidTVMDNSDiscoveryParticipant} is responsible for discovering new and removed Android TV devices. It
  40  * uses
  41  * the central {@link MDNSDiscoveryService}.
  42  *
  43  * @author Miguel Álvarez - Initial contribution
  44  */
  45 @Component(service = MDNSDiscoveryParticipant.class, configurationPid = "discovery.androiddebugbridge")
  46 @NonNullByDefault
  47 public class AndroidTVMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  48
  49     private static final String SERVICE_TYPE = "_androidtvremote2._tcp.local.";
  50     private static final String MDNS_PROPERTY_MAC_ADDRESS = "bt";
  51
  52     private boolean isAutoDiscoveryEnabled = true;
  53
  54     @Activate
  55     protected void activate(ComponentContext componentContext) {
  56         activateOrModifyService(componentContext);
  57     }
  58
  59     @Modified
  60     protected void modified(ComponentContext componentContext) {
  61         activateOrModifyService(componentContext);
  62     }
  63
  64     private void activateOrModifyService(ComponentContext componentContext) {
  65         Dictionary<String, @Nullable Object> properties = componentContext.getProperties();
  66         String autoDiscoveryPropertyValue = (String) properties
  67                 .get(DiscoveryService.CONFIG_PROPERTY_BACKGROUND_DISCOVERY);
  68         if (autoDiscoveryPropertyValue != null && !autoDiscoveryPropertyValue.isBlank()) {
  69             isAutoDiscoveryEnabled = Boolean.valueOf(autoDiscoveryPropertyValue);
  70         }
  71     }
  72
  73     @Override
  74     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  75         return SUPPORTED_THING_TYPES;
  76     }
  77
  78     @Override
  79     public String getServiceType() {
  80         return SERVICE_TYPE;
  81     }
  82
  83     @Override
  84     public @Nullable DiscoveryResult createResult(ServiceInfo service) {
  85         if (isAutoDiscoveryEnabled) {
  86             ThingUID uid = getThingUID(service);
  87             if (uid != null) {
  88                 String ip = service.getHostAddresses()[0];
  89                 String macAddress = service.getPropertyString(MDNS_PROPERTY_MAC_ADDRESS);
  90                 String friendlyName = String.format("%s (%s)", service.getName(), ip);
  91                 return DiscoveryResultBuilder.create(uid) //
  92                         .withProperties(Map.of( //
  93                                 PARAMETER_IP, ip, //
  94                                 Thing.PROPERTY_MAC_ADDRESS, macAddress.toLowerCase())) //
  95                         .withLabel(friendlyName) //
  96                         .withRepresentationProperty(Thing.PROPERTY_MAC_ADDRESS) //
  97                         .build();
  98             }
  99         }
 100         return null;
 101     }
 102
 103     @Override
 104     public @Nullable ThingUID getThingUID(ServiceInfo service) {
 105         String macAddress = service.getPropertyString(MDNS_PROPERTY_MAC_ADDRESS);
 106         if (macAddress != null && !macAddress.isBlank()) {
 107             return new ThingUID(THING_TYPE_ANDROID_DEVICE, macAddress.replaceAll(":", "").toLowerCase());
 108         }
 109         return null;
 110     }
 111 }