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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.mynice.internal.discovery;
  14
  15 import static org.openhab.binding.mynice.internal.MyNiceBindingConstants.BRIDGE_TYPE_IT4WIFI;
  16 import static org.openhab.binding.mynice.internal.config.It4WifiConfiguration.HOSTNAME;
  17 import static org.openhab.core.thing.Thing.PROPERTY_MAC_ADDRESS;
  18
  19 import java.util.Map;
  20 import java.util.Set;
  21 import java.util.regex.Pattern;
  22
  23 import javax.jmdns.ServiceInfo;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.openhab.core.config.discovery.DiscoveryResult;
  28 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  29 import org.openhab.core.config.discovery.mdns.MDNSDiscoveryParticipant;
  30 import org.openhab.core.thing.ThingTypeUID;
  31 import org.openhab.core.thing.ThingUID;
  32 import org.osgi.service.component.annotations.Component;
  33
  34 /**
  35  * The {@link MyNiceDiscoveryParticipant} is responsible for discovering the IT4Wifi bridge using mDNS discovery service
  36  *
  37  * @author Gaël L'hopital - Initial contribution
  38  */
  39 @Component
  40 @NonNullByDefault
  41 public class MyNiceDiscoveryParticipant implements MDNSDiscoveryParticipant {
  42     private static final String PROPERTY_MODEL = "model";
  43     private static final String PROPERTY_DEVICE_ID = "deviceid";
  44     private static final String MAC_REGEX = "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})|([0-9a-fA-F]{4}\\.[0-9a-fA-F]{4}\\.[0-9a-fA-F]{4})$";
  45     private static final Pattern MAC_PATTERN = Pattern.compile(MAC_REGEX);
  46
  47     @Override
  48     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  49         return Set.of(BRIDGE_TYPE_IT4WIFI);
  50     }
  51
  52     @Override
  53     public String getServiceType() {
  54         return "_nap._tcp.local.";
  55     }
  56
  57     @Override
  58     public @Nullable DiscoveryResult createResult(ServiceInfo service) {
  59         ThingUID thingUID = getThingUID(service);
  60         String[] hostNames = service.getHostAddresses();
  61         if (thingUID != null && hostNames.length > 0) {
  62             String label = service.getPropertyString(PROPERTY_MODEL);
  63             String macAddress = service.getPropertyString(PROPERTY_DEVICE_ID);
  64
  65             return DiscoveryResultBuilder.create(thingUID).withLabel(label)
  66                     .withRepresentationProperty(PROPERTY_MAC_ADDRESS).withThingType(BRIDGE_TYPE_IT4WIFI)
  67                     .withProperties(Map.of(HOSTNAME, hostNames[0], PROPERTY_MAC_ADDRESS, macAddress)).build();
  68         }
  69         return null;
  70     }
  71
  72     @Override
  73     public @Nullable ThingUID getThingUID(ServiceInfo service) {
  74         String macAddress = service.getPropertyString(PROPERTY_DEVICE_ID);
  75         if (macAddress != null && validate(macAddress)) {
  76             macAddress = macAddress.replaceAll("[^a-fA-F0-9]", "").toLowerCase();
  77             return new ThingUID(BRIDGE_TYPE_IT4WIFI, macAddress);
  78         }
  79         return null;
  80     }
  81
  82     private boolean validate(String mac) {
  83         return MAC_PATTERN.matcher(mac).find();
  84     }
  85 }