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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.ekey.internal.handler;
  14
  15 import static org.openhab.binding.ekey.internal.EkeyBindingConstants.*;
  16
  17 import java.io.IOException;
  18 import java.util.Arrays;
  19 import java.util.Collection;
  20 import java.util.List;
  21 import java.util.Optional;
  22 import java.util.stream.Collectors;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.openhab.binding.ekey.internal.EkeyConfiguration;
  27 import org.openhab.binding.ekey.internal.EkeyDynamicStateDescriptionProvider;
  28 import org.openhab.binding.ekey.internal.api.EkeyPacketListener;
  29 import org.openhab.binding.ekey.internal.api.EkeyUdpPacketReceiver;
  30 import org.openhab.core.library.types.DecimalType;
  31 import org.openhab.core.library.types.StringType;
  32 import org.openhab.core.thing.Channel;
  33 import org.openhab.core.thing.ChannelUID;
  34 import org.openhab.core.thing.Thing;
  35 import org.openhab.core.thing.ThingStatus;
  36 import org.openhab.core.thing.ThingStatusDetail;
  37 import org.openhab.core.thing.binding.BaseThingHandler;
  38 import org.openhab.core.thing.binding.builder.ChannelBuilder;
  39 import org.openhab.core.thing.binding.builder.ThingBuilder;
  40 import org.openhab.core.thing.type.ChannelKind;
  41 import org.openhab.core.thing.type.ChannelTypeUID;
  42 import org.openhab.core.types.Command;
  43 import org.openhab.core.types.State;
  44 import org.openhab.core.types.StateOption;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 /**
  49  * The {@link EkeyHandler} is responsible for handling commands, which are
  50  * sent to one of the channels.
  51  *
  52  * @author Hans-Jörg Merk - Initial contribution
  53  * @author Robert Delbrück - Add natIp
  54  */
  55 @NonNullByDefault
  56 public class EkeyHandler extends BaseThingHandler implements EkeyPacketListener {
  57
  58     private final Logger logger = LoggerFactory.getLogger(EkeyHandler.class);
  59
  60     private final EkeyDynamicStateDescriptionProvider ekeyStateDescriptionProvider;
  61
  62     private EkeyConfiguration config = new EkeyConfiguration();
  63     private @Nullable EkeyUdpPacketReceiver receiver;
  64
  65     public EkeyHandler(Thing thing, EkeyDynamicStateDescriptionProvider ekeyStateDescriptionProvider) {
  66         super(thing);
  67         this.ekeyStateDescriptionProvider = ekeyStateDescriptionProvider;
  68     }
  69
  70     @Override
  71     public void handleCommand(ChannelUID channelUID, Command command) {
  72         // The binding does not handle any command
  73     }
  74
  75     @Override
  76     public void initialize() {
  77         logger.debug("ekey handler initializing");
  78         config = getConfigAs(EkeyConfiguration.class);
  79
  80         if (!config.ipAddress.isEmpty() && config.port != 0) {
  81             updateStatus(ThingStatus.UNKNOWN);
  82
  83             scheduler.submit(() -> {
  84                 populateChannels(config.protocol);
  85                 String readerThreadName = "OH-binding-" + getThing().getUID().getAsString();
  86
  87                 EkeyUdpPacketReceiver localReceiver = receiver = new EkeyUdpPacketReceiver(
  88                         Optional.ofNullable(config.natIp).orElse(config.ipAddress), config.port, readerThreadName);
  89                 localReceiver.addEkeyPacketListener(this);
  90                 try {
  91                     localReceiver.openConnection();
  92                 } catch (IOException e) {
  93                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Cannot open connection)");
  94                 }
  95                 updateStatus(ThingStatus.ONLINE);
  96             });
  97         } else {
  98             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, "No IP address specified)");
  99         }
 100     }
 101
 102     @Override
 103     public void dispose() {
 104         EkeyUdpPacketReceiver localReceiver = this.receiver;
 105
 106         if (localReceiver != null) {
 107             localReceiver.closeConnection();
 108             localReceiver.removeEkeyPacketListener(this);
 109         }
 110         super.dispose();
 111     }
 112
 113     @Override
 114     public void messageReceived(byte[] message) {
 115         logger.debug("messageReceived() : {}", message);
 116         config = getConfigAs(EkeyConfiguration.class);
 117         String delimiter = config.delimiter;
 118
 119         switch (config.protocol) {
 120             case "RARE":
 121                 parseRare(message, delimiter);
 122                 break;
 123             case "MULTI":
 124                 parseMulti(message, delimiter);
 125                 break;
 126             case "HOME":
 127                 parseHome(message, delimiter);
 128                 break;
 129         }
 130     }
 131
 132     @Override
 133     public void connectionStatusChanged(ThingStatus status, byte @Nullable [] message) {
 134         if (message != null) {
 135             this.updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, null);
 136         }
 137         this.updateStatus(status);
 138     }
 139
 140     public void parseRare(byte[] message, String delimiter) {
 141         logger.debug("parse RARE packet");
 142         if (message.length >= 72) {
 143             byte[] newMessage = Arrays.copyOf(message, 72);
 144             String messageString = new String(newMessage);
 145             long action = getIntValueFrom(newMessage, 4, 4);
 146             long terminalid = getIntValueFrom(newMessage, 8, 4);
 147             String terminalSerial = getStringValueFrom(newMessage, 12, 14);
 148             long relayid = getIntValueFrom(newMessage, 26, 1);
 149             long userid = getIntValueFrom(newMessage, 28, 4);
 150             long fingerid = getIntValueFrom(newMessage, 32, 4);
 151             int serial = reconstructFsSerial(terminalid);
 152             if (logger.isTraceEnabled()) {
 153                 logger.trace("messageString received() : {}", messageString);
 154                 logger.trace("AKTION           : {}", action);
 155                 logger.trace("TERMINAL SERIAL  : {}", terminalSerial);
 156                 logger.trace("RESERVED         : {}", getStringValueFrom(newMessage, 27, 1));
 157                 logger.trace("RELAY ID         : {}", relayid);
 158                 logger.trace("USER ID          : {}", userid);
 159                 logger.trace("FINGER ID        : {}", fingerid);
 160                 logger.trace("EVENT            : {}", getStringValueFrom(newMessage, 36, 16));
 161                 logger.trace("FS SERIAL        : {}", serial);
 162             }
 163             updateState(CHANNEL_TYPE_ACTION, new DecimalType(action));
 164             if (!terminalSerial.isEmpty()) {
 165                 updateState(CHANNEL_TYPE_TERMID, DecimalType.valueOf(terminalSerial));
 166             } else {
 167                 updateState(CHANNEL_TYPE_TERMID, DecimalType.valueOf("-1"));
 168             }
 169             updateState(CHANNEL_TYPE_RESERVED, StringType.valueOf(getStringValueFrom(newMessage, 27, 1)));
 170             updateState(CHANNEL_TYPE_RELAYID, new DecimalType(relayid));
 171             updateState(CHANNEL_TYPE_USERID, new DecimalType(userid));
 172             updateState(CHANNEL_TYPE_FINGERID, new DecimalType(fingerid));
 173             updateState(CHANNEL_TYPE_EVENT, StringType.valueOf(getStringValueFrom(newMessage, 36, 16)));
 174             updateState(CHANNEL_TYPE_FSSERIAL, new DecimalType(serial));
 175
 176         }
 177     }
 178
 179     public void parseMulti(byte[] message, String delimiter) {
 180         logger.debug("parse MULTI packet");
 181         if (message.length >= 46) {
 182             byte[] newMessage = Arrays.copyOf(message, 46);
 183             String messageString = new String(newMessage);
 184             String[] array = messageString.split(delimiter);
 185             if (logger.isTraceEnabled()) {
 186                 logger.trace("messageString received() : {}", messageString);
 187                 logger.trace("USER ID     : {}", array[1]);
 188                 logger.trace("USER ID     : {}", array[1]);
 189                 logger.trace("USER NAME   : {}", array[2]);
 190                 logger.trace("USER STATUS : {}", array[3]);
 191                 logger.trace("FINGER ID   : {}", array[4]);
 192                 logger.trace("KEY ID      : {}", array[5]);
 193                 logger.trace("SERIENNR FS : {}", array[6]);
 194                 logger.trace("NAME FS     : {}", new String(array[7]).replace("-", ""));
 195                 logger.trace("AKTION      : {}", array[8]);
 196                 logger.trace("INPUT ID    : {}", array[9]);
 197
 198             }
 199             if (!"-".equals(array[1])) {
 200                 updateState(CHANNEL_TYPE_USERID, DecimalType.valueOf((array[1])));
 201             } else {
 202                 updateState(CHANNEL_TYPE_USERID, DecimalType.valueOf("-1"));
 203             }
 204             String userName = (array[2]).toString();
 205             if (!userName.isEmpty()) {
 206                 userName = userName.replace("-", "");
 207                 userName = userName.replace(" ", "");
 208                 updateState(CHANNEL_TYPE_USERNAME, StringType.valueOf(userName));
 209             }
 210             if (!"-".equals(array[3])) {
 211                 updateState(CHANNEL_TYPE_USERSTATUS, DecimalType.valueOf((array[3])));
 212             } else {
 213                 updateState(CHANNEL_TYPE_USERSTATUS, DecimalType.valueOf("-1"));
 214             }
 215             if (!"-".equals(array[4])) {
 216                 updateState(CHANNEL_TYPE_FINGERID, DecimalType.valueOf((array[4])));
 217             } else {
 218                 updateState(CHANNEL_TYPE_FINGERID, DecimalType.valueOf("-1"));
 219             }
 220             if (!"-".equals(array[5])) {
 221                 updateState(CHANNEL_TYPE_KEYID, DecimalType.valueOf((array[5])));
 222             } else {
 223                 updateState(CHANNEL_TYPE_KEYID, DecimalType.valueOf("-1"));
 224             }
 225             updateState(CHANNEL_TYPE_FSSERIAL, DecimalType.valueOf((array[6])));
 226             updateState(CHANNEL_TYPE_FSNAME, new StringType(new String(array[7]).replace("-", "")));
 227             updateState(CHANNEL_TYPE_ACTION, DecimalType.valueOf((array[8])));
 228             if (!"-".equals(array[9])) {
 229                 updateState(CHANNEL_TYPE_INPUTID, DecimalType.valueOf((array[9])));
 230             } else {
 231                 updateState(CHANNEL_TYPE_INPUTID, DecimalType.valueOf("-1"));
 232             }
 233         } else {
 234             logger.trace("received packet is to short : {}", message);
 235         }
 236     }
 237
 238     public void parseHome(byte[] message, String delimiter) {
 239         logger.debug("parse HOME packet");
 240         if (message.length >= 27) {
 241             byte[] newMessage = Arrays.copyOf(message, 27);
 242             String messageString = new String(newMessage);
 243             String[] array = messageString.split(delimiter);
 244             if (logger.isTraceEnabled()) {
 245                 logger.trace("messageString received() : {}", messageString);
 246                 logger.trace("USER ID     : {}", array[1]);
 247                 logger.trace("FINGER ID   : {}", array[2]);
 248                 logger.trace("SERIENNR FS : {}", array[3]);
 249                 logger.trace("AKTION      : {}", array[4]);
 250                 logger.trace("RELAY ID    : {}", array[5]);
 251             }
 252             if (!"-".equals(array[1])) {
 253                 updateState(CHANNEL_TYPE_USERID, DecimalType.valueOf((array[1])));
 254             } else {
 255                 updateState(CHANNEL_TYPE_USERID, DecimalType.valueOf("-1"));
 256             }
 257             if (!"-".equals(array[2])) {
 258                 updateState(CHANNEL_TYPE_FINGERID, DecimalType.valueOf((array[2])));
 259             } else {
 260                 updateState(CHANNEL_TYPE_FINGERID, DecimalType.valueOf("-1"));
 261             }
 262             updateState(CHANNEL_TYPE_FSSERIAL, DecimalType.valueOf((array[3])));
 263             updateState(CHANNEL_TYPE_ACTION, DecimalType.valueOf((array[4])));
 264             if (!"-".equals(array[5])) {
 265                 State relayId = DecimalType.valueOf((array[5]));
 266                 updateState(CHANNEL_TYPE_RELAYID, relayId);
 267             } else {
 268                 updateState(CHANNEL_TYPE_RELAYID, DecimalType.valueOf("-1"));
 269             }
 270         } else {
 271             logger.trace("received packet is to short : {}", message);
 272         }
 273     }
 274
 275     public void addChannel(String channelId, String itemType, @Nullable final Collection<String> options) {
 276         if (thing.getChannel(channelId) == null) {
 277             logger.debug("Channel '{}' for UID to be added", channelId);
 278             ThingBuilder thingBuilder = editThing();
 279             final ChannelTypeUID channelTypeUID = new ChannelTypeUID(BINDING_ID, channelId);
 280             Channel channel = ChannelBuilder.create(new ChannelUID(getThing().getUID(), channelId), itemType)
 281                     .withType(channelTypeUID).withKind(ChannelKind.STATE).build();
 282             thingBuilder.withChannel(channel);
 283             updateThing(thingBuilder.build());
 284         }
 285         if (options != null) {
 286             final List<StateOption> stateOptions = options.stream()
 287                     .map(e -> new StateOption(e, e.substring(0, 1) + e.substring(1).toLowerCase()))
 288                     .collect(Collectors.toList());
 289             logger.debug("StateOptions : '{}'", stateOptions);
 290             ekeyStateDescriptionProvider.setStateOptions(new ChannelUID(getThing().getUID(), channelId), stateOptions);
 291         }
 292     }
 293
 294     public void populateChannels(String protocol) {
 295         String channelId = "";
 296         String itemType = "Number";
 297
 298         switch (protocol) {
 299             case "HOME":
 300                 channelId = CHANNEL_TYPE_RELAYID;
 301                 addChannel(channelId, itemType, null);
 302                 break;
 303             case "MULTI":
 304                 channelId = CHANNEL_TYPE_USERNAME;
 305                 addChannel(channelId, "String", null);
 306                 channelId = CHANNEL_TYPE_USERSTATUS;
 307                 addChannel(channelId, itemType, null);
 308                 channelId = CHANNEL_TYPE_KEYID;
 309                 addChannel(channelId, itemType, null);
 310                 channelId = CHANNEL_TYPE_FSNAME;
 311                 addChannel(channelId, "String", null);
 312                 channelId = CHANNEL_TYPE_INPUTID;
 313                 addChannel(channelId, itemType, null);
 314                 break;
 315             case "RARE":
 316                 channelId = CHANNEL_TYPE_TERMID;
 317                 addChannel(channelId, itemType, null);
 318                 channelId = CHANNEL_TYPE_RELAYID;
 319                 addChannel(channelId, itemType, null);
 320                 channelId = CHANNEL_TYPE_RESERVED;
 321                 addChannel(channelId, "String", null);
 322                 channelId = CHANNEL_TYPE_EVENT;
 323                 addChannel(channelId, "String", null);
 324                 break;
 325         }
 326     }
 327
 328     private long getIntValueFrom(byte[] bytes, int start, int length) {
 329         if (start + length > bytes.length) {
 330             return -1;
 331         }
 332         long value = 0;
 333         int bits = 0;
 334         for (int i = start; i < start + length; i++) {
 335             value |= (bytes[i] & 0xFF) << bits;
 336             bits += 8;
 337         }
 338         return value;
 339     }
 340
 341     private String getStringValueFrom(byte[] bytes, int start, int length) {
 342         if (start + length > bytes.length) {
 343             logger.debug("Could not get String from bytes");
 344             return "";
 345         }
 346         StringBuffer value = new StringBuffer();
 347         for (int i = start + length - 1; i >= start; i--) {
 348             if (bytes[i] > (byte) ' ' && bytes[i] < (byte) '~') {
 349                 value.append((char) bytes[i]);
 350             }
 351         }
 352         return value.toString();
 353     }
 354
 355     private int reconstructFsSerial(long termID) {
 356         long s = termID;
 357         s ^= 0x70000000;
 358         int ssss = (int) (s & 0xFFFF);
 359         s >>= 16;
 360         int yy = (int) s % 53;
 361         int ww = (int) s / 53;
 362         yy *= 1000000;
 363         ww *= 10000;
 364         return ww + yy + ssss;
 365     }
 366 }