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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.hdanywhere.internal.handler;
  14
  15 import static org.apache.commons.lang.StringUtils.isNotBlank;
  16
  17 import java.io.ByteArrayInputStream;
  18 import java.io.IOException;
  19 import java.io.InputStream;
  20 import java.math.BigDecimal;
  21 import java.nio.charset.StandardCharsets;
  22 import java.util.Map;
  23 import java.util.Properties;
  24 import java.util.concurrent.ScheduledFuture;
  25 import java.util.concurrent.TimeUnit;
  26
  27 import org.openhab.binding.hdanywhere.internal.HDanywhereBindingConstants.Port;
  28 import org.openhab.core.io.net.http.HttpUtil;
  29 import org.openhab.core.library.types.DecimalType;
  30 import org.openhab.core.thing.ChannelUID;
  31 import org.openhab.core.thing.Thing;
  32 import org.openhab.core.thing.ThingStatus;
  33 import org.openhab.core.thing.binding.BaseThingHandler;
  34 import org.openhab.core.types.Command;
  35 import org.openhab.core.types.RefreshType;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 import com.google.gson.Gson;
  40 import com.google.gson.reflect.TypeToken;
  41
  42 /**
  43  * The {@link Mhub4K431Handler} is responsible for handling commands, which are
  44  * sent to one of the channels. It supports the MHUB 4K (4×3+1) matrix
  45  *
  46  * @author Karel Goderis - Initial contribution
  47  */
  48 public class Mhub4K431Handler extends BaseThingHandler {
  49
  50     // List of Configurations constants
  51     public static final String IP_ADDRESS = "ipAddress";
  52     // public static final String PORTS = "ports";
  53     public static final String POLLING_INTERVAL = "interval";
  54
  55     private final Logger logger = LoggerFactory.getLogger(Mhub4K431Handler.class);
  56
  57     private ScheduledFuture<?> pollingJob;
  58     protected final Gson gson = new Gson();
  59
  60     private final int timeout = 5000;
  61     private final int numberOfPorts = 4;
  62
  63     public Mhub4K431Handler(Thing thing) {
  64         super(thing);
  65     }
  66
  67     @Override
  68     public void initialize() {
  69         logger.debug("Initializing HDanywhere MHUB 4K (4×3+1) matrix handler.");
  70
  71         if (pollingJob == null || pollingJob.isCancelled()) {
  72             int pollingInterval = ((BigDecimal) getConfig().get(POLLING_INTERVAL)).intValue();
  73             pollingJob = scheduler.scheduleWithFixedDelay(pollingRunnable, 1, pollingInterval, TimeUnit.SECONDS);
  74         }
  75         updateStatus(ThingStatus.UNKNOWN);
  76     }
  77
  78     @Override
  79     public void dispose() {
  80         logger.debug("Disposing HDanywhere matrix handler.");
  81         if (pollingJob != null && !pollingJob.isCancelled()) {
  82             pollingJob.cancel(true);
  83             pollingJob = null;
  84         }
  85     }
  86
  87     private Runnable pollingRunnable = () -> {
  88         try {
  89             String host = (String) getConfig().get(IP_ADDRESS);
  90
  91             String httpMethod = "POST";
  92             String url = "http://" + host + "/cgi-bin/MUH44TP_getsetparams.cgi";
  93             String content = "{tag:ptn}";
  94             InputStream stream = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
  95
  96             if (isNotBlank(httpMethod) && isNotBlank(url)) {
  97                 String response = HttpUtil.executeUrl(httpMethod, url, null, stream, null, timeout);
  98                 response = response.trim();
  99                 response = response.substring(1, response.length() - 1);
 100
 101                 if (response != null) {
 102                     updateStatus(ThingStatus.ONLINE);
 103
 104                     java.lang.reflect.Type type = new TypeToken<Map<String, String>>() {
 105                     }.getType();
 106                     Map<String, String> map = gson.fromJson(response, type);
 107
 108                     String inputChannel = map.get("Inputchannel");
 109
 110                     for (int i = 0; i < numberOfPorts; i++) {
 111                         DecimalType decimalType = new DecimalType(String.valueOf(inputChannel.charAt(i)));
 112                         updateState(new ChannelUID(getThing().getUID(), Port.get(i + 1).channelID()), decimalType);
 113                     }
 114                 } else {
 115                     updateStatus(ThingStatus.OFFLINE);
 116                 }
 117             }
 118         } catch (Exception e) {
 119             logger.debug("An exception occurred while polling the HDanwywhere matrix: '{}'", e.getMessage());
 120             updateStatus(ThingStatus.OFFLINE);
 121         }
 122     };
 123
 124     @Override
 125     public void handleCommand(ChannelUID channelUID, Command command) {
 126         if (command instanceof RefreshType) {
 127             // Simply schedule a single run of the polling runnable to refresh all channels
 128             scheduler.schedule(pollingRunnable, 0, TimeUnit.SECONDS);
 129         } else {
 130             String channelID = channelUID.getId();
 131
 132             String host = (String) getConfig().get(IP_ADDRESS);
 133             int sourcePort = Integer.valueOf(command.toString());
 134             int outputPort = Port.get(channelID).toNumber();
 135
 136             if (sourcePort > numberOfPorts) {
 137                 // nice try - we can switch to a port that does not physically exist
 138                 logger.warn("Source port {} goes beyond the physical number of {} ports available on the matrix {}",
 139                         new Object[] { sourcePort, numberOfPorts, host });
 140             } else if (outputPort > numberOfPorts) {
 141                 // nice try - we can switch to a port that does not physically exist
 142                 logger.warn("Output port {} goes beyond the physical number of {} ports available on the matrix {}",
 143                         new Object[] { outputPort, numberOfPorts, host });
 144             } else {
 145                 String httpMethod = "POST";
 146                 String url = "http://" + host + "/cgi-bin/MMX32_Keyvalue.cgi";
 147
 148                 String content = "{CMD=";
 149                 content = content + command.toString() + "B";
 150                 content = content + String.valueOf(outputPort) + ".";
 151
 152                 InputStream stream = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
 153
 154                 Properties httpHeaders = new Properties();
 155                 httpHeaders.setProperty("Cookie", "logintype-88=01");
 156
 157                 try {
 158                     String response = HttpUtil.executeUrl(httpMethod, url, httpHeaders, stream,
 159                             "application/x-www-form-urlencoded; charset=UTF-8", timeout);
 160                 } catch (IOException e) {
 161                     logger.debug("Communication with device failed", e);
 162                     updateStatus(ThingStatus.OFFLINE);
 163                 }
 164             }
 165         }
 166     }
 167 }