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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.homematic.internal.communicator;
  14
  15 import java.io.IOException;
  16 import java.io.InputStream;
  17 import java.util.ArrayList;
  18 import java.util.Collection;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21 import java.util.Objects;
  22 import java.util.concurrent.TimeUnit;
  23
  24 import org.eclipse.jetty.client.HttpClient;
  25 import org.eclipse.jetty.client.api.ContentResponse;
  26 import org.eclipse.jetty.client.util.StringContentProvider;
  27 import org.eclipse.jetty.http.HttpHeader;
  28 import org.openhab.binding.homematic.internal.common.HomematicConfig;
  29 import org.openhab.binding.homematic.internal.communicator.client.UnknownParameterSetException;
  30 import org.openhab.binding.homematic.internal.communicator.client.UnknownRpcFailureException;
  31 import org.openhab.binding.homematic.internal.communicator.parser.CcuLoadDeviceNamesParser;
  32 import org.openhab.binding.homematic.internal.communicator.parser.CcuParamsetDescriptionParser;
  33 import org.openhab.binding.homematic.internal.communicator.parser.CcuValueParser;
  34 import org.openhab.binding.homematic.internal.communicator.parser.CcuVariablesAndScriptsParser;
  35 import org.openhab.binding.homematic.internal.model.HmChannel;
  36 import org.openhab.binding.homematic.internal.model.HmDatapoint;
  37 import org.openhab.binding.homematic.internal.model.HmDevice;
  38 import org.openhab.binding.homematic.internal.model.HmParamsetType;
  39 import org.openhab.binding.homematic.internal.model.HmResult;
  40 import org.openhab.binding.homematic.internal.model.TclScript;
  41 import org.openhab.binding.homematic.internal.model.TclScriptDataList;
  42 import org.openhab.binding.homematic.internal.model.TclScriptList;
  43 import org.osgi.framework.Bundle;
  44 import org.osgi.framework.FrameworkUtil;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 import com.thoughtworks.xstream.XStream;
  49 import com.thoughtworks.xstream.io.xml.StaxDriver;
  50
  51 /**
  52  * HomematicGateway implementation for a CCU.
  53  *
  54  * @author Gerhard Riegler - Initial contribution
  55  */
  56 public class CcuGateway extends AbstractHomematicGateway {
  57     private final Logger logger = LoggerFactory.getLogger(CcuGateway.class);
  58
  59     private Map<String, String> tclregaScripts;
  60     private XStream xStream = new XStream(new StaxDriver());
  61
  62     protected CcuGateway(String id, HomematicConfig config, HomematicGatewayAdapter gatewayAdapter,
  63             HttpClient httpClient) {
  64         super(id, config, gatewayAdapter, httpClient);
  65
  66         XStream.setupDefaultSecurity(xStream);
  67         xStream.allowTypesByWildcard(new String[] { HmDevice.class.getPackageName() + ".**" });
  68         xStream.setClassLoader(CcuGateway.class.getClassLoader());
  69         xStream.autodetectAnnotations(true);
  70         xStream.alias("scripts", TclScriptList.class);
  71         xStream.alias("list", TclScriptDataList.class);
  72         xStream.alias("result", HmResult.class);
  73     }
  74
  75     @Override
  76     protected void startClients() throws IOException {
  77         super.startClients();
  78
  79         tclregaScripts = loadTclRegaScripts();
  80     }
  81
  82     @Override
  83     protected void stopClients() {
  84         super.stopClients();
  85         tclregaScripts = null;
  86     }
  87
  88     @Override
  89     protected void loadVariables(HmChannel channel) throws IOException {
  90         TclScriptDataList resultList = sendScriptByName("getAllVariables", TclScriptDataList.class);
  91         new CcuVariablesAndScriptsParser(channel).parse(resultList);
  92     }
  93
  94     @Override
  95     protected void loadScripts(HmChannel channel) throws IOException {
  96         TclScriptDataList resultList = sendScriptByName("getAllPrograms", TclScriptDataList.class);
  97         new CcuVariablesAndScriptsParser(channel).parse(resultList);
  98     }
  99
 100     @Override
 101     protected void loadDeviceNames(Collection<HmDevice> devices) throws IOException {
 102         TclScriptDataList resultList = sendScriptByName("getAllDeviceNames", TclScriptDataList.class);
 103         new CcuLoadDeviceNamesParser(devices).parse(resultList);
 104     }
 105
 106     @Override
 107     protected void setChannelDatapointValues(HmChannel channel, HmParamsetType paramsetType) throws IOException {
 108         try {
 109             super.setChannelDatapointValues(channel, paramsetType);
 110         } catch (UnknownRpcFailureException ex) {
 111             logger.debug(
 112                     "RpcMessage unknown RPC failure (-1 Failure), fetching values with TclRega script for device {}, channel: {}, paramset: {}",
 113                     channel.getDevice().getAddress(), channel.getNumber(), paramsetType);
 114
 115             Collection<String> dpNames = new ArrayList<>();
 116             for (HmDatapoint dp : channel.getDatapoints()) {
 117                 if (!dp.isVirtual() && dp.isReadable() && dp.getParamsetType() == HmParamsetType.VALUES) {
 118                     dpNames.add(dp.getName());
 119                 }
 120             }
 121             if (!dpNames.isEmpty()) {
 122                 HmDevice device = channel.getDevice();
 123                 String channelName = String.format("%s.%s:%s.", device.getHmInterface().getName(), device.getAddress(),
 124                         channel.getNumber());
 125                 String datapointNames = String.join("\\t", dpNames);
 126                 TclScriptDataList resultList = sendScriptByName("getAllChannelValues", TclScriptDataList.class,
 127                         new String[] { "channel_name", "datapoint_names" },
 128                         new String[] { channelName, datapointNames });
 129                 new CcuValueParser(channel).parse(resultList);
 130                 channel.setInitialized(true);
 131             }
 132         }
 133     }
 134
 135     @Override
 136     protected void addChannelDatapoints(HmChannel channel, HmParamsetType paramsetType) throws IOException {
 137         try {
 138             getRpcClient(channel.getDevice().getHmInterface()).addChannelDatapoints(channel, paramsetType);
 139         } catch (UnknownParameterSetException ex) {
 140             logger.debug(
 141                     "RpcMessage RPC failure (-3 Unknown paramset), fetching metadata with TclRega script for device: {}, channel: {}, paramset: {}",
 142                     channel.getDevice().getAddress(), channel.getNumber(), paramsetType);
 143
 144             TclScriptDataList resultList = sendScriptByName("getParamsetDescription", TclScriptDataList.class,
 145                     new String[] { "device_address", "channel_number" },
 146                     new String[] { channel.getDevice().getAddress(), channel.getNumber().toString() });
 147             new CcuParamsetDescriptionParser(channel, paramsetType).parse(resultList);
 148         }
 149     }
 150
 151     @Override
 152     protected void setVariable(HmDatapoint dp, Object value) throws IOException {
 153         String strValue = Objects.toString(value, "").replace("\"", "\\\"");
 154         if (dp.isStringType()) {
 155             strValue = "\"" + strValue + "\"";
 156         }
 157         HmResult result = sendScriptByName("setVariable", HmResult.class,
 158                 new String[] { "variable_name", "variable_state" }, new String[] { dp.getInfo(), strValue });
 159         if (!result.isValid()) {
 160             throw new IOException("Unable to set CCU variable " + dp.getInfo());
 161         }
 162     }
 163
 164     @Override
 165     protected void executeScript(HmDatapoint dp) throws IOException {
 166         HmResult result = sendScriptByName("executeProgram", HmResult.class, new String[] { "program_name" },
 167                 new String[] { dp.getInfo() });
 168         if (!result.isValid()) {
 169             throw new IOException("Unable to start CCU program: " + dp.getInfo());
 170         }
 171     }
 172
 173     /**
 174      * Sends a TclRega script to the CCU.
 175      */
 176     private <T> T sendScriptByName(String scriptName, Class<T> clazz) throws IOException {
 177         return sendScriptByName(scriptName, clazz, new String[] {}, null);
 178     }
 179
 180     /**
 181      * Sends a TclRega script with the specified variables to the CCU.
 182      */
 183     private <T> T sendScriptByName(String scriptName, Class<T> clazz, String[] variableNames, String[] values)
 184             throws IOException {
 185         String script = tclregaScripts.get(scriptName);
 186         if (script != null) {
 187             for (int i = 0; i < variableNames.length; i++) {
 188                 script = script.replace("{" + variableNames[i] + "}", values[i]);
 189             }
 190         }
 191         return sendScript(script, clazz);
 192     }
 193
 194     /**
 195      * Main method for sending a TclRega script and parsing the XML result.
 196      */
 197     @SuppressWarnings("unchecked")
 198     private synchronized <T> T sendScript(String script, Class<T> clazz) throws IOException {
 199         try {
 200             script = script == null ? null : script.trim();
 201             if (script == null || script.isEmpty()) {
 202                 throw new RuntimeException("Homematic TclRegaScript is empty!");
 203             }
 204             if (logger.isTraceEnabled()) {
 205                 logger.trace("TclRegaScript: {}", script);
 206             }
 207
 208             StringContentProvider content = new StringContentProvider(script, config.getEncoding());
 209             ContentResponse response = httpClient.POST(config.getTclRegaUrl()).content(content)
 210                     .timeout(config.getTimeout(), TimeUnit.SECONDS)
 211                     .header(HttpHeader.CONTENT_TYPE, "text/plain;charset=" + config.getEncoding()).send();
 212
 213             String result = new String(response.getContent(), config.getEncoding());
 214             int lastPos = result.lastIndexOf("<xml><exec>");
 215             if (lastPos != -1) {
 216                 result = result.substring(0, lastPos);
 217             }
 218             if (logger.isTraceEnabled()) {
 219                 logger.trace("Result TclRegaScript: {}", result);
 220             }
 221
 222             return (T) xStream.fromXML(result);
 223         } catch (Exception ex) {
 224             throw new IOException(ex.getMessage(), ex);
 225         }
 226     }
 227
 228     /**
 229      * Load predefined scripts from an XML file.
 230      */
 231     private Map<String, String> loadTclRegaScripts() throws IOException {
 232         Bundle bundle = FrameworkUtil.getBundle(getClass());
 233         try (InputStream stream = bundle.getResource("homematic/tclrega-scripts.xml").openStream()) {
 234             TclScriptList scriptList = (TclScriptList) xStream.fromXML(stream);
 235             Map<String, String> result = new HashMap<>();
 236             if (scriptList.getScripts() != null) {
 237                 for (TclScript script : scriptList.getScripts()) {
 238                     String value = script.data.trim();
 239                     result.put(script.name, value.isEmpty() ? null : value);
 240                 }
 241             }
 242             return result;
 243         } catch (IllegalStateException | IOException e) {
 244             throw new IOException("The resource homematic/tclrega-scripts.xml could not be loaded!", e);
 245         }
 246     }
 247 }