git.basschouten.com Git - openhab-addons.git/blob

   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.ftpupload.internal.handler;
  14
  15 import static org.openhab.binding.ftpupload.internal.FtpUploadBindingConstants.*;
  16
  17 import java.util.regex.Pattern;
  18 import java.util.regex.PatternSyntaxException;
  19
  20 import org.openhab.binding.ftpupload.internal.config.FtpUploadConfig;
  21 import org.openhab.binding.ftpupload.internal.ftp.FtpServer;
  22 import org.openhab.binding.ftpupload.internal.ftp.FtpServerEventListener;
  23 import org.openhab.core.io.net.http.HttpUtil;
  24 import org.openhab.core.library.types.RawType;
  25 import org.openhab.core.thing.Channel;
  26 import org.openhab.core.thing.ChannelUID;
  27 import org.openhab.core.thing.Thing;
  28 import org.openhab.core.thing.ThingStatus;
  29 import org.openhab.core.thing.ThingStatusDetail;
  30 import org.openhab.core.thing.binding.BaseThingHandler;
  31 import org.openhab.core.types.Command;
  32 import org.openhab.core.types.RefreshType;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 /**
  37  * The {@link FtpUploadHandler} is responsible for handling commands, which are
  38  * sent to one of the channels.
  39  *
  40  * @author Pauli Anttila - Initial contribution
  41  */
  42 public class FtpUploadHandler extends BaseThingHandler implements FtpServerEventListener {
  43
  44     private Logger logger = LoggerFactory.getLogger(FtpUploadHandler.class);
  45
  46     private FtpUploadConfig configuration;
  47     private FtpServer ftpServer;
  48
  49     public FtpUploadHandler(Thing thing, FtpServer ftpServer) {
  50         super(thing);
  51         this.ftpServer = ftpServer;
  52     }
  53
  54     @Override
  55     public void handleCommand(ChannelUID channelUID, Command command) {
  56         logger.debug("handleCommand for channel {}: {}", channelUID.getId(), command.toString());
  57         logger.debug("Command sending not supported by this binding");
  58
  59         if (command.equals(RefreshType.REFRESH)) {
  60             ftpServer.printStats();
  61         }
  62     }
  63
  64     @Override
  65     public void initialize() {
  66         logger.debug("Initializing handler for FTP Upload Binding");
  67         configuration = getConfigAs(FtpUploadConfig.class);
  68         logger.debug("Using configuration: {}", configuration.toString());
  69
  70         ftpServer.addEventListener(this);
  71         try {
  72             ftpServer.addAuthenticationCredentials(configuration.userName, configuration.password);
  73         } catch (IllegalArgumentException e) {
  74             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, e.getMessage());
  75         }
  76
  77         updateStatus(ThingStatus.ONLINE);
  78     }
  79
  80     @Override
  81     public void dispose() {
  82         ftpServer.removeAuthenticationCredentials(configuration.userName);
  83         ftpServer.removeEventListener(this);
  84     }
  85
  86     @Override
  87     public void fileReceived(String userName, String filename, byte[] data) {
  88         if (configuration.userName.equals(userName)) {
  89             updateStatus(ThingStatus.ONLINE);
  90             updateChannels(filename, data);
  91             updateTriggers(filename);
  92         }
  93     }
  94
  95     private String guessMimeTypeFromData(byte[] data) {
  96         String mimeType = HttpUtil.guessContentTypeFromData(data);
  97         logger.debug("Mime type guess from content: {}", mimeType);
  98         if (mimeType == null) {
  99             mimeType = RawType.DEFAULT_MIME_TYPE;
 100         }
 101         logger.debug("Mime type: {}", mimeType);
 102         return mimeType;
 103     }
 104
 105     private void updateChannels(String filename, byte[] data) {
 106         for (Channel channel : thing.getChannels()) {
 107             String channelConf = (String) channel.getConfiguration().get(PARAM_FILENAME_PATTERN);
 108             if (channelConf != null) {
 109                 if (filenameMatch(filename, channelConf)) {
 110                     if ("Image".equals(channel.getAcceptedItemType())) {
 111                         updateState(channel.getUID().getId(), new RawType(data, guessMimeTypeFromData(data)));
 112                     }
 113                 }
 114             }
 115         }
 116     }
 117
 118     private void updateTriggers(String filename) {
 119         for (Channel channel : thing.getChannels()) {
 120             String channelConf = (String) channel.getConfiguration().get(PARAM_FILENAME_PATTERN);
 121             if (channelConf != null) {
 122                 if (filenameMatch(filename, channelConf)) {
 123                     if ("TRIGGER".equals(channel.getKind().toString())) {
 124                         triggerChannel(channel.getUID().getId(), EVENT_IMAGE_RECEIVED);
 125                     }
 126                 }
 127             }
 128         }
 129     }
 130
 131     private boolean filenameMatch(String filename, String pattern) {
 132         try {
 133             return Pattern.compile(pattern).matcher(filename).find();
 134         } catch (PatternSyntaxException e) {
 135             logger.warn("Invalid filename pattern '{}', reason: {}", pattern, e.getMessage());
 136         }
 137         return false;
 138     }
 139 }