2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
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
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.io.openhabcloud.internal;
16 import java.io.FileNotFoundException;
17 import java.io.IOException;
18 import java.nio.charset.StandardCharsets;
19 import java.nio.file.Files;
20 import java.security.SecureRandom;
21 import java.util.Arrays;
22 import java.util.HashSet;
23 import java.util.List;
27 import org.eclipse.jdt.annotation.Nullable;
28 import org.eclipse.jetty.client.HttpClient;
29 import org.openhab.core.OpenHAB;
30 import org.openhab.core.config.core.ConfigurableService;
31 import org.openhab.core.events.Event;
32 import org.openhab.core.events.EventFilter;
33 import org.openhab.core.events.EventPublisher;
34 import org.openhab.core.events.EventSubscriber;
35 import org.openhab.core.id.InstanceUUID;
36 import org.openhab.core.io.net.http.HttpClientFactory;
37 import org.openhab.core.items.Item;
38 import org.openhab.core.items.ItemNotFoundException;
39 import org.openhab.core.items.ItemRegistry;
40 import org.openhab.core.items.events.ItemEventFactory;
41 import org.openhab.core.items.events.ItemStateEvent;
42 import org.openhab.core.library.items.RollershutterItem;
43 import org.openhab.core.library.items.SwitchItem;
44 import org.openhab.core.library.types.OnOffType;
45 import org.openhab.core.library.types.UpDownType;
46 import org.openhab.core.model.script.engine.action.ActionService;
47 import org.openhab.core.net.HttpServiceUtil;
48 import org.openhab.core.types.Command;
49 import org.openhab.core.types.TypeParser;
50 import org.openhab.io.openhabcloud.NotificationAction;
51 import org.osgi.framework.BundleContext;
52 import org.osgi.framework.Constants;
53 import org.osgi.service.component.annotations.Activate;
54 import org.osgi.service.component.annotations.Component;
55 import org.osgi.service.component.annotations.Deactivate;
56 import org.osgi.service.component.annotations.Modified;
57 import org.osgi.service.component.annotations.Reference;
58 import org.slf4j.Logger;
59 import org.slf4j.LoggerFactory;
62 * This class starts the cloud connection service and implements interface to communicate with the cloud.
64 * @author Victor Belov - Initial contribution
65 * @author Kai Kreuzer - migrated code to new Jetty client and ESH APIs
67 @Component(service = { CloudService.class, EventSubscriber.class,
68 ActionService.class }, configurationPid = "org.openhab.openhabcloud", property = Constants.SERVICE_PID
69 + "=org.openhab.openhabcloud")
70 @ConfigurableService(category = "io", label = "openHAB Cloud", description_uri = CloudService.CONFIG_URI)
71 public class CloudService implements ActionService, CloudClientListener, EventSubscriber {
73 protected static final String CONFIG_URI = "io:openhabcloud";
75 private static final String CFG_EXPOSE = "expose";
76 private static final String CFG_BASE_URL = "baseURL";
77 private static final String CFG_MODE = "mode";
78 private static final String SECRET_FILE_NAME = "openhabcloud" + File.separator + "secret";
79 private static final String DEFAULT_URL = "https://myopenhab.org/";
80 private static final int DEFAULT_LOCAL_OPENHAB_MAX_CONCURRENT_REQUESTS = 200;
81 private static final int DEFAULT_LOCAL_OPENHAB_REQUEST_TIMEOUT = 30000;
82 private static final String HTTPCLIENT_NAME = "openhabcloud";
83 private static final String CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
84 private static final SecureRandom SR = new SecureRandom();
86 private final Logger logger = LoggerFactory.getLogger(CloudService.class);
88 public static String clientVersion = null;
89 private CloudClient cloudClient;
90 private String cloudBaseUrl = null;
91 private final HttpClient httpClient;
92 protected final ItemRegistry itemRegistry;
93 protected final EventPublisher eventPublisher;
95 private boolean remoteAccessEnabled = true;
96 private Set<String> exposedItems = null;
97 private int localPort;
100 public CloudService(final @Reference HttpClientFactory httpClientFactory,
101 final @Reference ItemRegistry itemRegistry, final @Reference EventPublisher eventPublisher) {
102 this.httpClient = httpClientFactory.createHttpClient(HTTPCLIENT_NAME);
103 this.httpClient.setStopTimeout(0);
104 this.httpClient.setMaxConnectionsPerDestination(DEFAULT_LOCAL_OPENHAB_MAX_CONCURRENT_REQUESTS);
105 this.httpClient.setConnectTimeout(DEFAULT_LOCAL_OPENHAB_REQUEST_TIMEOUT);
106 this.httpClient.setFollowRedirects(false);
108 this.itemRegistry = itemRegistry;
109 this.eventPublisher = eventPublisher;
113 * This method sends notification message to mobile app through the openHAB Cloud service
115 * @param userId the {@link String} containing the openHAB Cloud user id to send message to
116 * @param message the {@link String} containing a message to send to specified user id
117 * @param icon the {@link String} containing a name of the icon to be used with this notification
118 * @param severity the {@link String} containing severity (good, info, warning, error) of notification
120 public void sendNotification(String userId, String message, @Nullable String icon, @Nullable String severity) {
121 logger.debug("Sending message '{}' to user id {}", message, userId);
122 cloudClient.sendNotification(userId, message, icon, severity);
126 * Sends an advanced notification to log. Log notifications are not pushed to user
127 * devices but are shown to all account users in notifications log
129 * @param message the {@link String} containing a message to send to specified user id
130 * @param icon the {@link String} containing a name of the icon to be used with this notification
131 * @param severity the {@link String} containing severity (good, info, warning, error) of notification
133 public void sendLogNotification(String message, @Nullable String icon, @Nullable String severity) {
134 logger.debug("Sending log message '{}'", message);
135 cloudClient.sendLogNotification(message, icon, severity);
139 * Sends a broadcast notification. Broadcast notifications are pushed to all
140 * mobile devices of all users of the account
142 * @param message the {@link String} containing a message to send to specified user id
143 * @param icon the {@link String} containing a name of the icon to be used with this notification
144 * @param severity the {@link String} containing severity (good, info, warning, error) of notification
146 public void sendBroadcastNotification(String message, @Nullable String icon, @Nullable String severity) {
147 logger.debug("Sending broadcast message '{}' to all users", message);
148 cloudClient.sendBroadcastNotification(message, icon, severity);
151 private String substringBefore(String str, String separator) {
152 int index = str.indexOf(separator);
153 return index == -1 ? str : str.substring(0, index);
157 protected void activate(BundleContext context, Map<String, ?> config) {
158 clientVersion = substringBefore(context.getBundle().getVersion().toString(), ".qualifier");
159 localPort = HttpServiceUtil.getHttpServicePort(context);
160 if (localPort == -1) {
161 logger.warn("openHAB Cloud connector not started, since no local HTTP port could be determined");
163 logger.debug("openHAB Cloud connector activated");
169 private void checkJavaVersion() {
170 String version = System.getProperty("java.version");
171 if (version.charAt(2) == '8') {
172 // we are on Java 8, let's check the update
173 String update = version.substring(version.indexOf('_') + 1);
175 Integer uVersion = Integer.valueOf(update);
176 if (uVersion < 101) {
178 "You are running Java {} - the openhab Cloud connection requires at least Java 1.8.0_101, if your cloud server uses Let's Encrypt certificates!",
181 } catch (NumberFormatException e) {
182 logger.debug("Could not determine update version of java {}", version);
188 protected void deactivate() {
189 logger.debug("openHAB Cloud connector deactivated");
190 cloudClient.shutdown();
193 } catch (Exception e) {
194 logger.debug("Could not stop Jetty http client", e);
199 protected void modified(Map<String, ?> config) {
200 if (config != null && config.get(CFG_MODE) != null) {
201 remoteAccessEnabled = "remote".equals(config.get(CFG_MODE));
203 logger.debug("remoteAccessEnabled is not set, keeping value '{}'", remoteAccessEnabled);
206 if (config.get(CFG_BASE_URL) != null) {
207 cloudBaseUrl = (String) config.get(CFG_BASE_URL);
209 cloudBaseUrl = DEFAULT_URL;
212 exposedItems = new HashSet<>();
213 Object expCfg = config.get(CFG_EXPOSE);
214 if (expCfg instanceof String value) {
215 while (value.startsWith("[")) {
216 value = value.substring(1);
218 while (value.endsWith("]")) {
219 value = value.substring(0, value.length() - 1);
221 for (String itemName : Arrays.asList((value).split(","))) {
222 exposedItems.add(itemName.trim());
224 } else if (expCfg instanceof Iterable iterable) {
225 for (Object entry : iterable) {
226 exposedItems.add(entry.toString());
230 logger.debug("UUID = {}, secret = {}", censored(InstanceUUID.get()), censored(getSecret()));
232 if (cloudClient != null) {
233 cloudClient.shutdown();
236 if (!httpClient.isRunning()) {
239 // we act as a blind proxy, don't try to auto decode content
240 httpClient.getContentDecoderFactories().clear();
241 } catch (Exception e) {
242 logger.error("Could not start Jetty http client", e);
246 String localBaseUrl = "http://localhost:" + localPort;
247 cloudClient = new CloudClient(httpClient, InstanceUUID.get(), getSecret(), cloudBaseUrl, localBaseUrl,
248 remoteAccessEnabled, exposedItems);
249 cloudClient.connect();
250 cloudClient.setListener(this);
251 NotificationAction.cloudService = this;
255 public String getActionClassName() {
256 return NotificationAction.class.getCanonicalName();
260 public Class<?> getActionClass() {
261 return NotificationAction.class;
265 * Reads the first line from specified file
268 private String readFirstLine(File file) {
269 List<String> lines = null;
271 lines = Files.readAllLines(file.toPath(), StandardCharsets.UTF_8);
272 } catch (IOException e) {
273 // no exception handling - we just return the empty String
275 return lines == null || lines.isEmpty() ? "" : lines.get(0);
279 * Writes a String to a specified file
282 private void writeFile(File file, String content) {
283 // create intermediary directories
284 file.getParentFile().mkdirs();
286 Files.writeString(file.toPath(), content, StandardCharsets.UTF_8);
287 logger.debug("Created file '{}' with content '{}'", file.getAbsolutePath(), censored(content));
288 } catch (FileNotFoundException e) {
289 logger.error("Couldn't create file '{}'.", file.getPath(), e);
290 } catch (IOException e) {
291 logger.error("Couldn't write to file '{}'.", file.getPath(), e);
295 private String randomString(int length) {
296 StringBuilder sb = new StringBuilder(length);
297 for (int i = 0; i < length; i++) {
298 sb.append(CHARS.charAt(SR.nextInt(CHARS.length())));
300 return sb.toString();
304 * Creates a random secret and writes it to the <code>userdata/openhabcloud</code>
305 * directory. An existing <code>secret</code> file won't be overwritten.
306 * Returns either existing secret from the file or newly created secret.
308 private String getSecret() {
309 File file = new File(OpenHAB.getUserDataFolder() + File.separator + SECRET_FILE_NAME);
310 String newSecretString = "";
312 if (!file.exists()) {
313 newSecretString = randomString(20);
314 logger.debug("New secret = {}", censored(newSecretString));
315 writeFile(file, newSecretString);
317 newSecretString = readFirstLine(file);
318 logger.debug("Using secret at '{}' with content '{}'", file.getAbsolutePath(), censored(newSecretString));
321 return newSecretString;
324 private static String censored(String secret) {
325 if (secret.length() < 4) {
328 return secret.substring(0, 2) + "..." + secret.substring(secret.length() - 2, secret.length());
332 public void sendCommand(String itemName, String commandString) {
334 Item item = itemRegistry.getItem(itemName);
335 Command command = null;
336 if ("toggle".equalsIgnoreCase(commandString)
337 && (item instanceof SwitchItem || item instanceof RollershutterItem)) {
338 if (OnOffType.ON.equals(item.getStateAs(OnOffType.class))) {
339 command = OnOffType.OFF;
341 if (OnOffType.OFF.equals(item.getStateAs(OnOffType.class))) {
342 command = OnOffType.ON;
344 if (UpDownType.UP.equals(item.getStateAs(UpDownType.class))) {
345 command = UpDownType.DOWN;
347 if (UpDownType.DOWN.equals(item.getStateAs(UpDownType.class))) {
348 command = UpDownType.UP;
351 command = TypeParser.parseCommand(item.getAcceptedCommandTypes(), commandString);
353 if (command != null) {
354 logger.debug("Received command '{}' for item '{}'", commandString, itemName);
355 eventPublisher.post(ItemEventFactory.createCommandEvent(itemName, command));
357 logger.warn("Received invalid command '{}' for item '{}'", commandString, itemName);
359 } catch (ItemNotFoundException e) {
360 logger.warn("Received command '{}' for a non-existent item '{}'", commandString, itemName);
365 public Set<String> getSubscribedEventTypes() {
366 return Set.of(ItemStateEvent.TYPE);
370 public EventFilter getEventFilter() {
375 public void receive(Event event) {
376 ItemStateEvent ise = (ItemStateEvent) event;
377 if (supportsUpdates() && exposedItems != null && exposedItems.contains(ise.getItemName())) {
378 cloudClient.sendItemUpdate(ise.getItemName(), ise.getItemState().toString());
382 private boolean supportsUpdates() {
383 return cloudBaseUrl.indexOf(CFG_BASE_URL) >= 0;