--- /dev/null
+/*
+ * Sone - UpdateChecker.java - Copyright © 2011 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.core;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.MalformedURLException;
+import java.util.Date;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import net.pterodactylus.sone.main.SonePlugin;
+import net.pterodactylus.util.collection.Pair;
+import net.pterodactylus.util.io.Closer;
+import net.pterodactylus.util.logging.Logging;
+import net.pterodactylus.util.version.Version;
+import freenet.client.FetchResult;
+import freenet.keys.FreenetURI;
+import freenet.support.api.Bucket;
+
+/**
+ * Watches the official Sone homepage for new releases.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class UpdateChecker {
+
+ /** The logger. */
+ private static final Logger logger = Logging.getLogger(UpdateChecker.class);
+
+ /** The key of the Sone homepage. */
+ private static final String SONE_HOMEPAGE = "USK@nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI,DuQSUZiI~agF8c-6tjsFFGuZ8eICrzWCILB60nT8KKo,AQACAAE/sone/";
+
+ /** The current latest known edition. */
+ private static final int LATEST_EDITION = 23;
+
+ /** The Freenet interface. */
+ private final FreenetInterface freenetInterface;
+
+ /** The update listener manager. */
+ private final UpdateListenerManager updateListenerManager = new UpdateListenerManager();
+
+ /** The current URI of the homepage. */
+ private FreenetURI currentUri;
+
+ /** The current latest known version. */
+ private Version currentLatestVersion = SonePlugin.VERSION;
+
+ /** The release date of the latest version. */
+ private long latestVersionDate;
+
+ /**
+ * Creates a new update checker.
+ *
+ * @param freenetInterface
+ * The freenet interface to use
+ */
+ public UpdateChecker(FreenetInterface freenetInterface) {
+ this.freenetInterface = freenetInterface;
+ }
+
+ //
+ // EVENT LISTENER MANAGEMENT
+ //
+
+ /**
+ * Adds the given listener to the list of registered listeners.
+ *
+ * @param updateListener
+ * The listener to add
+ */
+ public void addUpdateListener(UpdateListener updateListener) {
+ updateListenerManager.addListener(updateListener);
+ }
+
+ /**
+ * Removes the given listener from the list of registered listeners.
+ *
+ * @param updateListener
+ * The listener to remove
+ */
+ public void removeUpdateListener(UpdateListener updateListener) {
+ updateListenerManager.removeListener(updateListener);
+ }
+
+ //
+ // ACCESSORS
+ //
+
+ /**
+ * Returns whether a version that is later than the currently running
+ * version has been found.
+ *
+ * @return {@code true} if a new version was found
+ */
+ public boolean hasLatestVersion() {
+ return currentLatestVersion.compareTo(SonePlugin.VERSION) > 0;
+ }
+
+ /**
+ * Returns the latest version. If no new latest version has been found, the
+ * current version is returned.
+ *
+ * @return The latest known version
+ */
+ public Version getLatestVersion() {
+ return currentLatestVersion;
+ }
+
+ /**
+ * Returns the release time of the latest version. If no new latest version
+ * has been found, the returned value is undefined.
+ *
+ * @return The release time of the latest version, if a new version was
+ * found
+ */
+ public long getLatestVersionDate() {
+ return latestVersionDate;
+ }
+
+ //
+ // ACTIONS
+ //
+
+ /**
+ * Starts the update checker.
+ */
+ public void start() {
+ try {
+ currentUri = new FreenetURI(SONE_HOMEPAGE + LATEST_EDITION);
+ } catch (MalformedURLException mue1) {
+ /* this can not really happen unless I screw up. */
+ logger.log(Level.SEVERE, "Sone Homepage URI invalid!", mue1);
+ }
+ freenetInterface.registerUsk(currentUri, new FreenetInterface.Callback() {
+
+ @Override
+ @SuppressWarnings("synthetic-access")
+ public void editionFound(FreenetURI uri, long edition, boolean newKnownGood, boolean newSlot) {
+ logger.log(Level.FINEST, "Found update for %s: %d, %s, %s", new Object[] { uri, edition, newKnownGood, newSlot });
+ if (newKnownGood || newSlot) {
+ Pair<FreenetURI, FetchResult> uriResult = freenetInterface.fetchUri(uri.setMetaString(new String[] { "sone.properties" }));
+ if (uriResult == null) {
+ logger.log(Level.WARNING, "Could not fetch properties of latest homepage: %s", uri);
+ return;
+ }
+ Bucket resultBucket = uriResult.getRight().asBucket();
+ try {
+ parseProperties(resultBucket.getInputStream());
+ } catch (IOException ioe1) {
+ logger.log(Level.WARNING, "Could not parse sone.properties of " + uri, ioe1);
+ } finally {
+ resultBucket.free();
+ }
+ }
+ }
+ });
+ }
+
+ /**
+ * Stops the update checker.
+ */
+ public void stop() {
+ freenetInterface.unregisterUsk(currentUri);
+ }
+
+ //
+ // PRIVATE ACTIONS
+ //
+
+ /**
+ * Parses the properties of the latest version and fires events, if
+ * necessary.
+ *
+ * @see UpdateListener#updateFound(Version, long)
+ * @see UpdateListenerManager#fireUpdateFound(Version, long)
+ * @param propertiesInputStream
+ * The input stream to parse
+ * @throws IOException
+ * if an I/O error occured
+ */
+ private void parseProperties(InputStream propertiesInputStream) throws IOException {
+ Properties properties = new Properties();
+ InputStreamReader inputStreamReader = null;
+ try {
+ inputStreamReader = new InputStreamReader(propertiesInputStream, "UTF-8");
+ properties.load(inputStreamReader);
+ } finally {
+ Closer.close(inputStreamReader);
+ }
+ String versionString = properties.getProperty("CurrentVersion/Version");
+ String releaseTimeString = properties.getProperty("CurrentVersion/ReleaseTime");
+ if ((versionString == null) || (releaseTimeString == null)) {
+ logger.log(Level.INFO, "Invalid data parsed from properties.");
+ return;
+ }
+ Version version = Version.parse(versionString);
+ long releaseTime = 0;
+ try {
+ releaseTime = Long.parseLong(releaseTimeString);
+ } catch (NumberFormatException nfe1) {
+ /* ignore. */
+ }
+ if ((version == null) || (releaseTime == 0)) {
+ logger.log(Level.INFO, "Could not parse data from properties.");
+ return;
+ }
+ if (version.compareTo(currentLatestVersion) > 0) {
+ currentLatestVersion = version;
+ latestVersionDate = releaseTime;
+ logger.log(Level.INFO, "Found new version: %s (%tc)", new Object[] { version, new Date(releaseTime) });
+ updateListenerManager.fireUpdateFound(version, releaseTime);
+ }
+ }
+
+}
--- /dev/null
+/*
+ * Sone - UpdateListenerManager.java - Copyright © 2011 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.core;
+
+import net.pterodactylus.util.event.AbstractListenerManager;
+import net.pterodactylus.util.version.Version;
+
+/**
+ * Listener manager for {@link UpdateListener} events.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class UpdateListenerManager extends AbstractListenerManager<Void, UpdateListener> {
+
+ /**
+ * Creates a new update listener manager.
+ */
+ public UpdateListenerManager() {
+ super(null);
+ }
+
+ //
+ // ACTIONS
+ //
+
+ /**
+ * Notifies all listeners that a new version has been found.
+ *
+ * @param version
+ * The new version
+ * @param releaseTime
+ * The release time of the new version
+ */
+ void fireUpdateFound(Version version, long releaseTime) {
+ for (UpdateListener updateListener : getListeners()) {
+ updateListener.updateFound(version, releaseTime);
+ }
+ }
+
+}
projects / Sone.git / commitdiff