+++ /dev/null
-/*
- * Sone - UpdateChecker.java - Copyright © 2011–2019 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 static java.util.logging.Logger.getLogger;
-
-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 javax.inject.Singleton;
-
-import net.pterodactylus.sone.core.event.UpdateFoundEvent;
-import net.pterodactylus.sone.main.PluginHomepage;
-import net.pterodactylus.sone.main.SonePlugin;
-import net.pterodactylus.util.io.Closer;
-import net.pterodactylus.util.version.Version;
-
-import com.google.common.eventbus.EventBus;
-import com.google.inject.Inject;
-
-import freenet.keys.FreenetURI;
-import freenet.support.api.Bucket;
-
-/**
- * Watches the official Sone homepage for new releases.
- */
-@Singleton
-public class UpdateChecker {
-
- /** The logger. */
- private static final Logger logger = getLogger(UpdateChecker.class.getName());
-
- /** The event bus. */
- private final EventBus eventBus;
-
- /** The Freenet interface. */
- private final FreenetInterface freenetInterface;
-
- /** The current URI of the homepage. */
- private FreenetURI currentUri;
-
- /** The latest known edition. */
- private long latestEdition = SonePlugin.getLatestEdition();
-
- /** The current latest known version. */
- private Version currentLatestVersion;
- private final Version currentRunningVersion;
-
- /** The release date of the latest version. */
- private long latestVersionDate;
-
- private final PluginHomepage pluginHomepage;
-
- /**
- * Creates a new update checker.
- *
- * @param eventBus
- * The event bus
- * @param freenetInterface
- * The freenet interface to use
- */
- @Inject
- public UpdateChecker(EventBus eventBus, FreenetInterface freenetInterface, Version currentVersion, PluginHomepage pluginHomepage) {
- this.eventBus = eventBus;
- this.freenetInterface = freenetInterface;
- this.currentRunningVersion = currentVersion;
- this.currentLatestVersion = currentVersion;
- this.pluginHomepage = pluginHomepage;
- }
-
- //
- // 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(currentRunningVersion) > 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;
- }
-
- /**
- * Returns the latest known edition of the Sone homepage.
- *
- * @return The latest edition of the Sone homepage
- */
- public long getLatestEdition() {
- return latestEdition;
- }
-
- //
- // ACTIONS
- //
-
- /**
- * Starts the update checker.
- */
- public void start() {
- try {
- currentUri = new FreenetURI(pluginHomepage.getHomepage());
- } 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, String.format("Found update for %s: %d, %s, %s", uri, edition, newKnownGood, newSlot));
- if (newKnownGood || newSlot) {
- Fetched uriResult = freenetInterface.fetchUri(uri.setMetaString(new String[] { "sone.properties" }));
- if (uriResult == null) {
- logger.log(Level.WARNING, String.format("Could not fetch properties of latest homepage: %s", uri));
- return;
- }
- Bucket resultBucket = uriResult.getFetchResult().asBucket();
- try {
- parseProperties(resultBucket.getInputStream(), edition);
- latestEdition = edition;
- } catch (IOException ioe1) {
- logger.log(Level.WARNING, String.format("Could not parse sone.properties of %s!", 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 UpdateFoundEvent
- * @param propertiesInputStream
- * The input stream to parse
- * @param edition
- * The latest edition of the Sone homepage
- * @throws IOException
- * if an I/O error occured
- */
- private void parseProperties(InputStream propertiesInputStream, long edition) 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;
- boolean disruptive = disruptiveVersionBetweenCurrentAndFound(properties);
- logger.log(Level.INFO, String.format("Found new version: %s (%tc%s)", version, new Date(releaseTime), disruptive ? ", disruptive" : ""));
- eventBus.post(new UpdateFoundEvent(version, releaseTime, edition, disruptive));
- }
- }
-
- private boolean disruptiveVersionBetweenCurrentAndFound(Properties properties) {
- for (String key : properties.stringPropertyNames()) {
- if (key.startsWith("DisruptiveVersion/")) {
- Version disruptiveVersion = Version.parse(key.substring("DisruptiveVersion/".length()));
- if (disruptiveVersion.compareTo(currentRunningVersion) > 0) {
- return true;
- }
- }
- }
- return false;
- }
-
-}
projects / Sone.git / blobdiff