2 * XdccDownloader - Core.java - Copyright © 2013 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.xdcc.core;
20 import java.io.IOException;
21 import java.util.Collection;
22 import java.util.Collections;
23 import java.util.List;
25 import java.util.Map.Entry;
26 import java.util.logging.Level;
27 import java.util.logging.Logger;
29 import net.pterodactylus.irc.Connection;
30 import net.pterodactylus.irc.ConnectionBuilder;
31 import net.pterodactylus.irc.DccReceiver;
32 import net.pterodactylus.irc.event.ChannelMessageReceived;
33 import net.pterodactylus.irc.event.ConnectionEstablished;
34 import net.pterodactylus.irc.util.MessageCleaner;
35 import net.pterodactylus.irc.util.RandomNickname;
36 import net.pterodactylus.xdcc.core.event.BotAdded;
37 import net.pterodactylus.xdcc.core.event.CoreStarted;
38 import net.pterodactylus.xdcc.data.Bot;
39 import net.pterodactylus.xdcc.data.Channel;
40 import net.pterodactylus.xdcc.data.Network;
41 import net.pterodactylus.xdcc.data.Pack;
42 import net.pterodactylus.xdcc.data.Server;
44 import com.google.common.base.Optional;
45 import com.google.common.collect.HashBasedTable;
46 import com.google.common.collect.Lists;
47 import com.google.common.collect.Maps;
48 import com.google.common.collect.Sets;
49 import com.google.common.collect.Table;
50 import com.google.common.eventbus.EventBus;
51 import com.google.common.eventbus.Subscribe;
52 import com.google.common.util.concurrent.AbstractIdleService;
53 import com.google.inject.Inject;
56 * The core of XDCC Downloader.
58 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
60 public class Core extends AbstractIdleService {
63 private static final Logger logger = Logger.getLogger(Core.class.getName());
66 private final EventBus eventBus;
68 /** The channels that should be monitored. */
69 private final Collection<Channel> channels = Sets.newHashSet();
71 /** The current network connections. */
72 private final Map<Network, Connection> networkConnections = Collections.synchronizedMap(Maps.<Network, Connection>newHashMap());
74 /** The currently known bots. */
75 private final Table<Network, String, Bot> networkBots = HashBasedTable.create();
77 /** The current DCC receivers. */
78 private final Collection<DccReceiver> dccReceivers = Sets.newHashSet();
87 public Core(EventBus eventBus) {
88 this.eventBus = eventBus;
96 * Returns all currently known bots.
98 * @return All currently known bots
100 public Collection<Bot> bots() {
101 return networkBots.values();
105 * Returns the currently active DCC receivers.
107 * @return The currently active DCC receivers
109 public Collection<DccReceiver> dccReceivers() {
118 * Adds a channel to monitor.
121 * The channel to monitor
123 public void addChannel(Channel channel) {
124 channels.add(channel);
128 // ABSTRACTIDLESERVICE METHODS
132 protected void startUp() {
133 for (Channel channel : channels) {
134 logger.info(String.format("Connecting to Channel %s on Network %s…", channel.name(), channel.network().name()));
135 if (!networkConnections.containsKey(channel.network())) {
136 /* select a random server. */
137 List<Server> servers = Lists.newArrayList(channel.network().servers());
138 Server server = servers.get((int) (Math.random() * servers.size()));
139 Connection connection = new ConnectionBuilder(eventBus).connect(server.hostname()).port(server.unencryptedPorts().iterator().next()).build();
140 connection.username(RandomNickname.get()).realName(RandomNickname.get());
141 networkConnections.put(channel.network(), connection);
146 /* notify listeners. */
147 eventBus.post(new CoreStarted(this));
151 protected void shutDown() {
159 * If a connection to a network has been established, the channels associated
160 * with this network are joined.
162 * @param connectionEstablished
163 * The connection established event
166 public void connectionEstablished(ConnectionEstablished connectionEstablished) {
168 /* get network for connection. */
169 Optional<Network> network = getNetwork(connectionEstablished.connection());
172 if (!network.isPresent()) {
176 /* join all channels on this network. */
177 for (Channel channel : channels) {
178 if (channel.network().equals(network.get())) {
180 connectionEstablished.connection().joinChannel(channel.name());
181 } catch (IOException ioe1) {
182 logger.log(Level.WARNING, String.format("Could not join %s on %s!", channel.name(), network.get().name()), ioe1);
189 * If a message on a channel is received, it is parsed for pack information
190 * with is then added to a bot.
192 * @param channelMessageReceived
193 * The channel message received event
196 public void channelMessageReceived(ChannelMessageReceived channelMessageReceived) {
197 String message = MessageCleaner.getDefaultInstance().clean(channelMessageReceived.message());
198 if (!message.startsWith("#")) {
199 /* most probably not a pack announcement. */
203 Optional<Network> network = getNetwork(channelMessageReceived.connection());
204 if (!network.isPresent()) {
205 /* message for unknown connection? */
209 /* parse pack information. */
210 Optional<Pack> pack = parsePack(message);
211 if (!pack.isPresent()) {
216 synchronized (networkBots) {
217 if (!networkBots.contains(network.get(), channelMessageReceived.source().nick().get())) {
218 bot = new Bot(network.get()).name(channelMessageReceived.source().nick().get());
219 networkBots.put(network.get(), channelMessageReceived.source().nick().get(), bot);
220 eventBus.post(new BotAdded(bot));
222 bot = networkBots.get(network.get(), channelMessageReceived.source().nick().get());
227 bot.addPack(pack.get());
228 logger.fine(String.format("Bot %s now has %d packs.", bot, bot.packs().size()));
236 * Searches all current connections for the given connection, returning the
237 * associated network.
240 * The connection to get the network for
241 * @return The network belonging to the connection, or {@link
244 private Optional<Network> getNetwork(Connection connection) {
245 for (Entry<Network, Connection> networkConnectionEntry : networkConnections.entrySet()) {
246 if (networkConnectionEntry.getValue().equals(connection)) {
247 return Optional.of(networkConnectionEntry.getKey());
250 return Optional.absent();
254 * Parses {@link Pack} information from the given message.
257 * The message to parse pack information from
258 * @return The parsed pack, or {@link Optional#absent()} if the message could
259 * not be parsed into a pack
261 private Optional<Pack> parsePack(String message) {
262 int squareOpen = message.indexOf('[');
263 int squareClose = message.indexOf(']', squareOpen);
264 if ((squareOpen == -1) && (squareClose == -1)) {
265 return Optional.absent();
267 String packSize = message.substring(squareOpen + 1, squareClose);
268 String packName = message.substring(message.lastIndexOf(' ') + 1);
269 String packIndex = message.substring(0, message.indexOf(' ')).substring(1);
270 return Optional.of(new Pack(packIndex, packSize, packName));