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 static java.lang.String.format;
21 import static java.lang.System.currentTimeMillis;
22 import static java.util.concurrent.TimeUnit.HOURS;
23 import static net.pterodactylus.irc.event.ChannelNotJoined.Reason.banned;
24 import static net.pterodactylus.irc.event.ChannelNotJoined.Reason.registeredNicknamesOnly;
25 import static net.pterodactylus.irc.util.MessageCleaner.getDefaultInstance;
26 import static net.pterodactylus.xdcc.data.Channel.TO_NETWORK;
27 import static net.pterodactylus.xdcc.data.Download.FILTER_RUNNING;
30 import java.io.FileNotFoundException;
31 import java.io.FileOutputStream;
32 import java.io.IOException;
33 import java.io.OutputStream;
34 import java.util.Collection;
35 import java.util.Collections;
36 import java.util.Iterator;
37 import java.util.List;
39 import java.util.Map.Entry;
40 import java.util.concurrent.TimeUnit;
42 import net.pterodactylus.irc.Connection;
43 import net.pterodactylus.irc.ConnectionBuilder;
44 import net.pterodactylus.irc.DccReceiver;
45 import net.pterodactylus.irc.event.ChannelJoined;
46 import net.pterodactylus.irc.event.ChannelLeft;
47 import net.pterodactylus.irc.event.ChannelMessageReceived;
48 import net.pterodactylus.irc.event.ChannelNotJoined;
49 import net.pterodactylus.irc.event.ClientQuit;
50 import net.pterodactylus.irc.event.ConnectionClosed;
51 import net.pterodactylus.irc.event.ConnectionEstablished;
52 import net.pterodactylus.irc.event.ConnectionFailed;
53 import net.pterodactylus.irc.event.DccAcceptReceived;
54 import net.pterodactylus.irc.event.DccDownloadFailed;
55 import net.pterodactylus.irc.event.DccDownloadFinished;
56 import net.pterodactylus.irc.event.DccSendReceived;
57 import net.pterodactylus.irc.event.KickedFromChannel;
58 import net.pterodactylus.irc.event.NicknameChanged;
59 import net.pterodactylus.irc.event.PrivateMessageReceived;
60 import net.pterodactylus.irc.event.PrivateNoticeReceived;
61 import net.pterodactylus.irc.event.ReplyReceived;
62 import net.pterodactylus.irc.util.RandomNickname;
63 import net.pterodactylus.xdcc.core.event.BotAdded;
64 import net.pterodactylus.xdcc.core.event.CoreStarted;
65 import net.pterodactylus.xdcc.core.event.DownloadFailed;
66 import net.pterodactylus.xdcc.core.event.DownloadFinished;
67 import net.pterodactylus.xdcc.core.event.DownloadStarted;
68 import net.pterodactylus.xdcc.core.event.GenericError;
69 import net.pterodactylus.xdcc.core.event.GenericMessage;
70 import net.pterodactylus.xdcc.core.event.MessageReceived;
71 import net.pterodactylus.xdcc.data.Bot;
72 import net.pterodactylus.xdcc.data.Channel;
73 import net.pterodactylus.xdcc.data.Download;
74 import net.pterodactylus.xdcc.data.Network;
75 import net.pterodactylus.xdcc.data.Pack;
76 import net.pterodactylus.xdcc.data.Server;
78 import com.google.common.base.Function;
79 import com.google.common.base.Optional;
80 import com.google.common.base.Predicate;
81 import com.google.common.collect.FluentIterable;
82 import com.google.common.collect.HashBasedTable;
83 import com.google.common.collect.HashMultimap;
84 import com.google.common.collect.ImmutableList;
85 import com.google.common.collect.ImmutableSet;
86 import com.google.common.collect.Lists;
87 import com.google.common.collect.Maps;
88 import com.google.common.collect.Multimap;
89 import com.google.common.collect.Sets;
90 import com.google.common.collect.Table;
91 import com.google.common.eventbus.EventBus;
92 import com.google.common.eventbus.Subscribe;
93 import com.google.common.io.Closeables;
94 import com.google.common.util.concurrent.AbstractExecutionThreadService;
95 import com.google.inject.Inject;
96 import org.apache.log4j.Logger;
99 * The core of XDCC Downloader.
101 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
103 public class Core extends AbstractExecutionThreadService {
106 private static final Logger logger = Logger.getLogger(Core.class.getName());
108 /** The event bus. */
109 private final EventBus eventBus;
110 private final ChannelBanManager channelBanManager =
111 new ChannelBanManager();
113 /** The temporary directory to download files to. */
114 private final String temporaryDirectory;
116 /** The directory to move finished downloads to. */
117 private final String finalDirectory;
119 /** The channels that should be monitored. */
120 private final Collection<Channel> channels = Sets.newHashSet();
122 /** The channels that are currentlymonitored. */
123 private final Collection<Channel> joinedChannels = Sets.newHashSet();
125 /** The channels that are joined but not configured. */
126 private final Collection<Channel> extraChannels = Sets.newHashSet();
128 /** The current network connections. */
129 private final Map<Network, Connection> networkConnections = Collections.synchronizedMap(Maps.<Network, Connection>newHashMap());
131 /** The currently known bots. */
132 private final Table<Network, String, Bot> networkBots = HashBasedTable.create();
134 /** The current downloads. */
135 private final Multimap<String, Download> downloads = HashMultimap.create();
137 /** The current DCC receivers. */
138 private final Collection<DccReceiver> dccReceivers = Lists.newArrayList();
141 * Creates a new core.
145 * @param temporaryDirectory
146 * The directory to download files to
147 * @param finalDirectory
148 * The directory to move finished files to
151 public Core(EventBus eventBus, String temporaryDirectory, String finalDirectory) {
152 this.eventBus = eventBus;
153 this.temporaryDirectory = temporaryDirectory;
154 this.finalDirectory = finalDirectory;
162 * Returns all currently known connections.
164 * @return All currently known connections
166 public Collection<Connection> connections() {
167 return networkConnections.values();
171 * Returns all defined networks.
173 * @return All defined networks
175 public Collection<Network> networks() {
176 return FluentIterable.from(channels).transform(TO_NETWORK).toSet();
180 * Returns all connected networks.
182 * @return All connected networks
184 public Collection<Network> connectedNetworks() {
185 return Lists.newArrayList(Optional.presentInstances(FluentIterable.from(networkConnections.values()).transform(new Function<Connection, Optional<Network>>() {
187 public Optional<Network> apply(Connection connection) {
188 return getNetwork(connection);
194 * Returns all configured channels. Due to various circumstances, configured
195 * channels might not actually be joined.
197 * @return All configured channels
199 public Collection<Channel> channels() {
200 return ImmutableSet.copyOf(channels);
204 * Returns all currently joined channels.
206 * @return All currently joined channels
208 public Collection<Channel> joinedChannels() {
209 return ImmutableSet.copyOf(joinedChannels);
213 * Returns all currently joined channels that are not configured.
215 * @return All currently joined but not configured channels
217 public Collection<Channel> extraChannels() {
218 return ImmutableSet.copyOf(extraChannels);
222 * Returns all currently known bots.
224 * @return All currently known bots
226 public Collection<Bot> bots() {
227 return networkBots.values();
231 * Returns all currently running downloads.
233 * @return All currently running downloads
235 public Collection<Download> downloads() {
236 return downloads.values();
244 * Adds a channel to monitor.
247 * The channel to monitor
249 public void addChannel(Channel channel) {
250 channels.add(channel);
254 * Fetches the given pack from the given bot.
257 * The bot to fetch the pack from
261 public void fetch(Bot bot, Pack pack) {
262 Connection connection = networkConnections.get(bot.network());
263 if (connection == null) {
267 /* check if we are already downloading the file? */
268 if (downloads.containsKey(pack.name())) {
269 Collection<Download> packDownloads = downloads.get(pack.name());
270 Collection<Download> runningDownloads = FluentIterable.from(packDownloads).filter(FILTER_RUNNING).toSet();
271 if (!runningDownloads.isEmpty()) {
272 Download download = runningDownloads.iterator().next();
273 eventBus.post(new GenericMessage(String.format("File %s is already downloading from %s (%s).", pack.name(), download.bot().name(), download.bot().network().name())));
276 StringBuilder bots = new StringBuilder();
277 for (Download download : packDownloads) {
278 if (bots.length() > 0) {
281 bots.append(download.bot().name()).append(" (").append(download.bot().network().name()).append(')');
283 eventBus.post(new GenericMessage(String.format("File %s is already requested from %d bots (%s).", pack.name(), packDownloads.size(), bots.toString())));
286 Download download = new Download(bot, pack);
287 downloads.put(pack.name(), download);
290 connection.sendMessage(bot.name(), "XDCC SEND " + pack.id());
291 } catch (IOException ioe1) {
292 logger.warn("Could not send message to bot!", ioe1);
297 * Cancels the download of the given pack from the given bot.
300 * The bot the pack is being downloaded from
302 * The pack being downloaded
304 public void cancelDownload(Bot bot, Pack pack) {
305 Optional<Download> download = getDownload(pack, bot);
306 if (!download.isPresent()) {
310 /* get connection. */
311 Connection connection = networkConnections.get(bot.network());
312 if (connection == null) {
313 /* request for unknown network? */
317 /* stop the DCC receiver. */
318 if (download.get().dccReceiver() != null) {
319 download.get().dccReceiver().stop();
321 /* remove download if it hasn’t started yet. */
322 downloads.remove(pack.name(), download.get());
325 /* remove the request from the bot, too. */
327 connection.sendMessage(bot.name(), String.format("XDCC %s", (download.get().dccReceiver() != null) ? "CANCEL" : "REMOVE"));
328 } catch (IOException ioe1) {
329 logger.warn(String.format("Could not cancel DCC from %s (%s)!", bot.name(), bot.network().name()), ioe1);
334 * Closes the given connection.
337 * The connection to close
339 public void closeConnection(Connection connection) {
342 } catch (IOException ioe1) {
348 // ABSTRACTIDLESERVICE METHODS
352 protected void startUp() {
353 for (Channel channel : channels) {
354 logger.info(String.format("Connecting to Channel %s on Network %s…", channel.name(), channel.network().name()));
355 connectNetwork(channel.network());
358 /* notify listeners. */
359 eventBus.post(new CoreStarted(this));
363 protected void run() throws Exception {
364 while (isRunning()) {
366 Thread.sleep(TimeUnit.MINUTES.toMillis(1));
367 } catch (InterruptedException ie1) {
371 /* find channels that should be monitored but are not. */
372 for (Channel channel : channels) {
373 if (joinedChannels.contains(channel)) {
377 /* are we banned from this channel? */
378 if (channelBanManager.isBanned(channel)) {
382 connectNetwork(channel.network());
383 Connection connection = networkConnections.get(channel.network());
384 if (connection.established()) {
385 eventBus.post(new GenericMessage(String.format("Trying to join %s on %s.", channel.name(), channel.network().name())));
387 connection.joinChannel(channel.name());
388 } catch (IOException ioe1) {
389 eventBus.post(new GenericMessage(String.format("Could not join %s on %s.", channel.name(), channel.network().name())));
397 protected void shutDown() {
405 * Starts a new connection for the given network if no such connection exists
409 * The network to connect to
411 private void connectNetwork(Network network) {
412 if (!networkConnections.containsKey(network)) {
413 /* select a random server. */
414 List<Server> servers = Lists.newArrayList(network.servers());
415 if (servers.isEmpty()) {
416 eventBus.post(new GenericError(String.format("Network %s does not have any servers.", network.name())));
419 Server server = servers.get((int) (Math.random() * servers.size()));
420 Connection connection = new ConnectionBuilder(eventBus).connect(server.hostname()).port(server.unencryptedPorts().iterator().next()).build();
421 connection.username(RandomNickname.get()).realName(RandomNickname.get());
422 networkConnections.put(network, connection);
428 * Removes the given connection and all its channels and bots.
431 * The connection to remove
433 private void removeConnection(Connection connection) {
434 Optional<Network> network = getNetwork(connection);
435 if (!network.isPresent()) {
439 /* find all channels that need to be removed. */
440 for (Collection<Channel> channels : ImmutableList.of(joinedChannels, extraChannels)) {
441 for (Iterator<Channel> channelIterator = channels.iterator(); channelIterator.hasNext(); ) {
442 Channel joinedChannel = channelIterator.next();
443 if (!joinedChannel.network().equals(network.get())) {
447 channelIterator.remove();
451 /* now remove all bots for that network. */
452 Map<String, Bot> bots = networkBots.row(network.get());
453 int botCount = bots.size();
455 for (Bot bot : bots.values()) {
456 packCount += bot.packs().size();
459 eventBus.post(new GenericMessage(String.format("Network %s disconnected, %d bots removed, %d packs removed.", network.get().name(), botCount, packCount)));
461 /* now remove the network. */
462 networkConnections.remove(network.get());
470 * If a connection to a network has been established, the channels associated
471 * with this network are joined.
473 * @param connectionEstablished
474 * The connection established event
477 public void connectionEstablished(ConnectionEstablished connectionEstablished) {
479 /* get network for connection. */
480 Optional<Network> network = getNetwork(connectionEstablished.connection());
483 if (!network.isPresent()) {
484 eventBus.post(new GenericMessage(String.format("Connected to unknown network: %s", connectionEstablished.connection().hostname())));
488 eventBus.post(new GenericMessage(String.format("Connected to network %s.", network.get().name())));
490 /* join all channels on this network. */
491 for (Channel channel : channels) {
492 if (channel.network().equals(network.get())) {
494 eventBus.post(new GenericMessage(String.format("Trying to join %s on %s...", channel.name(), network.get().name())));
495 connectionEstablished.connection().joinChannel(channel.name());
496 } catch (IOException ioe1) {
497 logger.warn(String.format("Could not join %s on %s!", channel.name(), network.get().name()), ioe1);
504 * Remove all data stored for a network if the connection is closed.
506 * @param connectionClosed
507 * The connection closed event
510 public void connectionClosed(ConnectionClosed connectionClosed) {
511 removeConnection(connectionClosed.connection());
515 * Remove all data stored for a network if the connection fails.
517 * @param connectionFailed
518 * The connection failed event
521 public void connectionFailed(ConnectionFailed connectionFailed) {
522 removeConnection(connectionFailed.connection());
526 * Shows a message when a channel was joined by us.
528 * @param channelJoined
529 * The channel joined event
532 public void channelJoined(ChannelJoined channelJoined) {
533 if (channelJoined.connection().isSource(channelJoined.client())) {
534 Optional<Network> network = getNetwork(channelJoined.connection());
535 if (!network.isPresent()) {
539 Optional<Channel> channel = getChannel(network.get(), channelJoined.channel());
540 if (!channel.isPresent()) {
541 /* it’s an extra channel. */
542 extraChannels.add(new Channel(network.get(), channelJoined.channel()));
543 logger.info(String.format("Joined extra Channel %s on %s.", channelJoined.channel(), network.get().name()));
547 channelBanManager.unban(channel.get());
548 joinedChannels.add(channel.get());
549 logger.info(String.format("Joined Channel %s on %s.", channelJoined.channel(), network.get().name()));
554 public void channelNotJoined(ChannelNotJoined channelNotJoined) {
555 Optional<Network> network = getNetwork(channelNotJoined.connection());
556 if (!network.isPresent()) {
560 Optional<Channel> channel = getChannel(network.get(), channelNotJoined.channel());
561 if (!channel.isPresent()) {
562 eventBus.post(new GenericMessage(format("Could not join %s but didn’t try to join, either.", channel.get())));
566 if (channelNotJoined.reason() == registeredNicknamesOnly) {
567 channels.remove(channel.get());
568 eventBus.post(new GenericMessage(
569 format("Not trying to join %s anymore.", channel.get())));
572 if (channelNotJoined.reason() == banned) {
573 channelBanManager.ban(channel.get());
574 eventBus.post(new GenericMessage(
575 format("Banned from %s, suspending join for day.",
580 eventBus.post(new GenericMessage(
581 format("Could not join %s: %s", channelNotJoined.channel(),
582 channelNotJoined.reason())));
586 * Removes bots that leave a channel, or channels when it’s us that’s leaving.
589 * The channel left event
592 public void channelLeft(ChannelLeft channelLeft) {
593 Optional<Network> network = getNetwork(channelLeft.connection());
594 if (!network.isPresent()) {
598 Bot bot = networkBots.get(network.get(), channelLeft.client().nick().get());
600 /* maybe it was us? */
601 if (channelLeft.connection().isSource(channelLeft.client())) {
602 Optional<Channel> channel = getChannel(network.get(), channelLeft.channel());
603 if (!channel.isPresent()) {
604 /* maybe it was an extra channel? */
605 channel = getExtraChannel(network.get(), channelLeft.channel());
606 if (!channel.isPresent()) {
607 /* okay, whatever. */
611 extraChannels.remove(channel);
613 channels.remove(channel.get());
616 eventBus.post(new GenericMessage(String.format("Left Channel %s on %s.", channel.get().name(), channel.get().network().name())));
622 networkBots.remove(network.get(), channelLeft.client().nick().get());
626 public void kickedFromChannel(KickedFromChannel kickedFromChannel) {
627 Optional<Network> network = getNetwork(kickedFromChannel.connection());
628 if (!network.isPresent()) {
632 /* have we been kicked? */
633 if (nicknameMatchesConnection(kickedFromChannel.connection(), kickedFromChannel.kickee())) {
634 Optional<Channel> channel = getChannel(network.get(), kickedFromChannel.channel());
635 if (!channel.isPresent()) {
636 /* maybe it was an extra channel? */
637 channel = getExtraChannel(network.get(), kickedFromChannel.channel());
638 if (!channel.isPresent()) {
639 /* okay, whatever. */
643 extraChannels.remove(channel);
645 channels.remove(channel.get());
647 eventBus.post(new GenericMessage(format(
648 "Kicked from %s by %s: %s",
649 kickedFromChannel.channel(),
650 kickedFromChannel.kicker(),
651 kickedFromChannel.reason().or("<unknown>")
656 private boolean nicknameMatchesConnection(Connection connection, String nickname) {
657 return connection.nickname().equalsIgnoreCase(nickname);
661 * Removes a client (which may be a bot) from the table of known bots.
664 * The client quit event
667 public void clientQuit(ClientQuit clientQuit) {
668 Optional<Network> network = getNetwork(clientQuit.connection());
669 if (!network.isPresent()) {
673 networkBots.remove(network.get(), clientQuit.client().nick().get());
677 * If the nickname of a bit changes, remove it from the old name and store it
678 * under the new name.
680 * @param nicknameChanged
681 * The nickname changed event
684 public void nicknameChanged(NicknameChanged nicknameChanged) {
685 Optional<Network> network = getNetwork(nicknameChanged.connection());
686 if (!network.isPresent()) {
690 Bot bot = networkBots.remove(network.get(), nicknameChanged.client().nick().get());
695 networkBots.put(network.get(), nicknameChanged.newNickname(), bot);
699 * If a message on a channel is received, it is parsed for pack information
700 * with is then added to a bot.
702 * @param channelMessageReceived
703 * The channel message received event
706 public void channelMessageReceived(ChannelMessageReceived channelMessageReceived) {
707 String message = getDefaultInstance().clean(channelMessageReceived.message());
708 if (!message.startsWith("#")) {
709 /* most probably not a pack announcement. */
713 Optional<Network> network = getNetwork(channelMessageReceived.connection());
714 if (!network.isPresent()) {
715 /* message for unknown connection? */
719 /* parse pack information. */
720 Optional<Pack> pack = parsePack(message);
721 if (!pack.isPresent()) {
726 synchronized (networkBots) {
727 if (!networkBots.contains(network.get(), channelMessageReceived.source().nick().get())) {
728 bot = new Bot(network.get(), channelMessageReceived.source().nick().get());
729 networkBots.put(network.get(), channelMessageReceived.source().nick().get(), bot);
730 eventBus.post(new BotAdded(bot));
732 bot = networkBots.get(network.get(), channelMessageReceived.source().nick().get());
737 bot.addPack(pack.get());
738 logger.debug(String.format("Bot %s now has %d packs.", bot, bot.packs().size()));
742 * Forward all private messages to every console.
744 * @param privateMessageReceived
745 * The private message recevied event
748 public void privateMessageReceived(PrivateMessageReceived privateMessageReceived) {
749 eventBus.post(new MessageReceived(privateMessageReceived.source(), privateMessageReceived.message()));
753 * Sends a message to all console when a notice was received.
755 * @param privateNoticeReceived
756 * The notice received event
759 public void privateNoticeReceived(PrivateNoticeReceived privateNoticeReceived) {
760 Optional<Network> network = getNetwork(privateNoticeReceived.connection());
761 if (!network.isPresent()) {
765 eventBus.post(new GenericMessage(String.format("Notice from %s (%s): %s", privateNoticeReceived.source(), network.get(), privateNoticeReceived.text())));
769 * Starts a DCC download.
771 * @param dccSendReceived
775 public void dccSendReceived(final DccSendReceived dccSendReceived) {
776 final Optional<Network> network = getNetwork(dccSendReceived.connection());
777 if (!network.isPresent()) {
781 Collection<Download> packDownloads = downloads.get(dccSendReceived.filename());
782 if (packDownloads.isEmpty()) {
783 /* unknown download, ignore. */
787 /* check if it’s already downloading. */
788 Collection<Download> runningDownloads = FluentIterable.from(packDownloads).filter(FILTER_RUNNING).toSet();
789 if (!runningDownloads.isEmpty()) {
790 eventBus.post(new GenericMessage(String.format("Ignoring offer for %s, it’s already being downloaded.", dccSendReceived.filename())));
794 /* locate the correct download. */
795 Collection<Download> requestedDownload = FluentIterable.from(packDownloads).filter(new Predicate<Download>() {
798 public boolean apply(Download download) {
799 return download.bot().network().equals(network.get()) && download.bot().name().equalsIgnoreCase(dccSendReceived.source().nick().get());
803 /* we did not request this download. */
804 if (requestedDownload.isEmpty()) {
808 Download download = requestedDownload.iterator().next();
810 /* check if the file already exists. */
811 File outputFile = new File(temporaryDirectory, dccSendReceived.filename());
812 if (outputFile.exists()) {
813 long existingFileSize = outputFile.length();
815 /* file already complete? */
816 if ((dccSendReceived.filesize() > -1) && (existingFileSize >= dccSendReceived.filesize())) {
817 /* file is apparently already complete. just move it. */
818 if (outputFile.renameTo(new File(finalDirectory, download.pack().name()))) {
819 eventBus.post(new GenericMessage(String.format("File %s already downloaded.", download.pack().name())));
821 eventBus.post(new GenericMessage(String.format("File %s already downloaded but not moved to %s.", download.pack().name(), finalDirectory)));
824 /* remove download. */
825 downloads.removeAll(download.pack().name());
829 /* file not complete yet, DCC resume it. */
831 download.remoteAddress(dccSendReceived.inetAddress()).filesize(dccSendReceived.filesize());
832 dccSendReceived.connection().sendDccResume(dccSendReceived.source().nick().get(), dccSendReceived.filename(), dccSendReceived.port(), existingFileSize);
833 } catch (IOException ioe1) {
834 eventBus.post(new GenericError(String.format("Could not send DCC RESUME %s to %s (%s).", dccSendReceived.filename(), dccSendReceived.source().nick().get(), ioe1.getMessage())));
840 /* file does not exist, start the download. */
842 OutputStream fileOutputStream = new FileOutputStream(outputFile);
843 DccReceiver dccReceiver = new DccReceiver(eventBus, dccSendReceived.inetAddress(), dccSendReceived.port(), dccSendReceived.filename(), dccSendReceived.filesize(), fileOutputStream);
844 download.filename(outputFile.getPath()).outputStream(fileOutputStream).dccReceiver(dccReceiver);
845 dccReceivers.add(dccReceiver);
847 eventBus.post(new DownloadStarted(download));
848 } catch (FileNotFoundException fnfe1) {
849 eventBus.post(new GenericError(String.format("Could not start download of %s from %s (%s).", dccSendReceived.filename(), dccSendReceived.source().nick().get(), fnfe1.getMessage())));
854 public void dccAcceptReceived(final DccAcceptReceived dccAcceptReceived) {
855 final Optional<Network> network = getNetwork(dccAcceptReceived.connection());
856 if (!network.isPresent()) {
860 Collection<Download> packDownloads = downloads.get(dccAcceptReceived.filename());
861 if (packDownloads.isEmpty()) {
862 /* unknown download, ignore. */
866 /* check if it’s already downloading. */
867 Collection<Download> runningDownloads = FluentIterable.from(packDownloads).filter(FILTER_RUNNING).toSet();
868 if (!runningDownloads.isEmpty()) {
869 eventBus.post(new GenericMessage(String.format("Ignoring offer for %s, it’s already being downloaded.", dccAcceptReceived.filename())));
873 /* locate the correct download. */
874 Collection<Download> requestedDownload = FluentIterable.from(packDownloads).filter(new Predicate<Download>() {
877 public boolean apply(Download download) {
878 return download.bot().network().equals(network.get()) && download.bot().name().equalsIgnoreCase(dccAcceptReceived.source().nick().get());
882 /* we did not request this download. */
883 if (requestedDownload.isEmpty()) {
887 Download download = requestedDownload.iterator().next();
890 File outputFile = new File(temporaryDirectory, dccAcceptReceived.filename());
891 if (outputFile.length() != dccAcceptReceived.position()) {
892 eventBus.post(new GenericError(String.format("Download %s from %s does not start at the right position!")));
893 logger.warn(String.format("Download %s from %s: have %d bytes but wants to resume from %d!", dccAcceptReceived.filename(), dccAcceptReceived.source(), outputFile.length(), dccAcceptReceived.position()));
895 downloads.removeAll(download.pack().name());
898 OutputStream outputStream = new FileOutputStream(outputFile, true);
899 DccReceiver dccReceiver = new DccReceiver(eventBus, download.remoteAddress(), dccAcceptReceived.port(), dccAcceptReceived.filename(), dccAcceptReceived.position(), download.filesize(), outputStream);
900 download.filename(outputFile.getPath()).outputStream(outputStream).dccReceiver(dccReceiver);
901 dccReceivers.add(dccReceiver);
903 eventBus.post(new DownloadStarted(download));
904 } catch (FileNotFoundException fnfe1) {
909 * Closes the output stream of the download and moves the file to the final
912 * @param dccDownloadFinished
913 * The DCC download finished event
916 public void dccDownloadFinished(DccDownloadFinished dccDownloadFinished) {
918 /* locate the correct download. */
919 Collection<Download> requestedDownload = FluentIterable.from(downloads.get(dccDownloadFinished.dccReceiver().filename())).filter(FILTER_RUNNING).toSet();
920 if (requestedDownload.isEmpty()) {
921 /* this seems wrong. */
922 logger.warn("Download finished but could not be located.");
925 Download download = requestedDownload.iterator().next();
928 download.outputStream().close();
929 File file = new File(download.filename());
930 file.renameTo(new File(finalDirectory, download.pack().name()));
931 eventBus.post(new DownloadFinished(download));
932 dccReceivers.remove(dccDownloadFinished.dccReceiver());
933 downloads.removeAll(download.pack().name());
934 } catch (IOException ioe1) {
935 /* TODO - handle all the errors. */
936 logger.warn(String.format("Could not move file %s to directory %s.", download.filename(), finalDirectory), ioe1);
941 * Closes the output stream and notifies all listeners of the failure.
943 * @param dccDownloadFailed
944 * The DCC download failed event
947 public void dccDownloadFailed(DccDownloadFailed dccDownloadFailed) {
949 /* locate the correct download. */
950 Collection<Download> requestedDownload = FluentIterable.from(downloads.get(dccDownloadFailed.dccReceiver().filename())).filter(FILTER_RUNNING).toSet();
951 if (requestedDownload.isEmpty()) {
952 /* this seems wrong. */
953 logger.warn("Download finished but could not be located.");
956 Download download = requestedDownload.iterator().next();
959 Closeables.close(download.outputStream(), true);
960 eventBus.post(new DownloadFailed(download));
961 dccReceivers.remove(dccDownloadFailed.dccReceiver());
962 downloads.removeAll(download.pack().name());
963 } catch (IOException ioe1) {
964 /* swallow silently. */
969 public void replyReceived(ReplyReceived replyReceived) {
970 logger.trace(String.format("%s: %s", replyReceived.connection().hostname(), replyReceived.reply()));
978 * Returns the download of the given pack from the given bot.
981 * The pack being downloaded
983 * The bot the pack is being downloaded from
984 * @return The download, or {@link Optional#absent()} if the download could not
987 private Optional<Download> getDownload(Pack pack, Bot bot) {
988 if (!downloads.containsKey(pack.name())) {
989 return Optional.absent();
991 for (Download download : Lists.newArrayList(downloads.get(pack.name()))) {
992 if (download.bot().equals(bot)) {
993 return Optional.of(download);
996 return Optional.absent();
1000 * Searches all current connections for the given connection, returning the
1001 * associated network.
1004 * The connection to get the network for
1005 * @return The network belonging to the connection, or {@link
1006 * Optional#absent()}
1008 private Optional<Network> getNetwork(Connection connection) {
1009 for (Entry<Network, Connection> networkConnectionEntry : networkConnections.entrySet()) {
1010 if (networkConnectionEntry.getValue().equals(connection)) {
1011 return Optional.of(networkConnectionEntry.getKey());
1014 return Optional.absent();
1018 * Returns the configured channel for the given network and name.
1021 * The network the channel is located on
1022 * @param channelName
1023 * The name of the channel
1024 * @return The configured channel, or {@link Optional#absent()} if no
1025 * configured channel matching the given network and name was found
1027 public Optional<Channel> getChannel(Network network, String channelName) {
1028 for (Channel channel : channels) {
1029 if (channel.network().equals(network) && (channel.name().equalsIgnoreCase(channelName))) {
1030 return Optional.of(channel);
1033 return Optional.absent();
1037 * Returns the extra channel for the given network and name.
1040 * The network the channel is located on
1041 * @param channelName
1042 * The name of the channel
1043 * @return The extra channel, or {@link Optional#absent()} if no extra channel
1044 * matching the given network and name was found
1046 public Optional<Channel> getExtraChannel(Network network, String channelName) {
1047 for (Channel channel : extraChannels) {
1048 if (channel.network().equals(network) && (channel.name().equalsIgnoreCase(channelName))) {
1049 return Optional.of(channel);
1052 return Optional.absent();
1056 * Parses {@link Pack} information from the given message.
1059 * The message to parse pack information from
1060 * @return The parsed pack, or {@link Optional#absent()} if the message could
1061 * not be parsed into a pack
1063 private Optional<Pack> parsePack(String message) {
1064 int squareOpen = message.indexOf('[');
1065 int squareClose = message.indexOf(']', squareOpen);
1066 if ((squareOpen == -1) && (squareClose == -1)) {
1067 return Optional.absent();
1069 String packSize = message.substring(squareOpen + 1, squareClose);
1070 String packName = message.substring(message.lastIndexOf(' ') + 1);
1071 String packIndex = message.substring(0, message.indexOf(' ')).substring(1);
1072 return Optional.of(new Pack(packIndex, packSize, packName));