Parse DCC SEND messages and send events for it.

[xudocci.git] / src / main / java / net / pterodactylus / irc / Connection.java

diff --git a/src/main/java/net/pterodactylus/irc/Connection.java b/src/main/java/net/pterodactylus/irc/Connection.java
index d127363..239f0a2 100644 (file)
--- a/src/main/java/net/pterodactylus/irc/Connection.java
+++ b/src/main/java/net/pterodactylus/irc/Connection.java
@@ -27,7 +27,9 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
+import java.net.InetAddress;
 import java.net.Socket;
+import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -44,6 +46,7 @@ import net.pterodactylus.irc.event.ChannelNotJoined.Reason;
 import net.pterodactylus.irc.event.ChannelTopic;
 import net.pterodactylus.irc.event.ConnectionEstablished;
 import net.pterodactylus.irc.event.ConnectionFailed;
+import net.pterodactylus.irc.event.DccSendReceived;
 import net.pterodactylus.irc.event.MotdReceived;
 import net.pterodactylus.irc.event.NicknameInUseReceived;
 import net.pterodactylus.irc.event.NoNicknameGivenReceived;
@@ -56,6 +59,8 @@ import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import com.google.common.eventbus.EventBus;
 import com.google.common.io.Closeables;
+import com.google.common.primitives.Ints;
+import com.google.common.primitives.Longs;
 import com.google.common.util.concurrent.AbstractExecutionThreadService;
 import com.google.common.util.concurrent.Service;
 
@@ -207,6 +212,21 @@ public class Connection extends AbstractExecutionThreadService implements Servic
                connectionHandler.sendCommand("JOIN", channel);
        }
 
+       /**
+        * Sends a message to the given recipient, which may be a channel or another
+        * nickname.
+        *
+        * @param recipient
+        *              The recipient of the message
+        * @param message
+        *              The message
+        * @throws IOException
+        *              if an I/O error occurs
+        */
+       public void sendMessage(String recipient, String message) throws IOException {
+               connectionHandler.sendCommand("PRIVMSG", recipient, message);
+       }
+
        //
        // ABSTRACTEXECUTIONTHREADSERVICE METHODS
        //
@@ -261,7 +281,23 @@ public class Connection extends AbstractExecutionThreadService implements Servic
                                if (command.equalsIgnoreCase("PRIVMSG")) {
                                        String recipient = parameters.get(0);
                                        String message = parameters.get(1);
-                                       if (!channelTypes.contains(recipient.charAt(0))) {
+                                       if (message.startsWith("\u0001") && message.endsWith("\u0001")) {
+                                               /* CTCP! */
+                                               String[] messageWords = message.substring(1, message.length() - 1).split(" +");
+                                               String ctcpCommand = messageWords[0];
+                                               if (ctcpCommand.equalsIgnoreCase("DCC")) {
+                                                       if (messageWords[1].equalsIgnoreCase("SEND")) {
+                                                               Optional<InetAddress> inetAddress = parseInetAddress(messageWords[3]);
+                                                               Optional<Integer> port = Optional.fromNullable(Ints.tryParse(messageWords[4]));
+                                                               long fileSize = Optional.fromNullable(Longs.tryParse(messageWords[5])).or(-1L);
+                                                               if (inetAddress.isPresent() && port.isPresent()) {
+                                                                       eventBus.post(new DccSendReceived(this, reply.source().get(), messageWords[2], inetAddress.get(), port.get(), fileSize));
+                                                               } else {
+                                                                       logger.warning(String.format("Received malformed DCC SEND: “%s”", message));
+                                                               }
+                                                       }
+                                               }
+                                       } else if (!channelTypes.contains(recipient.charAt(0))) {
                                                eventBus.post(new PrivateMessageReceived(this, reply.source().get(), message));
                                        } else {
                                                eventBus.post(new ChannelMessageReceived(this, recipient, reply.source().get(), message));
@@ -400,6 +436,32 @@ public class Connection extends AbstractExecutionThreadService implements Servic
                return Optional.absent();
        }
 
+       /**
+        * Parses the given {@code ip} and returns an {@link InetAddress} from it.
+        *
+        * @param ip
+        *              The IP to parse
+        * @return The parsed inet address, or {@link Optional#absent()} if no inet
+        *         address could be parsed
+        */
+       private Optional<InetAddress> parseInetAddress(String ip) {
+               Long ipNumber = Longs.tryParse(ip);
+               if (ipNumber == null) {
+                       return Optional.absent();
+               }
+
+               StringBuilder hostname = new StringBuilder(15);
+               hostname.append((ipNumber >>> 24) & 0xff).append('.');
+               hostname.append((ipNumber >>> 16) & 0xff).append('.');
+               hostname.append((ipNumber >>> 8) & 0xff).append('.');
+               hostname.append(ipNumber & 0xff);
+               try {
+                       return Optional.of(InetAddress.getByName(hostname.toString()));
+               } catch (UnknownHostException uhe1) {
+                       return Optional.absent();
+               }
+       }
+
        /** Handles input and output for the connection. */
        private class ConnectionHandler implements Closeable {