Adding automatic GamePhase detection.

This should solve the infamous UNKNOWN ORIGIN problem, especially in 
MCPC++.

ProtocolLib/src/main/java/com/comphenix/protocol/events/ListenerOptions.java

@@ -1,5 +1,7 @@
 package com.comphenix.protocol.events;
 
+import com.comphenix.protocol.injector.GamePhase;
+
 /**
  * Represents additional options a listener may require.
  * 
@@ -10,4 +12,10 @@ public enum ListenerOptions {
 	 * Retrieve the serialized client packet as it appears on the network stream.
 	 */
 	INTERCEPT_INPUT_BUFFER,
+	
+	/**
+	 * Disable the automatic game phase detection that will normally force {@link GamePhase#LOGIN} when
+	 * a packet ID is known to be transmitted during login.
+	 */
+	DISABLE_GAMEPHASE_DETECTION;
 }

ProtocolLib/src/main/java/com/comphenix/protocol/events/ListeningWhitelist.java

@@ -143,7 +143,7 @@ public class ListeningWhitelist {
 	public GamePhase getGamePhase() {
 		return gamePhase;
 	}
-
+	
 	/**
 	 * Retrieve every special option associated with this whitelist.
 	 * @return Every special option.

ProtocolLib/src/main/java/com/comphenix/protocol/injector/LoginPackets.java

@@ -0,0 +1,71 @@
+package com.comphenix.protocol.injector;
+
+import org.bukkit.Bukkit;
+
+import com.comphenix.protocol.Packets;
+import com.comphenix.protocol.concurrency.IntegerSet;
+import com.comphenix.protocol.events.ConnectionSide;
+import com.comphenix.protocol.utility.MinecraftVersion;
+
+/**
+ * Packets that are known to be transmitted during login. 
+ * <p>
+ * This may be dynamically extended later.
+ * @author Kristian
+ */
+class LoginPackets {
+	private IntegerSet clientSide = new IntegerSet(Packets.PACKET_COUNT);
+	private IntegerSet serverSide = new IntegerSet(Packets.PACKET_COUNT);
+	
+	public LoginPackets(MinecraftVersion version) {
+		// Ordinary login
+		clientSide.add(Packets.Client.HANDSHAKE);
+		serverSide.add(Packets.Server.KEY_REQUEST);
+		clientSide.add(Packets.Client.KEY_RESPONSE);
+		serverSide.add(Packets.Server.KEY_RESPONSE);
+		clientSide.add(Packets.Client.CLIENT_COMMAND);
+		serverSide.add(Packets.Server.LOGIN);
+		
+		// List ping
+		clientSide.add(Packets.Client.GET_INFO);
+		
+		// In 1.6.2, Minecraft started sending CUSTOM_PAYLOAD in the server list protocol
+		if (version.compareTo(MinecraftVersion.HORSE_UPDATE) >= 0) {
+			clientSide.add(Packets.Client.CUSTOM_PAYLOAD);
+		}
+		serverSide.add(Packets.Server.KICK_DISCONNECT);
+		
+		// MCPC++ contains Forge, which uses packet 250 during login
+		if (isMCPC()) {
+			clientSide.add(Packets.Client.CUSTOM_PAYLOAD);
+		}
+	}
+	
+	/**
+	 * Determine if we are runnign MCPC.
+	 * @return TRUE if we are, FALSE otherwise.
+	 */
+	private static boolean isMCPC() {
+		return Bukkit.getServer().getVersion().contains("MCPC-Plus");
+	}
+	
+	/**
+	 * Determine if a packet may be sent during login from a given direction.
+	 * @param packetId - the ID of the packet.
+	 * @param side - the direction.
+	 * @return TRUE if it may, FALSE otherwise.
+	 */
+	public boolean isLoginPacket(int packetId, ConnectionSide side) {
+		switch (side) {
+			case CLIENT_SIDE:
+				return clientSide.contains(packetId);
+			case SERVER_SIDE:
+				return serverSide.contains(packetId);
+			case BOTH:
+				return clientSide.contains(packetId) || 
+					   serverSide.contains(packetId);
+			default:
+				throw new IllegalArgumentException("Unknown connection side: " + side);
+		}
+	}	
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/PacketFilterManager.java

@@ -190,6 +190,9 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 	// The current Minecraft version
 	private MinecraftVersion minecraftVersion;
 	
+	// Login packets
+	private LoginPackets loginPackets;
+	
 	/**
 	 * Only create instances of this class if protocol lib is disabled.
 	 */
@@ -222,6 +225,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 		// The plugin verifier
 		this.pluginVerifier = new PluginVerifier(builder.getLibrary());
 		this.minecraftVersion = builder.getMinecraftVersion();
+		this.loginPackets = new LoginPackets(minecraftVersion);
 		
 		// The write packet interceptor
 		this.interceptWritePacket = new InterceptWritePacket(classLoader, reporter);
@@ -367,7 +371,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 				playerInjection.checkListener(listener);
 			}
 			if (hasSending)
-				incrementPhases(sending.getGamePhase());
+				incrementPhases(processPhase(sending, ConnectionSide.SERVER_SIDE));
 			
 			// Handle receivers after senders
 			if (hasReceiving) {
@@ -376,7 +380,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 				enablePacketFilters(listener, ConnectionSide.CLIENT_SIDE, receiving.getWhitelist());
 			}
 			if (hasReceiving)
-				incrementPhases(receiving.getGamePhase());
+				incrementPhases(processPhase(receiving, ConnectionSide.CLIENT_SIDE));
 			
 			// Inform our injected hooks
 			packetListeners.add(listener);
@@ -384,6 +388,20 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 		}
 	}
 	
+	private GamePhase processPhase(ListeningWhitelist whitelist, ConnectionSide side) {
+		// Determine if this is a login packet, ensuring that gamephase detection is enabled
+		if (!whitelist.getGamePhase().hasLogin() && 
+			!whitelist.getOptions().contains(ListenerOptions.DISABLE_GAMEPHASE_DETECTION)) {
+			
+			for (int id : whitelist.getWhitelist()) {
+				if (loginPackets.isLoginPacket(id, side)) {
+					return GamePhase.BOTH;
+				}
+			}
+		}
+		return whitelist.getGamePhase();
+	}
+	
 	/**
 	 * Invoked when we need to update the input buffer set.
 	 */
@@ -483,11 +501,11 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 		// Remove listeners and phases
 		if (sending != null && sending.isEnabled()) {
 			sendingRemoved = sendingListeners.removeListener(listener, sending);
-			decrementPhases(sending.getGamePhase());
+			decrementPhases(processPhase(sending, ConnectionSide.SERVER_SIDE));
 		}
 		if (receiving != null && receiving.isEnabled()) {
 			receivingRemoved = recievedListeners.removeListener(listener, receiving);
-			decrementPhases(receiving.getGamePhase());
+			decrementPhases(processPhase(receiving, ConnectionSide.CLIENT_SIDE));
 		}
 		
 		// Remove hooks, if needed
@@ -500,7 +518,6 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 	
 	@Override
 	public void removePacketListeners(Plugin plugin) {
-		
 		// Iterate through every packet listener
 		for (PacketListener listener : packetListeners) {			
 			// Remove the listener

ProtocolLib/src/main/java/com/comphenix/protocol/injector/packet/ProxyPacketInjector.java

@@ -32,7 +32,6 @@ import net.sf.cglib.proxy.Factory;
 import net.sf.cglib.proxy.CallbackFilter;
 import net.sf.cglib.proxy.NoOp;
 
-import com.comphenix.protocol.Packets;
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.error.Report;
 import com.comphenix.protocol.error.ReportType;
@@ -57,7 +56,7 @@ import com.comphenix.protocol.wrappers.WrappedIntHashMap;
  */
 class ProxyPacketInjector implements PacketInjector {
 	public static final ReportType REPORT_CANNOT_FIND_READ_PACKET_METHOD = new ReportType("Cannot find read packet method for ID %s.");
-	public static final ReportType REPORT_UNKNOWN_ORIGIN_FOR_PACKET = new ReportType("Unknown origin %s for packet %s. Are you using GamePhase.LOGIN?");
+	public static final ReportType REPORT_UNKNOWN_ORIGIN_FOR_PACKET = new ReportType("Timeout: Unknown origin %s for packet %s. Are you using GamePhase.LOGIN?");
 	
 	/**
 	 * Represents a way to update the packet ID to class lookup table.
@@ -327,9 +326,8 @@ class ProxyPacketInjector implements PacketInjector {
 			if (client != null) {
 				return packetRecieved(packet, client, buffered);
 			} else {
-				// Hack #2 - Caused by our server socket injector
-				if (packet.getID() != Packets.Client.GET_INFO)
-					reporter.reportWarning(this, Report.newBuilder(REPORT_UNKNOWN_ORIGIN_FOR_PACKET).messageParam(input, packet.getID()));
+				// The timeout elapsed!
+				reporter.reportWarning(this, Report.newBuilder(REPORT_UNKNOWN_ORIGIN_FOR_PACKET).messageParam(input, packet.getID()));
 				return null;
 			}
 			

ProtocolLib/src/main/java/com/comphenix/protocol/utility/MinecraftVersion.java

@@ -40,6 +40,26 @@ public class MinecraftVersion implements Comparable<MinecraftVersion> {
 	 */
 	private static final String VERSION_PATTERN = ".*\\(.*MC.\\s*([a-zA-z0-9\\-\\.]+)\\s*\\)";
 	
+	/**
+	 * Version 1.7.2 - the update that changed the world.
+	 */
+	public static final MinecraftVersion WORLD_UPDATE = new MinecraftVersion("1.7.2");
+	
+	/**
+	 * Version 1.6.1 - the horse update.
+	 */
+	public static final MinecraftVersion HORSE_UPDATE = new MinecraftVersion("1.6.1");
+	
+	/**
+	 * Version 1.5.0 - the redstone update.
+	 */
+	public static final MinecraftVersion REDSTONE_UPDATE = new MinecraftVersion("1.5.0");
+	
+	/**
+	 * Version 1.4.2 - the scary update (Wither Boss).
+	 */
+	public static final MinecraftVersion SCARY_UPDATE = new MinecraftVersion("1.4.2");
+	
 	private final int major;
 	private final int minor;
 	private final int build;