Cancel/handle plugin message events to/from client (#133)

* Cancel/handle plugin message events to/from client

* spacing

pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>mineverse.Aust1n46.chat</groupId>
     <artifactId>VentureChat</artifactId>
-    <version>3.4.5</version>
+    <version>3.7.2</version>
     <url>https://bitbucket.org/Aust1n46/venturechat/src/master</url>
     <scm>
         <url>https://bitbucket.org/Aust1n46/venturechat/src/master</url>
@@ -204,21 +204,21 @@
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-api</artifactId>
-            <version>1.13-SNAPSHOT</version>
+            <version>1.20-R0.1-SNAPSHOT</version>
             <type>jar</type>
             <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-api</artifactId>
-            <version>1.13-SNAPSHOT</version>
+            <version>1.20-R0.1-SNAPSHOT</version>
             <type>javadoc</type>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.19-R0.1-SNAPSHOT</version>
+            <version>1.20-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <dependency>

src/main/java/mineverse/Aust1n46/chat/MineverseChat.java

@@ -79,6 +79,17 @@ public class MineverseChat extends JavaPlugin implements PluginMessageListener {
 	private static Permission permission = null;
 	private static Chat chat = null;
 
+	// TODO: This won't be so poorly done in the 4.0.0 branch I promise...
+	public static boolean isConnectedToProxy() {
+		try {
+			final MineverseChat plugin = MineverseChat.getInstance();
+			return (plugin.getServer().spigot().getConfig().getBoolean("settings.bungeecord")
+					|| plugin.getServer().spigot().getPaperConfig().getBoolean("settings.velocity-support.enabled")
+					|| plugin.getServer().spigot().getPaperConfig().getBoolean("proxies.velocity.enabled"));
+		} catch (final NoSuchMethodError ignored) {} // Thrown if server isn't Paper.
+		return false;
+	}
+	
 	@Override
 	public void onEnable() {
 		ccInfo = new ChatChannelInfo();
@@ -126,9 +137,11 @@ public class MineverseChat extends JavaPlugin implements PluginMessageListener {
 		Bukkit.getConsoleSender().sendMessage(Format.FormatStringAll("&8[&eVentureChat&8]&e - Registering Listeners"));
 		Bukkit.getConsoleSender().sendMessage(Format.FormatStringAll("&8[&eVentureChat&8]&e - Attaching to Executors"));
 
-		Bukkit.getConsoleSender().sendMessage(Format.FormatStringAll("&8[&eVentureChat&8]&e - Establishing BungeeCord"));
-		Bukkit.getMessenger().registerOutgoingPluginChannel(this, PLUGIN_MESSAGING_CHANNEL);
-		Bukkit.getMessenger().registerIncomingPluginChannel(this, PLUGIN_MESSAGING_CHANNEL, this);
+		if (MineverseChat.isConnectedToProxy()) {
+			Bukkit.getConsoleSender().sendMessage(Format.FormatStringAll("&8[&eVentureChat&8]&e - Establishing BungeeCord"));
+			Bukkit.getMessenger().registerOutgoingPluginChannel(this, PLUGIN_MESSAGING_CHANNEL);
+			Bukkit.getMessenger().registerIncomingPluginChannel(this, PLUGIN_MESSAGING_CHANNEL, this);
+		}
 		
 		PluginManager pluginManager = getServer().getPluginManager();
 		if(pluginManager.isPluginEnabled("Towny")) {
@@ -363,6 +376,9 @@ public class MineverseChat extends JavaPlugin implements PluginMessageListener {
 
 	@Override
 	public void onPluginMessageReceived(String channel, Player player, byte[] inputStream) {
+		if (!MineverseChat.isConnectedToProxy()) {
+			return;
+		}
 		if(!channel.equals(PLUGIN_MESSAGING_CHANNEL)) {
 			return;
 		}
@@ -605,6 +621,15 @@ public class MineverseChat extends JavaPlugin implements PluginMessageListener {
 						sendPluginMessage(stream);
 						return;
 					}
+					if (p.getPlayer().hasPermission("venturechat.ignore.bypass")) {
+						out.writeUTF("Ignore");
+						out.writeUTF("Bypass");
+						out.writeUTF(server);
+						out.writeUTF(receiver);
+						out.writeUTF(sender.toString());
+						sendPluginMessage(stream);
+						return;
+					}
 					out.writeUTF("Ignore");
 					out.writeUTF("Echo");
 					out.writeUTF(server);
@@ -640,6 +665,12 @@ public class MineverseChat extends JavaPlugin implements PluginMessageListener {
 							.replace("{player}", receiverName));
 					synchronize(p, true);
 				}
+				if(identifier.equals("Bypass")) {
+					String receiver = msgin.readUTF();
+					UUID sender = UUID.fromString(msgin.readUTF());
+					MineverseChatPlayer p = MineverseChatAPI.getOnlineMineverseChatPlayer(sender);
+					p.getPlayer().sendMessage(LocalizedMessage.IGNORE_PLAYER_CANT.toString().replace("{player}", receiver));
+				}
 			}
 			if(subchannel.equals("Mute")) {
 				String identifier = msgin.readUTF();

src/main/java/mineverse/Aust1n46/chat/listeners/LoginListener.java

@@ -73,19 +73,14 @@ public class LoginListener implements Listener {
 			}
 		}
 
-		try {
-			if(plugin.getServer().spigot().getConfig().getBoolean("settings.bungeecord") || plugin.getServer().spigot().getPaperConfig().getBoolean("settings.velocity-support.enabled")) {
-				long delayInTicks = 20L;
-				final MineverseChatPlayer sync = mcp;
-				plugin.getServer().getScheduler().runTaskLaterAsynchronously(plugin, new Runnable() {
-					public void run() {
-						MineverseChat.synchronize(sync, false);
-					}
-				}, delayInTicks);
-			}
-		}
-		catch(NoSuchMethodError exception) { // Thrown if server isn't Paper.
-			// Do nothing
+		if (MineverseChat.isConnectedToProxy()) {
+			long delayInTicks = 20L;
+			final MineverseChatPlayer sync = mcp;
+			plugin.getServer().getScheduler().runTaskLaterAsynchronously(plugin, new Runnable() {
+				public void run() {
+					MineverseChat.synchronize(sync, false);
+				}
+			}, delayInTicks);
 		}
 	}
 }

src/main/java/mineverse/Aust1n46/chat/proxy/VentureChatBungee.java

@@ -105,6 +105,9 @@ public class VentureChatBungee extends Plugin implements Listener, VentureChatPr
 		if(!event.getTag().equals(VentureChatProxy.PLUGIN_MESSAGING_CHANNEL_STRING) && !event.getTag().contains("viaversion:")) {
 			return;
 		}
+		// Critical to prevent client from sending or receiving messages
+		event.setCancelled(true);
+
 		if(!(event.getSender() instanceof Server)) {
 			return;
 		}

src/main/java/mineverse/Aust1n46/chat/proxy/VentureChatProxy.java

@@ -205,6 +205,18 @@ public class VentureChatProxy {
 						source.sendPluginMessage(server, outstream.toByteArray());
 					}
 				}
+				if(identifier.equals("Bypass")) {
+					String server = in.readUTF();
+					String player = in.readUTF();
+					String sender = in.readUTF();
+					out.writeUTF("Ignore");
+					out.writeUTF("Bypass");
+					out.writeUTF(player);
+					out.writeUTF(sender);
+					if(!source.getServer(server).isEmpty()) {
+						source.sendPluginMessage(server, outstream.toByteArray());
+					}
+				}
 			}
 			if(subchannel.equals("Mute")) {
 				String identifier = in.readUTF();

src/main/java/mineverse/Aust1n46/chat/proxy/VentureChatVelocity.java

@@ -134,12 +134,14 @@ public class VentureChatVelocity implements VentureChatProxySource {
 		if(!channelIdentifierId.equals(VentureChatProxy.PLUGIN_MESSAGING_CHANNEL_STRING) && !channelIdentifierId.contains("viaversion:")) {
 			return;
 		}
+		// Critical to prevent client from sending or receiving messages
+		event.setResult(ForwardResult.handled());
+
 		if(!(event.getSource() instanceof ServerConnection)) {
 			return;
 		}
 		String serverName = ((ServerConnection) event.getSource()).getServerInfo().getName();
 		VentureChatProxy.onPluginMessage(event.getData(), serverName, this);
-		event.setResult(ForwardResult.handled());
 	}
 
 	@Override

src/main/java/mineverse/Aust1n46/chat/utilities/Format.java

@@ -190,8 +190,8 @@ public class Format {
 				if (ChatColor.stripColor(link).contains("https://"))
 					https = "s";
 				temp += convertToJsonColors(lastCode + link,
-						",\"underlined\":\"" + underlineURLs()
-								+ "\",\"clickEvent\":{\"action\":\"open_url\",\"value\":\"http" + https + "://"
+						",\"underlined\":" + underlineURLs()
+								+ ",\"clickEvent\":{\"action\":\"open_url\",\"value\":\"http" + https + "://"
 								+ ChatColor.stripColor(link.replace("http://", "").replace("https://", ""))
 								+ "\"},\"hoverEvent\":{\"action\":\"show_text\",\"value\":{\"text\":\"\",\"extra\":["
 								+ convertToJsonColors(lastCode + link) + "]}}")
@@ -343,15 +343,35 @@ public class Format {
 				underlined = false;
 			}
 			if (bold)
-				modifier += ",\"bold\":\"true\"";
+				if (VersionHandler.isAtLeast_1_20_4()) {
+					modifier += ",\"bold\":true";
+				} else {
+					modifier += ",\"bold\":\"true\"";
+				}
 			if (obfuscated)
-				modifier += ",\"obfuscated\":\"true\"";
+				if (VersionHandler.isAtLeast_1_20_4()) {
+					modifier += ",\"obfuscated\":true";
+				} else {
+					modifier += ",\"obfuscated\":\"true\"";
+				}
 			if (italic)
-				modifier += ",\"italic\":\"true\"";
+				if (VersionHandler.isAtLeast_1_20_4()) {
+					modifier += ",\"italic\":true";
+				} else {
+					modifier += ",\"italic\":\"true\"";
+				}
 			if (underlined)
-				modifier += ",\"underlined\":\"true\"";
+				if (VersionHandler.isAtLeast_1_20_4()) {
+					modifier += ",\"underlined\":true";
+				} else {
+					modifier += ",\"underlined\":\"true\"";
+				}
 			if (strikethrough)
-				modifier += ",\"strikethrough\":\"true\"";
+				if (VersionHandler.isAtLeast_1_20_4()) {
+					modifier += ",\"strikethrough\":true";
+				} else {
+					modifier += ",\"strikethrough\":\"true\"";
+				}
 			remaining = remaining.substring(colorLength);
 			colorLength = LEGACY_COLOR_CODE_LENGTH;
 			indexNextColor = remaining.indexOf(BUKKIT_COLOR_CODE_PREFIX);
@@ -448,16 +468,20 @@ public class Format {
 
 	public static PacketContainer createPacketPlayOutChat(String json) {
 		final PacketContainer container;
-		if (VersionHandler.isAbove_1_19()) {
+		if (VersionHandler.isAtLeast_1_20_4()) { // 1.20.4+
+			container = new PacketContainer(PacketType.Play.Server.SYSTEM_CHAT);
+			container.getChatComponents().write(0, WrappedChatComponent.fromJson(json));
+			container.getBooleans().write(0, false);
+		} else if (VersionHandler.isAbove_1_19()) { // 1.19.1 -> 1.20.3
 			container = new PacketContainer(PacketType.Play.Server.SYSTEM_CHAT);
 			container.getStrings().write(0, json);
 			container.getBooleans().write(0, false);
-		} else if (VersionHandler.isUnder_1_19()) {
+		} else if (VersionHandler.isUnder_1_19()) { // 1.7 -> 1.19
 			WrappedChatComponent component = WrappedChatComponent.fromJson(json);
 			container = new PacketContainer(PacketType.Play.Server.CHAT);
 			container.getModifier().writeDefaults();
 			container.getChatComponents().write(0, component);
-		} else {
+		} else { // 1.19
 			container = new PacketContainer(PacketType.Play.Server.SYSTEM_CHAT);
 			container.getStrings().write(0, json);
 			container.getIntegers().write(0, 1);
@@ -467,15 +491,19 @@ public class Format {
 
 	public static PacketContainer createPacketPlayOutChat(WrappedChatComponent component) {
 		final PacketContainer container;
-		if (VersionHandler.isAbove_1_19()) {
+		if (VersionHandler.isAtLeast_1_20_4()) { // 1.20.4+
+			container = new PacketContainer(PacketType.Play.Server.SYSTEM_CHAT);
+			container.getChatComponents().write(0, component);
+			container.getBooleans().write(0, false);
+		} else if (VersionHandler.isAbove_1_19()) { // 1.19.1 -> 1.20.3
 			container = new PacketContainer(PacketType.Play.Server.SYSTEM_CHAT);
 			container.getStrings().write(0, component.getJson());
 			container.getBooleans().write(0, false);
-		} else if (VersionHandler.isUnder_1_19()) {
+		} else if (VersionHandler.isUnder_1_19()) { // 1.7 -> 1.19
 			container = new PacketContainer(PacketType.Play.Server.CHAT);
 			container.getModifier().writeDefaults();
 			container.getChatComponents().write(0, component);
-		} else {
+		} else { // 1.19
 			container = new PacketContainer(PacketType.Play.Server.SYSTEM_CHAT);
 			container.getStrings().write(0, component.getJson());
 			container.getIntegers().write(0, 1);
@@ -783,8 +811,13 @@ public class Format {
 				.replace(")", "\\)").replace("|", "\\|").replace("+", "\\+").replace("*", "\\*");
 	}
 
-	public static boolean underlineURLs() {
-		return getInstance().getConfig().getBoolean("underlineurls", true);
+	public static String underlineURLs() {
+		final boolean configValue = getInstance().getConfig().getBoolean("underlineurls", true);
+		if (VersionHandler.isAtLeast_1_20_4()) {
+			return String.valueOf(configValue);
+		} else {
+			return "\"" + configValue + "\"";
+		}
 	}
 	
 	public static String parseTimeStringFromMillis(long millis) {

src/main/java/mineverse/Aust1n46/chat/versions/VersionHandler.java

@@ -7,6 +7,7 @@ public final class VersionHandler {
 	public static final MinecraftVersion SERVER_VERSION = MinecraftVersion.getCurrentVersion();
 	private static final MinecraftVersion MC1_19 = new MinecraftVersion(1, 19, 0);
 	private static final MinecraftVersion MC1_19_1 = new MinecraftVersion(1, 19, 1);
+	private static final MinecraftVersion MC1_20_4 = new MinecraftVersion(1, 20, 4);
 
 	private VersionHandler() {
 	}
@@ -74,4 +75,8 @@ public final class VersionHandler {
 	public static boolean isAbove_1_19() {
 		return SERVER_VERSION.isAtLeast(MC1_19_1);
 	}
+	
+	public static boolean isAtLeast_1_20_4() {
+		return SERVER_VERSION.isAtLeast(MC1_20_4);
+	}
 }