1.19.1-pre6

build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 
 allprojects {
     group = "com.viaversion"
-    version = "4.4.0-1.19.1-pre5-SNAPSHOT"
+    version = "4.4.0-1.19.1-pre6-SNAPSHOT"
     description = "Allow older clients to join newer server versions."
 }
 

bukkit/src/main/java/com/viaversion/viabackwards/BukkitPlugin.java

@@ -50,6 +50,11 @@ public class BukkitPlugin extends JavaPlugin implements ViaBackwardsPlatform {
     }
 
     private void onServerLoaded() {
+        if (isOutdatedPostLoad()) {
+            disable();
+            return;
+        }
+
         BukkitViaLoader loader = (BukkitViaLoader) Via.getManager().getLoader();
         int protocolVersion = Via.getAPI().getServerVersion().highestSupportedVersion();
         if (protocolVersion >= ProtocolVersion.v1_16.getVersion()) {

common/src/main/java/com/viaversion/viabackwards/api/ViaBackwardsPlatform.java

@@ -70,7 +70,10 @@ public interface ViaBackwardsPlatform {
 
         ViaBackwards.init(this, config);
 
-        if (isOutdated()) return;
+        if (isOutdated()) {
+            disable();
+            return;
+        }
 
         Via.getManager().getSubPlatforms().add(IMPL_VERSION);
 
@@ -133,11 +136,16 @@ public interface ViaBackwardsPlatform {
             getLogger().severe("LINK: https://ci.viaversion.com/");
             getLogger().severe("VIABACKWARDS WILL NOW DISABLE");
             getLogger().severe("================================");
-
-            disable();
             return true;
         }
+        return false;
+    }
 
+    default boolean isOutdatedPostLoad() {
+        if (!Via.getPlatform().isProxy() && Via.getAPI().getServerVersion().highestSupportedVersion() == ProtocolVersion.v1_19.getVersion()) {
+            // Print a warning but still allow it
+            getLogger().warning("This version of ViaBackwards does not fully support 1.19 servers. Please downgrade to ViaBackwards 4.3.1 for better support of that version.");
+        }
         return false;
     }
 

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_18_2to1_19_1/Protocol1_18_2To1_19_1.java

@@ -208,7 +208,7 @@ public final class Protocol1_18_2To1_19_1 extends BackwardsProtocol<ClientboundP
                     final PlayerMessageSignature signature = wrapper.read(Type.PLAYER_MESSAGE_SIGNATURE);
 
                     // Store message signature for last seen
-                    if (!signature.uuid().equals(ZERO_UUID)) {
+                    if (!signature.uuid().equals(ZERO_UUID) && signature.signatureBytes().length != 0) {
                         final ReceivedMessagesStorage messagesStorage = wrapper.user().get(ReceivedMessagesStorage.class);
                         messagesStorage.add(signature);
                         if (messagesStorage.tickUnacknowledged() > 64) {
@@ -223,7 +223,8 @@ public final class Protocol1_18_2To1_19_1 extends BackwardsProtocol<ClientboundP
                     }
 
                     // Send the unsigned message if present, otherwise the signed message
-                    JsonElement message = wrapper.read(Type.COMPONENT); // Plain message
+                    String plainMessage = wrapper.read(Type.STRING); // Plain message
+                    JsonElement message = null;
                     JsonElement decoratedMessage = wrapper.read(Type.OPTIONAL_COMPONENT);
                     if (decoratedMessage != null) {
                         message = decoratedMessage;
@@ -238,6 +239,11 @@ public final class Protocol1_18_2To1_19_1 extends BackwardsProtocol<ClientboundP
                     if (unsignedMessage != null) {
                         message = unsignedMessage;
                     }
+                    if (message == null) {
+                        // If no decorated or unsigned message is given, use the plain one
+                        message = GsonComponentSerializer.gson().serializeToTree(Component.text(plainMessage));
+                    }
+
                     wrapper.write(Type.COMPONENT, message);
 
                     final int chatTypeId = wrapper.read(Type.VAR_INT);
@@ -285,8 +291,6 @@ public final class Protocol1_18_2To1_19_1 extends BackwardsProtocol<ClientboundP
                     }
                     wrapper.write(Type.BOOLEAN, false); // No signed preview
 
-                    // Write last seen messages - even though we don't actually need to send them since everything will be unsigned,
-                    // we'll try and play nice with sending them anyway.
                     final ReceivedMessagesStorage messagesStorage = wrapper.user().get(ReceivedMessagesStorage.class);
                     messagesStorage.resetUnacknowledgedCount();
                     wrapper.write(Type.PLAYER_MESSAGE_SIGNATURE_ARRAY, messagesStorage.lastSignatures());

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_18_2to1_19_1/packets/EntityPackets1_19.java

@@ -231,11 +231,7 @@ public final class EntityPackets1_19 extends EntityRewriter<Protocol1_18_2To1_19
                             }
 
                             // Remove public profile signature
-                            if (wrapper.read(Type.BOOLEAN)) {
+                            wrapper.read(Type.OPTIONAL_PROFILE_KEY);
-                                wrapper.read(Type.LONG); // Timestamp
-                                wrapper.read(Type.BYTE_ARRAY_PRIMITIVE); // Key
-                                wrapper.read(Type.BYTE_ARRAY_PRIMITIVE); // Signature
-                            }
                         } else if (action == 1 || action == 2) { // Update gamemode/update latency
                             wrapper.passthrough(Type.VAR_INT);
                         } else if (action == 3) { // Update display name

common/src/main/resources/assets/viabackwards/data/translation-mappings.json

@@ -1,5 +1,5 @@
 {
-  "1.19": {
+  "1.19.1": {
     "selectWorld.loading_list": "Loading world list",
     "flat_world_preset.unknown": "???",
     "flat_world_preset.minecraft.classic_flat": "Classic Flat",

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ metadata.format.version = "1.1"
 [versions]
 
 # ViaVersion
-viaver = "4.4.0-1.19.1-pre5-SNAPSHOT"
+viaver = "4.4.0-1.19.1-pre6-SNAPSHOT"
 
 # Common provided
 netty = "4.0.20.Final"