Adde1.9 protocols from ViaVersion to ViaBackwards (#580)

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

@@ -40,6 +40,11 @@ public interface ViaBackwardsConfig {
      */
     boolean isFix1_13FacePlayer();
 
+    /**
+     * Converts the 1.13 face look-at packet for 1.12- players. Requires a bit of extra caching.
+     *
+     * @return true if enabled
+     */
     boolean fix1_13FormattedInventoryTitle();
 
     /**
@@ -49,5 +54,11 @@ public interface ViaBackwardsConfig {
      */
     boolean alwaysShowOriginalMobName();
 
+    /**
+     * Sends inventory acknowledgement packets to act as a replacement for ping packets for sub 1.17 clients.
+     * This only takes effect for ids in the short range. Useful for anticheat compatibility.
+     *
+     * @return true if enabled
+     */
     boolean handlePingsAsInvAcknowledgements();
 }

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

@@ -52,12 +52,15 @@ import com.viaversion.viabackwards.protocol.protocol1_19_3to1_19_4.Protocol1_19_
 import com.viaversion.viabackwards.protocol.protocol1_19_4to1_20.Protocol1_19_4To1_20;
 import com.viaversion.viabackwards.protocol.protocol1_19to1_19_1.Protocol1_19To1_19_1;
 import com.viaversion.viabackwards.protocol.protocol1_20to1_20_2.Protocol1_20To1_20_2;
+import com.viaversion.viabackwards.protocol.protocol1_9_1_2to1_9_3_4.Protocol1_9_1_2To1_9_3_4;
 import com.viaversion.viabackwards.protocol.protocol1_9_4to1_10.Protocol1_9_4To1_10;
+import com.viaversion.viabackwards.protocol.protocol1_9to1_9_1.Protocol1_9To1_9_1;
 import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.api.protocol.ProtocolManager;
 import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
 import com.viaversion.viaversion.update.Version;
 import java.io.File;
+import java.util.Arrays;
 import java.util.logging.Logger;
 
 public interface ViaBackwardsPlatform {
@@ -86,6 +89,8 @@ public interface ViaBackwardsPlatform {
 
         getLogger().info("Registering protocols...");
         final ProtocolManager protocolManager = Via.getManager().getProtocolManager();
+        protocolManager.registerProtocol(new Protocol1_9To1_9_1(), ProtocolVersion.v1_9, ProtocolVersion.v1_9_1);
+        protocolManager.registerProtocol(new Protocol1_9_1_2To1_9_3_4(), Arrays.asList(ProtocolVersion.v1_9_1.getVersion(), ProtocolVersion.v1_9_2.getVersion()), ProtocolVersion.v1_9_3.getVersion());
         protocolManager.registerProtocol(new Protocol1_9_4To1_10(), ProtocolVersion.v1_9_3, ProtocolVersion.v1_10);
 
         protocolManager.registerProtocol(new Protocol1_10To1_11(), ProtocolVersion.v1_10, ProtocolVersion.v1_11);

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_10to1_11/packets/BlockItemPackets1_11.java

@@ -41,10 +41,11 @@ import com.viaversion.viaversion.libs.opennbt.tag.builtin.ListTag;
 import com.viaversion.viaversion.libs.opennbt.tag.builtin.StringTag;
 import com.viaversion.viaversion.libs.opennbt.tag.builtin.Tag;
 import com.viaversion.viaversion.protocols.protocol1_11to1_10.EntityIdRewriter;
-import com.viaversion.viaversion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_3_4Type;
+
 import java.util.Arrays;
 import java.util.Optional;
 

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_11_1to1_12/packets/BlockItemPackets1_12.java

@@ -33,11 +33,12 @@ import com.viaversion.viaversion.libs.opennbt.tag.builtin.LongArrayTag;
 import com.viaversion.viaversion.libs.opennbt.tag.builtin.Tag;
 import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.ClientboundPackets1_12;
 import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.ServerboundPackets1_12;
-import com.viaversion.viaversion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 import java.util.Iterator;
 import java.util.Map;
+
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_3_4Type;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public class BlockItemPackets1_12 extends LegacyBlockItemRewriter<ClientboundPackets1_12, ServerboundPackets1_9_3, Protocol1_11_1To1_12> {

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_12_2to1_13/packets/BlockItemPackets1_13.java

@@ -54,8 +54,8 @@ import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.Protocol1_13To1_
 import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.data.BlockIdData;
 import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.data.SpawnEggRewriter;
 import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.types.Chunk1_13Type;
-import com.viaversion.viaversion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_3_4Type;
 import com.viaversion.viaversion.util.Key;
 import java.util.ArrayList;
 import java.util.HashMap;

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_9_1_2to1_9_3_4/Protocol1_9_1_2To1_9_3_4.java

@@ -0,0 +1,120 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2023 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.protocol.protocol1_9_1_2to1_9_3_4;
+
+import com.viaversion.viabackwards.protocol.protocol1_9_1_2to1_9_3_4.chunks.BlockEntity;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.Position;
+import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
+import com.viaversion.viaversion.api.protocol.AbstractProtocol;
+import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.libs.opennbt.tag.builtin.CompoundTag;
+import com.viaversion.viaversion.libs.opennbt.tag.builtin.StringTag;
+import com.viaversion.viaversion.libs.opennbt.tag.builtin.Tag;
+import com.viaversion.viaversion.protocols.protocol1_9_1to1_9.types.Chunk1_9_1_2Type;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_3_4Type;
+import com.viaversion.viaversion.protocols.protocol1_9to1_8.ClientboundPackets1_9;
+import com.viaversion.viaversion.protocols.protocol1_9to1_8.ServerboundPackets1_9;
+
+public class Protocol1_9_1_2To1_9_3_4 extends AbstractProtocol<ClientboundPackets1_9_3, ClientboundPackets1_9, ServerboundPackets1_9_3, ServerboundPackets1_9> {
+
+    public Protocol1_9_1_2To1_9_3_4() {
+        super(ClientboundPackets1_9_3.class, ClientboundPackets1_9.class, ServerboundPackets1_9_3.class, ServerboundPackets1_9.class);
+    }
+
+    @Override
+    protected void registerPackets() {
+        registerClientbound(ClientboundPackets1_9_3.BLOCK_ENTITY_DATA, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.POSITION); //Position
+                map(Type.UNSIGNED_BYTE); //Type
+                map(Type.NBT); //NBT
+                handler(wrapper -> {
+                    if (wrapper.get(Type.UNSIGNED_BYTE, 0) == 9) {
+                        Position position = wrapper.get(Type.POSITION, 0);
+                        CompoundTag tag = wrapper.get(Type.NBT, 0);
+
+                        wrapper.clearPacket(); //Clear the packet
+
+                        wrapper.setPacketType(ClientboundPackets1_9.UPDATE_SIGN);
+                        wrapper.write(Type.POSITION, position); // Position
+                        for (int i = 1; i < 5; i++) {
+                            // Should technically be written as COMPONENT, but left as String for simplification/to remove redundant wrapping for VR
+                            Tag textTag = tag.get("Text" + i);
+                            String line = textTag instanceof StringTag ? ((StringTag) textTag).getValue() : "";
+                            wrapper.write(Type.STRING, line); // Sign line
+                        }
+                    }
+                });
+            }
+        });
+
+        registerClientbound(ClientboundPackets1_9_3.CHUNK_DATA, wrapper -> {
+            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+
+            Chunk1_9_3_4Type newType = new Chunk1_9_3_4Type(clientWorld);
+            Chunk1_9_1_2Type oldType = new Chunk1_9_1_2Type(clientWorld); // Get the old type to not write Block Entities
+
+            Chunk chunk = wrapper.read(newType);
+            wrapper.write(oldType, chunk);
+            BlockEntity.handle(chunk.getBlockEntities(), wrapper.user());
+        });
+
+        registerClientbound(ClientboundPackets1_9_3.JOIN_GAME, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.INT); // 0 - Entity ID
+                map(Type.UNSIGNED_BYTE); // 1 - Gamemode
+                map(Type.INT); // 2 - Dimension
+
+                handler(wrapper -> {
+                    ClientWorld clientChunks = wrapper.user().get(ClientWorld.class);
+
+                    int dimensionId = wrapper.get(Type.INT, 1);
+                    clientChunks.setEnvironment(dimensionId);
+                });
+            }
+        });
+
+        registerClientbound(ClientboundPackets1_9_3.RESPAWN, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.INT); // 0 - Dimension ID
+
+                handler(wrapper -> {
+                    ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+
+                    int dimensionId = wrapper.get(Type.INT, 0);
+                    clientWorld.setEnvironment(dimensionId);
+                });
+            }
+        });
+    }
+
+    @Override
+    public void init(UserConnection userConnection) {
+        if (!userConnection.has(ClientWorld.class)) {
+            userConnection.put(new ClientWorld(userConnection));
+        }
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_9_1_2to1_9_3_4/chunks/BlockEntity.java

@@ -0,0 +1,85 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2023 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.protocol.protocol1_9_1_2to1_9_3_4.chunks;
+
+import com.viaversion.viabackwards.protocol.protocol1_9_1_2to1_9_3_4.Protocol1_9_1_2To1_9_3_4;
+import com.viaversion.viaversion.api.Via;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.Position;
+import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.libs.opennbt.tag.builtin.CompoundTag;
+import com.viaversion.viaversion.libs.opennbt.tag.builtin.NumberTag;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class BlockEntity {
+    private static final Map<String, Integer> types = new HashMap<>();
+
+    static {
+        types.put("MobSpawner", 1);
+        types.put("Control", 2);
+        types.put("Beacon", 3);
+        types.put("Skull", 4);
+        types.put("FlowerPot", 5);
+        types.put("Banner", 6);
+        types.put("UNKNOWN", 7);
+        types.put("EndGateway", 8);
+        types.put("Sign", 9);
+    }
+
+    public static void handle(List<CompoundTag> tags, UserConnection connection) {
+        for (CompoundTag tag : tags) {
+            try {
+                if (!tag.contains("id"))
+                    throw new Exception("NBT tag not handled because the id key is missing");
+
+                String id = (String) tag.get("id").getValue();
+                if (!types.containsKey(id))
+                    throw new Exception("Not handled id: " + id);
+
+                int newId = types.get(id);
+                if (newId == -1)
+                    continue;
+
+                int x = ((NumberTag) tag.get("x")).asInt();
+                int y = ((NumberTag) tag.get("y")).asInt();
+                int z = ((NumberTag) tag.get("z")).asInt();
+
+                Position pos = new Position(x, (short) y, z);
+
+                updateBlockEntity(pos, (short) newId, tag, connection);
+            } catch (Exception e) {
+                if (Via.getManager().isDebug()) {
+                    Via.getPlatform().getLogger().warning("Block Entity: " + e.getMessage() + ": " + tag);
+                }
+            }
+        }
+    }
+
+    private static void updateBlockEntity(Position pos, short id, CompoundTag tag, UserConnection connection) throws Exception {
+        PacketWrapper wrapper = PacketWrapper.create(ClientboundPackets1_9_3.BLOCK_ENTITY_DATA, null, connection);
+        wrapper.write(Type.POSITION, pos);
+        wrapper.write(Type.UNSIGNED_BYTE, id);
+        wrapper.write(Type.NBT, tag);
+        wrapper.scheduleSend(Protocol1_9_1_2To1_9_3_4.class, false);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_9_4to1_10/packets/BlockItemPackets1_10.java

@@ -25,10 +25,10 @@ import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
 import com.viaversion.viaversion.api.minecraft.item.Item;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
 import com.viaversion.viaversion.api.type.Type;
-import com.viaversion.viaversion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_3_4Type;
 
 public class BlockItemPackets1_10 extends LegacyBlockItemRewriter<ClientboundPackets1_9_3, ServerboundPackets1_9_3, Protocol1_9_4To1_10> {
 

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_9to1_9_1/Protocol1_9To1_9_1.java

@@ -0,0 +1,64 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2023 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.protocol.protocol1_9to1_9_1;
+
+import com.viaversion.viaversion.api.protocol.AbstractProtocol;
+import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.protocols.protocol1_9to1_8.ClientboundPackets1_9;
+import com.viaversion.viaversion.protocols.protocol1_9to1_8.ServerboundPackets1_9;
+
+public class Protocol1_9To1_9_1 extends AbstractProtocol<ClientboundPackets1_9, ClientboundPackets1_9, ServerboundPackets1_9, ServerboundPackets1_9> {
+
+    public Protocol1_9To1_9_1() {
+        super(ClientboundPackets1_9.class, ClientboundPackets1_9.class, ServerboundPackets1_9.class, ServerboundPackets1_9.class);
+    }
+
+    @Override
+    protected void registerPackets() {
+        registerClientbound(ClientboundPackets1_9.JOIN_GAME, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.INT); // 0 - Player ID
+                map(Type.UNSIGNED_BYTE); // 1 - Player Gamemode
+                // 1.9.1 PRE 2 Changed this
+                map(Type.INT, Type.BYTE); // 2 - Player Dimension
+                map(Type.UNSIGNED_BYTE); // 3 - World Difficulty
+                map(Type.UNSIGNED_BYTE); // 4 - Max Players (Tab)
+                map(Type.STRING); // 5 - Level Type
+                map(Type.BOOLEAN); // 6 - Reduced Debug info
+            }
+        });
+
+        registerClientbound(ClientboundPackets1_9.SOUND, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.VAR_INT); // 0 - Sound ID
+
+                handler(wrapper -> {
+                    int sound = wrapper.get(Type.VAR_INT, 0);
+
+                    if (sound == 415) // Stop the Elytra sound for 1.9 (It's introduced in 1.9.2)
+                        wrapper.cancel();
+                    else if (sound >= 416) // Act like the Elytra sound never existed
+                        wrapper.set(Type.VAR_INT, 0, sound - 1);
+                });
+            }
+        });
+    }
+}