initial commit

Author: Argon4W

gradle.properties

@@ -26,18 +26,18 @@ loader_version_range=[4,)
 
 # The unique mod identifier for the mod. Must be lowercase in English locale. Must fit the regex [a-z][a-z0-9_]{1,63}
 # Must match the String constant located in the main mod class annotated with @Mod.
-mod_id=examplemod
+mod_id=tmwya
 # The human-readable display name for the mod.
-mod_name=Example Mod
+mod_name=TellMeWhoYouAre
 # The license of the mod. Review your options at https://choosealicense.com/. All Rights Reserved is the default.
-mod_license=All Rights Reserved
+mod_license=MIT
 # The mod version. See https://semver.org/
 mod_version=1.0.0
 # The group ID for the mod. It is only important when publishing as an artifact to a Maven repository.
 # This should match the base package used for the mod sources.
 # See https://maven.apache.org/guides/mini/guide-naming-conventions.html
-mod_group_id=com.example.examplemod
+mod_group_id=com.github.argon4w.tmwya
 # The authors of the mod. This is a simple text string that is used for display purposes in the mod list.
-mod_authors=YourNameHere, OtherNameHere
+mod_authors=Argon4W
 # The description of the mod. This is a simple multiline text string that is used for display purposes in the mod list.
-mod_description=Example mod description.\nNewline characters can be used and will be replaced properly.
+mod_description=A Minecraft Mod that provides detailed information when a CustomPayloadPacket crashes the network.

src/main/java/com/example/examplemod/Config.java

@@ -0,0 +1,18 @@
+package com.github.argon4w.tmwya;
+
+import com.mojang.logging.LogUtils;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.fml.ModContainer;
+import net.neoforged.fml.common.Mod;
+import org.slf4j.Logger;
+
+@Mod(ExampleMod.MODID)
+public class ExampleMod {
+
+    public static final String MODID = "tmwya";
+    private static final Logger LOGGER = LogUtils.getLogger();
+
+    public ExampleMod(IEventBus modEventBus, ModContainer modContainer) {
+
+    }
+}

src/main/java/com/example/examplemod/ExampleMod.java

@@ -0,0 +1,24 @@
+package com.github.argon4w.tmwya.mixins;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import io.netty.buffer.ByteBuf;
+import net.minecraft.network.PacketDecoder;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.common.ClientboundCustomPayloadPacket;
+import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
+
+@Mixin(PacketDecoder.class)
+public class PacketDecoderMixin {
+    @ModifyArg(method = "decode", at = @At(value = "INVOKE", target = "Ljava/io/IOException;<init>(Ljava/lang/String;)V"))
+    public String provideDetailedMessageForCustomPayload(String message, @Local(index = 5, name = "packet") Packet<?> packet, @Local(index = 2, name = "in", argsOnly = true) ByteBuf in) {
+
+        if (packet instanceof ClientboundCustomPayloadPacket(CustomPacketPayload payload)) {
+            return "CustomPayloadPacket \"%s\" was larger than I expected, found %d bytes extra whilst reading packet.".formatted(payload.type().id(), in.readableBytes());
+        }
+
+        return message;
+    }
+}

src/main/java/com/github/argon4w/tmwya/ExampleMod.java

@@ -14,7 +14,7 @@ loaderVersion="${loader_version_range}" #mandatory
 license="${mod_license}"
 
 # A URL to refer people to when problems occur with this mod
-#issueTrackerURL="https://change.me.to.your.issue.tracker.example.invalid/" #optional
+issueTrackerURL="https://github.com/Argon4W/TMWYA/issues" #optional
 
 # A list of mods - how many allowed here is determined by the individual mod loader
 [[mods]] #mandatory
@@ -32,7 +32,7 @@ displayName="${mod_name}" #mandatory
 #updateJSONURL="https://change.me.example.invalid/updates.json" #optional
 
 # A URL for the "homepage" for this mod, displayed in the mod UI
-#displayURL="https://change.me.to.your.mods.homepage.example.invalid/" #optional
+displayURL="https://github.com/Argon4W/TMWYA" #optional
 
 # A file name (in the root of the mod JAR) containing a logo for display
 #logoFile="examplemod.png" #optional
@@ -47,8 +47,8 @@ authors="${mod_authors}" #optional
 description='''${mod_description}'''
 
 # The [[mixins]] block allows you to declare your mixin config to FML so that it gets loaded.
-#[[mixins]]
-#config="${mod_id}.mixins.json"
+[[mixins]]
+config="${mod_id}.mixins.json"
 
 # The [[accessTransformers]] block allows you to declare where your AT file is.
 # If this block is omitted, a fallback attempt will be made to load an AT from META-INF/accesstransformer.cfg

src/main/java/com/github/argon4w/tmwya/mixins/PacketDecoderMixin.java

@@ -0,0 +1,13 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "com.github.argon4w.tmwya.mixins",
+  "compatibilityLevel": "JAVA_21",
+  "refmap": "mixins.everyxhotpot.refmap.json",
+  "client": [
+    "PacketDecoderMixin"
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}