Update

neko-craft · Sep 5, 2021 · a035d60 · a035d60
1 parent 97eedec
commit a035d60
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -7,6 +7,7 @@
 - Allow StoneCutter to hurt player.
 - Allow Shulkers spawn in end cities.
 - Allow player to leash villagers.
+- Send fake permission level 4 packet to player.
 - Add `/mspt <ms>` command to modify tps.
 - Modify server mod name.
 
@@ -32,6 +33,7 @@ java -javaagent:NekoAgent-1.0-SNAPSHOT.jar=enableStoneCutterDamage+enableShulker
 - enableShulkerSpawningInEndCities
 - enableLeashableViallagers
 - enableSetMSPTCommand
+- enableFakeLevel4Permission
 - maxShulkersCount=4
 - minShulkersCount=1
 

diff --git a/src/main/java/cn/apisium/nekoagent/Main.java b/src/main/java/cn/apisium/nekoagent/Main.java
@@ -16,7 +16,8 @@
 
 public final class Main {
     private static boolean enableSandDuplication, disableObsidianSpikesReset, enableStoneCutterDamage,
-            enableShulkerSpawningInEndCities, enableSetMSPTCommand, enableLeashableViallagers;
+            enableShulkerSpawningInEndCities, enableSetMSPTCommand, enableLeashableViallagers,
+            enableFakePermissionLevel4;
     private static String serverName;
     private static int maxShulkersCount = 4, minShulkersCount = 1;
     private final static ClassPool pool = ClassPool.getDefault();
@@ -29,6 +30,7 @@ public static void premain(final String agentArgs, final Instrumentation inst) {
             if (agentArgs.contains("enableSetMSPTCommand")) enableSetMSPTCommand = true;
             if (agentArgs.contains("enableShulkerSpawningInEndCities")) enableShulkerSpawningInEndCities = true;
             if (agentArgs.contains("enableLeashableViallagers")) enableLeashableViallagers = true;
+            if (agentArgs.contains("enableFakeLevel4Permission")) enableFakePermissionLevel4 = true;
             Matcher matcher = Pattern.compile("maxShulkersCount=(\\d+)").matcher(agentArgs);
             if (matcher.find()) maxShulkersCount = Integer.parseInt(matcher.group(1));
             matcher = Pattern.compile("minShulkersCount=(\\d+)").matcher(agentArgs);
@@ -89,6 +91,15 @@ public byte[] transform(final ClassLoader loader, String className, final Class<
             className = className.replace('/', '.');
             final CtClass clazz;
             switch (className) {
+                case "net.minecraft.network.protocol.game.PacketPlayOutEntityStatus":
+                    if (!enableFakePermissionLevel4) return null;
+                    try {
+                        pool.insertClassPath(new LoaderClassPath(loader));
+                        clazz = pool.get(className);
+                        clazz.getConstructor(buildDesc(null, "net.minecraft.world.entity.Entity", "B"))
+                                .insertBefore("{ if ($2 > 23 && $2 < 28) $2 = 28; }");
+                        break;
+                    } catch (Throwable e) { throw new RuntimeException(e); }
                 case "net.minecraft.world.entity.Entity":
                     if (!enableSandDuplication) return null;
                     try {