Fix String too big

Author: tonimatasdev

common/src/main/java/dev/tonimatas/packetfixer/mixins/FriendlyByteBufMixin.java

@@ -32,4 +32,14 @@ private long newSize(long value) {
     private String readLong$size(String constant) {
         return "VarInt too big. Packet Fixer configured to " + Config.getVarLong() + ". You can modify it in the Packet Fixer config.";
     }
+
+    @ModifyConstant(method = "readUtf()Ljava/lang/String;", constant = @Constant(intValue = 32767))
+    private int readUtf$size(int value) {
+        return Config.getStringSize();
+    }
+
+    @ModifyConstant(method = "writeUtf(Ljava/lang/String;)Lnet/minecraft/network/FriendlyByteBuf;", constant = @Constant(intValue = 32767))
+    private int writeUtf$size(int value) {
+        return Config.getStringSize();
+    }
 }

common/src/main/java/dev/tonimatas/packetfixer/util/Config.java

@@ -30,6 +30,7 @@ public static void runProperties() {
                 properties.setProperty("varInt21", Integer.toString(3));
                 properties.setProperty("varInt", Integer.toString(5));
                 properties.setProperty("varLong", Integer.toString(10));
+                properties.setProperty("stringSize", Integer.toString(32767));
                 checkVariable("chunkPacketData", Integer.toString(2097152));
                 properties.setProperty("timeout", Integer.toString(90));
 
@@ -45,6 +46,7 @@ public static void runProperties() {
             checkVariable("varInt21", Integer.toString(3));
             checkVariable("varInt", Integer.toString(5));
             checkVariable("varLong", Integer.toString(10));
+            checkVariable("stringSize", Integer.toString(32767));
             checkVariable("chunkPacketData", Integer.toString(2097152));
             checkVariable("timeout", Integer.toString(90));
             save(propertiesFile);
@@ -88,6 +90,11 @@ public static int getVarLong() {
         return getUnlimitedPacketSize() ? (Integer.MAX_VALUE / 2 - 1) : Integer.parseInt(properties.getProperty("varLong"));
     }
 
+    public static int getStringSize() {
+        if (properties == null) runProperties();
+        return getUnlimitedPacketSize() ? Integer.MAX_VALUE : Integer.parseInt(properties.getProperty("stringSize"));
+    }
+    
     public static int getChunkPacketData() {
         if (properties == null) runProperties();
         return getUnlimitedPacketSize() ? Integer.MAX_VALUE : Integer.parseInt(properties.getProperty("chunkPacketData"));