OpenSource/PaperMC
OpenSource/PaperMC
1
0
Fork 0
mirror of https://github.com/PaperMC/Paper.git synced 2024-12-28 23:38:25 +01:00
Code Issues Projects Releases Packages Wiki Activity

Add AntiXray layered obfuscation mode (#8799)

Browse source
This commit is contained in:
Drex 2023-02-09 18:38:00 +01:00
parent ab76bb014b
commit 905b16a361
2 changed files with 36 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
patches/server/Anti-Xray.patch
View file

@ -428,7 +428,31 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ bitStorageWriter.setBuffer(chunkPacketInfoAntiXray.getBuffer());
+ int numberOfBlocks = presetBlockStateBits.length;
+ // Keep the lambda expressions as simple as possible. They are used very frequently.
+ IntSupplier random = numberOfBlocks == 1 ? (() -> 0) : new IntSupplier() {
+ LayeredIntSupplier random = numberOfBlocks == 1 ? (() -> 0) : engineMode == EngineMode.OBFUSCATE_LAYER ? new LayeredIntSupplier() {
+ // engine-mode: 3
+ private int state;
+ private int next;
+
+ {
+ while ((state = ThreadLocalRandom.current().nextInt()) == 0) ;
+ }
+
+ @Override
+ public void nextLayer() {
+ // https://en.wikipedia.org/wiki/Xorshift
+ state ^= state << 13;
+ state ^= state >>> 17;
+ state ^= state << 5;
+ // https://www.pcg-random.org/posts/bounded-rands.html
+ next = (int) ((Integer.toUnsignedLong(state) * numberOfBlocks) >>> 32);
+ }
+
+ @Override
+ public int getAsInt() {
+ return next;
+ }
+ } : new LayeredIntSupplier() {
+ // engine-mode: 2
+ private int state;
+
+ {
@ -509,6 +533,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ current = next;
+ next = nextNext;
+ nextNext = temp;
+ random.nextLayer();
+ obfuscateLayer(y, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+
@ -534,6 +559,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ // There is nothing to read anymore
+ bitStorageReader.setBits(0);
+ solid[0] = true;
+ random.nextLayer();
+ obfuscateLayer(15, bitStorageReader, bitStorageWriter, solid, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+ } else {
@ -546,6 +572,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ current = next;
+ next = nextNext;
+ nextNext = temp;
+ random.nextLayer();
+ obfuscateLayer(15, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+
@ -838,6 +865,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ ((ServerLevel) level).getChunkSource().blockChanged(blockPos);
+ }
+ }
+
+ @FunctionalInterface
+ private interface LayeredIntSupplier extends IntSupplier {
+ default void nextLayer() {
+
+ }
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java
new file mode 100644

2
patches/server/Paper-config-files.patch
View file

@ -4013,7 +4013,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+
+public enum EngineMode {
+
+ HIDE(1, "hide ores"), OBFUSCATE(2, "obfuscate");
+ HIDE(1, "hide ores"), OBFUSCATE(2, "obfuscate"), OBFUSCATE_LAYER(3, "obfuscate layer");
+
+ public static final ScalarSerializer<EngineMode> SERIALIZER = new EngineModeSerializer();
+