mirror of
https://github.com/PaperMC/Paper.git
synced 2024-09-11 22:48:21 +02:00
357 lines
19 KiB
Diff
357 lines
19 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrew Steinborn <git@steinborn.me>
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Date: Mon, 26 Jul 2021 02:15:17 -0400
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Subject: [PATCH] Use Velocity compression and cipher natives
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diff --git a/build.gradle.kts b/build.gradle.kts
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index f9056ee057a22a11288405cd42cd0ba4c9d120c3..bcfe59b6efb628ee1e7f9d60667360d4d885fb6a 100644
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--- a/build.gradle.kts
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+++ b/build.gradle.kts
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@@ -40,6 +40,11 @@ dependencies {
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runtimeOnly("org.xerial:sqlite-jdbc:3.42.0.1")
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runtimeOnly("com.mysql:mysql-connector-j:8.2.0")
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runtimeOnly("com.lmax:disruptor:3.4.4") // Paper
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+ // Paper start - Use Velocity cipher
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+ implementation("com.velocitypowered:velocity-native:3.1.2-SNAPSHOT") {
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+ isTransitive = false
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+ }
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+ // Paper end - Use Velocity cipher
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runtimeOnly("org.apache.maven:maven-resolver-provider:3.9.6")
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runtimeOnly("org.apache.maven.resolver:maven-resolver-connector-basic:1.9.18")
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diff --git a/src/main/java/net/minecraft/network/CipherDecoder.java b/src/main/java/net/minecraft/network/CipherDecoder.java
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index 778beb445eac5769b9e4e07b4d1294c50ae2602b..7b895b6a626da6297f07582e96d98ecfb6c8c951 100644
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--- a/src/main/java/net/minecraft/network/CipherDecoder.java
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+++ b/src/main/java/net/minecraft/network/CipherDecoder.java
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@@ -7,13 +7,29 @@ import java.util.List;
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import javax.crypto.Cipher;
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public class CipherDecoder extends MessageToMessageDecoder<ByteBuf> {
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- private final CipherBase cipher;
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+ private final com.velocitypowered.natives.encryption.VelocityCipher cipher; // Paper - Use Velocity cipher
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- public CipherDecoder(Cipher cipher) {
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- this.cipher = new CipherBase(cipher);
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+ public CipherDecoder(com.velocitypowered.natives.encryption.VelocityCipher cipher) { // Paper - Use Velocity cipher
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+ this.cipher = cipher; // Paper - Use Velocity cipher
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}
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protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
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- list.add(this.cipher.decipher(channelHandlerContext, byteBuf));
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+ // Paper start - Use Velocity cipher
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+ ByteBuf compatible = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), cipher, byteBuf);
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+ try {
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+ cipher.process(compatible);
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+ list.add(compatible);
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+ } catch (Exception e) {
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+ compatible.release(); // compatible will never be used if we throw an exception
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+ throw e;
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+ }
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+ // Paper end - Use Velocity cipher
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}
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+
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+ // Paper start - Use Velocity cipher
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+ @Override
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+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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+ cipher.close();
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+ }
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+ // Paper end - Use Velocity cipher
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}
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diff --git a/src/main/java/net/minecraft/network/CipherEncoder.java b/src/main/java/net/minecraft/network/CipherEncoder.java
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index 0f3d502a9680006bcdcd7d272240a2e5c3b46790..ffa1c48585fbbc1d30826d435043527f6183a3ee 100644
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--- a/src/main/java/net/minecraft/network/CipherEncoder.java
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+++ b/src/main/java/net/minecraft/network/CipherEncoder.java
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@@ -4,15 +4,32 @@ import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.MessageToByteEncoder;
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import javax.crypto.Cipher;
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+import java.util.List;
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-public class CipherEncoder extends MessageToByteEncoder<ByteBuf> {
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- private final CipherBase cipher;
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+public class CipherEncoder extends io.netty.handler.codec.MessageToMessageEncoder<ByteBuf> { // Paper - Use Velocity cipher; change superclass
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+ private final com.velocitypowered.natives.encryption.VelocityCipher cipher; // Paper - Use Velocity cipher
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- public CipherEncoder(Cipher cipher) {
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- this.cipher = new CipherBase(cipher);
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+ public CipherEncoder(com.velocitypowered.natives.encryption.VelocityCipher cipher) { // Paper - Use Velocity cipher
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+ this.cipher = cipher; // Paper - Use Velocity cipher
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}
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- protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, ByteBuf byteBuf2) throws Exception {
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- this.cipher.encipher(byteBuf, byteBuf2);
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+ protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
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+ // Paper start - Use Velocity cipher
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+ ByteBuf compatible = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), cipher, byteBuf);
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+ try {
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+ cipher.process(compatible);
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+ list.add(compatible);
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+ } catch (Exception e) {
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+ compatible.release(); // compatible will never be used if we throw an exception
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+ throw e;
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+ }
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+ // Paper end - Use Velocity cipher
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}
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+
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+ // Paper start - Use Velocity cipher
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+ @Override
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+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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+ cipher.close();
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+ }
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+ // Paper end - Use Velocity cipher
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}
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diff --git a/src/main/java/net/minecraft/network/CompressionDecoder.java b/src/main/java/net/minecraft/network/CompressionDecoder.java
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index 5927c928b27f64bd3973e95d5867b59f67476d41..76aeebe60ac321ed604661a0ec969bb25210643f 100644
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--- a/src/main/java/net/minecraft/network/CompressionDecoder.java
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+++ b/src/main/java/net/minecraft/network/CompressionDecoder.java
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@@ -13,13 +13,20 @@ public class CompressionDecoder extends ByteToMessageDecoder {
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public static final int MAXIMUM_COMPRESSED_LENGTH = 2097152;
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public static final int MAXIMUM_UNCOMPRESSED_LENGTH = 8388608;
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private final Inflater inflater;
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+ private final com.velocitypowered.natives.compression.VelocityCompressor compressor; // Paper - Use Velocity cipher
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private int threshold;
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private boolean validateDecompressed;
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+ // Paper start - Use Velocity cipher
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public CompressionDecoder(int compressionThreshold, boolean rejectsBadPackets) {
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+ this(null, compressionThreshold, rejectsBadPackets);
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+ }
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+ public CompressionDecoder(com.velocitypowered.natives.compression.VelocityCompressor compressor, int compressionThreshold, boolean rejectsBadPackets) {
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this.threshold = compressionThreshold;
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this.validateDecompressed = rejectsBadPackets;
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- this.inflater = new Inflater();
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+ this.inflater = compressor == null ? new Inflater() : null;
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+ this.compressor = compressor;
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+ // Paper end - Use Velocity cipher
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}
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protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
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@@ -38,14 +45,42 @@ public class CompressionDecoder extends ByteToMessageDecoder {
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}
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}
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+ if (inflater != null) { // Paper - Use Velocity cipher; fallback to vanilla inflater
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this.setupInflaterInput(byteBuf);
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ByteBuf byteBuf2 = this.inflate(channelHandlerContext, i);
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this.inflater.reset();
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list.add(byteBuf2);
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+ return; // Paper - Use Velocity cipher
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+ } // Paper - use velocity compression
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+
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+ // Paper start - Use Velocity cipher
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+ int claimedUncompressedSize = i; // OBFHELPER
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+ ByteBuf compatibleIn = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), this.compressor, byteBuf);
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+ ByteBuf uncompressed = com.velocitypowered.natives.util.MoreByteBufUtils.preferredBuffer(channelHandlerContext.alloc(), this.compressor, claimedUncompressedSize);
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+ try {
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+ this.compressor.inflate(compatibleIn, uncompressed, claimedUncompressedSize);
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+ list.add(uncompressed);
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+ byteBuf.clear();
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+ } catch (Exception e) {
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+ uncompressed.release();
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+ throw e;
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+ } finally {
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+ compatibleIn.release();
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+ }
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+ // Paper end - Use Velocity cipher
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}
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}
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}
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+ // Paper start - Use Velocity cipher
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+ @Override
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+ public void handlerRemoved0(ChannelHandlerContext ctx) throws Exception {
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+ if (this.compressor != null) {
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+ this.compressor.close();
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+ }
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+ }
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+ // Paper end - Use Velocity cipher
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+
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private void setupInflaterInput(ByteBuf buf) {
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ByteBuffer byteBuffer;
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if (buf.nioBufferCount() > 0) {
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diff --git a/src/main/java/net/minecraft/network/CompressionEncoder.java b/src/main/java/net/minecraft/network/CompressionEncoder.java
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index 11a466558c77b43969b8e4be3a3470f84c7fcb1a..ae6e8ab9c1afa31d808f1fce2654a8b95bee6c31 100644
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--- a/src/main/java/net/minecraft/network/CompressionEncoder.java
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+++ b/src/main/java/net/minecraft/network/CompressionEncoder.java
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@@ -6,21 +6,37 @@ import io.netty.handler.codec.MessageToByteEncoder;
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import java.util.zip.Deflater;
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public class CompressionEncoder extends MessageToByteEncoder<ByteBuf> {
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- private final byte[] encodeBuf = new byte[8192];
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+ @javax.annotation.Nullable private final byte[] encodeBuf; // Paper - Use Velocity cipher
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+ @javax.annotation.Nullable // Paper - Use Velocity cipher
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private final Deflater deflater;
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+ @javax.annotation.Nullable // Paper - Use Velocity cipher
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+ private final com.velocitypowered.natives.compression.VelocityCompressor compressor; // Paper - Use Velocity cipher
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private int threshold;
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+ // Paper start - Use Velocity cipher
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public CompressionEncoder(int compressionThreshold) {
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+ this(null, compressionThreshold);
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+ }
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+ public CompressionEncoder(@javax.annotation.Nullable com.velocitypowered.natives.compression.VelocityCompressor compressor, int compressionThreshold) {
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this.threshold = compressionThreshold;
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- this.deflater = new Deflater();
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+ if (compressor == null) {
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+ this.encodeBuf = new byte[8192];
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+ this.deflater = new Deflater();
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+ } else {
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+ this.encodeBuf = null;
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+ this.deflater = null;
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+ }
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+ this.compressor = compressor;
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+ // Paper end - Use Velocity cipher
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}
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- protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, ByteBuf byteBuf2) {
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+ protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, ByteBuf byteBuf2) throws Exception { // Paper - Use Velocity cipher
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int i = byteBuf.readableBytes();
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if (i < this.threshold) {
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VarInt.write(byteBuf2, 0);
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byteBuf2.writeBytes(byteBuf);
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} else {
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+ if (this.deflater != null) { // Paper - Use Velocity cipher
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byte[] bs = new byte[i];
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byteBuf.readBytes(bs);
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VarInt.write(byteBuf2, bs.length);
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@@ -33,6 +49,43 @@ public class CompressionEncoder extends MessageToByteEncoder<ByteBuf> {
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}
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this.deflater.reset();
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+ // Paper start - Use Velocity cipher
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+ return;
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+ }
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+
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+ VarInt.write(byteBuf2, i);
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+ ByteBuf compatibleIn = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), this.compressor, byteBuf);
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+ try {
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+ this.compressor.deflate(compatibleIn, byteBuf2);
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+ } finally {
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+ compatibleIn.release();
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+ }
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+ }
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+ }
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+
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+ @Override
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+ protected ByteBuf allocateBuffer(ChannelHandlerContext ctx, ByteBuf msg, boolean preferDirect) throws Exception{
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+ if (this.compressor != null) {
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+ // We allocate bytes to be compressed plus 1 byte. This covers two cases:
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+ //
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+ // - Compression
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+ // According to https://github.com/ebiggers/libdeflate/blob/master/libdeflate.h#L103,
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+ // if the data compresses well (and we do not have some pathological case) then the maximum
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+ // size the compressed size will ever be is the input size minus one.
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+ // - Uncompressed
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+ // This is fairly obvious - we will then have one more than the uncompressed size.
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+ int initialBufferSize = msg.readableBytes() + 1;
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+ return com.velocitypowered.natives.util.MoreByteBufUtils.preferredBuffer(ctx.alloc(), this.compressor, initialBufferSize);
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+ }
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+
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+ return super.allocateBuffer(ctx, msg, preferDirect);
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+ }
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+
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+ @Override
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+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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+ if (this.compressor != null) {
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+ this.compressor.close();
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+ // Paper end - Use Velocity cipher
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}
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}
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diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
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index 16eb94eb1f40485daef2713f740f6e0beeb1463f..fae2a57570a4007b67b9949b9b16504da36a9886 100644
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--- a/src/main/java/net/minecraft/network/Connection.java
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+++ b/src/main/java/net/minecraft/network/Connection.java
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@@ -735,11 +735,28 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
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return networkmanager;
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}
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- public void setEncryptionKey(Cipher decryptionCipher, Cipher encryptionCipher) {
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- this.encrypted = true;
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- this.channel.pipeline().addBefore("splitter", "decrypt", new CipherDecoder(decryptionCipher));
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- this.channel.pipeline().addBefore("prepender", "encrypt", new CipherEncoder(encryptionCipher));
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+ // Paper start - Use Velocity cipher
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+// public void setEncryptionKey(Cipher decryptionCipher, Cipher encryptionCipher) {
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+// this.encrypted = true;
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+// this.channel.pipeline().addBefore("splitter", "decrypt", new CipherDecoder(decryptionCipher));
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+// this.channel.pipeline().addBefore("prepender", "encrypt", new CipherEncoder(encryptionCipher));
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+// }
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+
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+ public void setupEncryption(javax.crypto.SecretKey key) throws net.minecraft.util.CryptException {
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+ if (!this.encrypted) {
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+ try {
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+ com.velocitypowered.natives.encryption.VelocityCipher decryption = com.velocitypowered.natives.util.Natives.cipher.get().forDecryption(key);
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+ com.velocitypowered.natives.encryption.VelocityCipher encryption = com.velocitypowered.natives.util.Natives.cipher.get().forEncryption(key);
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+
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+ this.encrypted = true;
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+ this.channel.pipeline().addBefore("splitter", "decrypt", new CipherDecoder(decryption));
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+ this.channel.pipeline().addBefore("prepender", "encrypt", new CipherEncoder(encryption));
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+ } catch (java.security.GeneralSecurityException e) {
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+ throw new net.minecraft.util.CryptException(e);
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+ }
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+ }
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}
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+ // Paper end - Use Velocity cipher
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public boolean isEncrypted() {
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return this.encrypted;
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@@ -772,16 +789,17 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
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public void setupCompression(int compressionThreshold, boolean rejectsBadPackets) {
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if (compressionThreshold >= 0) {
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+ com.velocitypowered.natives.compression.VelocityCompressor compressor = com.velocitypowered.natives.util.Natives.compress.get().create(io.papermc.paper.configuration.GlobalConfiguration.get().misc.compressionLevel.or(-1)); // Paper - Use Velocity cipher
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if (this.channel.pipeline().get("decompress") instanceof CompressionDecoder) {
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((CompressionDecoder) this.channel.pipeline().get("decompress")).setThreshold(compressionThreshold, rejectsBadPackets);
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} else {
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- this.channel.pipeline().addBefore("decoder", "decompress", new CompressionDecoder(compressionThreshold, rejectsBadPackets));
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+ this.channel.pipeline().addBefore("decoder", "decompress", new CompressionDecoder(compressor, compressionThreshold, rejectsBadPackets)); // Paper - Use Velocity cipher
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}
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if (this.channel.pipeline().get("compress") instanceof CompressionEncoder) {
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((CompressionEncoder) this.channel.pipeline().get("compress")).setThreshold(compressionThreshold);
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} else {
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- this.channel.pipeline().addBefore("encoder", "compress", new CompressionEncoder(compressionThreshold));
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+ this.channel.pipeline().addBefore("encoder", "compress", new CompressionEncoder(compressor, compressionThreshold)); // Paper - Use Velocity cipher
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}
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this.channel.pipeline().fireUserEventTriggered(io.papermc.paper.network.ConnectionEvent.COMPRESSION_THRESHOLD_SET); // Paper - Add Channel initialization listeners
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} else {
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diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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index a4a29a7ea0035ecf4c61ee8547a9eb24acb667d0..586521a2cbb1d4dcfb912029f65e4363ec7674a7 100644
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--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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@@ -106,6 +106,11 @@ public class ServerConnectionListener {
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ServerConnectionListener.LOGGER.info("Using default channel type");
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}
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+ // Paper start - Use Velocity cipher
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+ ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.compress.getLoadedVariant() + " compression from Velocity.");
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+ ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.cipher.getLoadedVariant() + " cipher from Velocity.");
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+ // Paper end - Use Velocity cipher
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+
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this.channels.add(((ServerBootstrap) ((ServerBootstrap) (new ServerBootstrap()).channel(oclass)).childHandler(new ChannelInitializer<Channel>() {
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protected void initChannel(Channel channel) {
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Connection.setInitialProtocolAttributes(channel);
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diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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index b8d8f14c30786321949901ca5184c43bee716355..c5fa9f4d28f9a7f64a50a902ee5e631bfc00119c 100644
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--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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@@ -235,12 +235,14 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
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}
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SecretKey secretkey = packet.getSecretKey(privatekey);
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- Cipher cipher = Crypt.getCipher(2, secretkey);
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- Cipher cipher1 = Crypt.getCipher(1, secretkey);
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+ // Paper start - Use Velocity cipher
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+// Cipher cipher = Crypt.getCipher(2, secretkey);
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+// Cipher cipher1 = Crypt.getCipher(1, secretkey);
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+ // Paper end - Use Velocity cipher
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s = (new BigInteger(Crypt.digestData("", this.server.getKeyPair().getPublic(), secretkey))).toString(16);
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this.state = ServerLoginPacketListenerImpl.State.AUTHENTICATING;
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- this.connection.setEncryptionKey(cipher, cipher1);
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+ this.connection.setupEncryption(secretkey); // Paper - Use Velocity cipher
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} catch (CryptException cryptographyexception) {
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throw new IllegalStateException("Protocol error", cryptographyexception);
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}
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