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Paper/patches/server/0685-Use-Velocity-compression-and-cipher-natives.patch
Jake Potrebic de04cbced5
Updated Upstream (Bukkit/CraftBukkit) (#10034) 
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
f29cb801 Separate checkstyle-suppressions file is not required
86f99bbe SPIGOT-7540, PR-946: Add ServerTickManager API
d4119585 SPIGOT-6903, PR-945: Add BlockData#getMapColor
b7a2ed41 SPIGOT-7530, PR-947: Add Player#removeResourcePack
9dd56255 SPIGOT-7527, PR-944: Add WindCharge#explode()
994a6163 Attempt upgrade of resolver libraries

CraftBukkit Changes:
b3b43a6ad Add Checkstyle check for unused imports
13fb3358e SPIGOT-7544: Scoreboard#getEntries() doesn't get entries but class names
3dda99c06 SPIGOT-7540, PR-1312: Add ServerTickManager API
2ab4508c0 SPIGOT-6903, PR-1311: Add BlockData#getMapColor
1dbdbbed4 PR-1238: Remove unnecessary sign ticking
659728d2a MC-264285, SPIGOT-7439, PR-1237: Fix unbreakable flint and steel is completely consumed while igniting creeper
e37e29ce0 Increase outdated build delay
c00438b39 SPIGOT-7530, PR-1313: Add Player#removeResourcePack
492dd80ce SPIGOT-7527, PR-1310: Add WindCharge#explode()
e11fbb9d7 Upgrade MySQL driver
9f3a0bd2a Attempt upgrade of resolver libraries
60d16d7ca PR-1306: Centralize Bukkit and Minecraft entity conversion

Spigot Changes:
06d602e7 Rebuild patches
2023-12-16 18:09:28 -08:00

361 Zeilen
18 KiB
Diff
Originalformat Blame Verlauf

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Mon, 26 Jul 2021 02:15:17 -0400
Subject: [PATCH] Use Velocity compression and cipher natives
diff --git a/build.gradle.kts b/build.gradle.kts
index 3a3a6ce8833afca0caff2a3b92ad593bf75e951a..ed352bcf238199534720b17ab94401153eeeed1b 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -40,6 +40,11 @@ dependencies {
runtimeOnly("org.xerial:sqlite-jdbc:3.42.0.1")
runtimeOnly("com.mysql:mysql-connector-j:8.2.0")
runtimeOnly("com.lmax:disruptor:3.4.4") // Paper
+ // Paper start - Use Velocity cipher
+ implementation("com.velocitypowered:velocity-native:3.1.2-SNAPSHOT") {
+ isTransitive = false
+ }
+ // Paper end
runtimeOnly("org.apache.maven:maven-resolver-provider:3.9.6")
runtimeOnly("org.apache.maven.resolver:maven-resolver-connector-basic:1.9.18")
diff --git a/src/main/java/net/minecraft/network/CipherDecoder.java b/src/main/java/net/minecraft/network/CipherDecoder.java
index 778beb445eac5769b9e4e07b4d1294c50ae2602b..c712fb8193115e1ab71b5e40fb0ccb9413062b03 100644
--- a/src/main/java/net/minecraft/network/CipherDecoder.java
+++ b/src/main/java/net/minecraft/network/CipherDecoder.java
@@ -7,13 +7,29 @@ import java.util.List;
import javax.crypto.Cipher;
public class CipherDecoder extends MessageToMessageDecoder<ByteBuf> {
- private final CipherBase cipher;
+ private final com.velocitypowered.natives.encryption.VelocityCipher cipher; // Paper
- public CipherDecoder(Cipher cipher) {
- this.cipher = new CipherBase(cipher);
+ public CipherDecoder(com.velocitypowered.natives.encryption.VelocityCipher cipher) { // Paper
+ this.cipher = cipher; // Paper
}
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
- list.add(this.cipher.decipher(channelHandlerContext, byteBuf));
+ // Paper start
+ ByteBuf compatible = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), cipher, byteBuf);
+ try {
+ cipher.process(compatible);
+ list.add(compatible);
+ } catch (Exception e) {
+ compatible.release(); // compatible will never be used if we throw an exception
+ throw e;
+ }
+ // Paper end
}
+
+ // Paper start
+ @Override
+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
+ cipher.close();
+ }
+ // Paper end
}
diff --git a/src/main/java/net/minecraft/network/CipherEncoder.java b/src/main/java/net/minecraft/network/CipherEncoder.java
index 0f3d502a9680006bcdcd7d272240a2e5c3b46790..5dd7be70603e8754d2625bb9d16900cb01b9c730 100644
--- a/src/main/java/net/minecraft/network/CipherEncoder.java
+++ b/src/main/java/net/minecraft/network/CipherEncoder.java
@@ -4,15 +4,32 @@ import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
import javax.crypto.Cipher;
+import java.util.List;
-public class CipherEncoder extends MessageToByteEncoder<ByteBuf> {
- private final CipherBase cipher;
+public class CipherEncoder extends io.netty.handler.codec.MessageToMessageEncoder<ByteBuf> { // Paper - change superclass
+ private final com.velocitypowered.natives.encryption.VelocityCipher cipher; // Paper
- public CipherEncoder(Cipher cipher) {
- this.cipher = new CipherBase(cipher);
+ public CipherEncoder(com.velocitypowered.natives.encryption.VelocityCipher cipher) { // Paper
+ this.cipher = cipher; // Paper
}
- protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, ByteBuf byteBuf2) throws Exception {
- this.cipher.encipher(byteBuf, byteBuf2);
+ protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
+ // Paper start
+ ByteBuf compatible = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), cipher, byteBuf);
+ try {
+ cipher.process(compatible);
+ list.add(compatible);
+ } catch (Exception e) {
+ compatible.release(); // compatible will never be used if we throw an exception
+ throw e;
+ }
+ // Paper end
}
+
+ // Paper start
+ @Override
+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
+ cipher.close();
+ }
+ // Paper end
}
diff --git a/src/main/java/net/minecraft/network/CompressionDecoder.java b/src/main/java/net/minecraft/network/CompressionDecoder.java
index 2758c257cb4e2b0497bd9243c635f8fe3dbc414c..a0bab433d003de49bf55e71fd744ce47d6899182 100644
--- a/src/main/java/net/minecraft/network/CompressionDecoder.java
+++ b/src/main/java/net/minecraft/network/CompressionDecoder.java
@@ -13,13 +13,20 @@ public class CompressionDecoder extends ByteToMessageDecoder {
public static final int MAXIMUM_COMPRESSED_LENGTH = 2097152;
public static final int MAXIMUM_UNCOMPRESSED_LENGTH = 8388608;
private final Inflater inflater;
+ private final com.velocitypowered.natives.compression.VelocityCompressor compressor; // Paper
private int threshold;
private boolean validateDecompressed;
+ // Paper start
public CompressionDecoder(int compressionThreshold, boolean rejectsBadPackets) {
+ this(null, compressionThreshold, rejectsBadPackets);
+ }
+ public CompressionDecoder(com.velocitypowered.natives.compression.VelocityCompressor compressor, int compressionThreshold, boolean rejectsBadPackets) {
this.threshold = compressionThreshold;
this.validateDecompressed = rejectsBadPackets;
- this.inflater = new Inflater();
+ this.inflater = compressor == null ? new Inflater() : null;
+ this.compressor = compressor;
+ // Paper end
}
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
@@ -38,14 +45,42 @@ public class CompressionDecoder extends ByteToMessageDecoder {
}
}
+ if (inflater != null) { // Paper - use velocity compression - fallback to vanilla inflater
this.setupInflaterInput(byteBuf);
ByteBuf byteBuf2 = this.inflate(channelHandlerContext, i);
this.inflater.reset();
list.add(byteBuf2);
+ return; // Paper - use velocity compression
+ } // Paper - use velocity compression
+
+ // Paper start - use velocity compression
+ int claimedUncompressedSize = i; // OBFHELPER
+ ByteBuf compatibleIn = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), this.compressor, byteBuf);
+ ByteBuf uncompressed = com.velocitypowered.natives.util.MoreByteBufUtils.preferredBuffer(channelHandlerContext.alloc(), this.compressor, claimedUncompressedSize);
+ try {
+ this.compressor.inflate(compatibleIn, uncompressed, claimedUncompressedSize);
+ list.add(uncompressed);
+ byteBuf.clear();
+ } catch (Exception e) {
+ uncompressed.release();
+ throw e;
+ } finally {
+ compatibleIn.release();
+ }
+ // Paper end - use velocity compression
}
}
}
+ // Paper start
+ @Override
+ public void handlerRemoved0(ChannelHandlerContext ctx) throws Exception {
+ if (this.compressor != null) {
+ this.compressor.close();
+ }
+ }
+ // Paper end
+
private void setupInflaterInput(ByteBuf buf) {
ByteBuffer byteBuffer;
if (buf.nioBufferCount() > 0) {
diff --git a/src/main/java/net/minecraft/network/CompressionEncoder.java b/src/main/java/net/minecraft/network/CompressionEncoder.java
index 859af8c845bae9781a62fa4acae56c6e2d449e10..ec7239fd6a2ecf732d2843f9426e4cb69d166ce6 100644
--- a/src/main/java/net/minecraft/network/CompressionEncoder.java
+++ b/src/main/java/net/minecraft/network/CompressionEncoder.java
@@ -6,21 +6,36 @@ import io.netty.handler.codec.MessageToByteEncoder;
import java.util.zip.Deflater;
public class CompressionEncoder extends MessageToByteEncoder<ByteBuf> {
- private final byte[] encodeBuf = new byte[8192];
+ private final byte[] encodeBuf; // Paper
private final Deflater deflater;
+ private final com.velocitypowered.natives.compression.VelocityCompressor compressor; // Paper
private int threshold;
+ // Paper start
public CompressionEncoder(int compressionThreshold) {
+ this(null, compressionThreshold);
+ }
+ public CompressionEncoder(com.velocitypowered.natives.compression.VelocityCompressor compressor, int compressionThreshold) {
this.threshold = compressionThreshold;
- this.deflater = new Deflater();
+ if (compressor == null) {
+ this.encodeBuf = new byte[8192];
+ this.deflater = new Deflater();
+ } else {
+ this.encodeBuf = null;
+ this.deflater = null;
+ }
+ this.compressor = compressor;
+ // Paper end
}
- protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, ByteBuf byteBuf2) {
+ protected void encode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, ByteBuf byteBuf2) throws Exception { // Paper
int i = byteBuf.readableBytes();
if (i < this.threshold) {
VarInt.write(byteBuf2, 0);
byteBuf2.writeBytes(byteBuf);
} else {
+ // Paper start
+ if (this.deflater != null) {
byte[] bs = new byte[i];
byteBuf.readBytes(bs);
VarInt.write(byteBuf2, bs.length);
@@ -33,10 +48,48 @@ public class CompressionEncoder extends MessageToByteEncoder<ByteBuf> {
}
this.deflater.reset();
+ return;
+ }
+
+ VarInt.write(byteBuf2, i);
+ ByteBuf compatibleIn = com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible(channelHandlerContext.alloc(), this.compressor, byteBuf);
+ try {
+ this.compressor.deflate(compatibleIn, byteBuf2);
+ } finally {
+ compatibleIn.release();
+ }
+ // Paper end
}
}
+ // Paper start
+ @Override
+ protected ByteBuf allocateBuffer(ChannelHandlerContext ctx, ByteBuf msg, boolean preferDirect) throws Exception{
+ if (this.compressor != null) {
+ // We allocate bytes to be compressed plus 1 byte. This covers two cases:
+ //
+ // - Compression
+ // According to https://github.com/ebiggers/libdeflate/blob/master/libdeflate.h#L103,
+ // if the data compresses well (and we do not have some pathological case) then the maximum
+ // size the compressed size will ever be is the input size minus one.
+ // - Uncompressed
+ // This is fairly obvious - we will then have one more than the uncompressed size.
+ int initialBufferSize = msg.readableBytes() + 1;
+ return com.velocitypowered.natives.util.MoreByteBufUtils.preferredBuffer(ctx.alloc(), this.compressor, initialBufferSize);
+ }
+
+ return super.allocateBuffer(ctx, msg, preferDirect);
+ }
+
+ @Override
+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
+ if (this.compressor != null) {
+ this.compressor.close();
+ }
+ }
+ // Paper end
+
public int getThreshold() {
return this.threshold;
}
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
index 332a37dbd3ffa05614ae97b90453fcc242b6007d..fc32505422bebd52f5bcd6a6bb7525fa443ee8e0 100644
--- a/src/main/java/net/minecraft/network/Connection.java
+++ b/src/main/java/net/minecraft/network/Connection.java
@@ -669,11 +669,28 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
return networkmanager;
}
- public void setEncryptionKey(Cipher decryptionCipher, Cipher encryptionCipher) {
- this.encrypted = true;
- this.channel.pipeline().addBefore("splitter", "decrypt", new CipherDecoder(decryptionCipher));
- this.channel.pipeline().addBefore("prepender", "encrypt", new CipherEncoder(encryptionCipher));
+ // Paper start
+// public void setEncryptionKey(Cipher decryptionCipher, Cipher encryptionCipher) {
+// this.encrypted = true;
+// this.channel.pipeline().addBefore("splitter", "decrypt", new CipherDecoder(decryptionCipher));
+// this.channel.pipeline().addBefore("prepender", "encrypt", new CipherEncoder(encryptionCipher));
+// }
+
+ public void setupEncryption(javax.crypto.SecretKey key) throws net.minecraft.util.CryptException {
+ if (!this.encrypted) {
+ try {
+ com.velocitypowered.natives.encryption.VelocityCipher decryption = com.velocitypowered.natives.util.Natives.cipher.get().forDecryption(key);
+ com.velocitypowered.natives.encryption.VelocityCipher encryption = com.velocitypowered.natives.util.Natives.cipher.get().forEncryption(key);
+
+ this.encrypted = true;
+ this.channel.pipeline().addBefore("splitter", "decrypt", new CipherDecoder(decryption));
+ this.channel.pipeline().addBefore("prepender", "encrypt", new CipherEncoder(encryption));
+ } catch (java.security.GeneralSecurityException e) {
+ throw new net.minecraft.util.CryptException(e);
+ }
+ }
}
+ // Paper end
public boolean isEncrypted() {
return this.encrypted;
@@ -706,16 +723,17 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
public void setupCompression(int compressionThreshold, boolean rejectsBadPackets) {
if (compressionThreshold >= 0) {
+ 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
if (this.channel.pipeline().get("decompress") instanceof CompressionDecoder) {
((CompressionDecoder) this.channel.pipeline().get("decompress")).setThreshold(compressionThreshold, rejectsBadPackets);
} else {
- this.channel.pipeline().addBefore("decoder", "decompress", new CompressionDecoder(compressionThreshold, rejectsBadPackets));
+ this.channel.pipeline().addBefore("decoder", "decompress", new CompressionDecoder(compressor, compressionThreshold, rejectsBadPackets)); // Paper
}
if (this.channel.pipeline().get("compress") instanceof CompressionEncoder) {
((CompressionEncoder) this.channel.pipeline().get("compress")).setThreshold(compressionThreshold);
} else {
- this.channel.pipeline().addBefore("encoder", "compress", new CompressionEncoder(compressionThreshold));
+ this.channel.pipeline().addBefore("encoder", "compress", new CompressionEncoder(compressor, compressionThreshold)); // Paper
}
this.channel.pipeline().fireUserEventTriggered(io.papermc.paper.network.ConnectionEvent.COMPRESSION_THRESHOLD_SET); // Paper
} else {
diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
index 5f625acf04ddb56e3596d086252f9bfccfdb95f2..54c7f34ba3dc8466223e589702d0c93af8cf52a0 100644
--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
@@ -106,6 +106,11 @@ public class ServerConnectionListener {
ServerConnectionListener.LOGGER.info("Using default channel type");
}
+ // Paper start - indicate Velocity natives in use
+ ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.compress.getLoadedVariant() + " compression from Velocity.");
+ ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.cipher.getLoadedVariant() + " cipher from Velocity.");
+ // Paper end
+
this.channels.add(((ServerBootstrap) ((ServerBootstrap) (new ServerBootstrap()).channel(oclass)).childHandler(new ChannelInitializer<Channel>() {
protected void initChannel(Channel channel) {
Connection.setInitialProtocolAttributes(channel);
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 833e17796a75c24eb4f2eb76ed00160229458e39..0c4fb4a7d4fcdc6d724beb13a16bd729a3c525cd 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -218,12 +218,14 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
}
SecretKey secretkey = packet.getSecretKey(privatekey);
- Cipher cipher = Crypt.getCipher(2, secretkey);
- Cipher cipher1 = Crypt.getCipher(1, secretkey);
+ // Paper start
+// Cipher cipher = Crypt.getCipher(2, secretkey);
+// Cipher cipher1 = Crypt.getCipher(1, secretkey);
+ // Paper end
s = (new BigInteger(Crypt.digestData("", this.server.getKeyPair().getPublic(), secretkey))).toString(16);
this.state = ServerLoginPacketListenerImpl.State.AUTHENTICATING;
- this.connection.setEncryptionKey(cipher, cipher1);
+ this.connection.setupEncryption(secretkey); // Paper
} catch (CryptException cryptographyexception) {
throw new IllegalStateException("Protocol error", cryptographyexception);
}
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