mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-06 19:00:16 +01:00
365 lines
18 KiB
Diff
365 lines
18 KiB
Diff
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 fb712b3c75068741ca4f69cddcb6c4a7dc1e81ea..72e4828940396b7b326ed64c3c06b785f949b08d 100644
|
|
--- a/build.gradle.kts
|
|
+++ b/build.gradle.kts
|
|
@@ -48,6 +48,11 @@ dependencies {
|
|
runtimeOnly("org.apache.maven.resolver:maven-resolver-transport-http:1.7.0")
|
|
|
|
implementation("net.fabricmc:mapping-io:0.3.0") // Paper - needed to read mappings for stacktrace deobfuscation
|
|
+ // Paper start - Use Velocity cipher
|
|
+ implementation("com.velocitypowered:velocity-native:1.1.0-SNAPSHOT") {
|
|
+ isTransitive = false
|
|
+ }
|
|
+ // Paper end
|
|
|
|
testImplementation("io.github.classgraph:classgraph:4.8.47") // Paper - mob goal test
|
|
testImplementation("junit:junit:4.13.1")
|
|
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 b62be99c57b0a5bba0dc29809557d4d247698b13..f4d4ad983baf24d889441541d5a84dc1f49ea4d4 100644
|
|
--- a/src/main/java/net/minecraft/network/CompressionDecoder.java
|
|
+++ b/src/main/java/net/minecraft/network/CompressionDecoder.java
|
|
@@ -12,13 +12,20 @@ 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 {
|
|
@@ -38,6 +45,8 @@ public class CompressionDecoder extends ByteToMessageDecoder {
|
|
}
|
|
}
|
|
|
|
+ // Paper start
|
|
+ if (this.inflater != null) {
|
|
byte[] bs = new byte[friendlyByteBuf.readableBytes()];
|
|
friendlyByteBuf.readBytes(bs);
|
|
this.inflater.setInput(bs);
|
|
@@ -45,10 +54,36 @@ public class CompressionDecoder extends ByteToMessageDecoder {
|
|
this.inflater.inflate(cs);
|
|
list.add(Unpooled.wrappedBuffer(cs));
|
|
this.inflater.reset();
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ 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
|
|
}
|
|
}
|
|
}
|
|
|
|
+ // Paper start
|
|
+ @Override
|
|
+ public void handlerRemoved0(ChannelHandlerContext ctx) throws Exception {
|
|
+ if (this.compressor != null) {
|
|
+ this.compressor.close();
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
public void setThreshold(int compressionThreshold, boolean rejectsBadPackets) {
|
|
this.threshold = compressionThreshold;
|
|
this.validateDecompressed = rejectsBadPackets;
|
|
diff --git a/src/main/java/net/minecraft/network/CompressionEncoder.java b/src/main/java/net/minecraft/network/CompressionEncoder.java
|
|
index 792883afe53d2b7989c25a81c2f9a639d5e21d20..c04379ca8a4db0f4de46ad2b3b3384310eebddf3 100644
|
|
--- a/src/main/java/net/minecraft/network/CompressionEncoder.java
|
|
+++ b/src/main/java/net/minecraft/network/CompressionEncoder.java
|
|
@@ -6,22 +6,37 @@ 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();
|
|
FriendlyByteBuf friendlyByteBuf = new FriendlyByteBuf(byteBuf2);
|
|
if (i < this.threshold) {
|
|
friendlyByteBuf.writeVarInt(0);
|
|
friendlyByteBuf.writeBytes(byteBuf);
|
|
} else {
|
|
+ // Paper start
|
|
+ if (this.deflater != null) {
|
|
byte[] bs = new byte[i];
|
|
byteBuf.readBytes(bs);
|
|
friendlyByteBuf.writeVarInt(bs.length);
|
|
@@ -34,10 +49,48 @@ public class CompressionEncoder extends MessageToByteEncoder<ByteBuf> {
|
|
}
|
|
|
|
this.deflater.reset();
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ friendlyByteBuf.writeVarInt(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 a1aafb037fd340dc93dd2afb758ffc7457d15f84..a7e7fe4be2784ff34f7f8d0b6c2f82d65de8c145 100644
|
|
--- a/src/main/java/net/minecraft/network/Connection.java
|
|
+++ b/src/main/java/net/minecraft/network/Connection.java
|
|
@@ -628,11 +628,28 @@ 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;
|
|
@@ -661,16 +678,17 @@ 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(-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
|
|
}
|
|
} else {
|
|
if (this.channel.pipeline().get("decompress") instanceof CompressionDecoder) {
|
|
diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
|
|
index f7aa0125e4724f1efddf28814f926289c1ae37d4..477aa83c3b342705a8a9b7ab41b2f77008e2e281 100644
|
|
--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
|
|
+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
|
|
@@ -104,6 +104,11 @@ 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) {
|
|
try {
|
|
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
index 45db764f4499ee71bef691d37b604f21da120fe7..d2dd8b802ecea7fd2efe5f07fcef65c26e1adfbc 100644
|
|
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
@@ -276,12 +276,14 @@ 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);
|
|
}
|