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https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-16 03:20:07 +01:00
Update to latest Netty
Dieser Commit ist enthalten in:
Ursprung
6fd3486dab
Commit
2bf8194e41
@ -1,4 +1,4 @@
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From 674cdb53ac5d08828c63aad1abd6b1a2f37fb9e6 Mon Sep 17 00:00:00 2001
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From 9894e4291db62707a35af91c43bd5016ad127786 Mon Sep 17 00:00:00 2001
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From: md_5 <md_5@live.com.au>
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Date: Tue, 23 Apr 2013 11:47:32 +1000
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Subject: [PATCH] Netty
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@ -32,7 +32,7 @@ Subject: [PATCH] Netty
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Commons Attribution-ShareAlike 3.0 Unported license.
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diff --git a/pom.xml b/pom.xml
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index 274fd43..b0891ff 100644
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index 274fd43..8d26718 100644
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--- a/pom.xml
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+++ b/pom.xml
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@@ -132,6 +132,11 @@
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@ -42,7 +42,7 @@ index 274fd43..b0891ff 100644
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+ <dependency>
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+ <groupId>io.netty</groupId>
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+ <artifactId>netty-all</artifactId>
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+ <version>4.0.0.CR1</version>
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+ <version>4.0.0.CR2</version>
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+ </dependency>
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</dependencies>
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@ -361,31 +361,26 @@ index 0000000..c8ea80a
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+ pending.add(conn);
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/netty/CipherCodec.java b/src/main/java/org/spigotmc/netty/CipherCodec.java
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diff --git a/src/main/java/org/spigotmc/netty/CipherBase.java b/src/main/java/org/spigotmc/netty/CipherBase.java
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new file mode 100644
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index 0000000..2dbbf6c
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index 0000000..1f915df
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/CipherCodec.java
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@@ -0,0 +1,67 @@
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+++ b/src/main/java/org/spigotmc/netty/CipherBase.java
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@@ -0,0 +1,45 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.buffer.ByteBuf;
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+import io.netty.channel.ChannelHandlerContext;
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+import io.netty.handler.codec.ByteToByteCodec;
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+import javax.crypto.Cipher;
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+import javax.crypto.ShortBufferException;
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+import net.minecraft.server.Packet252KeyResponse;
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+
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+/**
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+ * This class is a complete solution for encrypting and decoding bytes in a
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+ * Netty stream. It takes two {@link Cipher} instances, used for encryption and
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+ * decryption respectively.
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+ * Class to expose an
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+ * {@link #cipher(io.netty.buffer.ByteBuf, io.netty.buffer.ByteBuf)} method to
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+ * aid in the efficient passing of ByteBuffers through a cipher.
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+ */
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+public class CipherCodec extends ByteToByteCodec {
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+class CipherBase {
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+
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+ private Cipher encrypt;
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+ private Cipher decrypt;
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+ private Packet252KeyResponse responsePacket;
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+ private final Cipher cipher;
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+ private ThreadLocal<byte[]> heapInLocal = new EmptyByteThreadLocal();
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+ private ThreadLocal<byte[]> heapOutLocal = new EmptyByteThreadLocal();
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+
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@ -397,28 +392,11 @@ index 0000000..2dbbf6c
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+ }
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+ }
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+
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+ public CipherCodec(Cipher encrypt, Cipher decrypt, Packet252KeyResponse responsePacket) {
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+ this.encrypt = encrypt;
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+ this.decrypt = decrypt;
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+ this.responsePacket = responsePacket;
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+ protected CipherBase(Cipher cipher) {
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+ this.cipher = cipher;
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+ }
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+
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+ @Override
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+ public void beforeAdd(ChannelHandlerContext ctx) throws Exception {
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+ ctx.channel().write(responsePacket);
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+ }
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+
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+ @Override
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+ public void encode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) throws Exception {
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+ cipher(in, out, encrypt);
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+ }
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+
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+ @Override
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+ public void decode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) throws Exception {
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+ cipher(in, out, decrypt);
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+ }
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+
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+ private void cipher(ByteBuf in, ByteBuf out, Cipher cipher) throws ShortBufferException {
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+ protected void cipher(ByteBuf in, ByteBuf out) throws ShortBufferException {
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+ byte[] heapIn = heapInLocal.get();
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+ int readableBytes = in.readableBytes();
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+ if (heapIn.length < readableBytes) {
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@ -434,12 +412,64 @@ index 0000000..2dbbf6c
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+ out.writeBytes(heapOut, 0, cipher.update(heapIn, 0, readableBytes, heapOut));
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/netty/CipherDecoder.java b/src/main/java/org/spigotmc/netty/CipherDecoder.java
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new file mode 100644
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index 0000000..30b1d5f
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/CipherDecoder.java
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@@ -0,0 +1,20 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.buffer.ByteBuf;
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+import io.netty.channel.ChannelHandlerContext;
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+import io.netty.handler.codec.ByteToByteDecoder;
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+import javax.crypto.Cipher;
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+
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+class CipherDecoder extends ByteToByteDecoder {
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+
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+ private final CipherBase cipher;
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+
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+ public CipherDecoder(Cipher cipher) {
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+ this.cipher = new CipherBase(cipher);
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+ }
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+
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+ @Override
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+ protected void decode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) throws Exception {
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+ cipher.cipher(in, out);
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/netty/CipherEncoder.java b/src/main/java/org/spigotmc/netty/CipherEncoder.java
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new file mode 100644
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index 0000000..aa8192e
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/CipherEncoder.java
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@@ -0,0 +1,20 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.buffer.ByteBuf;
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+import io.netty.channel.ChannelHandlerContext;
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+import io.netty.handler.codec.ByteToByteEncoder;
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+import javax.crypto.Cipher;
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+
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+class CipherEncoder extends ByteToByteEncoder {
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+
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+ private final CipherBase cipher;
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+
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+ public CipherEncoder(Cipher cipher) {
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+ this.cipher = new CipherBase(cipher);
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+ }
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+
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+ @Override
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+ protected void encode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) throws Exception {
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+ cipher.cipher(in, out);
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/netty/NettyNetworkManager.java b/src/main/java/org/spigotmc/netty/NettyNetworkManager.java
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new file mode 100644
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index 0000000..5a0d041
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index 0000000..97bf65e
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/NettyNetworkManager.java
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@@ -0,0 +1,258 @@
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@@ -0,0 +1,254 @@
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+package org.spigotmc.netty;
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+
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+import com.google.common.util.concurrent.ThreadFactoryBuilder;
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@ -546,6 +576,8 @@ index 0000000..5a0d041
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+ if (connected) {
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+ if (msg instanceof Packet252KeyResponse) {
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+ secret = ((Packet252KeyResponse) msg).a(key);
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+ Cipher decrypt = NettyServerConnection.getCipher(Cipher.DECRYPT_MODE, secret);
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+ channel.pipeline().addBefore("decoder", "decrypt", new CipherDecoder(decrypt));
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+ }
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+
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+ if (msg.a_()) {
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@ -590,21 +622,15 @@ index 0000000..5a0d041
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+ // If handler indicates packet send
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+ if (packet != null) {
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+ highPriorityQueue.add(packet);
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+
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+
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+ if (packet instanceof Packet255KickDisconnect) {
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+ channel.pipeline().get(OutboundManager.class).flushNow = true;
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+ }
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+
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+ // If needed, check and prepare encryption phase
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+ // We don't send the packet here as it is sent just before the cipher handler has been added to ensure we can safeguard from any race conditions
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+ // Which are caused by the slow first initialization of the cipher SPI
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+ channel.write(packet);
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+ if (packet instanceof Packet252KeyResponse) {
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+ Cipher encrypt = NettyServerConnection.getCipher(Cipher.ENCRYPT_MODE, secret);
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+ Cipher decrypt = NettyServerConnection.getCipher(Cipher.DECRYPT_MODE, secret);
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+ CipherCodec codec = new CipherCodec(encrypt, decrypt, (Packet252KeyResponse) packet);
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+ channel.pipeline().addBefore("decoder", "cipher", codec);
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+ } else {
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+ channel.write(packet);
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+ channel.pipeline().addBefore("decoder", "encrypt", new CipherEncoder(encrypt));
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+ }
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+ }
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+ }
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@ -1066,14 +1092,15 @@ index 0000000..7476074
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+}
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diff --git a/src/main/java/org/spigotmc/netty/PacketDecoder.java b/src/main/java/org/spigotmc/netty/PacketDecoder.java
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new file mode 100644
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index 0000000..65074d2
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index 0000000..bc4fc98
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/PacketDecoder.java
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@@ -0,0 +1,64 @@
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@@ -0,0 +1,67 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.buffer.ByteBuf;
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+import io.netty.buffer.ByteBufInputStream;
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+import io.netty.buffer.MessageBuf;
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+import io.netty.channel.ChannelHandlerContext;
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+import io.netty.handler.codec.ReplayingDecoder;
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+import java.io.DataInputStream;
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@ -1097,49 +1124,51 @@ index 0000000..65074d2
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+ }
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+
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+ @Override
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+ public Packet decode(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
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+ protected void decode(ChannelHandlerContext ctx, ByteBuf in, MessageBuf<Object> out) throws Exception {
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+ if (input == null) {
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+ input = new DataInputStream(new ByteBufInputStream(in));
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+ }
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+
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+ switch (state()) {
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+ case HEADER:
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+ short packetId = in.readUnsignedByte();
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+ packet = Packet.a(MinecraftServer.getServer().getLogger(), packetId);
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+ if (packet == null) {
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+ throw new IOException("Bad packet id " + packetId);
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+ }
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+ checkpoint(ReadState.DATA);
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+ case DATA:
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+ try {
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+ packet.a(input);
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+ } catch (EOFException ex) {
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+ return null;
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+ }
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+ while (true) {
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+ switch (state()) {
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+ case HEADER:
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+ short packetId = in.readUnsignedByte();
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+ packet = Packet.a(MinecraftServer.getServer().getLogger(), packetId);
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+ if (packet == null) {
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+ throw new IOException("Bad packet id " + packetId);
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+ }
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+ checkpoint(ReadState.DATA);
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+ case DATA:
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+ try {
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+ packet.a(input);
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+ } catch (EOFException ex) {
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+ return;
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+ }
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+
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+ checkpoint(ReadState.HEADER);
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+ Packet ret = packet;
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+ packet = null;
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+ checkpoint(ReadState.HEADER);
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+ Packet ret = packet;
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+ packet = null;
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+
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+ return ret;
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+ default:
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+ throw new IllegalStateException();
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+ out.add(ret);
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+ break;
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+ default:
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+ throw new IllegalStateException();
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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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+ public void freeInboundBuffer(ChannelHandlerContext ctx) throws Exception {
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+ super.freeInboundBuffer(ctx);
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+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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+ input = null;
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+ packet = null;
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/netty/PacketEncoder.java b/src/main/java/org/spigotmc/netty/PacketEncoder.java
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new file mode 100644
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index 0000000..c8832d6
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index 0000000..b9a73b8
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/PacketEncoder.java
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@@ -0,0 +1,50 @@
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@@ -0,0 +1,49 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.buffer.ByteBuf;
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@ -1181,8 +1210,7 @@ index 0000000..c8832d6
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+ }
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+
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+ @Override
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+ public void freeOutboundBuffer(ChannelHandlerContext ctx) throws Exception {
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+ super.freeOutboundBuffer(ctx);
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+ public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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+ if (outBuf != null) {
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+ outBuf.release();
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+ outBuf = null;
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