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Added buffer length check in DynamicChunk#readChunk

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This commit is contained in:
themode 2020-10-23 23:55:42 +02:00
parent d2eff4abbc
commit 70e047e6ee
2 changed files with 53 additions and 2 deletions
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12
src/main/java/net/minestom/server/network/packet/client/handshake/HandshakePacket.java
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@ -6,6 +6,7 @@ import net.minestom.server.chat.ColoredText;
import net.minestom.server.network.ConnectionState;
import net.minestom.server.network.packet.client.ClientPreplayPacket;
import net.minestom.server.network.packet.server.login.LoginDisconnect;
import net.minestom.server.network.player.NettyPlayerConnection;
import net.minestom.server.network.player.PlayerConnection;
import net.minestom.server.utils.binary.BinaryReader;
@ -36,8 +37,15 @@ public class HandshakePacket implements ClientPreplayPacket {
connection.setConnectionState(ConnectionState.STATUS);
break;
case 2:
connection.setConnectionState(ConnectionState.LOGIN);
if (protocolVersion != MinecraftServer.PROTOCOL_VERSION) {
if (protocolVersion == MinecraftServer.PROTOCOL_VERSION) {
connection.setConnectionState(ConnectionState.LOGIN);
if (connection instanceof NettyPlayerConnection) {
// Give to the connection the server info that the client used
((NettyPlayerConnection) connection).refreshServerInformation(serverAddress, serverPort);
}
} else {
// Incorrect client version
connection.sendPacket(new LoginDisconnect(INVALID_VERSION_TEXT.toString()));
connection.disconnect();
}

43
src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java
View File

@ -10,6 +10,7 @@ import net.minestom.server.extras.mojangAuth.MojangCrypt;
import net.minestom.server.network.netty.codec.PacketCompressor;
import net.minestom.server.network.packet.server.ServerPacket;
import net.minestom.server.network.packet.server.login.SetCompressionPacket;
import net.minestom.server.utils.validate.Check;
import javax.crypto.SecretKey;
import java.net.SocketAddress;
@ -27,12 +28,22 @@ public class NettyPlayerConnection extends PlayerConnection {
@Getter
private boolean compressed = false;
private String serverAddress;
private int serverPort;
public NettyPlayerConnection(SocketChannel channel) {
super();
this.channel = channel;
}
/**
* Sets the encryption key and add the channels to the pipeline.
*
* @param secretKey the secret key to use in the encryption
* @throws IllegalStateException if encryption is already enabled for this connection
*/
public void setEncryptionKey(SecretKey secretKey) {
Check.stateCondition(encrypted, "Encryption is already enabled!");
this.encrypted = true;
getChannel().pipeline().addBefore("framer", "decrypt", new Decrypter(MojangCrypt.getCipher(2, secretKey)));
getChannel().pipeline().addBefore("framer", "encrypt", new Encrypter(MojangCrypt.getCipher(1, secretKey)));
@ -93,4 +104,36 @@ public class NettyPlayerConnection extends PlayerConnection {
return channel;
}
/**
* Get the server address that the client used to connect.
* <p>
* WARNING: it is given by the client, it is possible for it to be wrong.
*
* @return the server address used
*/
public String getServerAddress() {
return serverAddress;
}
/**
* Get the server port that the client used to connect.
* <p>
* WARNING: it is given by the client, it is possible for it to be wrong.
*
* @return the server port used
*/
public int getServerPort() {
return serverPort;
}
/**
* Used in {@link net.minestom.server.network.packet.client.handshake.HandshakePacket} to change the internal fields.
*
* @param serverAddress the server address which the client used
* @param serverPort the server port which the client used
*/
public void refreshServerInformation(String serverAddress, int serverPort) {
this.serverAddress = serverAddress;
this.serverPort = serverPort;
}
}