add files

.gitignore

@@ -0,0 +1,37 @@
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+# Eclipse
+.classpath
+.project
+.settings/
+
+# Intellij
+.idea/
+*.iml
+*.iws
+
+# Mac
+.DS_Store
+
+# Maven
+log/
+target/
+
+# Inclusions
+!lib/**
+
+# Compiled Files
+*.class
+bin/
+build/
+/bin1/
+java/build/**

README.md

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+# Barrel Proxy
+
+(WIP) A proxy to connect to Minecraft: Bedrock Edition servers with Minecraft: Java edition written in Java
+
+## Need implemented
+
+- Chunks
+- Inventory
+- Xbox Auth
+- And More...
+
+## Credits
+
+- [EZ4H](https://github.com/Project-EZ4H/EZ4H) (Archived)

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.barrelmc.barrel</groupId>
+    <artifactId>Barrel</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+
+    <repositories>
+        <repository>
+            <id>nukkitx-repo-release</id>
+            <url>https://repo.nukkitx.com/maven-releases/</url>
+        </repository>
+        <repository>
+            <id>nukkitx-repo-snapshot</id>
+            <url>https://repo.nukkitx.com/maven-snapshots/</url>
+        </repository>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.nukkitx.protocol</groupId>
+            <artifactId>bedrock-v440</artifactId>
+            <version>2.8.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.github.Steveice10</groupId>
+            <artifactId>MCProtocolLib</artifactId>
+            <version>1.16.5-2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>1.28</version>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.47</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>RELEASE</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.auth0</groupId>
+            <artifactId>java-jwt</artifactId>
+            <version>3.16.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.2.4</version>
+                <configuration>
+                    <transformers>
+                        <transformer
+                                implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                            <mainClass>org.barrelmc.barrel.Barrel</mainClass>
+                        </transformer>
+                    </transformers>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <release>11</release>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/java/org/barrelmc/barrel/Barrel.java

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+/*
+ *  ____                                 _
+ * | __ )    __ _   _ __   _ __    ___  | |
+ * |  _ \   / _` | | '__| | '__|  / _ \ | |
+ * | |_) | | (_| | | |    | |    |  __/ | |
+ * |____/   \__,_| |_|    |_|     \___| |_|
+ *
+ * Copyright (c) 2021 BarrelMC
+ * BarrelMC/Barrel is licensed under the MIT License
+ */
+
+package org.barrelmc.barrel;
+
+import org.barrelmc.barrel.server.ProxyServer;
+
+public class Barrel {
+
+    public static String DATA_PATH = System.getProperty("user.dir") + "/";
+
+    public static void main(String[] args) {
+        System.out.println("Starting Barrel Proxy software");
+        new ProxyServer(DATA_PATH);
+    }
+}

src/main/java/org/barrelmc/barrel/auth/JoseStuff.java

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+package org.barrelmc.barrel.auth;
+
+import java.security.SignatureException;
+
+// https://github.com/Project-EZ4H/EZ4H/blob/main/src/main/java/me/liuli/ez4h/minecraft/auth/JoseStuff.java
+public class JoseStuff {
+
+    public static byte[] DERToJOSE(byte[] derSignature, AlgorithmType algorithmType) throws SignatureException {
+        // DER Structure: http://crypto.stackexchange.com/a/1797
+        boolean derEncoded = derSignature[0] == 0x30 && derSignature.length != algorithmType.ecNumberSize * 2;
+        if (!derEncoded) {
+            throw new SignatureException("Invalid DER signature format.");
+        }
+
+        final byte[] joseSignature = new byte[algorithmType.ecNumberSize * 2];
+
+        //Skip 0x30
+        int offset = 1;
+        if (derSignature[1] == (byte) 0x81) {
+            //Skip sign
+            offset++;
+        }
+
+        //Convert to unsigned. Should match DER length - offset
+        int encodedLength = derSignature[offset++] & 0xff;
+        if (encodedLength != derSignature.length - offset) {
+            throw new SignatureException("Invalid DER signature format.");
+        }
+
+        //Skip 0x02
+        offset++;
+
+        //Obtain R number length (Includes padding) and skip it
+        int rLength = derSignature[offset++];
+        if (rLength > algorithmType.ecNumberSize + 1) {
+            throw new SignatureException("Invalid DER signature format.");
+        }
+        int rPadding = algorithmType.ecNumberSize - rLength;
+        //Retrieve R number
+        System.arraycopy(derSignature, offset + Math.max(-rPadding, 0), joseSignature, Math.max(rPadding, 0), rLength + Math.min(rPadding, 0));
+
+        //Skip R number and 0x02
+        offset += rLength + 1;
+
+        //Obtain S number length. (Includes padding)
+        int sLength = derSignature[offset++];
+        if (sLength > algorithmType.ecNumberSize + 1) {
+            throw new SignatureException("Invalid DER signature format.");
+        }
+        int sPadding = algorithmType.ecNumberSize - sLength;
+        //Retrieve R number
+        System.arraycopy(derSignature, offset + Math.max(-sPadding, 0), joseSignature, algorithmType.ecNumberSize + Math.max(sPadding, 0), sLength + Math.min(sPadding, 0));
+
+        return joseSignature;
+    }
+
+    public enum AlgorithmType {
+        ECDSA256(32), ECDSA384(48);
+
+        public int ecNumberSize;
+
+        AlgorithmType(int ecNumberSize) {
+            this.ecNumberSize = ecNumberSize;
+        }
+    }
+}

src/main/java/org/barrelmc/barrel/config/Config.java

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+/*
+ * Copyright (c) 2021 BarrelMC
+ * BarrelMC/Barrel is licensed under the MIT License
+ */
+
+package org.barrelmc.barrel.config;
+
+import lombok.Getter;
+import lombok.Setter;
+
+public class Config {
+
+    @Setter
+    @Getter
+    public String bindAddress;
+
+    @Setter
+    @Getter
+    public Integer port;
+
+    @Setter
+    @Getter
+    public String motd;
+
+    @Setter
+    @Getter
+    public String bedrockAddress;
+
+    @Setter
+    @Getter
+    public Integer bedrockPort;
+
+    @Setter
+    @Getter
+    public String auth;
+}

src/main/java/org/barrelmc/barrel/math/Vector3.java

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+package org.barrelmc.barrel.math;
+
+import com.nukkitx.math.GenericMath;
+import com.nukkitx.math.vector.Vector3f;
+import lombok.Getter;
+import lombok.Setter;
+
+public class Vector3 {
+
+    @Setter
+    @Getter
+    public double x;
+    @Setter
+    @Getter
+    public double y;
+    @Setter
+    @Getter
+    public double z;
+    @Setter
+    @Getter
+    public float yaw;
+    @Setter
+    @Getter
+    public float pitch;
+
+    public int getFloorX() {
+        return GenericMath.floor(this.x);
+    }
+
+    public int getFloorY() {
+        return GenericMath.floor(this.y);
+    }
+
+    public int getFloorZ() {
+        return GenericMath.floor(this.z);
+    }
+
+    public void setPosition(double x, double y, double z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    public void setLocation(double x, double y, double z, float yaw, float pitch) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.yaw = yaw;
+        this.pitch = pitch;
+    }
+
+    public void setRotation(float yaw, float pitch) {
+        this.yaw = yaw;
+        this.pitch = pitch;
+    }
+
+    public Vector3f getVector3f() {
+        return Vector3f.from(this.x, this.y + 1.62, this.z);
+    }
+}

src/main/java/org/barrelmc/barrel/network/BedrockBatchHandler.java

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+/*
+ * Copyright (c) 2021 BarrelMC
+ * BarrelMC/Barrel is licensed under the MIT License
+ */
+
+package org.barrelmc.barrel.network;
+
+import com.nukkitx.protocol.bedrock.BedrockPacket;
+import com.nukkitx.protocol.bedrock.BedrockSession;
+import com.nukkitx.protocol.bedrock.handler.BatchHandler;
+import io.netty.buffer.ByteBuf;
+import org.barrelmc.barrel.network.translator.PacketTranslator;
+import org.barrelmc.barrel.player.Player;
+
+import java.util.Collection;
+
+public class BedrockBatchHandler implements BatchHandler {
+
+    private final Player player;
+
+    public BedrockBatchHandler(Player player) {
+        this.player = player;
+    }
+
+    @Override
+    public void handle(BedrockSession bedrockSession, ByteBuf byteBuf, Collection<BedrockPacket> collection) {
+        for (BedrockPacket packet : collection) {
+            PacketTranslator.translateToJava(packet, this.player);
+        }
+    }
+}