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Tim203 2019-11-30 21:30:25 +01:00
parent f1b19fc04e
commit 9a13b566cf
4 changed files with 117 additions and 6 deletions
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6
common/pom.xml
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@ -10,6 +10,12 @@
</parent>
<artifactId>common</artifactId>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.4</version>
<scope>providec</scope>
</dependency>
<dependency>
<groupId>com.github.steveice10</groupId>
<artifactId>opennbt</artifactId>

35
common/src/main/java/org/geysermc/floodgate/util/BedrockData.java Normal file
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@ -0,0 +1,35 @@
package org.geysermc.floodgate.util;
import lombok.AllArgsConstructor;
import lombok.Getter;
@AllArgsConstructor
@Getter
public class BedrockData {
public static final int EXPECTED_LENGTH = 6;
private String version;
private String username;
private String xuid;
private int deviceId;
private String languageCode;
private int inputMode;
private int dataLength;
public BedrockData(String version, String username, String xuid, int deviceId, String languageCode, int inputMode) {
this(version, username, xuid, deviceId, languageCode, inputMode, EXPECTED_LENGTH);
}
public static BedrockData fromString(String data) {
String[] split = data.split("\0");
if (split.length != EXPECTED_LENGTH) return null;
return new BedrockData(split[0], split[1], split[2], Integer.parseInt(split[3]), split[4], Integer.parseInt(split[5]), split.length);
}
public static BedrockData fromRawData(byte[] data) {
return fromString(new String(data));
}
public String toString() {
return version +'\0'+ username +'\0'+ xuid +'\0'+ deviceId +'\0'+ languageCode +'\0'+ inputMode;
}
}

76
common/src/main/java/org/geysermc/floodgate/util/EncryptionUtil.java Normal file
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@ -0,0 +1,76 @@
package org.geysermc.floodgate.util;
import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.*;
import java.security.spec.EncodedKeySpec;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;
public class EncryptionUtil {
public static String encrypt(Key key, String data) throws IllegalBlockSizeException,
InvalidKeyException, BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException {
KeyGenerator generator = KeyGenerator.getInstance("AES");
generator.init(128);
SecretKey secretKey = generator.generateKey();
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] encryptedText = cipher.doFinal(data.getBytes());
cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(key instanceof PublicKey ? Cipher.PUBLIC_KEY : Cipher.PRIVATE_KEY, key);
return Base64.getEncoder().encodeToString(cipher.doFinal(secretKey.getEncoded())) + '\0' +
Base64.getEncoder().encodeToString(encryptedText);
}
public static String encryptBedrockData(Key key, BedrockData data) throws IllegalBlockSizeException,
InvalidKeyException, BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException {
return encrypt(key, data.toString());
}
public static byte[] decrypt(Key key, String encryptedData) throws IllegalBlockSizeException,
InvalidKeyException, BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException {
String[] split = encryptedData.split("\0");
if (split.length != 2) {
throw new IllegalArgumentException("Expected two arguments, got " + split.length);
}
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(key instanceof PublicKey ? Cipher.PUBLIC_KEY : Cipher.PRIVATE_KEY, key);
byte[] decryptedKey = cipher.doFinal(Base64.getDecoder().decode(split[0]));
SecretKey secretKey = new SecretKeySpec(decryptedKey, 0, decryptedKey.length, "AES");
cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
return cipher.doFinal(Base64.getDecoder().decode(split[1]));
}
public static BedrockData decryptBedrockData(Key key, String encryptedData) throws IllegalBlockSizeException,
InvalidKeyException, BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException {
return BedrockData.fromRawData(decrypt(key, encryptedData));
}
@SuppressWarnings("unchecked")
public static <T extends Key> T getKeyFromFile(Path fileLocation, Class<T> keyType) throws
IOException, InvalidKeySpecException, NoSuchAlgorithmException {
boolean isPublicKey = keyType == PublicKey.class;
if (!isPublicKey && keyType != PrivateKey.class) {
throw new RuntimeException("I can only read public and private keys!");
}
byte[] key = Files.readAllBytes(fileLocation);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
EncodedKeySpec keySpec = isPublicKey ? new X509EncodedKeySpec(key) : new PKCS8EncodedKeySpec(key);
return (T) (isPublicKey ?
keyFactory.generatePublic(keySpec) :
keyFactory.generatePrivate(keySpec)
);
}
}

6
connector/pom.xml
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@ -22,12 +22,6 @@
<version>1.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.geysermc</groupId>
<artifactId>floodgate-common</artifactId>
<version>1.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-yaml</artifactId>