Initial Commit

src/main/java/icu/samnyan/aqua/sega/aimedb/util/AimeDbUtil.java

@@ -0,0 +1,20 @@
+package icu.samnyan.aqua.sega.aimedb.util;
+
+import io.netty.buffer.ByteBuf;
+
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author samnyan (privateamusement@protonmail.com)
+ */
+public class AimeDbUtil {
+
+    public static Map<String, Object> getBaseInfo(ByteBuf in) {
+        Map<String, Object> resultMap = new HashMap<>();
+        resultMap.put("gameId", in.toString(0x000a, 0x000e - 0x000a, StandardCharsets.US_ASCII));
+        resultMap.put("keychipId", in.toString(0x0014, 0x001f - 0x0014, StandardCharsets.US_ASCII));
+        return resultMap;
+    }
+}

src/main/java/icu/samnyan/aqua/sega/aimedb/util/Encryption.java

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+package icu.samnyan.aqua.sega.aimedb.util;
+
+import icu.samnyan.aqua.sega.util.ByteBufUtil;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.spec.SecretKeySpec;
+import java.nio.charset.StandardCharsets;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * @author samnyan (privateamusement@protonmail.com)
+ */
+public class Encryption {
+
+    private static final Logger logger = LoggerFactory.getLogger(Encryption.class);
+
+    private static SecretKeySpec KEY = new SecretKeySpec("Copyright(C)SEGA".getBytes(StandardCharsets.UTF_8), "AES");
+
+    public static ByteBuf decrypt(ByteBuf src) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
+        Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
+        cipher.init(Cipher.DECRYPT_MODE, KEY);
+
+        return Unpooled.copiedBuffer(cipher.doFinal(ByteBufUtil.toBytes(src)));
+    }
+
+    public static ByteBuf encrypt(ByteBuf src) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
+        Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
+        cipher.init(Cipher.ENCRYPT_MODE, KEY);
+        byte[] bytes = cipher.doFinal(ByteBufUtil.toAllBytes(src));
+        return Unpooled.copiedBuffer(bytes);
+    }
+
+}

src/main/java/icu/samnyan/aqua/sega/aimedb/util/LogMapper.java

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+package icu.samnyan.aqua.sega.aimedb.util;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import icu.samnyan.aqua.sega.util.jackson.ByteBufSerializer;
+import io.netty.buffer.ByteBuf;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author samnyan (privateamusement@protonmail.com)
+ */
+@Component
+public class LogMapper {
+
+    private final ObjectMapper mapper;
+    private final SimpleModule module;
+
+    public LogMapper() {
+        mapper = new ObjectMapper();
+        module = new SimpleModule();
+        module.addSerializer(ByteBuf.class, new ByteBufSerializer());
+        mapper.registerModule(module);
+    }
+
+    public String write(Object o) throws JsonProcessingException {
+        return mapper.writeValueAsString(o);
+    }
+}