From 567ed059ade5b1ee5ddfcab156684f85d09c265c Mon Sep 17 00:00:00 2001
From: Azalea <22280294+hykilpikonna@users.noreply.github.com>
Date: Sat, 25 Oct 2025 04:46:18 +0800
Subject: [PATCH] [-] ByteBufUtil

---
 .../aqua/sega/aimedb/AimeDbEncryption.kt      | 25 ++++++--
 .../icu/samnyan/aqua/sega/allnet/AllNet.kt    |  4 +-
 .../samnyan/aqua/sega/util/ByteBufUtil.java   | 59 -------------------
 3 files changed, 22 insertions(+), 66 deletions(-)
 delete mode 100644 src/main/java/icu/samnyan/aqua/sega/util/ByteBufUtil.java

diff --git a/src/main/java/icu/samnyan/aqua/sega/aimedb/AimeDbEncryption.kt b/src/main/java/icu/samnyan/aqua/sega/aimedb/AimeDbEncryption.kt
index b7f17735..ad8a2bf4 100644
--- a/src/main/java/icu/samnyan/aqua/sega/aimedb/AimeDbEncryption.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/aimedb/AimeDbEncryption.kt
@@ -1,12 +1,30 @@
 package icu.samnyan.aqua.sega.aimedb
 
-import icu.samnyan.aqua.sega.util.ByteBufUtil
 import io.netty.buffer.ByteBuf
 import io.netty.buffer.Unpooled.copiedBuffer
 import java.nio.charset.StandardCharsets
 import javax.crypto.Cipher
 import javax.crypto.spec.SecretKeySpec
 
+fun ByteBuf.toBytes(): ByteArray {
+    val readerPos = readerIndex()
+    resetReaderIndex()
+    val result = ByteArray(readableBytes())
+    readBytes(result)
+    readerIndex(readerPos)
+    return result
+}
+
+fun ByteBuf.toAllBytes(): ByteArray {
+    val readerPos = readerIndex()
+    resetReaderIndex()
+    writerIndex(capacity())
+    val result = ByteArray(capacity())
+    readBytes(result)
+    readerIndex(readerPos)
+    return result
+}
+
 /**
  * @author samnyan (privateamusement@protonmail.com)
  */
@@ -15,7 +33,6 @@ object AimeDbEncryption {
     val enc = Cipher.getInstance("AES/ECB/NoPadding").apply { init(Cipher.ENCRYPT_MODE, KEY) }
     val dec = Cipher.getInstance("AES/ECB/NoPadding").apply { init(Cipher.DECRYPT_MODE, KEY) }
 
-    fun decrypt(src: ByteBuf) = copiedBuffer(dec.doFinal(ByteBufUtil.toBytes(src)))
-
-    fun encrypt(src: ByteBuf) = copiedBuffer(enc.doFinal(ByteBufUtil.toAllBytes(src)))
+    fun decrypt(src: ByteBuf) = copiedBuffer(dec.doFinal(src.toBytes()))
+    fun encrypt(src: ByteBuf) = copiedBuffer(enc.doFinal(src.toAllBytes()))
 }
diff --git a/src/main/java/icu/samnyan/aqua/sega/allnet/AllNet.kt b/src/main/java/icu/samnyan/aqua/sega/allnet/AllNet.kt
index c0c6a6b4..2240772f 100644
--- a/src/main/java/icu/samnyan/aqua/sega/allnet/AllNet.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/allnet/AllNet.kt
@@ -3,7 +3,6 @@ package icu.samnyan.aqua.sega.allnet
 import ext.*
 import icu.samnyan.aqua.net.db.AquaNetUserRepo
 import icu.samnyan.aqua.sega.allnet.AllNetBillingDecoder.decodeAllNet
-import icu.samnyan.aqua.sega.util.AquaConst
 import jakarta.servlet.http.HttpServletRequest
 import jakarta.servlet.http.HttpServletResponse
 import org.springframework.boot.context.properties.ConfigurationProperties
@@ -14,7 +13,6 @@ import java.io.InputStream
 import java.nio.charset.StandardCharsets
 import java.time.Instant
 import java.time.LocalDateTime
-import java.util.*
 
 @Configuration
 @ConfigurationProperties(prefix = "allnet.server")
@@ -84,7 +82,7 @@ class AllNet(
 
         logger.info("AllNet /DownloadOrder : $reqMap")
 
-        val serial = reqMap["serial"] ?: AquaConst.DEFAULT_KEYCHIP_ID
+        val serial = reqMap["serial"] ?: "A69E01A8888"
         val resp = mapOf(
             "stat" to "1",
             "serial" to serial
diff --git a/src/main/java/icu/samnyan/aqua/sega/util/ByteBufUtil.java b/src/main/java/icu/samnyan/aqua/sega/util/ByteBufUtil.java
deleted file mode 100644
index 557e64c6..00000000
--- a/src/main/java/icu/samnyan/aqua/sega/util/ByteBufUtil.java
+++ /dev/null
@@ -1,59 +0,0 @@
-package icu.samnyan.aqua.sega.util;
-
-import io.netty.buffer.ByteBuf;
-
-/**
- * @author samnyan (privateamusement@protonmail.com)
- */
-public class ByteBufUtil {
-
-    private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
-
-    /**
-     * Read bytes from start to current writer index
-     * Not modifying the reader index
-     *
-     * @param byteBuf The input buffer
-     * @return bytes
-     */
-    public static byte[] toBytes(ByteBuf byteBuf) {
-
-        int readerPos = byteBuf.readerIndex();
-        byteBuf.resetReaderIndex();
-        byte[] result = new byte[byteBuf.readableBytes()];
-        byteBuf.readBytes(result);
-
-        byteBuf.readerIndex(readerPos);
-        return result;
-    }
-
-    /**
-     * Move writer index to the capacity and read all the byte to the end
-     * Not modifying the reader index
-     *
-     * @param byteBuf The input buffer
-     * @return bytes
-     */
-    public static byte[] toAllBytes(ByteBuf byteBuf) {
-
-        int readerPos = byteBuf.readerIndex();
-        byteBuf.resetReaderIndex();
-        byteBuf.writerIndex(byteBuf.capacity());
-        byte[] result = new byte[byteBuf.capacity()];
-        byteBuf.readBytes(result);
-
-        byteBuf.readerIndex(readerPos);
-        return result;
-    }
-
-    public static String bytesToHex(byte[] bytes) {
-        char[] hexChars = new char[bytes.length * 2];
-        for (int j = 0; j < bytes.length; j++) {
-            int v = bytes[j] & 0xFF;
-            hexChars[j * 2] = HEX_ARRAY[v >>> 4];
-            hexChars[j * 2 + 1] = HEX_ARRAY[v & 0x0F];
-        }
-        return new String(hexChars);
-    }
-
-}