[O] Read everything from aimedb

src/main/java/icu/samnyan/aqua/sega/aimedb/AimeDB.kt

@@ -13,7 +13,7 @@ import io.netty.channel.ChannelHandler
 import io.netty.channel.ChannelHandlerContext
 import io.netty.channel.ChannelInboundHandlerAdapter
 import org.springframework.stereotype.Component
-import java.nio.charset.StandardCharsets
+import java.nio.charset.StandardCharsets.US_ASCII
 import java.time.LocalDateTime
 import kotlin.jvm.optionals.getOrNull
 
@@ -29,13 +29,24 @@ class AimeDB(
 ): ChannelInboundHandlerAdapter() {
     val logger = logger()
 
-    data class AimeBaseInfo(val gameId: String, val keychipId: String)
-
-    fun getBaseInfo(input: ByteBuf) = AimeBaseInfo(
-        gameId = input.toString(0x0a, 0x0e - 0x0a, StandardCharsets.US_ASCII),
-        keychipId = input.toString(0x14, 0x1f - 0x14, StandardCharsets.US_ASCII)
+    data class AimeBaseInfo(
+        val magic: UInt, val version: UInt, val responseCode: UInt, val length: UInt,
+        val status: UInt, val gameId: String, val storeId: UInt, val keychipId: String
     )
 
+    fun ByteBuf.decodeHeader() = AimeBaseInfo(
+        magic = readShortLE().toUInt(),         // 00  2b
+        version = readShortLE().toUInt(),       // 02  2b
+        responseCode = readShortLE().toUInt(),  // 04  2b
+        length = readShortLE().toUInt(),        // 06  2b
+        status = readShortLE().toUInt(),        // 08  2b
+        gameId = readPaddedString(6u),          // 0a  6b
+        storeId = readIntLE().toUInt(),         // 10  4b
+        keychipId = readPaddedString(12u)       // 14 12b
+    )
+
+    fun ByteBuf.readPaddedString(maxLen: UInt) = readBytes(maxLen.toInt()).toString(US_ASCII).trimEnd('\u0000')
+
     data class Handler(val name: String, val fn: (ByteBuf) -> ByteBuf?)
 
     final val handlers = mapOf(
@@ -60,10 +71,10 @@ class AimeDB(
         try {
             val type = msg["type"] as Int
             val data = msg["data"] as ByteBuf
-            val base = getBaseInfo(data)
+            val base = data.decodeHeader()
             val handler = handlers[type] ?: return logger.error("AimeDB: Unknown request type 0x${type.toString(16)}")
 
-            logger.info("AimeDB /${handler.name} : (game ${base.gameId}, keychip ${base.keychipId})")
+            logger.info("AimeDB /${handler.name} : $base")
 
             // Check keychip
             // We do not check for type 0x13 because of a bug in duolinguo.dll