Fix packet parsing

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidBotNetworkHandler.kt

@@ -1,6 +1,7 @@
 package net.mamoe.mirai.qqandroid.network
 
 import kotlinx.coroutines.*
+import kotlinx.io.core.ByteReadPacket
 import kotlinx.io.core.use
 import net.mamoe.mirai.data.Packet
 import net.mamoe.mirai.event.broadcast
@@ -36,6 +37,27 @@ internal class QQAndroidBotNetworkHandler(bot: QQAndroidBot) : BotNetworkHandler
         LoginPacket.SubCommand9(bot.client).sendAndExpect<LoginPacket.LoginPacketResponse>()
     }
 
+    internal fun launchPacketProcessor(rawInput: ByteReadPacket): Job {
+        return launch(CoroutineName("Incoming Packet handler")) {
+            rawInput.debugPrint("Received").use { input ->
+                if (input.remaining == 0L) {
+                    bot.logger.error("Empty packet received. Consider if bad packet was sent.")
+                    return@launch
+                }
+                KnownPacketFactories.parseIncomingPacket(bot, input) { packet: Packet, packetId: PacketId, sequenceId: Int ->
+                    if (PacketReceivedEvent(packet).broadcast().cancelled) {
+                        return@parseIncomingPacket
+                    }
+                    packetListeners.forEach { listener ->
+                        if (listener.filter(packetId, sequenceId) && packetListeners.remove(listener)) {
+                            listener.complete(packet)
+                        }
+                    }
+                }
+            }
+        }
+    }
+
     private suspend fun processReceive() {
         while (channel.isOpen) {
             val rawInput = try {
@@ -52,25 +74,7 @@ internal class QQAndroidBotNetworkHandler(bot: QQAndroidBot) : BotNetworkHandler
                 bot.logger.error("Caught unexpected exceptions", e)
                 continue
             }
-
+            launchPacketProcessor(rawInput)
-            launch(CoroutineName("Incoming Packet handler")) {
-                rawInput.debugPrint("Received").use { input ->
-                    if (input.remaining == 0L) {
-                        bot.logger.error("Empty packet received. Consider if bad packet was sent.")
-                        return@launch
-                    }
-                    KnownPacketFactories.parseIncomingPacket(bot, input) { packet: Packet, packetId: PacketId, sequenceId: Int ->
-                        if (PacketReceivedEvent(packet).broadcast().cancelled) {
-                            return@parseIncomingPacket
-                        }
-                        packetListeners.forEach { listener ->
-                            if (listener.filter(packetId, sequenceId) && packetListeners.remove(listener)) {
-                                listener.complete(packet)
-                            }
-                        }
-                    }
-                }
-            }
         }
     }
 
@@ -96,9 +100,7 @@ internal class QQAndroidBotNetworkHandler(bot: QQAndroidBot) : BotNetworkHandler
         fun filter(packetId: PacketId, sequenceId: Int) = this.packetId == packetId && this.sequenceId == sequenceId
     }
 
-    override suspend fun awaitDisconnection() {
+    override suspend fun awaitDisconnection() = supervisor.join()
-        supervisor.join()
-    }
 
     override fun dispose(cause: Throwable?) {
         println("Closed")

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidClient.kt

@@ -6,6 +6,7 @@ import kotlinx.io.core.ByteReadPacket
 import kotlinx.io.core.toByteArray
 import net.mamoe.mirai.BotAccount
 import net.mamoe.mirai.qqandroid.QQAndroidBot
+import net.mamoe.mirai.qqandroid.network.protocol.packet.Tlv
 import net.mamoe.mirai.qqandroid.utils.Context
 import net.mamoe.mirai.qqandroid.utils.DeviceInfo
 import net.mamoe.mirai.qqandroid.utils.NetworkType
@@ -13,6 +14,7 @@ import net.mamoe.mirai.qqandroid.utils.SystemDeviceInfo
 import net.mamoe.mirai.utils.MiraiExperimentalAPI
 import net.mamoe.mirai.utils.MiraiInternalAPI
 import net.mamoe.mirai.utils.cryptor.ECDH
+import net.mamoe.mirai.utils.cryptor.contentToString
 import net.mamoe.mirai.utils.io.hexToBytes
 import net.mamoe.mirai.utils.unsafeWeakRef
 
@@ -40,6 +42,11 @@ internal open class QQAndroidClient(
     val device: DeviceInfo = SystemDeviceInfo(context),
     bot: QQAndroidBot
 ) {
+    @UseExperimental(MiraiInternalAPI::class)
+    override fun toString(): String { // net.mamoe.mirai.utils.cryptor.ProtoKt.contentToString
+        return "QQAndroidClient(account=$account, ecdh=$ecdh, device=$device, tgtgtKey=${tgtgtKey.contentToString()}, randomKey=${randomKey.contentToString()}, miscBitMap=$miscBitMap, mainSigMap=$mainSigMap, subSigMap=$subSigMap, _ssoSequenceId=$_ssoSequenceId, openAppId=$openAppId, apkVersionName=${apkVersionName.contentToString()}, loginState=$loginState, appClientVersion=$appClientVersion, networkType=$networkType, apkSignatureMd5=${apkSignatureMd5.contentToString()}, protocolVersion=$protocolVersion, apkId=${apkId.contentToString()}, t150=${t150?.contentToString()}, rollbackSig=${rollbackSig?.contentToString()}, ipFromT149=${ipFromT149?.contentToString()}, timeDifference=$timeDifference, uin=$uin, t530=${t530?.contentToString()}, t528=${t528?.contentToString()}, ksid='$ksid', pwdFlag=$pwdFlag, loginExtraData=$loginExtraData, wFastLoginInfo=$wFastLoginInfo, reserveUinInfo=$reserveUinInfo, wLoginSigInfo=$wLoginSigInfo, tlv113=${tlv113?.contentToString()}, qrPushSig=${qrPushSig.contentToString()}, mainDisplayName='$mainDisplayName')"
+    }
+
     val context by context.unsafeWeakRef()
     val bot: QQAndroidBot by bot.unsafeWeakRef()
 
@@ -81,7 +88,7 @@ internal open class QQAndroidClient(
      */
 
 
-    var t150: ByteArray? = null
+    var t150: Tlv? = null
     var rollbackSig: ByteArray? = null
     var ipFromT149: ByteArray? = null
     /**
@@ -100,7 +107,7 @@ internal open class QQAndroidClient(
     /**
      * t108 时更新
      */
-    var ksid: String = "|454001228437590|A8.2.0.27f6ea96"
+    var ksid: ByteArray = "|454001228437590|A8.2.0.27f6ea96".toByteArray()
     /**
      * t186
      */
@@ -110,19 +117,23 @@ internal open class QQAndroidClient(
      */
     var loginExtraData: LoginExtraData? = null
     lateinit var wFastLoginInfo: WFastLoginInfo
-    lateinit var reserveUinInfo: ReserveUinInfo
+    var reserveUinInfo: ReserveUinInfo? = null
     var wLoginSigInfo: WLoginSigInfo? = null
     var tlv113: ByteArray? = null
     lateinit var qrPushSig: ByteArray
 
-    lateinit var mainDisplayName: String
+    lateinit var mainDisplayName: ByteArray
 }
 
 class ReserveUinInfo(
     val imgType: ByteArray,
     val imgFormat: ByteArray,
     val imgUrl: ByteArray
-)
+) {
+    override fun toString(): String {
+        return "ReserveUinInfo(imgType=${imgType.contentToString()}, imgFormat=${imgFormat.contentToString()}, imgUrl=${imgUrl.contentToString()})"
+    }
+}
 
 class WFastLoginInfo(
     val outA1: ByteReadPacket,
@@ -130,7 +141,11 @@ class WFastLoginInfo(
     var iconUrl: String = "",
     var profileUrl: String = "",
     var userJson: String = ""
-)
+) {
+    override fun toString(): String {
+        return "WFastLoginInfo(outA1=$outA1, adUrl='$adUrl', iconUrl='$iconUrl', profileUrl='$profileUrl', userJson='$userJson')"
+    }
+}
 
 class WLoginSimpleInfo(
     val uin: Long, // uin
@@ -142,14 +157,22 @@ class WLoginSimpleInfo(
     val imgFormat: ByteArray,
     val imgUrl: ByteArray,
     val mainDisplayName: ByteArray
-)
+) {
+    override fun toString(): String {
+        return "WLoginSimpleInfo(uin=$uin, face=$face, age=$age, gender=$gender, nick='$nick', imgType=${imgType.contentToString()}, imgFormat=${imgFormat.contentToString()}, imgUrl=${imgUrl.contentToString()}, mainDisplayName=${mainDisplayName.contentToString()})"
+    }
+}
 
 class LoginExtraData(
     val uin: Long,
     val ip: ByteArray,
     val time: Int,
     val version: Int
-)
+) {
+    override fun toString(): String {
+        return "LoginExtraData(uin=$uin, ip=${ip.contentToString()}, time=$time, version=$version)"
+    }
+}
 
 class WLoginSigInfo(
     val uin: Long,
@@ -193,7 +216,11 @@ class WLoginSigInfo(
     val wtSessionTicket: WtSessionTicket,
     val wtSessionTicketKey: ByteArray,
     val deviceToken: ByteArray
-)
+) {
+    override fun toString(): String {
+        return "WLoginSigInfo(uin=$uin, encryptA1=${encryptA1.contentToString()}, noPicSig=${noPicSig.contentToString()}, G=${G.contentToString()}, dpwd=${dpwd.contentToString()}, randSeed=${randSeed.contentToString()}, simpleInfo=$simpleInfo, appPri=$appPri, a2ExpiryTime=$a2ExpiryTime, loginBitmap=$loginBitmap, tgt=${tgt.contentToString()}, a2CreationTime=$a2CreationTime, tgtKey=${tgtKey.contentToString()}, userStSig=$userStSig, userStKey=${userStKey.contentToString()}, userStWebSig=$userStWebSig, userA5=$userA5, userA8=$userA8, lsKey=$lsKey, sKey=$sKey, userSig64=$userSig64, openId=${openId.contentToString()}, openKey=$openKey, vKey=$vKey, accessToken=$accessToken, d2=$d2, d2Key=${d2Key.contentToString()}, sid=$sid, aqSig=$aqSig, psKey=$psKey, superKey=${superKey.contentToString()}, payToken=${payToken.contentToString()}, pf=${pf.contentToString()}, pfKey=${pfKey.contentToString()}, da2=${da2.contentToString()}, wtSessionTicket=$wtSessionTicket, wtSessionTicketKey=${wtSessionTicketKey.contentToString()}, deviceToken=${deviceToken.contentToString()})"
+    }
+}
 
 class UserStSig(data: ByteArray, creationTime: Long) : KeyWithCreationTime(data, creationTime)
 class LSKey(data: ByteArray, creationTime: Long, expireTime: Long) : KeyWithExpiry(data, creationTime, expireTime)

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/OutgoingPacketAndroid.kt

@@ -144,8 +144,8 @@ private inline fun BytePacketBuilder.writeLoginSsoPacket(
         writeInt(4)
 
         client.ksid.let {
-            writeShort((it.length + 2).toShort())
+            writeShort((it.size + 2).toShort())
-            writeStringUtf8(it)
+            writeFully(it)
         }
 
         writeInt(4)

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/PacketFactory.kt

@@ -48,6 +48,7 @@ private val DECRYPTER_16_ZERO = ByteArray(16)
 
 internal typealias PacketConsumer = suspend (packet: Packet, packetId: PacketId, ssoSequenceId: Int) -> Unit
 
+@UseExperimental(ExperimentalUnsignedTypes::class)
 internal object KnownPacketFactories : List<PacketFactory<*, *>> by mutableListOf(
     LoginPacket
 ) {
@@ -60,7 +61,11 @@ internal object KnownPacketFactories : List<PacketFactory<*, *>> by mutableListO
     suspend fun parseIncomingPacket(bot: QQAndroidBot, rawInput: ByteReadPacket, consumer: PacketConsumer) =
         rawInput.debugPrintIfFail("Incoming packet") {
             require(remaining < Int.MAX_VALUE) { "rawInput is too long" }
-            val expectedLength = readInt() - 4
+            val expectedLength = readUInt().toInt() - 4
+            if (expectedLength > 16e7) {
+                bot.logger.warning("Detect incomplete packet, ignoring.")
+                return@debugPrintIfFail
+            }
             check(remaining.toInt() == expectedLength) { "Invalid packet length. Expected $expectedLength, got ${rawInput.remaining} Probably packets merged? " }
             // login
             when (val flag1 = readInt()) {

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/Tlv.kt

@@ -10,6 +10,11 @@ import net.mamoe.mirai.utils.io.*
 import net.mamoe.mirai.utils.md5
 import kotlin.random.Random
 
+/**
+ * 显式表示一个 [ByteArray] 是一个 tlv 的 body
+ */
+inline class Tlv(val value: ByteArray)
+
 inline class LoginType(
     val value: Int
 ) {

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/utils/DeviceInfo.kt

@@ -3,6 +3,7 @@ package net.mamoe.mirai.qqandroid.utils
 import kotlinx.serialization.SerialId
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.protobuf.ProtoBuf
+import net.mamoe.mirai.utils.cryptor.contentToString
 import net.mamoe.mirai.utils.unsafeWeakRef
 
 abstract class DeviceInfo(
@@ -75,9 +76,15 @@ abstract class DeviceInfo(
         )
     }
 
+    override fun toString(): String { // net.mamoe.mirai.utils.cryptor.ProtoKt.contentToString
+        return "DeviceInfo(display=${display.contentToString()}, product=${product.contentToString()}, device=${device.contentToString()}, board=${board.contentToString()}, brand=${brand.contentToString()}, model=${model.contentToString()}, bootloader=${bootloader.contentToString()}, fingerprint=${fingerprint.contentToString()}, bootId=${bootId.contentToString()}, procVersion=${procVersion.contentToString()}, baseBand=${baseBand.contentToString()}, version=$version, simInfo=${simInfo.contentToString()}, osType=${osType.contentToString()}, macAddress=${macAddress.contentToString()}, wifiBSSID=${wifiBSSID?.contentToString()}, wifiSSID=${wifiSSID?.contentToString()}, imsiMd5=${imsiMd5.contentToString()}, imei='$imei', ipAddress='$ipAddress', androidId=${androidId.contentToString()}, apn=${apn.contentToString()})"
+    }
+
     interface Version {
         val incremental: ByteArray
         val release: ByteArray
         val codename: ByteArray
     }
+
+
 }

mirai-core/src/androidMain/kotlin/net/mamoe/mirai/utils/cryptor/ECDHAndroid.kt

@@ -45,4 +45,8 @@ actual class ECDH actual constructor(actual val keyPair: ECDHKeyPair) {
     actual fun calculateShareKeyByPeerPublicKey(peerPublicKey: ECDHPublicKey): ByteArray {
         return calculateShareKey(keyPair.privateKey, peerPublicKey)
     }
+
+    actual override fun toString(): String {
+        return "ECDH(keyPair=$keyPair)"
+    }
 }

mirai-core/src/androidMain/kotlin/net/mamoe/mirai/utils/cryptor/contentToString.kt

@@ -0,0 +1,18 @@
+package net.mamoe.mirai.utils.cryptor
+
+
+actual fun Any.contentToStringReflectively(prefix: String): String {
+    val newPrefix = prefix + ProtoMap.indent
+    return (this::class.simpleName ?: "<UnnamedClass>") + "#" + this::class.hashCode() + " {\n" +
+            this::class.java.fields.toMutableSet().apply { addAll(this::class.java.declaredFields) }.asSequence().filterNot { it.name.contains("$") || it.name == "Companion" || it.isSynthetic }
+                .joinToStringPrefixed(
+                    prefix = newPrefix
+                ) {
+                    it.isAccessible = true
+                    it.name + "=" + kotlin.runCatching {
+                        val value = it.get(this)
+                        if (value == this) "<this>"
+                        else value.contentToString(newPrefix)
+                    }.getOrElse { "<!>" }
+                } + "\n$prefix}"
+}

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/Bot.kt

@@ -93,7 +93,9 @@ abstract class Bot : CoroutineScope {
     abstract val network: BotNetworkHandler
 
     /**
-     * 登录
+     * 登录.
+     *
+     * 最终调用 [net.mamoe.mirai.network.BotNetworkHandler.login]
      *
      * @throws LoginFailedException
      */

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/cryptor/ECDH.kt

@@ -28,6 +28,8 @@ expect class ECDH(keyPair: ECDHKeyPair) {
         fun generateKeyPair(): ECDHKeyPair
         fun calculateShareKey(privateKey: ECDHPrivateKey, publicKey: ECDHPublicKey): ByteArray
     }
+
+    override fun toString(): String
 }
 
 @Suppress("FunctionName")

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/cryptor/Proto.kt

@@ -96,7 +96,7 @@ fun protoFieldNumber(number: UInt): Int = number.toInt().ushr(3)
 class ProtoMap(map: MutableMap<ProtoFieldId, Any>) : MutableMap<ProtoFieldId, Any> by map {
     companion object {
         @JvmStatic
-        val indent: String = "    "
+        internal val indent: String = "    "
     }
 
     override fun toString(): String {
@@ -117,7 +117,12 @@ class ProtoMap(map: MutableMap<ProtoFieldId, Any>) : MutableMap<ProtoFieldId, An
     }*/
 }
 
-internal fun Any.contentToString(prefix: String = ""): String = when (this) {
+fun <T> Sequence<T>.joinToStringPrefixed(prefix: String, transform: (T) -> CharSequence): String {
+    return this.joinToString(prefix = "$prefix${ProtoMap.indent}", separator = "\n$prefix${ProtoMap.indent}", transform = transform)
+}
+
+fun Any?.contentToString(prefix: String = ""): String = when (this) {
+    is Unit -> "Unit"
     is UInt -> "0x" + this.toUHexString("") + "($this)"
     is UByte -> "0x" + this.toUHexString() + "($this)"
     is UShort -> "0x" + this.toUHexString("") + "($this)"
@@ -131,12 +136,38 @@ internal fun Any.contentToString(prefix: String = ""): String = when (this) {
 
     is Boolean -> if (this) "true" else "false"
 
-    is ByteArray -> this.toUHexString()// + " (${this.encodeToString()})"
+    is ByteArray -> {
+        if (this.size == 0) "<Empty ByteArray>"
+        else this.toUHexString()// + " (${this.encodeToString()})"
+    }
+    is UByteArray -> {
+        if (this.size == 0) "<Empty UByteArray>"
+        else this.toUHexString()// + " (${this.encodeToString()})"
+    }
 
     is ProtoMap -> "ProtoMap(size=$size){\n" + this.toStringPrefixed("$prefix${ProtoMap.indent}${ProtoMap.indent}") + "\n$prefix${ProtoMap.indent}}"
-    else -> this.toString()
+    is Collection<*> -> this.joinToString(prefix = "[", postfix = "]") { it.contentToString() }
+    is Map<*, *> -> this.entries.joinToString(prefix = "{", postfix = "}") { it.key.contentToString() + "=" + it.value.contentToString() }
+    else -> {
+        if (this == null) "null"
+        else if (this::class.isData) this.toString()
+        else {
+            if (this::class.qualifiedName?.startsWith("net.mamoe.mirai.") == true) {
+                this.contentToStringReflectively(prefix + ProtoMap.indent)
+            } else this.toString()
+            /*
+            (this::class.simpleName ?: "<UnnamedClass>") + "#" + this::class.hashCode() + "{\n" +
+                    this::class.members.asSequence().filterIsInstance<KProperty<*>>().filter { !it.isSuspend && it.visibility == KVisibility.PUBLIC }
+                        .joinToStringPrefixed(
+                            prefix = ProtoMap.indent
+                        ) { it.name + "=" + kotlin.runCatching { it.call(it).contentToString(ProtoMap.indent) }.getOrElse { "<!>" } }
+             */
+        }
+    }
 }
 
+expect fun Any.contentToStringReflectively(prefix: String = ""): String
+
 fun ByteReadPacket.readProtoMap(length: Long = this.remaining): ProtoMap {
     val map = ProtoMap(mutableMapOf())
 

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/io/InputUtils.kt

@@ -9,6 +9,8 @@ import net.mamoe.mirai.contact.GroupId
 import net.mamoe.mirai.contact.GroupInternalId
 import net.mamoe.mirai.contact.groupId
 import net.mamoe.mirai.contact.groupInternalId
+import net.mamoe.mirai.utils.assertUnreachable
+import net.mamoe.mirai.utils.cryptor.contentToString
 import kotlin.jvm.JvmName
 import kotlin.jvm.JvmSynthetic
 
@@ -76,14 +78,14 @@ fun Input.readTLVMap(tagSize: Int = 2): MutableMap<Int, ByteArray> = readTLVMap(
 @Suppress("DuplicatedCode")
 fun Input.readTLVMap(expectingEOF: Boolean = true, tagSize: Int): MutableMap<Int, ByteArray> {
     val map = mutableMapOf<Int, ByteArray>()
-    var type: Int = 0
+    var key = 0
 
     while (inline {
             try {
-                type = when (tagSize) {
+                key = when (tagSize) {
-                    1 -> readByte().toInt()
+                    1 -> readUByte().toInt()
-                    2 -> readShort().toInt()
+                    2 -> readUShort().toInt()
-                    4 -> readInt()
+                    4 -> readUInt().toInt()
                     else -> error("Unsupported tag size: $tagSize")
                 }
             } catch (e: Exception) { // java.nio.BufferUnderflowException is not a EOFException...
@@ -92,22 +94,33 @@ fun Input.readTLVMap(expectingEOF: Boolean = true, tagSize: Int): MutableMap<Int
                 }
                 throw e
             }
-            type
+            key
         }.toUByte() != UByte.MAX_VALUE) {
 
-        check(!map.containsKey(type)) {
+        if (map.containsKey(key)) {
-            "Count not readTLVMap: duplicated key 0x${type.toUInt().toUHexString("")}. " +
+            DebugLogger.error(
-                    "map=$map" +
+                @Suppress("IMPLICIT_CAST_TO_ANY")
-                    ", duplicating value=${this.readUShortLVByteArray().toUHexString()}" +
+                """
-                    ", remaining=" + if (expectingEOF) this.readBytes().toUHexString() else "[Not expecting EOF]"
+                Error readTLVMap: 
-        }
+                duplicated key ${when (tagSize) {
-        try {
+                    1 -> key.toByte()
-            map[type] = this.readUShortLVByteArray()
+                    2 -> key.toShort()
-        } catch (e: Exception) { // BufferUnderflowException, java.io.EOFException
+                    4 -> key
-            if (expectingEOF) {
+                    else -> assertUnreachable()
-                return map
+                }.contentToString()}
+                map=${map.contentToString()}
+                duplicating value=${this.readUShortLVByteArray().toUHexString()}
+                """.trimIndent()
+            )
+        } else {
+            try {
+                map[key] = this.readUShortLVByteArray()
+            } catch (e: Exception) { // BufferUnderflowException, java.io.EOFException
+                // if (expectingEOF) {
+                //     return map
+                // }
+                throw e
             }
-            throw e
         }
     }
     return map

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/io/TypeConversion.kt

@@ -51,13 +51,13 @@ fun UShort.toByteArray(): ByteArray = with(toUInt()) {
 fun Short.toUHexString(separator: String = " "): String = this.toUShort().toUHexString(separator)
 
 fun UShort.toUHexString(separator: String = " "): String =
-    (this.toInt().shr(8).toUShort() and 255u).toByte().toUHexString() + separator + (this and 255u).toByte().toUHexString()
+    this.toInt().shr(8).toUShort().toUByte().toUHexString() + separator + this.toUByte().toUHexString()
 
 fun ULong.toUHexString(separator: String = " "): String =
     this.toLong().toUHexString(separator)
 
 fun Long.toUHexString(separator: String = " "): String =
-    this.ushr(32).toUInt().toUHexString(separator) + separator + this.ushr(32).toUInt().toUHexString(separator)
+    this.ushr(32).toUInt().toUHexString(separator) + separator + this.toUInt().toUHexString(separator)
 
 /**
  * 255 -> 00 FF

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/utils/cryptor/ECDHJvm.kt

@@ -51,4 +51,8 @@ actual class ECDH actual constructor(actual val keyPair: ECDHKeyPair) {
     actual fun calculateShareKeyByPeerPublicKey(peerPublicKey: ECDHPublicKey): ByteArray {
         return calculateShareKey(keyPair.privateKey, peerPublicKey)
     }
+
+    actual override fun toString(): String {
+        return "ECDH(keyPair=$keyPair)"
+    }
 }

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/utils/cryptor/contentToString.kt

@@ -0,0 +1,31 @@
+package net.mamoe.mirai.utils.cryptor
+
+import java.lang.reflect.Field
+import kotlin.reflect.full.allSuperclasses
+
+
+actual fun Any.contentToStringReflectively(prefix: String): String {
+    val newPrefix = prefix + ProtoMap.indent
+    return (this::class.simpleName ?: "<UnnamedClass>") + "#" + this::class.hashCode() + " {\n" +
+            this.allFieldsFromSuperClassesMatching { it.packageName.startsWith("net.mamoe.mirai") }
+                .distinctBy { it.name }
+                .filterNot { it.name.contains("$") || it.name == "Companion" || it.isSynthetic || it.name == "serialVersionUID" }
+                .joinToStringPrefixed(
+                    prefix = newPrefix
+                ) {
+                    it.trySetAccessible()
+                    it.name + "=" + kotlin.runCatching {
+                        val value = it.get(this)
+                        if (value == this) "<this>"
+                        else value.contentToString(newPrefix)
+                    }.getOrElse { "<!>" }
+                } + "\n$prefix}"
+}
+
+internal fun Any.allFieldsFromSuperClassesMatching(classFilter: (Class<out Any>) -> Boolean): Sequence<Field> {
+    return (this::class.java.takeIf(classFilter)?.declaredFields?.asSequence() ?: sequenceOf<Field>()) + this::class.allSuperclasses
+        .asSequence()
+        .map { it.java }
+        .filter(classFilter)
+        .flatMap { it.declaredFields.asSequence() }
+}