Long message

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

+package net.mamoe.mirai.qqandroid.utils.cryptor
+
+internal actual fun arraycopy(
+    src: ByteArray,
+    srcPos: Int,
+    dest: ByteArray,
+    destPos: Int,
+    length: Int
+) = System.arraycopy(src, srcPos, dest, destPos, length)
\ No newline at end of file

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

@@ -33,11 +33,13 @@ import net.mamoe.mirai.message.data.*
 import net.mamoe.mirai.qqandroid.contact.MemberInfoImpl
 import net.mamoe.mirai.qqandroid.contact.QQImpl
 import net.mamoe.mirai.qqandroid.contact.checkIsGroupImpl
+import net.mamoe.mirai.qqandroid.message.MessageSourceFromSendFriend
 import net.mamoe.mirai.qqandroid.message.OnlineFriendImageImpl
 import net.mamoe.mirai.qqandroid.message.OnlineGroupImageImpl
 import net.mamoe.mirai.qqandroid.network.QQAndroidBotNetworkHandler
 import net.mamoe.mirai.qqandroid.network.QQAndroidClient
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.GroupInfoImpl
+import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.MultiMsg
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.PbMessageSvc
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.TroopManagement
 import net.mamoe.mirai.qqandroid.network.protocol.packet.list.FriendList
@@ -45,6 +47,8 @@ import net.mamoe.mirai.utils.*
 import net.mamoe.mirai.utils.io.encodeToString
 import kotlin.collections.asSequence
 import kotlin.coroutines.CoroutineContext
+import kotlin.math.absoluteValue
+import kotlin.random.Random
 
 @OptIn(MiraiInternalAPI::class)
 internal expect class QQAndroidBot constructor(
@@ -360,6 +364,34 @@ internal abstract class QQAndroidBotBase constructor(
         return json.parse(GroupActiveData.serializer(), rep)
     }
 
+    @LowLevelAPI
+    @MiraiExperimentalAPI
+    override suspend fun _lowLevelSendLongMessage(groupCode: Long, message: Message) {
+        val source = MessageSourceFromSendFriend(
+            messageRandom = Random.nextInt().absoluteValue,
+            senderId = client.uin,
+            toUin = Group.calculateGroupUinByGroupCode(groupCode),
+            time = currentTimeSeconds,
+            groupId = groupCode,
+            originalMessage = message.asMessageChain(),
+            sequenceId = 0
+            //   sourceMessage = message
+        )
+
+        // TODO: 2020/3/26 util 方法来添加单例元素
+        val toSend = buildMessageChain {
+            source.originalMessage.filter { it !is MessageSource }.forEach {
+                add(it)
+            }
+            add(source)
+        }
+        network.run {
+            val response = MultiMsg.ApplyUp.createForLongMessage(this@QQAndroidBotBase.client, toSend, groupCode)
+                .sendAndExpect<MultiMsg.ApplyUp.Response>()
+            println(response._miraiContentToString())
+        }
+    }
+
     override suspend fun queryImageUrl(image: Image): String = when (image) {
         is OnlineFriendImageImpl -> image.originUrl
         is OnlineGroupImageImpl -> image.originUrl

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/message/MessageSourceImpl.kt

@@ -254,7 +254,7 @@ internal class MessageSourceFromSendGroup(
     override val groupId: Long,
     override val originalMessage: MessageChain
 ) : MessageSourceFromSend() {
-    private lateinit var sequenceIdDeferred: Deferred<Int>
+    internal lateinit var sequenceIdDeferred: Deferred<Int>
 
     @OptIn(ExperimentalCoroutinesApi::class)
     override val id: Long

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/message/messages.kt

@@ -6,6 +6,7 @@
  *
  * https://github.com/mamoe/mirai/blob/master/LICENSE
  */
+@file: OptIn(MiraiExperimentalAPI::class, MiraiInternalAPI::class, LowLevelAPI::class, ExperimentalUnsignedTypes::class)
 
 package net.mamoe.mirai.qqandroid.message
 
@@ -218,6 +219,8 @@ private val atAllData = ImMsgBody.Elem(
     )
 )
 
+private val UNSUPPORTED_MERGED_MESSAGE_PLAIN = PlainText("你的QQ暂不支持查看[转发多条消息]，请期待后续版本。")
+
 @OptIn(MiraiInternalAPI::class, MiraiExperimentalAPI::class)
 internal fun MessageChain.toRichTextElems(forGroup: Boolean): MutableList<ImMsgBody.Elem> {
     val elements = mutableListOf<ImMsgBody.Elem>()
@@ -233,31 +236,49 @@ internal fun MessageChain.toRichTextElems(forGroup: Boolean): MutableList<ImMsgB
 
 
     fun transformOneMessage(it: Message) {
+        if (it is RichMessage) {
+            val content = MiraiPlatformUtils.zip(it.content.toByteArray())
+            when (it) {
+                is LightApp -> elements.add(
+                    ImMsgBody.Elem(
+                        lightApp = ImMsgBody.LightAppElem(
+                            data = byteArrayOf(1) + content
+                        )
+                    )
+                )
+                is MergedForwardedMessage -> {
+                    elements.add(
+                        ImMsgBody.Elem(
+                            richMsg = ImMsgBody.RichMsg(
+                                serviceId = 35,
+                                template1 = byteArrayOf(1) + content
+                            )
+                        )
+                    )
+                    transformOneMessage(UNSUPPORTED_MERGED_MESSAGE_PLAIN) // required
+                }
+                else -> elements.add(
+                    ImMsgBody.Elem(
+                        richMsg = ImMsgBody.RichMsg(
+                            serviceId = when (it) {
+                                is XmlMessage -> 60
+                                is JsonMessage -> 1
+                                is MergedForwardedMessage -> 35
+                                else -> error("unsupported RichMessage: ${it::class.simpleName}")
+                            },
+                            template1 = byteArrayOf(1) + content
+                        )
+                    )
+                )
+            }
+        }
+
         when (it) {
             is PlainText -> elements.add(ImMsgBody.Elem(text = ImMsgBody.Text(str = it.stringValue)))
             is At -> {
                 elements.add(ImMsgBody.Elem(text = it.toJceData()))
                 elements.add(ImMsgBody.Elem(text = ImMsgBody.Text(str = " ")))
             }
-            is LightApp -> elements.add(
-                ImMsgBody.Elem(
-                    lightApp = ImMsgBody.LightAppElem(
-                        data = byteArrayOf(1) + MiraiPlatformUtils.zip(it.content.toByteArray())
-                    )
-                )
-            )
-            is RichMessage -> elements.add(
-                ImMsgBody.Elem(
-                    richMsg = ImMsgBody.RichMsg(
-                        serviceId = when (it) {
-                            is XmlMessage -> 60
-                            is JsonMessage -> 1
-                            else -> error("unsupported RichMessage")
-                        },
-                        template1 = byteArrayOf(1) + MiraiPlatformUtils.zip(it.content.toByteArray())
-                    )
-                )
-            )
             is OfflineGroupImage -> elements.add(ImMsgBody.Elem(customFace = it.toJceData()))
             is OnlineGroupImageImpl -> elements.add(ImMsgBody.Elem(customFace = it.delegate))
             is OnlineFriendImageImpl -> elements.add(ImMsgBody.Elem(notOnlineImage = it.delegate))
@@ -267,16 +288,17 @@ internal fun MessageChain.toRichTextElems(forGroup: Boolean): MutableList<ImMsgB
             is QuoteReplyToSend -> {
                 if (forGroup) {
                     check(it is QuoteReplyToSend.ToGroup) {
-                        "sending a quote to group using QuoteReplyToSend.ToFriend"
+                        "sending a quote to group using QuoteReplyToSend.ToFriend is prohibited"
                     }
                     if (it.sender is Member) {
                         transformOneMessage(it.createAt())
                     }
-                    transformOneMessage(" ".toMessage())
+                    transformOneMessage(PlainText(" "))
                 }
             }
             is QuoteReply,
-            is MessageSource -> {
+            is MessageSource,
+            -> {
 
             }
             else -> error("unsupported message type: ${it::class.simpleName}")
@@ -358,7 +380,7 @@ internal fun MsgComm.Msg.toMessageChain(): MessageChain {
     return buildMessageChain(elements.size + 1) {
         +MessageSourceFromMsg(delegate = this@toMessageChain)
         elements.joinToMessageChain(this)
-    }.removeAtIfHasQuoteReply()
+    }.cleanupRubbishMessageElements()
 }
 
 // These two functions are not identical, dont combine.
@@ -369,11 +391,31 @@ internal fun ImMsgBody.SourceMsg.toMessageChain(): MessageChain {
     return buildMessageChain(elements.size + 1) {
         +MessageSourceFromServer(delegate = this@toMessageChain)
         elements.joinToMessageChain(this)
-    }.removeAtIfHasQuoteReply()
+    }.cleanupRubbishMessageElements()
+}
+
+private fun MessageChain.cleanupRubbishMessageElements(): MessageChain {
+    var last: SingleMessage? = null
+    return buildMessageChain(initialSize = this.count()) {
+        this@cleanupRubbishMessageElements.forEach { element ->
+            if (last == null) {
+                last = element
+                return@forEach
+            } else {
+                if (last is MergedForwardedMessage && element is PlainText) {
+                    if (element == UNSUPPORTED_MERGED_MESSAGE_PLAIN) {
+                        last = element
+                        return@forEach
+                    }
+                }
+            }
+
+            add(element)
+            last = element
+        }
+    }
 }
 
-private fun MessageChain.removeAtIfHasQuoteReply(): MessageChain =
-    this
 /*
     if (this.any<QuoteReply>()) {
         var removed = false
@@ -387,9 +429,6 @@ private fun MessageChain.removeAtIfHasQuoteReply(): MessageChain =
         }.asMessageChain()
     } else this*/
 
-@OptIn(
-    MiraiInternalAPI::class, ExperimentalUnsignedTypes::class, MiraiDebugAPI::class, LowLevelAPI::class
-)
 internal fun List<ImMsgBody.Elem>.joinToMessageChain(message: MessageChainBuilder) {
     this.forEach {
         when {
@@ -425,6 +464,7 @@ internal fun List<ImMsgBody.Elem>.joinToMessageChain(message: MessageChainBuilde
                 when (it.richMsg.serviceId) {
                     1 -> message.add(JsonMessage(content))
                     60 -> message.add(XmlMessage(content))
+                    35 -> message.add(MergedForwardedMessage(content))
                     else -> {
                         @Suppress("DEPRECATION")
                         MiraiLogger.debug {

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

@@ -101,7 +101,7 @@ internal open class QQAndroidClient(
     var openAppId: Long = 715019303L
 
     val apkVersionName: ByteArray get() = "8.2.7".toByteArray()
-    val buildVer: String get() = "8.2.7.4410"
+    val buildVer: String get() = "8.2.7.4410" // 8.2.0.1296
 
     private val messageSequenceId: AtomicInt = atomic(22911)
     internal fun atomicNextMessageSequenceId(): Int = messageSequenceId.getAndAdd(2)

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/data/proto/LongMsg.kt

+package net.mamoe.mirai.qqandroid.network.protocol.data.proto
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.protobuf.ProtoId
+import net.mamoe.mirai.qqandroid.io.ProtoBuf
+import net.mamoe.mirai.qqandroid.network.protocol.packet.EMPTY_BYTE_ARRAY
+
+internal class LongMsg : ProtoBuf {
+    @Serializable
+    class MsgDeleteReq(
+        @ProtoId(1) val msgResid: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(2) val msgType: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class MsgDeleteRsp(
+        @ProtoId(1) val result: Int = 0,
+        @ProtoId(2) val msgResid: ByteArray = EMPTY_BYTE_ARRAY
+    ) : ProtoBuf
+
+    @Serializable
+    class MsgDownReq(
+        @ProtoId(1) val srcUin: Int = 0,
+        @ProtoId(2) val msgResid: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(3) val msgType: Int = 0,
+        @ProtoId(4) val needCache: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class MsgDownRsp(
+        @ProtoId(1) val result: Int = 0,
+        @ProtoId(2) val msgResid: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(3) val msgContent: ByteArray = EMPTY_BYTE_ARRAY
+    ) : ProtoBuf
+
+    @Serializable
+    class MsgUpReq(
+        @ProtoId(1) val msgType: Int = 0,
+        @ProtoId(2) val dstUin: Long = 0L,
+        @ProtoId(3) val msgId: Int = 0,
+        @ProtoId(4) val msgContent: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(5) val storeType: Int = 0,
+        @ProtoId(6) val msgUkey: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(7) val needCache: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class MsgUpRsp(
+        @ProtoId(1) val result: Int = 0,
+        @ProtoId(2) val msgId: Int = 0,
+        @ProtoId(3) val msgResid: ByteArray = EMPTY_BYTE_ARRAY
+    ) : ProtoBuf
+
+    @Serializable
+    class ReqBody(
+        @ProtoId(1) val subcmd: Int = 0,
+        @ProtoId(2) val termType: Int = 0,
+        @ProtoId(3) val platformType: Int = 0,
+        @ProtoId(4) val msgUpReq: List<LongMsg.MsgUpReq>? = null,
+        @ProtoId(5) val msgDownReq: List<LongMsg.MsgDownReq>? = null,
+        @ProtoId(6) val msgDelReq: List<LongMsg.MsgDeleteReq>? = null,
+        @ProtoId(10) val agentType: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class RspBody(
+        @ProtoId(1) val subcmd: Int = 0,
+        @ProtoId(2) val msgUpRsp: List<LongMsg.MsgUpRsp>? = null,
+        @ProtoId(3) val msgDownRsp: List<LongMsg.MsgDownRsp>? = null,
+        @ProtoId(4) val msgDelRsp: List<LongMsg.MsgDeleteRsp>? = null
+    ) : ProtoBuf
+}
\ No newline at end of file

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/data/proto/MsgTransmit.kt

+package net.mamoe.mirai.qqandroid.network.protocol.data.proto
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.protobuf.ProtoId
+import net.mamoe.mirai.qqandroid.io.ProtoBuf
+import net.mamoe.mirai.qqandroid.network.protocol.packet.EMPTY_BYTE_ARRAY
+
+internal class MsgTransmit : ProtoBuf {
+    @Serializable
+    class PbMultiMsgItem(
+        @ProtoId(1) val fileName: String = "",
+        @ProtoId(2) val buffer: ByteArray = EMPTY_BYTE_ARRAY
+    ) : ProtoBuf
+
+    @Serializable
+    class PbMultiMsgNew(
+        @ProtoId(1) val msg: List<MsgComm.Msg>? = null
+    ) : ProtoBuf
+
+    @Serializable
+    class PbMultiMsgTransmit(
+        @ProtoId(1) val msg: List<MsgComm.Msg>? = null,
+        @ProtoId(2) val pbItemList: List<MsgTransmit.PbMultiMsgItem>? = null
+    ) : ProtoBuf
+}
\ No newline at end of file

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/data/proto/MultiMsg.kt

+package net.mamoe.mirai.qqandroid.network.protocol.data.proto
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.protobuf.ProtoId
+import net.mamoe.mirai.qqandroid.io.ProtoBuf
+import net.mamoe.mirai.qqandroid.network.protocol.packet.EMPTY_BYTE_ARRAY
+
+@Serializable
+internal class MultiMsg : ProtoBuf {
+    @Serializable
+    class ExternMsg(
+        @ProtoId(1) val channelType: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class MultiMsgApplyDownReq(
+        @ProtoId(1) val msgResid: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(2) val msgType: Int = 0,
+        @ProtoId(3) val srcUin: Long = 0L
+    ) : ProtoBuf
+
+    @Serializable
+    class MultiMsgApplyDownRsp(
+        @ProtoId(1) val result: Int = 0,
+        @ProtoId(2) val thumbDownPara: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(3) val msgKey: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(4) val uint32DownIp: List<Int>? = null,
+        @ProtoId(5) val uint32DownPort: List<Int>? = null,
+        @ProtoId(6) val msgResid: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(7) val msgExternInfo: MultiMsg.ExternMsg? = null,
+        @ProtoId(8) val bytesDownIpV6: List<ByteArray>? = null,
+        @ProtoId(9) val uint32DownV6Port: List<Int>? = null
+    ) : ProtoBuf
+
+    @Serializable
+    class MultiMsgApplyUpReq(
+        @ProtoId(1) val dstUin: Long = 0L,
+        @ProtoId(2) val msgSize: Long = 0L,
+        @ProtoId(3) val msgMd5: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(4) val msgType: Int = 0,
+        @ProtoId(5) val applyId: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class MultiMsgApplyUpRsp(
+        @ProtoId(1) val result: Int = 0,
+        @ProtoId(2) val msgResid: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(3) val msgUkey: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(4) val uint32UpIp: List<Int>? = null,
+        @ProtoId(5) val uint32UpPort: List<Int>? = null,
+        @ProtoId(6) val blockSize: Long = 0L,
+        @ProtoId(7) val upOffset: Long = 0L,
+        @ProtoId(8) val applyId: Int = 0,
+        @ProtoId(9) val msgKey: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(10) val msgSig: ByteArray = EMPTY_BYTE_ARRAY,
+        @ProtoId(11) val msgExternInfo: MultiMsg.ExternMsg? = null,
+        @ProtoId(12) val bytesUpIpV6: List<ByteArray>? = null,
+        @ProtoId(13) val uint32UpV6Port: List<Int>? = null
+    ) : ProtoBuf
+
+    @Serializable
+    class ReqBody(
+        @ProtoId(1) val subcmd: Int = 0,
+        @ProtoId(2) val termType: Int = 0,
+        @ProtoId(3) val platformType: Int = 0,
+        @ProtoId(4) val netType: Int = 0,
+        @ProtoId(5) val buildVer: String = "",
+        @ProtoId(6) val multimsgApplyupReq: List<MultiMsg.MultiMsgApplyUpReq>? = null,
+        @ProtoId(7) val multimsgApplydownReq: List<MultiMsg.MultiMsgApplyDownReq>? = null,
+        @ProtoId(8) val buType: Int = 0,
+        @ProtoId(9) val reqChannelType: Int = 0
+    ) : ProtoBuf
+
+    @Serializable
+    class RspBody(
+        @ProtoId(1) val subcmd: Int = 0,
+        @ProtoId(2) val multimsgApplyupRsp: List<MultiMsg.MultiMsgApplyUpRsp>? = null,
+        @ProtoId(3) val multimsgApplydownRsp: List<MultiMsg.MultiMsgApplyDownRsp>? = null
+    ) : ProtoBuf
+}

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

@@ -11,9 +11,10 @@ package net.mamoe.mirai.qqandroid.network.protocol.packet
 
 import kotlinx.io.core.*
 import kotlinx.io.pool.useInstance
-import net.mamoe.mirai.qqandroid.network.Packet
 import net.mamoe.mirai.event.Event
 import net.mamoe.mirai.qqandroid.QQAndroidBot
+import net.mamoe.mirai.qqandroid.network.Packet
+import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.MultiMsg
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.PbMessageSvc
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.TroopManagement
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.image.ImgStore
@@ -144,7 +145,8 @@ internal object KnownPacketFactories {
         TroopManagement.EditGroupNametag,
         TroopManagement.Kick,
         Heartbeat.Alive,
-        PbMessageSvc.PbMsgWithDraw
+        PbMessageSvc.PbMsgWithDraw,
+        MultiMsg.ApplyUp
     )
 
     object IncomingFactories : List<IncomingPacketFactory<*>> by mutableListOf(

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

+/*
+ * Copyright 2020 Mamoe Technologies and contributors.
+ *
+ * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ * Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
+ *
+ * https://github.com/mamoe/mirai/blob/master/LICENSE
+ */
+
+@file:Suppress("EXPERIMENTAL_API_USAGE")
+
+package net.mamoe.mirai.qqandroid.network.protocol.packet.chat
+
+import kotlinx.io.core.ByteReadPacket
+import net.mamoe.mirai.Bot
+import net.mamoe.mirai.message.data.*
+import net.mamoe.mirai.qqandroid.QQAndroidBot
+import net.mamoe.mirai.qqandroid.io.serialization.readProtoBuf
+import net.mamoe.mirai.qqandroid.io.serialization.toByteArray
+import net.mamoe.mirai.qqandroid.io.serialization.writeProtoBuf
+import net.mamoe.mirai.qqandroid.message.MessageSourceFromSendFriend
+import net.mamoe.mirai.qqandroid.message.MessageSourceFromSendGroup
+import net.mamoe.mirai.qqandroid.message.toRichTextElems
+import net.mamoe.mirai.qqandroid.network.Packet
+import net.mamoe.mirai.qqandroid.network.QQAndroidClient
+import net.mamoe.mirai.qqandroid.network.protocol.data.proto.ImMsgBody
+import net.mamoe.mirai.qqandroid.network.protocol.data.proto.MsgComm
+import net.mamoe.mirai.qqandroid.network.protocol.data.proto.MsgTransmit
+import net.mamoe.mirai.qqandroid.network.protocol.data.proto.MultiMsg
+import net.mamoe.mirai.qqandroid.network.protocol.packet.OutgoingPacket
+import net.mamoe.mirai.qqandroid.network.protocol.packet.OutgoingPacketFactory
+import net.mamoe.mirai.qqandroid.network.protocol.packet.buildOutgoingUniPacket
+import net.mamoe.mirai.utils.MiraiInternalAPI
+import net.mamoe.mirai.utils.MiraiPlatformUtils
+import net.mamoe.mirai.utils._miraiContentToString
+
+internal class MessageValidationData @OptIn(MiraiInternalAPI::class) constructor(
+    val data: ByteArray,
+    val md5: ByteArray = MiraiPlatformUtils.md5(data),
+) {
+    override fun toString(): String {
+        return "MessageValidationData(data=<size=${data.size}>, md5=${md5.contentToString()})"
+    }
+}
+
+@OptIn(MiraiInternalAPI::class)
+internal fun MessageChain.calculateValidationData(
+    bot: Bot
+): MessageValidationData {
+    // top_package.akkv#method_42702
+    val source: MessageSource by this.orElse { error("internal error: calculateValidationData: cannot find MessageSource, chain=${this._miraiContentToString()}") }
+
+    check(source is MessageSourceFromSendGroup || source is MessageSourceFromSendFriend) {
+        "internal error: calculateValidationData: MessageSource must be "
+    }
+
+    val richTextElems = this.toRichTextElems(source is MessageSourceFromSendGroup)
+
+    val msgTransmit = MsgTransmit.PbMultiMsgTransmit(
+        msg = listOf(
+            MsgComm.Msg(
+                msgHead = MsgComm.MsgHead(
+                    fromUin = source.senderId,
+                    msgSeq = source.sequenceId,
+                    msgTime = source.time.toInt(),
+                    msgUid = source.messageRandom.toLong(), // TODO: 2020/3/26 CHECK IT
+                    mutiltransHead = MsgComm.MutilTransHead(
+                        status = 0,
+                        msgId = 1
+                    ),
+                    msgType = 82, // troop
+                    groupInfo = MsgComm.GroupInfo(
+                        groupCode = source.toUin,
+                        groupCard = bot.nick,
+                    ),
+                ),
+                msgBody = ImMsgBody.MsgBody(
+                    richText = ImMsgBody.RichText(
+                        elems = richTextElems
+                    )
+                )
+            )
+        )
+    )
+
+    val bytes = msgTransmit.toByteArray(MsgTransmit.PbMultiMsgTransmit.serializer())
+
+    return MessageValidationData(MiraiPlatformUtils.zip(bytes))
+}
+
+/*
+
+=======================处理客户端到服务器=======================
+flag1=0x0000000B(11), flag2=1, sequenceId = 00 00 E0 90, flag3=00, // 解密 bodyouter by D2 key
+Packet 20:02:51 : ByteReadPacket outer body decrypted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
+// 尝试解 Uni
+// head
+Packet Debug 20:02:51 : head=00 00 00 18 4D 65 73 73 61 67 65 53 76 63 2E 50 62 53 65 6E 64 4D 73 67 00 00 00 08 8A 51 B1 25 00 00 00 04
+Packet 20:02:51 : commandName=MessageSvc.PbSendMsg
+MessageSvc.PbSendMsg
+  unknown4Bytes=8A 51 B1 25
+  extraData=
+Packet Debug 20:02:51 : Real body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
+Packet 20:02:51 : ByteReadPacket uni packet=
+Packet 20:02:51 : =======================共有 1 个包=======================
+
+=======================处理服务器到客户端客户端=======================
+
+=======================处理服务器到客户端客户端=======================
+Packet 20:02:51 : ByteReadPacket 正在处理=00 00 00 0B 01 00 00 00 00 0E 31 39 39 34 37 30 31 30 32 31 0B 1C 26 01 C3 F8 46 01 ED 8D 1E C8 86 C1 62 89 9C F4 16 57 67 99 4F 39 E7 69 4F 74 33 6E 92 89 74 49 09 84 19 10 6F 3C 81 DA 0C 92 DD 04 B7 60 C9 DB C8 4F F8 60 57 A2 3F CF 95 5F 01 F8 0A 79 E7 28 B9 6A F6 AD 0A 71 BA 54 F8 8C DF AF CF D3
+Packet 20:02:51 : flag1(0A/0B) = 0B
+Packet 20:02:51 : 包类型(flag2) = 1. (可能是 uni)
+Packet 20:02:51 : 成功使用 d2Key 解密
+Packet 20:02:51 : ByteReadPacket sso/uni body==00 00 00 34 00 00 E0 90 00 00 00 00 00 00 00 04 00 00 00 18 4D 65 73 73 61 67 65 53 76 63 2E 50 62 53 65 6E 64 4D 73 67 00 00 00 08 8A 51 B1 25 00 00 00 00 00 00 00 0C 08 00 18 EA 90 ED F3 05
+Packet 20:02:51 : sequenceId = 57488
+Packet 20:02:51 : sso(inner)extraData =
+Packet Debug 20:02:51 : commandName=MessageSvc.PbSendMsg
+Packet 20:02:51 : 不是oicq response(可能是 UNI/PB)= 00 00 00 0C 08 00 18 EA 90 ED F3 05
+Packet 20:02:51 : =======================共有 0 个包=======================
+
+ */
+
+/*
+
+=======================处理客户端到服务器=======================
+flag1=0x0000000B(11), flag2=1, sequenceId = 00 00 E0 8D, flag3=00, // 解密 bodyouter by D2 key
+Packet 20:02:50 : ByteReadPacket outer body decrypted=00 00 00 24 00 00 00 14 4D 75 6C 74 69 4D 73 67 2E 41 70 70 6C 79 55 70 00 00 00 08 8A 51 B1 25 00 00 00 04 00 00 00 3B 08 01 10 05 18 09 20 03 2A 0A 38 2E 32 2E 30 2E 31 32 39 36 32 1F 08 F6 DD 96 FC 03 10 CF 05 1A 10 BB 45 B9 71 2C F4 D3 06 5D A7 A7 A2 FF D4 62 D2 20 03 28 00 40 01
+// 尝试解 Uni
+// head
+Packet Debug 20:02:50 : head=00 00 00 14 4D 75 6C 74 69 4D 73 67 2E 41 70 70 6C 79 55 70 00 00 00 08 8A 51 B1 25 00 00 00 04
+Packet 20:02:50 : commandName=MultiMsg.ApplyUp
+MultiMsg.ApplyUp
+  unknown4Bytes=8A 51 B1 25
+  extraData=
+Packet Debug 20:02:50 : Real body=08 01 10 05 18 09 20 03 2A 0A 38 2E 32 2E 30 2E 31 32 39 36 32 1F 08 F6 DD 96 FC 03 10 CF 05 1A 10 BB 45 B9 71 2C F4 D3 06 5D A7 A7 A2 FF D4 62 D2 20 03 28 00 40 01
+Packet 20:02:50 : ByteReadPacket uni packet=
+Packet 20:02:50 : =======================共有 1 个包=======================
+
+=======================处理服务器到客户端客户端=======================
+Packet 20:02:50 : ByteReadPacket 正在处理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
+Packet 20:02:50 : flag1(0A/0B) = 0B
+Packet 20:02:50 : 包类型(flag2) = 1. (可能是 uni)
+Packet 20:02:50 : 成功使用 d2Key 解密
+Packet 20:02:50 : ByteReadPacket sso/uni body==00 00 00 30 00 00 E0 8D 00 00 00 00 00 00 00 04 00 00 00 14 4D 75 6C 74 69 4D 73 67 2E 41 70 70 6C 79 55 70 00 00 00 08 8A 51 B1 25 00 00 00 00 00 00 01 88 08 01 12 FF 02 08 00 12 40 4F 54 39 4E 4C 63 47 31 5A 79 79 62 78 69 39 30 76 77 2F 63 30 59 7A 30 42 4A 69 45 63 4B 4A 32 32 36 43 42 55 6B 56 46 49 74 73 7A 34 51 5A 73 55 78 7A 75 71 5A 53 2F 78 33 66 50 76 53 4C 74 1A 98 01 1B 76 62 FB B2 C6 24 C3 1F 39 47 0D 45 5C 77 BD 0C 8F 69 FB C8 4F D8 76 83 26 60 EA A3 24 BC FD F6 C8 B4 64 DA 47 9D 6C 1A FA F4 EF 02 FC A4 76 1F 87 EB FF 51 62 20 E9 1F 74 6B 2F 7B 7C 53 EC 6D A2 53 AC 2B 93 B4 79 83 6D E6 D8 86 E1 D5 E2 4D EE 75 03 A3 3B 72 EB 0A 3E 13 3A 80 70 EF CC B4 0D F9 42 E3 DF 5F 7A 4C 36 BC 3B 9C 31 5A B1 40 B4 5B 49 26 CE 65 BD 2F 86 8D 9D 0C 34 1B 5E 32 6E EF 60 4B E1 60 7F 1A 98 CF 14 42 85 A6 F8 BE A5 EE A7 A6 C7 9E 11 20 FB AE FA 95 0A 20 B7 87 A4 8F 0E 20 FB AE FA 9D 0A 20 E5 B6 95 B0 0A 28 50 28 90 3F 28 BB 03 28 50 40 00 4A 10 4E 64 43 67 6D 61 71 35 6D 52 73 43 53 38 41 58 52 68 AF 63 72 0B 4D 5B 17 6E D8 35 C1 D3 3F C8 D7 FC F0 A8 0A 67 4D B5 A6 B3 B7 E2 E1 9F 96 68 D3 BC AD 4A 6A 20 72 E8 D2 44 C3 8B 93 60 F3 3C 4B 46 83 E4 75 A2 3C 72 A4 F7 31 D9 88 89 23 34 9A AF EF FC 17 29 5D 6C D0 2B F1 63 D5 9F E2 B9 B5 49 D2 62 E3 D0 F9 19 C5 0D 20 AF 78 D5 34 7E BB B7 E2 8E 5C 69 F4 38 38 E7
+Packet 20:02:50 : sequenceId = 57485
+Packet 20:02:50 : sso(inner)extraData =
+Packet Debug 20:02:50 : commandName=MultiMsg.ApplyUp
+找不到包 PacketFactory
+Packet 20:02:50 : 传递给 PacketFactory 的数据 = 00 00 01 88 08 01 12 FF 02 08 00 12 40 4F 54 39 4E 4C 63 47 31 5A 79 79 62 78 69 39 30 76 77 2F 63 30 59 7A 30 42 4A 69 45 63 4B 4A 32 32 36 43 42 55 6B 56 46 49 74 73 7A 34 51 5A 73 55 78 7A 75 71 5A 53 2F 78 33 66 50 76 53 4C 74 1A 98 01 1B 76 62 FB B2 C6 24 C3 1F 39 47 0D 45 5C 77 BD 0C 8F 69 FB C8 4F D8 76 83 26 60 EA A3 24 BC FD F6 C8 B4 64 DA 47 9D 6C 1A FA F4 EF 02 FC A4 76 1F 87 EB FF 51 62 20 E9 1F 74 6B 2F 7B 7C 53 EC 6D A2 53 AC 2B 93 B4 79 83 6D E6 D8 86 E1 D5 E2 4D EE 75 03 A3 3B 72 EB 0A 3E 13 3A 80 70 EF CC B4 0D F9 42 E3 DF 5F 7A 4C 36 BC 3B 9C 31 5A B1 40 B4 5B 49 26 CE 65 BD 2F 86 8D 9D 0C 34 1B 5E 32 6E EF 60 4B E1 60 7F 1A 98 CF 14 42 85 A6 F8 BE A5 EE A7 A6 C7 9E 11 20 FB AE FA 95 0A 20 B7 87 A4 8F 0E 20 FB AE FA 9D 0A 20 E5 B6 95 B0 0A 28 50 28 90 3F 28 BB 03 28 50 40 00 4A 10 4E 64 43 67 6D 61 71 35 6D 52 73 43 53 38 41 58 52 68 AF 63 72 0B 4D 5B 17 6E D8 35 C1 D3 3F C8 D7 FC F0 A8 0A 67 4D B5 A6 B3 B7 E2 E1 9F 96 68 D3 BC AD 4A 6A 20 72 E8 D2 44 C3 8B 93 60 F3 3C 4B 46 83 E4 75 A2 3C 72 A4 F7 31 D9 88 89 23 34 9A AF EF FC 17 29 5D 6C D0 2B F1 63 D5 9F E2 B9 B5 49 D2 62 E3 D0 F9 19 C5 0D 20 AF 78 D5 34 7E BB B7 E2 8E 5C 69 F4 38 38 E7
+Packet 20:02:50 : 不是oicq response(可能是 UNI/PB)=
+Packet 20:02:50 : =======================共有 0 个包=======================
+ */
+
+internal class MultiMsg {
+
+    object ApplyUp : OutgoingPacketFactory<ApplyUp.Response>("MultiMsg.ApplyUp") {
+        class Response(
+            val proto: MultiMsg.MultiMsgApplyUpRsp
+        ) : Packet
+
+        fun createForLongMessage(
+            client: QQAndroidClient,
+            message: MessageChain,
+            dstUin: Long, // group uin
+        ): OutgoingPacket = createForLongMessage(client, message.calculateValidationData(client.bot), dstUin)
+
+        // captured from group
+        private fun createForLongMessage(
+            client: QQAndroidClient,
+            messageData: MessageValidationData,
+            dstUin: Long // group uin
+        ): OutgoingPacket = buildOutgoingUniPacket(client) {
+            writeProtoBuf(
+                MultiMsg.ReqBody.serializer(),
+                MultiMsg.ReqBody(
+                    subcmd = 1,
+                    termType = 5,
+                    platformType = 9,
+                    netType = 3, // wifi=3, wap=5
+                    buildVer = client.buildVer,
+                    buType = 1,
+                    multimsgApplyupReq = listOf(
+                        MultiMsg.MultiMsgApplyUpReq(
+                            applyId = 0,
+                            dstUin = dstUin,
+                            msgMd5 = messageData.md5,
+                            msgSize = messageData.data.size.toLong(),
+                            msgType = 3 // TODO 3 for group?
+                        )
+                    )
+                )
+            )
+        }
+
+        /*
+        RspBody#195600860 {
+            multimsgApplyupRsp=[MultiMsgApplyUpRsp#314337396 {
+                    applyId=0x00000000(0)
+                    blockSize=0x0000000000000000(0)
+                    msgKey=4E 64 43 67 6D 61 71 35 6D 52 73 43 53 38 41 58
+                    msgResid=4F 54 39 4E 4C 63 47 31 5A 79 79 62 78 69 39 30 76 77 2F 63 30 59 7A 30 42 4A 69 45 63 4B 4A 32 32 36 43 42 55 6B 56 46 49 74 73 7A 34 51 5A 73 55 78 7A 75 71 5A 53 2F 78 33 66 50 76 53 4C 74
+                    msgSig=AF 63 72 0B 4D 5B 17 6E D8 35 C1 D3 3F C8 D7 FC F0 A8 0A 67 4D B5 A6 B3 B7 E2 E1 9F 96 68 D3 BC AD 4A 6A 20 72 E8 D2 44 C3 8B 93 60 F3 3C 4B 46 83 E4 75 A2 3C 72 A4 F7 31 D9 88 89 23 34 9A AF EF FC 17 29 5D 6C D0 2B F1 63 D5 9F E2 B9 B5 49 D2 62 E3 D0 F9 19 C5 0D 20 AF 78 D5 34 7E BB B7 E2 8E 5C 69 F4 38 38 E7
+                    msgUkey=1B 76 62 FB B2 C6 24 C3 1F 39 47 0D 45 5C 77 BD 0C 8F 69 FB C8 4F D8 76 83 26 60 EA A3 24 BC FD F6 C8 B4 64 DA 47 9D 6C 1A FA F4 EF 02 FC A4 76 1F 87 EB FF 51 62 20 E9 1F 74 6B 2F 7B 7C 53 EC 6D A2 53 AC 2B 93 B4 79 83 6D E6 D8 86 E1 D5 E2 4D EE 75 03 A3 3B 72 EB 0A 3E 13 3A 80 70 EF CC B4 0D F9 42 E3 DF 5F 7A 4C 36 BC 3B 9C 31 5A B1 40 B4 5B 49 26 CE 65 BD 2F 86 8D 9D 0C 34 1B 5E 32 6E EF 60 4B E1 60 7F 1A 98 CF 14 42 85 A6 F8 BE A5 EE A7 A6 C7 9E 11
+                    result=0x00000000(0)
+                    uint32UpIp=[0xA2BE977B(-1564567685), 0xE1E903B7(-504822857), 0xA3BE977B(-1547790469), 0xA6055B65(-1509598363)]
+                    uint32UpPort=[0x00000050(80), 0x00001F90(8080), 0x000001BB(443), 0x00000050(80)]
+                    upOffset=0x0000000000000000(0)
+            }]
+            subcmd=0x00000001(1)
+    }
+         */
+        override suspend fun ByteReadPacket.decode(bot: QQAndroidBot): Response {
+            val response = readProtoBuf(MultiMsg.MultiMsgApplyUpRsp.serializer())
+            check(response.result == 0) {
+                kotlin.run {
+                    println(response._miraiContentToString())
+                }.let { "Protocol error: MultiMsg.ApplyUp failed with result ${response.result}" }
+            }
+            return Response(response)
+        }
+    }
+}
\ No newline at end of file

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

+/*
+ * Copyright 2020 Mamoe Technologies and contributors.
+ *
+ * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ * Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
+ *
+ * https://github.com/mamoe/mirai/blob/master/LICENSE
+ */
+
+package net.mamoe.mirai.qqandroid.utils.cryptor
+
+import net.mamoe.mirai.utils.io.toUHexString
+
+internal object MultiMsgCryptor {
+    private val impl = class_1457()
+
+    fun decrypt(data: ByteArray, offset: Int, length: Int, key: ByteArray): ByteArray {
+        return this.impl.method_67425(data, offset, length, key) ?: error("MultiMsgCryptor decypt failed: key=${key.toUHexString()}, data=${data.drop(offset).take(length).toByteArray().toUHexString()}")
+    }
+
+    fun decrypt(data: ByteArray, key: ByteArray): ByteArray {
+        return this.impl.method_67426(data, key) ?: error("MultiMsgCryptor decrypt failed: key=${key.toUHexString()}, data=${data.toUHexString()}")
+    }
+
+    fun enableResultRandom(enabled: Boolean) {
+        this.impl.method_67424(enabled)
+    }
+
+    fun encrypt(data: ByteArray, key: ByteArray): ByteArray {
+        return this.impl.method_67427(data, key)
+    }
+}
\ No newline at end of file

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/utils/cryptor/class_1457.kt

+@file:Suppress("NAME_SHADOWING")
+
+package net.mamoe.mirai.qqandroid.utils.cryptor
+
+import kotlinx.io.core.buildPacket
+import kotlinx.io.core.readBytes
+import net.mamoe.mirai.utils.io.toByteArray
+import kotlin.experimental.and
+import kotlin.experimental.xor
+import kotlin.random.Random
+
+// $FF: renamed from: com.tencent.qphone.base.util.b
+internal class class_1457 {
+    // $FF: renamed from: a byte[]
+    private lateinit var field_71278: ByteArray
+
+    // $FF: renamed from: b byte[]
+    private  var field_71279: ByteArray? = null
+
+    // $FF: renamed from: c byte[]
+    private lateinit  var field_71280: ByteArray
+
+    // $FF: renamed from: d int
+    private var field_71281 = 0
+
+    // $FF: renamed from: e int
+    private var field_71282 = 0
+
+    // $FF: renamed from: f int
+    private var field_71283 = 0
+
+    // $FF: renamed from: g int
+    private var field_71284 = 0
+
+    // $FF: renamed from: h byte[]
+    private  var field_71285: ByteArray? = null
+
+    // $FF: renamed from: i boolean
+    private var field_71286 = true
+
+    // $FF: renamed from: j int
+    private var field_71287 = 0
+
+    // $FF: renamed from: k java.util.Random
+    private val field_71288: Random = Random
+
+    // $FF: renamed from: l boolean
+    private var field_71289 = true
+
+    // $FF: renamed from: a () void
+    private fun method_67415() {
+        var var1: Int
+        var var2: ByteArray
+        field_71283 = 0
+        while (field_71283 < 8) {
+            if (field_71286) {
+                var2 = field_71278
+                var1 = field_71283
+                var2[var1] = var2[var1] xor field_71279!![field_71283]
+            } else {
+                var2 = field_71278
+                var1 = field_71283
+                var2[var1] = var2[var1] xor field_71280[field_71282 + field_71283]
+            }
+            ++field_71283
+        }
+        arraycopy(method_67417(field_71278), 0, field_71280, field_71281, 8)
+        field_71283 = 0
+        while (field_71283 < 8) {
+            var2 = field_71280
+            var1 = field_71281 + field_71283
+            var2[var1] = var2[var1] xor field_71279!![field_71283]
+            ++field_71283
+        }
+        arraycopy(field_71278, 0, field_71279!!, 0, 8)
+        field_71282 = field_71281
+        field_71281 += 8
+        field_71283 = 0
+        field_71286 = false
+    }
+
+    // $FF: renamed from: a (int) byte[]
+    private fun method_67416(var1: Int): ByteArray {
+        val var2 = ByteArray(var1)
+        field_71288.nextBytes(var2)
+        return var2
+    }
+
+    // $FF: renamed from: a (byte[]) byte[]
+    private fun method_67417(var1: ByteArray): ByteArray {
+        var var1: ByteArray? = var1
+        var var2 = 16
+        var var5: Long
+        var var7: Long
+        val var9: Long
+        val var11: Long
+        val var13: Long
+        val var15: Long
+        var7 = method_67414(var1, 0, 4)
+        var5 = method_67414(var1, 4, 4)
+        var9 = method_67414(field_71285, 0, 4)
+        var11 = method_67414(field_71285, 4, 4)
+        var13 = method_67414(field_71285, 8, 4)
+        var15 = method_67414(field_71285, 12, 4)
+        var var3 = 0L
+        while (var2 > 0) {
+            var3 = var3 + (-1640531527L and 4294967295L) and 4294967295L
+            var7 = var7 + ((var5 shl 4) + var9 xor var5 + var3 xor (var5 ushr 5) + var11) and 4294967295L
+            var5 = var5 + ((var7 shl 4) + var13 xor var7 + var3 xor (var7 ushr 5) + var15) and 4294967295L
+            --var2
+        }
+        return buildPacket { 
+            writeInt(var7.toInt())
+            writeInt(var5.toInt())
+        }.readBytes()
+    }
+
+    // $FF: renamed from: a (byte[], int) byte[]
+    private fun method_67418(var1: ByteArray?, var2: Int): ByteArray? {
+        var var1 = var1
+        var var2 = var2
+        val var3: Byte = 16
+        var var6: Long
+        var var8: Long
+        val var10: Long
+        val var12: Long
+        val var14: Long
+        val var16: Long
+        var8 = method_67414(var1, var2, 4)
+        var6 = method_67414(var1, var2 + 4, 4)
+        var10 = method_67414(field_71285, 0, 4)
+        var12 = method_67414(field_71285, 4, 4)
+        var14 = method_67414(field_71285, 8, 4)
+        var16 = method_67414(field_71285, 12, 4)
+        var var4 = -478700656L and 4294967295L
+        var2 = var3.toInt()
+        while (var2 > 0) {
+            var6 = var6 - ((var8 shl 4) + var14 xor var8 + var4 xor (var8 ushr 5) + var16) and 4294967295L
+            var8 = var8 - ((var6 shl 4) + var10 xor var6 + var4 xor (var6 ushr 5) + var12) and 4294967295L
+            var4 = var4 - (-1640531527L and 4294967295L) and 4294967295L
+            --var2
+        }
+        return var8.toByteArray() + var6.toByteArray()
+    }
+
+    // $FF: renamed from: a (byte[], byte[], int) byte[]
+    private fun method_67419(var1: ByteArray, var2: ByteArray, var3: Int): ByteArray? {
+        var var1: ByteArray? = var1
+        var var2: ByteArray? = var2
+        var2 = method_67425(var1, 0, var1!!.size, var2)
+        var1 = var2
+        if (var2 == null) {
+            var1 = method_67416(var3)
+        }
+        return var1
+    }
+
+    // $FF: renamed from: b () int
+    private fun method_67420(): Int {
+        return if (field_71289) field_71288.nextInt() else 16711935
+    }
+
+    // $FF: renamed from: b (byte[], int, int) boolean
+    private fun method_67421(var1: ByteArray?, var2: Int, var3: Int): Boolean {
+        field_71283 = 0
+        while (field_71283 < 8) {
+            if (field_71287 + field_71283 >= var3) {
+                return true
+            }
+            val var5 = field_71279
+            val var4 = field_71283
+            var5!![var4] = var5[var4] xor var1!![field_71281 + var2 + field_71283]
+            ++field_71283
+        }
+        field_71279 = method_67422(field_71279)
+        return if (field_71279 == null) {
+            false
+        } else {
+            field_71287 += 8
+            field_71281 += 8
+            field_71283 = 0
+            true
+        }
+    }
+
+    // $FF: renamed from: b (byte[]) byte[]
+    private fun method_67422(var1: ByteArray?): ByteArray? {
+        return method_67418(var1, 0)
+    }
+
+    // $FF: renamed from: b (byte[], int, int, byte[]) byte[]
+    private fun method_67423(var1: ByteArray, var2: Int, var3: Int, var4: ByteArray): ByteArray {
+        var var1 = var1
+        var var2 = var2
+        var var3 = var3
+        var var4 = var4
+        field_71278 = ByteArray(8)
+        field_71279 = ByteArray(8)
+        field_71283 = 1
+        field_71284 = 0
+        field_71282 = 0
+        field_71281 = 0
+        field_71285 = var4
+        field_71286 = true
+        field_71283 = (var3 + 10) % 8
+        if (field_71283 != 0) {
+            field_71283 = 8 - field_71283
+        }
+        field_71280 = ByteArray(field_71283 + var3 + 10)
+        field_71278[0] = (method_67420() and 248 or field_71283).toByte()
+        var var5: Int
+        var5 = 1
+        while (var5 <= field_71283) {
+            field_71278[var5] = (method_67420() and 255).toByte()
+            ++var5
+        }
+        ++field_71283
+        var5 = 0
+        while (var5 < 8) {
+            field_71279!![var5] = 0
+            ++var5
+        }
+        field_71284 = 1
+        while (field_71284 <= 2) {
+            if (field_71283 < 8) {
+                var4 = field_71278
+                var5 = field_71283++
+                var4[var5] = (method_67420() and 255).toByte()
+                ++field_71284
+            }
+            if (field_71283 == 8) {
+                method_67415()
+            }
+        }
+        while (var3 > 0) {
+            if (field_71283 < 8) {
+                var4 = field_71278
+                val var6 = field_71283++
+                var5 = var2 + 1
+                var4[var6] = var1[var2]
+                --var3
+                var2 = var5
+            }
+            if (field_71283 == 8) {
+                method_67415()
+            }
+        }
+        field_71284 = 1
+        while (field_71284 <= 7) {
+            if (field_71283 < 8) {
+                var1 = field_71278
+                var2 = field_71283++
+                var1[var2] = 0
+                ++field_71284
+            }
+            if (field_71283 == 8) {
+                method_67415()
+            }
+        }
+        return field_71280
+    }
+
+    // $FF: renamed from: a (boolean) void
+    fun method_67424(var1: Boolean) {
+        field_71289 = var1
+    }
+
+    // $FF: renamed from: a (byte[], int, int, byte[]) byte[]
+    internal fun method_67425(
+        var1: ByteArray?,
+        var2: Int,
+        var3: Int,
+        var4: ByteArray?
+    ): ByteArray? {
+        var var4 = var4
+        field_71282 = 0
+        field_71281 = 0
+        field_71285 = var4
+        var4 = ByteArray(var2 + 8)
+        return if (var3 % 8 == 0 && var3 >= 16) {
+            field_71279 = method_67418(var1, var2)
+            field_71283 = (field_71279!![0] and 7).toInt()
+            var var6 = var3 - field_71283 - 10
+            if (var6 < 0) {
+                null
+            } else {
+                var var5: Int
+                var5 = var2
+                while (var5 < var4.size) {
+                    var4[var5] = 0
+                    ++var5
+                }
+                field_71280 = ByteArray(var6)
+                field_71282 = 0
+                field_71281 = 8
+                field_71287 = 8
+                ++field_71283
+                field_71284 = 1
+                while (field_71284 <= 2) {
+                    if (field_71283 < 8) {
+                        ++field_71283
+                        ++field_71284
+                    }
+                    if (field_71283 == 8) {
+                        if (!method_67421(var1, var2, var3)) {
+                            return null
+                        }
+                        var4 = var1
+                    }
+                }
+                var5 = 0
+                while (var6 != 0) {
+                    if (field_71283 < 8) {
+                        field_71280[var5] =
+                            (var4!![field_71282 + var2 + field_71283] xor field_71279!![field_71283])
+                        ++var5
+                        ++field_71283
+                        --var6
+                    }
+                    if (field_71283 == 8) {
+                        field_71282 = field_71281 - 8
+                        if (!method_67421(var1, var2, var3)) {
+                            return null
+                        }
+                        var4 = var1
+                    }
+                }
+                field_71284 = 1
+                while (field_71284 < 8) {
+                    if (field_71283 < 8) {
+                        if (var4!![field_71282 + var2 + field_71283] xor field_71279!![field_71283] != 0.toByte()) {
+                            return null
+                        }
+                        ++field_71283
+                    }
+                    if (field_71283 == 8) {
+                        field_71282 = field_71281
+                        if (!method_67421(var1, var2, var3)) {
+                            return null
+                        }
+                        var4 = var1
+                    }
+                    ++field_71284
+                }
+                field_71280
+            }
+        } else {
+            null
+        }
+    }
+
+    // $FF: renamed from: a (byte[], byte[]) byte[]
+    internal fun method_67426(var1: ByteArray, var2: ByteArray?): ByteArray? {
+        return method_67425(var1, 0, var1.size, var2)
+    }
+
+    // $FF: renamed from: b (byte[], byte[]) byte[]
+    internal fun method_67427(var1: ByteArray, var2: ByteArray): ByteArray {
+        return method_67423(var1, 0, var1.size, var2)
+    }
+
+    companion object {
+        // $FF: renamed from: a (byte[], int, int) long
+        private fun method_67414(var0: ByteArray?, var1: Int, var2: Int): Long {
+            var var1 = var1
+            var var2 = var2
+            var var3 = 0L
+            if (var2 > 8) {
+                var2 = var1 + 8
+            } else {
+                var2 += var1
+            }
+            while (var1 < var2) {
+                var3 = var3 shl 8 or (var0!![var1] and 255.toByte()).toLong()
+                ++var1
+            }
+            return 4294967295L and var3 or var3 ushr 32
+        }
+    }
+}
+
+internal expect fun arraycopy(src: ByteArray, srcPos: Int, dest: ByteArray, destPos: Int, length: Int)
\ No newline at end of file

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

+package net.mamoe.mirai.qqandroid.utils.cryptor
+
+internal actual fun arraycopy(
+    src: ByteArray,
+    srcPos: Int,
+    dest: ByteArray,
+    destPos: Int,
+    length: Int
+) = System.arraycopy(src, srcPos, dest, destPos, length)
\ No newline at end of file

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

@@ -13,6 +13,7 @@ import kotlinx.coroutines.Job
 import net.mamoe.mirai.contact.Group
 import net.mamoe.mirai.contact.QQ
 import net.mamoe.mirai.data.*
+import net.mamoe.mirai.message.data.Message
 import net.mamoe.mirai.message.data.MessageSource
 import net.mamoe.mirai.utils.MiraiExperimentalAPI
 import net.mamoe.mirai.utils.MiraiInternalAPI
@@ -139,6 +140,14 @@ interface LowLevelBotAPIAccessor {
     @LowLevelAPI
     @MiraiExperimentalAPI
     suspend fun _lowLevelGetGroupActiveData(groupId: Long): GroupActiveData
+
+    /**
+     * 发送长消息
+     */
+    @SinceMirai("0.31.0")
+    @LowLevelAPI
+    @MiraiExperimentalAPI
+    suspend fun _lowLevelSendLongMessage(groupCode: Long, message: Message)
 }
 
 /**

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/PlainText.kt

@@ -15,7 +15,6 @@ package net.mamoe.mirai.message.data
 
 import kotlin.jvm.JvmMultifileClass
 import kotlin.jvm.JvmName
-import kotlin.jvm.JvmStatic
 import kotlin.jvm.JvmSynthetic
 
 /**
@@ -28,26 +27,13 @@ class PlainText(val stringValue: String) :
     Comparable<String> by stringValue,
     CharSequence by stringValue {
 
+    @Suppress("unused")
     constructor(charSequence: CharSequence) : this(charSequence.toString())
 
     override operator fun contains(sub: String): Boolean = sub in stringValue
     override fun toString(): String = stringValue
 
-    companion object Key : Message.Key<PlainText> {
-        @JvmStatic
-        val Empty = PlainText("")
-
-        @JvmStatic
-        val Null = PlainText("null")
-
-        inline fun of(value: String): PlainText {
-            return PlainText(value)
-        }
-
-        inline fun of(value: CharSequence): PlainText {
-            return PlainText(value)
-        }
-    }
+    companion object Key : Message.Key<PlainText>
 }
 
 /**

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/RichMessage.kt

@@ -33,6 +33,40 @@ interface RichMessage : MessageContent {
     @SinceMirai("0.30.0")
     companion object Templates : Message.Key<RichMessage> {
 
+        /**
+         * 合并转发.
+         */
+        @MiraiExperimentalAPI
+        fun mergedForward(): Nothing {
+            TODO()
+        }
+
+        /**
+         * 长消息.
+         *
+         * @param brief 消息内容纯文本, 显示在图片的前面
+         */
+        @MiraiExperimentalAPI
+        fun longMessage(brief: String, resId: String, time: Long): XmlMessage {
+            val template = """
+<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
+<msg serviceID="35" templateID="1" action="viewMultiMsg"
+     brief="$brief"
+     m_resid="$resId"
+     m_fileName="$time" sourceMsgId="0" url=""
+     flag="3" adverSign="0" multiMsgFlag="1">
+    <item layout="1">
+        <title>$brief…</title>
+        <hr hidden="false" style="0"/>
+        <summary>点击查看完整消息</summary>
+    </item>
+    <source name="聊天记录" icon="" action="" appid="-1"/>
+</msg>
+            """
+
+            return XmlMessage(template)
+        }
+
         @MiraiExperimentalAPI
         @SinceMirai("0.30.0")
         fun share(url: String, title: String? = null, content: String? = null, coverUrl: String? = null): XmlMessage =
@@ -107,6 +141,19 @@ class XmlMessage constructor(override val content: String) : RichMessage {
     override fun toString(): String = content
 }
 
+/**
+ * 合并转发消息
+ */
+@SinceMirai("0.31.0")
+@MiraiExperimentalAPI
+class MergedForwardedMessage(override val content: String) : RichMessage {
+    companion object Key : Message.Key<XmlMessage>
+
+    // serviceId = 35
+    override fun toString(): String = content
+}
+
+
 /**
  * 构造一条 XML 消息
  */