Parse anonymous chat, close #277

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

@@ -28,10 +28,12 @@ import net.mamoe.mirai.qqandroid.message.MessageSourceToGroupImpl
 import net.mamoe.mirai.qqandroid.message.ensureSequenceIdAvailable
 import net.mamoe.mirai.qqandroid.message.firstIsInstanceOrNull
 import net.mamoe.mirai.qqandroid.network.highway.HighwayHelper
+import net.mamoe.mirai.qqandroid.network.protocol.data.proto.ImMsgBody
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.TroopManagement
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.image.ImgStore
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.receive.MessageSvc
 import net.mamoe.mirai.qqandroid.network.protocol.packet.list.ProfileService
+import net.mamoe.mirai.qqandroid.utils.encodeToString
 import net.mamoe.mirai.qqandroid.utils.estimateLength
 import net.mamoe.mirai.utils.*
 import kotlin.contracts.ExperimentalContracts
@@ -252,6 +254,16 @@ internal class GroupImpl(
         )
     }
 
+    internal fun newAnonymous(name: String): Member = newMember(
+        object : MemberInfo {
+            override val nameCard = name
+            override val permission = MemberPermission.MEMBER
+            override val specialTitle = "匿名"
+            override val muteTimestamp = 0
+            override val uin = 80000000L
+            override val nick = name
+        }
+    )
 
     override operator fun get(id: Long): Member {
         if (id == bot.id) {

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

@@ -12,18 +12,23 @@
 package net.mamoe.mirai.qqandroid.message
 
 import net.mamoe.mirai.Bot
+import net.mamoe.mirai.LowLevelAPI
 import net.mamoe.mirai.contact.Friend
 import net.mamoe.mirai.contact.Member
+import net.mamoe.mirai.contact.MemberPermission
+import net.mamoe.mirai.data.MemberInfo
 import net.mamoe.mirai.event.internal.MiraiAtomicBoolean
 import net.mamoe.mirai.message.data.Message
 import net.mamoe.mirai.message.data.MessageChain
 import net.mamoe.mirai.message.data.MessageSource
 import net.mamoe.mirai.message.data.OnlineMessageSource
+import net.mamoe.mirai.qqandroid.contact.GroupImpl
 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.SourceMsg
 import net.mamoe.mirai.qqandroid.network.protocol.packet.EMPTY_BYTE_ARRAY
 import net.mamoe.mirai.qqandroid.utils._miraiContentToString
+import net.mamoe.mirai.qqandroid.utils.encodeToString
 import net.mamoe.mirai.qqandroid.utils.io.serialization.toByteArray
 
 internal interface MessageSourceInternal {
@@ -141,13 +146,19 @@ internal data class MessageSourceFromGroupImpl(
     override val originalMessage: MessageChain by lazy {
         msg.toMessageChain(bot, groupIdOrZero = group.id, onlineSource = false)
     }
-    override val sender: Member
+
-        get() = bot.getGroup(
+    override val sender: Member by lazy {
+        (bot.getGroup(
             msg.msgHead.groupInfo?.groupCode
                 ?: error("cannot find groupCode for MessageSourceFromGroupImpl. msg=${msg._miraiContentToString()}")
-        ).getOrNull(msg.msgHead.fromUin)
+        ) as GroupImpl).run {
+            getOrNull(msg.msgHead.fromUin)
+                ?: msg.msgBody.richText.elems.firstOrNull { it.anonGroupMsg != null }?.run {
+                    newAnonymous(anonGroupMsg!!.anonNick.encodeToString())
+                }
                 ?: error("cannot find member for MessageSourceFromGroupImpl. msg=${msg._miraiContentToString()}")
-
+        }
+    }
 
     override fun toJceData(): ImMsgBody.SourceMsg {
         return ImMsgBody.SourceMsg(

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

@@ -69,9 +69,6 @@ internal class OnlinePush {
             if (!bot.firstLoginSucceed) return null
             val pbPushMsg = readProtoBuf(MsgOnlinePush.PbPushMsg.serializer())
 
-            val extraInfo: ImMsgBody.ExtraInfo? =
-                pbPushMsg.msg.msgBody.richText.elems.firstOrNull { it.extraInfo != null }?.extraInfo
-
             if (pbPushMsg.msg.msgHead.fromUin == bot.id) {
                 return SendGroupMessageReceipt(
                     pbPushMsg.msg.msgBody.richText.attr!!.random,
@@ -79,9 +76,22 @@ internal class OnlinePush {
                 )
             }
 
-            val group = bot.getGroupOrNull(pbPushMsg.msg.msgHead.groupInfo!!.groupCode) ?: return null // 机器人还正在进群
+            val extraInfo: ImMsgBody.ExtraInfo? =
-            val sender = group[pbPushMsg.msg.msgHead.fromUin] as MemberImpl
+                pbPushMsg.msg.msgBody.richText.elems.firstOrNull { it.extraInfo != null }?.extraInfo
-            val name = extraInfo?.groupCard?.takeIf { it.isNotEmpty() }?.run {
+
+            val anonymous = pbPushMsg.msg.msgBody.richText.elems.firstOrNull { it.anonGroupMsg != null }?.anonGroupMsg
+
+            val group = bot.getGroupOrNull(pbPushMsg.msg.msgHead.groupInfo!!.groupCode) as GroupImpl ?: return null // 机器人还正在进群
+            val sender = if (anonymous != null) {
+                group.newAnonymous(anonymous.anonNick.encodeToString())
+            } else {
+                group[pbPushMsg.msg.msgHead.fromUin]
+            } as MemberImpl
+
+            val name = if (anonymous != null) {
+                sender.nameCard
+            } else {
+                extraInfo?.groupCard?.takeIf { it.isNotEmpty() }?.run {
                     kotlin.runCatching {
                         if (this[0] == 0x0A.toByte())
                             loadAs(Oidb0x8fc.CommCardNameBuf.serializer()).richCardName?.joinToString("") { it.text.encodeToString() }
@@ -89,6 +99,7 @@ internal class OnlinePush {
                     }.getOrNull() ?: encodeToString()
                 } ?: pbPushMsg.msg.msgHead.groupInfo.groupCard.takeIf { it.isNotEmpty() }
                 ?: sender.nameCardOrNick // 没有 extraInfo 就从 head 里取
+            }
 
             val flags = extraInfo?.flags ?: 0
             return GroupMessage(