fix t119 panic.

client/c2c_processor.go

@@ -11,7 +11,6 @@ import (
 	"google.golang.org/protobuf/proto"
 )
 
-// com.tencent.mobileqq.app.QQMessageFacadeConfig::start
 var c2cDecoders = map[int32]func(*QQClient, *msg.Message){
 	33: troopAddMemberBroadcastDecoder,
 	35: troopSystemMessageDecoder, 36: troopSystemMessageDecoder, 37: troopSystemMessageDecoder,

client/group_file.go

@@ -4,6 +4,7 @@ import (
 	"crypto/sha1"
 	"encoding/hex"
 	"fmt"
+	"google.golang.org/protobuf/proto"
 	"io"
 	"math/rand"
 	"os"
@@ -13,7 +14,6 @@ import (
 	"github.com/Mrs4s/MiraiGo/client/pb/oidb"
 	"github.com/Mrs4s/MiraiGo/protocol/packets"
 	"github.com/Mrs4s/MiraiGo/utils"
-	"github.com/golang/protobuf/proto"
 	"github.com/pkg/errors"
 )
 

client/tlv_decoders.go

@@ -104,9 +104,11 @@ func (c *QQClient) decodeT119(data []byte) {
 	}
 	key := md5.Sum(append(append(c.PasswordMd5[:], []byte{0x00, 0x00, 0x00, 0x00}...), binary.NewWriterF(func(w *binary.Writer) { w.WriteUInt32(uint32(c.Uin)) })...))
 	decrypted := binary.NewTeaCipher(key[:]).Decrypt(c.sigInfo.encryptedA1)
+	if len(decrypted) > 51+16 {
 		dr := binary.NewReader(decrypted)
 		dr.ReadBytes(51)
 		SystemDeviceInfo.TgtgtKey = dr.ReadBytes(16)
+	}
 	c.Nickname = nick
 	c.Age = age
 	c.Gender = gender