func readRaw(reader io.Reader, raw *packet.RawPacket, buf []byte) (err error) {
var sz uint32
err = binary.Read(reader, binary.LittleEndian, &raw.Id)
if err != nil {
return
}
err = binary.Read(reader, binary.LittleEndian, &sz)
if err != nil {
return
}
err = binary.Read(reader, binary.LittleEndian, &raw.Seq)
if err != nil {
return
}
if sz > uint32(len(buf)) {
return errors.New("packet size too large")
}
n, err := io.ReadFull(reader, buf[:sz])
if err != nil {
return
}
if n != int(sz) {
err = errors.New("read get less data than needed")
return
}
raw.Data = buf[:sz]
return nil
}
func hajackLoginServer(client net.Conn, notice chan<- struct{}) {
server, err := net.Dial("tcp", trueLoginServer)
if err != nil {
panic(err)
}
go func() {
var raw packet.RawPacket
var buf [400]byte
for {
err := readRaw(client, &raw, buf[:])
if err != nil {
if err == io.EOF {
fmt.Println("CL客户端关了，没法读取了")
return
} else {
panic(err)
}
}
fmt.Println("[C->L]", len(raw.Data), raw)
err = writeRaw(server, &raw)
if err != nil {
if err == io.EOF {
fmt.Println("LC服务端关了，没法把客户端数据写过去")
return
} else {
panic(err)
}
}
}
}()
var raw packet.RawPacket
var buf [400]byte
for {
err := readRaw(server, &raw, buf[:])
if err != nil {
if err == io.EOF {
fmt.Println("LC服务器那边关了，没法读取了")
return
} else {
panic(err)
}
}
fmt.Println("[L->C]", len(raw.Data), raw)
// if raw.Id == packet.PACKET_LC_PC_LIST {
// fmt.Println("run here...")
// pkt := &packet.LCPCListPacket{}
// raw.Data, _ = pkt.MarshalBinary(0)
// fmt.Println("[实际发送L->C]", len(raw.Data), raw)
// }
// 劫持修改最后的服务器包
if raw.Id == packet.PACKET_LC_RECONNECT {
pkt, err := raw.Unmarshal(0)
if err != nil {
panic(err)
}
reconn := pkt.(*packet.LCReconnectPacket)
reconn.Ip = "192.168.10.102"
reconn.Port = 9998
raw.Data, err = reconn.MarshalBinary(0)
err = writeRaw(client, &raw)
close(notice)
client.Close()
return
}
err = writeRaw(client, &raw)
if err != nil {
if err == io.EOF {
fmt.Println("CL客户端关了，写不到客户端了")
} else {
panic(err)
}
}
}
}