76 lines
2.5 KiB
Python
76 lines
2.5 KiB
Python
|
from .packet import Packet
|
||
|
|
import random
|
||
|
|
|
||
|
|
|
||
|
|
class CFrame:
|
||
|
|
PACKET_COMMAND_FRAME = 0x80
|
||
|
|
PACKET_COMMAND_POLL = 0x08
|
||
|
|
FRAME_EXOPCODE_CONNECT = 0x01
|
||
|
|
FRAME_EXOPCODE_CONNECTED = 0x02
|
||
|
|
FRAME_EXOPCODE_CONNECTED_SIGNED = 0x03
|
||
|
|
FRAME_EXOPCODE_HARD_DISCONNECT = 0x04
|
||
|
|
FRAME_EXOPCODE_SACK = 0x06
|
||
|
|
|
||
|
|
SACK_FLAGS_RESPONSE = 0x01
|
||
|
|
SACK_FLAGS_SACK_MASK1 = 0x02
|
||
|
|
SACK_FLAGS_SACK_MASK2 = 0x04
|
||
|
|
SACK_FLAGS_SEND_MASK1 = 0x08
|
||
|
|
SACK_FLAGS_SEND_MASK2 = 0x10
|
||
|
|
|
||
|
|
def __init__(self, packet=None):
|
||
|
|
self.Command = CFrame.PACKET_COMMAND_FRAME | CFrame.PACKET_COMMAND_POLL
|
||
|
|
self.ExtOpCode = CFrame.FRAME_EXOPCODE_CONNECT
|
||
|
|
self.MsgID = 0
|
||
|
|
self.RspId = 0
|
||
|
|
self.Flags = 1
|
||
|
|
self.Retry = 0
|
||
|
|
self.NSeq = 0
|
||
|
|
self.NRecv = 0
|
||
|
|
self.CurrentProtocolVersion = 0x00010006
|
||
|
|
self.SessID = random.getrandbits(32)
|
||
|
|
self.Timestamp = random.getrandbits(32)
|
||
|
|
|
||
|
|
if packet:
|
||
|
|
self.parse(packet)
|
||
|
|
|
||
|
|
def parse(self, packet):
|
||
|
|
packet.seek(0)
|
||
|
|
self.Command = packet.getByte()
|
||
|
|
self.ExtOpCode = packet.getByte()
|
||
|
|
if self.ExtOpCode == CFrame.FRAME_EXOPCODE_CONNECTED_SIGNED:
|
||
|
|
raise Exception("CONNECTED_SIGNED is not implemented")
|
||
|
|
if self.ExtOpCode == CFrame.FRAME_EXOPCODE_SACK:
|
||
|
|
self.Flags = packet.getByte()
|
||
|
|
self.Retry = packet.getByte()
|
||
|
|
self.NSeq = packet.getByte()
|
||
|
|
self.NRecv = packet.getByte()
|
||
|
|
packet.getByte() # padding
|
||
|
|
packet.getByte() # padding
|
||
|
|
self.Timestamp = packet.getULong()
|
||
|
|
else:
|
||
|
|
self.MsgID = packet.getByte()
|
||
|
|
self.RspId = packet.getByte()
|
||
|
|
self.CurrentProtocolVersion = packet.getLong()
|
||
|
|
self.SessID = packet.getLong()
|
||
|
|
self.Timestamp = packet.getULong()
|
||
|
|
|
||
|
|
def to_packet(self):
|
||
|
|
packet = Packet()
|
||
|
|
packet.putByte(self.Command)
|
||
|
|
packet.putByte(self.ExtOpCode)
|
||
|
|
if self.ExtOpCode == CFrame.FRAME_EXOPCODE_SACK:
|
||
|
|
packet.putByte(self.Flags)
|
||
|
|
packet.putByte(self.Retry)
|
||
|
|
packet.putByte(self.NSeq)
|
||
|
|
packet.putByte(self.NRecv)
|
||
|
|
packet.putByte(0) # padding
|
||
|
|
packet.putByte(0) # padding
|
||
|
|
packet.putULong(self.Timestamp)
|
||
|
|
else:
|
||
|
|
packet.putByte(self.MsgID)
|
||
|
|
packet.putByte(self.RspId)
|
||
|
|
packet.putLong(self.CurrentProtocolVersion)
|
||
|
|
packet.putLong(self.SessID)
|
||
|
|
packet.putULong(self.Timestamp)
|
||
|
|
return packet
|