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import os
#import json
import socket
import sys
import time
import binascii
import struct
class SocketOverlay(object):
def __init__(self, socket):
self.socket = socket
def recv(self):
li = self.socket.recv(4)
l = struct.unpack("I", li)[0]
return self.socket.recv(l)
def send(self, data):
l = len(data)
self.socket.send(struct.pack("I", l))
self.socket.send(data)
def close(self):
self.socket.close()
class Command(object):
CMD_GET = 1
CMD_CLEAR = 2
CMD_SHUTDOWN = 3
CMD_GET_CLEAR = 4
CMD_INFO = 5
CMD_PAUSE = 6
CMD_RESUME = 7
def __init__(self):
self.uCommand = 0
self.uData = None
def serialise(self):
if self.uData==None:
return struct.pack("I", self.uCommand)+struct.pack("I", 0)
else:
return struct.pack("I", self.uCommand)+struct.pack("I", len(self.uData))+self.uData
@classmethod
def build(cls, command, data=None):
c = Command()
c.uCommand = command
c.uData = data
return c
@classmethod
def unserialise(cls, data):
cmd = struct.unpack("I", data[:4])[0]
ds = struct.unpack("I", data[4:8])[0]
if ds<1:
return Command.build(cmd)
else:
return Command.build(cmd, data[8:8+ds])