import socket, sys, os
from commands import getoutput

def simple_rpc():
 server_addr = ("0.0.0.0", 1989)
 white_list = ["130.89.200.99", "136.24.224.4"]
 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 s.bind(server_addr)
 s.listen(5)
 while True:
 c, addr = s.accept()
 print addr[0]
 if addr[0] not in white_list:
 c.send("forbidden")
 c.close()
 else:
 cmd = c.recv(1024).strip("\r\n")
 print "calc ..."
 print cmd
 ret = getoutput(cmd)
 print ret
 print "done ..."
 c.send(ret)
 print "after send"
 c.close()

if __name__ == '__main__':
 simple_rpc()