WOL之python实现

#!/usr/bin/env python
# Wake on Lan 

import socket
import struct

def wake_on_lan(mac):
    """ Switches on remote computers using WOL. """
    # Check mac format and try to compensate.
    if len(mac) == 12:
        pass
    elif len(mac) == 12 + 5:
        sep = mac[2]
        mac = mac.replace(sep, '')
    else:
        raise ValueError('Incorrect MAC address format')

    # Pad the synchronization stream.
    data = ''.join(['FFFFFFFFFFFF', mac * 16])
    send_data = ''
    print data

    # Split up the hex values and pack.
    for i in range(0, len(data), 2):
        send_data = ''.join([send_data, struct.pack('B', int(data[i: i + 2], 16))])

    # Broadcast it to the LAN.
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    # 今天发现在某些机器上脚本能正常使用，有些机器却不行，经查发现有问题的机器都配有多个IP，那么在这种情况下，可以bind到特定网段上发包。
    sock.bind(('192.168.102.250', 20000))
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    sock.sendto(send_data, ('<broadcast>', 7))

if __name__ == '__main__':
    # Use maces with any seperators.
    wake_on_lan('00:1F:16:15:53:84')
    wake_on_lan('00-1F-16-15-4D-CD')
    wake_on_lan('00:22:68:1B:7A:82')
    wake_on_lan('00:1B:38:02:D9:F4')