#!/usr/bin/env python3

import getpass
import ipaddress
import subprocess

pingcommand = 'ping -c 1 -w 1 %s'
sledcommand = 'ipmitool -H %s -U %s -P %s -I lanplus raw 0x30 0xe1 %d'

def run(command):
    cmd = command.split(' ')
    output = subprocess.run(cmd, stdout=subprocess.PIPE)
    return output.stdout.decode()

userid = input('Enter BMC userid: ')
password = getpass.getpass('Enter BMC password: ')
subnet = input('Enter BMC subnet: ')
n = ipaddress.IPv4Network(subnet)
summary = ''

for host in [str(h) for h in n.hosts()]:
    if '0% packet loss' in run(pingcommand % host):
        print('Sending IPMI to', host, '       (15 second timeout if host does not respond)')
        try:
            sledid = 0
            bitposition = 0
            for i in [123, 124, 125]: # Magic numbers to retrieve sled position as three single bits
               bit =  run(sledcommand % (host, userid, password, i)).split(' ')[2]
               sledid += int(bit) * 2**bitposition
               bitposition += 1
            summary += 'Host %s is in sled position: %d\n' % (host,sledid)
        except:
            continue
print(summary)