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#!/usr/bin/python
import subprocess,re,logging,sys
from arping import arpingy
from multiprocessing import Pool
DEV='eth0'
MAC_NAMES='mac_names.lst'
data = []
ret = {}
verb = False
if len(sys.argv) > 1 and sys.argv[1] == 'v':
verb = True
def get_own_addr():
data = subprocess.Popen(['/sbin/ifconfig',DEV],
stdout=subprocess.PIPE).communicate()[0].replace('\n','')
return re.sub(r'.*HWaddr ([0-9A-Fa-f:]*).*inet addr:([0-9.]*).*' ,
r'\1 \2',data).split()
def load_names(MAC_NAMES):
names = {}
f = open(MAC_NAMES)
for l in f:
mac,name = l.split()
names[mac] = name.replace('\n','')
f.close()
return names
def arping_helper(dic):
return arpingy(**dic)
for first in range(4):
for second in range(255):
data.append({'iprange':'10.42.'+str(first)+'.'+str(second),'iface':DEV})
names = load_names(MAC_NAMES)
try:
p = Pool(20)
ret = filter(lambda x:x , p.map(arping_helper, data))
myip,mymac = get_own_addr()
ret.append([mymac,myip])
p.terminate()
except Exception as e:
print 'you fail '+str(e)
for p in ret:
if verb:
print p[0] + " => " + p[1]
if p[1] in names:
print names[p[1]]+ " is online"
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