# Author- RIZWAN AHMAD 

# Simple python Script to change mac address of linux generate random or enter mac address






import random,os,base64
from subprocess import PIPE, Popen
#function for returning terminal command 
def cret(command):
    process = Popen(
        args=command,
        stdout=PIPE,
        shell=True
    )
    return process.communicate()[0]

#function for genrate mac address random
def randmac():
    return [ 0x00, 0x16, 0x3e,
        random.randint(0x00, 0x7f),
        random.randint(0x00, 0xff),
        random.randint(0x00, 0xff) ]

def retrandmac(mac):
 return ':'.join(map(lambda x: "%02x" % x, mac))





print("                                             +-+-+-+ +-+-+-+-+-+-+-+")
print("                                             |M|A|C| |c|h|a|n|g|e|r|")
print("                                             +-+-+-+ +-+-+-+-+-+-+-+")
#finding wireless interface name that should start with wl e.g.-wlan0,wlp3s0
infname=cret('ifconfig -a  | egrep "^[wl-wl]+" | sed "s/: .*//" | grep -v "lo"')
#INTERFACE NAME 6 character so return 6 last character
infname=infname[:6]
infname=infname.decode('utf-8')
#GETTING MAC Address from /sys/class/net/wlan0/address directory
cmdgetmac=('cat /sys/class/net/'+infname+'/address')
crrntmac=cret("cat /sys/class/net/"+infname+"/address")
crrntmac=crrntmac.decode('utf-8')
print("Your Current mac address = "+crrntmac+"\nEnter Option to change Your MAC:\n1. Enter MAC address manually \n2. Automatic Random MAC address")
opt=int(input())



if opt==1:
 print("Please Enter Your New MAC address: \nExmple:  46:d2:f4:0c:2a:50")

 newmac=input()
 print("Please wait changing  mac address..................")
 
 
 #first turn off wifi    
 cret('nmcli radio wifi off')

 changemaccmd="sudo ip link set dev "+infname+" address "+newmac
#executing command with new mac address
 cret(changemaccmd)
#turning on wifi
 cret('nmcli radio wifi on')
#GETTING MAC Address from /sys/class/net/wlan0/address directory
 cr=cret("cat /sys/class/net/"+infname+"/address")
 cr=cr.decode('utf-8')


 print("\nNow Your Current mac address = "+cr)


elif opt==2:
 genmac=retrandmac(randmac())
 print("Please wait generating new mac address.....................")
 cret('nmcli radio wifi off')
 changemaccmd="sudo ip link set dev "+infname+" address "+genmac
 cret(changemaccmd)
 cret('nmcli radio wifi on')
 cr=cret("cat /sys/class/net/"+infname+"/address")
 cr=cr.decode('utf-8')
 print("Now Your Current mac address = "+cr)

else:
 print("You Have Selected wrong Option")