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| 1 | #!/usr/bin/python | |
| 2 | import sys | |
| 3 | if sys.version_info<(2,6,0): | |
| 4 | print "Python 2.6 or higher required" | |
| 5 | sys.exit() | |
| 6 | ||
| 7 | if len(sys.argv)!=2: | |
| 8 | print "Usage: mcastmac.py <MCAST IP ADDRESS>" | |
| 9 | sys.exit() | |
| 10 | ipoctets=sys.argv[1].rsplit(".")
| |
| 11 | ||
| 12 | if int(ipoctets[0])<224 or int(ipoctets[0])>239 or int(ipoctets[1])>255 or int(ipoctets[2])>255 or int(ipoctets[3])>255: | |
| 13 | - | if int(octet,10)>255: |
| 13 | + | print "Not valid multicast IP address" |
| 14 | - | print "IP octet",octetnumber,"is bigger than 255" |
| 14 | + | |
| 15 | - | sys.exit() |
| 15 | + | |
| 16 | def oct2hex(octet,octetnumber): | |
| 17 | if octetnumber==3 or octetnumber==4: | |
| 18 | if int(octet)<=15: | |
| 19 | macoctet="0"+hex(int(octet)).lstrip("0x")
| |
| 20 | else: | |
| 21 | macoctet=hex(int(octet)).lstrip("0x")
| |
| 22 | if octetnumber==2: | |
| 23 | if int(octet)<=15: | |
| 24 | macoctet="0"+hex(int(octet)).lstrip("0x")
| |
| 25 | elif int(octet)>15 and int(octet)<128: | |
| 26 | macoctet=hex(int(octet)).lstrip("0x")
| |
| 27 | else: | |
| 28 | macoctet=hex(int(bin(int(octet))[-7:],2)).lstrip("0x")
| |
| 29 | if len(macoctet)!=2: | |
| 30 | macoctet="0"+macoctet | |
| 31 | ||
| 32 | return macoctet | |
| 33 | ||
| 34 | macoctet4=oct2hex(ipoctets[1],2) | |
| 35 | macoctet5=oct2hex(ipoctets[2],3) | |
| 36 | macoctet6=oct2hex(ipoctets[3],4) | |
| 37 | ||
| 38 | print sys.argv[1], "01:00:5e:"+macoctet4+":"+macoctet5+":"+macoctet6 |
