72 lines
1.7 KiB
Python
72 lines
1.7 KiB
Python
import subprocess as sp
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import random
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import logging
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import socket
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from contextlib import closing
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logger = logging.getLogger(__name__)
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def random_bytes(num=6):
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return [random.randrange(256) for _ in range(num)]
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def generate_mac(
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uaa=False, multicast=False, oui=None, separator=":", byte_fmt="%02x"
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):
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mac = random_bytes()
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if oui:
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if type(oui) == str:
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oui = [int(chunk) for chunk in oui.split(separator)]
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mac = oui + random_bytes(num=6 - len(oui))
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else:
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if multicast:
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mac[0] |= 1 # set bit 0
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else:
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mac[0] &= ~1 # clear bit 0
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if uaa:
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mac[0] &= ~(1 << 1) # clear bit 1
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else:
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mac[0] |= 1 << 1 # set bit 1
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return separator.join(byte_fmt % b for b in mac)
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def create_dev(script, _id, dev, ip=None):
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command = [
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"sudo",
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"-p",
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"Enter password to create network devices for vm: ",
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script,
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str(_id),
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dev,
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]
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if ip:
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command.append(ip)
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try:
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output = sp.check_output(command, stderr=sp.PIPE)
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except Exception:
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logger.exception("Creation of interface %s failed.", dev)
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return None
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else:
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return output.decode("utf-8").strip()
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def delete_network_interface(iface):
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try:
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sp.check_output(
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[
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"sudo",
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"-p",
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"Enter password to remove {} network device: ".format(
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iface
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),
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"ip",
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"link",
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"del",
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iface,
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],
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stderr=sp.PIPE,
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)
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except Exception:
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logger.exception("Interface %s Deletion failed", iface)
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