def logtest():
for xdgstrict in True,False:
log('xdgstrict %s' % xdgstrict)
u = UserDirs(xdgstrict)
for var in vartypes:
log(getattr(u,var)())
for testpath in testpaths:
log(u.dir(*testpath))
class Main(object):
'''Class encapsulating main application logic.'''
def __init__(self,prog,*argv):
'''
Pass the main program name (argv[0]) and the rest of the
command-line arguments.
'''
self.prog = os.path.basename(prog)
descr = ('Generates a random and correctly-formatted MAC address. '
'The last three octets are always random.')
parser = ArgumentParser(prog=self.prog,description=descr)
parser.add_argument('-n','--no-oui',dest='use_oui',action='store_false',
default=True,help="don't use an organizationally unique identifier")
parser.add_argument('-l','--local',action='store_true',
default=False,help='enable locally administered bit in first octet; '
'if OUIs are being used, this bit is necessarily off')
parser.add_argument('-s','--no-separator',dest='use_separator',
action='store_false',default=True,help='disable : octet separator')
parser.add_argument('-v','--verbose',action='store_true',default=False,
help='enable debug output to standard error')
parser.add_argument('-r','--raw',action='store_true',default=False,
help='output raw OUI bytes; implies -s')
self.args = parser.parse_args(argv)
util.enablelog = self.args.verbose
self.userdirs = UserDirs()
def varpath(self):
'''Path to var dir for locally-cached data.'''
return self.userdirs.dir('var','cache',self.prog)
def run(self):
'''Run main application logic.'''
if self.args.use_oui:
name,oui = OuiMgr(self.varpath()).choose()
util.log('chose an oui from %s' % name)
else:
oui = util.randbytes(3)
if self.args.local: oui[0] |= 2
else: oui[0] &= 0xfd
mac = list(oui) + util.randbytes(3)
if self.args.raw:
sys.stdout.write(struct.pack('>BBBBBB',*mac))
else:
sep = ':' if self.args.use_separator else ''
print(sep.join('%02x' % x for x in mac))