def in_network(scope, prefixes, destination, default_pfxlen=[24]):
"""
Returns True if the given destination is in the network range that is
defined by the given prefix (e.g. 10.0.0.1/22). If the given prefix
does not have a prefix length specified, the given default prefix length
is applied. If no such prefix length is given, the default length is
/24.
If a list of prefixes is passed, this function returns True only if
the given destination is in ANY of the given prefixes.
:type prefixes: string
:param prefixes: A prefix, or a list of IP prefixes.
:type destination: string
:param destination: An IP address.
:type default_pfxlen: int
:param default_pfxlen: The default prefix length.
:rtype: True
:return: Whether the given destination is in the given network.
"""
needle = ipv4.ip2int(destination[0])
for prefix in prefixes:
network, pfxlen = ipv4.parse_prefix(prefix, default_pfxlen[0])
mask = ipv4.pfxlen2mask_int(pfxlen)
if needle & mask == ipv4.ip2int(network) & mask:
return [True]
return [False]
def in_network(scope, prefixes, destination, default_pfxlen = [24]):
"""
Returns True if the given destination is in the network range that is
defined by the given prefix (e.g. 10.0.0.1/22). If the given prefix
does not have a prefix length specified, the given default prefix length
is applied. If no such prefix length is given, the default length is
/24.
If a list of prefixes is passed, this function returns True only if
the given destination is in ANY of the given prefixes.
@type prefixes: string
@param prefixes: A prefix, or a list of IP prefixes.
@type destination: string
@param destination: An IP address.
@type default_pfxlen: int
@param default_pfxlen: The default prefix length.
@rtype: True
@return: Whether the given destination is in the given network.
"""
needle = ipv4.ip2int(destination[0])
for prefix in prefixes:
network, pfxlen = ipv4.parse_prefix(prefix, default_pfxlen[0])
mask = ipv4.pfxlen2mask_int(pfxlen)
if needle & mask == ipv4.ip2int(network) & mask:
return [True]
return [False]
def testParsePrefix(self):
from Exscript.util.ipv4 import parse_prefix
self.assertEqual(('1.2.3.4', 24), parse_prefix('1.2.3.4'))
self.assertEqual(('1.2.3.4', 32), parse_prefix('1.2.3.4', 32))
self.assertEqual(('1.2.3.4', 15), parse_prefix('1.2.3.4/15'))
self.assertEqual(('1.2.3.4', 15), parse_prefix('1.2.3.4/15', 32))
def testParsePrefix(self):
from Exscript.util.ipv4 import parse_prefix
self.assertEqual(('1.2.3.4', 24), parse_prefix('1.2.3.4'))
self.assertEqual(('1.2.3.4', 32), parse_prefix('1.2.3.4', 32))
self.assertEqual(('1.2.3.4', 15), parse_prefix('1.2.3.4/15'))
self.assertEqual(('1.2.3.4', 15), parse_prefix('1.2.3.4/15', 32))
