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 testIp2Int(self):
from Exscript.util.ipv4 import ip2int
self.assertEqual(ip2int('0.0.0.0'), 0x00000000)
self.assertEqual(ip2int('255.255.255.255'), 0xFFFFFFFF)
self.assertEqual(ip2int('255.255.255.0'), 0xFFFFFF00)
self.assertEqual(ip2int('0.255.255.0'), 0x00FFFF00)
self.assertEqual(ip2int('0.128.255.0'), 0x0080FF00)
def testIp2Int(self):
from Exscript.util.ipv4 import ip2int
self.assertEqual(ip2int('0.0.0.0'), 0x00000000l)
self.assertEqual(ip2int('255.255.255.255'), 0xFFFFFFFFl)
self.assertEqual(ip2int('255.255.255.0'), 0xFFFFFF00l)
self.assertEqual(ip2int('0.255.255.0'), 0x00FFFF00l)
self.assertEqual(ip2int('0.128.255.0'), 0x0080FF00l)
def mask(scope, ips, mask):
"""
Applies the given IP mask (e.g. 255.255.255.0) to the given IP address
(or list of IP addresses) and returns it.
:type ips: string
:param ips: A prefix, or a list of IP prefixes.
:type mask: string
:param mask: An IP mask.
:rtype: string
:return: The network(s) that result(s) from applying the mask.
"""
mask = ipv4.ip2int(mask[0])
return [ipv4.int2ip(ipv4.ip2int(ip) & mask) for ip in ips]
def mask(scope, ips, mask):
"""
Applies the given IP mask (e.g. 255.255.255.0) to the given IP address
(or list of IP addresses) and returns it.
@type ips: string
@param ips: A prefix, or a list of IP prefixes.
@type mask: string
@param mask: An IP mask.
@rtype: string
@return: The network(s) that result(s) from applying the mask.
"""
mask = ipv4.ip2int(mask[0])
return [ipv4.int2ip(ipv4.ip2int(ip) & mask) for ip in ips]
def testInt2Ip(self):
from Exscript.util.ipv4 import int2ip, ip2int
for ip in ('0.0.0.0',
'255.255.255.255',
'255.255.255.0',
'0.255.255.0',
'0.128.255.0'):
self.assertEqual(int2ip(ip2int(ip)), ip)
def pfxmask(scope, ips, pfxlen):
"""
Applies the given prefix length to the given ips, resulting in a
(list of) IP network addresses.
:type ips: string
:param ips: An IP address, or a list of IP addresses.
:type pfxlen: int
:param pfxlen: An IP prefix length.
:rtype: string
:return: The mask(s) that result(s) from converting the prefix length.
"""
mask = ipv4.pfxlen2mask_int(pfxlen[0])
return [ipv4.int2ip(ipv4.ip2int(ip) & mask) for ip in ips]
def pfxmask(scope, ips, pfxlen):
"""
Applies the given prefix length to the given ips, resulting in a
(list of) IP network addresses.
@type ips: string
@param ips: An IP address, or a list of IP addresses.
@type pfxlen: int
@param pfxlen: An IP prefix length.
@rtype: string
@return: The mask(s) that result(s) from converting the prefix length.
"""
mask = ipv4.pfxlen2mask_int(pfxlen[0])
return [ipv4.int2ip(ipv4.ip2int(ip) & mask) for ip in ips]
def testInt2Ip(self):
from Exscript.util.ipv4 import int2ip, ip2int
for ip in ('0.0.0.0', '255.255.255.255', '255.255.255.0',
'0.255.255.0', '0.128.255.0'):
self.assertEqual(int2ip(ip2int(ip)), ip)
