openstack/os-ken
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lib/ip: Add wrapper for netaddr.valid_ipv4/6

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Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
IWASE Yusuke 2017-02-13 09:45:26 +09:00 committed by FUJITA Tomonori
parent 15a12a7a6a
commit 88aaba68bb
1 changed files with 40 additions and 0 deletions
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40
ryu/lib/ip.py
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@ -16,10 +16,50 @@
import numbers
import struct
import netaddr
from ryu.lib import addrconv
from ryu.lib import type_desc
def _valid_ip(strategy, bits, addr, flags=0):
addr = addr.split('/')
if len(addr) == 1:
return strategy(addr[0], flags)
elif len(addr) == 2:
return strategy(addr[0], flags) and 0 <= int(addr[1]) <= bits
else:
return False
def valid_ipv4(addr, flags=0):
"""
Wrapper function of "netaddr.valid_ipv4()".
The function extends "netaddr.valid_ipv4()" to enable to validate
IPv4 network address in "xxx.xxx.xxx.xxx/xx" format.
:param addr: IP address to be validated.
:param flags: See the "netaddr.valid_ipv4()" docs for details.
:return: True is valid. False otherwise.
"""
return _valid_ip(netaddr.valid_ipv4, 32, addr, flags)
def valid_ipv6(addr, flags=0):
"""
Wrapper function of "netaddr.valid_ipv6()".
The function extends "netaddr.valid_ipv6()" to enable to validate
IPv4 network address in "xxxx:xxxx:xxxx::/xx" format.
:param addr: IP address to be validated.
:param flags: See the "netaddr.valid_ipv6()" docs for details.
:return: True is valid. False otherwise.
"""
return _valid_ip(netaddr.valid_ipv6, 128, addr, flags)
def ipv4_to_bin(ip):
"""
Converts human readable IPv4 string to binary representation.