lib/ip: Add wrapper for netaddr.valid_ipv4/6
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.
