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| -rw-r--r-- | ryu/lib/ip.py | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/ryu/lib/ip.py b/ryu/lib/ip.py index 4db69cc2..c4094b9a 100644 --- a/ryu/lib/ip.py +++ b/ryu/lib/ip.py @@ -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. |