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- ##########################################################################
- #
- # pgAdmin 4 - PostgreSQL Tools
- #
- # Copyright (C) 2013 - 2020, The pgAdmin Development Team
- # This software is released under the PostgreSQL Licence
- #
- #########################################################################
-
- """This File Provides ipv4 and ipv6 address check."""
-
- import re
-
- IPV4SEG = r'(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9])'
- IPV4ADDR = r'(?:(?:' + IPV4SEG + r'\.){3,3}' + IPV4SEG + r')'
- IPV6SEG = r'(?:(?:[0-9a-fA-F]){1,4})'
- IPV6GROUPS = (
- # 1:2:3:4:5:6:7:8
- r'(?:' + IPV6SEG + r':){7,7}' + IPV6SEG,
- # 1:: 1:2:3:4:5:6:7::
- r'(?:' + IPV6SEG + r':){1,7}:',
- # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8
- r'(?:' + IPV6SEG + r':){1,6}:' + IPV6SEG,
- # 1::7:8 1:2:3:4:5::7:8 1:2:3:4:5::8
- r'(?:' + IPV6SEG + r':){1,5}(?::' + IPV6SEG + r'){1,2}',
- # 1::6:7:8 1:2:3:4::6:7:8 1:2:3:4::8
- r'(?:' + IPV6SEG + r':){1,4}(?::' + IPV6SEG + r'){1,3}',
- # 1::5:6:7:8 1:2:3::5:6:7:8 1:2:3::8
- r'(?:' + IPV6SEG + r':){1,3}(?::' + IPV6SEG + r'){1,4}',
- # 1::4:5:6:7:8 1:2::4:5:6:7:8 1:2::8
- r'(?:' + IPV6SEG + r':){1,2}(?::' + IPV6SEG + r'){1,5}',
- # 1::3:4:5:6:7:8 1::3:4:5:6:7:8 1::8
- IPV6SEG + r':(?:(?::' + IPV6SEG + r'){1,6})',
- # ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 ::
- r':(?:(?::' + IPV6SEG + r'){1,7}|:)',
- # fe80::7:8%eth0 fe80::7:8%1 (link-local IPv6 addresses with zone index)
- r'fe80:(?::' + IPV6SEG + r'){0,4}%[0-9a-zA-Z]{1,}',
- # ::255.255.255.255 ::ffff:255.255.255.255 ::ffff:0:255.255.255.255
- # (IPv4-mapped IPv6 addresses and IPv4-translated addresses)
- r'::(?:ffff(?::0{1,4}){0,1}:){0,1}[^\s:]' + IPV4ADDR,
- # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33
- # (IPv4-Embedded IPv6 Address)
- r'(?:' + IPV6SEG + r':){1,4}:[^\s:]' + IPV4ADDR,
- )
- # Reverse rows for greedy match
- IPV6ADDR = '|'.join(['(?:{})'.format(g) for g in IPV6GROUPS[::-1]])
-
- ip6re = re.compile(IPV6ADDR)
- ip4re = re.compile(IPV4ADDR)
-
-
- def is_valid_ip4address(addr):
- return ip4re.match(addr)
-
-
- def is_valid_ip6address(addr):
- return ip6re.match(addr)
-
-
- def is_valid_ipaddress(addr):
- return ip4re.match(addr) or is_valid_ip6address(addr)
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