Last active
December 7, 2023 19:39
-
-
Save dfee/6ed3a4b05cfe7a6faf40a2102408d5d8 to your computer and use it in GitHub Desktop.
Python IPV4 / IPV6 Regular Expressions (REGEX)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # Constructed with help from | |
| # http://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses | |
| # Try it on regex101: https://regex101.com/r/yVdrJQ/1 | |
| 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 = ( | |
| r'(?:' + IPV6SEG + r':){7,7}' + IPV6SEG, # 1:2:3:4:5:6:7:8 | |
| r'(?:' + IPV6SEG + r':){1,7}:', # 1:: 1:2:3:4:5:6:7:: | |
| r'(?:' + IPV6SEG + r':){1,6}:' + IPV6SEG, # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8 | |
| r'(?:' + IPV6SEG + r':){1,5}(?::' + IPV6SEG + r'){1,2}', # 1::7:8 1:2:3:4:5::7:8 1:2:3:4:5::8 | |
| r'(?:' + IPV6SEG + r':){1,4}(?::' + IPV6SEG + r'){1,3}', # 1::6:7:8 1:2:3:4::6:7:8 1:2:3:4::8 | |
| r'(?:' + IPV6SEG + r':){1,3}(?::' + IPV6SEG + r'){1,4}', # 1::5:6:7:8 1:2:3::5:6:7:8 1:2:3::8 | |
| r'(?:' + IPV6SEG + r':){1,2}(?::' + IPV6SEG + r'){1,5}', # 1::4:5:6:7:8 1:2::4:5:6:7:8 1:2::8 | |
| IPV6SEG + r':(?:(?::' + IPV6SEG + r'){1,6})', # 1::3:4:5:6:7:8 1::3:4:5:6:7:8 1::8 | |
| r':(?:(?::' + IPV6SEG + r'){1,7}|:)', # ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 :: | |
| r'fe80:(?::' + IPV6SEG + r'){0,4}%[0-9a-zA-Z]{1,}', # fe80::7:8%eth0 fe80::7:8%1 (link-local IPv6 addresses with zone index) | |
| r'::(?:ffff(?::0{1,4}){0,1}:){0,1}[^\s:]' + IPV4ADDR, # ::255.255.255.255 ::ffff:255.255.255.255 ::ffff:0:255.255.255.255 (IPv4-mapped IPv6 addresses and IPv4-translated addresses) | |
| r'(?:' + IPV6SEG + r':){1,4}:[^\s:]' + IPV4ADDR, # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address) | |
| ) | |
| IPV6ADDR = '|'.join(['(?:{})'.format(g) for g in IPV6GROUPS[::-1]]) # Reverse rows for greedy match | |
| tests = [ | |
| '1::', | |
| '1:2:3:4:5:6:7::', | |
| '1::8', | |
| '1:2:3:4:5:6::8', | |
| '1:2:3:4:5:6::8', | |
| '1::7:8', | |
| '1:2:3:4:5::7:8', | |
| '1:2:3:4:5::8', | |
| '1::6:7:8', | |
| '1:2:3:4::6:7:8', | |
| '1:2:3:4::8', | |
| '1::5:6:7:8', | |
| '1:2:3::5:6:7:8', | |
| '1:2:3::8', | |
| '1::4:5:6:7:8', | |
| '1:2::4:5:6:7:8', | |
| '1:2::8', | |
| '1::3:4:5:6:7:8', | |
| '1::3:4:5:6:7:8', | |
| '1::8', | |
| '::2:3:4:5:6:7:8', | |
| '::2:3:4:5:6:7:8', | |
| '::8', | |
| '::', | |
| 'fe80::7:8%eth0', | |
| 'fe80::7:8%1', | |
| '::255.255.255.255', | |
| '::ffff:255.255.255.255', | |
| '::ffff:0:255.255.255.255', | |
| '2001:db8:3:4::192.0.2.33', | |
| '64:ff9b::192.0.2.33', | |
| ] | |
| # IPV6ADDR Tests | |
| def test_individual(tests): | |
| for t in tests: | |
| assert re.search(IPV6ADDR, t).group() == t | |
| # MULTILINE | |
| def test_multiline(tests): | |
| _tests = tests[:] | |
| for t in re.findall(IPV6ADDR, ' '.join(tests)): | |
| _tests.remove(t) | |
| assert not _tests | |
| test_individual(tests) | |
| test_multiline(tests) |
Add case insensitive flag to line 22 to match
::FFFF:129.144.52.38!IPV6GROUPS = ( r'(?:' + IPV6SEG + r':){7,7}' + IPV6SEG, # 1:2:3:4:5:6:7:8 r'(?:' + IPV6SEG + r':){1,7}:', # 1:: 1:2:3:4:5:6:7:: r'(?:' + IPV6SEG + r':){1,6}:' + IPV6SEG, # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8 r'(?:' + IPV6SEG + r':){1,5}(?::' + IPV6SEG + r'){1,2}', # 1::7:8 1:2:3:4:5::7:8 1:2:3:4:5::8 r'(?:' + IPV6SEG + r':){1,4}(?::' + IPV6SEG + r'){1,3}', # 1::6:7:8 1:2:3:4::6:7:8 1:2:3:4::8 r'(?:' + IPV6SEG + r':){1,3}(?::' + IPV6SEG + r'){1,4}', # 1::5:6:7:8 1:2:3::5:6:7:8 1:2:3::8 r'(?:' + IPV6SEG + r':){1,2}(?::' + IPV6SEG + r'){1,5}', # 1::4:5:6:7:8 1:2::4:5:6:7:8 1:2::8 IPV6SEG + r':(?:(?::' + IPV6SEG + r'){1,6})', # 1::3:4:5:6:7:8 1::3:4:5:6:7:8 1::8 r':(?:(?::' + IPV6SEG + r'){1,7}|:)', # ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 :: r'fe80:(?::' + IPV6SEG + r'){0,4}%[0-9a-zA-Z]{1,}', # fe80::7:8%eth0 fe80::7:8%1 (link-local IPv6 addresses with zone index) r'::(?i:ffff(?::0{1,4}){0,1}:){0,1}[^\s:]' + IPV4ADDR, # ::255.255.255.255 ::ffff:255.255.255.255 ::ffff:0:255.255.255.255 (IPv4-mapped IPv6 addresses and IPv4-translated addresses) r'(?:' + IPV6SEG + r':){1,4}:[^\s:]' + IPV4ADDR, # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address) )
@x41lakazam Is the change you mentioned actually applied to the line 21 in original source?
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add case insensitive flag to line 22 to match
::FFFF:129.144.52.38!