Skip to content

Instantly share code, notes, and snippets.

@dfee

dfee/ip_regex.py

Last active December 7, 2023 19:39
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save dfee/6ed3a4b05cfe7a6faf40a2102408d5d8 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save dfee/6ed3a4b05cfe7a6faf40a2102408d5d8 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. Devin Fee revised this gist Nov 2, 2016. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion ip_regex.py
    View file
    Original file line number Diff line number Diff line change
    @@ -5,7 +5,7 @@
    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')'
    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
  2. Devin Fee revised this gist Oct 26, 2016. 1 changed file with 13 additions and 12 deletions.
    25 changes: 13 additions & 12 deletions ip_regex.py
    View file
    Original file line number Diff line number Diff line change
    @@ -1,26 +1,27 @@
    # 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:: 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,
    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 greedier match.
    IPV6ADDR = '|'.join(['(?:{})'.format(g) for g in IPV6GROUPS[::-1]]) # Reverse rows for greedy match


    tests = [
  3. Devin Fee revised this gist Oct 26, 2016. 1 changed file with 70 additions and 36 deletions.
    106 changes: 70 additions & 36 deletions ip_regex.py
    View file
    Original file line number Diff line number Diff line change
    @@ -1,39 +1,73 @@
    # Constructed from http://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses
    # Constructed with help from
    # http://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses

    IPV4SEG = r'(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])'
    IPV4ADDR = r'(' + IPV4SEG + r'\.){3,3}' + IPV4SEG
    IPV6SEG = r'[0-9a-fA-F]{1,4}'
    IPV6ADDR = (
    r'('
    # 1:2:3:4:5:6:7:8
    r'(' + IPV6SEG + r':){7,7}' + IPV6SEG + r'|'
    # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8
    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 + r'|'
    # 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
    r'' + 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}|:)|'
    # fe08fe80::7:8%eth0 fe08fe80::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}' + IPV4ADDR + r'|'
    # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33
    # (IPv4-Embedded IPv6 Address)
    r'(' + IPV6SEG + r':){1,4}:' + IPV4ADDR + r''
    r')'
    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:: 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,
    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 greedier 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

    re.search(IPV6ADDR, '1:2:3:4:5:6:7:8')
    re.search(IPV4ADDR, '127.0.0.1')
    test_individual(tests)
    test_multiline(tests)
  4. Devin Fee renamed this gist Oct 26, 2016. 1 changed file with 0 additions and 0 deletions.
    0 python IPV4 and IPV6 → ip_regex.py
    View file
    File renamed without changes.
  5. Devin Fee created this gist Oct 26, 2016.
    39 changes: 39 additions & 0 deletions python IPV4 and IPV6
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,39 @@
    # Constructed from http://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses

    IPV4SEG = r'(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])'
    IPV4ADDR = r'(' + IPV4SEG + r'\.){3,3}' + IPV4SEG
    IPV6SEG = r'[0-9a-fA-F]{1,4}'
    IPV6ADDR = (
    r'('
    # 1:2:3:4:5:6:7:8
    r'(' + IPV6SEG + r':){7,7}' + IPV6SEG + r'|'
    # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8
    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 + r'|'
    # 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
    r'' + 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}|:)|'
    # fe08fe80::7:8%eth0 fe08fe80::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}' + IPV4ADDR + r'|'
    # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33
    # (IPv4-Embedded IPv6 Address)
    r'(' + IPV6SEG + r':){1,4}:' + IPV4ADDR + r''
    r')'
    )

    re.search(IPV6ADDR, '1:2:3:4:5:6:7:8')
    re.search(IPV4ADDR, '127.0.0.1')