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Validate IPV6 Address

James

By James
in AutoIt Example Scripts

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James Universalist

James

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Quick function for validating IPV6. It's not advanced, but can validate several notations.

; Default example
If _ISIPV6IP('3ffe:1900:4545:3:200:f8ff:fe21:67cf') Then MsgBox(0, '', 'Valid IPV6 address!')
; Leading zeroes
If _ISIPV6IP('2001:db8:85a3:0:0:8a2e:370:7334') Then MsgBox(0, '', 'Valid IPV6 address!')
; Groups of zeroes
If _ISIPV6IP('2001:db8:85a3::8a2e:370:7334') Then MsgBox(0, '', 'Valid IPV6 address!')

Func _ISIPV6IP($Addr)
Return StringRegExp($Addr, "(([\da-f]{0,4}:{0,2}){1,8})")
EndFunc
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guinness Universalist

guinness

Posted
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Nice James.

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Updated: 22/04/2018

dany Polymath

dany

Posted
Posted

Nice, but it also returns true for an empty string. You need anchors in your regexp and demand atleast one character. After some playing around I got this:

Func _ISIPV6IP($sAddr)
    Return StringRegExp($sAddr, "^(?i)([\da-f]{1,4}|::)((:{0,2}[\da-f]{0,4}){0,7})$")
EndFunc

Also added case-insensitive flag. Passes 332 of the 486 tests in this perl script. Check the mindboggling regular expression patterns in there :wacko:

[center]Spiderskank Spiderskank[/center]GetOpt Parse command line options UDF | AU3Text Program internationalization UDF | Identicon visual hash UDF

BrewManNH Universalist

BrewManNH

Posted
Posted

Just out of curiosity, how would you have to modify that to show as invalid an address like this 2001:db8:85a3::8a2e::7334, where's there's 2 sets of double colons?

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James Universalist

James

Posted
  • Author
Posted

Nice, but it also returns true for an empty string. You need anchors in your regexp and demand atleast one character. After some playing around I got this:

Func _ISIPV6IP($sAddr)
Return StringRegExp($sAddr, "^(?i)([da-f]{1,4}|::)((:{0,2}[da-f]{0,4}){0,7})$")
EndFunc

Also added case-insensitive flag. Passes 332 of the 486 tests in this perl script. Check the mindboggling regular expression patterns in there :wacko:

Nice, I only wrote it quickly for something at work, but yours is much better. For this, I didn't even visit gskinners website ;)
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dany Polymath

dany

Posted
Posted

Just out of curiosity, how would you have to modify that to show as invalid an address like this 2001:db8:85a3::8a2e::7334, where's there's 2 sets of double colons?

Dunno, the patterns I linked to are pretty complex. I'd do it with StringReplace however:

Func _ISIPV6IP($sAddr)
    StringReplace($sAddr, '::', '_')
    If @extended > 1 Then Return False
    Return StringRegExp($sAddr, "^(?i)([da-f]{1,4}|::)((:{0,2}[da-f]{0,4}){0,7})$")
EndFunc

With this addition it passes 359 of the 486 tests.

[center]Spiderskank Spiderskank[/center]GetOpt Parse command line options UDF | AU3Text Program internationalization UDF | Identicon visual hash UDF

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