# Validate IP address with Regular Expression

Go to solution Solved by Hackoo,

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Hi
I want to translate this function written in Vbscript to Autoit

```Titre = "Tester la validité d'une d'Adresse IP"

else

End if

gateway = InputBox("Entrez la passerelle", "gateway default","255.255.255.0")

if IP_Valide(gateway) = True Then

MsgBox gateway & " est une Adresse IP Valide",64,Titre

else

MsgBox gateway & " est une Adresse IP NON Valide",16,Titre

End if

Function IP_Valide(ip)

Set RegularExpressionObject = New RegExp

With RegularExpressionObject

.Pattern = "^((25[0-5]|2[0-4]\d|1?\d?\d)\.){3}(25[0-5]|2[0-4]\d|1?\d?\d)\$"

.IgnoreCase = False

If .Test(ip)= True then

IP_Valide = True

end if

End With

End Function```

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```\$sIP4 = '192.168.30.195'
MsgBox(0, '?', _IsIP4(\$sIP4))

Func _IsIP4(\$sIP4)
Return StringRegExp(\$sIP4, '^(?:(?:2(?:[0-4]\d|5[0-5])|1?\d{1,2})\.){3}(?:(?:2(?:[0-4]\d|5[0-5])|1?\d{1,2}))\$')
; Return StringRegExp(\$sIP4, '^(?:(?:2(?:[0-4][\d|5[0-5])|[0-1]?\d{1,2})\.){3}(?:(?:2(?:[0-4]\d|5[0-5])|[0-1]?\d{1,2}))\$')
EndFunc```

Edited by AZJIO
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For what?

Monkey's are, like, natures humans.

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• Solution

Ok , I solved it like this, and thank you for your reply

```Local \$Titre = "Tester la validité d'une d'Adresse IP"
Local \$IP = InputBox("Veuillez saisir une Adresse",\$Titre,"172.16.18.21")
If \$IP = "" Then Exit
if IP_Valide(\$IP) = True Then
Msgbox(64,\$Titre,\$IP & " est une adresse est valide")
else
MsgBox(16,\$Titre,\$IP & " est une adresse est non valide")
EndIf

Local \$IP = InputBox("Veuillez saisir une Adresse",\$Titre,"500.800.18.21")
if IP_Valide(\$IP) = True Then
Msgbox(64,\$Titre,\$IP & " est une adresse valide")
else
MsgBox(16,\$Titre,\$IP & " est une adresse non valide")
EndIf

Func IP_Valide(\$ip)
Return StringRegExp (\$ip,"^((25[0-5]|2[0-4]\d|1?\d?\d)\.){3}(25[0-5]|2[0-4]\d|1?\d?\d)\$")
EndFunc```
Edited by Hackoo
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That regex doesn't validate an IP address, it merely validates that the string contains 4 sets of numbers between 0 and 255 that are separated by periods. A large portion of those number sets are not valid ip addresses.

I'd use this function to test for a valid IP address.

EDIT: N.B. RegEx by the way is a fairly unreliable way to validate a real IP address instead of just an arbitrary set of numbers that fit. A search of the net will demonstrate to you that there's hundreds of RegEx patterns to attempt it, but not many that actually succeed at doing it correctly.

Edited by BrewManNH

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Hackoo

You made a short regular expression.

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