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Artifact 82beb33f61dd799c01d901267d3f751967fe6d86f3ba4722386594aa136ad8c0:

  • File validate-an-IP-address.ps1 — part of check-in [6444ec7be2] at 2018-06-10 12:56:35 on branch trunk — REALLY validates given IP address and returns True/False. The original script didn’t allow ZEROS in the Ip address (eg: 127.0.0.1 returned $false) (user: Joel Bennett size: 1109)

# encoding: ascii
# api: powershell
# title: validate an IP address
# description: REALLY validates given IP address and returns True/False.  The original script didn’t allow ZEROS in the Ip address (eg: 127.0.0.1 returned $false)
# version: 0.1
# author: Joel Bennett
# license: CC0
# x-poshcode-id: 1172
# x-derived-from-id: 5781
# x-archived: 2017-05-30T18:42:04
# x-published: 2010-06-25T01:28:00
#
# now without trap
#
# validate given IP address as an IPAdress (given string input)
PARAM($IP=$(read-host "Enter any IP Address"))

## YOU could do this, but ...
# $IP -match "(\d{1,3}).(\d{1,3}).(\d{1,3}).(\d{1,3})" -and -not ([int[]]$matches[1..4] -gt 255)

## you shouldn't parse things yourself when it's in the framework. You might make a mistake ;-)
#trap { return $false }
#[IPAddress]$IP  # Just cast it to an IPAddress ... if it's valid, it will work.
#return $true

## no trap needed if tryparse is used 

#[system.net.IPAddress]::tryparse($ip,[ref]$null)

# when you still need the parsed IP number :

[ref]$a = $null
[system.net.IPAddress]::tryparse($ip,$a)