PowerShell/Scripts/check-ipv4-address.ps1
2021-03-22 20:10:18 +01:00

35 lines
868 B
PowerShell
Executable File

#!/bin/powershell
<#
.SYNTAX ./check-ipv4-address.ps1 [<address>]
.DESCRIPTION checks the given IPv4 address for validity
.LINK https://github.com/fleschutz/PowerShell
.NOTES Author: Markus Fleschutz / License: CC0
#>
param($Address = "")
function IsIPv4AddressValid { param([string]$IP)
$RegEx = "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
if ($IP -match $RegEx) {
return $true
} else {
return $false
}
}
try {
if ($Address -eq "" ) {
$Address = read-host "Enter IPv4 address to validate"
}
if (IsIPv4AddressValid $Address) {
write-host -foregroundColor green "OK - IPv4 address $Address is valid"
exit 0
} else {
write-warning "Invalid IPv4 address: $Address"
exit 1
}
} catch {
write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}