mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-10-06 01:51:59 +02:00
47 lines
1.4 KiB
PowerShell
Executable File
47 lines
1.4 KiB
PowerShell
Executable File
<#
|
|
.SYNTAX check-ipv6-address.ps1 [<address>]
|
|
.DESCRIPTION checks the given IPv6 address for validity
|
|
.LINK https://github.com/fleschutz/PowerShell
|
|
.NOTES Author: Markus Fleschutz / License: CC0
|
|
#>
|
|
|
|
param($Address = "")
|
|
|
|
function IsIPv6AddressValid { param([string]$IP)
|
|
$IPv4Regex = '(((25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2})\.){3}(25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2}))'
|
|
$G = '[a-f\d]{1,4}'
|
|
$Tail = @(":",
|
|
"(:($G)?|$IPv4Regex)",
|
|
":($IPv4Regex|$G(:$G)?|)",
|
|
"(:$IPv4Regex|:$G(:$IPv4Regex|(:$G){0,2})|:)",
|
|
"((:$G){0,2}(:$IPv4Regex|(:$G){1,2})|:)",
|
|
"((:$G){0,3}(:$IPv4Regex|(:$G){1,2})|:)",
|
|
"((:$G){0,4}(:$IPv4Regex|(:$G){1,2})|:)")
|
|
[string] $IPv6RegexString = $G
|
|
$Tail | foreach { $IPv6RegexString = "${G}:($IPv6RegexString|$_)" }
|
|
$IPv6RegexString = ":(:$G){0,5}((:$G){1,2}|:$IPv4Regex)|$IPv6RegexString"
|
|
$IPv6RegexString = $IPv6RegexString -replace '\(' , '(?:' # make all groups non-capturing
|
|
[regex] $IPv6Regex = $IPv6RegexString
|
|
if ($IP -imatch "^$IPv6Regex$") {
|
|
return $true
|
|
} else {
|
|
return $false
|
|
}
|
|
}
|
|
|
|
try {
|
|
if ($Address -eq "" ) {
|
|
$Address = read-host "Enter IPv6 address to validate"
|
|
}
|
|
if (IsIPv6AddressValid $Address) {
|
|
write-host -foregroundColor green "OK - IPv6 address $Address is valid"
|
|
exit 0
|
|
} else {
|
|
write-warning "Invalid IPv6 address: $Address"
|
|
exit 1
|
|
}
|
|
} catch {
|
|
write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
|
|
exit 1
|
|
}
|