Private/Test-IsValidDN.ps1
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function Test-IsValidDN { <# .SYNOPSIS Cmdlet will check if the input string is a valid distinguishedname. .DESCRIPTION Cmdlet will check if the input string is a valid distinguishedname. Cmdlet is intended as a dignostic tool for input validation .PARAMETER ObjectDN A string representing the object distinguishedname. .EXAMPLE Test-IsValidDN -ObjectDN 'Value1' .NOTES https://pscustomobject.github.io/powershell/howto/identity%20management/PowerShell-Check-If-String-Is-A-DN/ #> [CmdletBinding(ConfirmImpact = 'Low')] [OutputType([bool])] param ( [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, ValueFromRemainingArguments = $false, HelpMessage = 'String to ve validated as DistinguishedName', Position = 0)] [ValidateNotNullOrEmpty()] [Alias('DN', 'DistinguishedName')] [string] $ObjectDN ) Begin {} Process { # Define DN Regex [regex]$distinguishedNameRegex = '^(?:(?<cn>CN=(?<name>(?:[^,]|\,)*)),)?(?:(?<path>(?:(?:CN|OU)=(?:[^,]|\,)+,?)+),)?(?<domain>(?:DC=(?:[^,]|\,)+,?)+)$' } end { return $ObjectDN -match $distinguishedNameRegex } } |