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/ Version: 1.0 DateModified: 08/Oct/2021 LasModifiedBy: Vicente Rodriguez Eguibar vicente@eguibar.com Eguibar Information Technology S.L. http://www.eguibarit.com #> [CmdletBinding(ConfirmImpact = 'Low', SupportsShouldProcess = $true)] [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] $ObjectDN ) Begin {} #end Begin Process { Try { # Define DN Regex [regex]$distinguishedNameRegex = '^(?:(?<cn>CN=(?<name>(?:[^,]|\,)*)),)?(?:(?<path>(?:(?:CN|OU)=(?:[^,]|\,)+,?)+),)?(?<domain>(?:DC=(?:[^,]|\,)+,?)+)$' # Use ShouldProcess to confirm the operation if ($PSCmdlet.ShouldProcess($ObjectDN, 'Validate DistinguishedName')) { # Perform the actual validation $isValid = $ObjectDN -match $distinguishedNameRegex # Provide verbose output if ($PSCmdlet.MyInvocation.BoundParameters['Verbose']) { Write-Verbose "DistinguishedName validation result: $isValid" } #end If $isValid } #end If } catch { # Handle exceptions gracefully Write-Error "An error occurred: $_" } #end Try-Catch } #end Process end { return $isValid } #end End } #end Function |