Private/Test-IsValidSID.ps1
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function Test-IsValidSID { <# .SYNOPSIS Cmdlet will check if the input string is a valid SID. .DESCRIPTION Cmdlet will check if the input string is a valid SID. Cmdlet is intended as a dignostic tool for input validation .PARAMETER ObjectSID A string representing the object Security Identifier (SID). .EXAMPLE Test-IsValidDN -ObjectSID 'S-1-5-21-2562450185-1914323539-512974444-1234' .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 = $false)] [OutputType([bool])] param ( [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, ValueFromRemainingArguments = $false, HelpMessage = 'String to be validated as SID', Position = 0)] [ValidateNotNullOrEmpty()] [Alias('SID', 'SecurityIdentifier')] [string] $ObjectSID ) Begin { # Define DN Regex $SidRegex = [RegEx]::new('^S-1-[0-59]-\d{2}-\d{8,10}-\d{8,10}-\d{8,10}-[1-9]\d{3}') } #end Begin Process { Try { # Perform the actual validation $isValid = $ObjectSID -match $SidRegex # Provide verbose output if ($PSCmdlet.MyInvocation.BoundParameters['Verbose']) { Write-Verbose "objectSID validation result: $isValid" } #end If } catch { # Handle exceptions gracefully Write-Error "An error occurred: $_" } #end Try-Catch } #end Process end { return $isValid } #end End } #end Function |