ALH

2.3.0

Public/Test-ALHIsUpn.ps1

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 <#PSScriptInfo
 
.VERSION 1.0.0
 
.GUID 531acbf8-aa34-4a20-98ac-9de1932d73bc
 
.AUTHOR Dieter Koch
 
.COMPANYNAME
 
.COPYRIGHT (c) 2021-2023 Dieter Koch
 
.TAGS
 
.LICENSEURI https://github.com/admins-little-helper/ALH/blob/main/LICENSE
 
.PROJECTURI https://github.com/admins-little-helper/ALH
 
.ICONURI
 
.EXTERNALMODULEDEPENDENCIES
 
.REQUIREDSCRIPTS
 
.EXTERNALSCRIPTDEPENDENCIES
 
.RELEASENOTES
    1.0.0
    - Initial release
 
#>


<#
 
.DESCRIPTION
 Contains a function to check if a given string is a valid UPN.
 
#>

function Test-ALHIsUpn {
    <#
    .SYNOPSIS
    Check if a given string is a valid UPN.
 
    .DESCRIPTION
    Checkif a given string is a valid UPN.
 
    .EXAMPLE
    Test-ALHIsUpn -UPN "somebody@somedomain.tld"
 
    .INPUTS
    System.String
 
    .OUTPUTS
    System.Boolean
 
    .NOTES
    Author: Dieter Koch
    Email: diko@admins-little-helper.de
 
    .LINK
    https://github.com/admins-little-helper/ALH/blob/main/Help/Test-ALHIsUpn.txt
    #>

    [OutputType([bool])]
    [CmdletBinding()]
    param(
        [Parameter(Mandatory, ValueFromPipeline)]
        [string]
        $UPN
    )

    process {
        try {
            if ($null -eq ($UPN -as [System.Net.Mail.MailAddress])) {
                $false
            }
            else {
                $true
            }
        }
        catch {
            Write-Error $_
        }
    }
}

#region EndOfScript
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# created with help of http://patorjk.com/software/taag/
#>
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