TenantConverge

0.9.0-beta1

Private/Access/Get-TcTenantId.ps1

                                function Get-TcTenantId {

    <#

    .SYNOPSIS

    Resolves a tenant ID from a domain, using the public sign-in metadata.

    #>

    [CmdletBinding()]

    [OutputType([string])]

    param(

        [Parameter(Mandatory)][string]$Domain

    )

    $metadata = Invoke-RestMethod -Uri "https://login.microsoftonline.com/$Domain/v2.0/.well-known/openid-configuration" -TimeoutSec 20

    if ([string](Get-TcProperty $metadata 'issuer') -match '/([0-9a-f\-]{36})/') { return $Matches[1] }

    throw "No tenant was found for $Domain."

}