Functions/Test-GraphSecurityAuthToken.ps1
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<#
.Synopsis Internal function to test if the current sessions has a Authentication Token for Microsoft Graph Security. .DESCRIPTION Tests if the current sessions has a Authentication Token for Microsoft Graph Security. .EXAMPLE Test-GraphSecurityAuthToken .FUNCTIONALITY Test-GraphSecurityAuthToken is intended as an internal function to test for Authentication Token. #> function Test-GraphSecurityAuthToken { # Checking if authToken exists before running authentication if ($global:GraphSecurityauthHeader) { # Setting DateTime to Universal time to work in all timezones $DateTime = (Get-Date).ToUniversalTime() # If the authToken exists checking when it expires $TokenExpires = ($GraphSecurityauthHeader.ExpiresOn.datetime - $DateTime).Minutes if ($TokenExpires -le 0) { #Token is expired, check for UserName and AppId, and go get a token Write-Warning "Authentication Token expired $TokenExpires minutes ago" Try { $Username = Select-GraphSecurityUsername } Catch { Throw $_ } Try { $AppId = Select-GraphSecurityAppId } Catch { Throw $_ } Write-Warning "Refreshing Auth Token" Get-GraphSecurityAuthToken } } # Authentication doesn't exist, calling Get-GraphSecurityAuthToken function else { Try { $Username = Select-GraphSecurityUsername } Catch { Throw $_ } Try { $AppId = Select-GraphSecurityAppId } Catch { Throw $_ } Get-GraphSecurityAuthToken } } |