Private/Assert-SNOWAuth.ps1
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function Assert-SNOWAuth() { [CmdletBinding()] param ( [Parameter()] [int] # Expressed in seconds $OauthExpiryBuffer = 180 ) if($null -eq $script:SNOWAuth){ Write-Error "Please set ServiceNow authentication with Set-SNOWAuth" -ErrorAction Stop } if($script:SNOWAuth.Type -eq "OAuth"){ $CurrentTime = Get-Date $ExpiryTime = $script:SNOWAuth.Expires.AddSeconds(-$OauthExpiryBuffer) if($ExpiryTime -le $CurrentTime){ #? Get a new token $Body = @{ grant_type="refresh_token" client_id = $script:SNOWAuth.ClientID client_secret = [System.Net.NetworkCredential]::new('dummy', $script:SNOWAuth.ClientSecret).Password refresh_token = $script:SNOWAuth.token.refresh_token } $Token = Invoke-RestMethod -Method POST -uri "https://$($Script:SNOWAuth.Instance).service-now.com/oauth_token.do" -Body $Body -Verbose:$false $script:SNOWAuth.token = $token $script:SNOWAuth.Expires = (get-date).AddSeconds($Token.expires_in) } } } |