(AutoIt) Get Google API Access Token using P12 Service Account Key

Demonstrates how to get a Google API access token using a P12 service account key.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

; --------------------------------------------------------------------------------
; For a step-by-step guide for setting up your Google Workspace service account,
; see Setup Google Workspace Account for Sending SMTP GMail from a Service Account
; --------------------------------------------------------------------------------

; First load the PKCS12 (.p12 / .pfx) into a PFX object.
$oPfx = ObjCreate("Chilkat.Pfx")
Local $bSuccess = $oPfx.LoadPfxFile("qa_data/pfx/chilkat25-cbd7b42afbd8.p12","notasecret")
If ($bSuccess <> True) Then
    ConsoleWrite($oPfx.LastErrorText & @CRLF)
    Exit
EndIf

$oGAuth = ObjCreate("Chilkat.AuthGoogle")
$bSuccess = $oGAuth.SetP12($oPfx)

; The ISS is your service account email address ending in gserviceaccount.com.
Local $sIss = "chilkatsvc@chilkat25.iam.gserviceaccount.com"

; The scope is always the following string:
Local $scope = "https://mail.google.com/"

; The sub is your company email address
Local $sOauth_sub = "info@chilkat.xyz"

; The access token is valid for this number of seconds.
Local $iNumSec = 3600

$oGAuth.EmailAddress = $sIss
$oGAuth.Scope = $scope
$oGAuth.ExpireNumSeconds = $iNumSec
$oGAuth.SubEmailAddress = $sOauth_sub

; Connect to www.googleapis.com
$oTlsSock = ObjCreate("Chilkat.Socket")
$bSuccess = $oTlsSock.Connect("www.googleapis.com",443,True,5000)
If ($bSuccess <> True) Then
    ConsoleWrite($oTlsSock.LastErrorText & @CRLF)
    Exit
EndIf

; Send the request to obtain the access token.
$bSuccess = $oGAuth.ObtainAccessToken($oTlsSock)
If ($bSuccess <> True) Then
    ConsoleWrite($oGAuth.LastErrorText & @CRLF)
    Exit
EndIf

; Examine the access token:
ConsoleWrite("Access Token: " & $oGAuth.AccessToken & @CRLF)