(Visual FoxPro) Get a Google Drive Access Token using a .p12 Private Key

Demonstrates how to get a Google Drive API access token using a .p12 private key.

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

LOCAL loGAuth
LOCAL loPfx
LOCAL lnSuccess
LOCAL loTlsSock

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.AuthGoogle')
loGAuth = CreateObject('Chilkat.AuthGoogle')

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Pfx')
loPfx = CreateObject('Chilkat.Pfx')
lnSuccess = loPfx.LoadPfxFile("qa_data/googleApi/ChilkatTest-5ba79ce39459.p12","notasecret")
IF (lnSuccess <> 1) THEN
    ? loPfx.LastErrorText
    RELEASE loGAuth
    RELEASE loPfx
    CANCEL
ENDIF

lnSuccess = loGAuth.SetP12(loPfx)
IF (lnSuccess <> 1) THEN
    ? loGAuth.LastErrorText
    RELEASE loGAuth
    RELEASE loPfx
    CANCEL
ENDIF

* Choose a scope.
loGAuth.Scope = "https://www.googleapis.com/auth/drive"

* Request an access token that is valid for this many seconds.
loGAuth.ExpireNumSeconds = 3600

* If the application is requesting delegated access:
* The email address of the user for which the application is requesting delegated access,
* then set the email address here. (Otherwise leave it empty.)
loGAuth.SubEmailAddress = "support@chilkatcloud.com"

loGAuth.EmailAddress = "597922945226-00rb0ppfg0snd9jo6bhvd4v17jtj2d3a@developer.gserviceaccount.com"

* Connect to www.googleapis.com using TLS (TLS 1.2 is the default.)
* The Chilkat socket object is used so that the connection can be established
* through proxies or an SSH tunnel if desired.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Socket')
loTlsSock = CreateObject('Chilkat.Socket')
lnSuccess = loTlsSock.Connect("www.googleapis.com",443,1,5000)
IF (lnSuccess <> 1) THEN
    ? loTlsSock.LastErrorText
    RELEASE loGAuth
    RELEASE loPfx
    RELEASE loTlsSock
    CANCEL
ENDIF

* Send the request to obtain the access token.
lnSuccess = loGAuth.ObtainAccessToken(loTlsSock)
IF (lnSuccess <> 1) THEN
    ? loGAuth.LastErrorText
    RELEASE loGAuth
    RELEASE loPfx
    RELEASE loTlsSock
    CANCEL
ENDIF

* Examine the access token:
? "Access Token: " + loGAuth.AccessToken

RELEASE loGAuth
RELEASE loPfx
RELEASE loTlsSock