B4X

Get a Google Drive Access Token using a JSON Private Key

See more Google Drive Examples

Demonstrates how to get a Google Drive API access token using a JSON service account private key. B4X

Dim success As Boolean = False

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

'  First load the JSON key into a string.
Dim fac As ChilkatFileAccess
fac.Initialize
Dim jsonKey As String = fac.ReadEntireTextFile("qa_data/googleApi/chilkatcloud-b8826e030499.json", "utf-8")
If fac.LastMethodSuccess <> True Then
    Log(fac.LastErrorText)
    Return
End If


Dim gAuth As ChilkatAuthGoogle
gAuth.Initialize("gAuth")
gAuth.JsonKey = jsonKey

'  Choose a scope.
gAuth.Scope = "https://www.googleapis.com/auth/drive"

'  Request an access token that is valid for this many seconds.
gAuth.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.)
gAuth.SubEmailAddress = ""

'  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.
Dim tlsSock As ChilkatSocket
tlsSock.Initialize("tlsSock")
success = tlsSock.Connect("www.googleapis.com", 443, True, 5000)
If success <> True Then
    Log(tlsSock.LastErrorText)
    Return
End If


'  Send the request to obtain the access token.
success = gAuth.ObtainAccessToken(tlsSock)
If success <> True Then
    Log(gAuth.LastErrorText)
    Return
End If


'  Examine the access token:
Log("Access Token: " & gAuth.AccessToken)