(Visual FoxPro) Get Google Account Info from OAuth2 Access Token

See more Google APIs Examples

In the Google OAuth2 authorization flow, an application can know the email address of the Google account used to authorize access by requesting and processing user information from the Google UserInfo endpoint after obtaining an access token.

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

LOCAL loHttp
LOCAL lnSuccess
LOCAL loSbResponseBody
LOCAL loJResp
LOCAL lnRespStatusCode
LOCAL lcV_sub
LOCAL lcName
LOCAL lcGiven_name
LOCAL lcFamily_name
LOCAL lcProfile
LOCAL lcPicture
LOCAL lcEmail
LOCAL lnEmail_verified
LOCAL lcLocale

* This example assumes 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.Http')
loHttp = CreateObject('Chilkat.Http')

* Implements the following CURL command:

* curl -H "Authorization: Bearer YOUR_ACCESS_TOKEN" https://www.googleapis.com/oauth2/v3/userinfo

* Use the following online tool to generate HTTP code from a CURL command
* Convert a cURL Command to HTTP Source Code

* Adds the "Authorization: Bearer YOUR_ACCESS_TOKEN" header.
loHttp.AuthToken = "YOUR_ACCESS_TOKEN"

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loHttp.QuickGetSb("https://www.googleapis.com/oauth2/v3/userinfo",loSbResponseBody)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loSbResponseBody
    CANCEL
ENDIF

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJResp = CreateObject('Chilkat.JsonObject')
loJResp.LoadSb(loSbResponseBody)
loJResp.EmitCompact = 0

? "Response Body:"
? loJResp.Emit()

lnRespStatusCode = loHttp.LastStatus
? "Response Status Code = " + STR(lnRespStatusCode)
IF (lnRespStatusCode >= 400) THEN
    ? "Response Header:"
    ? loHttp.LastHeader
    ? "Failed."
    RELEASE loHttp
    RELEASE loSbResponseBody
    RELEASE loJResp
    CANCEL
ENDIF

* Sample JSON response:
* (Sample code for parsing the JSON response is shown below)

* {
*   "sub": "112233445678901234567",
*   "name": "John Doe",
*   "given_name": "John",
*   "family_name": "Doe",
*   "profile": "https://plus.google.com/112233445678901234567",
*   "picture": "https://lh3.googleusercontent.com/a-/AOh14GiU-EXAMPLE",
*   "email": "johndoe@example.com",
*   "email_verified": true,
*   "locale": "en"
* }

* Sample code for parsing the JSON response...
* Use the following online tool to generate parsing code from sample JSON:
* Generate Parsing Code from JSON

lcV_sub = loJResp.StringOf("sub")
lcName = loJResp.StringOf("name")
lcGiven_name = loJResp.StringOf("given_name")
lcFamily_name = loJResp.StringOf("family_name")
lcProfile = loJResp.StringOf("profile")
lcPicture = loJResp.StringOf("picture")
lcEmail = loJResp.StringOf("email")
lnEmail_verified = loJResp.BoolOf("email_verified")
lcLocale = loJResp.StringOf("locale")

RELEASE loHttp
RELEASE loSbResponseBody
RELEASE loJResp