Visual FoxPro

Azure OAuth2 Client Credentials Grant Flow

See more OAuth2 Examples

Demonstrates how to get an OAuth2 access token for an Azure Registered App using the Client Credentials Grant Flow.

Note: Your Azure app must be registered as a single-tenant app to use client credentials.

Visual FoxPro

LOCAL lnSuccess
LOCAL loHttp
LOCAL loReq
LOCAL lcUrl
LOCAL loResp
LOCAL lnStatusCode
LOCAL loJson

lnSuccess = 0

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

loHttp = CreateObject('Chilkat.Http')

loReq = CreateObject('Chilkat.HttpRequest')
loReq.AddParam("client_secret","CLIENT_SECRET")
loReq.AddParam("client_id","CLIENT_ID")

* See Understanding Scopes in Azure OAuth2 Client Credentials Flow
loReq.AddParam("scope","https://graph.microsoft.com/.default")

loReq.AddParam("grant_type","client_credentials")

* Note: Your Azure app must be registered as a single-tenant app to use client credentials.
* Use your own tenant ID, for example 4d8fdd66-66d1-43b0-ae5c-e31b4b7de5cd
lcUrl = "https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token"

loReq.HttpVerb = "POST"
loReq.ContentType = "application/x-www-form-urlencoded"

loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpReq(lcUrl,loReq,loResp)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    RELEASE loResp
    CANCEL
ENDIF

lnStatusCode = loResp.StatusCode
? "Response status code = " + STR(lnStatusCode)

loJson = CreateObject('Chilkat.JsonObject')
loJson.Load(loResp.BodyStr)

loJson.EmitCompact = 0
? loJson.Emit()

* Sample successful output:

* {
*   "token_type": "Bearer",
*   "expires_in": 3599,
*   "ext_expires_in": 3599,
*   "access_token": "eyJ0eX...K0jOERg"
* }

IF (lnStatusCode = 200) THEN
    loJson.WriteFile("qa_data/tokens/azureClientCredentialsToken.json")
    ? "Success."
ELSE
    ? "Failed."
ENDIF

RELEASE loHttp
RELEASE loReq
RELEASE loResp
RELEASE loJson