Node.js

Azure REST API Access Token

See more Azure OAuth2 Examples

Demonstrates how to request an Azure REST API OAUTH2 access token.

Note: In order to access resources a Service Principal needs to be created in your Tenant. It is really convenient to do it via AZ CLI:

az ad sp create-for-rbac --name [APP_NAME] --password [CLIENT_SECRET]

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var rest = new chilkat.Rest();

    //  URL: https://login.microsoftonline.com/TENANT_ID/oauth2/token
    var bTls = true;
    var port = 443;
    var bAutoReconnect = true;
    success = rest.Connect("login.microsoftonline.com",port,bTls,bAutoReconnect);
    if (success !== true) {
        console.log("ConnectFailReason: " + rest.ConnectFailReason);
        console.log(rest.LastErrorText);
        return;
    }

    //  Add query params to the request.
    rest.AddQueryParam("grant_type","client_credentials");
    rest.AddQueryParam("client_id","APP_ID");
    rest.AddQueryParam("client_secret","CLIENT_SECRET");
    //  Note: The resource must match the API for which you're using the access token..
    rest.AddQueryParam("resource","https://management.azure.com/");

    var strResponseBody = rest.FullRequestFormUrlEncoded("POST","/TENANT_ID/oauth2/token");
    if (rest.LastMethodSuccess !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    var respStatusCode = rest.ResponseStatusCode;
    if (respStatusCode >= 400) {
        console.log("Response Status Code = " + respStatusCode);
        console.log("Response Header:");
        console.log(rest.ResponseHeader);
        console.log("Response Body:");
        console.log(strResponseBody);
        return;
    }

    var json = new chilkat.JsonObject();
    json.Load(strResponseBody);
    json.EmitCompact = false;
    console.log(json.Emit());

    //  The result is an access token such as the following:

    //  {
    //    "token_type": "Bearer",
    //    "expires_in": "3600",
    //    "ext_expires_in": "3600",
    //    "expires_on": "1557864616",
    //    "not_before": "1557860716",
    //    "resource": "https://management.azure.com/",
    //    "access_token": "eyJ0eXAiOiJKV1QiL ... 20UFDDOHEyUg"
    //  }

    //  We'll save this JSON to a file for other examples to use..
    json.WriteFile("qa_data/tokens/azureToken.json");

}

chilkatExample();