Lua

Azure AD Service-to-service access token request

See more Azure OAuth2 Examples

Send an Azure AD service-to-service token request to get an access token using a shared secret. Lua

local chilkat = require("chilkat")

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

local http = chilkat.Http.new()

-- To see the exact HTTP request sent and the response, set the SessionLogFilename property:
http.session_log_filename = "qa_output/chilkatHttpLog.txt"

local req = chilkat.HttpRequest.new()

-- Set the following request params:
-- grant_type     required     Specifies the requested grant type. In a Client Credentials Grant flow, the value must be client_credentials.
--
-- client_id     required     Specifies the Azure AD client id of the calling web service.
--     To find the calling application's client ID, in the Azure portal, click Azure Active Directory, click App registrations, click the application.
--     The client_id is the Application ID
--
-- client_secret     required     Enter a key registered for the calling web service or daemon application in Azure AD.
--     To create a key, in the Azure portal, click Azure Active Directory, click App registrations, click the application, click Settings, click Keys, and add a Key.
--     URL-encode this secret when providing it.
--
-- resource     required     Enter the App ID URI of the receiving web service. To find the App ID URI, in the Azure portal, click Azure Active Directory,
--     click App registrations, click the service application, and then click Settings and Properties.

req:add_param("grant_type", "client_credentials")
req:add_param("client_id", "MY_CLIENT_ID")
req:add_param("client_secret", "MY_CLIENT_SECRET")
req:add_param("resource", "https://service.contoso.com/")

req.http_verb = "POST"
req.content_type = "application/x-www-form-urlencoded"

local resp = chilkat.HttpResponse.new()
local success = http:http_req("https://login.microsoftonline.com/<tenant_id>/oauth2/token", req, resp)
if not success then
    print(http.last_error_text)
    return
end

local respStatusCode = resp.status_code
print("Response Status Code = " .. respStatusCode)

local json = chilkat.JsonObject.new()
json.emit_compact = false
json:load(resp.body_str)
print("Response JSON:")
print(json:emit())

if respStatusCode >= 400 then
    print("Response Header:")
    print(resp.header)
    print("Failed.")
    return
end

-- Sample response:

-- {
--   "token_type": "Bearer",
--   "expires_in": "3599",
--   "ext_expires_in": "3599",
--   "expires_on": "1570059833",
--   "not_before": "1570055933",
--   "resource": "https://adminchilkatsoft.onmicrosoft.com/eb1b8ced-76b7-4845-aec5-d3e91776e345",
--   "access_token": "eyJ0eXAiO ... pmgw"
-- }

-- To get the items from the JSON....
local token_type = json:string_of("token_type")
local expires_in = json:string_of("expires_in")
local ext_expires_in = json:string_of("ext_expires_in")
local expires_on = json:string_of("expires_on")
local not_before = json:string_of("not_before")
local resource = json:string_of("resource")
local access_token = json:string_of("access_token")