C++

Okta Client Credentials FLow

See more Okta OAuth/OIDC Examples

The Client Credentials flow is recommended for use in machine-to-machine authentication. Your application will need to securely store its Client ID and Secret and pass those to Okta in exchange for an access token. At a high-level, the flow only has two steps:

• Your application passes its client credentials to your Okta authorization server.
• If the credentials are accurate, Okta responds with an access token.

Note: This example uses "customScope". You'll replace it with whatever scope(s) you've defined for your app. Scopes are defined in your Authorization Server. See Okta Authorization Server / Scopes

C++

#include <CkHttp.h>
#include <CkHttpRequest.h>
#include <CkHttpResponse.h>
#include <CkStringBuilder.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkHttp http;

    //  Implements the following CURL command:

    //  curl --request POST \
    //    --url https://{yourOktaDomain}/oauth2/default/v1/token \
    //    --header 'accept: application/json' \
    //    --user "client_id:client_secret" \
    //    --header 'cache-control: no-cache' \
    //    --header 'content-type: application/x-www-form-urlencoded' \
    //    --data 'grant_type=client_credentials&scope=customScope'

    http.put_Login("client_id");
    http.put_Password("client_secret");

    CkHttpRequest req;
    req.put_HttpVerb("POST");
    req.put_Path("/oauth2/default/v1/token");
    req.put_ContentType("application/x-www-form-urlencoded");
    req.AddParam("grant_type","client_credentials");
    req.AddParam("scope","customScope");

    req.AddHeader("accept","application/json");

    CkHttpResponse resp;
    success = http.HttpReq("https://{yourOktaDomain}/oauth2/default/v1/token",req,resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp.GetBodySb(sbResponseBody);
    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    int respStatusCode = resp.get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp.header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

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

    //  {
    //    "access_token": "eyJraWQiO ... B2CnCLj7GRUW3mQ",
    //    "token_type": "Bearer",
    //    "expires_in": 3600,
    //    "scope": "customScope"
    //  }

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

    const char *access_token = jResp.stringOf("access_token");
    const char *token_type = jResp.stringOf("token_type");
    int expires_in = jResp.IntOf("expires_in");
    const char *scope = jResp.stringOf("scope");
    }