(Unicode C++) Okta: Use the Resource Owner Password Flow

Demonstrates how to get an access token using the Resource Owner Password Flow.

For more information, see https://developer.okta.com/docs/guides/implement-password/use-flow/

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#include <CkHttpW.h>
#include <CkHttpRequestW.h>
#include <CkHttpResponseW.h>
#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>

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

    CkHttpW http;
    bool success;

    // 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 'content-type: application/x-www-form-urlencoded' \
    //   --data 'grant_type=password&username=myUserEmail&password=myPassword&scope=openid'

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

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    req.put_Path(L"/oauth2/default/v1/token");
    req.put_ContentType(L"application/x-www-form-urlencoded");
    req.AddParam(L"grant_type",L"password");
    req.AddParam(L"username",L"myUserEmail");
    req.AddParam(L"password",L"myPassword");
    req.AddParam(L"scope",L"openid");

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

    CkHttpResponseW *resp = http.PostUrlEncoded(L"https://{yourOktaDomain}/oauth2/default/v1/token",req);
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkStringBuilderW sbResponseBody;
    resp->GetBodySb(sbResponseBody);
    CkJsonObjectW jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    int respStatusCode = resp->get_StatusCode();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",resp->header());
        wprintf(L"Failed.\n");
        delete resp;
        return;
    }

    delete resp;

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

    // {
    //   "access_token": "eyJraWQiOi ... jmiHD7wY9_gQ",
    //   "token_type": "Bearer",
    //   "expires_in": 3600,
    //   "scope": "openid",
    //   "id_token": "eyJraWQiOiJ ... W7KkWiPJnUSMoGw"
    // }

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

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

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