(Unicode C++) UPS OAuth2 Client Credentials

See more UPS Examples

Get an OAuth2 access token for the UPS REST API using the client credentials flow (no interactivity with a web browser required).

For more information, see https://developer.ups.com/api/reference?loc=en_US#tag/OAuthClientCredentials_other

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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 -i -X POST \
    //   -u 2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt:nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4 \
    //   https://wwwcie.ups.com/security/v1/oauth/token \
    //   -H 'Content-Type: application/x-www-form-urlencoded' \
    //   -H 'x-merchant-id: 7B3027' \
    //   -d grant_type=client_credentials

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    http.put_BasicAuth(true);
    http.put_Login(L"2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt");
    http.put_Password(L"nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4");

    CkHttpRequestW req;
    req.AddParam(L"grant_type",L"client_credentials");

    req.AddHeader(L"x-merchant-id",L"7B3027");

    CkHttpResponseW *resp = http.PostUrlEncoded(L"https://wwwcie.ups.com/security/v1/oauth/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;

    // Save the OAuth2 access token for other examples to use.
    jResp.WriteFile(L"qa_data/tokens/ups_oauth2_token.json");

    // If successful, the OAuth2 access token JSON looks like this:

    // {
    //   "token_type": "Bearer",
    //   "issued_at": "1686911985606",
    //   "client_id": "2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt",
    //   "access_token": "eyJraW......R2sbqrY",
    //   "expires_in": "14399",
    //   "status": "approved"
    // }

    const wchar_t *token_type = jResp.stringOf(L"token_type");
    const wchar_t *issued_at = jResp.stringOf(L"issued_at");
    const wchar_t *client_id = jResp.stringOf(L"client_id");
    const wchar_t *access_token = jResp.stringOf(L"access_token");
    const wchar_t *expires_in = jResp.stringOf(L"expires_in");
    const wchar_t *status = jResp.stringOf(L"status");
    }