(C++) ETrade Renew Access Token

Renews an ETrade OAuth access token.

For more information, see https://apisb.etrade.com/docs/api/authorization/renew_access_token.html

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#include <CkHttp.h>
#include <CkJsonObject.h>
#include <CkHttpResponse.h>
#include <CkStringBuilder.h>
#include <CkHashtable.h>
#include <CkFileAccess.h>

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

    CkHttp http;

    http.put_OAuth1(true);
    http.put_OAuthVerifier("");
    http.put_OAuthConsumerKey("ETRADE_CONSUMER_KEY");
    http.put_OAuthConsumerSecret("ETRADE_CONSUMER_SECRET");

    // Load the access token previously obtained via the OAuth1 Authorization
    CkJsonObject jsonToken;
    bool success = jsonToken.LoadFile("qa_data/tokens/etrade.json");
    if (success != true) {
        std::cout << "Failed to load OAuth1 token" << "\r\n";
        return;
    }

    http.put_OAuthToken(jsonToken.stringOf("oauth_token"));
    http.put_OAuthTokenSecret(jsonToken.stringOf("oauth_token_secret"));

    CkHttpResponse *resp = http.QuickGetObj("https://api.etrade.com/oauth/renew_access_token");
    if (http.get_LastMethodSuccess() != true) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    // Make sure a successful response was received.
    if (resp->get_StatusCode() != 200) {
        std::cout << resp->statusLine() << "\r\n";
        std::cout << resp->header() << "\r\n";
        std::cout << resp->bodyStr() << "\r\n";
        return;
    }

    // If successful, the resp.BodyStr contains something like this:
    // oauth_token=%3TiQRgQCRGPo7Xdk6G8QDSEzX0Jsy6sKNcULcDavAGgU%3D&oauth_token_secret=%7RrC9scEpzcwSEMy4vE7nodSzPLqfRINnTNY4voczyFM%3D
    std::cout << resp->bodyStr() << "\r\n";

    CkStringBuilder sbRespBody;
    resp->GetBodySb(sbRespBody);
    if (sbRespBody.ContentsEqual("Access Token has been renewed",false)) {
        // The documentation at https://apisb.etrade.com/docs/api/authorization/renew_access_token.html
        // indicates that the response should be as described above.  However, the response received when
        // trying to refresh a non-expired token was "Access Token has been renewed"
        std::cout << "Keeping the same access token, but it's renewed..." << "\r\n";
        return;
    }

    CkHashtable hashTab;
    hashTab.AddQueryParams(resp->bodyStr());

    const char *accessToken = hashTab.lookupStr("oauth_token");
    const char *accessTokenSecret = hashTab.lookupStr("oauth_token_secret");

    delete resp;

    // The access token + secret is what should be saved and used for
    // subsequent REST API calls.
    std::cout << "Access Token = " << accessToken << "\r\n";
    std::cout << "Access Token Secret = " << accessTokenSecret << "\r\n";

    // Save this access token for future calls.
    // Just in case we need user_id and screen_name, save those also..
    CkJsonObject json;
    json.AppendString("oauth_token",accessToken);
    json.AppendString("oauth_token_secret",accessTokenSecret);

    CkFileAccess fac;
    fac.WriteEntireTextFile("qa_data/tokens/etrade.json",json.emit(),"utf-8",false);

    std::cout << "Success." << "\r\n";
    }