(Unicode 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 <CkHttpW.h>
#include <CkJsonObjectW.h>
#include <CkHttpResponseW.h>
#include <CkStringBuilderW.h>
#include <CkHashtableW.h>
#include <CkFileAccessW.h>

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

    CkHttpW http;

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

    // Load the access token previously obtained via the OAuth1 Authorization
    CkJsonObjectW jsonToken;
    bool success = jsonToken.LoadFile(L"qa_data/tokens/etrade.json");
    if (success != true) {
        wprintf(L"Failed to load OAuth1 token\n");
        return;
    }

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

    CkHttpResponseW *resp = http.QuickGetObj(L"https://api.etrade.com/oauth/renew_access_token");
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // Make sure a successful response was received.
    if (resp->get_StatusCode() != 200) {
        wprintf(L"%s\n",resp->statusLine());
        wprintf(L"%s\n",resp->header());
        wprintf(L"%s\n",resp->bodyStr());
        return;
    }

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

    CkStringBuilderW sbRespBody;
    resp->GetBodySb(sbRespBody);
    if (sbRespBody.ContentsEqual(L"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"
        wprintf(L"Keeping the same access token, but it's renewed...\n");
        return;
    }

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

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

    delete resp;

    // The access token + secret is what should be saved and used for
    // subsequent REST API calls.
    wprintf(L"Access Token = %s\n",accessToken);
    wprintf(L"Access Token Secret = %s\n",accessTokenSecret);

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

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

    wprintf(L"Success.\n");
    }