(MFC) Twitter PIN-Based Authorization (Step 1)

Demonstrates the 1st step in Twitter PIN-based authorization using OAuth. The purpose of this step is to obtain a temporary request token that will be traded for an access token + secret in the final step. Once the access token + secret is obtained, the application can access the Twitter account in whatever ways it was authorized.

Note: The OAuth version 1 functionality demonstrated in this example is available in Chilkat v9.4.0 to be released approximately in mid-December 2012. Pre-releases are available upon request by sending email to support@chilkatsoft.com. (Please be sure to specify your programming language, operating system, framework, architecture, etc. to uniquely identify the build that is needed.)

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

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

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkHttp http;

    http.put_OAuth1(true);
    http.put_OAuthConsumerKey("my-consumer-key");
    http.put_OAuthConsumerSecret("my-consumer-secret");

    CkHttpRequest req;
    CkHttpResponse *resp = http.PostUrlEncoded("https://api.twitter.com/oauth/request_token",req);
    if (http.get_LastMethodSuccess() == false) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    if (resp->get_StatusCode() == 200) {

        const char *oauthToken = resp->urlEncParamValue(resp->bodyStr(),"oauth_token");
        strOut.append("OAuth temporary request token = ");
        strOut.append(oauthToken);
        strOut.append("\r\n");

        const char *oauthTokenSecret = resp->urlEncParamValue(resp->bodyStr(),"oauth_token_secret");
        strOut.append("OAuth temporary token secret = ");
        strOut.append(oauthTokenSecret);
        strOut.append("\r\n");

        const char *oauthCbConfirmed = resp->urlEncParamValue(resp->bodyStr(),"oauth_callback_confirmed");
        strOut.append("OAuth callback confirmed  = ");
        strOut.append(oauthCbConfirmed);
        strOut.append("\r\n");

        // At this point, the end-user needs to browse to the following
        // Twitter URL to log in to his/her Twitter account and get a PIN.
        // 
        // https://api.twitter.com/oauth/authenticate?oauth_token=OAUTH_TOKEN
        // 
        // (where OAUTH_TOKEN is replaced with the contents
        // of the OAuth temporary request token.)

        // Your application may have an embedded browser such
        // that it automatically navigates to the above URL, or it may
        // be necessary for the user to browse to this URL independently.

        // Once the PIN is obtained, your application should provide a means
        // for the end-user to enter it (by typing it into an input text box, for example), 
        // and then Step 2 (the final step) can begin.

    }
    else {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
    }

    delete resp;


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }