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(MFC) REST through SSH Tunnel

Demonstrates how to connect through an SSH Tunnel (via port-forwarding) to make REST API calls.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

// Needs #include <CkSocket.h>
// Needs #include <CkRest.h>
// Needs #include <CkAuthAws.h>
// Needs #include <CkXml.h>

    CkString strOut;

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

    CkSocket tunnel;

    const char *sshHostname = "www.my-ssh-server.com";
    int sshPort = 22;

    //  Connect to an SSH server and establish the SSH tunnel:
    bool success = tunnel.SshOpenTunnel(sshHostname,sshPort);
    if (success != true) {
        strOut.append(tunnel.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Authenticate with the SSH server via a login/password
    //  or with a public key.
    //  This example demonstrates SSH password authentication.
    success = tunnel.SshAuthenticatePw("mySshLogin","mySshPassword");
    if (success != true) {
        strOut.append(tunnel.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //   OK, the SSH tunnel is setup.  Now open a channel within the tunnel.
    //   (Any number of channels may be created from the same SSH tunnel.
    //   Multiple channels may coexist at the same time.)

    //  This example connects to a REST server through the SSH tunnel.
    //  It will connect to the Amazon AWS service for this example.
    CkRest rest;
    CkSocket *channel = 0;

    bool bTls = true;
    int port = 443;
    int maxWaitMs = 5000;

    //  This returns a socket object that is a single channel within the SSH tunnel.
    channel = tunnel.SshOpenChannel("s3.amazonaws.com",port,bTls,maxWaitMs);
    if (tunnel.get_LastMethodSuccess() != true) {
        strOut.append(tunnel.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Use the connection.  (This connection is a TLS running on an SSH channel through an SSH tunnel.
    //  In other words, TLS is wrapped within the SSH tunnel.)
    success = rest.UseConnection(*channel,true);
    if (success != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        delete channel;
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Provide AWS credentials for the REST call.
    CkAuthAws authAws;
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("s3");
    success = rest.SetAuthAws(authAws);

    //  List all buckets for the account...
    const char *responseXml = rest.fullRequestNoBody("GET","/");
    if (rest.get_LastMethodSuccess() != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        delete channel;
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkXml xml;
    success = xml.LoadXml(responseXml);

    //  Show the full XML returned.
    strOut.append(xml.getXml());
    strOut.append("\r\n");

    //  Iterate over the buckets, showing each bucket name.
    success = xml.FindChild2("Buckets");
    if (xml.FirstChild2() == true) {
        strOut.append(xml.getChildContent("Name"));
        strOut.append("\r\n");
        while ((xml.NextSibling2() == true)) {
            strOut.append(xml.getChildContent("Name"));
            strOut.append("\r\n");
        }

    }

    //  Move the internal pointer back to the root node.
    xml.GetRoot2();

    delete channel;


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

 

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