C++

Secure FTP with Client Certificate

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Chilkat FTP2 provides the ability to use a client certificate with secure FTP (implicit or explicit SSL/TLS). This example demonstrates how to load a certificate from a .pfx and use it as the client-side SSL cert. Note: Client-side certificates are only needed in situations where the server demands one. C++

#include <CkFtp2.h>
#include <CkCertStore.h>
#include <CkJsonObject.h>
#include <CkCert.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkFtp2 ftp;

    ftp.put_Hostname("ftp.example.com");
    ftp.put_Port(21);
    ftp.put_Username("test");
    ftp.put_Password("test");

    //  This example will use explict TLS/SSL.
    //  Establish an explicit secure channel after connection
    //  on the standard FTP port 21.
    ftp.put_AuthTls(true);

    //  The Ssl property is for establishing an implicit SSL connection
    //  on port 990.  Because this example uses explicit SSL, it 
    //  should remain false.
    ftp.put_Ssl(false);

    //  Load a certificate from a .pfx
    //  A PFX may contain several certs, including the certificates
    //  in a chain of authority.
    CkCertStore certStore;
    const char *password = 0;
    password = "***";
    //  Load the certs from a PFX into an in-memory certificate store:
    success = certStore.LoadPfxFile("chilkat.pfx",password);
    if (success != true) {
        std::cout << certStore.lastErrorText() << "\r\n";
        return;
    }

    //  Find the desired certificate.
    CkJsonObject jsonCN;
    jsonCN.UpdateString("CN","cert common name");

    CkCert cert;
    success = certStore.FindCert(jsonCN,cert);
    if (success == false) {
        std::cout << "Certificate not found!" << "\r\n";
        return;
    }

    //  Use this certificate for our secure (SSL/TLS) connection:
    success = ftp.SetSslClientCert(cert);

    //  Connect and login to the FTP server.  The connection is 
    //  made secure because of the AuthTls setting.
    success = ftp.Connect();
    if (success != true) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }
    else {
        //  LastErrorText contains information even when
        //  successful. This allows you to visually verify
        //  that the secure connection actually occurred.
        std::cout << ftp.lastErrorText() << "\r\n";
    }

    std::cout << "Secure FTP Channel Established!" << "\r\n";

    //  Do whatever you're doing to do ...
    //  upload files, download files, etc...

    //  .....
    //  .....

    success = ftp.Disconnect();
    }