IMAP SSH Tunneling (Port Forwarding)

Demonstrates how to setup an SSH tunnel for IMAP.

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#include <CkImap.h>
#include <CkMessageSet.h>
#include <CkEmailBundle.h>
#include <CkEmail.h>

void ChilkatSample(void)
    {
    CkImap imap;

    bool success;

    //  Anything unlocks the component and begins a fully-functional 30-day trial.
    success = imap.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  Connect to an SSH server and establish the SSH tunnel:
    const char * sshHostname;
    long sshPort;
    //  The SSH hostname may be a hostname or an
    //  IP address, such as "192.168.1.108".
    //  The port is typically 22 (the standard port for SSH).
    sshHostname = "www.mysshserver.com";
    sshPort = 22;
    success = imap.SshTunnel(sshHostname,sshPort);
    if (success != true) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  Authenticate with the SSH server via a login/password
    //  or with a public key.
    //  This example demonstrates SSH password authentication.
    //  Note: This is not authenticating with the IMAP server, it is
    //  for authenticating with the SSH server, which is separate.
    success = imap.SshAuthenticatePw("mySshLogin","mySshPassword");
    if (success != true) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  OK, the SSH tunnel is setup.  The IMAP component may
    //  be used exactly the same as usual, except all communications
    //  are sent through the SSH tunnel.

    //  Connect to an IMAP server via the SSH tunnel.
    //  Because the SSH tunnel has been previously setup,
    //  this does not establish a direct connection with the IMAP
    //  server.  It directs the SSH server to establish the connection.
    success = imap.Connect("mail.chilkatsoft.com");
    if (success != true) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  Authenticate with the IMAP server via the SSH tunnel.
    success = imap.Login("myLogin","myPassword");
    if (success != true) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    CkMessageSet *messageSet = 0;
    //  We can choose to fetch UIDs or sequence numbers.
    bool fetchUids;
    fetchUids = true;
    //  Get the message IDs of all the emails in the mailbox
    messageSet = imap.Search("ALL",fetchUids);
    if (messageSet == 0 ) {
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  Fetch the emails into a bundle object:
    CkEmailBundle *bundle = 0;
    bundle = imap.FetchBundle(*messageSet);
    if (bundle == 0 ) {
        delete messageSet;
        printf("%s\n",imap.lastErrorText());
        return;
    }

    //  Loop over the bundle and display the FROM and SUBJECT of each.
    long i;
    for (i = 0; i <= bundle->get_MessageCount() - 1; i++) {
        CkEmail *email = 0;
        email = bundle->GetEmail(i);
        printf("%s\n",email->ck_from());
        printf("%s\n",email->subject());
        printf("--\n");
        delete email;
    }

    //  Disconnect from the IMAP server.
    imap.Disconnect();

    delete messageSet;
    delete bundle;
    }