IMAP SSH Tunneling (Port Forwarding)

Demonstrates how to setup an SSH tunnel for IMAP.

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MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <C_CkImap.h>
#include <C_CkMessageSet.h>
#include <C_CkEmailBundle.h>
#include <C_CkEmail.h>

void ChilkatSample(void)
    {
    HCkImap imap;
    BOOL success;
    const char * sshHostname;
    long sshPort;
    HCkMessageSet messageSet;
    BOOL fetchUids;
    HCkEmailBundle bundle;
    long i;
    HCkEmail email;

    imap = CkImap_Create();

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

    //  Connect to an SSH server and establish the SSH tunnel:

    //  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 = CkImap_SshTunnel(imap,sshHostname,sshPort);
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        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 = CkImap_SshAuthenticatePw(imap,"mySshLogin","mySshPassword");
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        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 = CkImap_Connect(imap,"mail.chilkatsoft.com");
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        return;
    }

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

    //  Select an IMAP mailbox
    success = CkImap_SelectMailbox(imap,"Inbox");
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        return;
    }

    //  We can choose to fetch UIDs or sequence numbers.

    fetchUids = TRUE;
    //  Get the message IDs of all the emails in the mailbox
    messageSet = CkImap_Search(imap,"ALL",fetchUids);
    if (messageSet == 0 ) {
        printf("%s\n",CkImap_lastErrorText(imap));
        return;
    }

    //  Fetch the emails into a bundle object:

    bundle = CkImap_FetchBundle(imap,messageSet);
    if (bundle == 0 ) {
        CkMessageSet_Dispose(messageSet);
        printf("%s\n",CkImap_lastErrorText(imap));
        return;
    }

    //  Loop over the bundle and display the FROM and SUBJECT of each.

    for (i = 0; i <= CkEmailBundle_getMessageCount(bundle) - 1; i++) {

        email = CkEmailBundle_GetEmail(bundle,i);
        printf("%s\n",CkEmail_ck_from(email));
        printf("%s\n",CkEmail_subject(email));
        printf("--\n");
        CkEmail_Dispose(email);
    }

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

    CkMessageSet_Dispose(messageSet);
    CkEmailBundle_Dispose(bundle);

    CkImap_Dispose(imap);

    }