Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save attachments.

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

    CkString strOut;

    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) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Connect to an IMAP server.
    success = imap.Connect("mail.chilkatsoft.com");
    if (success != true) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Login
    success = imap.Login("admin@chilkatsoft.com","*myPassword5*");
    if (success != true) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        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 ) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Fetch the email headers into a bundle object:
    CkEmailBundle *bundle = 0;
    bundle = imap.FetchHeaders(*messageSet);
    if (bundle == 0 ) {
        delete messageSet;
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Scan for emails with attachments, and save the attachments
    //  to a sub-directory.
    long i;
    for (i = 0; i <= bundle->get_MessageCount() - 1; i++) {
        CkEmail *email = 0;
        email = bundle->GetEmail(i);

        //  Does this email have attachments?
        //  Use GetMailNumAttach because the attachments
        //  are not actually in the email object because
        //  we only downloaded headers.
        //  (Had we downloaded the full emails by
        //  calling mailman.FetchBundle, we could look
        //  at the email object's NumAttachments property.)
        long numAttach;
        numAttach = imap.GetMailNumAttach(*email);

        if (numAttach > 0) {
            //  Download the entire email and save the
            //  attachments. (Remember, we
            //  need to download the entire email because
            //  only the headers were previously downloaded.
            //  If the entire emails were downloaded by
            //  calling FetchBundle instead of FetchHeaders,
            //  this would not be necessary.

            //  The ckx-imap-uid header field is added when
            //  headers are downloaded.  This makes it possible
            //  to get the UID from the email object.
            const char * uidStr;
            uidStr = email->getHeaderField("ckx-imap-uid");
            long uid;
            uid = atoi(uidStr);

            CkEmail *fullEmail = 0;
            fullEmail = imap.FetchSingle(uid,true);
            if (!(fullEmail == 0 )) {
                fullEmail->SaveAllAttachments("attachmentsDir");
                delete fullEmail;
            }

            long j;
            for (j = 0; j <= numAttach - 1; j++) {
                const char * filename;
                filename = imap.getMailAttachFilename(*email,j);
                strOut.append(filename);
                strOut.append("\r\n");
            }

        }

        delete email;
    }

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

    delete messageSet;
    delete bundle;

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());