(C++) Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save attachments.

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

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

    CkImap imap;

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    bool success = imap.Connect("imap.someMailServer.com");
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Login
    success = imap.Login("myLogin","myPassword");
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    CkMessageSet *messageSet = 0;
    // We can choose to fetch UIDs or sequence numbers.
    bool fetchUids = true;

    // Get the message IDs of all the emails in the mailbox
    messageSet = imap.Search("ALL",fetchUids);
    if (imap.get_LastMethodSuccess() != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Fetch the email headers into a bundle object:
    CkEmailBundle *bundle = 0;
    bundle = imap.FetchHeaders(*messageSet);
    if (imap.get_LastMethodSuccess() != true) {
        delete messageSet;
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Scan for emails with attachments, and save the attachments
    // to a sub-directory.
    int 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.)
        int 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 = email->getHeaderField("ckx-imap-uid");
            int uid = atoi(uidStr);

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

            int j;
            for (j = 0; j <= numAttach - 1; j++) {
                const char *filename = imap.getMailAttachFilename(*email,j);
                std::cout << filename << "\r\n";
            }

        }

        delete email;
    }

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

    delete messageSet;
    delete bundle;
    }