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(Visual FoxPro) IMAP Download and Verify Signed (S/MIME) EmailDemonstrates how to download and verify digitally signed S/MIME email. Note: This example requires Chilkat v11.0.0 or greater.
LOCAL lnSuccess LOCAL loImap LOCAL lnFetchUids LOCAL loMessageSet LOCAL loEmail LOCAL loCert LOCAL i LOCAL lcUid lnSuccess = 0 * This example requires the Chilkat API to have been previously unlocked. * See Global Unlock Sample for sample code. loImap = CreateObject('Chilkat.Imap') * Connect to an IMAP server. * Use TLS loImap.Ssl = 1 loImap.Port = 993 lnSuccess = loImap.Connect("imap.example.com") IF (lnSuccess = 0) THEN ? loImap.LastErrorText RELEASE loImap CANCEL ENDIF lnSuccess = loImap.Login("myLogin","myPassword") IF (lnSuccess = 0) THEN ? loImap.LastErrorText RELEASE loImap CANCEL ENDIF * Select an IMAP mailbox lnSuccess = loImap.SelectMailbox("Inbox") IF (lnSuccess = 0) THEN ? loImap.LastErrorText RELEASE loImap CANCEL ENDIF * We can choose to fetch UIDs or sequence numbers. lnFetchUids = 1 * Get the message IDs of all the emails in the mailbox loMessageSet = CreateObject('Chilkat.MessageSet') lnSuccess = loImap.QueryMbx("ALL",lnFetchUids,loMessageSet) IF (lnSuccess = 0) THEN ? loImap.LastErrorText RELEASE loImap RELEASE loMessageSet CANCEL ENDIF loEmail = CreateObject('Chilkat.Email') loCert = CreateObject('Chilkat.Cert') i = 0 DO WHILE i < loMessageSet.Count lcUid = loMessageSet.GetId(i) ? "uid: " + lcUid lnSuccess = loImap.FetchEmail(0,lcUid,1,loEmail) IF (lnSuccess = 0) THEN ? loImap.LastErrorText RELEASE loImap RELEASE loMessageSet RELEASE loEmail RELEASE loCert CANCEL ENDIF * The security layers of signed and/or encrypted emails * are automatically "unwrapped" when loaded into * a Chilkat email object. * An application only needs to check to see if an email * was received signed or encrypted, and then examine * the success/failure. For example: IF (loEmail.ReceivedSigned = 1) THEN ? "This email was signed." * Check to see if the signatures were verified. IF (loEmail.SignaturesValid = 1) THEN ? "Digital signature(s) verified." ? "Signer: " + loEmail.SignedBy * Get the certificate used for signing. lnSuccess = loEmail.LastSignerCert(0,loCert) IF (lnSuccess = 0) THEN ? "Failed to get signing certificate object." ELSE ? "Signing cert: " + loCert.SubjectCN ENDIF ELSE ? "Digital signature verification failed." ENDIF ENDIF i = i + 1 ENDDO * Disconnect from the IMAP server. lnSuccess = loImap.Disconnect() RELEASE loImap RELEASE loMessageSet RELEASE loEmail RELEASE loCert |
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