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(Visual FoxPro) IMAP Download and Verify Signed MIMEDownloads the original MIME of a digitally signed email and saves the .p7s signature along with other MIME parts. It then imports the email into a Chilkat email object to unwrap the S/MIME and verify the signature, and subsequently saves the attachments if they haven't been saved already. Note: This example requires Chilkat v11.0.0 or greater.
LOCAL lnSuccess LOCAL loImap LOCAL loSbMime LOCAL loMime LOCAL lnAlreadySavedParts LOCAL loSt LOCAL lnNumFiles LOCAL i LOCAL loEmail LOCAL loCert 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 * Download the 1st email (as MIME) in the Inbox by sequence number. loSbMime = CreateObject('Chilkat.StringBuilder') lnSuccess = loImap.FetchSingleAsMimeSb(1,0,loSbMime) IF (lnSuccess = 0) THEN ? loImap.LastErrorText RELEASE loImap RELEASE loSbMime CANCEL ENDIF * Load it into a MIME object and check to see if it is signed loMime = CreateObject('Chilkat.Mime') loMime.LoadMimeSb(loSbMime) lnAlreadySavedParts = 0 IF (loMime.ContainsSignedParts() = 1) THEN * This will save the .p7s and other parts... loSt = CreateObject('Chilkat.StringTable') lnSuccess = loMime.PartsToFiles("c:/temp/qa_output",loSt) IF (lnSuccess = 1) THEN lnNumFiles = loSt.Count i = 0 DO WHILE i < lnNumFiles ? "Created: " + loSt.StringAt(i) i = i + 1 ENDDO lnAlreadySavedParts = 1 ENDIF ENDIF * Load the MIME into an Email object. This unwraps the security layers and verifies signatures. loEmail = CreateObject('Chilkat.Email') loEmail.SetFromMimeSb(loSbMime) 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 * The certificate used for signing may be obtained * by calling email.GetSignedByCert. loCert = CreateObject('Chilkat.Cert') lnSuccess = loEmail.LastSignerCert(i,loCert) IF (lnSuccess = 0) THEN ? "Failed to get signing certificate object." ELSE ? "Signing cert: " + loCert.SubjectCN ENDIF ENDIF ELSE ? "Digital signature verification failed." ENDIF IF (lnAlreadySavedParts <> 1) THEN loEmail.SaveAllAttachments("c:/temp/qa_output") ENDIF RELEASE loImap RELEASE loSbMime RELEASE loMime RELEASE loSt RELEASE loEmail RELEASE loCert |
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