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(Ruby) 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.
require 'chilkat' success = false # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. imap = Chilkat::CkImap.new() # Connect to an IMAP server. # Use TLS imap.put_Ssl(true) imap.put_Port(993) success = imap.Connect("imap.example.com") if (success == false) print imap.lastErrorText() + "\n"; exit end success = imap.Login("myLogin","myPassword") if (success == false) print imap.lastErrorText() + "\n"; exit end # Select an IMAP mailbox success = imap.SelectMailbox("Inbox") if (success == false) print imap.lastErrorText() + "\n"; exit end # Download the 1st email (as MIME) in the Inbox by sequence number. sbMime = Chilkat::CkStringBuilder.new() success = imap.FetchSingleAsMimeSb(1,false,sbMime) if (success == false) print imap.lastErrorText() + "\n"; exit end # Load it into a MIME object and check to see if it is signed mime = Chilkat::CkMime.new() mime.LoadMimeSb(sbMime) alreadySavedParts = false if (mime.ContainsSignedParts() == true) # This will save the .p7s and other parts... st = Chilkat::CkStringTable.new() success = mime.PartsToFiles("c:/temp/qa_output",st) if (success == true) numFiles = st.get_Count() i = 0 while i < numFiles print "Created: " + st.stringAt(i) + "\n"; i = i + 1 end alreadySavedParts = true end end # Load the MIME into an Email object. This unwraps the security layers and verifies signatures. email = Chilkat::CkEmail.new() email.SetFromMimeSb(sbMime) if (email.get_ReceivedSigned() == true) print "This email was signed." + "\n"; # Check to see if the signatures were verified. if (email.get_SignaturesValid() == true) print "Digital signature(s) verified." + "\n"; print "Signer: " + email.signedBy() + "\n"; # The certificate used for signing may be obtained # by calling email.GetSignedByCert. cert = Chilkat::CkCert.new() success = email.LastSignerCert(i,cert) if (success == false) print "Failed to get signing certificate object." + "\n"; else print "Signing cert: " + cert.subjectCN() + "\n"; end end else print "Digital signature verification failed." + "\n"; end if (alreadySavedParts != true) email.SaveAllAttachments("c:/temp/qa_output") end |
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