(DataFlex) POP3 Read S/MIME Encrypted Email

Read S/MIME encrypted email.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoMailman
    Boolean iSuccess
    Variant vBundle
    Handle hoBundle
    Integer i
    Variant vEmail
    Handle hoEmail
    String sTemp1
    Boolean bTemp1

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // The mailman object is used for receiving (POP3) 
    // and sending (SMTP) email.
    Get Create (RefClass(cComChilkatMailMan)) To hoMailman
    If (Not(IsComObjectCreated(hoMailman))) Begin
        Send CreateComObject of hoMailman
    End

    // Set the POP3 server's hostname
    Set ComMailHost Of hoMailman To "pop.someMailServer.com"

    // Set the POP3 login/password.
    Set ComPopUsername Of hoMailman To "myLogin"
    Set ComPopPassword Of hoMailman To "myPassword"

    // If running on Microsoft Windows, the Chilkat mailman
    // will automatically search the registry-based certificate stores
    // for matching certificates and private keys required for
    // decryption.  However, on Linux, MAX OS X, and other
    // operating systems, no such thing exists.  Therefore, you'll 
    // need to specify one or more PFX (.p12 / .pfx) files as
    // sources for locating the certs required for decyrption.
    Get ComAddPfxSourceFile Of hoMailman "/pfxFiles/certs_and_keys_1.pfx" "pfxPassword1" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoMailman To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComAddPfxSourceFile Of hoMailman "/pfxFiles/certs_and_keys_2.pfx" "pfxPassword2" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoMailman To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // ...
    // Note: On MS Windows, it is not required to provide PFX sources
    // if the needed certs and private keys are already installed
    // on the system (in the registry-based certificate stores).

    // Copy the all email from the user's POP3 mailbox 
    // into a bundle object.  The email remains on the server.
    Get ComCopyMail Of hoMailman To vBundle
    If (IsComObject(vBundle)) Begin
        Get Create (RefClass(cComChilkatEmailBundle)) To hoBundle
        Set pvComObject Of hoBundle To vBundle
    End
    Get ComLastMethodSuccess Of hoMailman To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoMailman To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // S/MIME security envelopes are automatically "unwrapped" 
    // when a message is retrieved from the server. Signed emails are automatically verified, and 
    // encrypted emails are automatically decrypted, restoring the email to the original state before 
    // signing and/or encrypting. Information about the signing and encrypting certificates can be 
    // retrieved from the Email object (methods: GetSignedByCert, GetEncryptedByCert; 
    // properties: SignedBy, EncryptedBy, SignaturesValid, Decrypted, ReceivedSigned, 
    // ReceivedEncrypted).

    // Loop over the bundle, 
    Move 0 To i
    While (i < (ComMessageCount(hoBundle)))

        Get ComGetEmail Of hoBundle i To vEmail
        If (IsComObject(vEmail)) Begin
            Get Create (RefClass(cComChilkatEmail)) To hoEmail
            Set pvComObject Of hoEmail To vEmail
        End

        Get ComFrom Of hoEmail To sTemp1
        Showln sTemp1
        Get ComSubject Of hoEmail To sTemp1
        Showln sTemp1

        // At this point, if the email was signed and/or encrypted, it is already "unwrapped", i.e.
        // the email is already decrypted and in a state as if it were never signed or encrypted.
        // You may check to see if the email was received encrypted or signed, and if so,
        // whether it was successfully unwrapped and who signed or encrypted it:
        Get ComReceivedEncrypted Of hoEmail To bTemp1
        If (bTemp1 = True) Begin

            Showln "This email was encrypted when received."
            Get ComDecrypted Of hoEmail To bTemp1
            If (bTemp1 = True) Begin
                Showln "This email was successfully decrypted.  It was encrypted by:"
                Get ComEncryptedBy Of hoEmail To sTemp1
                Showln sTemp1
            End
            Else Begin
                Showln "This email was not decrypted."
            End

        End

        Get ComReceivedSigned Of hoEmail To bTemp1
        If (bTemp1 = True) Begin

            Showln "This email was signed when received."
            Get ComSignaturesValid Of hoEmail To bTemp1
            If (bTemp1 = True) Begin
                Showln "The signature was verified.  It was signed by:"
                Get ComSignedBy Of hoEmail To sTemp1
                Showln sTemp1
            End
            Else Begin
                Showln "The signature verification failed."
            End

        End

        // The email's body, HTML body, attachments, etc.
        // are decrypted and available just like any non-encrypted email.

        Showln "--"
        Send Destroy of hoEmail

        Move i + 1 To i
    Loop

    Send Destroy of hoBundle


End_Procedure