PowerBuilder

IMAP Read PEC Email of Aruba and Extract the Invoice XML Files

See more Email Object Examples

IMAP Read PEC Email of Aruba and Extract the Invoice XML Files. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Imap
integer li_FetchUids
oleobject loo_MessageSet
oleobject loo_Email
oleobject loo_AttachedEmail
oleobject loo_SbMime
oleobject loo_Mime
oleobject loo_BdP7m
oleobject loo_MimeP7m
oleobject loo_Crypt
oleobject loo_Xml

li_Success = 0

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

loo_Imap = create oleobject
li_rc = loo_Imap.ConnectToNewObject("Chilkat.Imap")
if li_rc < 0 then
    destroy loo_Imap
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Connect using TLS.
loo_Imap.Ssl = 1
loo_Imap.Port = 993
li_Success = loo_Imap.Connect("imap.example.com")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

// Authenticate
li_Success = loo_Imap.Login("email_account_login","email_account_password")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

// Select an IMAP mailbox
li_Success = loo_Imap.SelectMailbox("Inbox/postacert")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

// Search for messages having "POSTA CERTIFICATA: Invio File" in the subject.
li_FetchUids = 1
loo_MessageSet = create oleobject
li_rc = loo_MessageSet.ConnectToNewObject("Chilkat.MessageSet")

li_Success = loo_Imap.QueryMbx("SUBJECT ~"POSTA CERTIFICATA: Invio File~"",li_FetchUids,loo_MessageSet)
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_MessageSet
    return
end if

if loo_MessageSet.Count < 1 then
    Write-Debug "No messages found."
    destroy loo_Imap
    destroy loo_MessageSet
    return
end if

// For our example, we'll process only the 1st email in the messageSet.
// Download the MIME source of the email into a StringBuilder object.
loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")

li_Success = loo_Imap.FetchEmail(0,loo_MessageSet.GetId(0),loo_MessageSet.HasUids,loo_Email)
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_MessageSet
    destroy loo_Email
    return
end if

// The email should contain an attached email.
// The Invoice XML is contained within the attached email.
loo_AttachedEmail = create oleobject
li_rc = loo_AttachedEmail.ConnectToNewObject("Chilkat.Email")

li_Success = loo_Email.GetAttachedEmail(0,loo_AttachedEmail)
if li_Success = 0 then
    Write-Debug loo_Email.LastErrorText
    destroy loo_Imap
    destroy loo_MessageSet
    destroy loo_Email
    destroy loo_AttachedEmail
    return
end if

// Get the MIME of the attached email..
loo_SbMime = create oleobject
li_rc = loo_SbMime.ConnectToNewObject("Chilkat.StringBuilder")

li_Success = loo_AttachedEmail.GetMimeSb(loo_SbMime)

// Load it into a Chilkat MIME object.
loo_Mime = create oleobject
li_rc = loo_Mime.ConnectToNewObject("Chilkat.Mime")

li_Success = loo_Mime.LoadMimeSb(loo_SbMime)

// Examine the structure of the MIME.
Write-Debug loo_Mime.GetStructure("text")

// The MIME has this structure:
// multipart/mixed
//     application/octet-stream
//     application/octet-stream     <-- This is where the XML is contained.   It is within an opaque signature.
//     text/plain

// The 2nd application/octet-stream MIME header looks like this:

// ------=_Part_329673_-1348225228.1579889273592
// Content-Type: application/octet-stream; name="SM99999_99aaa.xml.p7m"
// Content-Transfer-Encoding: base64
// Content-Disposition: attachment; filename="SM99999_99aaa.xml.p7m"

// Let's get the binary content of the .p7m
loo_BdP7m = create oleobject
li_rc = loo_BdP7m.ConnectToNewObject("Chilkat.BinData")

// Get the 2nd sub-part, at index 1 because index 0 is the 1st sub-part.

loo_MimeP7m = create oleobject
li_rc = loo_MimeP7m.ConnectToNewObject("Chilkat.Mime")

li_Success = loo_Mime.PartAt(1,loo_MimeP7m)
if li_Success = 0 then
    Write-Debug loo_Mime.LastErrorText
    destroy loo_Imap
    destroy loo_MessageSet
    destroy loo_Email
    destroy loo_AttachedEmail
    destroy loo_SbMime
    destroy loo_Mime
    destroy loo_BdP7m
    destroy loo_MimeP7m
    return
end if

if loo_Mime.LastMethodSuccess <> 1 then
    Write-Debug "Failed to get 2nd sub-part. Perhaps the MIME does not have a 2nd sub-part?"
    destroy loo_Imap
    destroy loo_MessageSet
    destroy loo_Email
    destroy loo_AttachedEmail
    destroy loo_SbMime
    destroy loo_Mime
    destroy loo_BdP7m
    destroy loo_MimeP7m
    return
end if

li_Success = loo_MimeP7m.GetBodyBd(loo_BdP7m)

// Verify the signature, which also extracts the content contained within the opaque signature.
loo_Crypt = create oleobject
li_rc = loo_Crypt.ConnectToNewObject("Chilkat.Crypt2")

li_Success = loo_Crypt.OpaqueVerifyBd(loo_BdP7m)
if li_Success = 0 then
    Write-Debug loo_Crypt.LastErrorText
    destroy loo_Imap
    destroy loo_MessageSet
    destroy loo_Email
    destroy loo_AttachedEmail
    destroy loo_SbMime
    destroy loo_Mime
    destroy loo_BdP7m
    destroy loo_MimeP7m
    destroy loo_Crypt
    return
end if

// The bdP7m now contains the Invoice XML.
// Load it into an XML object.
loo_Xml = create oleobject
li_rc = loo_Xml.ConnectToNewObject("Chilkat.Xml")

li_Success = loo_Xml.LoadBd(loo_BdP7m,1)

Write-Debug loo_Xml.GetXml()

// We have XML such as the following:
// 
// <?xml version="1.0" encoding="windows-1252"?>
// <?xml-stylesheet type="text/xsl" href="fatturapa_v1.2.xsl"?>
// <p:FatturaElettronica versione="FPR12" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" 
//     xmlns:p="http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2" 
//     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
//     <FatturaElettronicaHeader>
// 	...
//     </FatturaElettronicaHeader>
//     <FatturaElettronicaBody>
// 	...
//     </FatturaElettronicaBody>
// </p:FatturaElettronica>

// Use this online tool to generate parsing code from sample XML: 
// Generate Parsing Code from XML

Write-Debug "success."


destroy loo_Imap
destroy loo_MessageSet
destroy loo_Email
destroy loo_AttachedEmail
destroy loo_SbMime
destroy loo_Mime
destroy loo_BdP7m
destroy loo_MimeP7m
destroy loo_Crypt
destroy loo_Xml