(PHP Extension) IMAP Read PEC Email of Aruba and Extract the Invoice XML Files

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

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$imap = new CkImap();

// Connect using TLS.
$imap->put_Ssl(true);
$imap->put_Port(993);
$success = $imap->Connect('imap.example.com');
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// Authenticate
$success = $imap->Login('email_account_login','email_account_password');
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// Select an IMAP mailbox
$success = $imap->SelectMailbox('Inbox/postacert');
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// Search for messages having "POSTA CERTIFICATA: Invio File" in the subject.
$fetchUids = true;
// messageSet is a CkMessageSet
$messageSet = $imap->Search('SUBJECT \'POSTA CERTIFICATA: Invio File\'',$fetchUids);
if ($imap->get_LastMethodSuccess() == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

if ($messageSet->get_Count() < 1) {
    print 'No messages found.' . "\n";

    exit;
}

// For our example, we'll process only the 1st email in the messageSet.
// Download the MIME source of the email into a StringBuilder object.
// email is a CkEmail
$email = $imap->FetchSingle($messageSet->GetId(0),$messageSet->get_HasUids());
if ($imap->get_LastMethodSuccess() == false) {
    print $imap->lastErrorText() . "\n";

    exit;
}

// The email should contain an attached email.
// The Invoice XML is contained within the attached email.
// attachedEmail is a CkEmail
$attachedEmail = $email->GetAttachedMessage(0);
if ($email->get_LastMethodSuccess() == false) {
    print $email->lastErrorText() . "\n";

    exit;
}

// Get the MIME of the attached email..
$sbMime = new CkStringBuilder();
$success = $attachedEmail->GetMimeSb($sbMime);

// Load it into a Chilkat MIME object.
$mime = new CkMime();
$success = $mime->LoadMimeSb($sbMime);

// Examine the structure of the MIME.
print $mime->getStructure('text') . "\n";

// 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
$bdP7m = new CkBinData();
// Get the 2nd sub-part, at index 1 because index 0 is the 1st sub-part.
// mimeP7m is a CkMime
$mimeP7m = $mime->GetPart(1);
if ($mime->get_LastMethodSuccess() != true) {
    print 'Failed to get 2nd sub-part. Perhaps the MIME does not have a 2nd sub-part?' . "\n";
    exit;
}

$success = $mimeP7m->GetBodyBd($bdP7m);

// Verify the signature, which also extracts the content contained within the opaque signature.
$crypt = new CkCrypt2();
$success = $crypt->OpaqueVerifyBd($bdP7m);
if ($success == false) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

// The bdP7m now contains the Invoice XML.
// Load it into an XML object.
$xml = new CkXml();
$success = $xml->LoadBd($bdP7m,true);

print $xml->getXml() . "\n";

// 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

print 'success.' . "\n";

?>