From dcdbb6b64c98d4925ec976205726e575ba57d638 Mon Sep 17 00:00:00 2001
From: Thomas Zilio <Dasc3er@users.noreply.github.com>
Date: Fri, 7 Dec 2018 10:56:49 +0100
Subject: [PATCH] Aggiunta importazione P7M

---
 CHANGELOG.md                                |   1 +
 plugins/importFE/rows.php                   |  27 ++++-
 plugins/importFE/src/FatturaElettronica.php |  12 +--
 src/Util/XML.php                            | 112 ++++++++++++++++++++
 4 files changed, 143 insertions(+), 9 deletions(-)
 create mode 100644 src/Util/XML.php

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ddc2ff79..02bd59614 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -46,6 +46,7 @@ Il formato utilizzato è basato sulle linee guida di [Keep a Changelog](http://k
 ### Aggiunto (Added)
 
  - Nodi secondari per la Fatturazione Elettronica
+ - Importazione di Fatture Elettroniche in formato P7M
  - Messaggi informativi in vari campi
 
 ### Fixed
diff --git a/plugins/importFE/rows.php b/plugins/importFE/rows.php
index 247d74a23..4acafc460 100644
--- a/plugins/importFE/rows.php
+++ b/plugins/importFE/rows.php
@@ -69,7 +69,10 @@ $righe = $fattura_pa->getRighe();
 
 if (!empty($righe)) {
     echo '
-    <h4>'.tr('Righe').'</h4>
+    <h4>
+        '.tr('Righe').'
+        <button type="button" class="btn btn-warning btn small pull-right" onclick="copy()"><i class="fa fa-copy"></i> '.tr('Copia IVA e conto da prima riga').'</button>
+    </h4>
 
     <div class="table-responsive">
         <table class="table table-hover table-striped table-condensed">
@@ -111,9 +114,29 @@ if (!empty($righe)) {
     echo '
         </table>
     </div>';
+
+    echo '
+    <script>
+    function copy(){
+        $iva = $("select[name^=iva").first().selectData();
+        $conto = $("select[name^=conto").first().selectData();
+
+        if($iva) {
+            $("select[name^=iva").each(function(){
+                $(this).selectSet($iva.id);
+            });
+        }
+
+        if($conto) {
+            $("select[name^=conto").each(function(){
+                $(this).selectSetNew($conto.id, $conto.text);
+            });
+        }
+    }
+    </script>';
 } else {
     echo '
-    <p>Non ci sono righe nella fattura.</p>';
+    <p>'.tr('Non ci sono righe nella fattura').'.</p>';
 }
 
 echo '
diff --git a/plugins/importFE/src/FatturaElettronica.php b/plugins/importFE/src/FatturaElettronica.php
index c04fcecc4..c5816b285 100644
--- a/plugins/importFE/src/FatturaElettronica.php
+++ b/plugins/importFE/src/FatturaElettronica.php
@@ -11,6 +11,7 @@ use Modules\Fatture\Tipo as TipoFattura;
 use Modules\Anagrafiche\Anagrafica;
 use Modules\Anagrafiche\Tipo as TipoAnagrafica;
 use Modules\Anagrafiche\Nazione;
+use Util\XML;
 use Uploads;
 use Modules;
 use UnexpectedValueException;
@@ -36,11 +37,7 @@ class FatturaElettronica
     public function __construct($file)
     {
         $this->file = static::getImportDirectory().'/'.$file;
-
-        $xml = simplexml_load_file($this->file, 'SimpleXMLElement', LIBXML_NOCDATA);
-        $json = json_decode(json_encode($xml), true);
-
-        $this->xml = $json;
+        $this->xml = XML::readFile($this->file);
 
         // Individuazione fattura pre-esistente
         $dati_generali = $this->getBody()['DatiGenerali']['DatiGeneraliDocumento'];
@@ -50,8 +47,8 @@ class FatturaElettronica
 
         $fattura = Fattura::where([
             'progressivo_invio' => $progressivo_invio,
+            'numero_esterno' => $numero,
             'data' => $data,
-            'numero' => $numero,
         ])->first();
 
         if (!empty($fattura)) {
@@ -240,7 +237,7 @@ class FatturaElettronica
 
         $result = isset($result[0]) ? $result : [$result];
 
-        return $result;
+        return array_clean($result);
     }
 
     public function saveAllegati()
@@ -273,6 +270,7 @@ class FatturaElettronica
         // Registrazione XML come allegato
         $filename = Uploads::upload($this->file, array_merge($info, [
             'name' => tr('Fattura Elettronica'),
+            'original' => basename($this->file),
         ]));
     }
 
diff --git a/src/Util/XML.php b/src/Util/XML.php
new file mode 100644
index 000000000..1af9903b3
--- /dev/null
+++ b/src/Util/XML.php
@@ -0,0 +1,112 @@
+<?php
+
+namespace Util;
+
+/**
+ * Classe dedicata all'interpretazione dei file XML.
+ *
+ * @since 2.4.3
+ */
+class XML
+{
+    /**
+     * Interpreta i contentuti di una stringa in formato XML.
+     *
+     * @param string $string
+     *
+     * @return array
+     */
+    public static function read($string)
+    {
+        $content = static::stripP7MData($string);
+        $content = static::sanitizeXML($content);
+
+        $xml = simplexml_load_string($content, 'SimpleXMLElement', LIBXML_NOCDATA);
+        $result = json_decode(json_encode($xml), true);
+
+        return $result;
+    }
+
+    /**
+     * Interpreta i contenuti di un file XML.
+     *
+     * @param string $path
+     *
+     * @return array
+     */
+    public static function readFile($path)
+    {
+        return static::read(file_get_contents($path));
+    }
+
+    /**
+     * Removes the PKCS#7 header and the signature info footer from a digitally-signed .xml.p7m file using CAdES format.
+     *
+     * @param string $string File content
+     * @return string An arguably-valid XML string with the .p7m header and footer stripped away.
+     *
+     * @source https://www.ryadel.com/php-estrarre-contenuto-file-xml-p7m-cades-fattura-elettronica-pa/
+     */
+    protected static function stripP7MData($string)
+    {
+        // skip everything before the XML content
+        $string = substr($string, strpos($string, '<?xml '));
+
+        // skip everything after the XML content
+        preg_match_all('/<\/.+?>/', $string, $matches, PREG_OFFSET_CAPTURE);
+        $lastMatch = end($matches[0]);
+
+        $result = substr($string, 0, $lastMatch[1] + strlen($lastMatch[0]) + 1);
+
+        return static::sanitizeXML($result);
+    }
+
+    /**
+     * Removes invalid characters from a UTF-8 XML string
+     *
+     * @param string a XML string potentially containing invalid characters
+     * @return string
+     *
+     * @source https://www.ryadel.com/php-eliminare-caratteri-non-validi-file-stringa-xml-utf8-utf-8/
+     */
+    protected static function sanitizeXML($string)
+    {
+        if (!empty($string)) {
+            $regex = '/(
+            [\xC0-\xC1] # Invalid UTF-8 Bytes
+            | [\xF5-\xFF] # Invalid UTF-8 Bytes
+            | \xE0[\x80-\x9F] # Overlong encoding of prior code point
+            | \xF0[\x80-\x8F] # Overlong encoding of prior code point
+            | [\xC2-\xDF](?![\x80-\xBF]) # Invalid UTF-8 Sequence Start
+            | [\xE0-\xEF](?![\x80-\xBF]{2}) # Invalid UTF-8 Sequence Start
+            | [\xF0-\xF4](?![\x80-\xBF]{3}) # Invalid UTF-8 Sequence Start
+            | (?<=[\x0-\x7F\xF5-\xFF])[\x80-\xBF] # Invalid UTF-8 Sequence Middle
+            | (?<![\xC2-\xDF]|[\xE0-\xEF]|[\xE0-\xEF][\x80-\xBF]|[\xF0-\xF4]|[\xF0-\xF4][\x80-\xBF]|[\xF0-\xF4][\x80-\xBF]{2})[\x80-\xBF] # Overlong Sequence
+            | (?<=[\xE0-\xEF])[\x80-\xBF](?![\x80-\xBF]) # Short 3 byte sequence
+            | (?<=[\xF0-\xF4])[\x80-\xBF](?![\x80-\xBF]{2}) # Short 4 byte sequence
+            | (?<=[\xF0-\xF4][\x80-\xBF])[\x80-\xBF](?![\x80-\xBF]) # Short 4 byte sequence (2)
+        )/x';
+            $string = preg_replace($regex, '', $string);
+
+            $result = "";
+            $current;
+            $length = strlen($string);
+            for ($i=0; $i < $length; $i++) {
+                $current = ord($string{$i});
+                if (($current == 0x9) ||
+                ($current == 0xA) ||
+                ($current == 0xD) ||
+                (($current >= 0x20) && ($current <= 0xD7FF)) ||
+                (($current >= 0xE000) && ($current <= 0xFFFD)) ||
+                (($current >= 0x10000) && ($current <= 0x10FFFF))) {
+                    $result .= chr($current);
+                } else {
+                    $ret;    // use this to strip invalid character(s)
+                // $ret .= " ";    // use this to replace them with spaces
+                }
+            }
+            $string = $result;
+        }
+        return $string;
+    }
+}