From 415b7425fdbaadf26e24428f508526f395182931 Mon Sep 17 00:00:00 2001
From: Regis Houssin <regis.houssin@capnetworks.com>
Date: Tue, 8 May 2018 09:45:10 +0200
Subject: [PATCH] NEW add pdf function to check if pdf file is
 protected/encrypted

---
 htdocs/core/lib/pdf.lib.php | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index e2c01f90f47..b0cda2ecd6a 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -169,6 +169,25 @@ function pdf_getInstance($format='',$metric='mm',$pagetype='P')
 	return $pdf;
 }
 
+/**
+ * Return if pdf file is protected/encrypted
+ *
+ * @param	TCPDF		$pdf			PDF initialized object
+ * @param   string		$pathoffile		Path of file
+ * @return  boolean     			    True or false
+ */
+function pdf_getEncryption(&$pdf, $pathoffile)
+{
+	$isencrypted = false;
+
+	$pdfparser = $pdf->_getPdfParser($pathoffile);
+	$data = $pdfparser->getParsedData();
+	if (isset($data[0]['trailer'][1]['/Encrypt'])) {
+		$isencrypted = true;
+	}
+
+	return $isencrypted;
+}
 
 /**
  *      Return font name to use for PDF generation