From b7f1c94b97b80c592a8f75dfa8fdb181e90157ec Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Wed, 29 Jan 2020 20:09:49 +0100
Subject: [PATCH] Enigma: Fix incorrect encrypted mail structure (boundary)
 with Mail_Mime >= 1.10.5

---
 plugins/enigma/lib/enigma_mime_message.php | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/plugins/enigma/lib/enigma_mime_message.php b/plugins/enigma/lib/enigma_mime_message.php
index a81f3cfc6..eb6a25c2d 100644
--- a/plugins/enigma/lib/enigma_mime_message.php
+++ b/plugins/enigma/lib/enigma_mime_message.php
@@ -243,8 +243,6 @@ class enigma_mime_message extends Mail_mime
             }
 
             $this->headers = array_merge($this->headers, $headers);
-
-            return;
         }
         else {
             $output = $message->encode($boundary, $skip_head);
@@ -254,9 +252,16 @@ class enigma_mime_message extends Mail_mime
             }
 
             $this->headers = array_merge($this->headers, $output['headers']);
+        }
 
-            return $output['body'];
+        // remember the boundary used, in case we'd handle headers() call later
+        if (empty($boundary) && !empty($this->headers['Content-Type'])) {
+            if (preg_match('/boundary="([^"]+)/', $this->headers['Content-Type'], $m)) {
+                $this->build_params['boundary'] = $m[1];
+            }
         }
+
+        return $filename ? null : $output['body'];
     }
 
     /**