From efe5a55c4c5d4bd2ba7d5398d33824a45f628f3a Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Fri, 04 Dec 2009 05:53:20 -0500
Subject: [PATCH] - added comment

---
 program/include/rcube_message.php |   41 +++++++++++++++++++++++++++++++----------
 1 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/program/include/rcube_message.php b/program/include/rcube_message.php
index 374dc90..4d01348 100644
--- a/program/include/rcube_message.php
+++ b/program/include/rcube_message.php
@@ -224,8 +224,9 @@
    *
    * @param object rcube_message_part Message structure node
    * @param bool  True when called recursively
+   * @param bool  True when message should be parsed as message/alternative
    */
-  private function parse_structure($structure, $recursive = false)
+  private function parse_structure($structure, $recursive = false, $force_alternative = false)
   {
     $message_ctype_primary = strtolower($structure->ctype_primary);
     $message_ctype_secondary = strtolower($structure->ctype_secondary);
@@ -323,8 +324,16 @@
       $p->ctype_primary = 'text';
       $p->ctype_secondary = 'plain';
       $p->body = rcube_label('encryptedmessage');
+      $p->size = strlen($p->body);
       
-      $this->parts[] = $p;
+      // maybe some plugins are able to decode this encrypted message part
+      $data = $this->app->plugins->exec_hook('message_part_encrypted', array('object' => $this, 'struct' => $structure, 'part' => $p));
+      if (is_array($data['parts'])) {
+        $this->parts = array_merge($this->parts, $data['parts']);
+      }
+      else if ($data['part']) {
+        $this->parts[] = $p;
+      }
     }
     // message contains multiple parts
     else if (is_array($structure->parts) && !empty($structure->parts)) {
@@ -342,22 +351,33 @@
         else if (($primary_type == 'text' && ($secondary_type == 'plain' || $secondary_type == 'html') && $mail_part->disposition != 'attachment') ||
                  ($primary_type == 'message' && ($secondary_type == 'delivery-status' || $secondary_type == 'disposition-notification'))) {
 
-          // add text part if we're not in alternative mode or if it matches the prefs
-          if (!$this->parse_alternative ||
+          // add text part if it matches the prefs
+          if ((!$this->parse_alternative && !$force_alternative) ||
               ($secondary_type == 'html' && $this->opt['prefer_html']) ||
               ($secondary_type == 'plain' && !$this->opt['prefer_html'])) {
             $mail_part->type = 'content';
             $this->parts[] = $mail_part;
           }
-
+          
           // list as attachment as well
           if (!empty($mail_part->filename))
             $this->attachments[] = $mail_part;
         }
         // part message/*
         else if ($primary_type=='message') {
-          $this->parse_structure($mail_part, true);
-          
+          // let's try to find out if message/rfc822 is a multipart/alternative
+          if ($secondary_type == 'rfc822' && is_array($mail_part->parts) && count($mail_part->parts) > 1) {
+            $types = array();
+            // iterate over parts to find its types and count them by type
+            for ($j=0; $j < count($mail_part->parts); $j++) {
+              $_type = strtolower($mail_part->parts[$j]->ctype_primary).'/'.strtolower($mail_part->parts[$j]->ctype_secondary);
+              $types[$_type] = $types[$_type] ? $types[$_type]+1 : 1;
+            }
+            if ($types['text/plain'] == 1 && $types['text/html'] == 1)
+              $_alternative = true;
+          }
+          $this->parse_structure($mail_part, true, $_alternative);
+
           // list as attachment as well (mostly .eml)
           if (!empty($mail_part->filename))
             $this->attachments[] = $mail_part;
@@ -384,16 +404,17 @@
 
           // part belongs to a related message and is linked
           if ($message_ctype_secondary == 'related'
-	      && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])) {
+              && preg_match('!^image/!', $mail_part->mimetype)
+              && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])) {
             if ($mail_part->headers['content-id'])
               $mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']);
             if ($mail_part->headers['content-location'])
               $mail_part->content_location = $mail_part->headers['content-base'] . $mail_part->headers['content-location'];
-    
+              
             $this->inline_parts[] = $mail_part;
           }
           // is a regular attachment
-          else {
+          else if (preg_match('!^[a-z]+/[a-z0-9-.+]+$!i', $mail_part->mimetype)) {
             if (!$mail_part->filename)
               $mail_part->filename = 'Part '.$mail_part->mime_id;
             $this->attachments[] = $mail_part;

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