From f1114237556d32bb217c5dcbb0aa7db2d081608b Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 15 Mar 2013 05:41:09 -0400
Subject: [PATCH] Fix storing 'safe' flag on a message. The key for session value should include folder name. A message with the same UID may exist in another folder.

---
 program/lib/Roundcube/rcube_message.php |  164 ++++++++++++++++++++++++++++++++++++++----------------
 1 files changed, 116 insertions(+), 48 deletions(-)

diff --git a/program/lib/Roundcube/rcube_message.php b/program/lib/Roundcube/rcube_message.php
index f41493d..42d7b9b 100644
--- a/program/lib/Roundcube/rcube_message.php
+++ b/program/lib/Roundcube/rcube_message.php
@@ -93,7 +93,7 @@
         $this->subject = $this->mime->decode_mime_string($this->headers->subject);
         list(, $this->sender) = each($this->mime->decode_address_list($this->headers->from, 1));
 
-        $this->set_safe((intval($_GET['_safe']) || $_SESSION['safe_messages'][$uid]));
+        $this->set_safe((intval($_GET['_safe']) || $_SESSION['safe_messages'][$this->folder.':'.$uid]));
         $this->opt = array(
             'safe' => $this->is_safe,
             'prefer_html' => $this->app->config->get('prefer_html'),
@@ -144,8 +144,7 @@
      */
     public function set_safe($safe = true)
     {
-        $this->is_safe = $safe;
-        $_SESSION['safe_messages'][$this->uid] = $this->is_safe;
+        $_SESSION['safe_messages'][$this->folder.':'.$this->uid] = $this->is_safe = $safe;
     }
 
 
@@ -194,39 +193,82 @@
 
 
     /**
-     * Determine if the message contains a HTML part
+     * Determine if the message contains a HTML part. This must to be
+     * a real part not an attachment (or its part)
+     * This must to be
+     * a real part not an attachment (or its part)
      *
-     * @param bool $recursive Enables checking in all levels of the structure
-     * @param bool $enriched  Enables checking for text/enriched parts too
+     * @param bool $enriched Enables checking for text/enriched parts too
      *
      * @return bool True if a HTML is available, False if not
      */
-    function has_html_part($recursive = true, $enriched = false)
+    function has_html_part($enriched = false)
     {
         // check all message parts
-        foreach ($this->parts as $part) {
+        foreach ($this->mime_parts as $part) {
             if ($part->mimetype == 'text/html' || ($enriched && $part->mimetype == 'text/enriched')) {
-                // Level check, we'll skip e.g. HTML attachments
-                if (!$recursive) {
-                    $level = explode('.', $part->mime_id);
+                // Skip if part is an attachment, don't use is_attachment() here
+                if ($part->filename) {
+                    continue;
+                }
 
-                    // Skip if level too deep or part has a file name
-                    if (count($level) > 2 || $part->filename) {
-                        continue;
+                $level = explode('.', $part->mime_id);
+
+                // Check if the part belongs to higher-level's alternative/related
+                while (array_pop($level) !== null) {
+                    if (!count($level)) {
+                        return true;
                     }
 
-                    // HTML part can be on the lower level, if not...
-                    if (count($level) > 1) {
-                        array_pop($level);
-                        $parent = $this->mime_parts[join('.', $level)];
-                        // ... parent isn't multipart/alternative or related
-                        if ($parent->mimetype != 'multipart/alternative' && $parent->mimetype != 'multipart/related') {
-                            continue;
-                        }
+                    $parent = $this->mime_parts[join('.', $level)];
+                    if ($parent->mimetype != 'multipart/alternative' && $parent->mimetype != 'multipart/related') {
+                        continue 2;
                     }
                 }
 
-                return true;
+                if ($part->size) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+
+    /**
+     * Determine if the message contains a text/plain part. This must to be
+     * a real part not an attachment (or its part)
+     *
+     * @return bool True if a plain text part is available, False if not
+     */
+    function has_text_part()
+    {
+        // check all message parts
+        foreach ($this->mime_parts as $part) {
+            if ($part->mimetype == 'text/plain') {
+                // Skip if part is an attachment, don't use is_attachment() here
+                if ($part->filename) {
+                    continue;
+                }
+
+                $level = explode('.', $part->mime_id);
+
+                // Check if the part belongs to higher-level's alternative/related
+                while (array_pop($level) !== null) {
+                    if (!count($level)) {
+                        return true;
+                    }
+
+                    $parent = $this->mime_parts[join('.', $level)];
+                    if ($parent->mimetype != 'multipart/alternative' && $parent->mimetype != 'multipart/related') {
+                        continue 2;
+                    }
+                }
+
+                if ($part->size) {
+                    return true;
+                }
             }
         }
 
@@ -271,7 +313,7 @@
                 $out = $this->get_part_content($mime_id);
 
                 // create instance of html2text class
-                $txt = new html2text($out);
+                $txt = new rcube_html2text($out);
                 return $txt->get_text();
             }
         }
@@ -321,8 +363,8 @@
             $mimetype = $structure->real_mimetype;
 
             // parse headers from message/rfc822 part
-            if (!isset($structure->headers['subject'])) {
-                list($headers, $dump) = explode("\r\n\r\n", $this->get_part_content($structure->mime_id, null, true, 4096));
+            if (!isset($structure->headers['subject']) && !isset($structure->headers['from'])) {
+                list($headers, $dump) = explode("\r\n\r\n", $this->get_part_content($structure->mime_id, null, true, 8192));
                 $structure->headers = rcube_mime::parse_headers($headers);
             }
         }
@@ -330,10 +372,10 @@
             $mimetype = $structure->mimetype;
 
         // show message headers
-        if ($recursive && is_array($structure->headers) && isset($structure->headers['subject'])) {
+        if ($recursive && is_array($structure->headers) && (isset($structure->headers['subject']) || isset($structure->headers['from']))) {
             $c = new stdClass;
             $c->type = 'headers';
-            $c->headers = &$structure->headers;
+            $c->headers = $structure->headers;
             $this->parts[] = $c;
         }
 
@@ -350,45 +392,59 @@
 
         // print body if message doesn't have multiple parts
         if ($message_ctype_primary == 'text' && !$recursive) {
+            // parts with unsupported type add to attachments list
+            if (!in_array($message_ctype_secondary, array('plain', 'html', 'enriched'))) {
+                $this->attachments[] = $structure;
+                return;
+            }
+
             $structure->type = 'content';
-            $this->parts[] = &$structure;
+            $this->parts[] = $structure;
 
             // Parse simple (plain text) message body
-            if ($message_ctype_secondary == 'plain')
+            if ($message_ctype_secondary == 'plain') {
                 foreach ((array)$this->uu_decode($structure) as $uupart) {
                     $this->mime_parts[$uupart->mime_id] = $uupart;
                     $this->attachments[] = $uupart;
                 }
+            }
         }
         // the same for pgp signed messages
         else if ($mimetype == 'application/pgp' && !$recursive) {
             $structure->type = 'content';
-            $this->parts[] = &$structure;
+            $this->parts[] = $structure;
         }
         // message contains (more than one!) alternative parts
         else if ($mimetype == 'multipart/alternative'
             && is_array($structure->parts) && count($structure->parts) > 1
         ) {
-            // get html/plaintext parts
-            $plain_part = $html_part = $print_part = $related_part = null;
+            $plain_part   = null;
+            $html_part    = null;
+            $print_part   = null;
+            $related_part = null;
+            $attach_part  = null;
 
+            // get html/plaintext parts, other add to attachments list
             foreach ($structure->parts as $p => $sub_part) {
                 $sub_mimetype = $sub_part->mimetype;
+                $is_multipart = preg_match('/^multipart\/(related|relative|mixed|alternative)/', $sub_mimetype);
 
                 // skip empty text parts
-                if (!$sub_part->size && preg_match('#^text/(plain|html|enriched)$#', $sub_mimetype)) {
+                if (!$sub_part->size && !$is_multipart) {
                     continue;
                 }
 
                 // check if sub part is
-                if ($sub_mimetype == 'text/plain')
+                if ($is_multipart)
+                    $related_part = $p;
+                else if ($sub_mimetype == 'text/plain')
                     $plain_part = $p;
                 else if ($sub_mimetype == 'text/html')
                     $html_part = $p;
                 else if ($sub_mimetype == 'text/enriched')
                     $enriched_part = $p;
-                else if (in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative')))
-                    $related_part = $p;
+                else
+                    $attach_part = $p;
             }
 
             // parse related part (alternative part could be in here)
@@ -404,13 +460,13 @@
 
             // choose html/plain part to print
             if ($html_part !== null && $this->opt['prefer_html']) {
-                $print_part = &$structure->parts[$html_part];
+                $print_part = $structure->parts[$html_part];
             }
             else if ($enriched_part !== null) {
-                $print_part = &$structure->parts[$enriched_part];
+                $print_part = $structure->parts[$enriched_part];
             }
             else if ($plain_part !== null) {
-                $print_part = &$structure->parts[$plain_part];
+                $print_part = $structure->parts[$plain_part];
             }
 
             // add the right message body
@@ -432,10 +488,15 @@
 
             // add html part as attachment
             if ($html_part !== null && $structure->parts[$html_part] !== $print_part) {
-                $html_part = &$structure->parts[$html_part];
+                $html_part = $structure->parts[$html_part];
                 $html_part->mimetype = 'text/html';
 
                 $this->attachments[] = $html_part;
+            }
+
+            // add unsupported/unrecognized parts to attachments list
+            if ($attach_part) {
+                $this->attachments[] = $structure->parts[$attach_part];
             }
         }
         // this is an ecrypted message -> create a plaintext body with the according message
@@ -446,6 +507,17 @@
             $p->ctype_secondary = 'plain';
             $p->mimetype        = 'text/plain';
             $p->realtype        = 'multipart/encrypted';
+
+            $this->parts[] = $p;
+        }
+        // this is an S/MIME ecrypted message -> create a plaintext body with the according message
+        else if ($mimetype == 'application/pkcs7-mime') {
+            $p = new stdClass;
+            $p->type            = 'content';
+            $p->ctype_primary   = 'text';
+            $p->ctype_secondary = 'plain';
+            $p->mimetype        = 'text/plain';
+            $p->realtype        = 'application/pkcs7-mime';
 
             $this->parts[] = $p;
         }
@@ -541,7 +613,7 @@
                         continue;
 
                     // part belongs to a related message and is linked
-                    if ($mimetype == 'multipart/related'
+                    if (preg_match('/^multipart\/(related|relative)/', $mimetype)
                         && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])) {
                         if ($mail_part->headers['content-id'])
                             $mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']);
@@ -561,9 +633,6 @@
                     // regular attachment with valid content type
                     // (content-type name regexp according to RFC4288.4.2)
                     else if (preg_match('/^[a-z0-9!#$&.+^_-]+\/[a-z0-9!#$&.+^_-]+$/i', $part_mimetype)) {
-                        if (!$mail_part->filename)
-                            $mail_part->filename = 'Part '.$mail_part->mime_id;
-
                         $this->attachments[] = $mail_part;
                     }
                     // attachment with invalid content type
@@ -583,13 +652,13 @@
             }
 
             // if this was a related part try to resolve references
-            if ($mimetype == 'multipart/related' && sizeof($this->inline_parts)) {
+            if (preg_match('/^multipart\/(related|relative)/', $mimetype) && sizeof($this->inline_parts)) {
                 $a_replaces = array();
                 $img_regexp = '/^image\/(gif|jpe?g|png|tiff|bmp|svg)/';
 
                 foreach ($this->inline_parts as $inline_object) {
                     $part_url = $this->get_part_url($inline_object->mime_id, true);
-                    if ($inline_object->content_id)
+                    if (isset($inline_object->content_id))
                         $a_replaces['cid:'.$inline_object->content_id] = $part_url;
                     if ($inline_object->content_location) {
                         $a_replaces[$inline_object->content_location] = $part_url;
@@ -628,7 +697,6 @@
         }
         // message is a single part non-text (without filename)
         else if (preg_match('/application\//i', $mimetype)) {
-            $structure->filename = 'Part '.$structure->mime_id;
             $this->attachments[] = $structure;
         }
     }

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