From 08df33b5c25577cf42d7f524eeaa367cbde886fb Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 15 Oct 2012 09:38:13 -0400
Subject: [PATCH] Partially revert 9546d22c6: don't validate with parse_charset()

---
 program/include/rcube_message.php |  117 +++++++++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 87 insertions(+), 30 deletions(-)

diff --git a/program/include/rcube_message.php b/program/include/rcube_message.php
index 76246a2..7bf95d1 100644
--- a/program/include/rcube_message.php
+++ b/program/include/rcube_message.php
@@ -17,9 +17,6 @@
  +-----------------------------------------------------------------------+
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  +-----------------------------------------------------------------------+
-
- $Id$
-
 */
 
 
@@ -33,9 +30,9 @@
 class rcube_message
 {
     /**
-     * Instace of rcmail.
+     * Instace of framework class.
      *
-     * @var rcmail
+     * @var rcube
      */
     private $app;
 
@@ -53,13 +50,14 @@
      */
     private $mime;
     private $opt = array();
-    private $inline_parts = array();
     private $parse_alternative = false;
 
-    public $uid = null;
+    public $uid;
+    public $folder;
     public $headers;
     public $parts = array();
     public $mime_parts = array();
+    public $inline_parts = array();
     public $attachments = array();
     public $subject = '';
     public $sender = null;
@@ -71,16 +69,21 @@
      *
      * Provide a uid, and parse message structure.
      *
-     * @param string $uid The message UID.
+     * @param string $uid    The message UID.
+     * @param string $folder Folder name
      *
      * @see self::$app, self::$storage, self::$opt, self::$parts
      */
-    function __construct($uid)
+    function __construct($uid, $folder = null)
     {
         $this->uid  = $uid;
-        $this->app  = rcmail::get_instance();
+        $this->app  = rcube::get_instance();
         $this->storage = $this->app->get_storage();
+        $this->folder  = strlen($folder) ? $folder : $this->storage->get_folder();
         $this->storage->set_options(array('all_headers' => true));
+
+        // Set current folder
+        $this->storage->set_folder($this->folder);
 
         $this->headers = $this->storage->get_message($uid);
 
@@ -96,8 +99,10 @@
         $this->opt = array(
             'safe' => $this->is_safe,
             'prefer_html' => $this->app->config->get('prefer_html'),
-            'get_url' => rcmail_url('get', array(
-                '_mbox' => $this->storage->get_folder(), '_uid' => $uid))
+            'get_url' => $this->app->url(array(
+                'action' => 'get',
+                'mbox'   => $this->storage->get_folder(),
+                'uid'    => $uid))
         );
 
         if (!empty($this->headers->structure)) {
@@ -164,11 +169,13 @@
     /**
      * Get content of a specific part of this message
      *
-     * @param string $mime_id Part MIME-ID
-     * @param resource $fp File pointer to save the message part
+     * @param string   $mime_id           Part MIME-ID
+     * @param resource $fp File           pointer to save the message part
+     * @param boolean  $skip_charset_conv Disables charset conversion
+     *
      * @return string Part content
      */
-    public function get_part_content($mime_id, $fp=NULL)
+    public function get_part_content($mime_id, $fp = null, $skip_charset_conv = false)
     {
         if ($part = $this->mime_parts[$mime_id]) {
             // stored in message structure (winmail/inline-uuencode)
@@ -178,10 +185,12 @@
                 }
                 return $fp ? true : $part->body;
             }
+
             // get from IMAP
-            return $this->storage->get_message_part($this->uid, $mime_id, $part, NULL, $fp);
-        } else
-            return null;
+            $this->storage->set_folder($this->folder);
+
+            return $this->storage->get_message_part($this->uid, $mime_id, $part, NULL, $fp, $skip_charset_conv);
+        }
     }
 
 
@@ -276,6 +285,32 @@
 
 
     /**
+     * Checks if part of the message is an attachment (or part of it)
+     *
+     * @param rcube_message_part $part Message part
+     *
+     * @return bool True if the part is an attachment part
+     */
+    public function is_attachment($part)
+    {
+        foreach ($this->attachments as $att_part) {
+            if ($att_part->mime_id == $part->mime_id) {
+                return true;
+            }
+
+            // check if the part is a subpart of another attachment part (message/rfc822)
+            if ($att_part->mimetype == 'message/rfc822') {
+                if (in_array($part, (array)$att_part->parts)) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+
+    /**
      * Read the message structure returend by the IMAP server
      * and build flat lists of content parts and attachments
      *
@@ -336,6 +371,10 @@
             foreach ($structure->parts as $p => $sub_part) {
                 $sub_mimetype = $sub_part->mimetype;
 
+                // skip empty parts
+                if (!$sub_part->size)
+                    continue;
+
                 // check if sub part is
                 if ($sub_mimetype == 'text/plain')
                     $plain_part = $p;
@@ -380,7 +419,8 @@
                 $c->type            = 'content';
                 $c->ctype_primary   = 'text';
                 $c->ctype_secondary = 'plain';
-                $c->body            = rcube_label('htmlmessage');
+                $c->mimetype        = 'text/plain';
+                $c->realtype        = 'text/html';
 
                 $this->parts[] = $c;
             }
@@ -388,7 +428,6 @@
             // add html part as attachment
             if ($html_part !== null && $structure->parts[$html_part] !== $print_part) {
                 $html_part = &$structure->parts[$html_part];
-                $html_part->filename = rcube_label('htmlmessage');
                 $html_part->mimetype = 'text/html';
 
                 $this->attachments[] = $html_part;
@@ -400,8 +439,8 @@
             $p->type            = 'content';
             $p->ctype_primary   = 'text';
             $p->ctype_secondary = 'plain';
-            $p->body            = rcube_label('encryptedmessage');
-            $p->size            = strlen($p->body);
+            $p->mimetype        = 'text/plain';
+            $p->realtype        = 'multipart/encrypted';
 
             $this->parts[] = $p;
         }
@@ -459,8 +498,13 @@
                     }
 
                     // list as attachment as well
-                    if (!empty($mail_part->filename))
+                    if (!empty($mail_part->filename)) {
                         $this->attachments[] = $mail_part;
+                    }
+                    // list html part as attachment (here the part is most likely inside a multipart/related part)
+                    else if ($this->parse_alternative && ($secondary_type == 'html' && !$this->opt['prefer_html'])) {
+                        $this->attachments[] = $mail_part;
+                    }
                 }
                 // part message/*
                 else if ($primary_type == 'message') {
@@ -610,8 +654,10 @@
     function tnef_decode(&$part)
     {
         // @TODO: attachment may be huge, hadle it via file
-        if (!isset($part->body))
+        if (!isset($part->body)) {
+            $this->storage->set_folder($this->folder);
             $part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part);
+        }
 
         $parts = array();
         $tnef = new tnef_decoder;
@@ -646,38 +692,49 @@
     function uu_decode(&$part)
     {
         // @TODO: messages may be huge, hadle body via file
-        if (!isset($part->body))
+        if (!isset($part->body)) {
+            $this->storage->set_folder($this->folder);
             $part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part);
+        }
 
         $parts = array();
         // FIXME: line length is max.65?
-        $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n(([\x21-\x7E]{0,65}\n)+)`\nend/s';
+        $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n/s';
 
         if (preg_match_all($uu_regexp, $part->body, $matches, PREG_SET_ORDER)) {
-            // remove attachments bodies from the message body
-            $part->body = preg_replace($uu_regexp, '', $part->body);
             // update message content-type
             $part->ctype_primary   = 'multipart';
             $part->ctype_secondary = 'mixed';
             $part->mimetype        = $part->ctype_primary . '/' . $part->ctype_secondary;
+            $uu_endstring = "`\nend\n";
 
             // add attachments to the structure
             foreach ($matches as $pid => $att) {
+                $startpos = strpos($part->body, $att[1]) + strlen($att[1]) + 1; // "\n"
+                $endpos = strpos($part->body, $uu_endstring);
+                $filebody = substr($part->body, $startpos, $endpos-$startpos);
+
+                // remove attachments bodies from the message body
+                $part->body = substr_replace($part->body, "", $startpos, $endpos+strlen($uu_endstring)-$startpos);
+
                 $uupart = new rcube_message_part;
 
                 $uupart->filename = trim($att[1]);
                 $uupart->encoding = 'stream';
-                $uupart->body     = convert_uudecode($att[2]);
+                $uupart->body     = convert_uudecode($filebody);
                 $uupart->size     = strlen($uupart->body);
                 $uupart->mime_id  = 'uu.' . $part->mime_id . '.' . $pid;
 
-                $ctype = rc_mime_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
+                $ctype = rcube_mime::content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
                 $uupart->mimetype = $ctype;
                 list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype);
 
                 $parts[] = $uupart;
                 unset($matches[$pid]);
             }
+
+            // remove attachments bodies from the message body
+            $part->body = preg_replace($uu_regexp, '', $part->body);
         }
 
         return $parts;

--
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