From 7c9d922b96f9a88b350d6e07f5bde84ccc40f9b0 Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Tue, 02 Mar 2010 16:27:53 -0500
Subject: [PATCH] New recent check based on UIDs

---
 program/include/rcube_message.php |  172 ++++++++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 126 insertions(+), 46 deletions(-)

diff --git a/program/include/rcube_message.php b/program/include/rcube_message.php
index 4d3cb6c..fd7a970 100644
--- a/program/include/rcube_message.php
+++ b/program/include/rcube_message.php
@@ -5,7 +5,7 @@
  | program/include/rcube_message.php                                     |
  |                                                                       |
  | This file is part of the RoundCube Webmail client                     |
- | Copyright (C) 2008, RoundCube Dev. - Switzerland                      |
+ | Copyright (C) 2008-2009, RoundCube Dev. - Switzerland                 |
  | Licensed under the GNU GPL                                            |
  |                                                                       |
  | PURPOSE:                                                              |
@@ -15,7 +15,7 @@
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  +-----------------------------------------------------------------------+
 
- $Id: rcube_imap.php 1344 2008-04-30 08:21:42Z thomasb $
+ $Id$
 
 */
 
@@ -42,34 +42,51 @@
   public $mime_parts = array();
   public $attachments = array();
   public $subject = '';
+  public $sender = null;
   public $is_safe = false;
   
-  
+
+  /**
+   * __construct
+   *
+   * Provide a uid, and parse message structure.
+   *
+   * @param string $uid The message UID.
+   *
+   * @uses rcmail::get_instance()
+   * @uses rcube_imap::decode_mime_string()
+   * @uses self::set_safe()
+   *
+   * @see self::$app, self::$imap, self::$opt, self::$structure
+   */
   function __construct($uid)
   {
     $this->app = rcmail::get_instance();
     $this->imap = $this->app->imap;
     
     $this->uid = $uid;
-    $this->headers = $this->imap->get_headers($uid);
+    $this->headers = $this->imap->get_headers($uid, NULL, true, true);
+
     $this->subject = rcube_imap::decode_mime_string($this->headers->subject, $this->headers->charset);
+    list(, $this->sender) = each($this->imap->decode_address_list($this->headers->from));
     
-    $this->is_safe = (intval($_GET['_safe']) || $_SESSION['safe_messages'][$uid]) ? true : false;
-    $_SESSION['safe_messages'][$uid] = $this->is_safe;
-    
+    $this->set_safe((intval($_GET['_safe']) || $_SESSION['safe_messages'][$uid]));
     $this->opt = array(
       'safe' => $this->is_safe,
       'prefer_html' => $this->app->config->get('prefer_html'),
       'get_url' => rcmail_url('get', array('_mbox' => $this->imap->get_mailbox_name(), '_uid' => $uid))
     );
-    
-    if ($this->structure = $this->imap->get_structure($uid)) {
+
+    if ($this->structure = $this->imap->get_structure($uid, $this->headers->body_structure)) {
       $this->get_mime_numbers($this->structure);
       $this->parse_structure($this->structure);
     }
     else {
       $this->body = $this->imap->get_body($uid);
     }
+    
+    // notify plugins and let them analyze this structured message object
+    $this->app->plugins->exec_hook('message_load', array('object' => $this));
   }
   
   
@@ -86,6 +103,16 @@
     return $raw ? $value : $this->imap->decode_header($value);
   }
   
+  /**
+   * Set is_safe var and session data
+   *
+   * @param bool enable/disable
+   */
+  public function set_safe($safe = true)
+  {
+    $this->is_safe = $safe;
+    $_SESSION['safe_messages'][$this->uid] = $this->is_safe;
+  }
   
   /**
    * Compose a valid URL for getting a message part
@@ -106,12 +133,13 @@
    * Get content of a specific part of this message
    *
    * @param string Part MIME-ID
+   * @param resource File pointer to save the message part
    * @return string Part content
    */
-  public function get_part_content($mime_id)
+  public function get_part_content($mime_id, $fp=NULL)
   {
     if ($part = $this->mime_parts[$mime_id])
-      return $this->imap->get_message_part($this->uid, $mime_id, $part);
+      return $this->imap->get_message_part($this->uid, $mime_id, $part, NULL, $fp);
     else
       return null;
   }
@@ -141,17 +169,13 @@
    */
   function first_html_part()
     {
-    $html_part = null;
-
     // check all message parts
     foreach ($this->mime_parts as $mime_id => $part) {
       $mimetype = strtolower($part->ctype_primary . '/' . $part->ctype_secondary);
       if ($mimetype == 'text/html') {
-        $html_part = $this->imap->get_message_part($this->uid, $mime_id, $part);
+        return $this->imap->get_message_part($this->uid, $mime_id, $part);
       }
     }
-
-    return $html_part;
   }
 
 
@@ -203,8 +227,17 @@
    */
   private function parse_structure($structure, $recursive = false)
   {
-    $message_ctype_primary = strtolower($structure->ctype_primary);
-    $message_ctype_secondary = strtolower($structure->ctype_secondary);
+    $message_ctype_primary = $structure->ctype_primary;
+    $message_ctype_secondary = $structure->ctype_secondary;
+    $mimetype = $structure->mimetype;
+
+    // real content-type of message/rfc822 part
+    if ($mimetype == 'message/rfc822') {
+      if ($structure->real_mimetype) {
+        $mimetype = $structure->real_mimetype;
+        list($message_ctype_primary, $message_ctype_secondary) = explode('/', $mimetype);
+      }
+    }
 
     // show message headers
     if ($recursive && is_array($structure->headers) && isset($structure->headers['subject'])) {
@@ -219,24 +252,27 @@
       $structure->type = 'content';
       $this->parts[] = &$structure;
     }
+    // the same for pgp signed messages
+    else if ($mimetype == 'application/pgp' && !$recursive) {
+      $structure->type = 'content';
+      $this->parts[] = &$structure;
+    }
     // message contains alternative parts
-    else if ($message_ctype_primary == 'multipart' && ($message_ctype_secondary == 'alternative') && is_array($structure->parts)) {
+    else if ($mimetype == 'multipart/alternative' && is_array($structure->parts)) {
       // get html/plaintext parts
       $plain_part = $html_part = $print_part = $related_part = null;
 
       foreach ($structure->parts as $p => $sub_part) {
-        $rel_parts = $attachmnts = null;
-        $sub_ctype_primary = strtolower($sub_part->ctype_primary);
-        $sub_ctype_secondary = strtolower($sub_part->ctype_secondary);
+        $sub_mimetype = $sub_part->mimetype;
         
-        // check if sub part is 
-        if ($sub_ctype_primary=='text' && $sub_ctype_secondary=='plain')
+        // check if sub part is
+        if ($sub_mimetype == 'text/plain')
           $plain_part = $p;
-        else if ($sub_ctype_primary=='text' && $sub_ctype_secondary=='html')
+        else if ($sub_mimetype == 'text/html')
           $html_part = $p;
-        else if ($sub_ctype_primary=='text' && $sub_ctype_secondary=='enriched')
+        else if ($sub_mimetype == 'text/enriched')
           $enriched_part = $p;
-        else if ($sub_ctype_primary=='multipart' && ($sub_ctype_secondary=='related' || $sub_ctype_secondary=='mixed'))
+        else if (in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative')))
           $related_part = $p;
       }
 
@@ -268,7 +304,7 @@
         $this->parts[] = $print_part;
       }
       // show plaintext warning
-      else if ($html_part !== nullL && empty($this->parts)) {
+      else if ($html_part !== null && empty($this->parts)) {
         $c = new stdClass;
         $c->type = 'content';
         $c->body = rcube_label('htmlmessage');
@@ -288,32 +324,53 @@
       }
     }
     // this is an ecrypted message -> create a plaintext body with the according message
-    else if ($message_ctype_primary == 'multipart' && $message_ctype_secondary == 'encrypted') {
+    else if ($mimetype == 'multipart/encrypted') {
       $p = new stdClass;
       $p->type = 'content';
       $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($structure->parts)) {
       // iterate over parts
       for ($i=0; $i < count($structure->parts); $i++) {
         $mail_part = &$structure->parts[$i];
-        $primary_type = strtolower($mail_part->ctype_primary);
-        $secondary_type = strtolower($mail_part->ctype_secondary);
+        $primary_type = $mail_part->ctype_primary;
+        $secondary_type = $mail_part->ctype_secondary;
+
+        // real content-type of message/rfc822
+        if ($mail_part->real_mimetype) {
+          $part_orig_mimetype = $mail_part->mimetype;
+          $part_mimetype = $mail_part->real_mimetype;
+          list($primary_type, $secondary_type) = explode('/', $part_mimetype);
+        }
+        else
+          $part_mimetype = $mail_part->mimetype;
 
         // multipart/alternative
         if ($primary_type=='multipart') {
           $this->parse_structure($mail_part, true);
+
+          // list message/rfc822 as attachment as well (mostly .eml)
+          if ($part_orig_mimetype == 'message/rfc822' && !empty($mail_part->filename))
+            $this->attachments[] = $mail_part;
         }
         // part text/[plain|html] OR message/delivery-status
-        else if (($primary_type == 'text' && ($secondary_type == 'plain' || $secondary_type == 'html') && $mail_part->disposition != 'attachment') ||
-                 ($primary_type == 'message' && ($secondary_type == 'delivery-status' || $secondary_type == 'disposition-notification'))) {
-          
-          // add text part if we're not in alternative mode or if it matches the prefs
+        else if ((($part_mimetype == 'text/plain' || $part_mimetype == 'text/html') && $mail_part->disposition != 'attachment') ||
+            $part_mimetype == 'message/delivery-status' || $part_mimetype == 'message/disposition-notification') {
+
+          // add text part if it matches the prefs
           if (!$this->parse_alternative ||
               ($secondary_type == 'html' && $this->opt['prefer_html']) ||
               ($secondary_type == 'plain' && !$this->opt['prefer_html'])) {
@@ -328,25 +385,44 @@
         // part message/*
         else if ($primary_type=='message') {
           $this->parse_structure($mail_part, true);
+
+          // list as attachment as well (mostly .eml)
+          if (!empty($mail_part->filename))
+            $this->attachments[] = $mail_part;
         }
         // ignore "virtual" protocol parts
         else if ($primary_type == 'protocol')
           continue;
+          
+        // part is Microsoft Outlook TNEF (winmail.dat)
+        else if ($part_mimetype == 'application/ms-tnef') {
+          foreach ((array)$this->imap->tnef_decode($mail_part, $structure->headers['uid']) as $tnef_part) {
+            $this->mime_parts[$tnef_part->mime_id] = $tnef_part;
+            $this->attachments[] = $tnef_part;
+          }
+        }
 
-        // part is file/attachment
-        else if ($mail_part->disposition == 'attachment' || $mail_part->disposition == 'inline' ||
+        // part is a file/attachment
+        else if (preg_match('/^(inline|attach)/', $mail_part->disposition) ||
                  $mail_part->headers['content-id'] || (empty($mail_part->disposition) && $mail_part->filename)) {
+
           // skip apple resource forks
           if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile')
             continue;
 
-          // part belongs to a related message
-          if ($message_ctype_secondary == 'related' && $mail_part->headers['content-id']) {
-            $mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']);
+          // part belongs to a related message and is linked
+          if ($mimetype == 'multipart/related'
+              && preg_match('!^image/!', $part_mimetype)
+              && ($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[] = $mail_part;
           }
-          // is regular attachment
-          else {
+          // is a regular attachment
+          else if (preg_match('!^[a-z]+/[a-z0-9-.+]+$!i', $part_mimetype)) {
             if (!$mail_part->filename)
               $mail_part->filename = 'Part '.$mail_part->mime_id;
             $this->attachments[] = $mail_part;
@@ -355,11 +431,15 @@
       }
 
       // if this was a related part try to resolve references
-      if ($message_ctype_secondary == 'related' && sizeof($this->inline_parts)) {
+      if ($mimetype == 'multipart/related' && sizeof($this->inline_parts)) {
         $a_replaces = array();
 
         foreach ($this->inline_parts as $inline_object) {
-          $a_replaces['cid:'.$inline_object->content_id] = $this->get_part_url($inline_object->mime_id);
+          $part_url = $this->get_part_url($inline_object->mime_id);
+          if ($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;
         }
 
         // add replace array to each content part
@@ -371,7 +451,7 @@
       }
     }
 
-    // message is single part non-text
+    // message is a single part non-text
     else if ($structure->filename) {
       $this->attachments[] = $structure;
     }

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