From bd0551b22076b82a6d49e9f7a2b2e0c90a1b2326 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 05 Feb 2016 07:25:27 -0500
Subject: [PATCH] Secure also downloads of addressbook exports, managesieve script exports and Enigma keys exports

---
 program/steps/mail/sendmail.inc | 1307 +++++++++++++++++++++++++++++++++++-----------------------
 1 files changed, 783 insertions(+), 524 deletions(-)

diff --git a/program/steps/mail/sendmail.inc b/program/steps/mail/sendmail.inc
index 774119d..dbd6f98 100644
--- a/program/steps/mail/sendmail.inc
+++ b/program/steps/mail/sendmail.inc
@@ -1,12 +1,15 @@
 <?php
 
-/*
+/**
  +-----------------------------------------------------------------------+
  | program/steps/mail/sendmail.inc                                       |
  |                                                                       |
- | This file is part of the RoundCube Webmail client                     |
- | Copyright (C) 2005-2010, RoundCube Dev. - Switzerland                 |
- | Licensed under the GNU GPL                                            |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2005-2013, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
  |                                                                       |
  | PURPOSE:                                                              |
  |   Compose a new mail message with all headers and attachments         |
@@ -15,384 +18,337 @@
  +-----------------------------------------------------------------------+
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  +-----------------------------------------------------------------------+
-
- $Id$
-
 */
 
 // remove all scripts and act as called in frame
 $OUTPUT->reset();
 $OUTPUT->framed = TRUE;
 
-$savedraft = !empty($_POST['_draft']) ? TRUE : FALSE;
+$saveonly       = !empty($_GET['_saveonly']);
+$savedraft      = !empty($_POST['_draft']) && !$saveonly;
+$sendmail_delay = (int) $RCMAIL->config->get('sendmail_delay');
+$drafts_mbox    = $RCMAIL->config->get('drafts_mbox');
+
+$COMPOSE_ID = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC);
+$COMPOSE    =& $_SESSION['compose_data_'.$COMPOSE_ID];
 
 /****** checks ********/
 
-if (!isset($_SESSION['compose']['id'])) {
-  raise_error(array('code' => 500, 'type' => 'smtp',
-    'file' => __FILE__, 'line' => __LINE__,
-    'message' => "Invalid compose ID"), true, false);
+if (!isset($COMPOSE['id'])) {
+    rcube::raise_error(array('code' => 500, 'type' => 'php',
+        'file' => __FILE__, 'line' => __LINE__,
+        'message' => "Invalid compose ID"), true, false);
 
-  $OUTPUT->show_message("An internal error occured. Please try again.", 'error');
-  $OUTPUT->send('iframe');
+    $OUTPUT->show_message('internalerror', 'error');
+    $OUTPUT->send('iframe');
 }
 
 if (!$savedraft) {
-  if (empty($_POST['_to']) && empty($_POST['_cc']) && empty($_POST['_bcc'])
-    && empty($_POST['_subject']) && $_POST['_message']) {
-    $OUTPUT->show_message('sendingfailed', 'error');
-    $OUTPUT->send('iframe');
-  }
-
-  if(!empty($CONFIG['sendmail_delay'])) {
-    $wait_sec = time() - intval($CONFIG['sendmail_delay']) - intval($CONFIG['last_message_time']);
-    if($wait_sec < 0) {
-      $OUTPUT->show_message('senttooquickly', 'error', array('sec' => $wait_sec * -1));
-      $OUTPUT->send('iframe');
-    }
-  }
-}
-
-
-/****** message sending functions ********/
-
-// encrypt parts of the header
-function rcmail_encrypt_header($what)
-{
-  global $CONFIG, $RCMAIL;
-  if (!$CONFIG['http_received_header_encrypt'])
-  {
-    return $what;
-  }
-  return $RCMAIL->encrypt($what);
-}
-
-// get identity record
-function rcmail_get_identity($id)
-  {
-  global $USER, $OUTPUT;
-  
-  if ($sql_arr = $USER->get_identity($id))
-    {
-    $out = $sql_arr;
-    $out['mailto'] = $sql_arr['email'];
-    
-    // Special chars as defined by RFC 822 need to in quoted string (or escaped).
-    if (preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $sql_arr['name']))
-      $name = '"' . addcslashes($sql_arr['name'], '"') . '"';
-    else
-      $name = $sql_arr['name'];
-
-    $out['string'] = rcube_charset_convert($name, RCMAIL_CHARSET, $OUTPUT->get_charset());
-    if ($sql_arr['email'])
-      $out['string'] .= ' <' . $sql_arr['email'] . '>';
-
-    return $out;
+    if (empty($_POST['_to']) && empty($_POST['_cc']) && empty($_POST['_bcc'])
+        && empty($_POST['_subject']) && $_POST['_message']
+    ) {
+        $OUTPUT->show_message('sendingfailed', 'error');
+        $OUTPUT->send('iframe');
     }
 
-  return FALSE;  
-  }
-
-/**
- * go from this:
- * <img src=".../tiny_mce/plugins/emotions/images/smiley-cool.gif" border="0" alt="Cool" title="Cool" />
- *
- * to this:
- *
- * <IMG src="cid:smiley-cool.gif"/>
- * ...
- * ------part...
- * Content-Type: image/gif
- * Content-Transfer-Encoding: base64
- * Content-ID: <smiley-cool.gif>
- */
-function rcmail_attach_emoticons(&$mime_message)
-{
-  global $CONFIG;
-
-  $body = $mime_message->getHTMLBody();
-
-  // remove any null-byte characters before parsing
-  $body = preg_replace('/\x00/', '', $body);
-  
-  $searchstr = 'program/js/tiny_mce/plugins/emotions/img/';
-  $offset = 0;
-
-  // keep track of added images, so they're only added once
-  $included_images = array();
-
-  if (preg_match_all('# src=[\'"]([^\'"]+)#', $body, $matches, PREG_OFFSET_CAPTURE)) {
-    foreach ($matches[1] as $m) {
-      // find emoticon image tags
-      if (preg_match('#'.$searchstr.'(.*)$#', $m[0], $imatches)) {
-        $image_name = $imatches[1];
-
-        // sanitize image name so resulting attachment doesn't leave images dir
-        $image_name = preg_replace('/[^a-zA-Z0-9_\.\-]/i', '', $image_name);
-        $img_file = INSTALL_PATH . '/' . $searchstr . $image_name;
-
-        if (! in_array($image_name, $included_images)) {
-          // add the image to the MIME message
-          if (! $mime_message->addHTMLImage($img_file, 'image/gif', '', true, $image_name))
-            $OUTPUT->show_message("emoticonerror", 'error');
-          array_push($included_images, $image_name);
+    if ($sendmail_delay) {
+        $wait_sec = time() - $sendmail_delay - intval($RCMAIL->config->get('last_message_time'));
+        if ($wait_sec < 0) {
+            $OUTPUT->show_message('senttooquickly', 'error', array('sec' => $wait_sec * -1));
+            $OUTPUT->send('iframe');
         }
-
-        $body = substr_replace($body, $img_file, $m[1] + $offset, strlen($m[0]));
-        $offset += strlen($img_file) - strlen($m[0]);
-      }
     }
-  }
-
-  $mime_message->setHTMLBody($body);
-
-  return $body;
 }
 
-// parse email address input (and count addresses)
-function rcmail_email_input_format($mailto, $count=false)
-{
-  global $EMAIL_FORMAT_ERROR, $RECIPIENT_COUNT;
-
-  $regexp = array('/[,;]\s*[\r\n]+/', '/[\r\n]+/', '/[,;]\s*$/m', '/;/', '/(\S{1})(<\S+@\S+>)/U');
-  $replace = array(', ', ', ', '', ',', '\\1 \\2');
-
-  // replace new lines and strip ending ', ', make address input more valid
-  $mailto = trim(preg_replace($regexp, $replace, $mailto));
-
-  $result = array();
-  $items = rcube_explode_quoted_string(',', $mailto);
-
-  foreach($items as $item) {
-    $item = trim($item);
-    // address in brackets without name (do nothing)
-    if (preg_match('/^<\S+@\S+>$/', $item)) {
-      $result[] = $item;
-    // address without brackets and without name (add brackets)
-    } else if (preg_match('/^\S+@\S+$/', $item)) {
-      $result[] = '<'.$item.'>';
-    // address with name (handle name)
-    } else if (preg_match('/\S+@\S+>*$/', $item, $matches)) {
-      $address = $matches[0];
-      $name = str_replace($address, '', $item);
-      $name = trim($name);
-      if ($name && ($name[0] != '"' || $name[strlen($name)-1] != '"')
-          && preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $name)) {
-	  $name = '"'.addcslashes($name, '"').'"';
-      }
-      if (!preg_match('/^<\S+@\S+>$/', $address))
-        $address = '<'.$address.'>';
-
-      $result[] = $name.' '.$address;
-      $item = $address;
-    } else if (trim($item)) {
-      continue;
-    }
-
-    // check address format
-    $item = trim($item, '<>');
-    if ($item && !check_email($item)) {
-      $EMAIL_FORMAT_ERROR = $item;
-      return;
-    }
-  }
-
-  if ($count) {
-    $RECIPIENT_COUNT += count($result);
-  }
-
-  return implode(', ', $result);
-}
 
 /****** compose message ********/
 
-if (strlen($_POST['_draft_saveid']) > 3)
-  $olddraftmessageid = get_input_value('_draft_saveid', RCUBE_INPUT_POST);
-
-$message_id = sprintf('<%s@%s>', md5(uniqid('rcmail'.mt_rand(),true)), $RCMAIL->config->mail_domain($_SESSION['imap_host']));
+if (empty($COMPOSE['param']['message-id'])) {
+    $COMPOSE['param']['message-id'] = $RCMAIL->gen_message_id();
+}
+$message_id = $COMPOSE['param']['message-id'];
 
 // set default charset
-$input_charset = $OUTPUT->get_charset();
-$message_charset = isset($_POST['_charset']) ? $_POST['_charset'] : $input_charset;
+$message_charset = isset($_POST['_charset']) ? $_POST['_charset'] : $OUTPUT->get_charset();
 
 $EMAIL_FORMAT_ERROR = NULL;
-$RECIPIENT_COUNT = 0;
+$RECIPIENT_COUNT    = 0;
 
-$mailto = rcmail_email_input_format(get_input_value('_to', RCUBE_INPUT_POST, TRUE, $message_charset), true);
-$mailcc = rcmail_email_input_format(get_input_value('_cc', RCUBE_INPUT_POST, TRUE, $message_charset), true);
-$mailbcc = rcmail_email_input_format(get_input_value('_bcc', RCUBE_INPUT_POST, TRUE, $message_charset), true);
+$mailto  = rcmail_email_input_format(rcube_utils::get_input_value('_to', rcube_utils::INPUT_POST, TRUE, $message_charset), true);
+$mailcc  = rcmail_email_input_format(rcube_utils::get_input_value('_cc', rcube_utils::INPUT_POST, TRUE, $message_charset), true);
+$mailbcc = rcmail_email_input_format(rcube_utils::get_input_value('_bcc', rcube_utils::INPUT_POST, TRUE, $message_charset), true);
 
-if ($EMAIL_FORMAT_ERROR) {
-  $OUTPUT->show_message('emailformaterror', 'error', array('email' => $EMAIL_FORMAT_ERROR)); 
-  $OUTPUT->send('iframe');
+if ($EMAIL_FORMAT_ERROR && !$savedraft) {
+    $OUTPUT->show_message('emailformaterror', 'error', array('email' => $EMAIL_FORMAT_ERROR));
+    $OUTPUT->send('iframe');
 }
 
 if (empty($mailto) && !empty($mailcc)) {
-  $mailto = $mailcc;
-  $mailcc = null;
+    $mailto = $mailcc;
+    $mailcc = null;
 }
-else if (empty($mailto))
-  $mailto = 'undisclosed-recipients:;';
+else if (empty($mailto)) {
+    $mailto = 'undisclosed-recipients:;';
+}
 
-// get sender name and address
-$from = get_input_value('_from', RCUBE_INPUT_POST, true, $message_charset);
-$identity_arr = rcmail_get_identity($from);
+// Get sender name and address...
+$from = rcube_utils::get_input_value('_from', rcube_utils::INPUT_POST, true, $message_charset);
+// ... from identity...
+if (is_numeric($from)) {
+    if (is_array($identity_arr = rcmail_get_identity($from))) {
+        if ($identity_arr['mailto'])
+            $from = $identity_arr['mailto'];
+        if ($identity_arr['string'])
+            $from_string = $identity_arr['string'];
+    }
+    else {
+        $from = null;
+    }
+}
+// ... if there is no identity record, this might be a custom from
+else if ($from_string = rcmail_email_input_format($from)) {
+    if (preg_match('/(\S+@\S+)/', $from_string, $m))
+        $from = trim($m[1], '<>');
+    else
+        $from = null;
+}
 
-if (!$identity_arr && ($from = rcmail_email_input_format($from))) {
-  if (preg_match('/(\S+@\S+)/', $from, $m))
-    $identity_arr['mailto'] = $m[1];
-} else
-  $from = $identity_arr['mailto'];
+// check 'From' address (identity may be incomplete)
+if (!$savedraft && !$saveonly && empty($from)) {
+    $OUTPUT->show_message('nofromaddress', 'error');
+    $OUTPUT->send('iframe');
+}
 
-if (empty($identity_arr['string']))
-  $identity_arr['string'] = $from;
+if (!$from_string && $from) {
+    $from_string = $from;
+}
 
 // compose headers array
 $headers = array();
 
 // if configured, the Received headers goes to top, for good measure
-if ($CONFIG['http_received_header'])
-{
-  $nldlm = $RCMAIL->config->header_delimiter() . "\t";
-  // FROM/VIA
-  $http_header = 'from ';
-  if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
-    $host = $_SERVER['HTTP_X_FORWARDED_FOR'];
-    $hostname = gethostbyaddr($host);
-    if ($CONFIG['http_received_header_encrypt']) {
-      $http_header .= rcmail_encrypt_header($hostname);
-      if ($host != $hostname)
-        $http_header .= ' ('. rcmail_encrypt_header($host) . ')';
-    } else {
-      $http_header .= (($host != $hostname) ? $hostname : '[' . $host . ']');
-      if ($host != $hostname)
-        $http_header .= ' (['. $host .'])';
-    }
-    $http_header .= $nldlm . ' via ';
-  }
-  $host = $_SERVER['REMOTE_ADDR'];
-  $hostname = gethostbyaddr($host);
-  if ($CONFIG['http_received_header_encrypt']) {
-    $http_header .= rcmail_encrypt_header($hostname);
-    if ($host != $hostname)
-      $http_header .= ' ('. rcmail_encrypt_header($host) . ')';
-  } else {
-    $http_header .= (($host != $hostname) ? $hostname : '[' . $host . ']');
-    if ($host != $hostname)
-      $http_header .= ' (['. $host .'])';
-  }
-  // BY
-  $http_header .= $nldlm . 'by ' . $_SERVER['HTTP_HOST'];
-  // WITH
-  $http_header .= $nldlm . 'with HTTP (' . $_SERVER['SERVER_PROTOCOL'] .
-      ' '.$_SERVER['REQUEST_METHOD'] . '); ' . date('r');
-  $http_header = wordwrap($http_header, 69, $nldlm);
+if ($RCMAIL->config->get('http_received_header')) {
+    $nldlm       = "\r\n\t";
+    $http_header = 'from ';
 
-  $headers['Received'] = $http_header;
+    // FROM/VIA
+    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
+        $hosts        = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'], 2);
+        $http_header .= rcmail_received_host($hosts[0]) . $nldlm . ' via ';
+    }
+
+    $http_header .= rcmail_received_host($_SERVER['REMOTE_ADDR']);
+
+    // BY
+    $http_header .= $nldlm . 'by ' . $_SERVER['HTTP_HOST'];
+
+    // WITH
+    $http_header .= $nldlm . 'with HTTP (' . $_SERVER['SERVER_PROTOCOL']
+        . ' ' . $_SERVER['REQUEST_METHOD'] . '); ' . date('r');
+
+    $headers['Received'] = wordwrap($http_header, 69, $nldlm);
 }
 
-$headers['Date'] = date('r');
-$headers['From'] = rcube_charset_convert($identity_arr['string'], RCMAIL_CHARSET, $message_charset);
-$headers['To'] = $mailto;
+$headers['Date'] = $RCMAIL->user_date();
+$headers['From'] = rcube_charset::convert($from_string, RCUBE_CHARSET, $message_charset);
+$headers['To']   = $mailto;
 
 // additional recipients
-if (!empty($mailcc))
-  $headers['Cc'] = $mailcc;
-
-if (!empty($mailbcc))
-  $headers['Bcc'] = $mailbcc;
-  
-if (!empty($identity_arr['bcc'])) {
-  $headers['Bcc'] = ($headers['Bcc'] ? $headers['Bcc'].', ' : '') . $identity_arr['bcc'];
-  $RECIPIENT_COUNT ++;
+if (!empty($mailcc)) {
+    $headers['Cc'] = $mailcc;
+}
+if (!empty($mailbcc)) {
+    $headers['Bcc'] = $mailbcc;
 }
 
 if (($max_recipients = (int) $RCMAIL->config->get('max_recipients')) > 0) {
-  if ($RECIPIENT_COUNT > $max_recipients) {
-    $OUTPUT->show_message('toomanyrecipients', 'error', array('max' => $max_recipients));
-    $OUTPUT->send('iframe');
-  }
+    if ($RECIPIENT_COUNT > $max_recipients) {
+        $OUTPUT->show_message('toomanyrecipients', 'error', array('max' => $max_recipients));
+        $OUTPUT->send('iframe');
+    }
 }
 
+$dont_override = (array) $RCMAIL->config->get('dont_override');
+$mdn_enabled   = in_array('mdn_default', $dont_override) ? $RCMAIL->config->get('mdn_default') : !empty($_POST['_mdn']);
+$dsn_enabled   = in_array('dsn_default', $dont_override) ? $RCMAIL->config->get('dsn_default') : !empty($_POST['_dsn']);
+
 // add subject
-$headers['Subject'] = trim(get_input_value('_subject', RCUBE_INPUT_POST, TRUE, $message_charset));
+$headers['Subject'] = trim(rcube_utils::get_input_value('_subject', rcube_utils::INPUT_POST, TRUE, $message_charset));
 
-if (!empty($identity_arr['organization']))
-  $headers['Organization'] = $identity_arr['organization'];
+if (!empty($identity_arr['organization'])) {
+    $headers['Organization'] = $identity_arr['organization'];
+}
+if ($hdr = rcube_utils::get_input_value('_replyto', rcube_utils::INPUT_POST, TRUE, $message_charset)) {
+    $headers['Reply-To'] = rcmail_email_input_format($hdr);
+}
+if (!empty($headers['Reply-To'])) {
+    $headers['Mail-Reply-To'] = $headers['Reply-To'];
+}
+if ($hdr = rcube_utils::get_input_value('_followupto', rcube_utils::INPUT_POST, TRUE, $message_charset)) {
+    $headers['Mail-Followup-To'] = rcmail_email_input_format($hdr);
+}
 
-if (!empty($_POST['_replyto']))
-  $headers['Reply-To'] = rcmail_email_input_format(get_input_value('_replyto', RCUBE_INPUT_POST, TRUE, $message_charset));
-else if (!empty($identity_arr['reply-to']))
-  $headers['Reply-To'] = $identity_arr['reply-to'];
-
-if (!empty($_SESSION['compose']['reply_msgid']))
-  $headers['In-Reply-To'] = $_SESSION['compose']['reply_msgid'];
-  
 // remember reply/forward UIDs in special headers
-if (!empty($_SESSION['compose']['reply_uid']) && $savedraft)
-  $headers['X-Draft-Info'] = array('type' => 'reply', 'uid' => $_SESSION['compose']['reply_uid']);
-else if (!empty($_SESSION['compose']['forward_uid']) && $savedraft)
-  $headers['X-Draft-Info'] = array('type' => 'forward', 'uid' => $_SESSION['compose']['forward_uid']);
+if (!empty($COMPOSE['reply_uid']) && $savedraft) {
+    $headers['X-Draft-Info'] = array('type' => 'reply', 'uid' => $COMPOSE['reply_uid']);
+}
+else if (!empty($COMPOSE['forward_uid']) && $savedraft) {
+    $headers['X-Draft-Info'] = array('type' => 'forward', 'uid' => rcube_imap_generic::compressMessageSet($COMPOSE['forward_uid']));
+}
 
-if (!empty($_SESSION['compose']['references']))
-  $headers['References'] = $_SESSION['compose']['references'];
+if (!empty($COMPOSE['reply_msgid'])) {
+    $headers['In-Reply-To'] = $COMPOSE['reply_msgid'];
+}
+if (!empty($COMPOSE['references'])) {
+    $headers['References'] = $COMPOSE['references'];
+}
 
-if (!empty($_POST['_priority']))
-  {
-  $priority = intval($_POST['_priority']);
-  $a_priorities = array(1=>'highest', 2=>'high', 4=>'low', 5=>'lowest');
-  if ($str_priority = $a_priorities[$priority])
-    $headers['X-Priority'] = sprintf("%d (%s)", $priority, ucfirst($str_priority));
-  }
+if (!empty($_POST['_priority'])) {
+    $priority     = intval($_POST['_priority']);
+    $a_priorities = array(1 => 'highest', 2 => 'high', 4 => 'low', 5 => 'lowest');
 
-if (!empty($_POST['_receipt']))
-  {
-  $headers['Return-Receipt-To'] = $identity_arr['string'];
-  $headers['Disposition-Notification-To'] = $identity_arr['string'];
-  }
+    if ($str_priority = $a_priorities[$priority]) {
+        $headers['X-Priority'] = sprintf("%d (%s)", $priority, ucfirst($str_priority));
+    }
+}
+
+if ($mdn_enabled) {
+    $headers['Return-Receipt-To']           = $from_string;
+    $headers['Disposition-Notification-To'] = $from_string;
+}
 
 // additional headers
 $headers['Message-ID'] = $message_id;
-$headers['X-Sender'] = $from;
+$headers['X-Sender']   = $from;
 
-if (is_array($headers['X-Draft-Info']))
-  $headers['X-Draft-Info'] = rcmail_draftinfo_encode($headers['X-Draft-Info'] + array('folder' => $_SESSION['compose']['mailbox']));
-
-if (!empty($CONFIG['useragent']))
-  $headers['User-Agent'] = $CONFIG['useragent'];
+if (is_array($headers['X-Draft-Info'])) {
+    $headers['X-Draft-Info'] = rcmail_draftinfo_encode($headers['X-Draft-Info'] + array('folder' => $COMPOSE['mailbox']));
+}
+if ($hdr = $RCMAIL->config->get('useragent')) {
+    $headers['User-Agent'] = $hdr;
+}
 
 // exec hook for header checking and manipulation
-$data = $RCMAIL->plugins->exec_hook('outgoing_message_headers', array('headers' => $headers));
+// Depracated: use message_before_send hook instead
+$data = $RCMAIL->plugins->exec_hook('message_outgoing_headers', array('headers' => $headers));
 
 // sending aborted by plugin
 if ($data['abort'] && !$savedraft) {
-  $OUTPUT->show_message($data['message'] ? $data['message'] : 'sendingfailed');
-  $OUTPUT->send('iframe');
+    $OUTPUT->show_message($data['message'] ?: 'sendingfailed');
+    $OUTPUT->send('iframe');
 }
-else
-  $headers = $data['headers'];
+else {
+    $headers = $data['headers'];
+}
 
-
-$isHtml = (bool) get_input_value('_is_html', RCUBE_INPUT_POST);
+$isHtml = (bool) rcube_utils::get_input_value('_is_html', rcube_utils::INPUT_POST);
 
 // fetch message body
-$message_body = get_input_value('_message', RCUBE_INPUT_POST, TRUE, $message_charset);
+$message_body = rcube_utils::get_input_value('_message', rcube_utils::INPUT_POST, TRUE, $message_charset);
+
+if (isset($_POST['_pgpmime'])) {
+    $pgp_mime     = rcube_utils::get_input_value('_pgpmime', rcube_utils::INPUT_POST);
+    $isHtml       = false;
+    $message_body = '';
+
+    // clear unencrypted attachments
+    foreach ((array) $COMPOSE['attachments'] as $attach) {
+        $RCMAIL->plugins->exec_hook('attachment_delete', $attach);
+    }
+
+    $COMPOSE['attachments'] = array();
+}
+
+if ($isHtml) {
+    $bstyle = array();
+
+    if ($font_size = $RCMAIL->config->get('default_font_size')) {
+        $bstyle[] = 'font-size: ' . $font_size;
+    }
+    if ($font_family = $RCMAIL->config->get('default_font')) {
+        $bstyle[] = 'font-family: ' . rcmail::font_defs($font_family);
+    }
+
+    // append doctype and html/body wrappers
+    $bstyle       = !empty($bstyle) ? (" style='" . implode($bstyle, '; ') . "'") : '';
+    $message_body = '<html><head>'
+        . '<meta http-equiv="Content-Type" content="text/html; charset=' . $message_charset . '" /></head>'
+        . "<body" . $bstyle . ">\r\n" . $message_body;
+}
 
 if (!$savedraft) {
-  if ($isHtml) {
-    // remove signature's div ID
-    $message_body = preg_replace('/\s*id="_rc_sig"/', '', $message_body);
+    if ($isHtml) {
+        $b_style   = 'padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0';
+        $pre_style = 'margin: 0; padding: 0; font-family: monospace';
 
-    // add inline css for blockquotes
-    $bstyle = 'padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px; width:100%';
-    $message_body = preg_replace('/<blockquote>/',
-	'<blockquote type="cite" style="'.$bstyle.'">', $message_body);
-  }
-  // generic footer for all messages
-  if (!empty($CONFIG['generic_message_footer'])) {
-    $footer = file_get_contents(realpath($CONFIG['generic_message_footer']));
-    $footer = rcube_charset_convert($footer, RCMAIL_CHARSET, $message_charset);
-  }
+        $message_body = preg_replace(
+            array(
+                // remove empty signature div
+                '/<div id="_rc_sig">(&nbsp;)?<\/div>[\s\r\n]*$/',
+                // remove signature's div ID
+                '/\s*id="_rc_sig"/',
+                // add inline css for blockquotes and container
+                '/<blockquote>/',
+                '/<div class="pre">/',
+                // convert TinyMCE's new-line sequences (#1490463)
+                '/<p>&nbsp;<\/p>/',
+            ),
+            array(
+                '',
+                '',
+                '<blockquote type="cite" style="'.$b_style.'">',
+                '<div class="pre" style="'.$pre_style.'">',
+                '<p><br /></p>',
+            ),
+            $message_body);
+    }
+
+    // Check spelling before send
+    if ($RCMAIL->config->get('spellcheck_before_send') && $RCMAIL->config->get('enable_spellcheck')
+        && empty($COMPOSE['spell_checked']) && !empty($message_body)
+    ) {
+        $message_body = str_replace("\r\n", "\n", $message_body);
+        $spellchecker = new rcube_spellchecker(rcube_utils::get_input_value('_lang', rcube_utils::INPUT_GPC));
+        $spell_result = $spellchecker->check($message_body, $isHtml);
+
+        $COMPOSE['spell_checked'] = true;
+
+        if (!$spell_result) {
+            if ($isHtml) {
+                $result['words']      = $spellchecker->get();
+                $result['dictionary'] = (bool) $RCMAIL->config->get('spellcheck_dictionary');
+            }
+            else {
+                $result = $spellchecker->get_xml();
+            }
+
+            $OUTPUT->show_message('mispellingsfound', 'error');
+            $OUTPUT->command('spellcheck_resume', $result);
+            $OUTPUT->send('iframe');
+        }
+    }
+
+    // generic footer for all messages
+    if ($footer = rcmail_generic_message_footer($isHtml)) {
+        $footer = rcube_charset::convert($footer, RCUBE_CHARSET, $message_charset);
+        $message_body .= "\r\n" . $footer;
+    }
+}
+
+if ($isHtml) {
+    $message_body .= "\r\n</body></html>\r\n";
+}
+
+// sort attachments to make sure the order is the same as in the UI (#1488423)
+if ($files = rcube_utils::get_input_value('_attachments', rcube_utils::INPUT_POST)) {
+    $files = explode(',', $files);
+    $files = array_flip($files);
+    foreach ($files as $idx => $val) {
+        $files[$idx] = $COMPOSE['attachments'][$idx];
+        unset($COMPOSE['attachments'][$idx]);
+    }
+
+    $COMPOSE['attachments'] = array_merge(array_filter($files), $COMPOSE['attachments']);
 }
 
 // set line length for body wrapping
@@ -402,105 +358,152 @@
 @set_time_limit(0);
 
 // create PEAR::Mail_mime instance
-$MAIL_MIME = new Mail_mime($RCMAIL->config->header_delimiter());
+$MAIL_MIME = new Mail_mime("\r\n");
 
 // Check if we have enough memory to handle the message in it
 // It's faster than using files, so we'll do this if we only can
-if (is_array($_SESSION['compose']['attachments']) && $CONFIG['smtp_server']
-  && ($mem_limit = parse_bytes(ini_get('memory_limit'))))
-{
-  $memory = function_exists('memory_get_usage') ? memory_get_usage() : 16*1024*1024; // safe value: 16MB
+if (is_array($COMPOSE['attachments']) && $RCMAIL->config->get('smtp_server')
+  && ($mem_limit = parse_bytes(ini_get('memory_limit')))
+) {
+    $memory = 0;
+    foreach ($COMPOSE['attachments'] as $id => $attachment) {
+        $memory += $attachment['size'];
+    }
 
-  foreach ($_SESSION['compose']['attachments'] as $id => $attachment)
-    $memory += $attachment['size'];
-
-  // Yeah, Net_SMTP needs up to 12x more memory, 1.33 is for base64
-  if ($memory * 1.33 * 12 > $mem_limit)
-    $MAIL_MIME->setParam('delay_file_io', true);
+    // Yeah, Net_SMTP needs up to 12x more memory, 1.33 is for base64
+    if (!rcube_utils::mem_check($memory * 1.33 * 12)) {
+        $MAIL_MIME->setParam('delay_file_io', true);
+    }
 }
 
 // For HTML-formatted messages, construct the MIME message with both
 // the HTML part and the plain-text part
-
 if ($isHtml) {
-  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body', array('body' => $message_body, 'type' => 'html', 'message' => $MAIL_MIME));
-  $MAIL_MIME->setHTMLBody($plugin['body'] . ($footer ? "\r\n<pre>".$footer.'</pre>' : ''));
+    $plugin = $RCMAIL->plugins->exec_hook('message_outgoing_body',
+        array('body' => $message_body, 'type' => 'html', 'message' => $MAIL_MIME));
 
-  // add a plain text version of the e-mail as an alternative part.
-  $h2t = new html2text($plugin['body'], false, true, 0);
-  $plainTextPart = rc_wordwrap($h2t->get_text(), $LINE_LENGTH, "\r\n") . ($footer ? "\r\n".$footer : '');
-  $plainTextPart = wordwrap($plainTextPart, 998, "\r\n", true);
-  if (!strlen($plainTextPart)) {
-    // empty message body breaks attachment handling in drafts 
-    $plainTextPart = "\r\n"; 
-  }
-  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body', array('body' => $plainTextPart, 'type' => 'alternative', 'message' => $MAIL_MIME));
-  $MAIL_MIME->setTXTBody($plugin['body']);
+    $MAIL_MIME->setHTMLBody($plugin['body']);
 
-  // look for "emoticon" images from TinyMCE and copy into message as attachments
-  $message_body = rcmail_attach_emoticons($MAIL_MIME);
+    $plainTextPart = $RCMAIL->html2text($plugin['body'], array('width' => 0, 'charset' => $message_charset));
+    $plainTextPart = rcube_mime::wordwrap($plainTextPart, $LINE_LENGTH, "\r\n", false, $message_charset);
+    $plainTextPart = wordwrap($plainTextPart, 998, "\r\n", true);
+
+    // make sure all line endings are CRLF (#1486712)
+    $plainTextPart = preg_replace('/\r?\n/', "\r\n", $plainTextPart);
+
+    $plugin = $RCMAIL->plugins->exec_hook('message_outgoing_body',
+        array('body' => $plainTextPart, 'type' => 'alternative', 'message' => $MAIL_MIME));
+
+    // add a plain text version of the e-mail as an alternative part.
+    $MAIL_MIME->setTXTBody($plugin['body']);
+
+    // Extract image Data URIs into message attachments (#1488502)
+    rcmail_extract_inline_images($MAIL_MIME, $from);
 }
 else {
-  if ($footer)
-    $message_body .= "\r\n" . $footer;
-  
-  // compose format=flowed content if enabled and not a reply message
-  if (empty($_SESSION['compose']['reply_msgid']) && ($flowed = $RCMAIL->config->get('send_format_flowed', true)))
-    $message_body = rcube_message::format_flowed($message_body, $LINE_LENGTH);
-  else
-    $message_body = rc_wordwrap($message_body, min(79, $LINE_LENGTH + 8), "\r\n");  // +8: be generous with quoted lines
-  
-  $message_body = wordwrap($message_body, 998, "\r\n", true);
-  if (!strlen($message_body)) { 
-    // empty message body breaks attachment handling in drafts 
-    $message_body = "\r\n"; 
-  }
-  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body', array('body' => $message_body, 'type' => 'plain', 'message' => $MAIL_MIME));
-  $MAIL_MIME->setTXTBody($plugin['body'], false, true);
+    $plugin = $RCMAIL->plugins->exec_hook('message_outgoing_body',
+        array('body' => $message_body, 'type' => 'plain', 'message' => $MAIL_MIME));
+
+    $message_body = $plugin['body'];
+
+    // compose format=flowed content if enabled
+    if ($flowed = ($savedraft || $RCMAIL->config->get('send_format_flowed', true)))
+        $message_body = rcube_mime::format_flowed($message_body, min($LINE_LENGTH+2, 79), $message_charset);
+    else
+        $message_body = rcube_mime::wordwrap($message_body, $LINE_LENGTH, "\r\n", false, $message_charset);
+
+    $message_body = wordwrap($message_body, 998, "\r\n", true);
+
+    $MAIL_MIME->setTXTBody($message_body, false, true);
 }
 
 // add stored attachments, if any
-if (is_array($_SESSION['compose']['attachments']))
-{
-  foreach ($_SESSION['compose']['attachments'] as $id => $attachment) {
-    // This hook retrieves the attachment contents from the file storage backend
-    $attachment = $RCMAIL->plugins->exec_hook('get_attachment', $attachment);
+if (is_array($COMPOSE['attachments'])) {
+    foreach ($COMPOSE['attachments'] as $id => $attachment) {
+        // This hook retrieves the attachment contents from the file storage backend
+        $attachment = $RCMAIL->plugins->exec_hook('attachment_get', $attachment);
 
-    $dispurl = '/\ssrc\s*=\s*[\'"]*\S+display-attachment\S+file=rcmfile' . preg_quote($attachment['id']) . '[\s\'"]\s*/';
-    $message_body = $MAIL_MIME->getHTMLBody();
-    if ($isHtml && (preg_match($dispurl, $message_body) > 0)) {
-      $message_body = preg_replace($dispurl, ' src="'.$attachment['name'].'" ', $message_body);
-      $MAIL_MIME->setHTMLBody($message_body);
+        if ($isHtml) {
+            $dispurl      = '/[\'"]\S+display-attachment\S+file=rcmfile' . preg_quote($attachment['id']) . '[\'"]/';
+            $message_body = $MAIL_MIME->getHTMLBody();
+            $is_inline    = preg_match($dispurl, $message_body);
+        }
+        else {
+            $is_inline = false;
+        }
 
-      if ($attachment['data'])
-        $MAIL_MIME->addHTMLImage($attachment['data'], $attachment['mimetype'], $attachment['name'], false);
-      else
-        $MAIL_MIME->addHTMLImage($attachment['path'], $attachment['mimetype'], $attachment['name'], true);
+        // inline image
+        if ($is_inline) {
+            // Mail_Mime does not support many inline attachments with the same name (#1489406)
+            // we'll generate cid: urls here to workaround this
+            $cid = preg_replace('/[^0-9a-zA-Z]/', '', uniqid(time(), true));
+            if (preg_match('#(@[0-9a-zA-Z\-\.]+)#', $from, $matches)) {
+                $cid .= $matches[1];
+            }
+            else {
+                $cid .= '@localhost';
+            }
+
+            $message_body = preg_replace($dispurl, '"cid:' . $cid . '"', $message_body);
+
+            $MAIL_MIME->setHTMLBody($message_body);
+
+            if ($attachment['data'])
+                $MAIL_MIME->addHTMLImage($attachment['data'], $attachment['mimetype'], $attachment['name'], false, $cid);
+            else
+                $MAIL_MIME->addHTMLImage($attachment['path'], $attachment['mimetype'], $attachment['name'], true, $cid);
+        }
+        else {
+            $ctype   = str_replace('image/pjpeg', 'image/jpeg', $attachment['mimetype']); // #1484914
+            $file    = $attachment['data'] ?: $attachment['path'];
+            $folding = (int) $RCMAIL->config->get('mime_param_folding');
+
+            $MAIL_MIME->addAttachment($file,
+                $ctype,
+                $attachment['name'],
+                $attachment['data'] ? false : true,
+                $ctype == 'message/rfc822' ? '8bit' : 'base64',
+                'attachment',
+                $attachment['charset'],
+                '', '',
+                $folding ? 'quoted-printable' : NULL,
+                $folding == 2 ? 'quoted-printable' : NULL,
+                '', RCUBE_CHARSET
+            );
+        }
     }
-    else {
-      $ctype = str_replace('image/pjpeg', 'image/jpeg', $attachment['mimetype']); // #1484914
-      $file = $attachment['data'] ? $attachment['data'] : $attachment['path'];
-
-      // .eml attachments send inline
-      $MAIL_MIME->addAttachment($file,
-        $ctype, 
-        $attachment['name'],
-        ($attachment['data'] ? false : true),
-        ($ctype == 'message/rfc822' ? '8bit' : 'base64'),
-        ($ctype == 'message/rfc822' ? 'inline' : 'attachment'),
-        $message_charset, '', '', 
-        $CONFIG['mime_param_folding'] ? 'quoted-printable' : NULL,
-        $CONFIG['mime_param_folding'] == 2 ? 'quoted-printable' : NULL
-      );
-    }
-  }
 }
 
 // choose transfer encoding for plain/text body
-if (preg_match('/[^\x00-\x7F]/', $MAIL_MIME->getTXTBody()))
-  $transfer_encoding = $RCMAIL->config->get('force_7bit') ? 'quoted-printable' : '8bit';
-else
-  $transfer_encoding = '7bit';
+if (preg_match('/[^\x00-\x7F]/', $MAIL_MIME->getTXTBody())) {
+    $text_charset      = $message_charset;
+    $transfer_encoding = $RCMAIL->config->get('force_7bit') ? 'quoted-printable' : '8bit';
+}
+else {
+    $text_charset      = 'US-ASCII';
+    $transfer_encoding = '7bit';
+}
+
+if ($flowed) {
+    $text_charset .= ";\r\n format=flowed";
+}
+
+// compose PGP/Mime message
+if ($pgp_mime) {
+    $MAIL_MIME->addAttachment(new Mail_mimePart('Version: 1', array(
+            'content_type' => 'application/pgp-encrypted',
+            'description'  => 'PGP/MIME version identification',
+    )));
+
+    $MAIL_MIME->addAttachment(new Mail_mimePart($pgp_mime, array(
+            'content_type' => 'application/octet-stream',
+            'filename'     => 'encrypted.asc',
+            'disposition'  => 'inline',
+    )));
+
+    $MAIL_MIME->setContentType('multipart/encrypted', array('protocol' => 'application/pgp-encrypted'));
+    $MAIL_MIME->setParam('preamble', 'This is an OpenPGP/MIME encrypted message (RFC 2440 and 3156)');
+}
 
 // encoding settings for mail composing
 $MAIL_MIME->setParam('text_encoding', $transfer_encoding);
@@ -508,174 +511,430 @@
 $MAIL_MIME->setParam('head_encoding', 'quoted-printable');
 $MAIL_MIME->setParam('head_charset', $message_charset);
 $MAIL_MIME->setParam('html_charset', $message_charset);
-$MAIL_MIME->setParam('text_charset', $message_charset . ($flowed ? ";\r\n format=flowed" : ''));
-
-// encoding subject header with mb_encode provides better results with asian characters
-if (function_exists('mb_encode_mimeheader'))
-{
-  mb_internal_encoding($message_charset);
-  $headers['Subject'] = mb_encode_mimeheader($headers['Subject'],
-    $message_charset, 'Q', $RCMAIL->config->header_delimiter(), 8);
-  mb_internal_encoding(RCMAIL_CHARSET);
-}
+$MAIL_MIME->setParam('text_charset', $text_charset);
 
 // pass headers to message object
 $MAIL_MIME->headers($headers);
 
-// Begin SMTP Delivery Block 
-if (!$savedraft)
-{
-  // check for 'From' address (identity may be incomplete)
-  if ($identity_arr && !$identity_arr['mailto']) {
-    $OUTPUT->show_message('nofromaddress', 'error');
-    $OUTPUT->send('iframe'); 
-  }
+// This hook allows to modify the message before send or save action
+$plugin    = $RCMAIL->plugins->exec_hook('message_ready', array('message' => $MAIL_MIME));
+$MAIL_MIME = $plugin['message'];
 
-  $sent = rcmail_deliver_message($MAIL_MIME, $from, $mailto, $smtp_error, $mailbody_file);
+// Begin SMTP Delivery Block
+if (!$savedraft && !$saveonly) {
+    // Handle Delivery Status Notification request
+    $smtp_opts['dsn'] = $dsn_enabled;
 
-  // return to compose page if sending failed
-  if (!$sent)
-    {
-    // remove temp file
-    if ($mailbody_file) {
-      unlink($mailbody_file);
-      }
+    $sent = $RCMAIL->deliver_message($MAIL_MIME, $from, $mailto,
+        $smtp_error, $mailbody_file, $smtp_opts);
 
-    if ($smtp_error)
-      $OUTPUT->show_message($smtp_error['label'], 'error', $smtp_error['vars']); 
-    else
-      $OUTPUT->show_message('sendingfailed', 'error'); 
-    $OUTPUT->send('iframe');
+    // return to compose page if sending failed
+    if (!$sent) {
+        // remove temp file
+        if ($mailbody_file) {
+            unlink($mailbody_file);
+        }
+
+        if ($smtp_error)
+            $OUTPUT->show_message($smtp_error['label'], 'error', $smtp_error['vars']); 
+        else
+            $OUTPUT->show_message('sendingfailed', 'error'); 
+        $OUTPUT->send('iframe');
     }
 
-  // save message sent time
-  if (!empty($CONFIG['sendmail_delay']))
-    $RCMAIL->user->save_prefs(array('last_message_time' => time()));
-  
-  // set replied/forwarded flag
-  if ($_SESSION['compose']['reply_uid'])
-    $IMAP->set_flag($_SESSION['compose']['reply_uid'], 'ANSWERED', $_SESSION['compose']['mailbox']);
-  else if ($_SESSION['compose']['forward_uid'])
-    $IMAP->set_flag($_SESSION['compose']['forward_uid'], 'FORWARDED', $_SESSION['compose']['mailbox']);
+    // save message sent time
+    if ($sendmail_delay) {
+        $RCMAIL->user->save_prefs(array('last_message_time' => time()));
+    }
 
-} // End of SMTP Delivery Block
-
+    // set replied/forwarded flag
+    if ($COMPOSE['reply_uid']) {
+        foreach (rcmail::get_uids($COMPOSE['reply_uid'], $COMPOSE['mailbox']) as $mbox => $uids) {
+            $RCMAIL->storage->set_flag($uids, 'ANSWERED', $mbox);
+        }
+    }
+    else if ($COMPOSE['forward_uid']) {
+        foreach (rcmail::get_uids($COMPOSE['forward_uid'], $COMPOSE['mailbox']) as $mbox => $uids) {
+            $RCMAIL->storage->set_flag($uids, 'FORWARDED', $mbox);
+        }
+    }
+}
 
 // Determine which folder to save message
-if ($savedraft)
-  $store_target = $CONFIG['drafts_mbox'];
-else	
-  $store_target = isset($_POST['_store_target']) ? get_input_value('_store_target', RCUBE_INPUT_POST) : $CONFIG['sent_mbox'];
+if ($savedraft) {
+    $store_target = $drafts_mbox;
+}
+else if (!$RCMAIL->config->get('no_save_sent_messages')) {
+    if (isset($_POST['_store_target'])) {
+        $store_target = rcube_utils::get_input_value('_store_target', rcube_utils::INPUT_POST);
+    }
+    else {
+        $store_target = $RCMAIL->config->get('sent_mbox');
+    }
+}
 
-if ($store_target)
-  {
-  // check if folder is subscribed
-  if ($IMAP->mailbox_exists($store_target, true))
-    $store_folder = true;
-  // folder may be existing but not subscribed (#1485241)
-  else if (!$IMAP->mailbox_exists($store_target))
-    $store_folder = $IMAP->create_mailbox($store_target, true);
-  else if ($IMAP->subscribe($store_target))
-    $store_folder = true;
+if ($store_target) {
+    // check if folder is subscribed
+    if ($RCMAIL->storage->folder_exists($store_target, true)) {
+        $store_folder = true;
+    }
+    // folder may be existing but not subscribed (#1485241)
+    else if (!$RCMAIL->storage->folder_exists($store_target)) {
+        $store_folder = $RCMAIL->storage->create_folder($store_target, true);
+    }
+    else if ($RCMAIL->storage->subscribe($store_target)) {
+        $store_folder = true;
+    }
 
-  // append message to sent box
-  if ($store_folder) {
+    // append message to sent box
+    if ($store_folder) {
+        // message body in file
+        if ($mailbody_file || $MAIL_MIME->getParam('delay_file_io')) {
+            $headers = $MAIL_MIME->txtHeaders();
 
-    // message body in file
-    if ($mailbody_file || $MAIL_MIME->getParam('delay_file_io')) {
-      $headers = $MAIL_MIME->txtHeaders();
-      
-      // file already created
-      if ($mailbody_file)
-        $msg = $mailbody_file;
-      else {
-        $temp_dir = $RCMAIL->config->get('temp_dir');
-        $mailbody_file = tempnam($temp_dir, 'rcmMsg');
-        if (!PEAR::isError($msg = $MAIL_MIME->saveMessageBody($mailbody_file)))
-          $msg = $mailbody_file;
+            // file already created
+            if ($mailbody_file) {
+                $msg = $mailbody_file;
+            }
+            else {
+                $temp_dir      = $RCMAIL->config->get('temp_dir');
+                $mailbody_file = tempnam($temp_dir, 'rcmMsg');
+                $msg           = $MAIL_MIME->saveMessageBody($mailbody_file);
+
+                if (!is_a($msg, 'PEAR_Error')) {
+                    $msg = $mailbody_file;
+                }
+            }
         }
-      }
-    else {
-      $msg = $MAIL_MIME->getMessage();
-      $headers = '';
-      }
+        else {
+            $msg     = $MAIL_MIME->getMessage();
+            $headers = '';
+        }
 
-    if (PEAR::isError($msg))
-      raise_error(array('code' => 600, 'type' => 'php',
-	    'file' => __FILE__, 'line' => __LINE__,
-            'message' => "Could not create message: ".$msg->getMessage()),
-            TRUE, FALSE);
-    else {
-      $saved = $IMAP->save_message($store_target, $msg, $headers, $mailbody_file ? true : false);
-      }
+        if (is_a($msg, 'PEAR_Error')) {
+            rcube::raise_error(array('code' => 650, 'type' => 'php',
+                'file' => __FILE__, 'line' => __LINE__,
+                'message' => "Could not create message: ".$msg->getMessage()),
+                true, false);
+        }
+        else {
+            $saved = $RCMAIL->storage->save_message($store_target, $msg, $headers,
+                $mailbody_file ? true : false, array('SEEN'));
+        }
 
-    if ($mailbody_file) {
-      unlink($mailbody_file);
-      $mailbody_file = null;
-      }
+        if ($mailbody_file) {
+            unlink($mailbody_file);
+            $mailbody_file = null;
+        }
+    }
 
     // raise error if saving failed
     if (!$saved) {
-      raise_error(array('code' => 800, 'type' => 'imap',
-	    'file' => __FILE__, 'line' => __LINE__,
-            'message' => "Could not save message in $store_target"), TRUE, FALSE);
-    
-      if ($savedraft) {
-        $OUTPUT->show_message('errorsaving', 'error');
-        $OUTPUT->send('iframe');
+        rcube::raise_error(array('code' => 800, 'type' => 'imap',
+            'file' => __FILE__, 'line' => __LINE__,
+            'message' => "Could not save message in $store_target"), true, false);
+
+        if ($savedraft) {
+            $RCMAIL->display_server_error('errorsaving');
+
+            // start the auto-save timer again
+            $OUTPUT->command('auto_save_start');
+            $OUTPUT->send('iframe');
         }
-      }
     }
-
-  if ($olddraftmessageid)
-    {
-    // delete previous saved draft
-    $a_deleteid = $IMAP->search_once($CONFIG['drafts_mbox'],
-        'HEADER Message-ID '.$olddraftmessageid, true);
-    $deleted = $IMAP->delete_message($a_deleteid, $CONFIG['drafts_mbox']);
-
-    // raise error if deletion of old draft failed
-    if (!$deleted)
-      raise_error(array('code' => 800, 'type' => 'imap',
-    		'file' => __FILE__, 'line' => __LINE__,
-                'message' => "Could not delete message from ".$CONFIG['drafts_mbox']), TRUE, FALSE);
-    }
-  }
+}
 // remove temp file
 else if ($mailbody_file) {
-  unlink($mailbody_file);
-  }
+    unlink($mailbody_file);
+}
+
+// delete previous saved draft
+$old_id = rcube_utils::get_input_value('_draft_saveid', rcube_utils::INPUT_POST);
+if ($old_id && ($sent || $saved)) {
+    $deleted = $RCMAIL->storage->delete_message($old_id, $drafts_mbox);
+
+    // raise error if deletion of old draft failed
+    if (!$deleted) {
+        rcube::raise_error(array('code' => 800, 'type' => 'imap',
+            'file' => __FILE__, 'line' => __LINE__,
+            'message' => "Could not delete message from $drafts_mbox"), true, false);
+    }
+}
+
+if ($savedraft) {
+    // remember new draft-uid ($saved could be an UID or true/false here)
+    if ($saved && is_bool($saved)) {
+        $index = $RCMAIL->storage->search_once($drafts_mbox, 'HEADER Message-ID ' . $message_id);
+        $saved = @max($index->get());
+    }
+
+    if ($saved) {
+        $plugin = $RCMAIL->plugins->exec_hook('message_draftsaved',
+            array('msgid' => $message_id, 'uid' => $saved, 'folder' => $store_target));
+
+        // display success
+        $OUTPUT->show_message($plugin['message'] ?: 'messagesaved', 'confirmation');
+
+        // update "_draft_saveid" and the "cmp_hash" to prevent "Unsaved changes" warning
+        $COMPOSE['param']['draft_uid'] = $plugin['uid'];
+        $OUTPUT->command('set_draft_id', $plugin['uid']);
+        $OUTPUT->command('compose_field_hash', true);
+    }
+
+    // start the auto-save timer again
+    $OUTPUT->command('auto_save_start');
+}
+else {
+    // Collect folders which could contain the composed message,
+    // we'll refresh the list if currently opened folder is one of them (#1490238)
+    $folders = array();
+
+    if (!$saveonly) {
+        if (in_array($COMPOSE['mode'], array('reply', 'forward', 'draft'))) {
+            $folders[] = $COMPOSE['mailbox'];
+        }
+        if (!empty($COMPOSE['param']['draft_uid']) && $drafts_mbox) {
+            $folders[] = $drafts_mbox;
+        }
+    }
+
+    if ($store_folder && !$saved) {
+        $params = $saveonly ? null : array('prefix' => true);
+        $RCMAIL->display_server_error('errorsavingsent', null, null, $params);
+        if ($saveonly) {
+            $OUTPUT->send('iframe');
+        }
+
+        $save_error = true;
+    }
+    else {
+        rcmail_compose_cleanup($COMPOSE_ID);
+        $OUTPUT->command('remove_compose_data', $COMPOSE_ID);
+
+        if ($store_folder) {
+            $folders[] = $store_target;
+        }
+    }
+
+    $msg = $RCMAIL->gettext($saveonly ? 'successfullysaved' : 'messagesent');
+
+    $OUTPUT->command('sent_successfully', 'confirmation', $msg, $folders, $save_error);
+}
+
+$OUTPUT->send('iframe');
 
 
-if ($savedraft)
-  {
-  $msgid = strtr($message_id, array('>' => '', '<' => ''));
-  
-  // remember new draft-uid
-  $draftuids = $IMAP->search_once($CONFIG['drafts_mbox'], 'HEADER Message-ID '.$msgid, true);
-  $_SESSION['compose']['param']['_draft_uid'] = $draftuids[0];
+/****** message sending functions ********/
 
-  // display success
-  $OUTPUT->show_message('messagesaved', 'confirmation');
+function rcmail_received_host($host)
+{
+    $hostname = gethostbyaddr($host);
 
-  // update "_draft_saveid" and the "cmp_hash" to prevent "Unsaved changes" warning
-  $OUTPUT->command('set_draft_id', $msgid);
-  $OUTPUT->command('compose_field_hash', true);
+    $result = rcmail_encrypt_host($hostname);
 
-  // start the auto-save timer again
-  $OUTPUT->command('auto_save_start');
+    if ($host != $hostname) {
+        $result .= ' (' . rcmail_encrypt_host($host) . ')';
+    }
 
-  $OUTPUT->send('iframe');
-  }
-else
-  {
-  rcmail_compose_cleanup();
+    return $result;
+}
 
-  if ($store_folder && !$saved)
-    $OUTPUT->command('sent_successfully', 'error', rcube_label('errorsavingsent'));
-  else
-    $OUTPUT->command('sent_successfully', 'confirmation', rcube_label('messagesent'));
-  $OUTPUT->send('iframe');
-  }
+// encrypt host IP or hostname for Received header
+function rcmail_encrypt_host($host)
+{
+    global $RCMAIL;
 
-?>
+    if ($RCMAIL->config->get('http_received_header_encrypt')) {
+        return $RCMAIL->encrypt($host);
+    }
+
+    if (!preg_match('/[^0-9:.]/', $host)) {
+        return "[$host]";
+    }
+
+    return $host;
+}
+
+// get identity record
+function rcmail_get_identity($id)
+{
+    global $RCMAIL, $message_charset;
+
+    if ($sql_arr = $RCMAIL->user->get_identity($id)) {
+        $out = $sql_arr;
+
+        if ($message_charset != RCUBE_CHARSET) {
+            foreach ($out as $k => $v) {
+                $out[$k] = rcube_charset::convert($v, RCUBE_CHARSET, $message_charset);
+            }
+        }
+
+        $out['mailto'] = $sql_arr['email'];
+        $out['string'] = format_email_recipient($sql_arr['email'], $sql_arr['name']);
+
+        return $out;
+    }
+
+    return false;
+}
+
+/**
+ * Extract image attachments from HTML content (data URIs)
+ */
+function rcmail_extract_inline_images($mime_message, $from)
+{
+    $body   = $mime_message->getHTMLBody();
+    $offset = 0;
+    $list   = array();
+    $domain = 'localhost';
+    $regexp = '#img[^>]+src=[\'"](data:([^;]*);base64,([a-z0-9+/=\r\n]+))([\'"])#i';
+
+    if (preg_match_all($regexp, $body, $matches, PREG_OFFSET_CAPTURE)) {
+        // get domain for the Content-ID, must be the same as in Mail_Mime::get()
+        if (preg_match('#@([0-9a-zA-Z\-\.]+)#', $from, $m)) {
+            $domain = $m[1];
+        }
+
+        foreach ($matches[1] as $idx => $m) {
+            $data = preg_replace('/\r\n/', '', $matches[3][$idx][0]);
+            $data = base64_decode($data);
+
+            if (empty($data)) {
+                continue;
+            }
+
+            $hash      = md5($data) . '@' . $domain;
+            $mime_type = $matches[2][$idx][0];
+            $name      = $list[$hash];
+
+            if (empty($mime_type)) {
+                $mime_type = rcube_mime::image_content_type($data);
+            }
+
+            // add the image to the MIME message
+            if (!$name) {
+                $ext         = preg_replace('#^[^/]+/#', '', $mime_type);
+                $name        = substr($hash, 0, 8) . '.' . $ext;
+                $list[$hash] = $name;
+
+                $mime_message->addHTMLImage($data, $mime_type, $name, false, $hash);
+            }
+
+            $body = substr_replace($body, $name, $m[1] + $offset, strlen($m[0]));
+            $offset += strlen($name) - strlen($m[0]);
+        }
+    }
+
+    $mime_message->setHTMLBody($body);
+}
+
+/**
+ * Parse and cleanup email address input (and count addresses)
+ *
+ * @param string  Address input
+ * @param boolean Do count recipients (saved in global $RECIPIENT_COUNT)
+ * @param boolean Validate addresses (errors saved in global $EMAIL_FORMAT_ERROR)
+ * @return string Canonical recipients string separated by comma
+ */
+function rcmail_email_input_format($mailto, $count=false, $check=true)
+{
+    global $RCMAIL, $EMAIL_FORMAT_ERROR, $RECIPIENT_COUNT;
+
+    // simplified email regexp, supporting quoted local part
+    $email_regexp = '(\S+|("[^"]+"))@\S+';
+
+    $delim   = trim($RCMAIL->config->get('recipients_separator', ','));
+    $regexp  = array("/[,;$delim]\s*[\r\n]+/", '/[\r\n]+/', "/[,;$delim]\s*\$/m", '/;/', '/(\S{1})(<'.$email_regexp.'>)/U');
+    $replace = array($delim.' ', ', ', '', $delim, '\\1 \\2');
+
+    // replace new lines and strip ending ', ', make address input more valid
+    $mailto = trim(preg_replace($regexp, $replace, $mailto));
+    $items  = rcube_utils::explode_quoted_string($delim, $mailto);
+    $result = array();
+
+    foreach ($items as $item) {
+        $item = trim($item);
+        // address in brackets without name (do nothing)
+        if (preg_match('/^<'.$email_regexp.'>$/', $item)) {
+            $item     = rcube_utils::idn_to_ascii(trim($item, '<>'));
+            $result[] = $item;
+        }
+        // address without brackets and without name (add brackets)
+        else if (preg_match('/^'.$email_regexp.'$/', $item)) {
+            $item     = rcube_utils::idn_to_ascii($item);
+            $result[] = $item;
+        }
+        // address with name (handle name)
+        else if (preg_match('/<*'.$email_regexp.'>*$/', $item, $matches)) {
+            $address = $matches[0];
+            $name    = trim(str_replace($address, '', $item));
+            if ($name[0] == '"' && $name[count($name)-1] == '"') {
+                $name = substr($name, 1, -1);
+            }
+            $name     = stripcslashes($name);
+            $address  = rcube_utils::idn_to_ascii(trim($address, '<>'));
+            $result[] = format_email_recipient($address, $name);
+            $item     = $address;
+        }
+        else if (trim($item)) {
+            continue;
+        }
+
+        // check address format
+        $item = trim($item, '<>');
+        if ($item && $check && !rcube_utils::check_email($item)) {
+            $EMAIL_FORMAT_ERROR = $item;
+            return;
+        }
+    }
+
+    if ($count) {
+        $RECIPIENT_COUNT += count($result);
+    }
+
+    return implode(', ', $result);
+}
+
+
+function rcmail_generic_message_footer($isHtml)
+{
+    global $RCMAIL;
+
+    if ($isHtml && ($file = $RCMAIL->config->get('generic_message_footer_html'))) {
+        $html_footer = true;
+    }
+    else {
+        $file = $RCMAIL->config->get('generic_message_footer');
+        $html_footer = false;
+    }
+
+    if ($file && realpath($file)) {
+        // sanity check
+        if (!preg_match('/\.(php|ini|conf)$/', $file) && strpos($file, '/etc/') === false) {
+            $footer = file_get_contents($file);
+            if ($isHtml && !$html_footer) {
+                $t2h    = new rcube_text2html($footer, false);
+                $footer = $t2h->get_html();
+            }
+            return $footer;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * clear message composing settings
+ */
+function rcmail_compose_cleanup($id)
+{
+    if (!isset($_SESSION['compose_data_'.$id])) {
+        return;
+    }
+
+    $rcmail = rcmail::get_instance();
+    $rcmail->plugins->exec_hook('attachments_cleanup', array('group' => $id));
+    $rcmail->session->remove('compose_data_'.$id);
+
+    $_SESSION['last_compose_session'] = $id;
+}

--
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