--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/steps/mail/check_recent.inc	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,157 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | program/steps/mail/check_recent.inc                                   |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2005-2014, 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:                                                              |
+ |   Check for recent messages, in all mailboxes                         |
+ |                                                                       |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ +-----------------------------------------------------------------------+
+*/
+
+// If there's no folder or messages list, there's nothing to update
+// This can happen on 'refresh' request
+if (empty($_POST['_folderlist']) && empty($_POST['_list'])) {
+    return;
+}
+
+$trash     = $RCMAIL->config->get('trash_mbox');
+$current   = $RCMAIL->storage->get_folder();
+$check_all = $RCMAIL->action != 'refresh' || (bool)$RCMAIL->config->get('check_all_folders');
+$page      = $RCMAIL->storage->get_page();
+$page_size = $RCMAIL->storage->get_pagesize();
+
+$search_request = rcube_utils::get_input_value('_search', rcube_utils::INPUT_GPC);
+if ($search_request && $_SESSION['search_request'] != $search_request) {
+    $search_request = null;
+}
+
+// list of folders to check
+if ($check_all) {
+    $a_mailboxes = $RCMAIL->storage->list_folders_subscribed('', '*', 'mail');
+}
+else if ($search_request && is_object($_SESSION['search'][1])) {
+    $a_mailboxes = (array) $_SESSION['search'][1]->get_parameters('MAILBOX');
+}
+else {
+    $a_mailboxes = (array) $current;
+    if ($current != 'INBOX') {
+        $a_mailboxes[] = 'INBOX';
+    }
+}
+
+// Control folders list from a plugin
+$plugin      = $RCMAIL->plugins->exec_hook('check_recent', array('folders' => $a_mailboxes, 'all' => $check_all));
+$a_mailboxes = $plugin['folders'];
+
+// check recent/unseen counts
+foreach ($a_mailboxes as $mbox_name) {
+    $is_current = $mbox_name == $current || ($search_request && is_object($_SESSION['search'][1]) && in_array($mbox_name, (array)$_SESSION['search'][1]->get_parameters('MAILBOX')));
+    if ($is_current) {
+        // Synchronize mailbox cache, handle flag changes
+        $RCMAIL->storage->folder_sync($mbox_name);
+    }
+
+    // Get mailbox status
+    $status = $RCMAIL->storage->folder_status($mbox_name, $diff);
+
+    if ($status & 1) {
+        // trigger plugin hook
+        $RCMAIL->plugins->exec_hook('new_messages',
+            array('mailbox' => $mbox_name, 'is_current' => $is_current, 'diff' => $diff));
+    }
+
+    rcmail_send_unread_count($mbox_name, true, null,
+      (!$is_current && ($status & 1)) ? 'recent' : '');
+
+    if ($status && $is_current) {
+        // refresh saved search set
+        if ($search_request && isset($_SESSION['search'])) {
+            unset($search_request);  // only do this once
+            $_SESSION['search'] = $RCMAIL->storage->refresh_search();
+            if ($_SESSION['search'][1]->multi) {
+                $mbox_name = '';
+            }
+        }
+
+        if (!empty($_POST['_quota'])) {
+            $OUTPUT->command('set_quota', $RCMAIL->quota_content(null, $mbox_name));
+        }
+
+        $OUTPUT->set_env('exists', $RCMAIL->storage->count($mbox_name, 'EXISTS', true));
+
+        // "No-list" mode, don't get messages
+        if (empty($_POST['_list'])) {
+            continue;
+        }
+
+        // get overall message count; allow caching because rcube_storage::folder_status()
+        // did a refresh but only in list mode
+        $list_mode = $RCMAIL->storage->get_threading() ? 'THREADS' : 'ALL';
+        $all_count = $RCMAIL->storage->count($mbox_name, $list_mode, $list_mode == 'THREADS', false);
+
+        // check current page if we're not on the first page
+        if ($all_count && $page > 1) {
+            $remaining = $all_count - $page_size * ($page - 1);
+            if ($remaining <= 0) {
+                $page -= 1;
+                $RCMAIL->storage->set_page($page);
+                $_SESSION['page'] = $page;
+            }
+        }
+
+        $OUTPUT->set_env('messagecount', $all_count);
+        $OUTPUT->set_env('pagecount', ceil($all_count/$page_size));
+        $OUTPUT->command('set_rowcount', rcmail_get_messagecount_text($all_count), $mbox_name);
+        $OUTPUT->set_env('current_page', $all_count ? $page : 1);
+
+        // remove old rows (and clear selection if new list is empty)
+        $OUTPUT->command('message_list.clear', $all_count ? false : true);
+
+        if ($all_count) {
+            $a_headers = $RCMAIL->storage->list_messages($mbox_name, null, rcmail_sort_column(), rcmail_sort_order());
+            // add message rows
+            rcmail_js_message_list($a_headers, false);
+            // remove messages that don't exists from list selection array
+            $OUTPUT->command('update_selection');
+        }
+    }
+    // handle flag updates
+    else if ($is_current && ($uids = rcube_utils::get_input_value('_uids', rcube_utils::INPUT_GPC)) && empty($search_request)) {
+        $data = $RCMAIL->storage->folder_data($mbox_name);
+
+        if (empty($_SESSION['list_mod_seq']) || $_SESSION['list_mod_seq'] != $data['HIGHESTMODSEQ']) {
+            $flags = $RCMAIL->storage->list_flags($mbox_name, explode(',', $uids), $_SESSION['list_mod_seq']);
+            foreach ($flags as $idx => $row) {
+                $flags[$idx] = array_change_key_case(array_map('intval', $row));
+            }
+
+            // remember last HIGHESTMODSEQ value (if supported)
+            if (!empty($data['HIGHESTMODSEQ'])) {
+                $_SESSION['list_mod_seq'] = $data['HIGHESTMODSEQ'];
+            }
+
+            $RCMAIL->output->set_env('recent_flags', $flags);
+        }
+    }
+
+    // set trash folder state
+    if ($mbox_name === $trash) {
+        $OUTPUT->command('set_trash_count', $RCMAIL->storage->count($mbox_name, 'EXISTS', true));
+    }
+}
+
+// trigger refresh hook
+$RCMAIL->plugins->exec_hook('refresh', array());
+
+$OUTPUT->send();