--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/include/rcmail_output_json.php	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,260 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | program/include/rcmail_output_json.php                                |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2008-2012, 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:                                                              |
+ |   Class to handle JSON (AJAX) output                                  |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ | Author: Aleksander Machniak <alec@alec.pl>                            |
+ +-----------------------------------------------------------------------+
+*/
+
+/**
+ * View class to produce JSON responses
+ *
+ * @package    Webmail
+ * @subpackage View
+ */
+class rcmail_output_json extends rcmail_output
+{
+    protected $texts     = array();
+    protected $commands  = array();
+    protected $callbacks = array();
+    protected $message   = null;
+
+    public $type      = 'js';
+    public $ajax_call = true;
+
+
+    /**
+     * Issue command to set page title
+     *
+     * @param string $title New page title
+     */
+    public function set_pagetitle($title)
+    {
+        if ($this->config->get('devel_mode') && !empty($_SESSION['username'])) {
+            $name = $_SESSION['username'];
+        }
+        else {
+            $name = $this->config->get('product_name');
+        }
+
+        $this->command('set_pagetitle', empty($name) ? $title : $name . ' :: ' . $title);
+    }
+
+    /**
+     * Register a template object handler
+     *
+     * @param string $obj  Object name
+     * @param string $func Function name to call
+     */
+    public function add_handler($obj, $func)
+    {
+        // ignore
+    }
+
+    /**
+     * Register a list of template object handlers
+     *
+     * @param array $arr Hash array with object=>handler pairs
+     */
+    public function add_handlers($arr)
+    {
+        // ignore
+    }
+
+    /**
+     * Call a client method
+     *
+     * @param string Method to call
+     * @param ... Additional arguments
+     */
+    public function command()
+    {
+        $cmd = func_get_args();
+
+        if (strpos($cmd[0], 'plugin.') === 0) {
+            $this->callbacks[] = $cmd;
+        }
+        else {
+            $this->commands[] = $cmd;
+        }
+    }
+
+    /**
+     * Add a localized label to the client environment
+     */
+    public function add_label()
+    {
+        $args = func_get_args();
+        if (count($args) == 1 && is_array($args[0])) {
+            $args = $args[0];
+        }
+
+        foreach ($args as $name) {
+            $this->texts[$name] = $this->app->gettext($name);
+        }
+    }
+
+    /**
+     * Invoke display_message command
+     *
+     * @param string  $message  Message to display
+     * @param string  $type     Message type [notice|confirm|error]
+     * @param array   $vars     Key-value pairs to be replaced in localized text
+     * @param boolean $override Override last set message
+     * @param int     $timeout  Message displaying time in seconds
+     *
+     * @uses self::command()
+     */
+    public function show_message($message, $type='notice', $vars=null, $override=true, $timeout=0)
+    {
+        if ($override || !$this->message) {
+            if ($this->app->text_exists($message)) {
+                if (!empty($vars)) {
+                    $vars = array_map(array('rcmail', 'Q'), $vars);
+                }
+                $msgtext = $this->app->gettext(array('name' => $message, 'vars' => $vars));
+            }
+            else
+                $msgtext = $message;
+
+            $this->message = $message;
+            $this->command('display_message', $msgtext, $type, $timeout * 1000);
+        }
+    }
+
+    /**
+     * Delete all stored env variables and commands
+     */
+    public function reset()
+    {
+        parent::reset();
+        $this->texts    = array();
+        $this->commands = array();
+    }
+
+    /**
+     * Redirect to a certain url
+     *
+     * @param mixed $p     Either a string with the action or url parameters as key-value pairs
+     * @param int   $delay Delay in seconds
+     *
+     * @see rcmail::url()
+     */
+    public function redirect($p = array(), $delay = 1)
+    {
+        $location = $this->app->url($p);
+        $this->remote_response(sprintf("window.setTimeout(function(){ %s.redirect('%s',true); }, %d);",
+            self::JS_OBJECT_NAME, $location, $delay));
+        exit;
+    }
+
+    /**
+     * Send an AJAX response to the client.
+     */
+    public function send()
+    {
+        $this->remote_response();
+        exit;
+    }
+
+    /**
+     * Show error page and terminate script execution
+     *
+     * @param int    $code    Error code
+     * @param string $message Error message
+     */
+    public function raise_error($code, $message)
+    {
+        if ($code == 403) {
+            header('HTTP/1.1 403 Forbidden');
+            die("Invalid Request");
+        }
+
+        $this->show_message("Application Error ($code): $message", 'error');
+        $this->remote_response();
+        exit;
+    }
+
+    /**
+     * Send an AJAX response with executable JS code
+     *
+     * @param string $add Additional JS code
+     */
+    protected function remote_response($add = '')
+    {
+        static $s_header_sent = false;
+
+        if (!$s_header_sent) {
+            $s_header_sent = true;
+            $this->nocacheing_headers();
+            header('Content-Type: text/plain; charset=' . $this->get_charset());
+        }
+
+        // unset default env vars
+        unset($this->env['task'], $this->env['action'], $this->env['comm_path']);
+
+        $rcmail = rcmail::get_instance();
+        $response['action'] = $rcmail->action;
+
+        if ($unlock = rcube_utils::get_input_value('_unlock', rcube_utils::INPUT_GPC)) {
+            $response['unlock'] = $unlock;
+        }
+
+        if (!empty($this->env))
+            $response['env'] = $this->env;
+
+        if (!empty($this->texts))
+            $response['texts'] = $this->texts;
+
+        // send function calls
+        $response['exec'] = $this->get_js_commands() . $add;
+
+        if (!empty($this->callbacks))
+            $response['callbacks'] = $this->callbacks;
+
+        // trigger generic hook where plugins can put additional content to the response
+        $hook = $this->app->plugins->exec_hook("render_response", array('response' => $response));
+
+        // save some memory
+        $response = $hook['response'];
+        unset($hook['response']);
+
+        echo self::json_serialize($response, $this->devel_mode);
+    }
+
+    /**
+     * Return executable javascript code for all registered commands
+     */
+    protected function get_js_commands()
+    {
+        $out = '';
+
+        foreach ($this->commands as $i => $args) {
+            $method = array_shift($args);
+            foreach ($args as $i => $arg) {
+                $args[$i] = self::json_serialize($arg, $this->devel_mode);
+            }
+
+            $out .= sprintf(
+                "this.%s(%s);\n",
+                preg_replace('/^parent\./', '', $method),
+                implode(',', $args)
+            );
+        }
+
+        return $out;
+    }
+}