--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/lib/Roundcube/rcube_output.php	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,286 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | This file is part of the Roundcube PHP suite                          |
+ | 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.                     |
+ |                                                                       |
+ | CONTENTS:                                                             |
+ |   Abstract class for output generation                                |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ | Author: Aleksander Machniak <alec@alec.pl>                            |
+ +-----------------------------------------------------------------------+
+*/
+
+/**
+ * Class for output generation
+ *
+ * @package    Framework
+ * @subpackage View
+ */
+abstract class rcube_output
+{
+    public $browser;
+
+    protected $app;
+    protected $config;
+    protected $charset = RCUBE_CHARSET;
+    protected $env = array();
+    protected $skins = array();
+
+
+    /**
+     * Object constructor
+     */
+    public function __construct()
+    {
+        $this->app     = rcube::get_instance();
+        $this->config  = $this->app->config;
+        $this->browser = new rcube_browser();
+    }
+
+    /**
+     * Magic getter
+     */
+    public function __get($var)
+    {
+        // allow read-only access to some members
+        switch ($var) {
+            case 'env':     return $this->env;
+            case 'skins':   return $this->skins;
+            case 'charset': return $this->charset;
+        }
+
+        return null;
+    }
+
+    /**
+     * Setter for output charset.
+     * To be specified in a meta tag and sent as http-header
+     *
+     * @param string $charset Charset name
+     */
+    public function set_charset($charset)
+    {
+        $this->charset = $charset;
+    }
+
+    /**
+     * Getter for output charset
+     *
+     * @return string Output charset name
+     */
+    public function get_charset()
+    {
+        return $this->charset;
+    }
+
+    /**
+     * Set environment variable
+     *
+     * @param string $name   Property name
+     * @param mixed  $value  Property value
+     */
+    public function set_env($name, $value)
+    {
+        $this->env[$name] = $value;
+    }
+
+    /**
+     * Environment variable getter.
+     *
+     * @param string $name  Property name
+     *
+     * @return mixed Property value
+     */
+    public function get_env($name)
+    {
+        return $this->env[$name];
+    }
+
+    /**
+     * Delete all stored env variables and commands
+     */
+    public function reset()
+    {
+        $this->env = array();
+    }
+
+    /**
+     * 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     $timeout  Message displaying time in seconds
+     */
+    abstract function show_message($message, $type = 'notice', $vars = null, $override = true, $timeout = 0);
+
+    /**
+     * Redirect to a certain url.
+     *
+     * @param mixed $p     Either a string with the action or url parameters as key-value pairs
+     * @param int   $delay Delay in seconds
+     */
+    abstract function redirect($p = array(), $delay = 1);
+
+    /**
+     * Send output to the client.
+     */
+    abstract function send();
+
+    /**
+     * Send HTTP headers to prevent caching a page
+     */
+    public function nocacheing_headers()
+    {
+        if (headers_sent()) {
+            return;
+        }
+
+        header("Expires: ".gmdate("D, d M Y H:i:s")." GMT");
+        header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
+
+        // We need to set the following headers to make downloads work using IE in HTTPS mode.
+        if ($this->browser->ie && rcube_utils::https_check()) {
+            header('Pragma: private');
+            header("Cache-Control: private, must-revalidate");
+        }
+        else {
+            header("Cache-Control: private, no-cache, no-store, must-revalidate, post-check=0, pre-check=0");
+            header("Pragma: no-cache");
+        }
+    }
+
+    /**
+     * Send header with expire date 30 days in future
+     *
+     * @param int Expiration time in seconds
+     */
+    public function future_expire_header($offset = 2600000)
+    {
+        if (headers_sent()) {
+            return;
+        }
+
+        header("Expires: " . gmdate("D, d M Y H:i:s", time()+$offset) . " GMT");
+        header("Cache-Control: max-age=$offset");
+        header("Pragma: ");
+    }
+
+    /**
+     * Send browser compatibility/security/etc. headers
+     */
+    public function common_headers()
+    {
+        if (headers_sent()) {
+            return;
+        }
+
+        // Unlock IE compatibility mode
+        if ($this->browser->ie) {
+            header('X-UA-Compatible: IE=edge');
+        }
+
+        // Request browser to disable DNS prefetching (CVE-2010-0464)
+        header("X-DNS-Prefetch-Control: off");
+
+        // send CSRF and clickjacking protection headers
+        if ($xframe = $this->app->config->get('x_frame_options', 'sameorigin')) {
+            header('X-Frame-Options: ' . $xframe);
+        }
+    }
+
+    /**
+     * Show error page and terminate script execution
+     *
+     * @param int    $code     Error code
+     * @param string $message  Error message
+     */
+    public function raise_error($code, $message)
+    {
+        // STUB: to be overloaded by specific output classes
+        fputs(STDERR, "Error $code: $message\n");
+        exit(-1);
+    }
+
+    /**
+     * Create an edit field for inclusion on a form
+     *
+     * @param string $col    Field name
+     * @param string $value  Field value
+     * @param array  $attrib HTML element attributes for the field
+     * @param string $type   HTML element type (default 'text')
+     *
+     * @return string HTML field definition
+     */
+    public static function get_edit_field($col, $value, $attrib, $type = 'text')
+    {
+        static $colcounts = array();
+
+        $fname = '_'.$col;
+        $attrib['name']  = $fname . ($attrib['array'] ? '[]' : '');
+        $attrib['class'] = trim($attrib['class'] . ' ff_' . $col);
+
+        if ($type == 'checkbox') {
+            $attrib['value'] = '1';
+            $input = new html_checkbox($attrib);
+        }
+        else if ($type == 'textarea') {
+            $attrib['cols'] = $attrib['size'];
+            $input = new html_textarea($attrib);
+        }
+        else if ($type == 'select') {
+            $input = new html_select($attrib);
+            $input->add('---', '');
+            $input->add(array_values($attrib['options']), array_keys($attrib['options']));
+        }
+        else if ($type == 'password' || $attrib['type'] == 'password') {
+            $input = new html_passwordfield($attrib);
+        }
+        else {
+            if ($attrib['type'] != 'text' && $attrib['type'] != 'hidden') {
+                $attrib['type'] = 'text';
+            }
+            $input = new html_inputfield($attrib);
+        }
+
+        // use value from post
+        if (isset($_POST[$fname])) {
+            $postvalue = rcube_utils::get_input_value($fname, rcube_utils::INPUT_POST, true);
+            $value = $attrib['array'] ? $postvalue[intval($colcounts[$col]++)] : $postvalue;
+        }
+
+        $out = $input->show($value);
+
+        return $out;
+    }
+
+    /**
+     * Convert a variable into a javascript object notation
+     *
+     * @param mixed   $input  Input value
+     * @param boolean $pretty Enable JSON formatting
+     *
+     * @return string Serialized JSON string
+     */
+    public static function json_serialize($input, $pretty = false)
+    {
+        $input   = rcube_charset::clean($input);
+        $options = 0;
+
+        if ($pretty) {
+            $options |= JSON_PRETTY_PRINT;
+        }
+
+        // sometimes even using rcube_charset::clean() the input contains invalid UTF-8 sequences
+        // that's why we have @ here
+        return @json_encode($input, $options);
+    }
+}