<?php

/*

 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between

 * Copyright (C) 2006-2008 Dan Fuhry

 * tiny_mce_gzip.php - TinyMCE gzip and caching script, stock from MoxieCode with one modification

 *

 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied

 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.

 */

/**

 * $Id: tiny_mce_gzip.php 315 2007-10-25 14:03:43Z spocke $

 *

 * @author Moxiecode

 * @copyright Copyright © 2005-2006, Moxiecode Systems AB, All rights reserved.

 *

 * This file compresses the TinyMCE JavaScript using GZip and

 * enables the browser to do two requests instead of one for each .js file.

 * Notice: This script defaults the button_tile_map option to true for extra performance.

 */

	// Set the error reporting to minimal.

	@error_reporting(E_ERROR | E_WARNING | E_PARSE);

  // 5/5/2008 - load Enano, but only get the root directory

  define('ENANO_COMMON_ROOTONLY', 1);

  require('../../common.php');

	// Get input

	$plugins = explode(',', getParam("plugins", ""));

	$languages = explode(',', getParam("languages", ""));

	$themes = explode(',', getParam("themes", ""));

	$diskCache = getParam("diskcache", "") == "true";

	$isJS = getParam("js", "") == "true";

	$compress = getParam("compress", "true") == "true";

	$core = getParam("core", "true") == "true";

	$suffix = getParam("suffix", "_src") == "_src" ? "_src" : "";

  // 5/5/2008 - set cache path to Enano's usual directory

	$cachePath = realpath(ENANO_ROOT . "/cache"); // Cache path, this is where the .gz files will be stored

	$expiresOffset = 3600 * 24 * 10; // Cache for 10 days in browser cache

	$content = "";

	$encodings = array();

	$supportsGzip = false;

	$enc = "";

	$cacheKey = "";

	// Custom extra javascripts to pack

	$custom = array(/*

		"some custom .js file",

		"some custom .js file"

	*/);

	// Headers

	header("Content-type: text/javascript");

	header("Vary: Accept-Encoding");  // Handle proxies

	header("Expires: " . gmdate("D, d M Y H:i:s", time() + $expiresOffset) . " GMT");

	// Is called directly then auto init with default settings

	if (!$isJS) {

		echo getFileContents("tiny_mce_gzip.js");

		echo "tinyMCE_GZ.init({});";

		die();

	}

	// Setup cache info

	if ($diskCache) {

		if (!$cachePath)

			die("alert('Real path failed.');");

		$cacheKey = getParam("plugins", "") . getParam("languages", "") . getParam("themes", "") . $suffix;

		foreach ($custom as $file)

			$cacheKey .= $file;

		$cacheKey = md5($cacheKey);

		if ($compress)

			$cacheFile = $cachePath . "/tiny_mce_" . $cacheKey . ".gz";

		else

			$cacheFile = $cachePath . "/tiny_mce_" . $cacheKey . ".js";

	}

	// Check if it supports gzip

	if (isset($_SERVER['HTTP_ACCEPT_ENCODING']))

		$encodings = explode(',', strtolower(preg_replace("/\s+/", "", $_SERVER['HTTP_ACCEPT_ENCODING'])));

	if ((in_array('gzip', $encodings) || in_array('x-gzip', $encodings) || isset($_SERVER['---------------'])) && function_exists('ob_gzhandler') && !ini_get('zlib.output_compression')) {

		$enc = in_array('x-gzip', $encodings) ? "x-gzip" : "gzip";

		$supportsGzip = true;

	}

  // Send an ETag (Enano modification 5/5/2008)

  if ( isset($cacheKey) )

  {

    $etag =& $cacheKey;

    header("ETag: \"$etag\"");

    if ( isset($_SERVER['HTTP_IF_NONE_MATCH']) )

    {

      if ( "\"$etag\"" == $_SERVER['HTTP_IF_NONE_MATCH'] )

      {

        header('HTTP/1.1 304 Not Modified');

        exit();

      }

    }

  }

	// Use cached file disk cache

	if ($diskCache && $supportsGzip && file_exists($cacheFile)) {

		if ($compress)

			header("Content-Encoding: " . $enc);

		echo getFileContents($cacheFile);

		die();

	}

	// Add core

	if ($core == "true") {

		$content .= getFileContents("tiny_mce" . $suffix . ".js");

		// Patch loading functions

		$content .= "tinyMCE_GZ.start();";

	}

	// Add core languages

	foreach ($languages as $lang)

		$content .= getFileContents("langs/" . $lang . ".js");

	// Add themes

	foreach ($themes as $theme) {

		$content .= getFileContents( "themes/" . $theme . "/editor_template" . $suffix . ".js");

		foreach ($languages as $lang)

			$content .= getFileContents("themes/" . $theme . "/langs/" . $lang . ".js");

	}

	// Add plugins

	foreach ($plugins as $plugin) {

		$content .= getFileContents("plugins/" . $plugin . "/editor_plugin" . $suffix . ".js");

		foreach ($languages as $lang)

			$content .= getFileContents("plugins/" . $plugin . "/langs/" . $lang . ".js");

	}

	// Add custom files

	foreach ($custom as $file)

		$content .= getFileContents($file);

	// Restore loading functions

	if ($core == "true")

		$content .= "tinyMCE_GZ.end();";

	// Generate GZIP'd content

	if ($supportsGzip) {

		if ($compress) {

			header("Content-Encoding: " . $enc);

			$cacheData = gzencode($content, 9, FORCE_GZIP);

		} else

			$cacheData = $content;

		// Write gz file

		if ($diskCache && $cacheKey != "")

			putFileContents($cacheFile, $cacheData);

		// Stream to client

		echo $cacheData;

	} else {

		// Stream uncompressed content

		echo $content;

	}

	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

	function getParam($name, $def = false) {

		if (!isset($_GET[$name]))

			return $def;

		return preg_replace("/[^0-9a-z\-_,]+/i", "", $_GET[$name]); // Remove anything but 0-9,a-z,-_

	}

	function getFileContents($path) {

		$path = realpath($path);

		if (!$path || !@is_file($path))

			return "";

		if (function_exists("file_get_contents"))

			return @file_get_contents($path);

		$content = "";

		$fp = @fopen($path, "r");

		if (!$fp)

			return "";

		while (!feof($fp))

			$content .= fgets($fp);

		fclose($fp);

		return $content;

	}

	function putFileContents($path, $content) {

		if (function_exists("file_put_contents"))

			return @file_put_contents($path, $content);

		$fp = @fopen($path, "wb");

		if ($fp) {

			fwrite($fp, $content);

			fclose($fp);

		}

	}

?>