includes/clientside/jsres.php
author Dan
Wed, 26 Mar 2008 02:56:23 -0400
changeset 509 175df10e0b56
parent 507 586fd7d3202d
child 536 218a627eb53e
permissions -rw-r--r--
Added a copy of Firebug Lite for debugging purposes. License is uncertain but being treated as MPL. (If is is not MPL then it is under something more permissive that permits relicensing anyway)
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<?php
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/*
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 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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 * Version 1.1.3 (Caoineag alpha 3)
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 * Copyright (C) 2006-2007 Dan Fuhry
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 * jsres.php - the Enano client-side runtime, a.k.a. AJAX on steroids
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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// Disable for IE, it causes problems.
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if ( strstr(@$_SERVER['HTTP_USER_AGENT'], 'MSIE') )
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{
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  header('HTTP/1.1 302 Redirect');
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  header('Location: static/enano-lib-basic.js');
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  exit();
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}
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// Setup Enano
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//
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// Determine the location of Enano as an absolute path.
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//
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// We need to see if this is a specially marked Enano development server. You can create an Enano
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// development server by cloning the Mercurial repository into a directory named repo, and then
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// using symlinks to reference the original files so as to segregate unique files from non-unique
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// and distribution-standard ones. Enano will pivot its root directory accordingly if the file
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// .enanodev is found in the Enano root (not /repo/).
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if ( strpos(__FILE__, '/repo/') && ( file_exists('../../.enanodev') || file_exists('../../../.enanodev') ) )
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{
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  // We have a development directory. Remove /repo/ from the picture.
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  $filename = str_replace('/repo/', '/', __FILE__);
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}
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else
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{
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  // Standard Enano installation
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  $filename = __FILE__;
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}
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// ENANO_ROOT is sometimes defined by plugins like AjIM that need the constant before the Enano API is initialized
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if ( !defined('ENANO_ROOT') )
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  define('ENANO_ROOT', dirname(dirname(dirname($filename))));
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chdir(ENANO_ROOT);
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// CONFIG
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// Files safe to run full (aggressive) compression on
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$full_compress_safe = array(
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  // Sorted by file size, descending (du -b *.js | sort -n)
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  'libbigint.js',
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  'ajax.js',
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  'editor.js',
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  'acl.js',
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  'misc.js',
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  'comments.js',
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  'rijndael.js',
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  'autofill.js',
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  'dropdown.js',
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  'paginate.js',
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  'autocomplete.js',
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  'md5.js',
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  'pwstrength.js',
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  'sha256.js',
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  'flyin.js',
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  'template-compiler.js',
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  'toolbar.js',
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  'diffiehellman.js',
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  'enanomath.js'
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);
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// Files that should NOT be compressed due to already being compressed, licensing, or invalid produced code
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$compress_unsafe = array('SpryEffects.js', 'json.js', 'fat.js', 'admin-menu.js');
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require('includes/functions.php');
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require('includes/json2.php');
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require('includes/js-compressor.php');
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// Output format will always be JS
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header('Content-type: text/javascript');
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$everything = '';
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// Load and parse enano_lib_basic
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$file = @file_get_contents('includes/clientside/static/enano-lib-basic.js');
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$pos_start_includes = strpos($file, '/*!START_INCLUDER*/');
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$pos_end_includes = strpos($file, '/*!END_INCLUDER*/');
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if ( !$pos_start_includes || !$pos_end_includes )
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{
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  die('// Error: enano-lib-basic does not have required metacomments');
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}
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$pos_end_includes += strlen('/*!END_INCLUDER*/');
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preg_match('/var thefiles = (\[([^\]]+?)\]);/', $file, $match);
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if ( empty($match) )
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  die('// Error: could not retrieve file list from enano-lib-basic');
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// Decode file list
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try
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{
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  $file_list = enano_json_decode($match[1]);
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}
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catch ( Exception $e )
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{
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  die("// Exception caught during file list parsing");
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}
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$apex = filemtime('includes/clientside/static/enano-lib-basic.js');
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$before_includes = substr($file, 0, $pos_start_includes);
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$after_includes = substr($file, $pos_end_includes);
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$everything .= $before_includes;
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$everything .= $after_includes;
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foreach ( $file_list as $js_file )
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{
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  $file_contents = file_get_contents("includes/clientside/static/$js_file");
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  $file_md5 = md5($file_contents);
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  $time = filemtime("includes/clientside/static/$js_file");
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  if ( $time > $apex )
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    $apex = $time;
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  // Is this file cached?
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  $cache_path = ENANO_ROOT . "/cache/jsres_$js_file.json";
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  $loaded_cache = false;
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  if ( file_exists($cache_path) )
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  {
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    // Load the cache file and parse it.
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    $cache_file = file_get_contents($cache_path);
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    try
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    {
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      $cache_file = enano_json_decode($cache_file);
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    }
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    catch ( Exception $e )
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    {
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      // Don't do anything - let our fallbacks come into place
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    }
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    if ( is_array($cache_file) && isset($cache_file['md5']) && isset($cache_file['src']) )
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    {
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      if ( $cache_file['md5'] === $file_md5 )
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      {
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        $loaded_cache = true;
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        $file_contents = $cache_file['src'];
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      }
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    }
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  }
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  if ( !$loaded_cache )
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  {
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    // Try to open the cache file and write to it. If we can't do that, just don't compress the code.
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    $handle = @fopen($cache_path, 'w');
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    if ( $handle )
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    {
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      $aggressive = in_array($js_file, $full_compress_safe);
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      if ( !in_array($js_file, $compress_unsafe) )
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        $file_contents = perform_js_compress($file_contents, $aggressive);
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      $payload = enano_json_encode(array(
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          'md5' => $file_md5,
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          'src' => $file_contents
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        ));
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      fwrite($handle, $payload);
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      fclose($handle);
1
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    }
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  }
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  $everything .= "\n // $js_file\n";
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  $everything .= "\n" . $file_contents;
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}
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$date = date('r', $apex);
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header("Date: $date");
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header("Last-Modified: $date");
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echo $everything;
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