<?php
if(!defined('ABSPATH')) die();

class Debug_This_Extensions{
	public function __construct(){
		$version = get_bloginfo('version');
		add_debug_extension('actions', __('Actions', 'debug-this'), __('$wp_actions contains all active registered actions', 'debug-this'), array($this, 'actions'), 'Filters And Actions');
		add_debug_extension('apache', __('Apache Information', 'debug-this'), __('Apache version and list of modules', 'debug-this'), array($this, 'apache'), 'Server');
		add_debug_extension('attachments', __('Attachments', 'debug-this'), __('List of post attachments', 'debug-this'), array($this, 'attachments'), 'Media');
		add_debug_extension('author', __('Post Author', 'debug-this'), __('Current author data', 'debug-this'), array($this, 'author'), 'Users');
		add_debug_extension('backtrace', __('Backtrace', 'debug-this'), __('PHP Backtrace', 'debug-this'), array($this, 'backtrace'), 'PHP');
		add_debug_extension('bloginfo', __('Blog Info', 'debug-this'), __('Key/Values for get_bloginfo() or bloginfo()', 'debug-this'), array($this, 'bloginfo'));
		add_debug_extension('classes', __('Classes', 'debug-this'), __('Declared Classes', 'debug-this'), array($this, 'classes'), 'PHP');
		add_debug_extension('cache', __('Object Cache', 'debug-this'), __('Object Cache stats', 'debug-this'), array($this, 'cache'), 'Cache');
		add_debug_extension('constants', __('Constants', 'debug-this'), __('Defined Constants', 'debug-this'), array($this, 'constants'), 'PHP');
		add_debug_extension('constants-wp', __('Constants (WordPress)', 'debug-this'), __('Defined WordPress Constants', 'debug-this'), array($this, 'constants_wordpress'), 'PHP');
		add_debug_extension('content-width', __('Content Width', 'debug-this'), __('global $content_width', 'debug-this'), array($this, 'content_width'), 'Themes');
		add_debug_extension('context', __('Context', 'debug-this'), __('Conditional Context Tags', 'debug-this'), array($this, 'context'), 'Query');
		add_debug_extension('cron-schedules', __('WP Cron Schedules', 'debug-this'), __('WP Cron Schedules', 'debug-this'), array($this, 'cron_schedules'), 'Cron');
		add_debug_extension('cron-jobs', __('WP Cron Jobs', 'debug-this'), __('WP Cron Jobs', 'debug-this'), array($this, 'cron_jobs'), 'Cron');
		add_debug_extension('css', __('CSS', 'debug-this'), __('Rendered CSS', 'debug-this'), array($this, 'css'), 'Rendered HTML');
		add_debug_extension('dropins', __('Dropins', 'debug-this'), __('List of all dropins that replace core WP functionality', 'debug-this'), array($this, 'dropins'), 'Plugins');
		add_debug_extension('php-extensions', __('Extensions', 'debug-this'), __('List of all loaded PHP extensions', 'debug-this'), array($this, 'extensions'), 'PHP');
		add_debug_extension('file-permissions', __('File Permissions', 'debug-this'), __('Info about WP root, plugins and theme directories.', 'debug-this'), array($this, 'file_permissions'), 'Server');
		add_debug_extension('files', __('Files', 'debug-this'), __('All required and included files', 'debug-this'), array($this, 'files'), 'PHP');
		add_debug_extension('filters', __('Filters', 'debug-this'), __('$wp_filter contains all registered filters. Callback functions are contained in parentheses', 'debug-this'), array($this, 'filters'), 'Filters And Actions');
		add_debug_extension('filters-current', __('Current', 'debug-this'), __('Current Filters and Actions', 'debug-this'), array($this, 'filters_current'), 'Filters And Actions');
		add_debug_extension('functions', __('Functions', 'debug-this'), __('All defined user functions', 'debug-this'), array($this, 'functions'), 'PHP');
		add_debug_extension('images', __('Images', 'debug-this'), __('Rendered images on the current page/post', 'debug-this'), array($this, 'images'), 'Rendered HTML');
		add_debug_extension('imagesizes', __('Image Sizes', 'debug-this'), __('All registered image sizes. Uses get_intermediate_image_sizes() & global $_wp_additional_image_sizes', 'debug-this'), array($this, 'imagesizes'), 'Media');
		add_debug_extension('js', __('JavaScript', 'debug-this'), __('Rendered JS', 'debug-this'), array($this, 'js'), 'Rendered HTML');
		add_debug_extension('load-time', __('Load Time', 'debug-this'), __('True page load time (sans Debug This)', 'debug-this'), array($this, 'load_time'), 'Rendered HTML');
		add_debug_extension('menus', __('Registered Menus', 'debug-this'), __('All registered menus', 'debug-this'), array($this, 'menus'), 'Menus');
		add_debug_extension('menus_dynamic', __('Dynamic Menus', 'debug-this'), __('Dynamic Menus and Locations', 'debug-this'), array($this, 'menus_dynamic'), 'Menus');
		add_debug_extension('oembed', __('oEmbed', 'debug-this'), __('Registered oEmbed providers', 'debug-this'), array($this, 'oembed'), 'Media');
		add_debug_extension('options', __('Options', 'debug-this'), __('A list of all autoloaded options', 'debug-this'), array($this, 'options'));
		add_debug_extension('phpinfo', __('phpinfo()', 'debug-this'), __('phpinfo()', 'debug-this'), array($this, 'phpinfo'), 'PHP');
		add_debug_extension('phpini', __('php.ini', 'debug-this'), __('php.ini configuration', 'debug-this'), array($this, 'phpini'), 'PHP');
		add_debug_extension('plugins', __('Plugins', 'debug-this'), __('A list of all plugins', 'debug-this'), array($this, 'plugins'), 'Plugins');
		add_debug_extension('post', __('Post', 'debug-this'), __('Single post object', 'debug-this'), array($this, 'post'), 'Queried Object');
		add_debug_extension('post-meta', __('Post Meta', 'debug-this'), __('Post meta for the queried object.', 'debug-this'), array($this, 'post_meta'), 'Queried Object');
		add_debug_extension('posts', __('Post Objects', 'debug-this'), __('Archive post objects', 'debug-this'), array($this, 'posts'), 'Query');
		add_debug_extension('post-types', __('All Post Types', 'debug-this'), __('Lists all registered post types in WordPress', 'debug-this'), array($this, 'posttypes'), 'Post Types');
		add_debug_extension('post-type-current', __('Current Post Type', 'debug-this'), __('Post type for the queried object', 'debug-this'), array($this, 'posttype_current'), 'Post Types');
		add_debug_extension('queries', __('Saved Queries', 'debug-this'), __('All queries run on the current page load (sans Debug This)', 'debug-this'), array($this, 'queries'), 'Query');
		add_debug_extension('request', __('Request', 'debug-this'), __('Current request', 'debug-this'), array($this, 'request'), 'Query');
		add_debug_extension('rewrites', __('Rewrites', 'debug-this'), __('A list of all cached rewrites. To refresh the cache, visit Settings->Permalinks', 'debug-this'), array($this, 'rewrites'), 'Query');
		add_debug_extension('scripts', __('Scripts', 'debug-this'), __('List of registered scripts. Uses $wp_scripts', 'debug-this'), array($this, 'scripts'), 'Enqueue');
		add_debug_extension('server', __('$_SERVER', 'debug-this'), __('$_SERVER information', 'debug-this'), array($this, 'server'), 'Server');
		add_debug_extension('shortcodes', __('Shortcodes', 'debug-this'), __('List of all registered shortcodes', 'debug-this'), array($this, 'shortcodes'), 'Shortcodes');
		add_debug_extension('shortcodes-regex', __('Shortcodes Regex', 'debug-this'), __('Dynamically generated shortcode regex - get_shortcode_regex()', 'debug-this'), array($this, 'shortcodes_regex'), 'Shortcodes');
		add_debug_extension('sidebars-current', __('Current Sidebars', 'debug-this'), __('All instances of get_sidebar() and dynamic_sidebar() in the current template', 'debug-this'), array($this, 'sidebars_rendered'), 'Sidebar');
		add_debug_extension('sidebars', __('Registered Sidebars', 'debug-this'), __('All registered sidebars. Uses $wp_registered_sidebars', 'debug-this'), array($this, 'sidebars_registered'), 'Sidebar');
		add_debug_extension('styles', __('Styles', 'debug-this'), __('List of rendered and registered styles', 'debug-this'), array($this, 'styles'), 'Enqueue');
		add_debug_extension('taxonomies', __('Taxonomies', 'debug-this'), __('Lists all registered taxonomies in WordPress', 'debug-this'), array($this, 'taxonomies'), 'Taxonomy');
		add_debug_extension('template', __('Current Template', 'debug-this'), __('Current template file', 'debug-this'), array($this, 'template'), 'Themes');
		add_debug_extension('terms', __('Post Terms', 'debug-this'), __('All terms for the current single post/page', 'debug-this'), array($this, 'terms'), 'Taxonomy');
		add_debug_extension('terms-all', __('All Terms', 'debug-this'), __('A list of all terms', 'debug-this'), array($this, 'terms_all'), 'Taxonomy');
		if($version >= 3.4)
			add_debug_extension('themes', __('Themes', 'debug-this'), __('List of all WP_Theme objects', 'debug-this'), array($this, 'themes'), 'Themes');
		add_debug_extension('users', __('All Users', 'debug-this'), __('List of all users', 'debug-this'), array($this, 'users'), 'Users');
		add_debug_extension('variables', __('Variables', 'debug-this'), __('List of all defined variables', 'debug-this'), array($this, 'variables'), 'PHP');
		add_debug_extension('widgets', __('Widgets'), __('All registered widgets - uses $wp_widget_factor->widgets', 'debug-this'), array($this, 'widgets'), 'Sidebar');
		add_debug_extension('wp-debug', __('WP Debug'), __('Displays a list of notices rendered by WP_DEBUG mode', 'debug-this'), array($this, 'wp_debug'), 'PHP');
		add_debug_extension('wp_query', __('WP_Query'), __('Current WP_Query object - global $wp_query', 'debug-this'), array($this, 'wp_query'), 'Query');
		add_debug_extension('help', __('Debug This Menu', 'debug-this'), __('Modes Navigation', 'debug-this'), array($this, 'help'));
	}

	public function actions(){
		global $wp_actions;
		$wp_actions['shutdown'] = 1;
		$debug = print_r($wp_actions, true);
		return $debug;
	}

	public function attachments(){
		global $post;
		$args = array(
			'post_type' => 'attachment',
			'post_parent' => $post->ID,
			'posts_per_page' => -1
		);
		$attachments = get_children($args);
		if($attachments){
			foreach($attachments as $attachment){
				$title = $attachment->post_title ? $attachment->post_title : __('No Title', 'debug-this');
				$debug .= "<h3 class='emphasize'>$title</h3><ul>";
				$debug .= '<li>'.sprintf(__('ID: %s', 'debug-this'), $attachment->ID).'</li>';
				$debug .= '<li>'.sprintf(__('Mime Type: %s', 'debug-this'), $attachment->post_mime_type).'</li>';
				$url = wp_get_attachment_url($attachment->ID);
				$debug .= '<li>'. __('URL: ', 'debug-this')."<a href='$url'>$url</a></li>";
				if($attachment->post_content)
					$debug .= '<li>'.sprintf(__('Description: %s', 'debug-this'), $attachment->post_content);
				$debug .= '</ul>';
			}
		}
		else
			$debug = __('No attachments found.', 'debug-this');

		return $debug;
	}

	public function apache(){
		if(!preg_match('/[Aa]pache/', $_SERVER["SERVER_SOFTWARE"]))
			return __('This extension only works on Apache.', 'debug-this');

		$debug = '<h3 class="emphasize">'.__('Version', 'debug-this').'</h3>';
		$debug .= apache_get_version();
		$debug .= '<h3 class="emphasize">'.__('Modules', 'debug-this').'</h3>';
		$debug .= print_r(apache_get_modules(), true);
		if(!$debug)
			$debug = __("No modules were found. This could be a symptom of running PHP as CGI.", 'debug-this');
		return $debug;
	}

	public function author(){
		if(!is_singular())
			return __('This mode can only be used on a single post/page.', 'debug-this');
		global $post, $authordata;
		setup_postdata($post);
		$debug = print_r($authordata, true);
		return $debug;
	}

	public function backtrace(){
		$version = get_bloginfo('version');
		if($version >= 3.4){
			$debug = '<h3>'.__('Backtrace Summary', 'debug-this').'</h3>';
			$debug .= print_r(explode(', ', wp_debug_backtrace_summary()),true);
		}
		$debug .= '<h3>'.__('debug_backtrace()', 'debug-this').'</h3>';
		$debug .= htmlentities(print_r(debug_backtrace(), true));
		return $debug;
	}

	public function bloginfo(){
		global $wp_version;
		$bloginfo = array(
			'url' => get_bloginfo('url'),
			'wpurl' => get_bloginfo('wpurl'),
			'description' => get_bloginfo('description'),
			'rdf_url' => get_bloginfo('rdf_url'),
			'rss_url' => get_bloginfo('rss_url'),
			'rss2_url' => get_bloginfo('rss2_url'),
			'atom_url' => get_bloginfo('atom_url'),
			'comments_atom_url' => get_bloginfo('comments_atom_url'),
			'comments_rss2_url' => get_bloginfo('comments_rss2_url'),
			'pingback_url' => get_bloginfo('pingback_url'),
			'stylesheet_url' => get_bloginfo('stylesheet_url'),
			'stylesheet_directory' => get_bloginfo('stylesheet_directory'),
			'template_directory' => get_bloginfo('template_directory'),
			'template_url' => get_bloginfo('template_url'),
			'admin_email' => get_bloginfo('admin_email'),
			'charset' => get_bloginfo('charset'),
			'html_type' => get_bloginfo('html_type'),
			'version' => get_bloginfo('version'),
			'language' => get_bloginfo('language'),
			'name' => get_bloginfo('name')
		);
		$debug = print_r($bloginfo, true);
		return $debug;
	}

	public function cache(){
		# Appropriated from WP Debug Bar Plugin - class-debug-bar-object-cache.php
		global $wp_object_cache;
		ob_start();
		$wp_object_cache->stats();
		$debug = ob_get_contents();
		ob_end_clean();
		return $debug;
	}

	public function classes(){
		$debug = print_r(get_declared_classes(), true);
		return $debug;
	}

	public function constants(){
		$constants = get_defined_constants();
		foreach($constants as $constant => $value)
			if($value === false)
				$constants[$constant] = '<span class="error">'.__('false', 'debug-this').'</span>';
			elseif($value === '')
				$constants[$constant] = '<span class="error">'.__('empty string', 'debug-this').'</span>';
		$debug = print_r($constants, true);
		return $debug;
	}

	public function constants_wordpress(){
		$wp_constants = array('AUTOSAVE_INTERVAL', 'CORE_UPGRADE_SKIP_NEW_BUNDLED', 'DISABLE_WP_CRON', 'EMPTY_TRASH_DAYS', 'IMAGE_EDIT_OVERWRITE', 'MEDIA_TRASH', 'WPLANG', 'WP_DEFAULT_THEME', 'WP_CRON_LOCK_TIMEOUT', 'WP_MAIL_INTERVAL', 'WP_POST_REVISIONS', 'WP_MAX_MEMORY_LIMIT', 'WP_MEMORY_LIMIT', 'APP_REQUEST', 'COMMENTS_TEMPLATE', 'DOING_AJAX', 'DOING_AUTOSAVE', 'DOING_CRON', 'IFRAME_REQUEST', 'IS_PROFILE_PAGE', 'SHORTINIT', 'WP_ADMIN', 'WP_BLOG_ADMIN', 'WP_IMPORTING', 'WP_INSTALLING', 'WP_LOAD_IMPORTERS', 'WP_NETWORK_ADMIN', 'WP_REPAIRING', 'WP_SETUP_CONFIG', 'WP_UNINSTALL_PLUGIN', 'WP_USER_ADMIN', 'XMLRPC_REQUEST', 'ABSPATH', 'WPINC', 'WP_LANG_DIR', 'WP_PLUGIN_DIR', 'WP_PLUGIN_URL', 'WP_CONTENT_DIR', 'WP_CONTENT_URL', 'WP_HOME', 'WP_SITEURL', 'WP_TEMP_DIR', 'WPMU_PLUGIN_DIR', 'WPMU_PLUGIN_URL', 'DB_CHARSET', 'DB_COLLATE', 'DB_HOST', 'DB_NAME', 'DB_PASSWORD', 'DB_USER', 'WP_ALLOW_REPAIR', 'CUSTOM_USER_TABLE', 'CUSTOM_USER_META_TABLE', 'ALLOW_SUBDIRECTORY_INSTALL', 'BLOGUPLOADDIR', 'BLOG_ID_CURRENT_SITE', 'DOMAIN_CURRENT_SITE', 'DIEONDBERROR', 'ERRORLOGFILE', 'MULTISITE', 'NOBLOGREDIRECT', 'PATH_CURRENT_SITE', 'UPLOADBLOGSDIR', 'SITE_ID_CURRENT_SITE', 'SUBDOMAIN_INSTALL', 'SUNRISE', 'UPLOADS', 'WPMU_ACCEL_REDIRECT', 'WPMU_SENDFILE', 'WP_ALLOW_MULTISITE', 'WP_CACHE', 'COMPRESS_CSS', 'COMPRESS_SCRIPTS', 'CONCATENATE_SCRIPTS', 'ENFORCE_GZIP', 'FS_CHMOD_DIR', 'FS_CHMOD_FILE', 'FS_CONNECT_TIMEOUT', 'FS_METHOD', 'FS_TIMEOUT', 'FTP_BASE', 'FTP_CONTENT_DIR', 'FTP_HOST', 'FTP_LANG_DIR', 'FTP_PASS', 'FTP_PLUGIN_DIR', 'FTP_PRIKEY', 'FTP_PUBKEY', 'FTP_SSH', 'FTP_SSL', 'FTP_USER', 'WP_PROXY_BYPASS_HOSTS', 'WP_PROXY_HOST', 'WP_PROXY_PASSWORD', 'WP_PROXY_PORT', 'WP_PROXY_USERNAME', 'WP_HTTP_BLOCK_EXTERNAL', 'WP_ACCESSIBLE_HOSTS', 'BACKGROUND_IMAGE', 'HEADER_IMAGE', 'HEADER_IMAGE_HEIGHT', 'HEADER_IMAGE_WIDTH', 'HEADER_TEXTCOLOR', 'NO_HEADER_TEXT', 'STYLESHEETPATH', 'TEMPLATEPATH', 'WP_USE_THEMES', 'SAVEQUERIES', 'SCRIPT_DEBUG', 'WP_DEBUG', 'WP_DEBUG_DISPLAY', 'WP_DEBUG_LOG', 'ADMIN_COOKIE_PATH', 'ALLOW_UNFILTERED_UPLOADS', 'AUTH_COOKIE', 'AUTH_KEY', 'AUTH_SALT', 'COOKIEHASH', 'COOKIEPATH', 'COOKIE_DOMAIN', 'CUSTOM_TAGS', 'DISALLOW_FILE_EDIT', 'DISALLOW_FILE_MODS', 'DISALLOW_UNFILTERED_HTML', 'FORCE_SSL_ADMIN', 'FORCE_SSL_LOGIN', 'LOGGED_IN_COOKIE', 'LOGGED_IN_KEY', 'LOGGED_IN_SALT', 'NONCE_KEY', 'NONCE_SALT', 'PASS_COOKIE', 'PLUGINS_COOKIE_PATH', 'SECURE_AUTH_COOKIE', 'SECURE_AUTH_KEY', 'SECURE_AUTH_SALT', 'SITECOOKIEPATH', 'TEST_COOKIE', 'USER_COOKIE');
		ksort($wp_constants);
		$defined_constants = array();
		$undefined_constants = array();
		foreach($wp_constants as $constant){
			if(!defined($constant)){
				unset($wp_constants[$constant]);
				$undefined_constants[] = $constant;
			}
			else{
				$value = constant($constant);
				if($value === false)
					$defined_constants[$constant] = '<span class="error">'.__('false', 'debug-this').'</span>';
				elseif($value === '')
					$defined_constants[$constant] = '<span class="error">'.__('empty string', 'debug-this').'</span>';
				else
					$defined_constants[$constant] = $value;
			}
		}
		ksort($undefined_constants);
		$debug = '<h3 class="emphasize">'.__('Defined Constants', 'debug-this').'</h3>';
		$debug .= print_r($defined_constants, true);
		$debug .= '<h3 class="emphasize">'.__('Undefined Constants', 'debug-this').'</h3>';
		$debug .= print_r($undefined_constants, true);
		return $debug;
	}

	public function content_width(){
		global $content_width;
		return $content_width;
	}

	public function cron_schedules(){
		$schedules = wp_get_schedules();
		$debug = print_r($schedules, true);
		return $debug;
	}

	public function cron_jobs(){
		$jobs = _get_cron_array();
		if($jobs)
			$debug = print_r($jobs, true);
		else
			$debug = __('No cron jobs found.', 'debug-this');
		return $debug;
	}

	public function context(){
		global $wp_query;

		$conditionals = array(
			'is_single',
			'is_preview',
			'is_page',
			'is_archive',
			'is_date',
			'is_year',
			'is_month',
			'is_day',
			'is_time',
			'is_author',
			'is_category',
			'is_tag',
			'is_tax',
			'is_search',
			'is_feed',
			'is_comment_feed',
			'is_trackback',
			'is_home',
			'is_404',
			'is_comments_popup',
			'is_paged',
			'is_admin',
			'is_attachment',
			'is_singular',
			'is_robots',
			'is_posts_page',
			'is_post_type_archive'
		);
		$debug = "<ul>";
		foreach($conditionals as $conditional){
			if($wp_query->$conditional)
				$debug .= "<li>$conditional</li>";
		}
		$debug .= "</ul>";
		$debug = apply_filters('debug_context', $debug);
		return $debug;
	}

	public function css($buffer, $template){
		//Make backwards compatible for no pretty permalinks
		global $wp;
		$debug = sprintf(__('Template: %s', 'debug-this'), $template)."\n";
		$debug .= sprintf(__('URL: %s', 'debug-this'), get_bloginfo('url').'/'.$wp->request)."\n";
		$debug .= '<h3 class="emphasize">'.__('Stylesheets', 'debug-this').'</h3>';
		preg_match_all('/(http.+\.css)/', $buffer, $matches);
		$debug .= print_r($matches[0], true);
		return $debug;
	}

	public function dropins(){
		include_once ABSPATH.'/wp-admin/includes/plugin.php';
		$dropins = get_dropins();
		if($dropins)
			$debug = print_r($dropins, true);
		else
			$debug = sprintf(__("No dropins found. To learn more, please see: %s", 'debug-this'), "<a href='http://hakre.wordpress.com/2010/05/01/must-use-and-drop-ins-plugins/'>http://hakre.wordpress.com/2010/05/01/must-use-and-drop-ins-plugins/</a>");
		return $debug;
	}

	public function extensions(){
		$debug = print_r(get_loaded_extensions(), true);
		return $debug;
	}

	public function file_permissions(){

		if(!preg_match('/[Aa]pache/', $_SERVER["SERVER_SOFTWARE"]))
			return __('This extension has only been tested on Apache.', 'debug-this');

		function debug_this_file_info($file, $recommended_perms, $current){
			$output = "<h3 class='emphasize'>$file</h3>";
			$perms = debug_this_get_file_perms($file);
			if($perms){
				$perms_output = '';
				$rwx = debug_this_convert_perms_to_rwx($perms, $file);
				if($perms !== $recommended_perms)
					$perms_output = '<span class="error">'.sprintf(__('%s %s Recommended: %s - To change, run: chmod %s %s', 'debug-this'), $perms, $rwx, $recommended_perms, $recommended_perms, $file)."</span>";
				$perms .= " $rwx";
				$output .= sprintf(__('Permissions: %s', 'debug-this'), $perms_output ? $perms_output : $perms)."\n";
			}

			$own = debug_this_get_file_ownership($file);
			if($own){
				$user_perm = $perms[1];
				$group_perm = $perms[2];
				if($current['user']['name'] === $own['user']['name'] && (int)$user_perm < 4)
					$user = "<span class='error'>{$own['user']['name']}</span>";
				else
					$user = "<span class='okay'>{$own['user']['name']}</span>";

				if($current['group']['name'] === $own['group']['name'] && (int)$group_perm < 4)
					$group = "<span class='error'>{$own['group']['name']}</span>";
				else
					$group = "<span class='okay'>{$own['group']['name']}</span>";

				if($current['group']['name'] !== $own['group']['name'] && $current['user']['name'] !== $own['user']['name'])
					$output .= '<span class="error">'.__('The current WordPress user might not have access to this file/folder.', 'debug-this')."</span>\n";

				$output .= sprintf(__('Owner/Group: %s:%s', 'debug-this'), $user, $group)."\n";
			}

			return $output;
		}

		$legend = '<span class="okay">'.__('access', 'debug-this').'</span> - <span class="error">'.__('no access', 'debug-this')."</span>";
		$debug = sprintf(__('Rubric: %s', 'debug-this'), $legend);

		$user = posix_getpwuid(getmyuid());
		$group = posix_getgrgid(getmygid());
		$current_user = compact('user', 'group');

		$debug .= '<h3 class="emphasize">'.__('WordPress User', 'debug-this').'</h3>';
		$debug .= sprintf(__('User: %s', 'debug-this'), $user['name'])."\n";
		$debug .= sprintf(__('Group: %s', 'debug-this'), $group['name']);

		$debug .= debug_this_file_info(ABSPATH, '0755', $current_user);
		if(file_exists(ABSPATH.'.htaccess'))
			$debug .= debug_this_file_info(ABSPATH.'.htaccess', '0604', $current_user);

		if(file_exists(ABSPATH.'php.ini'))
			$debug .= debug_this_file_info(ABSPATH.'php.ini', '0600', $current_user);

		if(file_exists(ABSPATH.'wp-config.php'))
			$debug .= debug_this_file_info(ABSPATH.'wp-config.php', '0600', $current_user);
		else{
			$parts = explode('/', trim(ABSPATH, '/'));
			array_pop($parts);
			$one_below = '/'.implode('/', $parts).'/wp-config.php';
			if(file_exists($one_below))
				$debug .= debug_this_file_info($one_below, '0600', $current_user);
			else{
				$debug .= "<h3 class='emphasize error'>wp-config.php</h3>";
				$debug .= '<span class="error">'.__("Couldn't find wp-config.php!", 'debug-this').'</span>';
			}
		}

		$debug .= debug_this_file_info(WP_CONTENT_DIR, '0755', $current_user);
		$debug .= debug_this_file_info(WP_PLUGIN_DIR, '0755', $current_user);
		$debug .= debug_this_file_info(get_theme_root(), '0755', $current_user);
		$uploads = wp_upload_dir();
		$debug .= debug_this_file_info($uploads['basedir'], '0755', $current_user);
		return $debug;
	}

	public function files(){
		$debug = '<h3 class="emphasize">'.__('Required Files', 'debug-this').'</h3>';
		$debug .= print_r(get_required_files(), true);
		$debug .= '<h3 class="emphasize">'.__('Included Files', 'debug-this').'</h3>';
		$debug .= print_r(get_included_files(), true);
		return $debug;
	}

	public function filters(){
		global $wp_filter;
		$debug = '';
		foreach($wp_filter as $id => $groups){
			$debug .= "<h3 class='emphasize'>$id</h3>\n<ul>";
			foreach($groups as $filters){
				foreach($filters as $filter => $values){
					$callback = is_string($values['function']) ? $values['function'] : '(object)';
					$debug .= "<li>$filter ({$callback})</li>\n";
				}
			}
			$debug .= '</ul>';
		}
		return $debug;
	}

	public function filters_current(){
		global $debug_this_current_filter;
		$debug = print_r($debug_this_current_filter, true);
		return $debug;
	}

	public function functions(){
		$functions = get_defined_functions();
		$debug     = print_r($functions['user'], true);
		return $debug;
	}

	public function images($buffer){;
		preg_match_all('/src=[\'"](http.+\.(jpg|jpeg|png|svg))\'?"?/', $buffer, $matches);
		$debug = print_r($matches[1], true);
		return $debug;
	}

	public function imagesizes(){
		global $_wp_additional_image_sizes;
		$sizes = get_intermediate_image_sizes();
		$debug = '<h3>'.__('Registered Sizes Names', 'debug-this').'</h3>';
		$debug .= print_r($sizes, true);
		$debug .= '<h3>'.__('Registered Size Definitions', 'debug-this').'</h3>';
		$debug .= print_r($_wp_additional_image_sizes, true);
		return $debug;
	}

	public function js($buffer, $template){
		//make backwards compatible for no permalinks
		global $wp;
		$debug = sprintf(__('Template: %s', 'debug-this'), $template)."\n";
		$debug .= sprintf(__('URL: %s', 'debug-this'), get_bloginfo('url').'/'.$wp->request)."\n";
		$debug .= '<h3 class="emphasize">'.__('JavaScript Files', 'debug-this').'</h3>';
		preg_match_all('/(http.+\.js)/', $buffer, $matches);
		$debug .= print_r($matches[0], true);
		return $debug;
	}

	public function load_time($buffer, $template){
		//make backwards compatible for no permalinks
		global $wp;
		$debug = sprintf(__('Template: %s', 'debug-this'), $template)."\n";
		$debug .= sprintf(__('URL: %s', 'debug-this'), get_bloginfo('url').'/'.$wp->request)."\n";
		$debug .= sprintf(__('Execution Time: %s', 'debug-this'), Debug_This::$execution_time . ' ' .__('seconds', 'debug-this'));
		return $debug;
	}

	public function menus(){
		$debug = print_r(get_registered_nav_menus(), true);
		return $debug;
	}

	public function menus_dynamic(){
		$debug = '<h3>'.__('Dynamic Menu Locations', 'debug-this').'</h3>';
		$debug .= print_r(get_nav_menu_locations(), true);
		$debug .= '<h3>'.__('Dynamic Menus', 'debug-this').'</h3>';
		$menus = wp_get_nav_menus(array('orderby' => 'name'));
		foreach($menus as $id => $menu)
			$menus[$id]->items = wp_get_nav_menu_items($menu->term_id);
		$debug .= print_r($menus, true);
		return $debug;
	}

	public function oembed(){
		include_once ABSPATH . '/wp-includes/class-oembed.php';
		$debug = print_r(_wp_oembed_get_object(), true);
		return $debug;
	}

	public function options(){
		$debug = htmlentities(print_r(wp_load_alloptions(), true));
		return $debug;
	}

	public function phpinfo(){
		ob_start();
		phpinfo();
		$debug = ob_get_contents();
		ob_end_clean();
		Debug_This::$no_pre = true;
		return $debug;
	}

	public function phpini(){
		$debug = print_r(ini_get_all(), true);
		return $debug;
	}

	public function plugins(){
		include_once ABSPATH.'/wp-admin/includes/plugin.php';
		$debug = htmlentities(print_r(get_plugins(), true));
		return $debug;
	}

	public function post(){
		if(is_singular()){
			global $post;
			$debug = htmlentities(print_r($post, true));
		}
		else
			$debug = __('This mode only works for single posts/pages', 'debug-this');
		return $debug;
	}

	public function posts(){
		if(!is_singular()){
			global $wp_query;
			$posts_count = count($wp_query->posts);
			$debug = sprintf(__('Number of Posts: %d'), $posts_count)."\n\n";
			$debug .= htmlentities(print_r($wp_query->posts, true));
		}
		else
			$debug = __('This mode only works for archive/home pages', 'debug-this');
		return $debug;
	}

	public function post_meta(){
		if(!is_singular())
			return __('This mode only works for single posts/pages', 'debug-this');

		global $post;
		$debug = print_r(get_post_custom($post->ID), true);
		return $debug;
	}

	public function posttypes(){
		global $post;
		$post_types = get_post_types('', 'objects');
		$debug = print_r($post_types, true);
		return $debug;
	}

	public function posttype_current(){
		global $wp_query;
		if($wp_query->queried_object)
			$post = $wp_query->queried_object;
		$post_types = get_post_types('', 'objects');
		$debug = print_r(array($post->post_type => $post_types[$post->post_type]), true)."\n\n";
		return $debug;
	}

	public function queries(){
		if(Debug_This::$queries)
			$debug = print_r(Debug_This::$queries, true);
		else
			$debug = '<span class="error">'.__('Please set define("SAVEQUERIES", true); in wp-config.php to see saved queries. Please disable when completed as this can be a large performance hit.', 'debug-this').'</span>';
		return $debug;
	}

	public function request(){
		global $wp;
		$wp->matched_rule = "<a href='?debug=rewrites'>$wp->matched_rule</a>";
		$debug = print_r($wp, true);
		return $debug;
	}

	public function rewrites(){
		global $wp_rewrite, $wp;
		$permalink_structure = get_option('permalink_structure');

		if(!$permalink_structure)
			return __('Pretty permalinks must be enabled to use this mode. To set a permalink structure, go to Settings->Permalinks in wp-admin.', 'debug-this');

	    $debug = '<h3>'.__('Current Rewrite', 'debug-this').'</h3>';
	    $debug .= __('Matched Rule', 'debug-this').": <span class='current'>$wp->matched_rule</span>\n";
	    $debug .= __('Matched Query', 'debug-this').": $wp->matched_query\n";
	    $debug .= __('Query String', 'debug-this').": $wp->query_string\n\n";
	    $debug .= '<h3>'.__('Rewrite Rules', 'debug-this').'</h3>';

	  	if(!empty($wp_rewrite->rules)){
		    $debug .= '<table><thead><tr>';
		    $debug .= '<td><strong>'.__('Rule', 'debug-this').'</strong></td><td><strong>'.__('Rewrite', 'debug-this').'</strong></td>';
		    $debug .= '</tr></thead><tbody>';
		    foreach($wp_rewrite->rules as $rule => $rewrite){
		    	$class = $wp->matched_rule === $rule ? 'class="current"' : '';
		    	$debug .= '<tr><td '.$class.'>'.$rule.'</td><td '.$class.'>'.$rewrite.'</td></tr>';
		    }
		    $debug .= '</tbody></table>';
	  	}
	  	else
	    	echo __('No rules defined.', 'debug-this');
		return $debug;
	}

	public function scripts(){
		global $wp_scripts;
		$debug = print_r($wp_scripts->registered, true);
		return $debug;
	}

	public function server(){
		$debug = print_r($_SERVER, true);
		return $debug;
	}

	public function shortcodes(){
		global $shortcode_tags;
		$debug = htmlentities(print_r($shortcode_tags, true));
		return $debug;
	}

	public function shortcodes_regex(){
		$regex = get_shortcode_regex();
		$debug = htmlentities(print_r($regex, true));
		return $debug;
	}

	public function sidebars_rendered($buffer, $template){
		global $wp_registered_sidebars;
		$template_contents = file_get_contents($template);
		preg_match_all('/(get_sidebar|dynamic_sidebar).+\)/', $template_contents, $matches);
		$sidebars = array();
		foreach($matches[0] as $sidebar){
			if($sidebar === 'get_sidebar()')
				$sidebars[] = 'get_sidebar() ' . locate_template('sidebar.php');
			else{
				preg_match_all('/\(.+\)/', $sidebar, $parts);
				foreach($parts[0] as $part){
					$sidebar_name = trim($part, ' )(\'"');
					if(preg_match('/dynamic/', $sidebar))
						$sidebars[] = sprintf(__('Dynamic Sidebar: %s'), $sidebar_name);
					else{
						$path = locate_template("$sidebar_name.php");
						$path = $path ? $path : sprintf(__('Missing sidebar template for %s.php', 'debug-this'), $sidebar_name);
						$sidebars[] = "get_sidebar('$sidebar_name') $path";
					}
				}
			}
		}
		$debug = sprintf(__('Current Template: %s', 'debug-this'), $template)."\n\n";
		if($sidebars)
			$debug .= htmlentities(print_r($sidebars, true))."\n";
		else
			$debug .= __('No sidebars were found in this template.', 'debug-this');
		return $debug;
	}

	public function sidebars_registered(){
		global $wp_registered_sidebars;
		$debug = '<h3>'.__('Registered Sidebars', 'debug-this').'</h3>';
		$debug .= htmlentities(print_r($wp_registered_sidebars, true));
		return $debug;
	}

	public function styles(){
		global $wp_styles;
		$debug = print_r($wp_styles->registered, true);
		return $debug;
	}

	public function taxonomies(){
		$debug = print_r(get_taxonomies('', 'objects'), true);
		return $debug;
	}

	public function template(){
		global $template;
		$template = $template;
		$debug = print_r($template, true);
		return $debug;
	}

	public function terms_all(){
		$taxonomies = get_taxonomies('', 'names');
		$debug = print_r(get_terms($taxonomies), true);
		return $debug;
	}

	public function terms(){
		global $post;
		if(is_singular()){
			$debug = '';
			$taxonomies = get_taxonomies('','names');
			foreach($taxonomies as $taxonomy){
				$terms = wp_get_post_terms($post->ID, $taxonomy);
				if($terms){
					$debug .= "<h3 class='emphasize'>$taxonomy</h3><ul>";
					foreach($terms as $term)
						$debug .= '<li>'.sprintf(__('Term ID #%s - %s - %s', 'debug-this'), $term->term_id, $term->slug, $term->name).'</li>';
					$debug .= '</ul>';
				}
			}

		}
		else
			$debug = '<span class="error">'.__('This mode only works on single pages/posts.', 'debug-this').'</span>';
		return $debug;
	}

	public function themes(){
		$debug = '<h3>'.__('Current Theme', 'debug-this').'</h3>';
		$debug .= print_r(get_current_theme(), true)."\n\n";
		$themes = wp_get_themes();
		$debug .= '<h3>'.__('Themes', 'debug-this').'</h3>';
		$debug .= print_r(wp_get_themes(), true);
		return $debug;
	}

	public function users(){
		$users = get_users();
		$debug = '';
		foreach($users as $user){
			$login = property_exists($user, 'data') ? $user->data->user_login : $user->user_login;
			$debug .= "<h3 class='emphasize'>{$login}</h3>";
			$debug .= print_r($user, true);
		}
		return $debug;
	}

	public function variables(){
		$debug = '';
		foreach($GLOBALS as $id => $values){
			if($id === 'GLOBALS' || $id === 'html')
				continue;
			if(is_array($values) && !empty($values)){
				$debug .= "<h3>$id</h3>";
				$debug .= htmlentities(print_r(array_keys($values), true));
			}
			elseif(is_string($values)){
				$debug .= "<h3>$id</h3>";
				$debug .= htmlentities("$values\n\n");
			}
		}
		return $debug;
	}

	public function widgets(){
		global $wp_widget_factory;
		$debug = print_r($wp_widget_factory->widgets, true);
		return $debug;
	}

	public function wp_debug(){
		if(defined('WP_DEBUG') && WP_DEBUG === true && defined('WP_DEBUG_LOG') && WP_DEBUG_LOG === true){
			$path = WP_CONTENT_DIR.'/debug.log';
			$debug = '';
			if(file_exists($path) && is_writeable($path)){
				add_debug_header_link(Debug_This::get_current_debug_url().'&clear-debug-log=true', __('Reset log file', 'debug-this'));
				if(isset($_GET['clear-debug-log'])){
					if(file_put_contents($path, '') === 0)
						$debug .= __('Debug log was successfully cleared.', 'debug-this');
					else
						$debug .= __('Debug log could not be reset. Please try again', 'debug-this');
				}
				$debug .= file_get_contents($path);
				if(!$debug)
					$debug .= __('Looking good! No notices were logged.', 'debug-this');
			}
			elseif(touch($path))
				$debug = __('Looking good! No notices were logged.', 'debug-this'); #Better reporting. If nothing was found, it's not a file perms error.
			else
				$debug = __('Could not open debug.log. Please make sure your wp-content folder is writeable by the web server user.', 'debug-this');
			return $debug;
		}
		else{
			$debug = __("Please add the following to wp-config.php to use this mode.\ndefine('WP_DEBUG', true);\ndefine('WP_DEBUG_LOG', true);\ndefine('WP_DEBUG_DISPLAY', false);", 'debug-this');
			return $debug;
		}
	}

	public function wp_query(){
		global $wp_query;
		$debug = htmlentities(print_r($wp_query, true));
		return $debug;
	}
}
new Debug_This_Extensions;