/wp-content/plugins/autoptimize/autoptimize.php

<?php
/*
Plugin Name: Autoptimize
Plugin URI: https://autoptimize.com/
Description: Optimizes your website, concatenating the CSS and JavaScript code, and compressing it.
Version: 2.3.2
Author: Frank Goossens (futtta)
Author URI: https://autoptimize.com/
Domain Path: localization/
Text Domain: autoptimize
Released under the GNU General Public License (GPL)
http://www.gnu.org/licenses/gpl.txt
*/

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

define('AUTOPTIMIZE_PLUGIN_DIR',plugin_dir_path(__FILE__));

// Load config class
include(AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeConfig.php');

// Load toolbar class
include( AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeToolbar.php' );

// Load partners tab if admin
if (is_admin()) {
    include AUTOPTIMIZE_PLUGIN_DIR.'classlesses/autoptimizePartners.php';
}

// Do we gzip when caching (needed early to load autoptimizeCache.php)
define('AUTOPTIMIZE_CACHE_NOGZIP',(bool) get_option('autoptimize_cache_nogzip'));

// Load cache class
include(AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeCache.php');

// wp-content dir name (automagically set, should not be needed), dirname of AO cache dir and AO-prefix can be overridden in wp-config.php
if (!defined('AUTOPTIMIZE_WP_CONTENT_NAME')) { define('AUTOPTIMIZE_WP_CONTENT_NAME','/'.wp_basename( WP_CONTENT_DIR )); }
if (!defined('AUTOPTIMIZE_CACHE_CHILD_DIR')) { define('AUTOPTIMIZE_CACHE_CHILD_DIR','/cache/autoptimize/'); }
if (!defined('AUTOPTIMIZE_CACHEFILE_PREFIX')) { define('AUTOPTIMIZE_CACHEFILE_PREFIX', 'autoptimize_'); }

// Plugin dir constants (plugin url's defined later to accomodate domain mapped sites)
if (is_multisite() && apply_filters( 'autoptimize_separate_blog_caches' , true )) {
    $blog_id = get_current_blog_id();
    define('AUTOPTIMIZE_CACHE_DIR', WP_CONTENT_DIR.AUTOPTIMIZE_CACHE_CHILD_DIR.$blog_id.'/' );
} else {
    define('AUTOPTIMIZE_CACHE_DIR', WP_CONTENT_DIR.AUTOPTIMIZE_CACHE_CHILD_DIR);
}
define('AUTOPTIMIZE_CACHE_DELAY',true);
define('WP_ROOT_DIR',substr(WP_CONTENT_DIR, 0, strlen(WP_CONTENT_DIR)-strlen(AUTOPTIMIZE_WP_CONTENT_NAME)));

// WP CLI
if ( defined( 'WP_CLI' ) && WP_CLI ) {
	require_once AUTOPTIMIZE_PLUGIN_DIR . 'classes/autoptimizeCLI.php';
}

// Initialize the cache at least once
$conf = autoptimizeConfig::instance();

/* Check if we're updating, in which case we might need to do stuff and flush the cache
to avoid old versions of aggregated files lingering around */

$autoptimize_version="2.3.0";
$autoptimize_db_version=get_option('autoptimize_version','none');

if ($autoptimize_db_version !== $autoptimize_version) {
    if ($autoptimize_db_version==="none") {
        add_action('admin_notices', 'autoptimize_install_config_notice');
    } else {
        // updating, include the update-code
        include(AUTOPTIMIZE_PLUGIN_DIR.'classlesses/autoptimizeUpdateCode.php');
    }

    update_option('autoptimize_version',$autoptimize_version);
    $autoptimize_db_version=$autoptimize_version;
}

// Load translations
function autoptimize_load_plugin_textdomain() {
    load_plugin_textdomain('autoptimize',false,plugin_basename(dirname( __FILE__ )).'/localization');
}
add_action( 'init', 'autoptimize_load_plugin_textdomain' );

function autoptimize_uninstall(){
    autoptimizeCache::clearall();

    $delete_options=array("autoptimize_cache_clean", "autoptimize_cache_nogzip", "autoptimize_css", "autoptimize_css_datauris", "autoptimize_css_justhead", "autoptimize_css_defer", "autoptimize_css_defer_inline", "autoptimize_css_inline", "autoptimize_css_exclude", "autoptimize_html", "autoptimize_html_keepcomments", "autoptimize_js", "autoptimize_js_exclude", "autoptimize_js_forcehead", "autoptimize_js_justhead", "autoptimize_js_trycatch", "autoptimize_version", "autoptimize_show_adv", "autoptimize_cdn_url", "autoptimize_cachesize_notice","autoptimize_css_include_inline","autoptimize_js_include_inline","autoptimize_optimize_logged","autoptimize_optimize_checkout","autoptimize_extra_settings");

    if ( !is_multisite() ) {
        foreach ($delete_options as $del_opt) { delete_option( $del_opt ); }
    } else {
        global $wpdb;
        $blog_ids = $wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs" );
        $original_blog_id = get_current_blog_id();
        foreach ( $blog_ids as $blog_id ) {
            switch_to_blog( $blog_id );
            foreach ($delete_options as $del_opt) { delete_option( $del_opt ); }
        }
        switch_to_blog( $original_blog_id );
    }

    if ( wp_get_schedule( 'ao_cachechecker' ) ) {
        wp_clear_scheduled_hook( 'ao_cachechecker' );
    }
}

function autoptimize_install_config_notice() {
    echo '<div class="updated"><p>';
    _e('Thank you for installing and activating Autoptimize. Please configure it under "Settings" -> "Autoptimize" to start improving your site\'s performance.', 'autoptimize' );
    echo '</p></div>';
}

function autoptimize_update_config_notice() {
    echo '<div class="updated"><p>';
    _e('Autoptimize has just been updated. Please <strong>test your site now</strong> and adapt Autoptimize config if needed.', 'autoptimize' );
    echo '</p></div>';
}

function autoptimize_cache_unavailable_notice() {
    echo '<div class="error"><p>';
    printf( __( 'Autoptimize cannot write to the cache directory (%s), please fix to enable CSS/ JS optimization!', 'autoptimize' ), AUTOPTIMIZE_CACHE_DIR );
    echo '</p></div>';
}

// Set up the buffering
function autoptimize_start_buffering() {
    $ao_noptimize = false;

    // noptimize in qs to get non-optimized page for debugging
    if (array_key_exists("ao_noptimize",$_GET) || array_key_exists("ao_noptirocket",$_GET)) {
        if ( ( ($_GET["ao_noptimize"]==="1") || ($_GET["ao_noptirocket"]==="1") ) && (apply_filters('autoptimize_filter_honor_qs_noptimize',true)) ) {
            $ao_noptimize = true;
        }
    }

    // check for DONOTMINIFY constant as used by e.g. WooCommerce POS
    if (defined('DONOTMINIFY') && (constant('DONOTMINIFY')===true || constant('DONOTMINIFY')==="true")) {
        $ao_noptimize = true;
    }

	// if setting says not to optimize logged in user and user is logged in
	if ( get_option('autoptimize_optimize_logged','on') !== 'on' && is_user_logged_in() && current_user_can('edit_posts') ) {
		$ao_noptimize = true;
	}

	// if setting says not to optimize cart/ checkout
	if ( get_option('autoptimize_optimize_checkout','on') !== 'on' ) {
		// checking for woocommerce, easy digital downloads and wp ecommerce
		foreach ( array("is_checkout","is_cart","edd_is_checkout","wpsc_is_cart","wpsc_is_checkout") as $shopCond ) {
			if ( function_exists($shopCond) && $shopCond() ) {
				$ao_noptimize = true;
				break;
			}
		}
	}

    // filter you can use to block autoptimization on your own terms
    $ao_noptimize = (bool) apply_filters( 'autoptimize_filter_noptimize', $ao_noptimize );

    if (!is_feed() && !$ao_noptimize && !is_admin() && ( !function_exists('is_customize_preview') || !is_customize_preview() ) ) {
        // load speedupper conditionally (true by default?)
        if ( apply_filters('autoptimize_filter_speedupper', true) ) {
            include(AUTOPTIMIZE_PLUGIN_DIR.'classlesses/autoptimizeSpeedupper.php');
        }

        // Config element
        $conf = autoptimizeConfig::instance();

        // Load our base class
        include(AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeBase.php');

        // Load extra classes and set some vars
        if($conf->get('autoptimize_html')) {
            include(AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeHTML.php');
            // BUG: new minify-html does not support keeping HTML comments, skipping for now
            // if (defined('AUTOPTIMIZE_LEGACY_MINIFIERS')) {
                @include(AUTOPTIMIZE_PLUGIN_DIR.'classes/external/php/minify-html.php');
            // } else {
            //    @include(AUTOPTIMIZE_PLUGIN_DIR.'classes/external/php/minify-2.1.7-html.php');
            // }
        }

        if($conf->get('autoptimize_js')) {
            include(AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeScripts.php');
            if (!class_exists('JSMin')) {
                if (defined('AUTOPTIMIZE_LEGACY_MINIFIERS')) {
                    @include(AUTOPTIMIZE_PLUGIN_DIR.'classes/external/php/jsmin-1.1.1.php');
                } else {
                    @include(AUTOPTIMIZE_PLUGIN_DIR.'classes/external/php/minify-2.3.1-jsmin.php');
                }
            }
            if ( ! defined( 'CONCATENATE_SCRIPTS' )) {
                define('CONCATENATE_SCRIPTS',false);
            }
            if ( ! defined( 'COMPRESS_SCRIPTS' )) {
                define('COMPRESS_SCRIPTS',false);
            }
        }

        if($conf->get('autoptimize_css')) {
            include(AUTOPTIMIZE_PLUGIN_DIR.'classes/autoptimizeStyles.php');
            if (defined('AUTOPTIMIZE_LEGACY_MINIFIERS')) {
                if (!class_exists('Minify_CSS_Compressor')) {
                    @include(AUTOPTIMIZE_PLUGIN_DIR.'classes/external/php/minify-css-compressor.php');
                }
            } else {
                if (!class_exists('CSSmin')) {
                    @include(AUTOPTIMIZE_PLUGIN_DIR.'classes/external/php/yui-php-cssmin-2.4.8-4_fgo.php');
                }
            }
            if ( ! defined( 'COMPRESS_CSS' )) {
                define('COMPRESS_CSS',false);
            }
        }

        // filter to be used with care, kills all output buffers when true. use with extreme caution. you have been warned!
        if (apply_filters('autoptimize_filter_obkiller',false)) {
            while (ob_get_level() > 0) {
                ob_end_clean();
            }
        }
        // Now, start the real thing!
        ob_start('autoptimize_end_buffering');
    }
}

// Action on end, this is where the magic happens
function autoptimize_end_buffering($content) {
    if ( ((stripos($content,"<html") === false) && (stripos($content,"<!DOCTYPE html") === false)) || preg_match('/<html[^>]*(?:amp|⚡)/',$content) === 1 || stripos($content,"<xsl:stylesheet") !== false ) { return $content; }

    // load URL constants as late as possible to allow domain mapper to kick in
    if (function_exists("domain_mapping_siteurl")) {
        define('AUTOPTIMIZE_WP_SITE_URL',domain_mapping_siteurl(get_current_blog_id()));
        define('AUTOPTIMIZE_WP_CONTENT_URL',str_replace(get_original_url(AUTOPTIMIZE_WP_SITE_URL),AUTOPTIMIZE_WP_SITE_URL,content_url()));
    } else {
        define('AUTOPTIMIZE_WP_SITE_URL',site_url());
        define('AUTOPTIMIZE_WP_CONTENT_URL',content_url());
    }

    if ( is_multisite() && apply_filters( 'autoptimize_separate_blog_caches' , true ) ) {
        $blog_id = get_current_blog_id();
        define('AUTOPTIMIZE_CACHE_URL',AUTOPTIMIZE_WP_CONTENT_URL.AUTOPTIMIZE_CACHE_CHILD_DIR.$blog_id.'/' );
    } else {
        define('AUTOPTIMIZE_CACHE_URL',AUTOPTIMIZE_WP_CONTENT_URL.AUTOPTIMIZE_CACHE_CHILD_DIR);
    }
    define('AUTOPTIMIZE_WP_ROOT_URL',str_replace(AUTOPTIMIZE_WP_CONTENT_NAME,'',AUTOPTIMIZE_WP_CONTENT_URL));
    define('AUTOPTIMIZE_HASH',wp_hash(AUTOPTIMIZE_CACHE_DIR));

    // Config element
    $conf = autoptimizeConfig::instance();

    // Choose the classes
    $classes = array();
    if($conf->get('autoptimize_js'))
        $classes[] = 'autoptimizeScripts';
    if($conf->get('autoptimize_css'))
        $classes[] = 'autoptimizeStyles';
    if($conf->get('autoptimize_html'))
        $classes[] = 'autoptimizeHTML';

    // Set some options
    $classoptions = array(
        'autoptimizeScripts' => array(
            'justhead' => $conf->get('autoptimize_js_justhead'),
            'forcehead' => $conf->get('autoptimize_js_forcehead'),
            'trycatch' => $conf->get('autoptimize_js_trycatch'),
            'js_exclude' => $conf->get('autoptimize_js_exclude'),
            'cdn_url' => $conf->get('autoptimize_cdn_url'),
            'include_inline' => $conf->get('autoptimize_js_include_inline')
        ),
        'autoptimizeStyles' => array(
            'justhead' => $conf->get('autoptimize_css_justhead'),
            'datauris' => $conf->get('autoptimize_css_datauris'),
            'defer' => $conf->get('autoptimize_css_defer'),
            'defer_inline' => $conf->get('autoptimize_css_defer_inline'),
            'inline' => $conf->get('autoptimize_css_inline'),
            'css_exclude' => $conf->get('autoptimize_css_exclude'),
            'cdn_url' => $conf->get('autoptimize_cdn_url'),
            'include_inline' => $conf->get('autoptimize_css_include_inline'),
            'nogooglefont' => $conf->get('autoptimize_css_nogooglefont')
        ),
        'autoptimizeHTML' => array(
            'keepcomments' => $conf->get('autoptimize_html_keepcomments')
        )
    );

    $content = apply_filters( 'autoptimize_filter_html_before_minify', $content );

    // Run the classes
    foreach($classes as $name) {
        $instance = new $name($content);
        if($instance->read($classoptions[$name])) {
            $instance->minify();
            $instance->cache();
            $content = $instance->getcontent();
        }
        unset($instance);
    }
    
    $content = apply_filters( 'autoptimize_html_after_minify', $content );
    return $content;
}

if ( autoptimizeCache::cacheavail() ) {
    $conf = autoptimizeConfig::instance();
    if( $conf->get('autoptimize_html') || $conf->get('autoptimize_js') || $conf->get('autoptimize_css') ) {
        // Hook to wordpress
        if (defined('AUTOPTIMIZE_INIT_EARLIER')) {
            add_action('init','autoptimize_start_buffering',-1);
        } else {
            if (!defined('AUTOPTIMIZE_HOOK_INTO')) { define('AUTOPTIMIZE_HOOK_INTO', 'template_redirect'); }
            add_action(constant("AUTOPTIMIZE_HOOK_INTO"),'autoptimize_start_buffering',2);
        }
    }
} else {
    add_action('admin_notices', 'autoptimize_cache_unavailable_notice');
}

function autoptimize_activate() {
    register_uninstall_hook( __FILE__, 'autoptimize_uninstall' );
}
register_activation_hook( __FILE__, 'autoptimize_activate' );

include_once('classlesses/autoptimizeCacheChecker.php');

add_action('plugins_loaded','includeAutoptimizeExtra');
function includeAutoptimizeExtra() {
    if ( apply_filters('autoptimize_filter_extra_activate',true) ) {
        include_once('classlesses/autoptimizeExtra.php');
    }
}

// Do not pollute other plugins
unset($conf);