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Filename : wp-smush.php
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<?php
/**
 * WP Smush plugin
 *
 * Reduce image file sizes, improve performance and boost your SEO using the free
 * <a href="https://wpmudev.com/">WPMU DEV</a> WordPress Smush API.
 *
 * @link              http://wpmudev.com/project/wp-smush-pro/
 * @since             1.0.0
 * @package           WP_Smush
 *
 * @wordpress-plugin
 * Plugin Name:       Smush
 * Plugin URI:        https://wpmudev.com/project/wp-smush-pro/
 * Description:       Reduce image file sizes, improve performance and boost your SEO using the free <a href="https://wpmudev.com/">WPMU DEV</a> WordPress Smush API.
 * Version:           4.0.3
 * Requires at least: 6.4
 * Requires PHP:      7.4
 * Author:            WPMU DEV
 * Author URI:        https://wpmudev.com/
 * License:           GPLv2
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       wp-smushit
 * Domain Path:       /languages/
 * Network:           true
 */

/*
This plugin was originally developed by Alex Dunae (http://dialect.ca/).

Copyright 2007-2022 Incsub (http://incsub.com)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License (Version 2 - GPLv2) as published by
the Free Software Foundation.

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 more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

// If this file is called directly, abort.
use Smush\Core\Background\Background_Utils;
use Smush\Core\Background\Mutex;
use Smush\Core\Membership\Membership;

if ( ! defined( 'WPINC' ) ) {
	die;
}

if ( ! defined( 'WP_SMUSH_VERSION' ) ) {
	define( 'WP_SMUSH_VERSION', '4.0.3' );
}
if ( ! defined( 'WP_SMUSH_RELEASE_DATE' ) ) {
	define( 'WP_SMUSH_RELEASE_DATE', '15 April 2026' );
}
// Used to define body class.
if ( ! defined( 'WP_SHARED_UI_VERSION' ) ) {
	define( 'WP_SHARED_UI_VERSION', 'sui-2-12-23' );
}
if ( ! defined( 'WP_SMUSH_BASENAME' ) ) {
	define( 'WP_SMUSH_BASENAME', plugin_basename( __FILE__ ) );
}
if ( ! defined( 'WP_SMUSH_API' ) ) {
	define( 'WP_SMUSH_API', 'https://smushpro.wpmudev.com/1.0/' );
}
if ( ! defined( 'WP_SMUSH_UA' ) ) {
	define( 'WP_SMUSH_UA', 'WP Smush/' . WP_SMUSH_VERSION . '; ' . network_home_url() );
}
if ( ! defined( 'WP_SMUSH_DIR' ) ) {
	define( 'WP_SMUSH_DIR', plugin_dir_path( __FILE__ ) );
}
if ( ! defined( 'WP_SMUSH_URL' ) ) {
	define( 'WP_SMUSH_URL', plugin_dir_url( __FILE__ ) );
}
if ( ! defined( 'WP_SMUSH_MAX_BYTES' ) ) {
	define( 'WP_SMUSH_MAX_BYTES', 5242880 );
}
if ( ! defined( 'WP_SMUSH_TIMEOUT' ) ) {
	define( 'WP_SMUSH_TIMEOUT', 420 ); // 7 minutes
}
if ( ! defined( 'WP_SMUSH_RETRY_ATTEMPTS' ) ) {
	define( 'WP_SMUSH_RETRY_ATTEMPTS', 3 );
}
if ( ! defined( 'WP_SMUSH_RETRY_WAIT' ) ) {
	define( 'WP_SMUSH_RETRY_WAIT', 1 );
}
if ( ! defined( 'WP_SMUSH_PARALLEL' ) ) {
	define( 'WP_SMUSH_PARALLEL', true );
}
if ( ! defined( 'WP_SMUSH_BACKGROUND' ) ) {
	define( 'WP_SMUSH_BACKGROUND', true );
}
if ( ! defined( 'WP_SMUSH_MIN_PHP_VERSION' ) ) {
	define( 'WP_SMUSH_MIN_PHP_VERSION', '7.4' );
}
if ( ! defined( 'WP_SMUSH_STREAMS_CUTOFF_SIZE' ) ) {
	define( 'WP_SMUSH_STREAMS_CUTOFF_SIZE', 5 * 1024 * 1024 ); // 5MB
}

if ( version_compare( PHP_VERSION, WP_SMUSH_MIN_PHP_VERSION, '<' ) ) {
	if ( ! function_exists( 'wp_smush_php_deprecated_notice' ) ) {
		function  wp_smush_php_deprecated_notice() {
			// Only show the deprecated notice for admin and only network side for MU site.
			if ( ! current_user_can( 'manage_options' ) || ( is_multisite() && ! is_network_admin() ) ) {
				return;
			}
			?>
			<div class="notice notice-error is-dismissible">
				<p>
					<?php
						printf(
							wp_kses( /* translators: %1$s - Requires PHP version - %2$s URL to an article about our hosting benefits. */
								__( 'Your site is running an outdated version of PHP that is no longer supported or receiving security updates. Please update PHP to at least version %1$s at your hosting provider in order to activate Smush, or consider switching to <a href="%2$s" target="_blank" rel="noopener noreferrer">WPMU DEV Hosting</a>.', 'wp-smushit' ),
								array(
									'a'      => array(
										'href'   => array(),
										'target' => array(),
										'rel'    => array(),
									),
									'strong' => array(),
								)
							),
							esc_html( WP_SMUSH_MIN_PHP_VERSION ),
							'https://wpmudev.com/hosting/'
						);
					?>
				</p>
			</div>
			<?php

			// Deactivate plugin.
			deactivate_plugins( WP_SMUSH_BASENAME, false, is_network_admin() );
		}
	}
	//add_action( 'admin_notices', 'wp_smush_php_deprecated_notice' );
	//add_action( 'network_admin_notices', 'wp_smush_php_deprecated_notice' );
	return;
}
/**
 * To support Smushing on staging sites like SiteGround staging where staging site urls are different
 * but redirects to main site url. Remove the protocols and www, and get the domain name.*
 * If Set to false, WP Smush switch backs to the Old Sync Optimisation.
 */
$site_url = str_replace( array( 'http://', 'https://', 'www.' ), '', site_url() );
// Compat with WPMU DEV staging.
$wpmu_host = isset( $_SERVER['WPMUDEV_HOSTING_ENV'] ) && 'staging' === sanitize_text_field( wp_unslash( $_SERVER['WPMUDEV_HOSTING_ENV'] ) );
if ( ! defined( 'WP_SMUSH_ASYNC' ) ) {
	if ( ( ! empty( $_SERVER['SERVER_NAME'] ) && 0 !== strpos( $site_url, sanitize_text_field( wp_unslash( $_SERVER['SERVER_NAME'] ) ) ) ) || $wpmu_host ) {
		define( 'WP_SMUSH_ASYNC', false );
	} else {
		define( 'WP_SMUSH_ASYNC', true );
	}
}

/**
 * If we are activating a version, while having another present and activated.
 * Leave in the Pro version, if it is available.
 *
 * @since 2.9.1
 */
if ( WP_SMUSH_BASENAME !== plugin_basename( __FILE__ ) ) {
	$pro_installed = false;
	if ( file_exists( WP_PLUGIN_DIR . '/wp-smush-pro/wp-smush.php' ) ) {
		$pro_installed = true;
	}

	if ( ! function_exists( 'is_plugin_active' ) ) {
		include_once ABSPATH . 'wp-admin/includes/plugin.php';
	}

	if ( is_plugin_active( 'wp-smush-pro/wp-smush.php' ) ) {
		deactivate_plugins( plugin_basename( __FILE__ ) );
		update_site_option( 'smush_deactivated', 1 );
		return; // Return to avoid errors with free-dashboard module.
	} elseif ( $pro_installed && is_plugin_active( WP_SMUSH_BASENAME ) ) {
		deactivate_plugins( WP_SMUSH_BASENAME );
		// If WordPress is already in the process of activating - return.
		if ( defined( 'WP_SANDBOX_SCRAPING' ) && WP_SANDBOX_SCRAPING ) {
			return;
		}
		activate_plugin( plugin_basename( __FILE__ ) );
	}
}

/* @noinspection PhpIncludeInspection */
require_once WP_SMUSH_DIR . 'core/class-installer.php';
register_activation_hook( __FILE__, array( 'Smush\\Core\\Installer', 'smush_activated' ) );
register_deactivation_hook( __FILE__, array( 'Smush\\Core\\Installer', 'smush_deactivated' ) );
add_action( 'activated_plugin', array( 'Smush\\Core\\Installer', 'redirect_to_setup_page' ) );

register_activation_hook( __FILE__, function () {
	update_option( 'wp-smush-plugin-activated', true );
} );

// Init the plugin and load the plugin instance for the first time.
add_action( 'plugins_loaded', array( 'WP_Smush', 'get_instance' ) );

if ( ! class_exists( 'WP_Smush' ) ) {
	/**
	 * Class WP_Smush
	 */
	final class WP_Smush {

		/**
		 * Plugin instance.
		 *
		 * @since 2.9.0
		 * @var null|WP_Smush
		 */
		private static $instance = null;

		/**
		 * Plugin core.
		 *
		 * @since 2.9.0
		 * @var Smush\Core\Core
		 */
		private $core;

		/**
		 * Plugin admin.
		 *
		 * @since 2.9.0
		 * @var Smush\App\Admin
		 */
		private $admin;

		/**
		 * Plugin API.
		 *
		 * @since 3.0
		 * @var Smush\Core\Api\Smush_API
		 */
		private $api = '';

		/**
		 * Media library UI.
		 *
		 * @since 3.4.0
		 * @var Smush\App\Media_Library
		 */
		private $library;

		/**
		 * @var Membership
		 */
		private static $membership;

		/**
		 * Return the plugin instance.
		 *
		 * @return WP_Smush
		 */
		public static function get_instance() {
			if ( ! self::$instance ) {
				self::$instance = new self();
			}

			return self::$instance;
		}

		/**
		 * WP_Smush constructor.
		 */
		private function __construct() {
			spl_autoload_register( array( $this, 'autoload' ) );

			/**
			 * Include vendor dependencies
			 */
			require_once __DIR__ . '/vendor_prefixed/custom-autoload.php';
			// Include the WP compatibility file.
			require_once WP_SMUSH_DIR . 'core/wp-compat.php';

			add_action( 'admin_init', array( '\\Smush\\Core\\Installer', 'upgrade_settings' ) );
			add_action( 'current_screen', array( '\\Smush\\Core\\Installer', 'maybe_create_table' ) );
			// We use priority 9 to avoid conflict with old free-dashboard module <= 2.0.4.
			add_action( 'admin_init', array( $this, 'register_free_modules' ), 9 );

			// The dash-notification actions are hooked into "init" with a priority of 10.
			add_action( 'init', array( $this, 'register_pro_modules' ), 5 );

			add_action( 'init', array( $this, 'do_plugin_activated_action' ) );

			add_action( 'init', array( $this, 'load_cross_sell_module' ), 5 );

			$this->init();
		}

		public static function is_pro() {
			return Membership::get_instance()->is_pro();
		}

		public function do_plugin_activated_action() {
			$transient_key = 'wp-smush-plugin-activated';
			if ( ! get_option( $transient_key ) ) {
				return;
			}

			( new Mutex( $transient_key ) )
				->set_break_on_timeout( true )
				->execute( function () use ( $transient_key ) {
					// The get_option call we made above has added the "true" value to the cache,
					// get_option is always going to return true even if the option was deleted in another thread,
					// now we need use a thread safe method instead
					$background_utils = new Background_Utils();
					if ( $background_utils->get_option( $transient_key, false ) ) {
						do_action( 'wp_smush_plugin_activated' );
						delete_option( $transient_key );
					}
				} );
		}

		/**
		 * Autoload method.
		 *
		 * @since 3.1.0
		 * @param string $class  Class name to autoload.
		 */
		public function autoload( $class ) {
			// Project-specific namespace prefix.
			$prefix = 'Smush\\';

			// Does the class use the namespace prefix?
			$len = strlen( $prefix );
			if ( 0 !== strncmp( $prefix, $class, $len ) ) {
				// Maybe require some external classes.
				$external_libs = array( 'WDEV_Logger' );
				if ( in_array( $class, $external_libs, true ) ) {
					$lib  = str_replace( '_', '-', strtolower( $class ) );
					$file = WP_SMUSH_DIR . "core/external/{$lib}/{$lib}.php";
					if ( file_exists( $file ) ) {
						require_once $file;
					}
				}
				// No, move to the next registered autoloader.
				return;
			}

			// Get namespace from the full class name.
			$namespace = substr( $class, 0, strrpos( $class, '\\' ) );

			// Get the relative class name.
			$relative_class = substr( $class, $len );

			$path = explode( '\\', strtolower( str_replace( '_', '-', $relative_class ) ) );
			$file = array_pop( $path );
			$file = WP_SMUSH_DIR . implode( '/', $path ) . '/class-' . $file . '.php';

			// If the file exists, require it.
			if ( file_exists( $file ) ) {
				/* @noinspection PhpIncludeInspection */
				require $file;
			} else if (
					in_array( $class, $this->shimmed(), true ) ||
					in_array( $namespace, $this->shimmed(), true )
			) {
				// Define a shim class inline to prevent errors.
				class_alias( '\\Smush\\Core\\Shim', $class );
			}
		}

		private function shimmed() {
			return array(
					'Smush\Core\LCP',
					'Smush\Core\CDN',
					'Smush\Core\Modules\CDN',
					'Smush\Core\Avif',
					'Smush\Core\Webp',
					'Smush\Core\Modules\WebP',
					'Smush\Core\Next_Gen',
					'Smush\Core\S3',
					'Smush\Core\Integrations\S3',
					'Smush\Core\Integrations\NextGen', // The class and the namespace are the same.
					'Smush\Core\Integrations\Nextgen',
					'Smush\Core\Png2Jpg',
					'Smush\Core\Modules\Png2jpg',
					'Smush\Core\Resize\Auto_Resizing_Controller',
					'Smush\Core\Resize\Auto_Resizing_Transform',
					'Smush\Core\Image_Dimensions',
			);
		}

		/**
		 * Init core module.
		 *
		 * @since 2.9.0
		 */
		private function init() {
			try {
				$this->api = new Smush\Core\Api\Smush_API( self::get_membership()->get_apikey() );
			} catch ( Exception $e ) {
				$this->api = '';
			}

			// Handle failed items, load it before validate the install.
			new Smush\Core\Error_Handler();

			self::get_membership()->validate_install();

			$this->core    = new Smush\Core\Core();
			$this->library = new Smush\App\Media_Library( $this->core() );
			if ( is_admin() ) {
				$this->library()->init_ui();
                $this->admin = new Smush\App\Admin( $this->library() );
			}

			if ( defined( 'WP_CLI' ) && WP_CLI ) {
				WP_CLI::add_command( 'smush', '\\Smush\\Core\\CLI\\CLI' );
			}
		}

		/**
		 * Get membership instance.
		 *
		 * @return Membership
		 */
		private static function get_membership() {
			if ( is_null( self::$membership ) ) {
				self::$membership = Membership::get_instance();
			}

			return self::$membership;
		}

		/**
		 * Getter method for core.
		 *
		 * @since 2.9.0
		 *
		 * @return Smush\Core\Core
		 */
		public function core() {
			return $this->core;
		}

		/**
		 * Getter method for core.
		 *
		 * @since 2.9.0
		 *
		 * @return Smush\App\Admin
		 */
		public function admin() {
			return $this->admin;
		}

		/**
		 * Getter method for core.
		 *
		 * @since 3.0
		 *
		 * @return Smush\Core\Api\Smush_API
		 */
		public function api() {
			return $this->api;
		}

		/**
		 * Getter method for library.
		 *
		 * @since 3.4.0
		 *
		 * @return Smush\App\Media_Library
		 */
		public function library() {
			return $this->library;
		}

		public static function is_expired() {
			_deprecated_function( __METHOD__, '3.23.5' );
		}

		public static function is_new_user() {
			_deprecated_function( __METHOD__, '3.23.5' );
		}

		/**
		 * Verify the site is connected to TFH.
		 *
		 * @since 3.12.0
		 *
		 * @return boolean
		 */
		public static function is_site_connected_to_tfh() {
			_deprecated_function( __METHOD__, '3.23.5' );
		}

		public static function is_member() {
			_deprecated_function( __METHOD__, '3.23.5' );
		}

		/**
		 * Register submodules.
		 * Only for wordpress.org members.
		 */
		public function register_free_modules() {
			if ( false === strpos( WP_SMUSH_DIR, 'wp-smushit' ) || class_exists( 'WPMUDEV_Dashboard' ) || file_exists( WP_PLUGIN_DIR . '/wpmudev-updates/update-notifications.php' ) ) {
				return;
			}

			/* @noinspection PhpIncludeInspection */
			require_once WP_SMUSH_DIR . 'core/external/plugin-notice/notice.php';

			// Recommended plugin notice.
			do_action(
				'wpmudev-recommended-plugins-register-notice',
				WP_SMUSH_BASENAME,
				__( 'Smush', 'wp-smushit' ),
				\Smush\App\Admin::$plugin_pages,
				array( 'before', '.sui-wrap .sui-floating-notices, .sui-wrap .sui-upgrade-page' )
			);
		}

		/**
		 * Appropriate menu position for cross-sell page based on multisite settings.
		 *
		 * For single sites, returns the default position (9).
		 * For multisite installations, calculates position based on network access settings.
		 *
		 */
		public function load_cross_sell_module() {
			if ( 1 ) {
				return;
			}

			$cross_sell_plugin_file = WP_SMUSH_DIR . 'core/external/plugins-cross-sell-page/plugin-cross-sell.php';
			if ( ! file_exists( $cross_sell_plugin_file ) ) {
				return;
			}

			static $cross_sell_handler = null;
			if ( ! is_null( $cross_sell_handler ) ) {
				return;
			}

			if ( ! class_exists( '\WPMUDEV\Modules\Plugin_Cross_Sell' ) ) {
				require_once $cross_sell_plugin_file;
			}

			$submenu_params = array(
				'slug'            => 'wp-smushit', // Required.
				'parent_slug'     => 'smush', // Required.
				'menu_slug'       => 'smush-cross-sell', // Optional - Strongly recommended to set in order to avoid admin page conflicts with other WPMU DEV plugins.
				'position'        => $this->cross_sell_module_menu_position(), // Optional – Usually a specific position will be required.
				'translation_dir' => WP_SMUSH_DIR . 'languages', // Optional – The directory where the translation files are located.
			);

			$cross_sell_handler = new \WPMUDEV\Modules\Plugin_Cross_Sell( $submenu_params );
		}

		/**
		 * Determines the menu position for the Cross-Sell module based on multisite and network access settings.
		 *
		 * @return int Menu position for the admin menu.
		 */
		public function cross_sell_module_menu_position() {
			$default_position = 6;

			// Return default position if not multisite
			if ( ! is_multisite() ) {
				return $default_position;
			}

			// Get network access settings
			$network_access = get_site_option( 'wp-smush-networkwide' );

			// Return default position if networkwide access is disabled
			if ( empty( $network_access ) || $network_access == 0 ) {
				return $default_position;
			}
			// Determine base position: 4 if enabled for all sites, 3 if custom list.
			$menu_position = ( 1 == $network_access ) ? 3 : 2;
			// Adjust position based on number of sites with access
			if ( is_array( $network_access ) ) {
				$menu_position += max( 0, 5 - count( $network_access ) );
			}

			return $menu_position;
		}

		/**
		 * Register sub-modules.
		 * Only for WPMU DEV Members.
		 */
		public function register_pro_modules() {
			if ( ! file_exists( WP_SMUSH_DIR . 'core/external/dash-notice/wpmudev-dash-notification.php' ) ) {
				return;
			}

			// Register items for the dashboard plugin.
			global $wpmudev_notices;
			$wpmudev_notices[] = array(
				'id'      => 912164,
				'name'    => 'WP Smush Pro',
				'screens' => array(
					'upload',
				),
			);

			/* @noinspection PhpIncludeInspection */
			require_once WP_SMUSH_DIR . 'core/external/dash-notice/wpmudev-dash-notification.php';
		}
	}
}