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<?php
/**
* Plugin Name: WP Engine System
* Plugin URI: https://wpengine.com/
* Description: WP Engine-specific services and options
* Author: WP Engine
* Version: 6.4.4
*
* @package wpengine/common-mu-plugin
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
// Our plugin.
define( 'WPE_PLUGIN_BASE', __FILE__ );
// Allow changing the version number in only one place (the header above).
$plugin_data = get_file_data( WPE_PLUGIN_BASE, array( 'Version' => 'Version' ) );
define( 'WPE_PLUGIN_VERSION', $plugin_data['Version'] );
require_once __DIR__ . '/wpengine-common/plugin.php';
require_once __DIR__ . '/wpengine-common/class-wp-abstraction.php';
require_once __DIR__ . '/wpengine-common/feature-flags/feature-flags.php';
// Actions to take once feature flags are loaded.
add_action( 'wpe_after_set_feature_flags', 'wpe_after_set_feature_flags' );
require_once __DIR__ . '/wpengine-common/wp-cli/class-wp-cli-abstraction-wrapper.php';
require_once __DIR__ . '/wpengine-common/wp-cli/interface-wp-cli-abstraction.php';
require_once __DIR__ . '/wpengine-common/wp-cli/class-wp-cli-enabled-abstraction.php';
require_once __DIR__ . '/wpengine-common/wp-cli/class-wp-cli-disabled-abstraction.php';
require_once __DIR__ . '/wpengine-common/wp-cli/class-wp-cli-multisite-cache-flush.php';
require_once __DIR__ . '/wpengine-common/class-wpe-available-updates.php';
require_once __DIR__ . '/wpengine-common/class-wpe-cache-manager.php';
require_once __DIR__ . '/wpengine-common/class-wpe-page-speed-boost.php';
require_once __DIR__ . '/wpengine-common/site-health.php';
require_once __DIR__ . '/wpengine-common/anonymize-user-agent.php';
require_once __DIR__ . '/wpengine-common/class-wpe-admin-ux.php';
$wpe_wp_abstraction = new \wpe\plugin\Wp_Abstraction();
$wpe_wp_cli_abstraction = \wpe\plugin\Wp_Cli_Abstraction_Wrapper::create_abstraction();
$wpe_psb = new \wpe\plugin\Wpe_Page_Speed_Boost();
$wpe_psb->init();
// Register filters for storing available updates in the database.
\wpe\plugin\Wpe_Available_Updates::get_instance();
if ( getenv( 'WPE_HEARTBEAT_AUTOSAVE_ONLY' ) === 'on' ) {
require_once __DIR__ . '/wpengine-common/class-wpe-heartbeat-throttle.php';
$heartbeat_throttle = new WPE_Heartbeat_Throttle();
$heartbeat_throttle->register();
}
// Force destroy login cookies if invalid, expired, etc.
// This prevents stale cookies (which never expire in the browser) from cache busting.
// This feature is controlled by an environment variable, but defaulted to on.
if ( getenv( 'WPENGINE_CLEAR_EXPIRED_COOKIES' ) !== 'off' ) {
require_once __DIR__ . '/wpengine-common/class-cookies.php';
\wpe\plugin\Cookies::register_hooks();
}
add_action( 'parse_request', 'wpesec_prevent_user_enumeration', 999 );
/**
* Prevent User Enumeration
*
* This function parses every requests and only allows the request to continue under certain conditions.
*/
function wpesec_prevent_user_enumeration() {
if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
return;
}
if ( is_admin() ) {
return;
}
if ( isset( $_SERVER['REQUEST_URI'] ) && 0 !== preg_match( '#wp-comments-post#', esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ) {
return;
}
// phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( ! isset( $_REQUEST['author'] ) ) {
return;
}
// phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( ! is_numeric( $_REQUEST['author'] ) ) {
return;
}
// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
error_log( 'preventing possible attempt to enumerate users' );
if ( ! headers_sent() ) {
header( 'HTTP/1.0 403 Forbidden' );
}
die;
}
// Enforce sanity checking on wp_sessions.
// This became a problem when EDD had a bug that had sessions expiring in the year 2058.
require_once __DIR__ . '/wpengine-common/class.sessionsanity.php';
$wpe_session_sanity = new \wpe\plugin\SessionSanity();
$wpe_session_sanity->register_hooks();
// Useful for multisite: Add a Site ID column to the Network Admin > Sites page.
if ( is_multisite() ) {
add_filter( 'wpmu_blogs_columns', 'wpe_site_id' );
/**
* Add or translate the site_id column
*
* @param array $columns An array of displayed site columns.
* @return array A array of displayed site columns which includes site_id.
*/
function wpe_site_id( $columns ) {
$columns['site_id'] = __( 'ID', 'site_id' );
return $columns;
}
add_action( 'manage_sites_custom_column', 'wpe_site_id_columns', 10, 3 );
// manage_blogs_custom_column hook deprecated in WP 5.1.
add_action( 'manage_blogs_custom_column', 'wpe_site_id_columns', 10, 3 );
/**
* Display subsite ID in site column
*
* @param string $column The name of the column to display.
* @param string $blog_id ID of the subsite.
*/
function wpe_site_id_columns( $column, $blog_id ) {
if ( 'site_id' === $column ) {
echo esc_attr( $blog_id );
}
}
}
// Temporary location for login-protection script.
// @TODO should be it's own plugin probably.
// Some user-plugins have site_filters that don't always persist the query args that we set in wpe_filter_site_url.
// So let's up our priority to 99 (default 10) so that our filter gets run later than the other plugin filters.
add_filter( 'site_url', 'wpe_filter_site_url', 99, 4 );
add_filter( 'network_site_url', 'wpe_filter_site_url', 99, 3 );
/**
* Filter the value returned for 'site_url'
*
* This function will only filter the url if it is the 'login_post' scheme. If
* not, then the value is unchanged
*
* @since 1.0
*
* @param string $url The unfiltered URL to return.
* @param string $path The relative path.
* @param string $scheme The scheme to use, such as http vs. https.
* @param int $blog_id The blog ID for the URL.
* @return string The new URL.
*/
function wpe_filter_site_url( $url, $path, $scheme, $blog_id = 1 ) {
// Filter the login_post scheme.
$changeme = array( 'login_post' );
if ( '4.4' === get_bloginfo( 'version' ) ) { // XXX possible regression in 4.4 release.
$changeme[] = 'login';
}
if ( in_array( $scheme, $changeme, true ) ) {
$url = add_query_arg( array( 'wpe-login' => 'true' ), $url );
} elseif ( '/wp-comments-post.php' === $path ) {
// Filter comment posts - from wp-includes/comment-template.php form action string.
$url = add_query_arg( array( 'wpe-comment-post' => PWP_NAME ), $url );
}
return $url;
}
if ( ! function_exists( 'current_action' ) ) :
/**
* Retrieve the name of the current action.
*
* This function was added in WordPress 3.9, but some sites
* are still running old versions of WordPress and therefore need
* us to define this function.
*
* The current_filter() function has been around for a long
* time (2.5) and so there shouldn't be any issue with calling
* that function.
*
* @uses current_filter()
*
* @return string Hook name of the current action.
*/
function current_action() {
return current_filter();
}
endif;
/**
* Disable core updates and emails.
*
* WP Engine handles WordPress updates. Due to our security setup auto-updates will fail anyway. Better to turn them
* off completely than to have site owners receive emails about a failed update.
*
* These filters are all set to a priority of 9999 so that we're more likely to get the last say in the matter.
*
* - 'auto_update_core' determines whether an auto update is even attempted at all.
* - 'auto_update_translation' determines whether to auto update language files.
* - 'auto_core_update_send_email' determines whether to send a "success", "fail", or "critical fail" email after
* an auto update is attempted. Setting this to false is a bit redundant after turning off auto-updates
* altogether, but we're just being sure.
* - 'send_core_update_notification_email' determines whether to alert a site admin that an update is available.
*/
add_filter( 'auto_update_core', '__return_false', 9999 );
add_filter( 'auto_update_translation', '__return_false', 9999 );
add_filter( 'auto_core_update_send_email', '__return_false', 9999 );
add_filter( 'send_core_update_notification_email', '__return_false', 9999 );
/**
* Don't Check for Background Updates during WordPress Site Health Check
*
* @param array $tests WordPress Site Health Check Tests.
* @return array modified WordPress Site Health Check Tests.
*/
function wpe_remove_update_check( $tests ) {
unset( $tests['async']['background_updates'] );
return $tests;
}
add_filter( 'site_status_tests', 'wpe_remove_update_check' );
/**
* Remote Cache Purge on Utility Object Cache Flush Operations
*
* When attempting to flush object cache via WP CLI on a utility node we need to purge object cache on webheads.
*
* This is intended to be used on cluster utility nodes that do not have direct access to memcached.
* We believe this workaround will no longer be necessary when CA-3151 is completed.
*/
\wpe\plugin\Wpe_Cache_Manager::add_action( $wpe_wp_abstraction, $wpe_wp_cli_abstraction );
$wpe_wp_cli_abstraction->add_command( 'multisite cache', 'wpe\plugin\Wp_Cli_Multisite_Cache_Flush' );
/**
* Actions to take after we know that the feature flags have been correctly
* loaded.
*
* @param array $flags The feature flags that have been loaded.
* @return void
*/
function wpe_after_set_feature_flags( $flags ) {
if ( wpe_show_update_provider_health_panel() ) {
// Update_Providers is a singleton, so we don't instantiate it here.
require_once __DIR__ . '/wpengine-common/update-providers/class-update-providers.php';
require_once __DIR__ . '/wpengine-common/update-providers/class-update-provider-health.php';
$wpe_update_provider_health = new wpe\plugin\update_providers\Update_Provider_Health();
}
}
