<?php
defined( 'ABSPATH' ) || die();
use RSSSL\Security\RSSSL_Htaccess_File_Manager;
use RSSSL\Pro\Security\WordPress\Rsssl_Geo_Block;
/**
* Class to handle the creation and include of the firewall
*/
class rsssl_firewall_manager {
/**
* Marker string for .htaccess rules related to auto prepend file.
*/
private const HTACCESS_MARKER_PREPEND = 'Really Simple Auto Prepend File';
/**
* Firewall object
*/
private static rsssl_firewall_manager $this;
/**
* The htaccess manager
*/
public RSSSL_Htaccess_File_Manager $htaccessManager;
/**
* File
*
* @var string
*/
private $file;
/**
* If we can use a dynamic path
*
* @var bool
*/
private $dynamic_path;
/**
* Path to the firewall.php file, filterable.
*
* @var string
*/
private string $firewall_file_path;
/**
* Rules to add to the firewall.
*
* @var string
*/
private $rules = '';
/**
* The WP_Filesystem instance, used for file operations.
*
*/
private $wp_filesystem;
public function __construct(RSSSL_Htaccess_File_Manager $htaccessManager) {
if ( isset( self::$this ) ) {
wp_die();
}
self::$this = $this;
$this->htaccessManager = $htaccessManager;
// Set dynamic path detection dynamically to handle environment changes
$this->dynamic_path = $this->get_dynamic_path();
// Determine firewall.php path, allowing custom content dir or fallback.
if ( $this->dynamic_path ) {
$wpContentPath = ABSPATH . 'wp-content/';
} else {
$wpContentPath = WP_CONTENT_DIR . '/';
}
$this->firewall_file_path = apply_filters(
'rsssl_firewall_file_path',
$wpContentPath . 'firewall.php'
);
// Set the file path dynamically so we can detect WP_CONTENT_DIR changes
$this->file = $this->get_advanced_headers_path();
// Keep firewall generation aligned with the shared rule rebuild lifecycle.
add_action( 'rsssl_update_advanced_headers', array( $this, 'update_advanced_headers' ), 10 );
add_action( 'rsssl_after_saved_fields', array( $this, 'install' ), 100 );
add_action( 'rsssl_deactivate', array( $this, 'uninstall' ), 20 );
add_filter( 'rsssl_htaccess_security_rules', array( $this, 'add_prepend_file_htaccess_rule' ), 5 );
// Proactively check for environment changes on admin loads
add_action( 'admin_init', array( $this, 'maybe_regenerate_firewall' ), 5 );
add_filter( 'rsssl_notices', array( $this, 'notices' ) );
// WP Rocket changes whether auto-prepend should stay in the shared root rule set.
add_action( 'rocket_activation', array( $this, 'queue_prepend_file_htaccess_removal' ) );
add_action( 'rocket_deactivation', array( $this, 'queue_prepend_file_htaccess_sync' ) );
if ( ! defined( 'RSSSL_IS_WP_ENGINE' ) ) {
define( 'RSSSL_IS_WP_ENGINE', isset( $_SERVER['IS_WPE'] ) );
}
if ( ! defined( 'RSSSL_IS_FLYWHEEL' ) ) {
define( 'RSSSL_IS_FLYWHEEL', isset( $_SERVER['SERVER_SOFTWARE'] ) && strpos( $_SERVER['SERVER_SOFTWARE'], 'Flywheel/' ) === 0 );
}
if ( ! defined( 'RSSSL_IS_PRESSABLE' ) ) {
define( 'RSSSL_IS_PRESSABLE', ( defined( 'IS_ATOMIC' ) && IS_ATOMIC ) || ( defined( 'IS_PRESSABLE' ) && IS_PRESSABLE ) );
}
}
/**
* Main installer for the firewall file
*
* @return void
*/
public function install(): void {
$this->sync_advanced_headers_state( true );
}
/**
* Refresh the advanced-headers / firewall files without directly queueing root `.htaccess` changes.
*
* This is used for advanced-headers-only updates such as CSP learning-mode writes where the file contents
* need to change but the shared `.htaccess` flow should not be touched.
*/
public function update_advanced_headers(): void {
$this->sync_advanced_headers_state( false );
}
/**
* Synchronize the advanced-headers bootstrap files and, when applicable, request a shared root `.htaccess` update.
*/
private function sync_advanced_headers_state( bool $maybe_queue_root_htaccess_update ): void {
// Don't regenerate files during deactivation
if ( doing_action( 'rsssl_deactivate' ) ) {
return;
}
if ( ! rsssl_admin_logged_in() ) {
return;
}
if ( wp_doing_ajax() ) {
return;
}
$this->rules = apply_filters( 'rsssl_firewall_rules', '' );
$has_rules = ! empty( trim( $this->rules ) );
// `true` means "keep the root prepend state aligned when applicable": queue removal when no rules remain,
// otherwise only queue a sync for an existing root `.htaccess` target outside `plugins_loaded`.
if ( ! $has_rules ) {
if ( $maybe_queue_root_htaccess_update ) {
$this->queue_prepend_file_htaccess_removal();
}
$this->remove_prepend_file_in_wp_config();
$this->remove_auto_prepend_file_in_user_ini();
return;
}
$this->update_firewall( $this->rules );
$this->include_prepend_file_in_wp_config();
$should_queue_root_htaccess_sync = $maybe_queue_root_htaccess_update
&& $this->has_root_htaccess_file()
&& current_filter() !== 'plugins_loaded';
if ( $should_queue_root_htaccess_sync ) {
// Avoid queueing the shared root sync during `plugins_loaded`
// later admin-side flows can request it when applicable.
$this->queue_prepend_file_htaccess_sync();
}
if ( $this->has_user_ini_file() ) {
$this->include_prepend_file_in_user_ini();
}
}
/**
* Remove file and file inclusions
*
* @return void
*/
public function uninstall(): void {
if ( ! rsssl_user_can_manage() ) {
return;
}
if ( wp_doing_ajax() ) {
return;
}
$this->remove_prepend_file_in_wp_config();
$this->remove_auto_prepend_file_in_user_ini();
$this->empty_file();
$this->delete_test_file();
// Delete firewall.php file using the existing handler
if ( class_exists( '\RSSSL\Pro\Security\WordPress\Firewall\Rsssl_Firewall_File_Handler' ) ) {
$firewall_handler = new \RSSSL\Pro\Security\WordPress\Firewall\Rsssl_Firewall_File_Handler();
$firewall_handler->delete();
}
}
/**
* Proactively check for environment changes on admin loads
* This ensures firewall regeneration after site clones/migrations
*
* @return void
*/
public function maybe_regenerate_firewall(): void {
if ( ! rsssl_user_can_manage() ) {
return;
}
// Only check if we have firewall rules that need to be active
if ( ! $this->has_rules() ) {
return;
}
// Only run the check if environment has changed
if ( $this->should_regenerate_firewall() ) {
// Trigger the full installation process for firewall.php
$this->install();
// Also generate the Geo Block firewall settings
$fireWallSettingIsEnabled = rsssl_get_option( 'enable_firewall', false );
if ( $fireWallSettingIsEnabled ) {
$geoBlock = Rsssl_Geo_Block::get_instance();
$geoBlock->generate_firewall_rules();
}
}
}
/**
* Check if our firewall file exists
*
* @param string $file // filename, including path
*
* @return bool
*/
private function file_exists( string $file ): bool {
$wp_filesystem = $this->get_file_system();
// Use WP Filesystem if available, otherwise fall back to direct operations
return $wp_filesystem ? $wp_filesystem->is_file( $file ) : file_exists( $file );
}
/**
* Get the WP_Filesystem instance with lazy loading
*
* @return false|WP_Filesystem_Base
*/
private function get_file_system() {
// Return cached instance if available
if ( $this->wp_filesystem !== null ) {
return $this->wp_filesystem;
}
if ( ! function_exists( 'WP_Filesystem' ) ) {
include_once ABSPATH . 'wp-admin/includes/file.php';
}
if ( false === ( $creds = request_filesystem_credentials( site_url(), '', false, false, null ) ) ) {
$this->wp_filesystem = false;
return false; // stop processing here.
}
global $wp_filesystem;
if ( ! WP_Filesystem( $creds ) ) {
// request_filesystem_credentials(site_url(), '', true, false, null);//phpcs:ingore
$this->wp_filesystem = false;
return false;
}
// Cache the instance
$this->wp_filesystem = $wp_filesystem;
return $wp_filesystem;
}
/**
* Update the file that contains the firewall rules, advanced-headers.php
*
* @param string $rules //rules to add to the firewall.
*
* @return void
*/
public function update_firewall( string $rules ): void
{
if ( ! rsssl_admin_logged_in() ) {
return;
}
$contents = '<?php' . "\n";
$contents .= '/**' . "\n";
$contents .= '* This file is created by Really Simple Security' . "\n";
$contents .= '*/' . "\n\n";
$contents .= 'if (defined("SHORTINIT") && SHORTINIT) return;' . "\n\n";
$contents .= '$base_path = dirname(__FILE__);' . "\n";
$contents .= 'if( file_exists( $base_path . "/rsssl-safe-mode.lock" ) ) {' . "\n";
$contents .= ' if ( ! defined( "RSSSL_SAFE_MODE" ) ) {' . "\n";
$contents .= ' define( "RSSSL_SAFE_MODE", true );' . "\n";
$contents .= ' }' . "\n";
$contents .= ' return;' . "\n";
$contents .= '}' . "\n\n";
// allow disabling of headers for detection purposes.
$contents .= 'if ( isset($_GET["rsssl_header_test"]) && (int) $_GET["rsssl_header_test"] === ' . $this->get_headers_nonce() . ' ) return;' . "\n\n";
//if already included at some point, don't execute again.
$contents .= 'if ( defined("RSSSL_HEADERS_ACTIVE" ) ) return;' . "\n";
$contents .= 'define( "RSSSL_HEADERS_ACTIVE", true );' . "\n";
// If the main firewall (firewall.php) is enabled, add the include directive for it.
if ( rsssl_get_option( 'enable_firewall', false ) ) {
$firewallFilePath = $this->firewall_file_path;
$contents .= 'if ( file_exists( "' . $firewallFilePath . '" ) ) {' . "\n";
$contents .= ' require_once "' . $firewallFilePath . '";' . "\n";
$contents .= '}' . "\n\n";
}
$contents .= "//RULES START\n" . $rules;
$this->put_contents( $this->file, $contents );
}
/**
* Save data
*
* @param string $file //filename, including path.
* @param string $contents //data to save.
*
* @return void
*/
private function put_contents( $file, $contents ): void {
if ( ! rsssl_admin_logged_in() ) {
return;
}
// Check if file is writable (or doesn't exist yet, which is fine)
if ( $this->file_exists( $file ) && ! $this->is_writable( $file ) ) {
return;
}
// Check if directory is writable before attempting to create new file
$directory = dirname( $file );
if ( ! $this->file_exists( $file ) && ! $this->is_writable( $directory ) ) {
return;
}
$wp_filesystem = $this->get_file_system();
if ( $wp_filesystem === false ) {
// Double-check directory writability before fallback to prevent PHP warnings
if ( ! is_writable( $directory ) ) {
return;
}
file_put_contents( $file, $contents );//phpcs:ignore
return;
}
$wp_filesystem->put_contents( $file, $contents );
// Only chmod files other than .htaccess and wp-config.php
if ( strpos($file, 'htaccess') === false && strpos($file, 'wp-config.php') === false ) {
$wp_filesystem->chmod( $file, 0644 );
}
}
/**
* Get the contents of a file
*
* @param string $file //filename, including path.
*
* @return string
*/
private function get_contents( string $file ): string {
// Validate that file path is not empty
if ( empty( $file ) ) {
return '';
}
$wp_filesystem = $this->get_file_system();
if ( $wp_filesystem === false ) {
return file_exists( $file ) ? file_get_contents( $file ) : '';//phpcs:ignore
}
$result = $wp_filesystem->get_contents( $file );
return $result ? $result : '';
}
/**
* Empty the advanced-headers.php file instead of deleting it.
* This prevents 500 errors when user.ini is cached and still references this file.
*
* @return void
*/
private function empty_file(): void {
if ( ! rsssl_user_can_manage() ) {
return;
}
$contents = <<<PHP
<?php
// This file was created by Really Simple Security
// It is no longer used and safe to delete
PHP;
$this->put_contents( $this->file, $contents );
}
/**
* Get the path to the advanced-headers-test.php file.
*
* @return string
*/
private function get_test_file_path(): string {
return WP_CONTENT_DIR . '/advanced-headers-test.php';
}
/**
* Delete the advanced-headers-test.php file if it exists.
*
* @return void
*/
private function delete_test_file(): void {
if ( ! rsssl_user_can_manage() ) {
return;
}
$test_file = $this->get_test_file_path();
if ( ! file_exists( $test_file ) ) {
return;
}
$wp_filesystem = $this->get_file_system();
if ( $wp_filesystem === false ) {
unlink( $test_file );//phpcs:ignore
return;
}
$wp_filesystem->delete( $test_file );
}
/**
* Get the home path
*
* @return string
*/
public function get_home_path(): string {
if ( ! function_exists( 'get_home_path' ) ) {
include_once ABSPATH . 'wp-admin/includes/file.php';
}
if ( defined('RSSSL_IS_FLYWHEEL') && RSSSL_IS_FLYWHEEL && isset( $_SERVER['DOCUMENT_ROOT'] ) ) {
return trailingslashit( $this->sanitize_path( wp_unslash( $_SERVER['DOCUMENT_ROOT'] ) ) );
}
return get_home_path();
}
/**
* Sanitize a path
*
* @param string $path //string to sanitize.
*
* @return string
*/
private function sanitize_path( $path ): string {
// prevent path traversal.
return str_replace( '../', '/', realpath( sanitize_text_field( $path ) ) );
}
/**
* Check whether the shared root `.htaccess` target already exists.
* The prepend rule can only be managed through the centralized root writer when there is a real file to update.
*
* @return bool
*/
private function has_root_htaccess_file(): bool {
return $this->file_exists( $this->htaccessManager->get_root_htaccess_target_path() );
}
/**
* Add the prepend rule to the centralized root .htaccess rule batch.
*
* @param array $rules
*
* @return array
*/
public function add_prepend_file_htaccess_rule( array $rules ): array
{
$rule = $this->get_root_htaccess_prepend_rule_definition();
if ( empty( $rule ) ) {
return $rules;
}
$rules[] = $rule;
return $rules;
}
/**
* Return the root-rule definition for the auto-prepend include when the file/config state is ready.
*/
private function get_root_htaccess_prepend_rule_definition(): array {
if ( $this->htaccessManager->determineExistingRootHtaccessFilePath() === '' ) {
return [];
}
if ( ! $this->file_exists( $this->file ) ) {
return [];
}
if ( ! $this->wp_config_contains_latest() ) {
return [];
}
return [
'identifier' => self::HTACCESS_MARKER_PREPEND,
'rules' => $this->build_prepend_file_htaccess_rules(),
];
}
/**
* Queue the centralized `.htaccess` writer so prepend inclusion follows the shared commit path.
*
* @return void
*/
public function queue_prepend_file_htaccess_sync(): void
{
if ( ! function_exists( 'rsssl_request_managed_htaccess_rebuild' ) ) {
return;
}
rsssl_request_managed_htaccess_rebuild();
}
/**
* Build the literal auto-prepend `.htaccess` lines, including any matching `user.ini` protection block.
*/
private function build_prepend_file_htaccess_rules() : string
{
if ( defined('RSSSL_HTACCESS_SKIP_AUTO_PREPEND') && RSSSL_HTACCESS_SKIP_AUTO_PREPEND ) {
return '';
}
if (isset(RSSSL()->server) ) {
$config = RSSSL()->server->auto_prepend_config();
} else {
$config = get_option('rsssl_auto_prepend_config');
if (empty($config)) {
return '';
}
}
$file = addcslashes($this->file, "'");
switch ($config) {
case 'litespeed':
$rules = array(
'<IfModule LiteSpeed>',
'php_value auto_prepend_file ' . $file ,
'</IfModule>',
'<IfModule lsapi_module>',
'php_value auto_prepend_file ' . $file,
'</IfModule>',
);
break;
case 'apache-mod_php':
default:
$rules = array(
'<IfModule mod_php7.c>',
'php_value auto_prepend_file ' . $file ,
'</IfModule>',
'<IfModule mod_php.c>',
'php_value auto_prepend_file ' . $file,
'</IfModule>',
);
}
$userIni = ini_get('user_ini.filename');
if ($userIni) {
array_push(
$rules,
sprintf( '<Files "%s">',
addcslashes( $userIni, '"' ) ),
'<IfModule mod_authz_core.c>',
'Require all denied', '</IfModule>',
'<IfModule !mod_authz_core.c>',
'Order deny,allow', 'Deny from all',
'</IfModule>',
'</Files>'
);
}
return implode( "\n", $rules );
}
/**
* Include the file in the wp-config
*
* @return void
*/
private function include_prepend_file_in_wp_config(): void {
if ( ! rsssl_user_can_manage() ) {
return;
}
$file = $this->wpconfig_path();
if ( empty( $file ) ) {
update_option( 'rsssl_firewall_error', 'wpconfig-notfound', false );
return;
}
$content = $this->get_contents( $file );
if ( strpos( $content, 'advanced-headers.php' ) === false ) {
$rule = $this->get_wp_config_rule();
// if RSSSL comment is found, insert after.
$rsssl_comment = '//END Really Simple Security Server variable fix';
if ( strpos( $content, $rsssl_comment ) !== false ) {
$pos = strrpos( $content, $rsssl_comment );
$updated = substr_replace( $content, $rsssl_comment . "\n" . $rule . "\n", $pos, strlen( $rsssl_comment ) );
} else {
$updated = preg_replace( '/<\?php/', "<?php\n" . $rule . "\n", $content, 1 );
}
if ( strpos( $updated, "\n\n\n" ) !== false ) {
$updated = str_replace( "\n\n\n", "\n\n", $updated );
}
$this->put_contents( $file, $updated );
}
// save errors.
if ( $this->is_writable( WP_CONTENT_DIR ) && ( $this->is_writable( $file ) || strpos( $content, 'advanced-headers.php' ) !== false ) ) {
update_option( 'rsssl_firewall_error', false, false );
} elseif ( ! $this->is_writable( $file ) ) {
update_option( 'rsssl_firewall_error', 'wpconfig-notwritable', false );
} elseif ( ! $this->is_writable( WP_CONTENT_DIR ) ) {
update_option( 'rsssl_firewall_error', 'advanced-headers-notwritable', false );
}
}
/**
* Queue the centralized `.htaccess` writer so the prepend block is removed through the shared commit path.
*
* @return void
*/
public function queue_prepend_file_htaccess_removal(): void
{
if ( ! function_exists( 'rsssl_request_managed_htaccess_rebuild' ) ) {
return;
}
rsssl_request_managed_htaccess_rebuild();
}
/**
* Remove the prepend file from the config
*
* @return void
*/
private function remove_prepend_file_in_wp_config(): void {
if ( ! rsssl_user_can_manage() ) {
return;
}
$file = $this->wpconfig_path();
if ( empty( $file ) ) {
return;
}
if ( $this->is_writable( $file ) ) {
$content = $this->get_contents( $file );
$rule = $this->get_wp_config_rule();
if ( strpos( $content, $rule ) !== false ) {
$content = str_replace( $rule, '', $content );
if ( strpos( $content, "\n\n\n" ) !== false ) {
$content = str_replace( "\n\n\n", "\n\n", $content );
}
$this->put_contents( $file, $content );
}
}
}
/**
* Wrapper function
*
* @param string $file // filename, including path.
*
* @return bool
*/
private function is_writable( $file ): bool {
$wp_filesystem = $this->get_file_system();
// Use WP Filesystem if available, otherwise fall back to direct operations
return $wp_filesystem ? $wp_filesystem->is_writable( $file ) : is_writable( $file );//phpcs:ignore
}
/**
* This class has it's own settings page, to ensure it can always be called
*
* @return bool
*/
public function is_settings_page() {
if ( rsssl_is_logged_in_rest() ) {
return true;
}
if ( isset( $_GET['page'] ) && 'really-simple-security' === $_GET['page'] ) {//phpcs:ignore
return true;
}
return false;
}
/**
* Generate and return a random nonce
*
* @return int
*/
public function get_headers_nonce() {
if ( ! get_site_option( 'rsssl_header_detection_nonce' ) ) {
update_site_option( 'rsssl_header_detection_nonce', wp_rand( 1000, 999999999 ) );
}
return (int) get_site_option( 'rsssl_header_detection_nonce' );
}
/**
* Check if any rules were added
*
* @return bool
*/
public function has_rules() {
$this->rules = apply_filters( 'rsssl_firewall_rules', '' );
return ! empty( trim( $this->rules ) );
}
/**
* Get the status for the firewall rules writing
*
* @return false|string
*/
public function firewall_write_error() {
return get_site_option( 'rsssl_firewall_error' );
}
/**
* Get the status for the firewall
*
* @return bool
*/
public function firewall_active_error() {
if ( ! $this->has_rules() ) {
return false;
}
return ! defined( 'RSSSL_HEADERS_ACTIVE' );
}
/**
* Show some notices
*
* @param array $notices //array of notices.
*
* @return array
*/
public function notices( $notices ) {
$notices['firewall-error'] = array(
'callback' => 'RSSSL_SECURITY()->firewall_manager->firewall_write_error',
'score' => 5,
'output' => array(
'wpconfig-notwritable' => array(
'title' => __( 'Firewall', 'really-simple-ssl' ),
'msg' => __( 'A firewall rule was enabled, but the wp-config.php is not writable.', 'really-simple-ssl' ) . ' ' . __( 'Please set the wp-config.php to writable until the rule has been written.', 'really-simple-ssl' ),
'icon' => 'open',
'dismissible' => true,
),
'advanced-headers-notwritable' => array(
'title' => __( 'Firewall', 'really-simple-ssl' ),
'msg' => __( 'A firewall rule was enabled, but /the wp-content/ folder is not writable.', 'really-simple-ssl' ) . ' ' . __( 'Please set the wp-content folder to writable:', 'really-simple-ssl' ),
'icon' => 'open',
'dismissible' => true,
),
),
'show_with_options' => array(
'disable_http_methods',
),
);
$notices['firewall-active'] = array(
'condition' => array( 'RSSSL_SECURITY()->firewall_manager->firewall_active_error' ),
'callback' => '_true_',
'score' => 5,
'output' => array(
'true' => array(
'title' => __( 'Firewall', 'really-simple-ssl' ),
'msg' => __( 'A firewall rule was enabled, but the firewall does not seem to get loaded correctly.', 'really-simple-ssl' ) . ' ' . __( 'Please check if the advanced-headers.php file is included in the wp-config.php, and exists in the wp-content folder.', 'really-simple-ssl' ),
'icon' => 'open',
'dismissible' => true,
),
),
'show_with_options' => array(
'disable_http_methods',
),
);
return $notices;
}
/**
* // As WP_CONTENT_DIR is not defined at this point in the wp-config, we can't use that.
* // for those setups where the WP_CONTENT_DIR is not in the default location, we hardcode the path.
*
* @return string
*/
public function get_wp_config_rule() {
if ( $this->dynamic_path ) {
$rule = 'if (!defined("RSSSL_HEADERS_ACTIVE") && file_exists( ABSPATH . "wp-content/advanced-headers.php")) {' . "\n";
$rule .= "\t" . 'require_once ABSPATH . "wp-content/advanced-headers.php";' . "\n" . '}';
} else {
$rule = 'if (!defined("RSSSL_HEADERS_ACTIVE") && file_exists(\'' . WP_CONTENT_DIR . '/advanced-headers.php\')) {' . "\n";
$rule .= "\t" . 'require_once \'' . WP_CONTENT_DIR . '/advanced-headers.php\';' . "\n" . '}';
}
return $rule;
}
/**
* Check if the wp-config contains the if constant condition, to prevent duplicate loading. If not, try upgrading. If that fails, skip.
* Wrapper function added for clearer purpose in code
*
* @return bool
*/
private function wp_config_contains_latest(): bool {
return $this->update_wp_config_rule();
}
/**
* Called in upgrade.php, to upgrade older rules to the latest.
* Returns true if the wpconfig contains the upgraded lines
*
* @return bool
*/
public function update_wp_config_rule(): bool {
$file = $this->wpconfig_path();
if ( ! $file ) {
return false;
}
$content = $this->get_contents( $file );
$find = '(file_exists( ABSPATH . "wp-content/advanced-headers.php"))';
if ( false !== strpos( $content, $find ) ) {
if ( ! $this->is_writable( $file ) ) {
return false;
}
$replace = '(!defined("RSSSL_HEADERS_ACTIVE") && file_exists( ABSPATH . "wp-content/advanced-headers.php"))';
$content = str_replace( $find, $replace, $content );
$this->put_contents( $file, $content );
}
return true;
}
/**
* Admin is not always loaded here, so we define our own function
*
* @return string|null
*/
public function wpconfig_path() {
// Allow the wp-config.php path to be overridden via a filter.
$filtered_path = apply_filters( 'rsssl_wpconfig_path', '' );
// If a filtered path is provided, validate it.
if ( ! empty( $filtered_path ) ) {
$directory = dirname( $filtered_path );
// Ensure the directory exists before checking for the file.
if ( is_dir( $directory ) && $this->file_exists( $filtered_path ) ) {
return $filtered_path;
}
}
// Limit number of iterations to 5.
$i = 0;
$maxiterations = 5;
$dir = ABSPATH;
do {
++ $i;
if ( $this->file_exists( $dir . 'wp-config.php' ) ) {
return $dir . 'wp-config.php';
}
} while ( ( $dir = realpath( "$dir/.." ) ) && ( $i < $maxiterations ) );//phpcs:ignore
return '';
}
/**
* Clear the headers
*
* @return void
*/
public function remove_advanced_headers() {
$this->uninstall();
}
/**
* Check if the firewall file should be regenerated
* This detects environment changes like WP Engine clones
* Also returns true if the file does not exist yet
*
* @return bool
*/
private function should_regenerate_firewall(): bool {
if ( ! $this->file_exists( $this->file ) ) {
return true;
}
// Check if we have stored environment signature
$stored_signature = get_option( 'rsssl_firewall_environment_signature' );
$current_signature = $this->get_environment_signature();
// If no stored signature, store it and regenerate
if ( ! $stored_signature ) {
update_option( 'rsssl_firewall_environment_signature', $current_signature, false );
return true;
}
// If signature changed, update it and regenerate
if ( $stored_signature !== $current_signature ) {
update_option( 'rsssl_firewall_environment_signature', $current_signature, false );
return true;
}
return false;
}
/**
* Generate a signature of the current environment
* Used to detect when the site has been cloned or migrated
*
* @return string
*/
private function get_environment_signature(): string {
$signature_parts = array(
WP_CONTENT_DIR,
ABSPATH,
get_home_url(),
get_site_url(),
);
return md5( implode( '|', $signature_parts ) );
}
/**
* Get the advanced headers file path
* Always uses WP_CONTENT_DIR which is dynamically set by WordPress
*
* @return string
*/
private function get_advanced_headers_path(): string {
return WP_CONTENT_DIR . '/advanced-headers.php';
}
/**
* Check if we can use a dynamic path for the advanced headers file
* @return string
*/
private function get_dynamic_path(): string {
return WP_CONTENT_DIR === ABSPATH . 'wp-content';
}
/**
* Check if a user.ini file exists or is in user.
*
* @return bool
*/
private function has_user_ini_file():bool {
$userIni = ini_get('user_ini.filename');
if ( $userIni ) {
return true;
}
return false;
}
/**
* Add auto prepend file to user.ini
*
* @return void
*/
private function include_prepend_file_in_user_ini():void{
if ( ! rsssl_user_can_manage() ) {
return;
}
if ( defined('RSSSL_HTACCESS_SKIP_AUTO_PREPEND') && RSSSL_HTACCESS_SKIP_AUTO_PREPEND ) {
return;
}
$config = RSSSL()->server->auto_prepend_config();
if ( !$this->has_user_ini_file() ) {
return;
}
$autoPrependIni = '';
$userIniPath = $this->get_user_ini_path();
if ( empty( $userIniPath ) ) {
return;
}
// .user.ini configuration
switch ($config) {
case 'cgi':
case 'nginx':
case 'apache-suphp':
case 'litespeed':
case 'iis':
$autoPrependIni = sprintf("; BEGIN Really Simple Auto Prepend File
auto_prepend_file = '%s'
; END Really Simple Auto Prepend File", addcslashes($this->file, "'"));
break;
}
if ( empty( $autoPrependIni ) ) {
return;
}
$userIniContent = $this->get_contents( $userIniPath );
$updatedUserIniContent = $autoPrependIni;
if ( $userIniContent !== '' ) {
$updatedUserIniContent = str_replace( 'auto_prepend_file', ';auto_prepend_file', $userIniContent );
$regex = '/; BEGIN Really Simple Auto Prepend File.*?; END Really Simple Auto Prepend File/is';
if ( preg_match( $regex, $updatedUserIniContent ) === 1 ) {
$replacement = preg_replace( $regex, $autoPrependIni, $updatedUserIniContent );
if ( ! is_string( $replacement ) ) {
return;
}
$updatedUserIniContent = $replacement;
} else {
$updatedUserIniContent .= "\n" . $autoPrependIni;
}
}
if ( $updatedUserIniContent === $userIniContent ) {
return;
}
$this->put_contents( $userIniPath, $updatedUserIniContent );
}
/**
* Get the user.ini path
*
* @return false|string
*/
public function get_user_ini_path() {
$userIni = ini_get('user_ini.filename');
if ($userIni) {
return $this->get_home_path() . $userIni;
}
return false;
}
/**
* Remove the added auto prepend file
*
* @return void
*/
private function remove_auto_prepend_file_in_user_ini() {
if ( ! rsssl_user_can_manage() ) {
return;
}
if ( ! $this->has_user_ini_file() ) {
return;
}
$userIniPath = $this->get_user_ini_path();
if ( empty( $userIniPath ) ) {
return;
}
$userIniContent = $this->get_contents( $userIniPath );
$updatedUserIniContent = preg_replace(
'/; BEGIN Really Simple Auto Prepend File.*?; END Really Simple Auto Prepend File/is',
'',
$userIniContent
);
if ( ! is_string( $updatedUserIniContent ) ) {
return;
}
$updatedUserIniContent = str_replace( 'auto_prepend_file', ';auto_prepend_file', $updatedUserIniContent );
if ( $updatedUserIniContent === $userIniContent ) {
return;
}
$this->put_contents( $userIniPath, $updatedUserIniContent );
}
}