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| Dir : /home/trave494/misipress.com/wp-content/plugins/really-simple-ssl/security/firewall-manager.php |
<?php
defined('ABSPATH') or die();
class rsssl_firewall_manager {
private static $_this;
function __construct() {
if ( isset( self::$_this ) ) {
wp_die( sprintf( __( '%s is a singleton class and you cannot create a second instance.', 'really-simple-ssl' ), get_class( $this ) ) );
}
self::$_this = $this;
//trigger this action to force rules update
add_action( 'rsssl_update_rules', array($this, 'insert_advanced_header_file'), 10 );
add_action( 'rsssl_after_saved_fields', array($this, 'insert_advanced_header_file'), 100 );
add_action( 'rsssl_deactivate', array($this, 'remove_advanced_headers'), 20 );
add_filter( 'rsssl_notices', array($this, 'notices') );
}
static function this() {
return self::$_this;
}
/**
* 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"]) && $_GET["page"] === "really-simple-security" ) {
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", rand(1000, 999999999) );
}
return (int) get_site_option("rsssl_header_detection_nonce");
}
/**
* Generate security rules, and advanced-headers.php file
*
*/
public function insert_advanced_header_file() {
if ( !rsssl_user_can_manage() && !defined( 'RSSSL_LEARNING_MODE' ) ) {
return;
}
if ( wp_doing_ajax() ) {
return;
}
$use_dynamic_path = WP_CONTENT_DIR === ABSPATH . 'wp-content';
$advanced_headers_file = WP_CONTENT_DIR . '/advanced-headers.php';
$rules = apply_filters('rsssl_firewall_rules', '');
//no rules? remove the file
if ( empty(trim($rules) ) ) {
if ( file_exists($advanced_headers_file) ) {
unlink($advanced_headers_file);
}
return;
}
$contents = '<?php' . "\n";
$contents .= '/**' . "\n";
$contents .= '* This file is created by Really Simple SSL' . "\n";
$contents .= '*/' . "\n\n";
$contents .= "defined('ABSPATH') or die();" . "\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";
$contents .= "//RULES START\n".$rules;
// write to advanced-header.php file
if ( is_writable( WP_CONTENT_DIR ) ) {
file_put_contents( $advanced_headers_file, $contents );
}
$wpconfig_path = $this->find_wp_config_path();
$wpconfig = file_get_contents( $wpconfig_path );
if ( is_writable( $wpconfig_path ) && strpos( $wpconfig, 'advanced-headers.php' ) === false ) {
// 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.
if ( $use_dynamic_path ) {
$rule = 'if (file_exists( ABSPATH . "wp-content/advanced-headers.php")) {' . "\n";
$rule .= "\t" . 'require_once ABSPATH . "wp-content/advanced-headers.php";' . "\n" . '}';
} else {
$rule = 'if (file_exists(\'' . WP_CONTENT_DIR . '/advanced-headers.php\')) {' . "\n";
$rule .= "\t" . 'require_once \'' . WP_CONTENT_DIR . '/advanced-headers.php\';' . "\n" . '}';
}
//if RSSSL comment is found, insert after
$rsssl_comment = '//END Really Simple SSL Server variable fix';
if ( strpos($wpconfig, $rsssl_comment)!==false ) {
$pos = strrpos($wpconfig, $rsssl_comment);
$updated = substr_replace($wpconfig, $rsssl_comment."\n" . $rule . "\n", $pos, strlen($rsssl_comment));
} else {
$updated = preg_replace( '/' . '<\?php' . '/', '<?php' . "\n" . $rule . "\n", $wpconfig, 1 );
}
file_put_contents( $wpconfig_path, $updated );
}
//save errors
if ( is_writable( WP_CONTENT_DIR ) && (is_writable( $wpconfig_path ) || strpos( $wpconfig, 'advanced-headers.php' ) !== false ) ) {
update_option('rsssl_firewall_error', false, false );
} else {
if ( !is_writable( $wpconfig_path ) ) {
update_option('rsssl_firewall_error', 'wpconfig-notwritable', false );
} else if ( !is_writable( WP_CONTENT_DIR )) {
update_option('rsssl_firewall_error', 'advanced-headers-notwritable', false );
}
}
}
/**
* Get the status for the firewall rules writing
*
* @return false|string
*/
public function firewall_write_error(){
return get_site_option('rsssl_firewall_error');
}
/**
* Show some notices
* @param array $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' => [
'disable_http_methods',
]
);
return $notices;
}
/**
* Admin is not always loaded here, so we define our own function
* @return string|null
*/
public function find_wp_config_path()
{
//limit nr of iterations to 5
$i = 0;
$maxiterations = 5;
$dir = ABSPATH;
do {
$i++;
if (file_exists($dir . "/wp-config.php")) {
return $dir . "/wp-config.php";
}
} while (($dir = realpath("$dir/..")) && ($i < $maxiterations));
return null;
}
/**
* Clear the headers
* @return void
*/
public function remove_advanced_headers() {
if ( !rsssl_user_can_manage() ) {
return;
}
$file = ABSPATH . 'wp-content/advanced-headers.php';
$wpconfig_path = $this->find_wp_config_path();
if ( is_writable( $wpconfig_path ) ) {
$wpconfig = file_get_contents( $wpconfig_path );
$rule = "if ( file_exists('" . $file . "') ) { " . "\n";
$rule .= "\t" . "require_once '$file';" . "\n" . "}";
if ( strpos( $wpconfig, $rule ) !== false ) {
$updated_wpconfig = str_replace( $rule, '', $wpconfig );
file_put_contents( $wpconfig_path, $updated_wpconfig );
}
}
if ( file_exists( $file ) ) {
unlink( $file );
}
}
}