%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
defined( 'ABSPATH' ) or die( );
/**
* Back-end available only
*/
if ( !function_exists('rsssl_do_fix')) {
/**
* Complete a fix for an issue, either user triggered, or automatic
*
* @param $fix
*
* @return void
*/
function rsssl_do_fix( $fix ) {
if ( ! rsssl_user_can_manage() ) {
return;
}
if ( ! rsssl_has_fix( $fix ) && function_exists( $fix ) ) {
$completed[] = $fix;
$fix();
$completed = get_option( 'rsssl_completed_fixes', [] );
$completed[] = $fix;
update_option( 'rsssl_completed_fixes', $completed );
} else if ( $fix && ! function_exists( $fix ) ) {
}
}
}
if ( !function_exists('rsssl_has_fix')) {
/**
* Check if this has been fixed already
*
* @param $fix
*
* @return bool
*/
function rsssl_has_fix( $fix ) {
$completed = get_option( 'rsssl_completed_fixes', [] );
if ( ! in_array( $fix, $completed ) ) {
return false;
}
return true;
}
}
if ( !function_exists('rsssl_admin_url')) {
/**
* Get admin url, adjusted for multisite
* @param array $args //query args
* @param string $path //hash slug for the settings pages (e.g. #dashboard)
* @return string
*/
function rsssl_admin_url(array $args = [], string $path = ''): string {
$url = is_multisite() ? network_admin_url('admin.php') : admin_url('admin.php');
$args = wp_parse_args($args, ['page' => 'really-simple-security']);
return add_query_arg($args, $url) . $path;
}
}
if ( !function_exists('rsssl_maybe_clear_transients')) {
/**
* If the corresponding setting has been changed, clear the test cache and re-run it.
*
* @return void
*/
function rsssl_maybe_clear_transients( $field_id, $field_value, $prev_value, $field_type ) {
if ( $field_id === 'mixed_content_fixer' && $field_value ) {
delete_transient( 'rsssl_mixed_content_fixer_detected' );
RSSSL()->admin->mixed_content_fixer_detected();
}
//expire in five minutes
$headers = get_transient('rsssl_can_use_curl_headers_check');
set_transient('rsssl_can_use_curl_headers_check', $headers, 5 * MINUTE_IN_SECONDS);
//no change
if ( $field_value === $prev_value ) {
return;
}
if ( $field_id === 'disable_http_methods' ) {
delete_option( 'rsssl_http_methods_allowed' );
rsssl_http_methods_allowed();
}
if ( $field_id === 'xmlrpc' ) {
delete_transient( 'rsssl_xmlrpc_allowed' );
rsssl_xmlrpc_allowed();
}
if ( $field_id === 'disable_indexing' ) {
delete_transient( 'rsssl_directory_indexing_status' );
rsssl_directory_indexing_allowed();
}
if ( $field_id === 'block_code_execution_uploads' ) {
delete_transient( 'rsssl_code_execution_allowed_status' );
rsssl_code_execution_allowed();
}
if ( $field_id === 'hide_wordpress_version' ) {
delete_option( 'rsssl_wp_version_detected' );
rsssl_src_contains_wp_version();
}
if ( $field_id === 'rename_admin_user' ) {
delete_transient('rsssl_admin_user_count');
rsssl_has_admin_user();
}
}
add_action( "rsssl_after_save_field", 'rsssl_maybe_clear_transients', 100, 4 );
}
if ( !function_exists('rsssl_remove_htaccess_security_edits') ) {
/**
* Clean up on deactivation
*
* @return void
*/
function rsssl_remove_htaccess_security_edits() {
if ( ! rsssl_user_can_manage() ) {
return;
}
if ( ! rsssl_uses_htaccess() ) {
return;
}
$htaccess_file = RSSSL()->admin->htaccess_file();
if ( ! file_exists( $htaccess_file ) ) {
return;
}
$start = "\n" . '#Begin Really Simple Security';
$end = '#End Really Simple Security' . "\n";
$pattern = '/'.$start.'(.*?)'.$end.'/is';
/**
* htaccess in uploads dir
*/
$upload_dir = wp_get_upload_dir();
$htaccess_file_uploads = trailingslashit( $upload_dir['basedir']).'.htaccess';
$content_htaccess_uploads = file_exists($htaccess_file_uploads ) ? file_get_contents($htaccess_file_uploads) : '';
if (preg_match($pattern, $content_htaccess_uploads) && is_writable( $htaccess_file_uploads )) {
$content_htaccess_uploads = preg_replace($pattern, "", $content_htaccess_uploads);
file_put_contents( $htaccess_file_uploads, $content_htaccess_uploads );
}
/**
* htaccess in root dir
*/
$htaccess_file = RSSSL()->admin->htaccess_file();
$content_htaccess = file_get_contents($htaccess_file);
//remove old style rules
$pattern_1 = "/#\s?BEGIN\s?rlrssslReallySimpleSSL.*?#\s?END\s?rlrssslReallySimpleSSL/s";
$pattern_2 = "/#\s?BEGIN\s?Really Simple Security Redirect.*?#\s?END\s?Really Simple Security Redirect/s";
$content_htaccess = preg_replace([$pattern_1, $pattern_2], "", $content_htaccess);
if (preg_match($pattern, $content_htaccess) && is_writable( $htaccess_file ) ) {
$content_htaccess = preg_replace($pattern, "", $content_htaccess);
file_put_contents( $htaccess_file, $content_htaccess );
}
}
}
/**
* Wrap the security headers
*/
if ( ! function_exists('rsssl_wrap_htaccess' ) ) {
function rsssl_wrap_htaccess() {
if ( !rsssl_user_can_manage() ) {
return;
}
if ( ! rsssl_uses_htaccess() ) {
return;
}
if ( rsssl_get_option('do_not_edit_htaccess') ) {
if ( !empty( get_site_option('rsssl_htaccess_error') ) ) {
delete_site_option( 'rsssl_htaccess_error' );
delete_site_option( 'rsssl_htaccess_rules' );
}
return;
}
if (
!rsssl_is_logged_in_rest() &&
!RSSSL()->admin->is_settings_page() &&
current_filter() !== 'rocket_activation' &&
current_filter() !== 'rocket_deactivation'
) {
return;
}
if ( get_site_option('rsssl_htaccess_error') ) {
delete_site_option( 'rsssl_htaccess_error' );
delete_site_option( 'rsssl_htaccess_rules' );
}
if ( get_site_option('rsssl_uploads_htaccess_error') ) {
delete_site_option( 'rsssl_uploads_htaccess_error' );
delete_site_option( 'rsssl_uploads_htaccess_rules' );
}
if ( get_option('rsssl_updating_htaccess') ) {
return;
}
update_option('rsssl_updating_htaccess', true, false );
$start = '#Begin Really Simple Security';
$end = "\n" . '#End Really Simple Security' . "\n";
$pattern_content = '/'.$start.'(.*?)'.$end.'/is';
$pattern = '/'.$start.'.*?'.$end.'/is';
/**
* htaccess in uploads dir
*/
$rules_uploads = apply_filters( 'rsssl_htaccess_security_rules_uploads', []);
$upload_dir = wp_get_upload_dir();
$htaccess_file_uploads = trailingslashit( $upload_dir['basedir']).'.htaccess';
if ( ! file_exists( $htaccess_file_uploads ) && count($rules_uploads)>0 ) {
if ( is_writable(trailingslashit( $upload_dir['basedir'])) ) {
file_put_contents($htaccess_file_uploads, '');
} else {
update_site_option( 'rsssl_uploads_htaccess_error', 'not-writable' );
$rules_uploads_result = implode( '', array_column( $rules_uploads, 'rules' ) );
update_site_option( 'rsssl_uploads_htaccess_rules', $rules_uploads_result );
}
}
if ( file_exists( $htaccess_file_uploads ) ) {
$content_htaccess_uploads = file_exists( $htaccess_file_uploads ) ? file_get_contents( $htaccess_file_uploads ) : '';
preg_match( $pattern_content, $content_htaccess_uploads, $matches );
if ( ( ! empty( $matches[1] ) && empty( $rules_uploads ) ) || ! empty( $rules_uploads ) ) {
$rules_uploads_result = '';
foreach ( $rules_uploads as $rule_uploads ) {
//check if the rule exists outside RSSSL, but not within
if ( strpos($content_htaccess_uploads, $rule_uploads['identifier'])!==false && !preg_match('/#Begin Really Simple Security.*?('.preg_quote($rule_uploads['identifier'],'/').').*?#End Really Simple Security/is', $content_htaccess_uploads, $matches) ) {
continue;
}
$rules_uploads_result .= $rule_uploads['rules'];
}
//We differ between missing rules, and a complete set. As we don't want the replace all rules with just the missing set.
//should replace if rules is not empty, OR if rules is empty and htaccess is not.
$htaccess_has_rsssl_rules = preg_match( '/#Begin Really Simple Security(.*?)#End Really Simple Security/is', $content_htaccess_uploads, $matches);
if ( ! empty( $rules_uploads_result ) || $htaccess_has_rsssl_rules ) {
if ( ! file_exists( $htaccess_file_uploads ) ) {
file_put_contents( $htaccess_file_uploads, '' );
}
$new_rules = empty($rules_uploads_result) ? '' : $start . $rules_uploads_result . $end;
if ( ! is_writable( $htaccess_file_uploads ) ) {
update_site_option( 'rsssl_uploads_htaccess_error', 'not-writable' );
update_site_option( 'rsssl_uploads_htaccess_rules', $rules_uploads_result );
} else {
delete_site_option( 'rsssl_uploads_htaccess_error' );
delete_site_option( 'rsssl_uploads_htaccess_rules' );
//remove current rules
$content_htaccess_uploads = preg_replace( $pattern, '', $content_htaccess_uploads );
//add rules as new block
$new_htaccess = $content_htaccess_uploads . "\n" . $new_rules;
#clean up
if (strpos($new_htaccess, "\n" ."\n" . "\n" )!==false) {
$new_htaccess = str_replace("\n" . "\n" . "\n", "\n" ."\n", $new_htaccess);
}
file_put_contents( $htaccess_file_uploads, $new_htaccess );
}
}
}
}
/**
* htaccess in root dir
*/
$rules = apply_filters( 'rsssl_htaccess_security_rules', [] );
$htaccess_file = RSSSL()->admin->htaccess_file();
if ( !file_exists( $htaccess_file ) && count($rules)>0 ) {
update_site_option('rsssl_htaccess_error', 'not-exists');
$rules_result = implode('',array_column($rules, 'rules'));
update_site_option('rsssl_htaccess_rules', $rules_result);
}
if ( file_exists( $htaccess_file ) ) {
$content_htaccess = file_get_contents( $htaccess_file );
//remove old style rules
//we do this beforehand, so we don't accidentally assume redirects are already in place
$content_htaccess = preg_replace(
[
"/#\s?BEGIN\s?rlrssslReallySimpleSSL.*?#\s?END\s?rlrssslReallySimpleSSL/s",
"/#\s?BEGIN\s?Really Simple Security Redirect.*?#\s?END\s?Really Simple Security Redirect/s"
], "", $content_htaccess);
preg_match( $pattern_content, $content_htaccess, $matches );
if ( ( ! empty( $matches[1] ) && empty( $rules ) ) || ! empty( $rules ) ) {
$rules_result = '';
foreach ( $rules as $rule ) {
//check if the rule exists outside RSSSL, but not within
if ( strpos($content_htaccess, $rule['identifier'])!==false && !preg_match('/#Begin Really Simple Security.*?('.preg_quote($rule['identifier'],'/').').*?#End Really Simple Security/is', $content_htaccess, $matches) ) {
continue;
}
$rules_result .= $rule['rules'];
}
//should replace if rules is not empty, OR if rules is empty and htaccess is not.
$htaccess_has_rsssl_rules = preg_match( '/#Begin Really Simple Security(.*?)#End Really Simple Security/is', $content_htaccess, $matches );
if ( ! empty( $rules_result ) || $htaccess_has_rsssl_rules ) {
if ( ! is_writable( $htaccess_file ) ) {
update_site_option( 'rsssl_htaccess_error', 'not-writable' );
update_site_option( 'rsssl_htaccess_rules', get_site_option( 'rsssl_htaccess_rules' ) . $rules_result );
} else {
delete_site_option( 'rsssl_htaccess_error' );
delete_site_option( 'rsssl_htaccess_rules' );
$new_rules = empty($rules_result) ? '' : $start . $rules_result . $end;
//remove current rules
$content_htaccess = preg_replace( $pattern, '', $content_htaccess );
//add rules as new block
if ( strpos($content_htaccess, '# BEGIN WordPress')!==false ) {
$new_htaccess = str_replace('# BEGIN WordPress', "\n" . $new_rules.'# BEGIN WordPress', $content_htaccess);
} else {
$new_htaccess = "\n" . $new_rules . $content_htaccess;
}
#clean up
if (strpos($new_htaccess, "\n" ."\n" . "\n" )!==false) {
$new_htaccess = str_replace("\n" . "\n" . "\n", "\n" ."\n", $new_htaccess);
}
file_put_contents( $htaccess_file, $new_htaccess );
}
}
}
}
delete_option('rsssl_updating_htaccess');
}
add_action('admin_init', 'rsssl_wrap_htaccess' );
add_action('rsssl_after_saved_fields', 'rsssl_wrap_htaccess', 30);
}
/**
* Store warning blocks for later use in the mailer
*
* @param array $changed_fields
*
* @return void
*/
function rsssl_gather_warning_blocks_for_mail( array $changed_fields ){
if (!rsssl_user_can_manage() ) {
return;
}
if ( !rsssl_get_option('send_notifications_email') ) {
return;
}
$fields = array_filter($changed_fields, static function($field) {
// Check if email_condition exists and call the function, else assume true
if ( !isset($field['email']['condition']) ) {
$email_condition_result = true;
} else if (is_array($field['email']['condition'])) {
//rsssl option check
$fieldname = array_key_first($field['email']['condition']);
$value = $field['email']['condition'][$fieldname];
$email_condition_result = rsssl_get_option($fieldname) === $value;
} else {
//function check
$function = $field['email']['condition'];
$email_condition_result = function_exists($function) && $function();
}
return isset($field['email']['message']) && $field['value'] && $email_condition_result;
});
if ( count($fields)===0 ) {
return;
}
$current_fields = get_option('rsssl_email_warning_fields', []);
//if it's empty, we start counting time. 30 mins later we send a mail.
update_option('rsssl_email_warning_fields_saved', time(), false );
$current_ids = array_column($current_fields, 'id');
foreach ($fields as $field){
if ( !in_array( $field['id'], $current_ids, true ) ) {
$current_fields[] = $field;
}
}
update_option('rsssl_email_warning_fields', $current_fields, false);
}
add_action('rsssl_after_saved_fields', 'rsssl_gather_warning_blocks_for_mail', 40);
/**
* Check if server uses .htaccess
* @return bool
*/
function rsssl_uses_htaccess() {
//when using WP CLI, the get_server check does not work, so we assume .htaccess is being used
//and rely on the file exists check to catch if not.
if ( defined( 'WP_CLI' ) && WP_CLI ) {
return true;
}
return rsssl_get_server() === 'apache' || rsssl_get_server() === 'litespeed';
}
/**
* Get htaccess status
* @return string | bool
*/
function rsssl_htaccess_status(){
if ( empty(get_site_option('rsssl_htaccess_rules','')) ) {
return false;
}
return get_site_option('rsssl_htaccess_error');
}
/**
* Get htaccess status
* @return string | bool
*/
function rsssl_uploads_htaccess_status(){
if ( empty(get_site_option('rsssl_uploads_htaccess_rules','')) ) {
return false;
}
return get_site_option('rsssl_uploads_htaccess_error');
}
/**
* @return string|null
* Get the wp-config.php path
*/
function rsssl_find_wp_config_path()
{
if ( !rsssl_user_can_manage() ) {
return null;
}
//limit nr of iterations to 5
$i = 0;
$dir = __DIR__;
do {
$i++;
if (file_exists($dir . "/wp-config.php")) {
return $dir . "/wp-config.php";
}
} while (($dir = realpath("$dir/..")) && ($i < 10));
return null;
}
/**
* Returns the server type of the plugin user.
*
* @return string|bool server type the user is using of false if undetectable.
*/
function rsssl_get_server() {
//Allows to override server authentication for testing or other reasons.
if ( defined( 'RSSSL_SERVER_OVERRIDE' ) ) {
return RSSSL_SERVER_OVERRIDE;
}
$server_raw = strtolower( htmlspecialchars( $_SERVER['SERVER_SOFTWARE'] ) );
//figure out what server they're using
if ( strpos( $server_raw, 'apache' ) !== false ) {
return 'apache';
} elseif ( strpos( $server_raw, 'nginx' ) !== false ) {
return 'nginx';
} elseif ( strpos( $server_raw, 'litespeed' ) !== false ) {
return 'litespeed';
} else { //unsupported server
return false;
}
}
/**
* @return string
* Generate a random prefix
*/
function rsssl_generate_random_string($length) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$randomString = '';
for ( $i = 0; $i < $length; $i++ ) {
$index = rand(0, strlen($characters) - 1);
$randomString .= $characters[$index];
}
return $randomString;
}
/**
* @return string
*
* Get users as string to display
*/
function rsssl_list_users_where_display_name_is_login_name() {
if ( !rsssl_user_can_manage() ) {
return '';
}
$users = rsssl_get_users_where_display_name_is_login( true );
if ( is_array( $users ) ) {
$ext = count($users)>=10 ? '...' : '';
$users = array_slice($users, 0, 10);
return implode( ', ', $users ).$ext;
}
return '';
}
/**
* @return bool|void
*
* Check if user e-mail is verified
*/
function rsssl_is_email_verified() {
if ( ! rsssl_user_can_manage() ) {
return false;
}
if ( get_option('rsssl_email_verification_status') == 'completed' ) {
// completed
return true;
}
if ( get_option('rsssl_email_verification_status') == 'started' ) {
// started
return false;
}
if ( get_option('rsssl_email_verification_status') == 'email_changed' ) {
// e-mail changed, has to re-verify
return false;
}
return false;
}
function rsssl_remove_prefix_from_version($version) {
return preg_replace('/^[^\d]*(?=\d)/', '', $version);
}
function rsssl_version_compare($version, $compare_to, $operator = null) {
$version = rsssl_remove_prefix_from_version($version);
$compare_to = rsssl_remove_prefix_from_version($compare_to);
return version_compare($version, $compare_to, $operator);
}
function rsssl_lock_file_exists() {
if ( file_exists( trailingslashit( WP_CONTENT_DIR ) . 'rsssl-safe-mode.lock' ) ) {
return true;
}
return false;
}
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