/**
* Check whether the rules in a htaccess file are the default options generated
* by WordPress or if the file has custom options added by other Plugins.
*
* @param string $rules Optional parameter containing a text string with the content of the main htaccess file.
* @return boolean Either TRUE or FALSE if the rules found in the htaccess file specified are the default ones or not.
*/
function sucuriscan_htaccess_is_standard($rules = false)
{
if ($rules === false) {
$htaccess_path = SucuriScan::get_htaccess_path();
$rules = $htaccess_path ? file_get_contents($htaccess_path) : '';
}
if (!empty($rules)) {
$standard_lines = array('# BEGIN WordPress', '<IfModule mod_rewrite\\.c>', 'RewriteEngine On', 'RewriteBase \\/', 'RewriteRule .index.\\.php. - \\[L\\]', 'RewriteCond %\\{REQUEST_FILENAME\\} \\!-f', 'RewriteCond %\\{REQUEST_FILENAME\\} \\!-d', 'RewriteRule \\. \\/index\\.php \\[L\\]', '<\\/IfModule>', '# END WordPress');
$pattern = '';
$standard_lines_total = count($standard_lines);
foreach ($standard_lines as $i => $line) {
if ($i < $standard_lines_total - 1) {
$end_of_line = "\n";
} else {
$end_of_line = '';
}
$pattern .= sprintf('%s%s', $line, $end_of_line);
}
if (preg_match("/{$pattern}/", $rules)) {
return true;
}
}
return false;
}
/**
* Check if the standard rules for a normal WordPress installation (not network
* based) are inside the main htaccess file. This only applies to websites that
* have permalinks enabled, or 3rd-party plugins that require custom rules
* (generally based on mod_deflate) to compress and/or generate static files for
* cache.
*
* @param string $rules Content of the main htaccess file.
* @return boolean True if the htaccess has the standard rules, false otherwise.
*/
function sucuriscan_htaccess_is_standard($rules = false)
{
if ($rules === false) {
$rules = '';
$htaccess_path = SucuriScan::get_htaccess_path();
if ($htaccess_path) {
$rules = @file_get_contents($htaccess_path);
}
}
if (is_string($rules) && !empty($rules)) {
$rewrite = new WP_Rewrite();
$standard = $rewrite->mod_rewrite_rules();
return (bool) (strpos($rules, $standard) !== false);
}
return false;
}