ip = "0"; $this->port = "1965"; $this->data_dir = "hosts/"; $this->default_host_dir = "default/"; $this->default_index_file = "index.gemini"; $this->logging = 1; $this->log_file = "logs/gemini-php.log"; $this->log_sep = "\t"; $settings = array('ip', 'port', 'data_dir', 'default_host_dir', 'default_index_file', 'certificate_file', 'certificate_passphrase'); foreach($settings as $setting_key) { if(!empty($config[$setting_key])) $this->$setting_key = $config[$setting_key]; } // append the required filepath slashes if they're missing if(substr($this->data_dir, -1) != "/") $this->data_dir .= "/"; if(substr($this->default_host_dir, -1) != "/") $this->default_host_dir .= "/"; if($this->logging) { if(!file_exists($this->log_file)) { $this->log_to_file("Log created", null, null, null, null); } if(!is_writable($this->log_file)) { die("{$this->log_file} is not writable.\n"); } } if(!is_readable($this->certificate_file)) die("Certificate file {$this->certificate_file} not readable.\n"); } function parse_request($request) { $url = trim($request); // strip from the end return parse_url($url); } function get_valid_hosts() { $dirs = array_map('basename', glob($this->data_dir.'*', GLOB_ONLYDIR)); return $dirs; } function get_status_code($filepath) { if(is_file($filepath) and file_exists($filepath)) return "20"; if(!file_exists($filepath)) return "51"; return "50"; } function get_mime_type($filepath) { $type = mime_content_type($filepath); // we need a way to detect gemini file types, which PHP doesn't // so.. if it ends with gemini (or if it has no extension), assume $path_parts = pathinfo($filepath); if(empty($path_parts['extension']) or $path_parts['extension'] == "gemini") $type = "text/gemini"; return $type; } /** * Gets the full file path (assumes directory structure based on host) * * This function determines where the requested file is stored * based on the hostname supplied in the request from the client. * If no host is supplied, the default directory is assumed. * * @param array $url An array returned by the parse_request() method * * @return string */ function get_filepath($url) { $hostname = ""; if(!is_array($url)) return false; if(!empty($url['host'])) $hostname = $url['host']; $valid_hosts = $this->get_valid_hosts(); if(!in_array($hostname, $valid_hosts)) $hostname = "default"; // Kristall Browser is adding "__" to the end of the filenames // wtf am I missing? // also removing ".." to mitigate against directory traversal $url['path'] = str_replace(array("..", "__"), "", $url['path']); // force an index file to be appended if a filename is missing if(empty($url['path'])) { $url['path'] = "/".$this->default_index_file; } elseif(substr($url['path'], -1) == "/") { $url['path'] .= $this->default_index_file; } $valid_data_dir = dirname(__FILE__)."/".$this->data_dir; $return_path = $this->data_dir.$hostname.$url['path']; // check the real path is in the data_dir (path traversal sanity check) if(substr(realpath($return_path),0, strlen($valid_data_dir)) == $valid_data_dir) { return $return_path; } return false; } function log_to_file($ip, $status_code, $meta, $filepath, $filesize) { $ts = date("Y-m-d H:i:s", strtotime('now')); $this->log_sep; $str = $ts.$this->log_sep.$ip.$this->log_sep.$status_code.$this->log_sep. $meta.$this->log_sep.$filepath.$this->log_sep.$filesize."\n"; file_put_contents($this->log_file, $str, FILE_APPEND); } } ?>