function csv_log_html($logname='') {
	check_file_dir_name($logname);
	$html_str = "<div class='filetext'>".PHP_EOL."<ol class='logview'>".PHP_EOL;
    $fp = csv_edih_basedir().DS.'log'.DS.$logname;
    if ( is_file($fp) ) {
		$fh = fopen( $fp, 'r');
		if ($fh !== FALSE) {
			while (($buffer = fgets($fh)) !== false) {
				$html_str .= "<li>".$buffer."</li>".PHP_EOL;
			}
			$html_str .= "</ol>".PHP_EOL."</div>".PHP_EOL;
			if (!feof($fh)) {
				$html_str .= "<p>Error in logfile: unexpected file ending</p>".PHP_EOL;
			}
			fclose($fh);
		} else {
			$html_str = "<p>Error: unable to open log file</p>".PHP_EOL;
		}
	}
	return $html_str;
}
The software prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.