一尘不染

清理Tomcat访问日志条目

tomcat

在我们的日志中,我们看到了信用卡号,原因是有人在我们的应用程序中使用CC信息击中了某些ULR(我不知道他们为什么这样做)。我们要清理此信息(出于PCI考虑),甚至不将其持久化到磁盘上。

因此,我希望能够在日志条目到达日志文件之前对其进行清理。我一直在寻找Tomcat Valves(Access Log Valve)。这是要走的路吗?


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2020-06-16

共1个答案

一尘不染

我能够通过扩展AccessLogValve和覆盖来解决此问题public log(java.lang.String message)

public class SanitizedAccessLogValve extends AccessLogValve {

    private static Pattern pattern = Pattern.compile("\\b(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11})\\b");

    /*
     This method will sanitize any cc numbers in the string and replace them with x's
    */
    private String sanitize(String string) {
        String sanitizedString = string;

        if(string != null) {

            StringBuffer buffer = new StringBuffer();
            Matcher matcher = pattern.matcher(string);

            while(matcher.find()) {
                MatchResult matchResult = matcher.toMatchResult();

                int start = matchResult.start();
                int end = matchResult.end();

                String matchedText = string.substring(start, end);

                matcher.appendReplacement(buffer, "xxxxxxxxxxxxxxxx");                
            }

            matcher.appendTail(buffer);

            sanitizedString = buffer.toString();
        }

        return sanitizedString;
    }

    @Override
    public void log(String message) {
        super.log(sanitize(message));
    }
}

您需要将其编译到一个jar中,然后将该jar文件放入中$CATALINA_HOME/lib

然后在您的server.xml

<Valve className="my.valves.SanitizedAccessLogValve"
       directory="access_logs"  prefix="localhost." suffix=".log"
       pattern='%v %h %t "%r" %s %B %T "%{User-Agent}i"'/>
2020-06-16