io.bdeploy.common.cfg.HostnameValidator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of api Show documentation

Public API including dependencies, ready to be used for integrations and plugins.

There is a newer version: 7.3.6

package io.bdeploy.common.cfg;

import java.util.regex.Pattern;

import io.bdeploy.common.cfg.Configuration.ConfigValidator;
import io.bdeploy.common.cfg.Configuration.ValidationMessage;

/**
 * Validate hostname value according to https://tools.ietf.org/html/rfc1123 2.1 which extends
 */
@ValidationMessage("Not a valid host name: %s")
public class HostnameValidator implements ConfigValidator {

    private static final Pattern HOSTNAME_PATTERN = Pattern
            .compile("(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\\.)*[a-z0-9][a-z0-9-]{0,61}[a-z0-9]");

    @Override
    public boolean validate(String value) {
        return HOSTNAME_PATTERN.matcher(value.toLowerCase()).matches();
    }

}