/*
* Copyright 2016 ThoughtWorks, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.thoughtworks.go.validators;
import com.thoughtworks.go.server.service.result.LocalizedResult;
public class HostNameValidator implements Validator<String> {
private static final String IPV6_ADDRESS_PATTERN = "([a-fA-F0-9]+\\:)*[a-fA-F0-9]+";
static final String HOSTNAME_PATTERN = "([-_0-9\\w]*\\.)*[-_0-9\\w]+";
public static final String HOSTNAME_ERROR_MESSAGE = "Not a legal hostname or IP address. "
+ "A legal hostname can only contain letters (A-z) digits (0-9) hyphens (-) dots (.) and underscores (_)";
public static final String INVALID_HOSTNAME_KEY = "INVALID_HOSTNAME";
public void validate(String hostname, LocalizedResult result) {
if (hostname == null || (!hostname.matches(HOSTNAME_PATTERN) && !hostname.matches(IPV6_ADDRESS_PATTERN))) {
result.invalid(INVALID_HOSTNAME_KEY, String.valueOf(hostname));
}
}
}