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/*
 * Copyright (c) 2014, Francis Galiegue ([email protected])
 *
 * This software is dual-licensed under:
 *
 * - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
 *   later version;
 * - the Apache Software License (ASL) version 2.0.
 *
 * The text of this file and of both licenses is available at the root of this
 * project or, if you have the jar distribution, in directory META-INF/, under
 * the names LGPL-3.0.txt and ASL-2.0.txt respectively.
 *
 * Direct link to the sources:
 *
 * - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
 * - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
 */

package com.github.fge.jsonschema.format.helpers;

import com.github.fge.jackson.NodeType;
import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.format.AbstractFormatAttribute;
import com.github.fge.jsonschema.processors.data.FullData;
import com.github.fge.msgsimple.bundle.MessageBundle;
import com.google.common.net.InternetDomainName;

/**
 * Validator for the {@code host-name} format attribute.
 *
 * Important note: the basis for host name format validation is RFC 1034. The RFC does not
 *  require that a host name have more than one domain name component. As
 * such, {@code foo} is a valid hostname.
 *
 * Guava's {@link InternetDomainName} is used for validation.
 */
public final class SharedHostNameAttribute
    extends AbstractFormatAttribute
{
    public SharedHostNameAttribute(final String fmt)
    {
        super(fmt, NodeType.STRING);
    }

    @Override
    public void validate(final ProcessingReport report,
        final MessageBundle bundle, final FullData data)
        throws ProcessingException
    {
        final String value = data.getInstance().getNode().textValue();

        try {
            InternetDomainName.from(value);
        } catch (IllegalArgumentException ignored) {
            report.error(newMsg(data, bundle, "err.format.invalidHostname")
                .putArgument("value", value));
        }
    }
}