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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Validator\Constraints;

use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Symfony\Component\Validator\Constraint;

/**
 * Validates that a value is a valid IP address
 *
 * @Annotation
 *
 * @author Bernhard Schussek <bschussek@gmail.com>
 * @author Joseph Bielawski <stloyd@gmail.com>
 *
 * @api
 */
class Ip extends Constraint
{
    const V4 = '4';
    const V6 = '6';
    const ALL = 'all';

    // adds FILTER_FLAG_NO_PRIV_RANGE flag (skip private ranges)
    const V4_NO_PRIV = '4_no_priv';
    const V6_NO_PRIV = '6_no_priv';
    const ALL_NO_PRIV = 'all_no_priv';

    // adds FILTER_FLAG_NO_RES_RANGE flag (skip reserved ranges)
    const V4_NO_RES = '4_no_res';
    const V6_NO_RES = '6_no_res';
    const ALL_NO_RES = 'all_no_res';

    // adds FILTER_FLAG_NO_PRIV_RANGE and FILTER_FLAG_NO_RES_RANGE flags (skip both)
    const V4_ONLY_PUBLIC = '4_public';
    const V6_ONLY_PUBLIC = '6_public';
    const ALL_ONLY_PUBLIC = 'all_public';

    protected static $versions = array(
        self::V4,
        self::V6,
        self::ALL,

        self::V4_NO_PRIV,
        self::V6_NO_PRIV,
        self::ALL_NO_PRIV,

        self::V4_NO_RES,
        self::V6_NO_RES,
        self::ALL_NO_RES,

        self::V4_ONLY_PUBLIC,
        self::V6_ONLY_PUBLIC,
        self::ALL_ONLY_PUBLIC,
    );

    public $version = self::V4;

    public $message = 'This is not a valid IP address.';

    /**
     * {@inheritDoc}
     */
    public function __construct($options = null)
    {
        parent::__construct($options);

        if (!in_array($this->version, self::$versions)) {
            throw new ConstraintDefinitionException(sprintf('The option "version" must be one of "%s"', implode('", "', self::$versions)));
        }
    }
}