<?php

/**
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information please see
 * <http://phing.info>.
 */

namespace Phing\Task\System\Condition;

use Phing\Exception\BuildException;

/**
 * <socket> condition container.
 *
 * Tests for a (tcp) listener on a specified host and port
 *
 * @author  Michiel Rook <mrook@php.net>
 */
class SocketCondition implements Condition
{
    /**
     * @var string
     */
    private $server;

    /**
     * @var int
     */
    private $port;

    /**
     * @param string $server
     */
    public function setServer($server)
    {
        $this->server = $server;
    }

    /**
     * @param int $port
     */
    public function setPort($port)
    {
        $this->port = $port;
    }

    /**
     * @throws BuildException
     *
     * @return bool
     */
    public function evaluate()
    {
        if (empty($this->server)) {
            throw new BuildException('No server specified');
        }

        if (empty($this->port)) {
            throw new BuildException('No port specified');
        }

        $socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

        if (false === $socket) {
            throw new BuildException('Unable to create socket: ' . socket_last_error($socket));
        }

        return @socket_connect($socket, $this->server, $this->port);
    }
}
