IPv4Range.php
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IPv4Range.php
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	<?php

	namespace Keruald\OmniTools\Network;

	use InvalidArgumentException;

	class IPv4Range extends IPRange {

	/**
	* @var string
	*/
	private $base;

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

	///
	/// Constructors
	///

	public function __construct (string $base, int $networkBits) {
	$this->setBase($base);
	$this->setNetworkBits($networkBits);
	}

	///
	/// Getters and setters
	///

	/**
	* @return string
	*/
	public function getBase () : string {
	return $this->base;
	}

	/**
	* @param string $base
	*/
	public function setBase (string $base) : void {
	if (!IP::isIPv4($base)) {
	throw new InvalidArgumentException;
	}

	$this->base = $base;
	}

	/**
	* @return int
	*/
	public function getNetworkBits () : int {
	return $this->networkBits;
	}

	/**
	* @param int $networkBits
	*/
	public function setNetworkBits (int $networkBits) : void {
	if ($networkBits < 0 \|\| $networkBits > 32) {
	throw new InvalidArgumentException;
	}

	$this->networkBits = $networkBits;
	}

	///
	/// Helper methods
	///

	public function getFirst () : string {
	return $this->base;
	}

	public function getLast () : string {
	return long2ip(ip2long($this->base) + 2 ** $this->count() - 1);
	}

	public function contains (string $ip) : bool {
	if (!IP::isIP($ip)) {
	throw new InvalidArgumentException;
	}

	if (!IP::isIPv4($ip)) {
	return false;
	}

	$ipAsLong = ip2long($ip);
	$baseAsLong = ip2long($this->base);

	return $ipAsLong >= $baseAsLong
	&& $ipAsLong <= $baseAsLong + $this->count() - 1;
	}

	///
	/// Countable interface
	///

	public function count () : int {
	return 32 - $this->networkBits;
	}

	}