PhutilCIDRList.php
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	<?php

	/**
	* List of CIDR notation IP blocks, like "172.30.0.0/16".
	*
	* This class is primarily useful for managing IP whitelists or blacklists.
	* For example, you can check if an address is on a subnet like this:
	*
	* $whitelist = PhutilCIDRList::newList(array('172.30.0.0/16'));
	* $ok = $whitelist->containsAddrsss('172.30.0.1');
	*/
	final class PhutilCIDRList extends Phobject {

	private $blocks;

	private function __construct() {
	// <private>
	}

	public static function newList(array $blocks) {
	foreach ($blocks as $key => $block) {
	$blocks[$key] = PhutilCIDRBlock::newBlock($block);
	}

	$obj = new PhutilCIDRList();
	$obj->blocks = $blocks;
	return $obj;
	}

	public function containsAddress($address) {
	foreach ($this->blocks as $block) {
	if ($block->containsAddress($address)) {
	return true;
	}
	}

	return false;
	}

	}