1103 lines
26 KiB
PHP
1103 lines
26 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* This file contains the implementation of the Net_IPv6 class
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to the New BSD license, that is
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* available through the world-wide-web at
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* http://www.opensource.org/licenses/bsd-license.php
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* If you did not receive a copy of the new BSDlicense and are unable
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* to obtain it through the world-wide-web, please send a note to
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* license@php.net so we can mail you a copy immediately
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*
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* @category Net
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* @package Net_IPv6
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* @author Alexander Merz <alexander.merz@web.de>
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* @copyright 2003-2005 The PHP Group
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* @license BSD License http://www.opensource.org/licenses/bsd-license.php
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* @version CVS: $Id: IPv6.php 338818 2016-03-25 12:15:02Z alexmerz $
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* @link http://pear.php.net/package/Net_IPv6
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*/
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// {{{ constants
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/**
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* Error message if netmask bits was not found
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* @see isInNetmask
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*/
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define("NET_IPV6_NO_NETMASK_MSG", "Netmask length not found");
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/**
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* Error code if netmask bits was not found
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* @see isInNetmask
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*/
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define("NET_IPV6_NO_NETMASK", 10);
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/**
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* Address Type: Unassigned (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_UNASSIGNED", 1);
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/**
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* Address Type: Reserved (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_RESERVED", 11);
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/**
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* Address Type: Reserved for NSAP Allocation (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_RESERVED_NSAP", 12);
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/**
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* Address Type: Reserved for IPX Allocation (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_RESERVED_IPX", 13);
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/**
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* Address Type: Reserved for Geographic-Based Unicast Addresses
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* (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC", 14);
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/**
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* Address Type: Provider-Based Unicast Address (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_UNICAST_PROVIDER", 22);
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/**
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* Address Type: Multicast Addresses (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_MULTICAST", 31);
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/**
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* Address Type: Link Local Use Addresses (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_LOCAL_LINK", 42);
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/**
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* Address Type: Link Local Use Addresses (RFC 1884, Section 2.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_LOCAL_SITE", 43);
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/**
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* Address Type: Address range to embedded IPv4 ip in an IPv6 address (RFC 4291, Section 2.5.5)
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* @see getAddressType()
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*/
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define("NET_IPV6_IPV4MAPPING", 51);
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/**
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* Address Type: Unspecified (RFC 4291, Section 2.5.2)
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* @see getAddressType()
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*/
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define("NET_IPV6_UNSPECIFIED", 52);
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/**
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* Address Type: Unspecified (RFC 4291, Section 2.5.3)
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* @see getAddressType()
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*/
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define("NET_IPV6_LOOPBACK", 53);
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/**
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* Address Type: address can not assigned to a specific type
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* @see getAddressType()
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*/
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define("NET_IPV6_UNKNOWN_TYPE", 1001);
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// }}}
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// {{{ Net_IPv6
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/**
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* Class to validate and to work with IPv6 addresses.
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*
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* @category Net
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* @package Net_IPv6
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* @author Alexander Merz <alexander.merz@web.de>
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* @author <elfrink at introweb dot nl>
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* @author Josh Peck <jmp at joshpeck dot org>
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* @copyright 2003-2010 The PHP Group
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* @license BSD License http://www.opensource.org/licenses/bsd-license.php
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* @version Release: 1.1.0RC5
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* @link http://pear.php.net/package/Net_IPv6
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*/
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class Net_IPv6
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{
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// {{{ separate()
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/**
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* Separates an IPv6 address into the address and a prefix length part
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*
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* @param String $ip the (compressed) IP as Hex representation
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*
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* @return Array the first element is the IP, the second the prefix length
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* @since 1.2.0
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* @access public
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* @static
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*/
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public static function separate($ip)
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{
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$addr = $ip;
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$spec = '';
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if(false === strrpos($ip, '/')) {
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return array($addr, $spec);
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}
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$elements = explode('/', $ip);
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if(2 == count($elements)) {
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$addr = $elements[0];
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$spec = $elements[1];
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}
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return array($addr, $spec);
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}
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// }}}
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// {{{ removeNetmaskSpec()
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/**
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* Removes a possible existing prefix length/ netmask specification at an IP addresse.
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*
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* @param String $ip the (compressed) IP as Hex representation
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*
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* @return String the IP without netmask length
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* @since 1.1.0
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* @access public
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* @static
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*/
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public static function removeNetmaskSpec($ip)
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{
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$elements = Net_IPv6::separate($ip);
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return $elements[0];
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}
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// }}}
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// {{{ removePrefixLength()
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/**
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* Tests for a prefix length specification in the address
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* and removes the prefix length, if exists
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*
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* The method is technically identical to removeNetmaskSpec() and
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* will be dropped in a future release.
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*
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* @param String $ip a valid ipv6 address
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*
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* @return String the address without a prefix length
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* @access public
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* @static
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* @see removeNetmaskSpec()
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* @deprecated
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*/
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public static function removePrefixLength($ip)
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{
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$pos = strrpos($ip, '/');
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if (false !== $pos) {
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return substr($ip, 0, $pos);
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}
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return $ip;
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}
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// }}}
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// {{{ getNetmaskSpec()
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/**
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* Returns a possible existing prefix length/netmask specification on an IP addresse.
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*
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* @param String $ip the (compressed) IP as Hex representation
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*
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* @return String the netmask spec
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* @since 1.1.0
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* @access public
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* @static
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*/
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public static function getNetmaskSpec($ip)
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{
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$elements = Net_IPv6::separate($ip);
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return $elements[1];
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}
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// }}}
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// {{{ getPrefixLength()
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/**
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* Tests for a prefix length specification in the address
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* and returns the prefix length, if exists
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*
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* The method is technically identical to getNetmaskSpec() and
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* will be dropped in a future release.
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*
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* @param String $ip a valid ipv6 address
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*
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* @return Mixed the prefix as String or false, if no prefix was found
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* @access public
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* @static
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* @deprecated
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*/
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public static function getPrefixLength($ip)
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{
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if (preg_match("/^([0-9a-fA-F:]{2,39})\/(\d{1,3})*$/",
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$ip, $matches)) {
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return $matches[2];
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} else {
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return false;
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}
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}
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// }}}
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// {{{ getNetmask()
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/**
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* Calculates the network prefix based on the netmask bits.
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*
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* @param String $ip the (compressed) IP in Hex format
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* @param int $bits if the number of netmask bits is not part of the IP
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* you must provide the number of bits
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*
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* @return String the network prefix
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* @since 1.1.0
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* @access public
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* @static
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*/
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public static function getNetmask($ip, $bits = null)
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{
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if (null==$bits) {
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$elements = explode('/', $ip);
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if (2 == count($elements)) {
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$addr = $elements[0];
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$bits = $elements[1];
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} else {
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include_once 'PEAR.php';
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return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG,
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NET_IPV6_NO_NETMASK);
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}
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} else {
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$addr = $ip;
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}
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$addr = Net_IPv6::uncompress($addr);
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$binNetmask = str_repeat('1', $bits).str_repeat('0', 128 - $bits);
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return Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($addr) & $binNetmask);
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}
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// }}}
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// {{{ isInNetmask()
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/**
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* Checks if an (compressed) IP is in a specific address space.
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*
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* IF the IP does not contains the number of netmask bits (F8000::FFFF/16)
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* then you have to use the $bits parameter.
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*
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* @param String $ip the IP to check (eg. F800::FFFF)
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* @param String $netmask the netmask (eg F800::)
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* @param int $bits the number of netmask bits to compare,
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* if not given in $ip
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*
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* @return boolean true if $ip is in the netmask
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* @since 1.1.0
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* @access public
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* @static
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*/
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public static function isInNetmask($ip, $netmask, $bits=null)
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{
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// try to get the bit count
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if (null == $bits) {
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$elements = explode('/', $ip);
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if (2 == count($elements)) {
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$ip = $elements[0];
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$bits = $elements[1];
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} else if (null == $bits) {
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$elements = explode('/', $netmask);
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if (2 == count($elements)) {
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$netmask = $elements[0];
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$bits = $elements[1];
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}
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if (null == $bits) {
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include_once 'PEAR.php';
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return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG,
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NET_IPV6_NO_NETMASK);
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}
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}
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}
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$binIp = Net_IPv6::_ip2Bin(Net_IPv6::removeNetmaskSpec($ip));
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$binNetmask = Net_IPv6::_ip2Bin(Net_IPv6::removeNetmaskSpec($netmask));
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if (null != $bits
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&& "" != $bits
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&& 0 == strncmp($binNetmask, $binIp, $bits)) {
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return true;
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}
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return false;
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}
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// }}}
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// {{{ getAddressType()
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/**
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* Returns the type of an IPv6 address.
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*
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* RFC 2373, Section 2.3 describes several types of addresses in
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* the IPv6 addresse space.
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* Several addresse types are markers for reserved spaces and as
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* consequence a subject to change.
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*
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* @param String $ip the IP address in Hex format,
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* compressed IPs are allowed
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*
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* @return int one of the addresse type constants
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* @access public
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* @since 1.1.0
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* @static
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*
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* @see NET_IPV6_UNASSIGNED
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* @see NET_IPV6_RESERVED
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* @see NET_IPV6_RESERVED_NSAP
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* @see NET_IPV6_RESERVED_IPX
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* @see NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC
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* @see NET_IPV6_UNICAST_PROVIDER
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* @see NET_IPV6_MULTICAST
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* @see NET_IPV6_LOCAL_LINK
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* @see NET_IPV6_LOCAL_SITE
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* @see NET_IPV6_IPV4MAPPING
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* @see NET_IPV6_UNSPECIFIED
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* @see NET_IPV6_LOOPBACK
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* @see NET_IPV6_UNKNOWN_TYPE
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*/
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public static function getAddressType($ip)
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{
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$ip = Net_IPv6::removeNetmaskSpec($ip);
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$binip = Net_IPv6::_ip2Bin($ip);
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if(0 == strncmp(str_repeat('0', 128), $binip, 128)) { // ::/128
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return NET_IPV6_UNSPECIFIED;
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} else if(0 == strncmp(str_repeat('0', 127).'1', $binip, 128)) { // ::/128
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return NET_IPV6_LOOPBACK;
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} else if (0 == strncmp(str_repeat('0', 80).str_repeat('1', 16), $binip, 96)) { // ::ffff/96
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return NET_IPV6_IPV4MAPPING;
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} else if (0 == strncmp('1111111010', $binip, 10)) {
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return NET_IPV6_LOCAL_LINK;
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} else if (0 == strncmp('1111111011', $binip, 10)) {
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return NET_IPV6_LOCAL_SITE;
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} else if (0 == strncmp('111111100', $binip, 9)) {
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return NET_IPV6_UNASSIGNED;
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} else if (0 == strncmp('11111111', $binip, 8)) {
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return NET_IPV6_MULTICAST;
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} else if (0 == strncmp('00000000', $binip, 8)) {
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return NET_IPV6_RESERVED;
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} else if (0 == strncmp('00000001', $binip, 8)
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|| 0 == strncmp('1111110', $binip, 7)) {
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return NET_IPV6_UNASSIGNED;
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} else if (0 == strncmp('0000001', $binip, 7)) {
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return NET_IPV6_RESERVED_NSAP;
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} else if (0 == strncmp('0000010', $binip, 7)) {
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return NET_IPV6_RESERVED_IPX;;
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} else if (0 == strncmp('0000011', $binip, 7) ||
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0 == strncmp('111110', $binip, 6) ||
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0 == strncmp('11110', $binip, 5) ||
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0 == strncmp('00001', $binip, 5) ||
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0 == strncmp('1110', $binip, 4) ||
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0 == strncmp('0001', $binip, 4) ||
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0 == strncmp('001', $binip, 3) ||
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0 == strncmp('011', $binip, 3) ||
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0 == strncmp('101', $binip, 3) ||
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0 == strncmp('110', $binip, 3)) {
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return NET_IPV6_UNASSIGNED;
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} else if (0 == strncmp('010', $binip, 3)) {
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return NET_IPV6_UNICAST_PROVIDER;
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} else if (0 == strncmp('100', $binip, 3)) {
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return NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC;
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}
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return NET_IPV6_UNKNOWN_TYPE;
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}
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// }}}
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// {{{ Uncompress()
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/**
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* Uncompresses an IPv6 adress
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*
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* RFC 2373 allows you to compress zeros in an adress to '::'. This
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* function expects an valid IPv6 adress and expands the '::' to
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* the required zeros.
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*
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* Example: FF01::101 -> FF01:0:0:0:0:0:0:101
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* ::1 -> 0:0:0:0:0:0:0:1
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*
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* @param String $ip a valid IPv6-adress (hex format)
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* @param Boolean $leadingZeros if true, leading zeros are added to each
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* block of the address
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* (FF01::101 ->
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* FF01:0000:0000:0000:0000:0000:0000:0101)
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*
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* @return String the uncompressed IPv6-adress (hex format)
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* @access public
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* @see Compress()
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* @static
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* @author Pascal Uhlmann
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*/
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public static function uncompress($ip, $leadingZeros = false)
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{
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$prefix = Net_IPv6::getPrefixLength($ip);
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if (false === $prefix) {
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$prefix = '';
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} else {
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$ip = Net_IPv6::removePrefixLength($ip);
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$prefix = '/'.$prefix;
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}
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$netmask = Net_IPv6::getNetmaskSpec($ip);
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$uip = Net_IPv6::removeNetmaskSpec($ip);
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$c1 = -1;
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$c2 = -1;
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if (false !== strpos($uip, '::') ) {
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list($ip1, $ip2) = explode('::', $uip);
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if ("" == $ip1) {
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$c1 = -1;
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} else {
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$pos = 0;
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if (0 < ($pos = substr_count($ip1, ':'))) {
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$c1 = $pos;
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} else {
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$c1 = 0;
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}
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}
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if ("" == $ip2) {
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$c2 = -1;
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} else {
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$pos = 0;
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|
|
if (0 < ($pos = substr_count($ip2, ':'))) {
|
|
|
|
$c2 = $pos;
|
|
|
|
} else {
|
|
|
|
$c2 = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (strstr($ip2, '.')) {
|
|
|
|
$c2++;
|
|
|
|
}
|
|
if (-1 == $c1 && -1 == $c2) { // ::
|
|
|
|
$uip = "0:0:0:0:0:0:0:0";
|
|
|
|
} else if (-1 == $c1) { // ::xxx
|
|
|
|
$fill = str_repeat('0:', 7-$c2);
|
|
$uip = str_replace('::', $fill, $uip);
|
|
|
|
} else if (-1 == $c2) { // xxx::
|
|
|
|
$fill = str_repeat(':0', 7-$c1);
|
|
$uip = str_replace('::', $fill, $uip);
|
|
|
|
} else { // xxx::xxx
|
|
|
|
$fill = str_repeat(':0:', 6-$c2-$c1);
|
|
$uip = str_replace('::', $fill, $uip);
|
|
$uip = str_replace('::', ':', $uip);
|
|
|
|
}
|
|
}
|
|
|
|
if(true == $leadingZeros) {
|
|
|
|
$uipT = array();
|
|
$uiparts = explode(':', $uip);
|
|
|
|
foreach($uiparts as $p) {
|
|
|
|
$uipT[] = sprintf('%04s', $p);
|
|
|
|
}
|
|
|
|
$uip = implode(':', $uipT);
|
|
}
|
|
|
|
if ('' != $netmask) {
|
|
|
|
$uip = $uip.'/'.$netmask;
|
|
|
|
}
|
|
|
|
return $uip.$prefix;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ Compress()
|
|
|
|
/**
|
|
* Compresses an IPv6 adress
|
|
*
|
|
* RFC 2373 allows you to compress zeros in an adress to '::'. This
|
|
* function expects an valid IPv6 adress and compresses successive zeros
|
|
* to '::'
|
|
*
|
|
* Example: FF01:0:0:0:0:0:0:101 -> FF01::101
|
|
* 0:0:0:0:0:0:0:1 -> ::1
|
|
*
|
|
* Whe $ip is an already compressed adress the methode returns the value as is,
|
|
* also if the adress can be compressed further.
|
|
*
|
|
* Example: FF01::0:1 -> FF01::0:1
|
|
*
|
|
* To enforce maximum compression, you can set the second argument $force to true.
|
|
*
|
|
* Example: FF01::0:1 -> FF01::1
|
|
*
|
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
* @param boolean $force if true the adress will be compresses as best as possible (since 1.2.0)
|
|
*
|
|
* @return tring the compressed IPv6-adress (hex format)
|
|
* @access public
|
|
* @see Uncompress()
|
|
* @static
|
|
* @author elfrink at introweb dot nl
|
|
*/
|
|
public static function compress($ip, $force = false)
|
|
{
|
|
|
|
if(false !== strpos($ip, '::')) { // its already compressed
|
|
|
|
if(true == $force) {
|
|
|
|
$ip = Net_IPv6::uncompress($ip);
|
|
|
|
} else {
|
|
|
|
return $ip;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
$prefix = Net_IPv6::getPrefixLength($ip);
|
|
|
|
if (false === $prefix) {
|
|
|
|
$prefix = '';
|
|
|
|
} else {
|
|
|
|
$ip = Net_IPv6::removePrefixLength($ip);
|
|
$prefix = '/'.$prefix;
|
|
|
|
}
|
|
|
|
$netmask = Net_IPv6::getNetmaskSpec($ip);
|
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
|
|
$ipp = explode(':', $ip);
|
|
|
|
for ($i = 0; $i < count($ipp); $i++) {
|
|
|
|
$ipp[$i] = dechex(hexdec($ipp[$i]));
|
|
|
|
}
|
|
|
|
$cip = ':' . join(':', $ipp) . ':';
|
|
|
|
preg_match_all("/(:0)(:0)+/", $cip, $zeros);
|
|
|
|
if (count($zeros[0]) > 0) {
|
|
|
|
$match = '';
|
|
|
|
foreach ($zeros[0] as $zero) {
|
|
|
|
if (strlen($zero) > strlen($match)) {
|
|
|
|
$match = $zero;
|
|
|
|
}
|
|
}
|
|
|
|
$cip = preg_replace('/' . $match . '/', ':', $cip, 1);
|
|
|
|
}
|
|
|
|
$cip = preg_replace('/((^:)|(:$))/', '', $cip);
|
|
$cip = preg_replace('/((^:)|(:$))/', '::', $cip);
|
|
|
|
if ('' != $netmask) {
|
|
|
|
$cip = $cip.'/'.$netmask;
|
|
|
|
}
|
|
|
|
return $cip.$prefix;
|
|
|
|
}
|
|
|
|
// }}}
|
|
// {{{ recommendedFormat()
|
|
/**
|
|
* Represent IPv6 address in RFC5952 format.
|
|
*
|
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
*
|
|
* @return String the recommended representation of IPv6-adress (hex format)
|
|
* @access public
|
|
* @see compress()
|
|
* @static
|
|
* @author koyama at hoge dot org
|
|
* @todo This method may become a part of compress() in a further releases
|
|
*/
|
|
public static function recommendedFormat($ip)
|
|
{
|
|
$compressed = self::compress($ip, true);
|
|
// RFC5952 4.2.2
|
|
// The symbol "::" MUST NOT be used to shorten just one
|
|
// 16-bit 0 field.
|
|
if ((substr_count($compressed, ':') == 7) &&
|
|
(strpos($compressed, '::') !== false)) {
|
|
$compressed = str_replace('::', ':0:', $compressed);
|
|
}
|
|
return $compressed;
|
|
}
|
|
// }}}
|
|
|
|
// {{{ isCompressible()
|
|
|
|
/**
|
|
* Checks, if an IPv6 adress can be compressed
|
|
*
|
|
* @param String $ip a valid IPv6 adress
|
|
*
|
|
* @return Boolean true, if adress can be compressed
|
|
*
|
|
* @access public
|
|
* @since 1.2.0b
|
|
* @static
|
|
* @author Manuel Schmitt
|
|
*/
|
|
public static function isCompressible($ip)
|
|
{
|
|
|
|
return (bool)($ip != Net_IPv6::compress($address));
|
|
|
|
}
|
|
|
|
// }}}
|
|
// {{{ SplitV64()
|
|
|
|
/**
|
|
* Splits an IPv6 adress into the IPv6 and a possible IPv4 part
|
|
*
|
|
* RFC 2373 allows you to note the last two parts of an IPv6 adress as
|
|
* an IPv4 compatible adress
|
|
*
|
|
* Example: 0:0:0:0:0:0:13.1.68.3
|
|
* 0:0:0:0:0:FFFF:129.144.52.38
|
|
*
|
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
* @param Boolean $uncompress if true, the address will be uncompressed
|
|
* before processing
|
|
*
|
|
* @return Array [0] contains the IPv6 part,
|
|
* [1] the IPv4 part (hex format)
|
|
* @access public
|
|
* @static
|
|
*/
|
|
public static function SplitV64($ip, $uncompress = true)
|
|
{
|
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
|
|
if ($uncompress) {
|
|
|
|
$ip = Net_IPv6::Uncompress($ip);
|
|
|
|
}
|
|
|
|
if (strstr($ip, '.')) {
|
|
|
|
$pos = strrpos($ip, ':');
|
|
|
|
if(false === $pos) {
|
|
return array("", $ip);
|
|
}
|
|
|
|
$ip[$pos] = '_';
|
|
$ipPart = explode('_', $ip);
|
|
|
|
return $ipPart;
|
|
|
|
} else {
|
|
|
|
return array($ip, "");
|
|
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ checkIPv6()
|
|
|
|
/**
|
|
* Checks an IPv6 adress
|
|
*
|
|
* Checks if the given IP is IPv6-compatible
|
|
*
|
|
* @param String $ip a valid IPv6-adress
|
|
*
|
|
* @return Boolean true if $ip is an IPv6 adress
|
|
* @access public
|
|
* @static
|
|
*/
|
|
public static function checkIPv6($ip)
|
|
{
|
|
|
|
$elements = Net_IPv6::separate($ip);
|
|
|
|
$ip = $elements[0];
|
|
|
|
if('' != $elements[1] && ( !is_numeric($elements[1]) || 0 > $elements || 128 < $elements[1])) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
$ipPart = Net_IPv6::SplitV64($ip);
|
|
$count = 0;
|
|
|
|
if (!empty($ipPart[0])) {
|
|
$ipv6 = explode(':', $ipPart[0]);
|
|
|
|
if(8 < count($ipv6)) {
|
|
return false;
|
|
}
|
|
|
|
foreach($ipv6 as $element) { // made a validate precheck
|
|
if(!preg_match('/[0-9a-fA-F]*/', $element)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
for ($i = 0; $i < count($ipv6); $i++) {
|
|
|
|
if(4 < strlen($ipv6[$i])) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
$dec = hexdec($ipv6[$i]);
|
|
$hex = strtoupper(preg_replace("/^[0]{1,3}(.*[0-9a-fA-F])$/",
|
|
"\\1",
|
|
$ipv6[$i]));
|
|
|
|
if ($ipv6[$i] >= 0 && $dec <= 65535
|
|
&& $hex == strtoupper(dechex($dec))) {
|
|
|
|
$count++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (8 == $count) {
|
|
|
|
return true;
|
|
|
|
} else if (6 == $count and !empty($ipPart[1])) {
|
|
|
|
$ipv4 = explode('.', $ipPart[1]);
|
|
$count = 0;
|
|
|
|
for ($i = 0; $i < count($ipv4); $i++) {
|
|
|
|
if ($ipv4[$i] >= 0 && (integer)$ipv4[$i] <= 255
|
|
&& preg_match("/^\d{1,3}$/", $ipv4[$i])) {
|
|
|
|
$count++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (4 == $count) {
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// }}}
|
|
|
|
// {{{ _parseAddress()
|
|
|
|
/**
|
|
* Returns the lowest and highest IPv6 address
|
|
* for a given IP and netmask specification
|
|
*
|
|
* The netmask may be a part of the $ip or
|
|
* the number of netwask bits is provided via $bits
|
|
*
|
|
* The result is an indexed array. The key 'start'
|
|
* contains the lowest possible IP adress. The key
|
|
* 'end' the highest address.
|
|
*
|
|
* @param String $ipToParse the IPv6 address
|
|
* @param String $bits the optional count of netmask bits
|
|
*
|
|
* @return Array ['start', 'end'] the lowest and highest IPv6 address
|
|
* @access public
|
|
* @static
|
|
* @author Nicholas Williams
|
|
*/
|
|
|
|
public static function parseAddress($ipToParse, $bits = null)
|
|
{
|
|
|
|
$ip = null;
|
|
$bitmask = null;
|
|
|
|
if ( null == $bits ) {
|
|
|
|
$elements = explode('/', $ipToParse);
|
|
|
|
if ( 2 == count($elements) ) {
|
|
|
|
$ip = Net_IPv6::uncompress($elements[0]);
|
|
$bitmask = $elements[1];
|
|
|
|
} else {
|
|
|
|
include_once 'PEAR.php';
|
|
|
|
return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG,
|
|
NET_IPV6_NO_NETMASK);
|
|
}
|
|
} else {
|
|
|
|
$ip = Net_IPv6::uncompress($ipToParse);
|
|
$bitmask = $bits;
|
|
|
|
}
|
|
|
|
$binNetmask = str_repeat('1', $bitmask).
|
|
str_repeat('0', 128 - $bitmask);
|
|
$maxNetmask = str_repeat('1', 128);
|
|
$netmask = Net_IPv6::_bin2Ip($binNetmask);
|
|
|
|
$startAddress = Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($ip)
|
|
& $binNetmask);
|
|
$endAddress = Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($ip)
|
|
| ($binNetmask ^ $maxNetmask));
|
|
|
|
return array('start' => $startAddress, 'end' => $endAddress);
|
|
}
|
|
|
|
// }}}
|
|
|
|
// {{{ _ip2Bin()
|
|
|
|
/**
|
|
* Converts an IPv6 address from Hex into Binary representation.
|
|
*
|
|
* @param String $ip the IP to convert (a:b:c:d:e:f:g:h),
|
|
* compressed IPs are allowed
|
|
*
|
|
* @return String the binary representation
|
|
* @access private
|
|
@ @since 1.1.0
|
|
*/
|
|
protected static function _ip2Bin($ip)
|
|
{
|
|
$binstr = '';
|
|
|
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
$ip = Net_IPv6::Uncompress($ip);
|
|
|
|
$parts = explode(':', $ip);
|
|
|
|
foreach ( $parts as $v ) {
|
|
|
|
$str = base_convert($v, 16, 2);
|
|
$binstr .= str_pad($str, 16, '0', STR_PAD_LEFT);
|
|
|
|
}
|
|
|
|
return $binstr;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _bin2Ip()
|
|
|
|
/**
|
|
* Converts an IPv6 address from Binary into Hex representation.
|
|
*
|
|
* @param String $bin the IP address as binary
|
|
*
|
|
* @return String the uncompressed Hex representation
|
|
* @access private
|
|
@ @since 1.1.0
|
|
*/
|
|
protected static function _bin2Ip($bin)
|
|
{
|
|
$ip = "";
|
|
|
|
if (strlen($bin) < 128) {
|
|
|
|
$bin = str_pad($bin, 128, '0', STR_PAD_LEFT);
|
|
|
|
}
|
|
|
|
$parts = str_split($bin, "16");
|
|
|
|
foreach ( $parts as $v ) {
|
|
|
|
$str = base_convert($v, 2, 16);
|
|
$ip .= $str.":";
|
|
|
|
}
|
|
|
|
$ip = substr($ip, 0, -1);
|
|
|
|
return $ip;
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
// }}}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* c-hanging-comment-ender-p: nil
|
|
* End:
|
|
*/
|
|
|
|
?>
|