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<?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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|
400
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*
|
|
401
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* RFC 2373, Section 2.3 describes several types of addresses in
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402
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* the IPv6 addresse space.
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403
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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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406
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* @param String $ip the IP address in Hex format,
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407
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* compressed IPs are allowed
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*
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409
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* @return int one of the addresse type constants
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410
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* @access public
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411
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* @since 1.1.0
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412
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* @static
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*
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* @see NET_IPV6_UNASSIGNED
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415
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* @see NET_IPV6_RESERVED
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416
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* @see NET_IPV6_RESERVED_NSAP
|
|
417
|
* @see NET_IPV6_RESERVED_IPX
|
|
418
|
* @see NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC
|
|
419
|
* @see NET_IPV6_UNICAST_PROVIDER
|
|
420
|
* @see NET_IPV6_MULTICAST
|
|
421
|
* @see NET_IPV6_LOCAL_LINK
|
|
422
|
* @see NET_IPV6_LOCAL_SITE
|
|
423
|
* @see NET_IPV6_IPV4MAPPING
|
|
424
|
* @see NET_IPV6_UNSPECIFIED
|
|
425
|
* @see NET_IPV6_LOOPBACK
|
|
426
|
* @see NET_IPV6_UNKNOWN_TYPE
|
|
427
|
*/
|
|
428
|
public static function getAddressType($ip)
|
|
429
|
{
|
|
430
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
431
|
$binip = Net_IPv6::_ip2Bin($ip);
|
|
432
|
|
|
433
|
if(0 == strncmp(str_repeat('0', 128), $binip, 128)) { // ::/128
|
|
434
|
|
|
435
|
return NET_IPV6_UNSPECIFIED;
|
|
436
|
|
|
437
|
} else if(0 == strncmp(str_repeat('0', 127).'1', $binip, 128)) { // ::/128
|
|
438
|
|
|
439
|
return NET_IPV6_LOOPBACK;
|
|
440
|
|
|
441
|
} else if (0 == strncmp(str_repeat('0', 80).str_repeat('1', 16), $binip, 96)) { // ::ffff/96
|
|
442
|
|
|
443
|
return NET_IPV6_IPV4MAPPING;
|
|
444
|
|
|
445
|
} else if (0 == strncmp('1111111010', $binip, 10)) {
|
|
446
|
|
|
447
|
return NET_IPV6_LOCAL_LINK;
|
|
448
|
|
|
449
|
} else if (0 == strncmp('1111111011', $binip, 10)) {
|
|
450
|
|
|
451
|
return NET_IPV6_LOCAL_SITE;
|
|
452
|
|
|
453
|
} else if (0 == strncmp('111111100', $binip, 9)) {
|
|
454
|
|
|
455
|
return NET_IPV6_UNASSIGNED;
|
|
456
|
|
|
457
|
} else if (0 == strncmp('11111111', $binip, 8)) {
|
|
458
|
|
|
459
|
return NET_IPV6_MULTICAST;
|
|
460
|
|
|
461
|
} else if (0 == strncmp('00000000', $binip, 8)) {
|
|
462
|
|
|
463
|
return NET_IPV6_RESERVED;
|
|
464
|
|
|
465
|
} else if (0 == strncmp('00000001', $binip, 8)
|
|
466
|
|| 0 == strncmp('1111110', $binip, 7)) {
|
|
467
|
|
|
468
|
return NET_IPV6_UNASSIGNED;
|
|
469
|
|
|
470
|
} else if (0 == strncmp('0000001', $binip, 7)) {
|
|
471
|
|
|
472
|
return NET_IPV6_RESERVED_NSAP;
|
|
473
|
|
|
474
|
} else if (0 == strncmp('0000010', $binip, 7)) {
|
|
475
|
|
|
476
|
return NET_IPV6_RESERVED_IPX;;
|
|
477
|
|
|
478
|
} else if (0 == strncmp('0000011', $binip, 7) ||
|
|
479
|
0 == strncmp('111110', $binip, 6) ||
|
|
480
|
0 == strncmp('11110', $binip, 5) ||
|
|
481
|
0 == strncmp('00001', $binip, 5) ||
|
|
482
|
0 == strncmp('1110', $binip, 4) ||
|
|
483
|
0 == strncmp('0001', $binip, 4) ||
|
|
484
|
0 == strncmp('001', $binip, 3) ||
|
|
485
|
0 == strncmp('011', $binip, 3) ||
|
|
486
|
0 == strncmp('101', $binip, 3) ||
|
|
487
|
0 == strncmp('110', $binip, 3)) {
|
|
488
|
|
|
489
|
return NET_IPV6_UNASSIGNED;
|
|
490
|
|
|
491
|
} else if (0 == strncmp('010', $binip, 3)) {
|
|
492
|
|
|
493
|
return NET_IPV6_UNICAST_PROVIDER;
|
|
494
|
|
|
495
|
} else if (0 == strncmp('100', $binip, 3)) {
|
|
496
|
|
|
497
|
return NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC;
|
|
498
|
|
|
499
|
}
|
|
500
|
|
|
501
|
return NET_IPV6_UNKNOWN_TYPE;
|
|
502
|
}
|
|
503
|
|
|
504
|
// }}}
|
|
505
|
// {{{ Uncompress()
|
|
506
|
|
|
507
|
/**
|
|
508
|
* Uncompresses an IPv6 adress
|
|
509
|
*
|
|
510
|
* RFC 2373 allows you to compress zeros in an adress to '::'. This
|
|
511
|
* function expects an valid IPv6 adress and expands the '::' to
|
|
512
|
* the required zeros.
|
|
513
|
*
|
|
514
|
* Example: FF01::101 -> FF01:0:0:0:0:0:0:101
|
|
515
|
* ::1 -> 0:0:0:0:0:0:0:1
|
|
516
|
*
|
|
517
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
518
|
* @param Boolean $leadingZeros if true, leading zeros are added to each
|
|
519
|
* block of the address
|
|
520
|
* (FF01::101 ->
|
|
521
|
* FF01:0000:0000:0000:0000:0000:0000:0101)
|
|
522
|
*
|
|
523
|
* @return String the uncompressed IPv6-adress (hex format)
|
|
524
|
* @access public
|
|
525
|
* @see Compress()
|
|
526
|
* @static
|
|
527
|
* @author Pascal Uhlmann
|
|
528
|
*/
|
|
529
|
public static function uncompress($ip, $leadingZeros = false)
|
|
530
|
{
|
|
531
|
|
|
532
|
$prefix = Net_IPv6::getPrefixLength($ip);
|
|
533
|
|
|
534
|
if (false === $prefix) {
|
|
535
|
|
|
536
|
$prefix = '';
|
|
537
|
|
|
538
|
} else {
|
|
539
|
|
|
540
|
$ip = Net_IPv6::removePrefixLength($ip);
|
|
541
|
$prefix = '/'.$prefix;
|
|
542
|
|
|
543
|
}
|
|
544
|
|
|
545
|
$netmask = Net_IPv6::getNetmaskSpec($ip);
|
|
546
|
$uip = Net_IPv6::removeNetmaskSpec($ip);
|
|
547
|
|
|
548
|
$c1 = -1;
|
|
549
|
$c2 = -1;
|
|
550
|
|
|
551
|
if (false !== strpos($uip, '::') ) {
|
|
552
|
|
|
553
|
list($ip1, $ip2) = explode('::', $uip, 2);
|
|
554
|
|
|
555
|
if ("" == $ip1) {
|
|
556
|
|
|
557
|
$c1 = -1;
|
|
558
|
|
|
559
|
} else {
|
|
560
|
|
|
561
|
$pos = 0;
|
|
562
|
|
|
563
|
if (0 < ($pos = substr_count($ip1, ':'))) {
|
|
564
|
|
|
565
|
$c1 = $pos;
|
|
566
|
|
|
567
|
} else {
|
|
568
|
|
|
569
|
$c1 = 0;
|
|
570
|
|
|
571
|
}
|
|
572
|
}
|
|
573
|
if ("" == $ip2) {
|
|
574
|
|
|
575
|
$c2 = -1;
|
|
576
|
|
|
577
|
} else {
|
|
578
|
|
|
579
|
$pos = 0;
|
|
580
|
|
|
581
|
if (0 < ($pos = substr_count($ip2, ':'))) {
|
|
582
|
|
|
583
|
$c2 = $pos;
|
|
584
|
|
|
585
|
} else {
|
|
586
|
|
|
587
|
$c2 = 0;
|
|
588
|
|
|
589
|
}
|
|
590
|
|
|
591
|
}
|
|
592
|
|
|
593
|
if (strstr($ip2, '.')) {
|
|
594
|
|
|
595
|
$c2++;
|
|
596
|
|
|
597
|
}
|
|
598
|
if (-1 == $c1 && -1 == $c2) { // ::
|
|
599
|
|
|
600
|
$uip = "0:0:0:0:0:0:0:0";
|
|
601
|
|
|
602
|
} else if (-1 == $c1) { // ::xxx
|
|
603
|
|
|
604
|
$fill = str_repeat('0:', max(1, 7-$c2));
|
|
605
|
$uip = str_replace('::', $fill, $uip);
|
|
606
|
|
|
607
|
} else if (-1 == $c2) { // xxx::
|
|
608
|
|
|
609
|
$fill = str_repeat(':0', max(1, 7-$c1));
|
|
610
|
$uip = str_replace('::', $fill, $uip);
|
|
611
|
|
|
612
|
} else { // xxx::xxx
|
|
613
|
|
|
614
|
$fill = str_repeat(':0:', 6-$c2-$c1);
|
|
615
|
$uip = str_replace('::', $fill, $uip);
|
|
616
|
$uip = str_replace('::', ':', $uip);
|
|
617
|
|
|
618
|
}
|
|
619
|
}
|
|
620
|
|
|
621
|
if(true == $leadingZeros) {
|
|
622
|
|
|
623
|
$uipT = array();
|
|
624
|
$uiparts = explode(':', $uip);
|
|
625
|
|
|
626
|
foreach($uiparts as $p) {
|
|
627
|
|
|
628
|
$uipT[] = sprintf('%04s', $p);
|
|
629
|
|
|
630
|
}
|
|
631
|
|
|
632
|
$uip = implode(':', $uipT);
|
|
633
|
}
|
|
634
|
|
|
635
|
if ('' != $netmask) {
|
|
636
|
|
|
637
|
$uip = $uip.'/'.$netmask;
|
|
638
|
|
|
639
|
}
|
|
640
|
|
|
641
|
return $uip.$prefix;
|
|
642
|
}
|
|
643
|
|
|
644
|
// }}}
|
|
645
|
// {{{ Compress()
|
|
646
|
|
|
647
|
/**
|
|
648
|
* Compresses an IPv6 adress
|
|
649
|
*
|
|
650
|
* RFC 2373 allows you to compress zeros in an adress to '::'. This
|
|
651
|
* function expects an valid IPv6 adress and compresses successive zeros
|
|
652
|
* to '::'
|
|
653
|
*
|
|
654
|
* Example: FF01:0:0:0:0:0:0:101 -> FF01::101
|
|
655
|
* 0:0:0:0:0:0:0:1 -> ::1
|
|
656
|
*
|
|
657
|
* Whe $ip is an already compressed adress the methode returns the value as is,
|
|
658
|
* also if the adress can be compressed further.
|
|
659
|
*
|
|
660
|
* Example: FF01::0:1 -> FF01::0:1
|
|
661
|
*
|
|
662
|
* To enforce maximum compression, you can set the second argument $force to true.
|
|
663
|
*
|
|
664
|
* Example: FF01::0:1 -> FF01::1
|
|
665
|
*
|
|
666
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
667
|
* @param boolean $force if true the adress will be compresses as best as possible (since 1.2.0)
|
|
668
|
*
|
|
669
|
* @return tring the compressed IPv6-adress (hex format)
|
|
670
|
* @access public
|
|
671
|
* @see Uncompress()
|
|
672
|
* @static
|
|
673
|
* @author elfrink at introweb dot nl
|
|
674
|
*/
|
|
675
|
public static function compress($ip, $force = false)
|
|
676
|
{
|
|
677
|
|
|
678
|
if(false !== strpos($ip, '::')) { // its already compressed
|
|
679
|
|
|
680
|
if(true == $force) {
|
|
681
|
|
|
682
|
$ip = Net_IPv6::uncompress($ip);
|
|
683
|
|
|
684
|
} else {
|
|
685
|
|
|
686
|
return $ip;
|
|
687
|
|
|
688
|
}
|
|
689
|
|
|
690
|
}
|
|
691
|
|
|
692
|
$prefix = Net_IPv6::getPrefixLength($ip);
|
|
693
|
|
|
694
|
if (false === $prefix) {
|
|
695
|
|
|
696
|
$prefix = '';
|
|
697
|
|
|
698
|
} else {
|
|
699
|
|
|
700
|
$ip = Net_IPv6::removePrefixLength($ip);
|
|
701
|
$prefix = '/'.$prefix;
|
|
702
|
|
|
703
|
}
|
|
704
|
|
|
705
|
$netmask = Net_IPv6::getNetmaskSpec($ip);
|
|
706
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
707
|
|
|
708
|
$ipp = explode(':', $ip);
|
|
709
|
|
|
710
|
for ($i = 0; $i < count($ipp); $i++) {
|
|
711
|
|
|
712
|
$ipp[$i] = dechex(hexdec($ipp[$i]));
|
|
713
|
|
|
714
|
}
|
|
715
|
|
|
716
|
$cip = ':' . join(':', $ipp) . ':';
|
|
717
|
|
|
718
|
preg_match_all("/(:0)(:0)+/", $cip, $zeros);
|
|
719
|
|
|
720
|
if (count($zeros[0]) > 0) {
|
|
721
|
|
|
722
|
$match = '';
|
|
723
|
|
|
724
|
foreach ($zeros[0] as $zero) {
|
|
725
|
|
|
726
|
if (strlen($zero) > strlen($match)) {
|
|
727
|
|
|
728
|
$match = $zero;
|
|
729
|
|
|
730
|
}
|
|
731
|
}
|
|
732
|
|
|
733
|
$cip = preg_replace('/' . $match . '/', ':', $cip, 1);
|
|
734
|
|
|
735
|
}
|
|
736
|
|
|
737
|
if ($cip != "::") {
|
|
738
|
$cip = preg_replace('/((^:)|(:$))/', '', $cip);
|
|
739
|
$cip = preg_replace('/((^:)|(:$))/', '::', $cip);
|
|
740
|
}
|
|
741
|
|
|
742
|
if ('' != $netmask) {
|
|
743
|
|
|
744
|
$cip = $cip.'/'.$netmask;
|
|
745
|
|
|
746
|
}
|
|
747
|
|
|
748
|
return $cip.$prefix;
|
|
749
|
|
|
750
|
}
|
|
751
|
|
|
752
|
// }}}
|
|
753
|
// {{{ recommendedFormat()
|
|
754
|
/**
|
|
755
|
* Represent IPv6 address in RFC5952 format.
|
|
756
|
*
|
|
757
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
758
|
*
|
|
759
|
* @return String the recommended representation of IPv6-adress (hex format)
|
|
760
|
* @access public
|
|
761
|
* @see compress()
|
|
762
|
* @static
|
|
763
|
* @author koyama at hoge dot org
|
|
764
|
* @todo This method may become a part of compress() in a further releases
|
|
765
|
*/
|
|
766
|
public static function recommendedFormat($ip)
|
|
767
|
{
|
|
768
|
$compressed = self::compress($ip, true);
|
|
769
|
// RFC5952 4.2.2
|
|
770
|
// The symbol "::" MUST NOT be used to shorten just one
|
|
771
|
// 16-bit 0 field.
|
|
772
|
if ((substr_count($compressed, ':') == 7) &&
|
|
773
|
(strpos($compressed, '::') !== false)) {
|
|
774
|
$compressed = str_replace('::', ':0:', $compressed);
|
|
775
|
}
|
|
776
|
return $compressed;
|
|
777
|
}
|
|
778
|
// }}}
|
|
779
|
|
|
780
|
// {{{ isCompressible()
|
|
781
|
|
|
782
|
/**
|
|
783
|
* Checks, if an IPv6 adress can be compressed
|
|
784
|
*
|
|
785
|
* @param String $ip a valid IPv6 adress
|
|
786
|
*
|
|
787
|
* @return Boolean true, if adress can be compressed
|
|
788
|
*
|
|
789
|
* @access public
|
|
790
|
* @since 1.2.0b
|
|
791
|
* @static
|
|
792
|
* @author Manuel Schmitt
|
|
793
|
*/
|
|
794
|
public static function isCompressible($ip)
|
|
795
|
{
|
|
796
|
|
|
797
|
return (bool)($ip != Net_IPv6::compress($address));
|
|
798
|
|
|
799
|
}
|
|
800
|
|
|
801
|
// }}}
|
|
802
|
// {{{ SplitV64()
|
|
803
|
|
|
804
|
/**
|
|
805
|
* Splits an IPv6 adress into the IPv6 and a possible IPv4 part
|
|
806
|
*
|
|
807
|
* RFC 2373 allows you to note the last two parts of an IPv6 adress as
|
|
808
|
* an IPv4 compatible adress
|
|
809
|
*
|
|
810
|
* Example: 0:0:0:0:0:0:13.1.68.3
|
|
811
|
* 0:0:0:0:0:FFFF:129.144.52.38
|
|
812
|
*
|
|
813
|
* @param String $ip a valid IPv6-adress (hex format)
|
|
814
|
* @param Boolean $uncompress if true, the address will be uncompressed
|
|
815
|
* before processing
|
|
816
|
*
|
|
817
|
* @return Array [0] contains the IPv6 part,
|
|
818
|
* [1] the IPv4 part (hex format)
|
|
819
|
* @access public
|
|
820
|
* @static
|
|
821
|
*/
|
|
822
|
public static function SplitV64($ip, $uncompress = true)
|
|
823
|
{
|
|
824
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
825
|
|
|
826
|
if ($uncompress) {
|
|
827
|
|
|
828
|
$ip = Net_IPv6::Uncompress($ip);
|
|
829
|
|
|
830
|
}
|
|
831
|
|
|
832
|
if (strstr($ip, '.')) {
|
|
833
|
|
|
834
|
$pos = strrpos($ip, ':');
|
|
835
|
|
|
836
|
if(false === $pos) {
|
|
837
|
return array("", $ip);
|
|
838
|
}
|
|
839
|
|
|
840
|
$ip{$pos} = '_';
|
|
841
|
$ipPart = explode('_', $ip);
|
|
842
|
|
|
843
|
return $ipPart;
|
|
844
|
|
|
845
|
} else {
|
|
846
|
|
|
847
|
return array($ip, "");
|
|
848
|
|
|
849
|
}
|
|
850
|
}
|
|
851
|
|
|
852
|
// }}}
|
|
853
|
// {{{ checkIPv6()
|
|
854
|
|
|
855
|
/**
|
|
856
|
* Checks an IPv6 adress
|
|
857
|
*
|
|
858
|
* Checks if the given IP is IPv6-compatible
|
|
859
|
*
|
|
860
|
* @param String $ip a valid IPv6-adress
|
|
861
|
*
|
|
862
|
* @return Boolean true if $ip is an IPv6 adress
|
|
863
|
* @access public
|
|
864
|
* @static
|
|
865
|
*/
|
|
866
|
public static function checkIPv6($ip)
|
|
867
|
{
|
|
868
|
|
|
869
|
$elements = Net_IPv6::separate($ip);
|
|
870
|
|
|
871
|
$ip = $elements[0];
|
|
872
|
|
|
873
|
if('' != $elements[1] && ( !is_numeric($elements[1]) || 0 > $elements || 128 < $elements[1])) {
|
|
874
|
|
|
875
|
return false;
|
|
876
|
|
|
877
|
}
|
|
878
|
|
|
879
|
$ipPart = Net_IPv6::SplitV64($ip);
|
|
880
|
$count = 0;
|
|
881
|
|
|
882
|
if (!empty($ipPart[0])) {
|
|
883
|
$ipv6 = explode(':', $ipPart[0]);
|
|
884
|
|
|
885
|
if(8 < count($ipv6)) {
|
|
886
|
return false;
|
|
887
|
}
|
|
888
|
|
|
889
|
foreach($ipv6 as $element) { // made a validate precheck
|
|
890
|
if(!preg_match('/[0-9a-fA-F]*/', $element)) {
|
|
891
|
return false;
|
|
892
|
}
|
|
893
|
}
|
|
894
|
|
|
895
|
for ($i = 0; $i < count($ipv6); $i++) {
|
|
896
|
|
|
897
|
if(4 < strlen($ipv6[$i])) {
|
|
898
|
|
|
899
|
return false;
|
|
900
|
|
|
901
|
}
|
|
902
|
|
|
903
|
$dec = hexdec($ipv6[$i]);
|
|
904
|
$hex = strtoupper(preg_replace("/^[0]{1,3}(.*[0-9a-fA-F])$/",
|
|
905
|
"\\1",
|
|
906
|
$ipv6[$i]));
|
|
907
|
|
|
908
|
if ($ipv6[$i] >= 0 && $dec <= 65535
|
|
909
|
&& $hex == strtoupper(dechex($dec))) {
|
|
910
|
|
|
911
|
$count++;
|
|
912
|
|
|
913
|
}
|
|
914
|
|
|
915
|
}
|
|
916
|
|
|
917
|
if (8 == $count and empty($ipPart[1])) {
|
|
918
|
|
|
919
|
return true;
|
|
920
|
|
|
921
|
} else if (6 == $count and !empty($ipPart[1])) {
|
|
922
|
|
|
923
|
$ipv4 = explode('.', $ipPart[1]);
|
|
924
|
$count = 0;
|
|
925
|
|
|
926
|
for ($i = 0; $i < count($ipv4); $i++) {
|
|
927
|
|
|
928
|
if ($ipv4[$i] >= 0 && (integer)$ipv4[$i] <= 255
|
|
929
|
&& preg_match("/^\d{1,3}$/", $ipv4[$i])) {
|
|
930
|
|
|
931
|
$count++;
|
|
932
|
|
|
933
|
}
|
|
934
|
|
|
935
|
}
|
|
936
|
|
|
937
|
if (4 == $count) {
|
|
938
|
|
|
939
|
return true;
|
|
940
|
|
|
941
|
}
|
|
942
|
|
|
943
|
} else {
|
|
944
|
|
|
945
|
return false;
|
|
946
|
|
|
947
|
}
|
|
948
|
|
|
949
|
} else {
|
|
950
|
|
|
951
|
return false;
|
|
952
|
|
|
953
|
}
|
|
954
|
|
|
955
|
}
|
|
956
|
|
|
957
|
// }}}
|
|
958
|
|
|
959
|
// {{{ _parseAddress()
|
|
960
|
|
|
961
|
/**
|
|
962
|
* Returns the lowest and highest IPv6 address
|
|
963
|
* for a given IP and netmask specification
|
|
964
|
*
|
|
965
|
* The netmask may be a part of the $ip or
|
|
966
|
* the number of netwask bits is provided via $bits
|
|
967
|
*
|
|
968
|
* The result is an indexed array. The key 'start'
|
|
969
|
* contains the lowest possible IP adress. The key
|
|
970
|
* 'end' the highest address.
|
|
971
|
*
|
|
972
|
* @param String $ipToParse the IPv6 address
|
|
973
|
* @param String $bits the optional count of netmask bits
|
|
974
|
*
|
|
975
|
* @return Array ['start', 'end'] the lowest and highest IPv6 address
|
|
976
|
* @access public
|
|
977
|
* @static
|
|
978
|
* @author Nicholas Williams
|
|
979
|
*/
|
|
980
|
|
|
981
|
public static function parseAddress($ipToParse, $bits = null)
|
|
982
|
{
|
|
983
|
|
|
984
|
$ip = null;
|
|
985
|
$bitmask = null;
|
|
986
|
|
|
987
|
if ( null == $bits ) {
|
|
988
|
|
|
989
|
$elements = explode('/', $ipToParse);
|
|
990
|
|
|
991
|
if ( 2 == count($elements) ) {
|
|
992
|
|
|
993
|
$ip = Net_IPv6::uncompress($elements[0]);
|
|
994
|
$bitmask = $elements[1];
|
|
995
|
|
|
996
|
} else {
|
|
997
|
|
|
998
|
include_once 'PEAR.php';
|
|
999
|
|
|
1000
|
return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG,
|
|
1001
|
NET_IPV6_NO_NETMASK);
|
|
1002
|
}
|
|
1003
|
} else {
|
|
1004
|
|
|
1005
|
$ip = Net_IPv6::uncompress($ipToParse);
|
|
1006
|
$bitmask = $bits;
|
|
1007
|
|
|
1008
|
}
|
|
1009
|
|
|
1010
|
$binNetmask = str_repeat('1', $bitmask).
|
|
1011
|
str_repeat('0', 128 - $bitmask);
|
|
1012
|
$maxNetmask = str_repeat('1', 128);
|
|
1013
|
$netmask = Net_IPv6::_bin2Ip($binNetmask);
|
|
1014
|
|
|
1015
|
$startAddress = Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($ip)
|
|
1016
|
& $binNetmask);
|
|
1017
|
$endAddress = Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($ip)
|
|
1018
|
| ($binNetmask ^ $maxNetmask));
|
|
1019
|
|
|
1020
|
return array('start' => $startAddress, 'end' => $endAddress);
|
|
1021
|
}
|
|
1022
|
|
|
1023
|
// }}}
|
|
1024
|
|
|
1025
|
// {{{ _ip2Bin()
|
|
1026
|
|
|
1027
|
/**
|
|
1028
|
* Converts an IPv6 address from Hex into Binary representation.
|
|
1029
|
*
|
|
1030
|
* @param String $ip the IP to convert (a:b:c:d:e:f:g:h),
|
|
1031
|
* compressed IPs are allowed
|
|
1032
|
*
|
|
1033
|
* @return String the binary representation
|
|
1034
|
* @access private
|
|
1035
|
@ @since 1.1.0
|
|
1036
|
*/
|
|
1037
|
protected static function _ip2Bin($ip)
|
|
1038
|
{
|
|
1039
|
$binstr = '';
|
|
1040
|
|
|
1041
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
|
1042
|
$ip = Net_IPv6::Uncompress($ip);
|
|
1043
|
|
|
1044
|
$parts = explode(':', $ip);
|
|
1045
|
|
|
1046
|
foreach ( $parts as $v ) {
|
|
1047
|
|
|
1048
|
$str = base_convert($v, 16, 2);
|
|
1049
|
$binstr .= str_pad($str, 16, '0', STR_PAD_LEFT);
|
|
1050
|
|
|
1051
|
}
|
|
1052
|
|
|
1053
|
return $binstr;
|
|
1054
|
}
|
|
1055
|
|
|
1056
|
// }}}
|
|
1057
|
// {{{ _bin2Ip()
|
|
1058
|
|
|
1059
|
/**
|
|
1060
|
* Converts an IPv6 address from Binary into Hex representation.
|
|
1061
|
*
|
|
1062
|
* @param String $bin the IP address as binary
|
|
1063
|
*
|
|
1064
|
* @return String the uncompressed Hex representation
|
|
1065
|
* @access private
|
|
1066
|
@ @since 1.1.0
|
|
1067
|
*/
|
|
1068
|
protected static function _bin2Ip($bin)
|
|
1069
|
{
|
|
1070
|
$ip = "";
|
|
1071
|
|
|
1072
|
if (strlen($bin) < 128) {
|
|
1073
|
|
|
1074
|
$bin = str_pad($bin, 128, '0', STR_PAD_LEFT);
|
|
1075
|
|
|
1076
|
}
|
|
1077
|
|
|
1078
|
$parts = str_split($bin, "16");
|
|
1079
|
|
|
1080
|
foreach ( $parts as $v ) {
|
|
1081
|
|
|
1082
|
$str = base_convert($v, 2, 16);
|
|
1083
|
$ip .= $str.":";
|
|
1084
|
|
|
1085
|
}
|
|
1086
|
|
|
1087
|
$ip = substr($ip, 0, -1);
|
|
1088
|
|
|
1089
|
return $ip;
|
|
1090
|
}
|
|
1091
|
|
|
1092
|
// }}}
|
|
1093
|
}
|
|
1094
|
// }}}
|
|
1095
|
|
|
1096
|
/*
|
|
1097
|
* Local variables:
|
|
1098
|
* tab-width: 4
|
|
1099
|
* c-basic-offset: 4
|
|
1100
|
* c-hanging-comment-ender-p: nil
|
|
1101
|
* End:
|
|
1102
|
*/
|
|
1103
|
|
|
1104
|
?>
|