1103 lines
26 KiB
PHP
1103 lines
26 KiB
PHP
|
<?php
|
||
|
|
||
|
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
|
||
|
|
||
|
/**
|
||
|
* This file contains the implementation of the Net_IPv6 class
|
||
|
*
|
||
|
* PHP versions 4 and 5
|
||
|
*
|
||
|
* LICENSE: This source file is subject to the New BSD license, that is
|
||
|
* available through the world-wide-web at
|
||
|
* http://www.opensource.org/licenses/bsd-license.php
|
||
|
* If you did not receive a copy of the new BSDlicense and are unable
|
||
|
* to obtain it through the world-wide-web, please send a note to
|
||
|
* license@php.net so we can mail you a copy immediately
|
||
|
*
|
||
|
* @category Net
|
||
|
* @package Net_IPv6
|
||
|
* @author Alexander Merz <alexander.merz@web.de>
|
||
|
* @copyright 2003-2005 The PHP Group
|
||
|
* @license BSD License http://www.opensource.org/licenses/bsd-license.php
|
||
|
* @version CVS: $Id: IPv6.php 338818 2016-03-25 12:15:02Z alexmerz $
|
||
|
* @link http://pear.php.net/package/Net_IPv6
|
||
|
*/
|
||
|
|
||
|
// {{{ constants
|
||
|
|
||
|
/**
|
||
|
* Error message if netmask bits was not found
|
||
|
* @see isInNetmask
|
||
|
*/
|
||
|
define("NET_IPV6_NO_NETMASK_MSG", "Netmask length not found");
|
||
|
|
||
|
/**
|
||
|
* Error code if netmask bits was not found
|
||
|
* @see isInNetmask
|
||
|
*/
|
||
|
define("NET_IPV6_NO_NETMASK", 10);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Unassigned (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_UNASSIGNED", 1);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Reserved (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_RESERVED", 11);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Reserved for NSAP Allocation (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_RESERVED_NSAP", 12);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Reserved for IPX Allocation (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_RESERVED_IPX", 13);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Reserved for Geographic-Based Unicast Addresses
|
||
|
* (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC", 14);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Provider-Based Unicast Address (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_UNICAST_PROVIDER", 22);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Multicast Addresses (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_MULTICAST", 31);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Link Local Use Addresses (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_LOCAL_LINK", 42);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Link Local Use Addresses (RFC 1884, Section 2.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_LOCAL_SITE", 43);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Address range to embedded IPv4 ip in an IPv6 address (RFC 4291, Section 2.5.5)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_IPV4MAPPING", 51);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Unspecified (RFC 4291, Section 2.5.2)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_UNSPECIFIED", 52);
|
||
|
|
||
|
/**
|
||
|
* Address Type: Unspecified (RFC 4291, Section 2.5.3)
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_LOOPBACK", 53);
|
||
|
|
||
|
/**
|
||
|
* Address Type: address can not assigned to a specific type
|
||
|
* @see getAddressType()
|
||
|
*/
|
||
|
define("NET_IPV6_UNKNOWN_TYPE", 1001);
|
||
|
|
||
|
// }}}
|
||
|
// {{{ Net_IPv6
|
||
|
|
||
|
/**
|
||
|
* Class to validate and to work with IPv6 addresses.
|
||
|
*
|
||
|
* @category Net
|
||
|
* @package Net_IPv6
|
||
|
* @author Alexander Merz <alexander.merz@web.de>
|
||
|
* @author <elfrink at introweb dot nl>
|
||
|
* @author Josh Peck <jmp at joshpeck dot org>
|
||
|
* @copyright 2003-2010 The PHP Group
|
||
|
* @license BSD License http://www.opensource.org/licenses/bsd-license.php
|
||
|
* @version Release: 1.1.0RC5
|
||
|
* @link http://pear.php.net/package/Net_IPv6
|
||
|
*/
|
||
|
class Net_IPv6
|
||
|
{
|
||
|
|
||
|
// {{{ separate()
|
||
|
/**
|
||
|
* Separates an IPv6 address into the address and a prefix length part
|
||
|
*
|
||
|
* @param String $ip the (compressed) IP as Hex representation
|
||
|
*
|
||
|
* @return Array the first element is the IP, the second the prefix length
|
||
|
* @since 1.2.0
|
||
|
* @access public
|
||
|
* @static
|
||
|
*/
|
||
|
public static function separate($ip)
|
||
|
{
|
||
|
|
||
|
$addr = $ip;
|
||
|
$spec = '';
|
||
|
|
||
|
if(false === strrpos($ip, '/')) {
|
||
|
|
||
|
return array($addr, $spec);
|
||
|
|
||
|
}
|
||
|
|
||
|
$elements = explode('/', $ip);
|
||
|
|
||
|
if(2 == count($elements)) {
|
||
|
|
||
|
$addr = $elements[0];
|
||
|
$spec = $elements[1];
|
||
|
|
||
|
}
|
||
|
|
||
|
return array($addr, $spec);
|
||
|
|
||
|
}
|
||
|
// }}}
|
||
|
|
||
|
// {{{ removeNetmaskSpec()
|
||
|
|
||
|
/**
|
||
|
* Removes a possible existing prefix length/ netmask specification at an IP addresse.
|
||
|
*
|
||
|
* @param String $ip the (compressed) IP as Hex representation
|
||
|
*
|
||
|
* @return String the IP without netmask length
|
||
|
* @since 1.1.0
|
||
|
* @access public
|
||
|
* @static
|
||
|
*/
|
||
|
public static function removeNetmaskSpec($ip)
|
||
|
{
|
||
|
|
||
|
$elements = Net_IPv6::separate($ip);
|
||
|
|
||
|
return $elements[0];
|
||
|
|
||
|
}
|
||
|
// }}}
|
||
|
// {{{ removePrefixLength()
|
||
|
|
||
|
/**
|
||
|
* Tests for a prefix length specification in the address
|
||
|
* and removes the prefix length, if exists
|
||
|
*
|
||
|
* The method is technically identical to removeNetmaskSpec() and
|
||
|
* will be dropped in a future release.
|
||
|
*
|
||
|
* @param String $ip a valid ipv6 address
|
||
|
*
|
||
|
* @return String the address without a prefix length
|
||
|
* @access public
|
||
|
* @static
|
||
|
* @see removeNetmaskSpec()
|
||
|
* @deprecated
|
||
|
*/
|
||
|
public static function removePrefixLength($ip)
|
||
|
{
|
||
|
$pos = strrpos($ip, '/');
|
||
|
|
||
|
if (false !== $pos) {
|
||
|
|
||
|
return substr($ip, 0, $pos);
|
||
|
|
||
|
}
|
||
|
|
||
|
return $ip;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ getNetmaskSpec()
|
||
|
|
||
|
/**
|
||
|
* Returns a possible existing prefix length/netmask specification on an IP addresse.
|
||
|
*
|
||
|
* @param String $ip the (compressed) IP as Hex representation
|
||
|
*
|
||
|
* @return String the netmask spec
|
||
|
* @since 1.1.0
|
||
|
* @access public
|
||
|
* @static
|
||
|
*/
|
||
|
public static function getNetmaskSpec($ip)
|
||
|
{
|
||
|
|
||
|
$elements = Net_IPv6::separate($ip);
|
||
|
|
||
|
return $elements[1];
|
||
|
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ getPrefixLength()
|
||
|
|
||
|
/**
|
||
|
* Tests for a prefix length specification in the address
|
||
|
* and returns the prefix length, if exists
|
||
|
*
|
||
|
* The method is technically identical to getNetmaskSpec() and
|
||
|
* will be dropped in a future release.
|
||
|
*
|
||
|
* @param String $ip a valid ipv6 address
|
||
|
*
|
||
|
* @return Mixed the prefix as String or false, if no prefix was found
|
||
|
* @access public
|
||
|
* @static
|
||
|
* @deprecated
|
||
|
*/
|
||
|
public static function getPrefixLength($ip)
|
||
|
{
|
||
|
if (preg_match("/^([0-9a-fA-F:]{2,39})\/(\d{1,3})*$/",
|
||
|
$ip, $matches)) {
|
||
|
|
||
|
return $matches[2];
|
||
|
|
||
|
} else {
|
||
|
|
||
|
return false;
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ getNetmask()
|
||
|
|
||
|
/**
|
||
|
* Calculates the network prefix based on the netmask bits.
|
||
|
*
|
||
|
* @param String $ip the (compressed) IP in Hex format
|
||
|
* @param int $bits if the number of netmask bits is not part of the IP
|
||
|
* you must provide the number of bits
|
||
|
*
|
||
|
* @return String the network prefix
|
||
|
* @since 1.1.0
|
||
|
* @access public
|
||
|
* @static
|
||
|
*/
|
||
|
public static function getNetmask($ip, $bits = null)
|
||
|
{
|
||
|
if (null==$bits) {
|
||
|
|
||
|
$elements = explode('/', $ip);
|
||
|
|
||
|
if (2 == count($elements)) {
|
||
|
|
||
|
$addr = $elements[0];
|
||
|
$bits = $elements[1];
|
||
|
|
||
|
} else {
|
||
|
|
||
|
include_once 'PEAR.php';
|
||
|
|
||
|
return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG,
|
||
|
NET_IPV6_NO_NETMASK);
|
||
|
}
|
||
|
|
||
|
} else {
|
||
|
|
||
|
$addr = $ip;
|
||
|
|
||
|
}
|
||
|
|
||
|
$addr = Net_IPv6::uncompress($addr);
|
||
|
$binNetmask = str_repeat('1', $bits).str_repeat('0', 128 - $bits);
|
||
|
|
||
|
return Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($addr) & $binNetmask);
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ isInNetmask()
|
||
|
|
||
|
/**
|
||
|
* Checks if an (compressed) IP is in a specific address space.
|
||
|
*
|
||
|
* IF the IP does not contains the number of netmask bits (F8000::FFFF/16)
|
||
|
* then you have to use the $bits parameter.
|
||
|
*
|
||
|
* @param String $ip the IP to check (eg. F800::FFFF)
|
||
|
* @param String $netmask the netmask (eg F800::)
|
||
|
* @param int $bits the number of netmask bits to compare,
|
||
|
* if not given in $ip
|
||
|
*
|
||
|
* @return boolean true if $ip is in the netmask
|
||
|
* @since 1.1.0
|
||
|
* @access public
|
||
|
* @static
|
||
|
*/
|
||
|
public static function isInNetmask($ip, $netmask, $bits=null)
|
||
|
{
|
||
|
// try to get the bit count
|
||
|
|
||
|
if (null == $bits) {
|
||
|
|
||
|
$elements = explode('/', $ip);
|
||
|
|
||
|
if (2 == count($elements)) {
|
||
|
|
||
|
$ip = $elements[0];
|
||
|
$bits = $elements[1];
|
||
|
|
||
|
} else if (null == $bits) {
|
||
|
|
||
|
$elements = explode('/', $netmask);
|
||
|
|
||
|
if (2 == count($elements)) {
|
||
|
|
||
|
$netmask = $elements[0];
|
||
|
$bits = $elements[1];
|
||
|
|
||
|
}
|
||
|
|
||
|
if (null == $bits) {
|
||
|
|
||
|
include_once 'PEAR.php';
|
||
|
return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG,
|
||
|
NET_IPV6_NO_NETMASK);
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
$binIp = Net_IPv6::_ip2Bin(Net_IPv6::removeNetmaskSpec($ip));
|
||
|
$binNetmask = Net_IPv6::_ip2Bin(Net_IPv6::removeNetmaskSpec($netmask));
|
||
|
|
||
|
if (null != $bits
|
||
|
&& "" != $bits
|
||
|
&& 0 == strncmp($binNetmask, $binIp, $bits)) {
|
||
|
|
||
|
return true;
|
||
|
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ getAddressType()
|
||
|
|
||
|
/**
|
||
|
* Returns the type of an IPv6 address.
|
||
|
*
|
||
|
* RFC 2373, Section 2.3 describes several types of addresses in
|
||
|
* the IPv6 addresse space.
|
||
|
* Several addresse types are markers for reserved spaces and as
|
||
|
* consequence a subject to change.
|
||
|
*
|
||
|
* @param String $ip the IP address in Hex format,
|
||
|
* compressed IPs are allowed
|
||
|
*
|
||
|
* @return int one of the addresse type constants
|
||
|
* @access public
|
||
|
* @since 1.1.0
|
||
|
* @static
|
||
|
*
|
||
|
* @see NET_IPV6_UNASSIGNED
|
||
|
* @see NET_IPV6_RESERVED
|
||
|
* @see NET_IPV6_RESERVED_NSAP
|
||
|
* @see NET_IPV6_RESERVED_IPX
|
||
|
* @see NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC
|
||
|
* @see NET_IPV6_UNICAST_PROVIDER
|
||
|
* @see NET_IPV6_MULTICAST
|
||
|
* @see NET_IPV6_LOCAL_LINK
|
||
|
* @see NET_IPV6_LOCAL_SITE
|
||
|
* @see NET_IPV6_IPV4MAPPING
|
||
|
* @see NET_IPV6_UNSPECIFIED
|
||
|
* @see NET_IPV6_LOOPBACK
|
||
|
* @see NET_IPV6_UNKNOWN_TYPE
|
||
|
*/
|
||
|
public static function getAddressType($ip)
|
||
|
{
|
||
|
$ip = Net_IPv6::removeNetmaskSpec($ip);
|
||
|
$binip = Net_IPv6::_ip2Bin($ip);
|
||
|
|
||
|
if(0 == strncmp(str_repeat('0', 128), $binip, 128)) { // ::/128
|
||
|
|
||
|
return NET_IPV6_UNSPECIFIED;
|
||
|
|
||
|
} else if(0 == strncmp(str_repeat('0', 127).'1', $binip, 128)) { // ::/128
|
||
|
|
||
|
return NET_IPV6_LOOPBACK;
|
||
|
|
||
|
} else if (0 == strncmp(str_repeat('0', 80).str_repeat('1', 16), $binip, 96)) { // ::ffff/96
|
||
|
|
||
|
return NET_IPV6_IPV4MAPPING;
|
||
|
|
||
|
} else if (0 == strncmp('1111111010', $binip, 10)) {
|
||
|
|
||
|
return NET_IPV6_LOCAL_LINK;
|
||
|
|
||
|
} else if (0 == strncmp('1111111011', $binip, 10)) {
|
||
|
|
||
|
return NET_IPV6_LOCAL_SITE;
|
||
|
|
||
|
} else if (0 == strncmp('111111100', $binip, 9)) {
|
||
|
|
||
|
return NET_IPV6_UNASSIGNED;
|
||
|
|
||
|
} else if (0 == strncmp('11111111', $binip, 8)) {
|
||
|
|
||
|
return NET_IPV6_MULTICAST;
|
||
|
|
||
|
} else if (0 == strncmp('00000000', $binip, 8)) {
|
||
|
|
||
|
return NET_IPV6_RESERVED;
|
||
|
|
||
|
} else if (0 == strncmp('00000001', $binip, 8)
|
||
|
|| 0 == strncmp('1111110', $binip, 7)) {
|
||
|
|
||
|
return NET_IPV6_UNASSIGNED;
|
||
|
|
||
|
} else if (0 == strncmp('0000001', $binip, 7)) {
|
||
|
|
||
|
return NET_IPV6_RESERVED_NSAP;
|
||
|
|
||
|
} else if (0 == strncmp('0000010', $binip, 7)) {
|
||
|
|
||
|
return NET_IPV6_RESERVED_IPX;;
|
||
|
|
||
|
} else if (0 == strncmp('0000011', $binip, 7) ||
|
||
|
0 == strncmp('111110', $binip, 6) ||
|
||
|
0 == strncmp('11110', $binip, 5) ||
|
||
|
0 == strncmp('00001', $binip, 5) ||
|
||
|
0 == strncmp('1110', $binip, 4) ||
|
||
|
0 == strncmp('0001', $binip, 4) ||
|
||
|
0 == strncmp('001', $binip, 3) ||
|
||
|
0 == strncmp('011', $binip, 3) ||
|
||
|
0 == strncmp('101', $binip, 3) ||
|
||
|
0 == strncmp('110', $binip, 3)) {
|
||
|
|
||
|
return NET_IPV6_UNASSIGNED;
|
||
|
|
||
|
} else if (0 == strncmp('010', $binip, 3)) {
|
||
|
|
||
|
return NET_IPV6_UNICAST_PROVIDER;
|
||
|
|
||
|
} else if (0 == strncmp('100', $binip, 3)) {
|
||
|
|
||
|
return NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC;
|
||
|
|
||
|
}
|
||
|
|
||
|
return NET_IPV6_UNKNOWN_TYPE;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ Uncompress()
|
||
|
|
||
|
/**
|
||
|
* Uncompresses an IPv6 adress
|
||
|
*
|
||
|
* RFC 2373 allows you to compress zeros in an adress to '::'. This
|
||
|
* function expects an valid IPv6 adress and expands the '::' to
|
||
|
* the required zeros.
|
||
|
*
|
||
|
* Example: FF01::101 -> FF01:0:0:0:0:0:0:101
|
||
|
* ::1 -> 0:0:0:0:0:0:0:1
|
||
|
*
|
||
|
* @param String $ip a valid IPv6-adress (hex format)
|
||
|
* @param Boolean $leadingZeros if true, leading zeros are added to each
|
||
|
* block of the address
|
||
|
* (FF01::101 ->
|
||
|
* FF01:0000:0000:0000:0000:0000:0000:0101)
|
||
|
*
|
||
|
* @return String the uncompressed IPv6-adress (hex format)
|
||
|
* @access public
|
||
|
* @see Compress()
|
||
|
* @static
|
||
|
* @author Pascal Uhlmann
|
||
|
*/
|
||
|
public static function uncompress($ip, $leadingZeros = false)
|
||
|
{
|
||
|
|
||
|
$prefix = Net_IPv6::getPrefixLength($ip);
|
||
|
|
||
|
if (false === $prefix) {
|
||
|
|
||
|
$prefix = '';
|
||
|
|
||
|
} else {
|
||
|
|
||
|
$ip = Net_IPv6::removePrefixLength($ip);
|
||
|
$prefix = '/'.$prefix;
|
||
|
|
||
|
}
|
||
|
|
||
|
$netmask = Net_IPv6::getNetmaskSpec($ip);
|
||
|
$uip = Net_IPv6::removeNetmaskSpec($ip);
|
||
|
|
||
|
$c1 = -1;
|
||
|
$c2 = -1;
|
||
|
|
||
|
if (false !== strpos($uip, '::') ) {
|
||
|
|
||
|
list($ip1, $ip2) = explode('::', $uip);
|
||
|
|
||
|
if ("" == $ip1) {
|
||
|
|
||
|
$c1 = -1;
|
||
|
|
||
|
} else {
|
||
|
|
||
|
$pos = 0;
|
||
|
|
||
|
if (0 < ($pos = substr_count($ip1, ':'))) {
|
||
|
|
||
|
$c1 = $pos;
|
||
|
|
||
|
} else {
|
||
|
|
||
|
$c1 = 0;
|
||
|
|
||
|
}
|
||
|
}
|
||
|
if ("" == $ip2) {
|
||
|
|
||
|
$c2 = -1;
|
||
|
|
||
|
} else {
|
||
|
|
||
|
$pos = 0;
|
||
|
|
||
|
if (0 < ($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:
|
||
|
*/
|
||
|
|
||
|
?>
|