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-rw-r--r--etc/inc/IPv6.inc918
-rw-r--r--usr/local/www/javascript/NetUtils.js114
2 files changed, 1032 insertions, 0 deletions
diff --git a/etc/inc/IPv6.inc b/etc/inc/IPv6.inc
new file mode 100644
index 0000000..45ea2d7
--- /dev/null
+++ b/etc/inc/IPv6.inc
@@ -0,0 +1,918 @@
+<?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 http://www.opensource.org/licenses/bsd-license.php
+ * @version CVS: $Id: IPv6.inc,v 1.2 2008/11/26 03:54:43 sumacob Exp $
+ * @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 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
+ * @copyright 2003-2005 The PHP Group
+ * @license http://www.opensource.org/licenses/bsd-license.php
+ * @version $Release$
+ * @link http://pear.php.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>
+ */
+class Net_IPv6 {
+
+ // {{{ removeNetmaskBits()
+
+ /**
+ * Removes a possible existing netmask specification at an IP addresse.
+ *
+ * @param String $ip the (compressed) IP as Hex representation
+ *
+ * @return String the IP without netmask length
+ * @since 1.1.0
+ * @access public
+ * @static
+ */
+ function removeNetmaskSpec($ip)
+ {
+ $addr = $ip;
+
+ if (false !== strpos($ip, '/')) {
+
+ $elements = explode('/', $ip);
+
+ if (2 == count($elements)) {
+
+ $addr = $elements[0];
+
+ }
+
+ }
+
+ return $addr;
+ }
+
+ /**
+ * Returns a possible existing netmask specification at an IP addresse.
+ *
+ * @param String $ip the (compressed) IP as Hex representation
+ *
+ * @return String the netmask spec
+ * @since 1.1.0
+ * @access public
+ * @static
+ */
+ function getNetmaskSpec($ip)
+ {
+ $spec = '';
+
+ if (false !== strpos($ip, '/')) {
+
+ $elements = explode('/', $ip);
+
+ if (2 == count($elements)) {
+
+ $spec = $elements[1];
+
+ }
+
+ }
+
+ return $spec;
+ }
+
+ // }}}
+ // {{{ getNetmask()
+
+ /**
+ * Calculates the network prefix based on the netmask bits.
+ *
+ * @param String $ip the (compressed) IP in Hex format
+ * @param int $bits if the number of netmask bits is not part of the IP
+ * you must provide the number of bits
+ *
+ * @return String the network prefix
+ * @since 1.1.0
+ * @access public
+ * @static
+ */
+ function getNetmask($ip, $bits = null)
+ {
+ if (null==$bits) {
+
+ $elements = explode('/', $ip);
+
+ if (2 == count($elements)) {
+
+ $addr = $elements[0];
+ $bits = $elements[1];
+
+ } else {
+
+ include_once 'PEAR.inc';
+
+ 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 $ip is in the netmask
+ * @since 1.1.0
+ * @access public
+ * @static
+ */
+ function isInNetmask($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.inc';
+ 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 1883, 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 $ip the IP address in Hex format,
+ * compressed IPs are allowed
+ *
+ * @return int one of the addresse type constants
+ * @access public
+ * @since 1.1.0
+ * @static
+ *
+ * @see NET_IPV6_UNASSIGNED
+ * @see NET_IPV6_RESERVED
+ * @see NET_IPV6_RESERVED_NSAP
+ * @see NET_IPV6_RESERVED_IPX
+ * @see NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC
+ * @see NET_IPV6_UNICAST_PROVIDER
+ * @see NET_IPV6_MULTICAST
+ * @see NET_IPV6_LOCAL_LINK
+ * @see NET_IPV6_LOCAL_SITE
+ * @see NET_IPV6_UNKNOWN_TYPE
+ */
+ function getAddressType($ip)
+ {
+ $ip = Net_IPv6::removeNetmaskSpec($ip);
+ $binip = Net_IPv6::_ip2Bin($ip);
+
+ 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
+ *
+ * @access public
+ * @see Compress()
+ * @static
+ * @param string $ip a valid IPv6-adress (hex format)
+ * @return string the uncompressed IPv6-adress (hex format)
+ */
+ function uncompress($ip)
+ {
+
+ $prefix = Net_IPv6::getPrefixLength($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 ('' != $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
+ *
+ * @access public
+ * @see Uncompress()
+ * @static
+ * @param string $ip a valid IPv6-adress (hex format)
+ * @return string the compressed IPv6-adress (hex format)
+ * @author elfrink at introweb dot nl
+ */
+ function compress($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);
+
+ if (!strstr($ip, '::')) {
+
+ $ipp = explode(':',$ip);
+
+ for ($i = 0; $i < count($ipp); $i++) {
+
+ $ipp[$i] = dechex(hexdec($ipp[$i]));
+
+ }
+
+ $cip = ':' . join(':',$ipp) . ':';
+
+ preg_match_all("/(: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;
+ }
+
+ // }}}
+ // {{{ 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 $ip a valid IPv6-adress (hex format)
+ *
+ * @return array [0] contains the IPv6 part,
+ * [1] the IPv4 part (hex format)
+ * @access public
+ * @static
+ */
+ function SplitV64($ip, $uncompress = true)
+ {
+ $ip = Net_IPv6::removeNetmaskSpec($ip);
+
+ if ($uncompress) {
+
+ $ip = Net_IPv6::Uncompress($ip);
+
+ }
+
+ if (strstr($ip, '.')) {
+
+ $pos = strrpos($ip, ':');
+ $ip{$pos} = '_';
+ $ipPart = explode('_', $ip);
+
+ return $ipPart;
+
+ } else {
+
+ return array($ip, "");
+
+ }
+ }
+
+ // }}}
+ // {{{ checkIPv6()
+
+ /**
+ * Checks an IPv6 adress
+ *
+ * Checks if the given IP is IPv6-compatible
+ *
+ * @access public
+ * @static
+ * @param string $ip a valid IPv6-adress
+ * @return boolean true if $ip is an IPv6 adress
+ */
+ function checkIPv6($ip)
+ {
+ $ip = Net_IPv6::removePrefixLength($ip);
+ $ip = Net_IPv6::removeNetmaskSpec($ip);
+
+ $ipPart = Net_IPv6::SplitV64($ip);
+ $count = 0;
+
+ if (!empty($ipPart[0]))
+ {
+ $ipv6 =explode(':', $ipPart[0]);
+
+ for ($i = 0; $i < count($ipv6); $i++) {
+
+ $dec = hexdec($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;
+
+ }
+
+ }
+
+ // }}}
+ // {{{ getPrefixLength()
+
+ /**
+ * Tests for a prefix length specification in the address
+ * and returns the prefix length, if exists
+ *
+ * @param String $ip a valid ipv6 address
+ *
+ * @return Mixed the prefix as String or false, if no prefix was found
+ * @access public
+ * @static
+ */
+ function getPrefixLength($ip)
+ {
+ if (preg_match("/^([0-9a-fA-F:]{2,39})\/(\d{1,3})*$/",
+ $ip, $matches)) {
+
+ return $matches[2];
+
+ } else {
+
+ return false;
+
+ }
+
+ }
+
+ // }}}
+ // {{{ removePrefixLength()
+
+ /**
+ * Tests for a prefix length specification in the address
+ * and removes the prefix length, if exists
+ *
+ * @param String $ip a valid ipv6 address
+ *
+ * @return String the address without a prefix length
+ * @access public
+ * @static
+ */
+ function removePrefixLength($ip)
+ {
+ $pos = strrpos($ip, '/');
+
+ if (false !== $pos) {
+
+ return substr($ip, 0, $pos);
+
+ }
+
+ return $ip;
+ }
+
+ // }}}
+
+ // {{{ _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 $ip the IPv6 address
+ * @param String $bits the optional count of netmask bits
+ *
+ * @return Array ['start', 'end'] the lowest and highest IPv6 address
+ * @access public
+ * @static
+ * @author Nicholas Williams
+ */
+
+ function parseAddress($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.inc';
+
+ 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 $ip the IP to convert (a:b:c:d:e:f:g:h),
+ * compressed IPs are allowed
+ *
+ * @return String the binary representation
+ * @access private
+ @ @since 1.1.0
+ */
+ function _ip2Bin($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 $ip the IP as binary
+ *
+ * @return String the uncompressed Hex representation
+ * @access private
+ @ @since 1.1.0
+ */
+ function _bin2Ip($bin)
+ {
+ $ip = "";
+
+ if (strlen($bin) < 128) {
+
+ $bin = str_pad($str, 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:
+ */
+
+?>
diff --git a/usr/local/www/javascript/NetUtils.js b/usr/local/www/javascript/NetUtils.js
new file mode 100644
index 0000000..004a71a
--- /dev/null
+++ b/usr/local/www/javascript/NetUtils.js
@@ -0,0 +1,114 @@
+/*
+ NetUtils.js
+ part of pfSense (http://www.pfsense.com)
+ Various helper functions for IPv6 support.
+
+ Copyright (C) 2007 Simon Cornelius P. Umacob <simoncpu@gmail.com>
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+function NetUtils_changeIPVersionMask(field, version) {
+ switch(version){
+ case 'IPv4':
+ NetUtils_clearOptions(document.getElementById(field));
+ NetUtils_loadMaskIPv4(document.getElementById(field), 32);
+
+ break;
+ case 'IPv6':
+ NetUtils_clearOptions(document.getElementById(field));
+ NetUtils_loadMaskIPv6(document.getElementById(field), 64);
+
+ break;
+ case 'IPv4_net':
+ NetUtils_clearOptions(document.getElementById(field));
+ NetUtils_loadMaskIPv4(document.getElementById(field), 32, 1, 31);
+
+ break;
+ case 'IPv6_net':
+ NetUtils_clearOptions(document.getElementById(field));
+ NetUtils_loadMaskIPv6(document.getElementById(field), 64, 1, 63);
+
+ break;
+ }
+}
+
+function NetUtils_clearOptions(obj) {
+ var len = obj.length;
+
+ for (var i = 0; i < len; i++) {
+ obj[0] = null;
+ }
+}
+
+function NetUtils_loadMaskIPv4(obj, sel, min, max) {
+ var min,
+ max,
+ j = 0;
+
+ min = min == undefined ? 1 : min;
+ max = max == undefined ? 32 : max;
+
+ for (var i = max; i >= min; i--) {
+ obj[j] = new Option(i, i);
+ if (sel == i) {
+ obj[j].selected = true;
+ }
+ j++;
+ }
+}
+
+function NetUtils_loadMaskIPv6(obj, sel, min, max) {
+ var min,
+ max,
+ j = 0;
+
+ min = min == undefined ? 1 : min;
+ max = max == undefined ? 64 : max;
+
+ if ((max % 4) != 0) {
+ obj[j++] = new Option(max, max);
+
+ /**
+ * NOTE: This solution is a kludge.
+ * If you have a better way, don't hesitate
+ * to change this. Please send patches. :)
+ */
+ for (var i = 1; i <= 3; i++) {
+ if (((max - i) % 4) == 0) {
+ max = max - i;
+ break;
+ }
+ }
+ }
+
+ for (var i = max; i >= min; i -= 4) {
+ obj[j] = new Option(i, i);
+ if (sel == i) {
+ obj[j].selected = true;
+ }
+ j++;
+ }
+}
+
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