0,0 → 1,753 |
<?php |
|
# |
# IPv6 Functions for PHP |
# |
# (c) 2012-2014 Daniel Marschall, ViaThinkSoft [www.viathinksoft.de] |
# |
# Distribution, usage etc. pp. regulated by the current version of GPL. |
# |
# |
# Version 2014-12-22 |
# |
|
# This library needs gmp! aptitude install php5-gmp |
|
// TODO: oop, exceptions? |
// TODO: variant without gmp ? |
// TODO: IPv6 auflösung 'ffff::192.168.69.1' -> 'ffff:0000:0000:0000:0000:0000:c0a8:4501' geht nicht!!! |
|
define('GMP_ONE', gmp_init('1')); |
|
// Very small self-test: |
/* |
function ipv6_selftest() { |
$iv_b = 'c0ff:ee00::'; |
$iv_m = 32; |
$r = ipv6_cidr2range($iv_b, $iv_m); |
echo "$iv_b/$iv_m => $r[0] - $r[1]\n"; |
|
$rev = ipv6_range2cidr($r[0], $r[1]); |
$rev = implode("\n", $rev); |
echo "$r[0] - $r[1] => $rev ["; |
$ok = $rev == "$iv_b/$iv_m"; |
echo $ok ? 'OK' : 'Mismatch'; |
echo "]\n"; |
echo "In-CIDR-Test: "; |
echo ipv6_in_cidr("$iv_b/$iv_m", "$iv_b/$iv_m") ? 'OK' : 'Fail'; |
echo "\n"; |
} |
ipv6_selftest(); |
*/ |
|
$cache_ipv6_cidr2range = array(); |
function ipv6_cidr2range($baseip_or_cidr, $subnet='') { |
# (C) 2012 ViaThinkSoft |
# Version 1.1 |
# This function converts an CIDR notation <baseip>/<subnet> into an IPv6 address block array($low_ip, $high_ip) |
|
global $cache_ipv6_cidr2range; |
$vvv = $baseip_or_cidr.'|'.$subnet; |
if (isset($cache_ipv6_cidr2range[$vvv])) return $cache_ipv6_cidr2range[$vvv]; |
|
if (strpos($baseip_or_cidr, '/') !== false) { |
$tmp = explode('/', $baseip_or_cidr, 2); |
$baseip_or_cidr = $tmp[0]; |
$subnet = $tmp[1]; |
unset($tmp); |
} |
|
if (($subnet < 0) || ($subnet > 128)) { |
$cache_ipv6_cidr2range[$vvv] = false; |
return false; |
} |
|
$maxint128 = gmp_sub(gmp_pow('2', 128), GMP_ONE); # TODO: GMP_TWO ? |
$netmask = gmp_shiftl($maxint128, 128-$subnet); |
$netmask = gmp_and($netmask, $maxint128); // crop to 128 bit |
$wildcard = gmp_xor($maxint128, $netmask); |
|
$x = gmp_and(ip2long6($baseip_or_cidr), $netmask); |
$nums = $wildcard; |
$low = long2ip6($x); |
$high = long2ip6(gmp_add($x, $nums)); |
|
$out = array($low, $high); |
$cache_ipv6_cidr2range[$vvv] = $out; |
return $out; |
} |
|
$cache_ipv6_range2cidr = array(); |
function ipv6_range2cidr($baseip, $topip) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
# This function converts an IPv6 address block into valid CIDR blocks (There may be multiple blocks!) |
|
global $cache_ipv6_range2cidr; |
$vvv = $baseip.'|'.$topip; |
if (isset($cache_ipv6_range2cidr[$vvv])) return $cache_ipv6_range2cidr[$vvv]; |
|
$out = array(); |
if (ipv6_cmp($baseip, $topip) > 0) { |
$cache_ipv6_range2cidr[$vvv] = false; |
return false; |
} |
while (gmp_cmp(gmp_sub(ip2long6($baseip), GMP_ONE), ip2long6($topip)) != 0) { |
$i = -1; |
do { |
$i++; |
$range = ipv6_cidr2range($baseip, $i); |
$l = $range[0]; |
$t = $range[1]; |
} while ((ipv6_cmp($l, $baseip) != 0) || (ipv6_cmp($t, $topip) > 0)); |
|
$out[] = "$baseip/$i"; |
$baseip = ipv6_add($t, GMP_ONE); |
} |
|
$cache_ipv6_range2cidr[$vvv] = $out; |
return $out; |
} |
|
function ipv6_add($baseip, $num) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
return long2ip6(gmp_add(ip2long6($baseip), $num)); |
} |
|
function ipv6_sub($baseip, $num) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
return long2ip6(gmp_sub(ip2long6($baseip), $num)); |
} |
|
function ipv6_cmp($a, $b) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
return gmp_cmp(ip2long6($a), ip2long6($b)); |
} |
|
$cache_ipv6_in_cidr = array(); |
function ipv6_in_cidr($haystack, $needle) { |
# (C) 2012 ViaThinkSoft |
# Version 1.1 |
|
global $cache_ipv6_in_cidr; |
$vvv = $haystack.'|'.$needle; |
if (isset($cache_ipv6_in_cidr[$vvv])) return $cache_ipv6_in_cidr[$vvv]; |
|
$x = explode('/', $haystack); |
$ha = ipv6_cidr2range($x[0], $x[1]); |
|
$x = explode('/', $needle); |
if (!isset($x[1])) $x[1] = 128; // single IP |
$ne = ipv6_cidr2range($x[0], $x[1]); |
|
$ha_low = ip2long6($ha[0]); |
$ha_hig = ip2long6($ha[1]); |
$ne_low = ip2long6($ne[0]); |
$ne_hig = ip2long6($ne[1]); |
|
# HA: low[ ]high |
# NE: low[ ]high |
|
$out = (gmp_cmp($ne_low, $ha_low) >= 0) && (gmp_cmp($ne_hig, $ha_hig) <= 0); |
$cache_ipv6_in_cidr[$vvv] = $out; |
return $out; |
} |
|
// IMPORTANT! $cmp_ary[x]=y MUST HAVE x<=y ! |
function ipv6_merge_address_blocks($data, $debug = false) { |
# (C) 2012-2013 ViaThinkSoft |
# Version 2.2 |
|
if ($debug !== false) $STARTZEIT = time(); |
|
// 1. Convert IPs to numbers |
|
$cmp_ary = array(); |
foreach ($data as $a => &$b) { |
$a = ip2long6($a); |
$b = ip2long6($b); |
|
$cmp_ary[gmp_strval($a)] = gmp_strval($b); |
unset($a); |
unset($b); |
} |
|
// 2. Sort array |
|
ksort($cmp_ary); |
|
// 3. Merge the blocks in an intelligent way (and remove redundant blocks) |
|
# Merge overlapping blocks |
# [ ] |
# [ ] -> [ ] |
|
# Merge neighbor blocks |
# [ ][ ] -> [ ] |
|
# Remove redundant blocks |
# [ ] -> [ ] |
# [ ] |
|
$merge_count = 0; |
$redundant_deleted_count = 0; |
$round_count = 0; |
do { |
if ($debug !== false) { |
$LAUFZEIT = time() - $STARTZEIT; |
echo $debug."Merging... $round_count rounds; merged $merge_count blocks; deleted $redundant_deleted_count redundant blocks; time: $LAUFZEIT seconds\r"; |
} |
|
$round_count++; |
|
$clean = true; |
|
foreach ($cmp_ary as $a => &$b) { |
foreach ($cmp_ary as $x => &$y) { |
// x in range [a+1..b+1] ? |
if (gmp_cmp(gmp_init($x), gmp_init($a)) <= 0) continue; |
if (gmp_cmp(gmp_init($x), gmp_add(gmp_init($b), GMP_ONE)) > 0) break; |
|
// Merge |
$clean = false; |
if (gmp_cmp(gmp_init($y), gmp_init($b)) > 0) { |
$merge_count++; |
$b = $y; |
unset($cmp_ary[$x]); |
} else { |
$redundant_deleted_count++; |
unset($cmp_ary[$x]); |
} |
} |
} |
} while (!$clean); |
|
if ($debug !== false) { |
$LAUFZEIT = time() - $STARTZEIT; |
echo $debug."Merge completed. $round_count rounds; merged $merge_count blocks; deleted $redundant_deleted_count redundant blocks; time: $LAUFZEIT seconds\n"; |
} |
|
// 4. Convert back to IPs |
|
$out_ary = array(); |
foreach ($cmp_ary as $a => &$b) { |
$a = long2ip6(gmp_init($a)); |
$b = long2ip6(gmp_init($b)); |
$out_ary[$a] = $b; |
} |
|
return $out_ary; |
} |
|
function ipv6_merge_arrays($data_a, $data_b) { |
# (C) 2012 ViaThinkSoft |
# Version 1.2 |
|
$normalized_data_a = array(); |
foreach ($data_a as $from => &$to) { |
$normalized_data_a[ipv6_normalize($from)] = ipv6_normalize($to); |
} |
|
$normalized_data_b = array(); |
foreach ($data_b as $from => &$to) { |
$normalized_data_b[ipv6_normalize($from)] = ipv6_normalize($to); |
} |
|
$data = array(); |
|
foreach ($normalized_data_a as $from => &$to) { |
if (isset($normalized_data_b[$from])) { |
$data[$from] = ipv6_max($to, $normalized_data_b[$from]); |
} else { |
$data[$from] = $to; |
} |
} |
|
foreach ($normalized_data_b as $from => &$to) { |
if (!isset($normalized_data_a[$from])) { |
$data[$from] = $to; |
} |
} |
|
return $data; |
} |
|
function ipv6_valid($ip) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
return ip2long6($ip) !== false; |
} |
|
function ipv6_normalize($ip) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
# Example: |
# 2001:0000:0000::1 -> 2001::1 |
|
$long = ip2long6($ip); |
if ($long == -1 || $long === FALSE) return false; |
return long2ip6($long); |
} |
|
function ipv6_expand($ip) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
# Example: |
# 2001::1 -> 2001:0000:0000:0000:0000:0000:0000:0000 |
|
$long = ip2long6($ip); |
if ($long == -1 || $long === FALSE) return false; |
return long2ip6($long, false); |
} |
|
function ipv6_min($ip_a, $ip_b) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
if (ipv6_cmp($ip_a, $ip_b) == -1) { |
return $ip_a; |
} else { |
return $ip_b; |
} |
} |
|
function ipv6_max($ip_a, $ip_b) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
if (ipv6_cmp($ip_a, $ip_b) == 1) { |
return $ip_a; |
} else { |
return $ip_b; |
} |
} |
|
function ipv6_ipcount($data) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
$cnt = gmp_init('0'); |
|
foreach ($data as $from => &$to) { |
$cnt = gmp_add($cnt, gmp_sub(ip2long6($to), ip2long6($from))); |
} |
|
return gmp_strval($cnt, 10); |
} |
|
function ipv6_read_file($file) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
$data = array(); |
|
$lines = file($file); |
foreach ($lines as &$line) { |
$rng = ipv6_line2range($line); |
$data[$rng[0]] = $rng[1]; |
} |
|
return $data; |
} |
|
function ipv6_line2range($line) { |
# (C) 2012 ViaThinkSoft |
# Version 1.0 |
|
$line = trim($line); |
|
if (strpos($line, '/') !== false) { |
$rng = ipv6_cidr2range($line); |
} else { |
$rng = explode('-', $line); |
$rng[0] = trim($rng[0]); |
$rng[1] = trim($rng[1]); |
$rng[0] = ipv6_normalize($rng[0]); |
if (!isset($rng[1])) $rng[1] = $rng[0]; |
$rng[1] = ipv6_normalize($rng[1]); |
} |
|
return $rng; |
} |
|
# --- |
|
function gmp_shiftl($x, $n) { // shift left |
// http://www.php.net/manual/en/ref.gmp.php#99788 |
return gmp_mul($x, gmp_pow('2', $n)); |
} |
|
function gmp_shiftr($x, $n) { // shift right |
// http://www.php.net/manual/en/ref.gmp.php#99788 |
return gmp_div($x, gmp_pow('2', $n)); |
} |
|
$cache_ip2long6 = array(); |
function ip2long6($ipv6) { |
// Source: |
// http://www.netz-guru.de/2009/11/07/php-ipv6-ip2long-und-long2ip-funktionen/ |
// Slightly modified |
|
global $cache_ip2long6; |
if (isset($cache_ip2long6[$ipv6])) return $cache_ip2long6[$ipv6]; |
|
if ($ipv6 == '') $ipv6 = '::'; |
|
if (filter_var($ipv6, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) { |
$cache_ip2long6[$ipv6] = false; |
return false; |
} |
|
$ip_n = @inet_pton($ipv6); |
if ($ip_n === false) { |
$cache_ip2long6[$ipv6] = false; |
return false; // modified |
} |
$bytes = 16; // 16 bytes x 8 bit/byte = 128bit |
$ipv6long = ''; |
|
while ($bytes > 0) { |
$bin = sprintf('%08b',(ord($ip_n[$bytes-1]))); |
$ipv6long = $bin.$ipv6long; |
$bytes--; |
} |
|
// $out = gmp_strval(gmp_init($ipv6long, 2), 10); |
$out = gmp_init($ipv6long, 2); |
$cache_ip2long6[$ipv6] = $out; |
return $out; |
} |
|
$cache_long2ip6 = array(); |
function long2ip6($ipv6long, $compress=true) { |
// Source: |
// http://www.netz-guru.de/2009/11/07/php-ipv6-ip2long-und-long2ip-funktionen/ |
// Slightly modified |
|
global $cache_long2ip6; |
$vvv = ($compress ? 'T' : 'F').$ipv6long; |
if (isset($cache_long2ip6[$vvv])) return $cache_long2ip6[$vvv]; |
|
// $bin = gmp_strval(gmp_init($ipv6long, 10), 2); |
$bin = gmp_strval($ipv6long, 2); |
if (strlen($bin) < 128) { |
$pad = 128 - strlen($bin); |
for ($i = 1; $i <= $pad; $i++) { |
$bin = '0'.$bin; |
} |
} |
|
$bytes = 0; |
$ipv6 = ''; |
while ($bytes < 8) { // 16 bytes x 8 bit/byte = 128bit |
$bin_part = substr($bin,($bytes*16),16); |
$part = dechex(bindec($bin_part)); |
if (!$compress) { |
$part = str_pad($part, 4, '0', STR_PAD_LEFT); |
} |
$ipv6 .= $part.':'; |
$bytes++; |
} |
|
if ($compress) { |
$out = inet_ntop(inet_pton(substr($ipv6, 0, -1))); |
} else { |
$out = substr($ipv6, 0, strlen($ipv6)-1); |
} |
$cache_long2ip6[$vvv] = $out; |
return $out; |
} |
|
# --- New 16,12,12 |
|
define('IPV6_BITS', 128); |
|
$global_ipv6_distance = array(); |
function ipv6_distance($ipOrCIDR_Searchterm, $ipOrCIDR_Candidate) { |
global $global_ipv6_distance; |
$vvv = $ipOrCIDR_Searchterm.'|'.$ipOrCIDR_Candidate; |
if (isset($global_ipv6_distance[$vvv])) return $global_ipv6_distance[$vvv]; |
|
$ary = ipv6_cidr_split($ipOrCIDR_Searchterm); |
$ip = $ary[0]; |
|
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) { |
$global_ipv6_distance[$vvv] = false; |
return false; |
} |
|
$ary = ipv6_cidr_split($ipOrCIDR_Candidate); |
$ip = $ary[0]; |
$cidr_bits = $ary[1]; |
if ($cidr_bits > IPV6_BITS) { |
$global_ipv6_distance[$vvv] = false; |
return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
} |
if (!is_numeric($cidr_bits)) return false; |
|
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) { |
$global_ipv6_distance[$vvv] = false; |
return false; |
} |
|
$x = ipv6_trackdown($ipOrCIDR_Searchterm); |
|
if (ipv6_in_cidr($x[0], $ip.'/'.$cidr_bits)) { |
$ary = ipv6_cidr_split($x[0]); |
$cidr_bits2 = $ary[1]; |
if ($cidr_bits2 > IPV6_BITS) { |
$global_ipv6_distance[$vvv] = false; |
return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
} |
$out = $cidr_bits2-$cidr_bits; |
$global_ipv6_distance[$vvv] = $out; |
return $out; |
} |
|
$i = 0; |
$max = false; |
foreach ($x as &$y) { |
if (ipv6_in_cidr($ip.'/'.$cidr_bits, $y)) { |
$max = $i; |
} |
$i++; |
} |
|
$global_ipv6_distance[$vvv] = $max; |
return $max; |
} |
|
function ipv6_cidr_split($ipOrCIDR) { |
$ary = explode('/', $ipOrCIDR, 2); |
$cidr_bits = isset($ary[1]) ? $ary[1] : IPV6_BITS; |
if ($cidr_bits > IPV6_BITS) return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
if (!is_numeric($cidr_bits)) return false; |
$ip = $ary[0]; |
return array($ip, $cidr_bits); |
} |
|
function ipv6_equals($ipOrCIDRA, $ipOrCIDRB) { |
return ipv6_normalize_range($ipOrCIDRA) == ipv6_normalize_range($ipOrCIDRB); |
} |
|
function ipv6_cidr_min_ip($ipOrCIDR) { |
$ary = ipv6_cidr_split($ipOrCIDR); |
$ipOrCIDR = $ary[0]; |
$cidr_bits = $ary[1]; |
if ($cidr_bits > IPV6_BITS) return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
if (!is_numeric($cidr_bits)) return false; |
|
$m = ip2bin($ipOrCIDR); |
$m = substr($m, 0, $cidr_bits) . str_repeat('0', IPV6_BITS-$cidr_bits); |
|
return bin2ip($m); |
} |
|
function ipv6_cidr_max_ip($ipOrCIDR) { |
$ary = ipv6_cidr_split($ipOrCIDR); |
$ipOrCIDR = $ary[0]; |
$cidr_bits = $ary[1]; |
if ($cidr_bits > IPV6_BITS) return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
if (!is_numeric($cidr_bits)) return false; |
|
$m = ip2bin($ipOrCIDR); |
$m = substr($m, 0, $cidr_bits) . str_repeat('1', IPV6_BITS-$cidr_bits); |
|
return bin2ip($m); |
} |
|
function ipv6_normalize_range($ipOrCIDR) { |
# 2001:1800::1/21 |
# --> 2001:1800::/21 |
|
# 2001:1af8:4100:a061:0001::1337 |
# --> 2001:1af8:4100:a061:1::1337/128 |
|
$ary = ipv6_cidr_split($ipOrCIDR); |
$ipOrCIDR = $ary[0]; |
$cidr_bits = $ary[1]; |
if ($cidr_bits > IPV6_BITS) return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
if (!is_numeric($cidr_bits)) return false; |
|
$m = ip2bin($ipOrCIDR); |
$m = substr($m, 0, $cidr_bits) . str_repeat('0', IPV6_BITS-$cidr_bits); |
|
return bin2ip($m) . '/' . $cidr_bits; |
} |
|
function ipv6_trackdown($ipOrCIDR) { |
$ary = ipv6_cidr_split($ipOrCIDR); |
$ipOrCIDR = $ary[0]; |
$cidr_bits = $ary[1]; |
if ($cidr_bits > IPV6_BITS) return false; // throw new Exception('CIDR bits > '.IPV6_BITS); |
if (!is_numeric($cidr_bits)) return false; |
|
$out = array(); |
$m = ip2bin($ipOrCIDR); |
for ($i=$cidr_bits; $i>=0; $i--) { |
$m = substr($m, 0, $i) . str_repeat('0', IPV6_BITS-$i); |
$out[] = bin2ip($m) . '/' . $i; |
} |
|
return $out; |
} |
|
function ipv6_sort($ary) { |
$f = array(); |
foreach ($ary as $c) { |
$a = explode('/', $c); |
$ip = $a[0]; |
$bits = isset($a[1]) ? $a[1] : 128; |
|
$d = ip2bin($ip); |
|
# ord('*') must be smaller than ord('0') |
$d = substr($d, 0, $bits).str_repeat('*', 128-$bits); |
|
$f[$d] = $c; |
} |
|
return $f; |
} |
|
function ipv6_make_tree($ary) { |
$ary = ipv6_sort($ary); |
|
if (count($ary) == 0) return array(); |
|
$sub_begin = ''; |
$sub_begin_ip = ''; |
foreach ($ary as $n => $d) { |
$sub_begin = substr($n, 0, strpos($n, '*')); |
$sub_begin_ip = $d; |
unset($ary[$n]); |
break; |
} |
|
$sub = array(); |
$nonsub = array(); |
foreach ($ary as $n => $d) { |
if (substr($n, 0, strlen($sub_begin)) == $sub_begin) { |
$sub[$n] = $d; |
} else { |
$nonsub[$n] = $d; |
} |
} |
|
$out = array(); |
$out[$sub_begin_ip] = ipv6_make_tree($sub); |
|
$a = ipv6_make_tree($nonsub); |
|
$out = array_merge($out, $a); |
|
return $out; |
} |
|
# --- |
|
if (!function_exists('ip2bin')) { |
$cache_ip2bin = array(); |
function ip2bin($ip) { |
# Source: http://php.net/manual/en/function.ip2long.php#104163 |
# modified by VTS |
|
global $cache_ip2bin; |
if (isset($cache_ip2bin[$ip])) return $cache_ip2bin[$ip]; |
|
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false) { |
$out = base_convert(ip2long($ip), 10, 2); |
$cache_ip2bin[$ip] = $out; |
return $out; |
} |
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) { |
$cache_ip2bin[$ip] = false; |
return false; |
} |
if (($ip_n = inet_pton($ip)) === false) { |
$cache_ip2bin[$ip] = false; |
return false; |
} |
$bits = 15; // 16 x 8 bit = 128bit (ipv6) |
$ipbin = ''; # added by vts to avoid warning |
while ($bits >= 0) { |
$bin = sprintf('%08b', (ord($ip_n[$bits]))); |
$ipbin = $bin.$ipbin; |
$bits--; |
} |
|
$cache_ip2bin[$ip] = $ipbin; |
return $ipbin; |
} |
} |
|
if (!function_exists('bin2ip')) { |
$cache_bin2ip = array(); |
function bin2ip($bin) { |
# Source: http://php.net/manual/en/function.ip2long.php#104163 |
# modified by VTS |
|
global $cache_bin2ip; |
if (isset($cache_bin2ip[$bin])) return $cache_bin2ip[$bin]; |
|
if (strlen($bin) <= 32) { // 32bits (ipv4) |
$out = long2ip(base_convert($bin, 2, 10)); |
$cache_bin2ip[$bin] = $out; |
return $out; |
} |
if (strlen($bin) != 128) { |
$cache_bin2ip[$bin] = false; |
return false; |
} |
$pad = 128 - strlen($bin); |
for ($i = 1; $i <= $pad; $i++) { |
$bin = '0'.$bin; |
} |
$bits = 0; |
$ipv6 = ''; # added by vts to avoid warning |
while ($bits <= 7) { |
$bin_part = substr($bin,($bits*16),16); |
$ipv6 .= dechex(bindec($bin_part)) . ':'; |
$bits++; |
} |
|
$out = inet_ntop(inet_pton(substr($ipv6, 0, -1))); |
$cache_bin2ip[$bin] = $out; |
return $out; |
} |
} |
|
# --- TEST |
|
/* |
assert(ipv6_normalize('2001:0000:0000::1') == '2001::1'); |
|
assert(ipv6_distance('2001:1ae0::/27', '2001:1af8::/29') == -2); |
assert(ipv6_distance('2001:1af0::/28', '2001:1af8::/29') == -1); |
assert(ipv6_distance('2001:1af8::/29', '2001:1af8::/29') == 0); |
assert(ipv6_distance('2001:1af8::/30', '2001:1af8::/29') == 1); |
assert(ipv6_distance('2001:1af8::/31', '2001:1af8::/29') == 2); |
|
assert(ipv6_distance('2001:1af8:4100:a061:0001::1336/127', '2001:1af8:4100:a061:0001::1335/127') === false); |
assert(ipv6_distance('2001:1af8:4100:a061:0001::1336/128', '2001:1af8:4100:a061:0001::1337/128') === false); |
assert(ipv6_distance('2001:1af8:4100:a061:0001::1336', '2001:1af8:4100:a061:0001::1337') === false); |
*/ |
|
/* |
$test = '2001:1af8:4100:a061:0001::1337'; |
$x = ipv6_trackdown($test); |
foreach ($x as &$cidr) { |
$min = ipv6_cidr_min_ip($cidr); |
$max = ipv6_cidr_max_ip($cidr); |
echo "$cidr ($min - $max)\n"; |
} |
*/ |