| 0,0 → 1,667 |
|---|
| <?php |
| |
| /* |
| * IPv4 functions for PHP |
| * Copyright 2012-2021 Daniel Marschall, ViaThinkSoft |
| * Version 2021-05-21 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // TODO: oop, exceptions? |
| |
| // Very small self-test: |
| /* |
| function ipv4_selftest() { |
| $iv_b = ipv4_complete('1.2'); |
| $iv_m = 20; |
| $r = ipv4_cidr2range($iv_b, $iv_m); |
| echo "$iv_b/$iv_m => $r[0] - $r[1]\n"; |
| |
| $rev = ipv4_range2cidr($r[0], $r[1]); |
| $rev = implode("\n", $rev); |
| echo "$r[0] - $r[1] => $rev ["; |
| $ok = $rev == "$iv_b/$iv_m"; |
| echo $ok ? 'OK' : 'Mismatch'; |
| echo "]\n"; |
| echo "In-CIDR-Test: "; |
| echo ipv4_in_cidr("$iv_b/$iv_m", "$iv_b/$iv_m") ? 'OK' : 'Fail'; |
| echo "\n"; |
| } |
| ipv4_selftest(); |
| */ |
| |
| function ipv4_cidr2range($baseip_or_cidr, $subnet='') { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.1 |
| # This function converts an CIDR notation <baseip>/<subnet> into an IPv4 address block array($low_ip, $high_ip) |
| |
| if (strpos($baseip_or_cidr, '/') !== false) { |
| $tmp = explode('/', $baseip_or_cidr, 2); |
| $baseip_or_cidr = $tmp[0]; |
| $subnet = $tmp[1]; |
| unset($tmp); |
| } |
| |
| if (($subnet < 0) || ($subnet > 32)) return false; |
| |
| $maxint32 = 0xFFFFFFFF; |
| $netmask = $maxint32 << (32-$subnet); |
| $netmask = $netmask & $maxint32; // crop to 32 bits |
| $wildcard = $maxint32 ^ $netmask; // ~$netmask; |
| |
| $x = ipv4_incomplete_ip2long($baseip_or_cidr) & $netmask; |
| $nums = $wildcard; |
| $low = long2ip($x); |
| $high = long2ip($x + $nums); |
| |
| return array($low, $high); |
| } |
| |
| function ipv4_range2cidr($baseip, $topip, $shortening=false) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| # This function converts an IPv4 address block into valid CIDR blocks (There may be multiple blocks!) |
| |
| $out = array(); |
| if (ipv4_cmp($baseip, $topip) > 0) return false; |
| while (ipv4_incomplete_ip2long($baseip)-1 != ipv4_incomplete_ip2long($topip)) { |
| $i = -1; |
| do { |
| $i++; |
| $range = ipv4_cidr2range($baseip, $i); |
| $l = $range[0]; |
| $t = $range[1]; |
| } while ((ipv4_cmp($l, $baseip) != 0) || (ipv4_cmp($t, $topip) > 0)); |
| |
| # Shortening: Stroke ".0" at the end |
| if ($shortening) $baseip = ipv4_shortening($baseip); |
| |
| $out[] = "$baseip/$i"; |
| $baseip = ipv4_add($t, 1); |
| } |
| return $out; |
| } |
| |
| function ipv4_shortening($ip) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| return preg_replace("|(\\.0{1,3}){0,3}\$|ismU", '', $ip); |
| } |
| |
| function ipv4_add($baseip, $num) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| return long2ip(ipv4_incomplete_ip2long($baseip) + $num); |
| } |
| |
| function ipv4_sub($baseip, $num) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| return long2ip(ipv4_incomplete_ip2long($baseip) - $num); |
| } |
| |
| function ipv4_cmp($a, $b) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| $a = ipv4_incomplete_ip2long($a); |
| $b = ipv4_incomplete_ip2long($b); |
| |
| if ($a == $b) return 0; |
| if ($a < $b) return -1; |
| if ($a > $b) return 1; |
| } |
| |
| function ipv4_in_cidr($haystack, $needle) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.1 |
| |
| $x = explode('/', $haystack); |
| $ha = ipv4_cidr2range($x[0], $x[1]); |
| |
| $x = explode('/', $needle); |
| if (!isset($x[1])) $x[1] = '32'; // single IP |
| $ne = ipv4_cidr2range($x[0], $x[1]); |
| |
| $ha_low = ipv4_incomplete_ip2long($ha[0]); |
| $ha_hig = ipv4_incomplete_ip2long($ha[1]); |
| $ne_low = ipv4_incomplete_ip2long($ne[0]); |
| $ne_hig = ipv4_incomplete_ip2long($ne[1]); |
| |
| # HA: low[ ]high |
| # NE: low[ ]high |
| |
| return ($ne_low >= $ha_low) && ($ne_hig <= $ha_hig); |
| } |
| |
| function ipv4_complete($short_form) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| $short_form = trim($short_form); |
| if ($short_form == '') return '0.0.0.0'; |
| $c = substr_count($short_form, '.'); |
| if ($c > 3) return false; |
| if ($c == 3) return $short_form; |
| $c = substr_count($short_form, '.'); |
| $short_form .= str_repeat('.0', 3-$c); |
| return $short_form; |
| } |
| |
| function ipv4_incomplete_ip2long($ip) { |
| # (C) 2012-2014 ViaThinkSoft |
| # Version 1.2 |
| |
| # return sprintf('%u', ip2long(ipv4_complete($ip))); |
| return sprintf('%u', ip2long(ipv4_normalize($ip))); |
| } |
| |
| // IMPORTANT! $cmp_ary[x]=y MUST HAVE x<=y ! |
| function ipv4_merge_address_blocks($data, $debug = false, $shortening = false) { |
| # (C) 2012-2013 ViaThinkSoft |
| # Version 2.2 |
| |
| if ($debug !== false) $STARTZEIT = time(); |
| |
| // 1. Convert IPs to numbers |
| |
| $cmp_ary = array(); |
| foreach ($data as $a => &$b) { |
| $a = ipv4_incomplete_ip2long($a); |
| $b = ipv4_incomplete_ip2long($b); |
| |
| $cmp_ary[$a] = $b; |
| unset($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 ($x<=$a) continue; |
| if ($x>$b+1) break; |
| |
| // Merge |
| $clean = false; |
| if ($y>$b) { |
| $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) { |
| $a = long2ip($a); |
| $b = long2ip($b); |
| if ($shortening) { |
| $a = ipv4_shortening($a); |
| $b = ipv4_shortening($b); |
| } |
| $out_ary[$a] = $b; |
| } |
| |
| return $out_ary; |
| } |
| |
| function ipv4_merge_arrays($data_a, $data_b) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.2 |
| |
| $normalized_data_a = array(); |
| foreach ($data_a as $from => &$to) { |
| $normalized_data_a[ipv4_normalize($from)] = ipv4_normalize($to); |
| } |
| |
| $normalized_data_b = array(); |
| foreach ($data_b as $from => &$to) { |
| $normalized_data_b[ipv4_normalize($from)] = ipv4_normalize($to); |
| } |
| |
| $data = array(); |
| |
| foreach ($normalized_data_a as $from => &$to) { |
| if (isset($normalized_data_b[$from])) { |
| $data[$from] = ipv4_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 $data; |
| } |
| |
| function ipv4_valid($ip) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| # return ipv4_incomplete_ip2long($ip) !== false; |
| return ip2long($ip) !== false; |
| } |
| |
| function ipv4_normalize($ip) { |
| # (C) 2012-2013 ViaThinkSoft |
| # Version 1.1.1 |
| |
| # Example: |
| # 100.010.001.000 -> 100.10.1.0 |
| |
| $ip = ipv4_complete($ip); |
| if (!$ip) return false; |
| |
| # ip2long buggy: 001.0.0.0 is not accepted |
| ## $cry = explode('.', $ip); |
| ## $cry[0] = preg_replace('@^0+@', '', $cry[0]); if ($cry[0] == '') $cry[0] = '0'; |
| ## $cry[1] = preg_replace('@^0+@', '', $cry[1]); if ($cry[1] == '') $cry[1] = '0'; |
| ## $cry[2] = preg_replace('@^0+@', '', $cry[2]); if ($cry[2] == '') $cry[2] = '0'; |
| ## $cry[3] = preg_replace('@^0+@', '', $cry[3]); if ($cry[3] == '') $cry[3] = '0'; |
| ## $ip = implode('.', $cry); |
| ## return $ip; |
| |
| return preg_replace('@^0{0,2}([0-9]{1,3})\.0{0,2}([0-9]{1,3})\.0{0,2}([0-9]{1,3})\.0{0,2}([0-9]{1,3})$@', '\\1.\\2.\\3.\\4', $ip); |
| } |
| |
| function ipv4_expand($ip) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| # Example: |
| # 100.10.1.0 -> 100.010.001.000 |
| |
| $ip = ipv4_complete($ip); |
| if (!$ip) return false; |
| |
| $cry = explode('.', $ip); |
| $cry[0] = str_pad($cry[0], 3, '0', STR_PAD_LEFT); |
| $cry[1] = str_pad($cry[1], 3, '0', STR_PAD_LEFT); |
| $cry[2] = str_pad($cry[2], 3, '0', STR_PAD_LEFT); |
| $cry[3] = str_pad($cry[3], 3, '0', STR_PAD_LEFT); |
| return implode('.', $cry); |
| } |
| |
| function ipv4_min($ip_a, $ip_b) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| if (ipv4_cmp($ip_a, $ip_b) == -1) { |
| return $ip_a; |
| } else { |
| return $ip_b; |
| } |
| } |
| |
| function ipv4_max($ip_a, $ip_b) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| if (ipv4_cmp($ip_a, $ip_b) == 1) { |
| return $ip_a; |
| } else { |
| return $ip_b; |
| } |
| } |
| |
| function ipv4_ipcount($data) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| $cnt = 0; |
| |
| foreach ($data as $from => &$to) { |
| $cnt += ipv4_incomplete_ip2long($to) - ipv4_incomplete_ip2long($from); |
| } |
| |
| return $cnt; |
| } |
| |
| function ipv4_read_file($file) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| $data = array(); |
| |
| $lines = file($file); |
| foreach ($lines as &$line) { |
| $rng = ipv4_line2range($line); |
| $data[$rng[0]] = $rng[1]; |
| } |
| |
| return $data; |
| } |
| |
| function ipv4_line2range($line) { |
| # (C) 2012 ViaThinkSoft |
| # Version 1.0 |
| |
| $line = trim($line); |
| |
| if (strpos($line, '/') !== false) { |
| $rng = ipv4_cidr2range($line); |
| } else { |
| $rng = explode('-', $line); |
| $rng[0] = trim($rng[0]); |
| $rng[1] = trim($rng[1]); |
| $rng[0] = ipv4_normalize($rng[0]); |
| if (!isset($rng[1])) $rng[1] = $rng[0]; |
| $rng[1] = ipv4_normalize($rng[1]); |
| } |
| |
| return $rng; |
| } |
| |
| # --- New 16,12,12 |
| |
| define('IPV4_BITS', 32); |
| |
| function ipv4_distance($ipOrCIDR_Searchterm, $ipOrCIDR_Candidate) { |
| $ary = ipv4_cidr_split($ipOrCIDR_Searchterm); |
| $ip = $ary[0]; |
| |
| if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === false) { |
| return false; |
| } |
| |
| $ary = ipv4_cidr_split($ipOrCIDR_Candidate); |
| $ip = $ary[0]; |
| $cidr_bits = $ary[1]; |
| if ($cidr_bits > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| if (!is_numeric($cidr_bits)) return false; |
| |
| if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === false) { |
| return false; |
| } |
| |
| $x = ipv4_trackdown($ipOrCIDR_Searchterm); |
| |
| if (ipv4_in_cidr($x[0], $ip.'/'.$cidr_bits)) { |
| $ary = ipv4_cidr_split($x[0]); |
| $cidr_bits2 = $ary[1]; |
| if ($cidr_bits2 > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| return $cidr_bits2-$cidr_bits; |
| } |
| |
| $i = 0; |
| $max = false; |
| foreach ($x as &$y) { |
| if (ipv4_in_cidr($ip.'/'.$cidr_bits, $y)) { |
| $max = $i; |
| } |
| $i++; |
| } |
| |
| return $max; |
| } |
| |
| function ipv4_cidr_split($ipOrCIDR) { |
| $ary = explode('/', $ipOrCIDR, 2); |
| $cidr_bits = isset($ary[1]) ? $ary[1] : IPV4_BITS; |
| if ($cidr_bits > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| if (!is_numeric($cidr_bits)) return false; |
| $ip = $ary[0]; |
| return array($ip, $cidr_bits); |
| } |
| |
| function ipv4_equals($ipOrCIDRA, $ipOrCIDRB) { |
| return ipv4_normalize_range($ipOrCIDRA) == ipv4_normalize_range($ipOrCIDRB); |
| } |
| |
| function ipv4_cidr_min_ip($ipOrCIDR) { |
| $ary = ipv4_cidr_split($ipOrCIDR); |
| $ipOrCIDR = $ary[0]; |
| $cidr_bits = $ary[1]; |
| if ($cidr_bits > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| if (!is_numeric($cidr_bits)) return false; |
| |
| $m = ip2bin($ipOrCIDR); |
| $m = substr($m, 0, $cidr_bits) . str_repeat('0', IPV4_BITS-$cidr_bits); |
| |
| return bin2ip($m); |
| } |
| |
| function ipv4_cidr_max_ip($ipOrCIDR) { |
| $ary = ipv4_cidr_split($ipOrCIDR); |
| $ipOrCIDR = $ary[0]; |
| $cidr_bits = $ary[1]; |
| if ($cidr_bits > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| if (!is_numeric($cidr_bits)) return false; |
| |
| $m = ip2bin($ipOrCIDR); |
| $m = substr($m, 0, $cidr_bits) . str_repeat('1', IPV4_BITS-$cidr_bits); |
| |
| return bin2ip($m); |
| } |
| |
| function ipv4_normalize_range($ipOrCIDR) { |
| $ary = ipv4_cidr_split($ipOrCIDR); |
| $ipOrCIDR = $ary[0]; |
| $cidr_bits = $ary[1]; |
| if ($cidr_bits > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| if (!is_numeric($cidr_bits)) return false; |
| |
| $m = ip2bin($ipOrCIDR); |
| $m = substr($m, 0, $cidr_bits) . str_repeat('0', IPV4_BITS-$cidr_bits); |
| |
| return bin2ip($m) . '/' . $cidr_bits; |
| } |
| |
| function ipv4_trackdown($ipOrCIDR) { |
| $ary = ipv4_cidr_split($ipOrCIDR); |
| $ipOrCIDR = $ary[0]; |
| $cidr_bits = $ary[1]; |
| if ($cidr_bits > IPV4_BITS) return false; // throw new Exception('CIDR bits > '.IPV4_BITS); |
| if (!is_numeric($cidr_bits)) return false; |
| |
| $out = array(); |
| $m = ip2bin($ipOrCIDR); |
| |
| for ($i=$cidr_bits; $i>=0; $i--) { |
| $m = substr($m, 0, $i) . str_repeat('0', IPV4_BITS-$i); |
| $out[] = bin2ip($m) . '/' . $i; |
| } |
| |
| return $out; |
| } |
| |
| # --- |
| |
| if (!function_exists('ip2bin')) { |
| function ip2bin($ip) { |
| # Source: http://php.net/manual/en/function.ip2long.php#104163 |
| # modified by VTS |
| |
| if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false) { |
| $iplong = ip2long($ip); |
| assert($iplong !== false); |
| return base_convert((string)$iplong, 10, 2); |
| } |
| if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) { |
| return false; |
| } |
| if (($ip_n = inet_pton($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--; |
| } |
| return $ipbin; |
| } |
| } |
| |
| if (!function_exists('bin2ip')) { |
| function bin2ip($bin) { |
| # Source: http://php.net/manual/en/function.ip2long.php#104163 |
| # modified by VTS |
| |
| if (strlen($bin) <= 32) { // 32bits (ipv4) |
| $iplong = base_convert($bin, 2, 10); |
| return long2ip(intval($iplong)); |
| } |
| if (strlen($bin) != 128) { |
| 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)) . ':'; |
| $bits++; |
| } |
| return inet_ntop(inet_pton(substr($ipv6, 0, -1))); |
| } |
| } |
| |
| # --- TEST |
| |
| /* |
| assert(ipv4_normalize('100.010.001.000') == '100.10.1.0'); |
| assert(ipv4_normalize('100.010.01.000') == '100.10.1.0'); |
| assert(ipv4_normalize('100.10.001.000') == '100.10.1.0'); |
| assert(ipv4_normalize('1.010.001.000') == '1.10.1.0'); |
| assert(ipv4_normalize('1.10.001.000') == '1.10.1.0'); |
| |
| assert(ipv4_distance('192.168.0.0/16', '192.168.64.0/18') == -2); |
| assert(ipv4_distance('192.168.0.0/17', '192.168.64.0/18') == -1); |
| assert(ipv4_distance('192.168.64.0/18', '192.168.64.0/18') == 0); |
| assert(ipv4_distance('192.168.64.0/19', '192.168.64.0/18') == 1); |
| assert(ipv4_distance('192.168.64.0/20', '192.168.64.0/18') == 2); |
| |
| assert(ipv4_distance('192.168.69.202/31', '192.168.69.200/31') === false); |
| assert(ipv4_distance('192.168.69.201/32', '192.168.69.200/32') === false); |
| assert(ipv4_distance('192.168.69.201', '192.168.69.200') === false); |
| */ |
| |
| /* |
| $test = '192.168.69.123'; |
| $x = ipv4_trackdown($test); |
| foreach ($x as &$cidr) { |
| $min = ipv4_cidr_min_ip($cidr); |
| $max = ipv4_cidr_max_ip($cidr); |
| echo "$cidr ($min - $max)\n"; |
| } |
| */ |
| |
| |
| |
| |
| function ipv4_sort($ary) { |
| $f = array(); |
| foreach ($ary as $c) { |
| $a = explode('/', $c); |
| $ip = $a[0]; |
| $bits = isset($a[1]) ? $a[1] : 32; |
| |
| $d = ip2bin($ip); |
| |
| # ord('*') must be smaller than ord('0') |
| $d = substr($d, 0, $bits).str_repeat('*', 32-$bits); |
| |
| $f[$d] = $c; |
| } |
| |
| return $f; |
| } |
| |
| function ipv4_make_tree($ary) { |
| $ary = ipv4_sort($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] = ipv4_make_tree($sub); |
| |
| $a = ipv4_make_tree($nonsub); |
| |
| $out = array_merge($out, $a); |
| |
| return $out; |
| } |
| |