Uplink/IPAddr.class.php

   1 <?php
   2 /********************************* PHP-P10 ******************************
   3  *    P10 uplink class by pk910   (c)2011 pk910                         *
   4  ************************************************************************
   5  *                          Version 2 (OOP)                             *
   6  *                                                                      *
   7  * PHP-P10 is free software; you can redistribute it and/or modify      *
   8  * it under the terms of the GNU General Public License as published by *
   9  * the Free Software Foundation; either version 2 of the License, or    *
  10  * (at your option) any later version.                                  *
  11  *                                                                      *
  12  * This program is distributed in the hope that it will be useful,      *
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  15  * GNU General Public License for more details.                         *
  16  *                                                                      *
  17  * You should have received a copy of the GNU General Public License    *
  18  * along with PHP-P10; if not, write to the Free Software Foundation,   *
  19  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.       *
  20  *                                                                      *
  21  ************************************************************************
  22  *
  23  *  Uplink/IpAddr.class.php
  24  *
  25  * This class represents an IPv4 or IPv6 address.
  26  *
  27  */
  28
  29 class IPAddr {
  30         private static $pattern_IPv6 = '/^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))(|\/[0-9]{1,3})$/';
  31         private static $pattern_IPv4 = '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}(|\/[0-9]{1,2})$/';
  32         private $ip6 = array();
  33         private $addr_is_ipv6 = false;
  34
  35         public function __construct($initial_value) {
  36                 for($i = 0; $i < 8; $i++) {
  37                         $ip6[$i] = 0;
  38                 }
  39                 if($initial_value == null) {
  40                         //nothing
  41                 } elseif(preg_match(self::$pattern_IPv6, $initial_value)) {
  42                         $this->parseIPv6($initial_value);
  43                 } elseif(preg_match(self::$pattern_IPv4, $initial_value)) {
  44                         $this->parseIPv4($initial_value);
  45                 } else {
  46                         $this->parseNumeric($initial_value);
  47                 }
  48         }
  49
  50         public function parseNumeric($numeric) {
  51                 if(strlen($numeric) == 6) { //IPv4
  52                         $value = Numerics::numToInt($numeric);
  53                         $this->ip6[6] = ($value & 0xffff0000) >> 16;
  54                         $this->ip6[7] = ($value & 0x0000ffff);
  55                         $this->addr_is_ipv6 = false;
  56                 } else { //IPv6
  57                         $j = 0;
  58                         for($i = 0; $i < strlen($numeric);) {
  59                                 if($numeric[$i] == "_") {
  60                                         $rightBlocks = (strlen($numeric) - $i - 1) / 3;
  61                                         $skipBlocks = 8 - $j - $rightBlocks;
  62                                         $j += $skipBlocks;
  63                                 } else {
  64                                         $value = Numerics::numToInt($numeric[$i].$numeric[$i+1].$numeric[$i+2]);
  65                                         $this->ip6[$j++] = dechex($value);
  66                                         $i += 3;
  67                                 }
  68                         }
  69                 }
  70         }
  71
  72         public function parseIPv6($ipv6) {
  73                 if(substr($ipv6,0,2) == "::") $ipv6 = substr($ipv6, 1);
  74                 if(substr($ipv6,-2) == "::") $ipv6 = substr($ipv6, 0, -1);
  75                 $ipv6blocks = explode(":", $ipv6);
  76                 $j = 0;
  77                 foreach($ipv6blocks as $i => $block) {
  78                         if($block == "") {
  79                                 $skipBlocks = 8 - count($ipv6blocks);
  80                                 $j += $skipBlocks + 1;
  81                         } else {
  82                                 $this->ip6[$j++] = hexdec($block);
  83                         }
  84                 }
  85         }
  86
  87         public function parseIPv4($ipv4) {
  88                 $ipv4blocks = explode(".",$ipv4);
  89                 $this->ip6[6] = intval($ipv4blocks[0]) << 8;
  90                 $this->ip6[6] |= intval($ipv4blocks[1]);
  91                 $this->ip6[7] = intval($ipv4blocks[2]) << 8;
  92                 $this->ip6[7] |= intval($ipv4blocks[3]);
  93         }
  94
  95         public function isIPv6() {
  96                 return $this->addr_is_ipv6;
  97         }
  98
  99         public function getAddress() {
 100                 if($this->isIPv6()) {
 101                         $max_start = 0;
 102                         $max_zeros = 0;
 103                         $curr_zeros = 0;
 104                         for ($i = 0; $i < 8; $i++) {
 105                                 if ($this->ip6[$i] == 0)
 106                                         $curr_zeros++;
 107                                 else if ($curr_zeros > $max_zeros) {
 108                                         $max_start = $i - $curr_zeros;
 109                                         $max_zeros = $curr_zeros;
 110                                         $curr_zeros = 0;
 111                                 }
 112                         }
 113                         if ($curr_zeros > $max_zeros) {
 114                                 $max_start = $i - $curr_zeros;
 115                                 $max_zeros = $curr_zeros;
 116                         }
 117                         $ipv6 = "";
 118                         for($i = 0; $i < 8; $i++) {
 119                                 if($max_zeros > 1 && $i == $max_start) {
 120                                         $ipv6 .= "::";
 121                                         $i += $max_zeros - 1;
 122                                 } else {
 123                                         if($ipv6 != "") $ipv6 .= ":";
 124                                         $ipv6 .= dechex($this->ip6[$i]);
 125                                 }
 126                         }
 127                         return $ipv6;
 128                 } else {
 129                         $ipv4 = array();
 130                         $ipv4[0] = ($this->ip6[6] >> 8) & 0xff;
 131                         $ipv4[1] = ($this->ip6[6]) & 0xff;
 132                         $ipv4[2] = ($this->ip6[7] >> 8) & 0xff;
 133                         $ipv4[3] = ($this->ip6[7]) & 0xff;
 134                         return implode(".", $ipv4);
 135                 }
 136         }
 137
 138         public function getNumeric() {
 139                 if($this->isIPv6()) {
 140                         $max_start = 0;
 141                         $max_zeros = 0;
 142                         $curr_zeros = 0;
 143                         for ($i = 0; $i < 8; $i++) {
 144                                 if ($this->ip6[$i] == 0)
 145                                         $curr_zeros++;
 146                                 else if ($curr_zeros > $max_zeros) {
 147                                         $max_start = $i - $curr_zeros;
 148                                         $max_zeros = $curr_zeros;
 149                                         $curr_zeros = 0;
 150                                 }
 151                         }
 152                         if ($curr_zeros > $max_zeros) {
 153                                 $max_start = $i - $curr_zeros;
 154                                 $max_zeros = $curr_zeros;
 155                         }
 156                         $ipv6 = "";
 157                         for($i = 0; $i < 8; $i++) {
 158                                 if($max_zeros > 0 && $i == $max_start) {
 159                                         $ipv6 .= "_";
 160                                         $i += $max_zeros - 1;
 161                                 } else {
 162                                         $ipv6 .= Numerics::intToNum($this->ip6[$i],3);
 163                                 }
 164                         }
 165                         return $ipv6;
 166                 } else {
 167                         $ipv4 = array();
 168                         $ipv4[0] = Numerics::intToNum($this->ip6[6], 3);
 169                         $ipv4[1] = Numerics::intToNum($this->ip6[7], 3);
 170                         return $ipv4[0].$ipv4[1];
 171                 }
 172         }
 173
 174 }
 175
 176 ?>