From 92984c1bffca02817f822840d4fa77288c823b26 Mon Sep 17 00:00:00 2001 From: pk910 Date: Thu, 13 Jun 2013 05:50:12 +0200 Subject: [PATCH] added IPAddr.class.php --- PHP/IPAddr.class.php | 165 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 PHP/IPAddr.class.php diff --git a/PHP/IPAddr.class.php b/PHP/IPAddr.class.php new file mode 100644 index 0000000..13018e6 --- /dev/null +++ b/PHP/IPAddr.class.php @@ -0,0 +1,165 @@ +. + */ + +class IPAddr { + private static $pattern_IPv6 = '/^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))(|\/[0-9]{1,3})$/'; + private static $pattern_IPv4 = '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}(|\/[0-9]{1,2})$/'; + private $ip6 = array(); + private $addr_is_ipv6 = false; + + public function __construct($parse_ip) { + if($parse_ip == null) { + //nothing + } elseif(preg_match(self::$pattern_IPv6, $parse_ip)) { + $this->parseIPv6($parse_ip); + } elseif(preg_match(self::$pattern_IPv4, $parse_ip)) { + $this->parseIPv4($parse_ip); + } + } + + public function parseIPv6($ipv6) { + if(substr($ipv6,0,2) == "::") $ipv6 = substr($ipv6, 1); + if(substr($ipv6,-2) == "::") $ipv6 = substr($ipv6, 0, -1); + $ipv6blocks = explode(":", $ipv6); + $j = 0; + foreach($ipv6blocks as $i => $block) { + if($block == "") { + $skipBlocks = 8 - count($ipv6blocks); + $j += $skipBlocks + 1; + } else if(strpos($block, '.')) { //ipv4 mapped + $this->parseIPv4($block); + return; + } else { + $this->ip6[$j++] = hexdec($block); + } + } + $this->addr_is_ipv6 = true; + } + + public function parseIPv4($ipv4) { + $ipv4blocks = explode(".",$ipv4); + $this->ip6[6] = intval($ipv4blocks[0]) << 8; + $this->ip6[6] |= intval($ipv4blocks[1]); + $this->ip6[7] = intval($ipv4blocks[2]) << 8; + $this->ip6[7] |= intval($ipv4blocks[3]); + $this->addr_is_ipv6 = false; + } + + public function isIPv6() { + return $this->addr_is_ipv6; + } + + public function isLocalAddress() { + /* checks if address is out of: + * 127.0.0.1/32 + * 10.0.0.0/8 + * 192.168.0.0/16 + * 172.16.0.0/12 + * ::1/128 + * fc00::/7 + */ + if($this->addr_is_ipv6) { + if( + (($this->ip6[0] & 0xFE00) == 0xFC00) || /* fc00::/7 */ + ($this->ip6[0] == 0 && $this->ip6[1] == 0 && $this->ip6[2] == 0 && $this->ip6[3] == 0 && + $this->ip6[4] == 0 && $this->ip6[5] == 0 && $this->ip6[6] == 0 && $this->ip6[7] == 1) + ) + return true; + } else { + if( + (($this->ip6[6] & 0xFFFF) == 0x7F00 && ($this->ip6[7] & 0xFFFF) == 0x0001) || /* 127.0.0.1/32 */ + (($this->ip6[6] & 0xFF00) == 0x0A00) || /* 10.0.0.0/8 */ + (($this->ip6[6] & 0xFFF0) == 0xAC10) || /* 172.16.0.0/12 */ + (($this->ip6[6] & 0xFFFF) == 0xC0A8) /* 192.168.0.0/16 */ + ) + return true; + } + return false; + } + + public function getAddress($options = array()) { + $shorten_ipv6 = (isset($options['shorten_ipv6']) ? $options['shorten_ipv6'] : true); + $ipv4_mapped = (isset($options['ipv4_mapped']) ? $options['ipv4_mapped'] : true); + if($this->isIPv6()) { + $max_start = 0; + $max_zeros = 0; + $curr_zeros = 0; + if($shorten_ipv6) { + for ($i = 0; $i < 8; $i++) { + if ($this->ip6[$i] == 0) + $curr_zeros++; + else if ($curr_zeros > $max_zeros) { + $max_start = $i - $curr_zeros; + $max_zeros = $curr_zeros; + $curr_zeros = 0; + } + } + if ($curr_zeros > $max_zeros) { + $max_start = $i - $curr_zeros; + $max_zeros = $curr_zeros; + } + } + $ipv6 = ""; + for($i = 0; $i < 8; $i++) { + if($max_zeros > 1 && $i == $max_start) { + $ipv6 .= "::"; + $i += $max_zeros - 1; + } else { + if($ipv6 != "") $ipv6 .= ":"; + $hex = dechex($this->ip6[$i]); + if(!$shorten_ipv6) { + while(strlen($hex) < 4) + $hex = '0'.$hex; + } + $ipv6 .= $hex; + } + } + return $ipv6; + } else { + $ipv4 = array(); + $ipv4[0] = ($this->ip6[6] >> 8) & 0xff; + $ipv4[1] = ($this->ip6[6]) & 0xff; + $ipv4[2] = ($this->ip6[7] >> 8) & 0xff; + $ipv4[3] = ($this->ip6[7]) & 0xff; + $ipv4 = implode(".", $ipv4); + if($ipv4_mapped) + $ipv4 = '::ffff:'.$ipv4; + return $ipv4; + } + } + + public function ipMatches($ip) { + if(!is_a($ip, __CLASS__)) { + $class = __CLASS__; + $ip = new $class($ip); + } + if(!$ip) + return false; + if(!($this->addr_is_ipv6 xor $ip->addr_is_ipv6)) + return false; + $i = ($this->addr_is_ipv6 ? 0 : 6); + for(;$i < 8; $i++) { + if($this->ip6[$i] != $ip->ip6[$i]) + return false; + } + return true; + } + +} + +?> \ No newline at end of file -- 2.20.1