X-Git-Url: http://git.pk910.de/?p=PHP-P10.git;a=blobdiff_plain;f=Uplink%2FNumerics.class.php;h=7cd007a398774ad87bc26e5b45f82ff5e9ac31bc;hp=2af7132f404dfd473298188d8f82aa94eeb3802f;hb=8be3a6c1707de83881176d789145a6c175e35dc2;hpb=7b82a138057d641a0ce2205b611fba2079f7500e diff --git a/Uplink/Numerics.class.php b/Uplink/Numerics.class.php index 2af7132..7cd007a 100644 --- a/Uplink/Numerics.class.php +++ b/Uplink/Numerics.class.php @@ -1,12 +1,10 @@ . * * * ************************************************************************ - * + * * Uplink/Numerics.class.php * * P10 numeric functions * - ************************************************************************ - * accessable functions - * - * static String intToNum(int $int, int $length) - * returns the numeric representing $int - * - * static int numToInt(String $numeric) - * returns the integer value, the numeric represents - * - * static String parseIP(String $numeric) - * parses an IP Address in numeric format - * - * static String numericFromIP(String $ip) - * builds a numeric representing the IP */ class Numerics { @@ -48,11 +31,8 @@ class Numerics { 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','[',']' ); private static $base64charsLength = 64; - + public static function intToNum($int, $length) { - //fix a small "bug": normaly 0 = AAAAA but we need 1 = AAAAA - $int = $int - 1; - $numeric = ""; for($pos = $length-1; $pos >= 0; $pos--) { //current position represents floor($int / ($base64charsLength ^ $pos)) @@ -61,128 +41,25 @@ class Numerics { $base = $base * self::$base64charsLength; } $posValue = floor($int / $base); + $int -= $posValue * $base; //get the char representing $posValue $posChar = self::$base64chars[$posValue]; $numeric .= $posChar; } - return $numeric; } - + public static function numToInt($numeric) { $base = 1; $int = 0; for($pos = strlen($numeric)-1; $pos >= 0; $pos--) { $posValue = array_search($numeric[$pos], self::$base64chars); - $int = ($posValue * $base); + $int += ($posValue * $base); $base = $base * self::$base64charsLength; } - - //fix a small "bug": normaly 0 = AAAAA but we need 1 = AAAAA - $int = $int + 1; - return $int; } - - public static function parseIP($numeric, $shortForm = true) { - if(strlen($numeric) == 6) { //IPv4 - $value = self::numToInt($numeric); - $ip = array(); - $ip[0] = ($value & 0xff000000) >> 24; - $ip[1] = ($value & 0x00ff0000) >> 16; - $ip[2] = ($value & 0x0000ff00) >> 8; - $ip[3] = ($value & 0x000000ff); - return implode(".", $ip); - } else { //IPv6 - $ip = array(); - for($i = 0; $i < strlen($numeric);) { - if($numeric[$i] == "_") { - if($shortForm) { - $ip[] = ""; //:: - } else { - $rightBlocks = (strlen($numeric) - ($i + 1)) / 3; - $skipCount = 8 - count($ip) - $rightBlocks; - for($j = 0; $j < $skipBlocks; $j++) { - $ip[] = "0"; - } - } - $i++; - } else { - $value = self::numToInt($numeric[$i].$numeric[$i+1].$numeric[$i+2]); - $ip[] = dechex($value); - $i += 3; - } - } - return implode(":", $ip); - } - } - - public static function numericFromIP($ip) { - $pattern = array(); - $pattern['ipv6'] = '/^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))(|\/[0-9]{1,3})$/'; - $pattern['ipv4'] = '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}(|\/[0-9]{1,2})$/'; - if(preg_match($pattern['ipv4'], $ip)) { - //thats quite simple here - $ip = explode(".", $ip); - $ipValue = intval($ip[3]); - $ipValue <<= 8; - $ipValue |= intval($ip[2]); - $ipValue <<= 8; - $ipValue |= intval($ip[1]); - $ipValue <<= 8; - $ipValue |= intval($ip[0]); - $ip = self::intToNum($ipValue,6); - } else if(preg_match($pattern['ipv6'], $ip)) { - //thats a little bit complicated :D (we may only have one _) - $ipv6 = array(); - $ip = explode(":",$ip); - $last_zero = false; $zero_sequence = 0; $biggest_zero_sequence = 0; $max_start = -1; - foreach($ip as $i => $v) { - if($v == "") { - $skipBlocks = (8 - count($ip)); - for($j = 0; $j < $skipBlocks; $j++) { - $ipv6[$i+$j] = "_"; - } - $max_start = $i; - $biggest_zero_sequence = $skipBlocks; - } else { - $value = hexdec($v); - if($value == 0) { - $ipv6[$i] = "_"; - if($last_zero) { - $zero_sequence++; - } else { - $last_zero = true; - $zero_sequence = 1; - } - if($zero_sequence > $biggest_zero_sequence) { - $biggest_zero_sequence = $zero_sequence; - $max_start = $i-($zero_sequence-1); - } - } else { - $ipv6[$i] = self::intToNum($value,3); - $last_zero = false; - } - } - } - $ip = ""; - for($i = 0; $i < 8; $i++) { - if($i == $max_start) { //merge the biggest sequence of _'s - $ip .= "_"; - $i += ($biggest_zero_sequence-1); - } elseif($ipv6[$i] == "_") { - $ip .= "AAA"; - } else { - $ip .= $ipv6[$i]; - } - } - return $ip; - } else { - $ip = "AAAAAA"; - } - return $ip; - } - + } ?> \ No newline at end of file