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functions.php
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functions.php
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<?php
/**
* Convert an IP address from presentation to decimal(39,0) format suitable for storage in MySQL
*
* @param string $ip_address An IP address in IPv4, IPv6 or decimal notation
* @return string The IP address in decimal notation
*/
function ip2dec($ip_address)
{
if (is_null($ip_address) === true) {
return null;
}
// IPv4 address
if (strpos($ip_address, ':') === false && strpos($ip_address, '.') !== false) {
$ip_address = '::' . $ip_address;
}
// IPv6 address
if (strpos($ip_address, ':') !== false) {
$network = inet_pton($ip_address);
$parts = unpack('N*', $network);
foreach ($parts as &$part) {
if ($part < 0) {
$part = bcadd((string) $part, '4294967296');
}
if (!is_string($part)) {
$part = (string) $part;
}
}
$decimal = $parts[4];
$decimal = bcadd($decimal, bcmul($parts[3], '4294967296'));
$decimal = bcadd($decimal, bcmul($parts[2], '18446744073709551616'));
$decimal = bcadd($decimal, bcmul($parts[1], '79228162514264337593543950336'));
return $decimal;
}
// Decimal address
return $ip_address;
}
/**
* Convert an prefix to a decimal range
*
* @param string $prefix A Prefix
* @return Array with to and from
*/
function getPrefixRange($prefix)
{
$prefixParts = explode('/', $prefix);
if (getInputType($prefixParts[0]) === 4) {
$startIpDec = ip2dec($prefixParts[0]) - 1;
$endIpDec = $startIpDec + IPv4cidrIpCount()[$prefixParts[1]] + 1;
} else {
$startIpDec = number_format(ip2dec($prefixParts[0]) - 1, 0 , '', '');
$endIpDec = $startIpDec + IPv6cidrIpCount()[$prefixParts[1]] + 1;
$endIpDec = number_format($endIpDec, 0 , '', '');
}
return [
'to' => $endIpDec,
'from' => $startIpDec
];
}
function getInputType($input)
{
$input = explode('/', $input, 2)[0];
if (!filter_var($input, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) {
return 6;
} elseif (!filter_var($input, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === false) {
return 4;
}
return "asn";
}
function IPv4cidrIpCount($reverse = false)
{
// 'cidr' => 'IP count'
$array = [
'0' => '4294967296',
'1' => '2147483648',
'2' => '1073741824',
'3' => '536870912',
'4' => '268435456',
'5' => '134217728',
'6' => '67108864',
'7' => '33554432',
'8' => '16777216',
'9' => '8388608',
'10' => '4194304',
'11' => '2097152',
'12' => '1048576',
'13' => '524288',
'14' => '262144',
'15' => '131072',
'16' => '65536',
'17' => '32768',
'18' => '16384',
'19' => '8192',
'20' => '4096',
'21' => '2048',
'22' => '1024',
'23' => '512',
'24' => '256',
'25' => '128',
'26' => '64',
'27' => '32',
'28' => '16',
'29' => '8',
'30' => '4',
'31' => '2',
'32' => '1',
];
if ($reverse === true) {
return array_flip($array);
}
return $array;
}
function IPv6cidrIpCount($reverse = false)
{
// 'cidr' => 'IP count'
$array = [
'128' => '1',
'127' => '2',
'126' => '4',
'125' => '8',
'124' => '16',
'123' => '32',
'122' => '64',
'121' => '128',
'120' => '256',
'119' => '512',
'118' => '1024',
'117' => '2048',
'116' => '4096',
'115' => '8192',
'114' => '16384',
'113' => '32768',
'112' => '65536',
'111' => '131072',
'110' => '262144',
'109' => '524288',
'108' => '1048576',
'107' => '2097152',
'106' => '4194304',
'105' => '8388608',
'104' => '16777216',
'103' => '33554432',
'102' => '67108864',
'101' => '134217728',
'100' => '268435456',
'99' => '536870912',
'98' => '1073741824',
'97' => '2147483648',
'96' => '4294967296',
'95' => '8589934592',
'94' => '17179869184',
'93' => '34359738368',
'92' => '68719476736',
'91' => '137438953472',
'90' => '274877906944',
'89' => '549755813888',
'88' => '1099511627776',
'87' => '2199023255552',
'86' => '4398046511104',
'85' => '8796093022208',
'84' => '17592186044416',
'83' => '35184372088832',
'82' => '70368744177664',
'81' => '140737488355328',
'80' => '281474976710656',
'79' => '562949953421312',
'78' => '1125899906842624',
'77' => '2251799813685248',
'76' => '4503599627370496',
'75' => '9007199254740992',
'74' => '18014398509481985',
'73' => '36028797018963968',
'72' => '72057594037927936',
'71' => '144115188075855872',
'70' => '288230376151711744',
'69' => '576460752303423488',
'68' => '1152921504606846976',
'67' => '2305843009213693952',
'66' => '4611686018427387904',
'65' => '9223372036854775808',
'64' => '18446744073709551616',
'63' => '36893488147419103232',
'62' => '73786976294838206464',
'61' => '147573952589676412928',
'60' => '295147905179352825856',
'59' => '590295810358705651712',
'58' => '1180591620717411303424',
'57' => '2361183241434822606848',
'56' => '4722366482869645213696',
'55' => '9444732965739290427392',
'54' => '18889465931478580854784',
'53' => '37778931862957161709568',
'52' => '75557863725914323419136',
'51' => '151115727451828646838272',
'50' => '302231454903657293676544',
'49' => '604462909807314587353088',
'48' => '1208925819614629174706176',
'47' => '2417851639229258349412352',
'46' => '4835703278458516698824704',
'45' => '9671406556917033397649408',
'44' => '19342813113834066795298816',
'43' => '38685626227668133590597632',
'42' => '77371252455336267181195264',
'41' => '154742504910672534362390528',
'40' => '309485009821345068724781056',
'39' => '618970019642690137449562112',
'38' => '1237940039285380274899124224',
'37' => '2475880078570760549798248448',
'36' => '4951760157141521099596496896',
'35' => '9903520314283042199192993792',
'34' => '19807040628566084398385987584',
'33' => '39614081257132168796771975168',
'32' => '79228162514264337593543950336',
'31' => '158456325028528675187087900672',
'30' => '316912650057057350374175801344',
'29' => '633825300114114700748351602688',
'28' => '1267650600228229401496703205376',
'27' => '2535301200456458802993406410752',
'26' => '5070602400912917605986812821504',
'25' => '10141204801825835211973625643008',
'24' => '20282409603651670423947251286016',
'23' => '40564819207303340847894502572032',
'22' => '81129638414606681695789005144064',
'21' => '162259276829213363391578010288128',
'20' => '324518553658426726783156020576256',
'19' => '649037107316853453566312041152512',
'18' => '1298074214633706907132624082305024',
'17' => '2596148429267413814265248164610048',
'16' => '5192296858534827628530496329220096',
'15' => '10384593717069655257060992658440192',
'14' => '20769187434139310514121985316880384',
'13' => '41538374868278621028243970633760768',
'12' => '83076749736557242056487941267521536',
'11' => '166153499473114484112975882535043072',
'10' => '332306998946228968225951765070086144',
'9' => '664613997892457936451903530140172288',
'8' => '1329227995784915872903807060280344576',
];
if ($reverse === true) {
return array_flip($array);
}
return $array;
}