protected static function _convertip_full($ip, $ipdatafile)
{
if ( !$fd = @fopen($ipdatafile, 'rb') )
{
return 'Invalid IP data file';
}
$ip = explode('.', $ip);
$ipNum = $ip[0] * 16777216 + $ip[1] * 65536 + $ip[2] * 256 + $ip[3];
if ( !($DataBegin = fread($fd, 4)) || !($DataEnd = fread($fd, 4)) ) return;
@$ipbegin = implode('', unpack('L', $DataBegin));
if ( $ipbegin < 0 ) $ipbegin += pow(2, 32);
@$ipend = implode('', unpack('L', $DataEnd));
if ( $ipend < 0 ) $ipend += pow(2, 32);
$ipAllNum = ($ipend - $ipbegin) / 7 + 1;
$BeginNum = $ip2num = $ip1num = 0;
$ipAddr1 = $ipAddr2 = '';
$EndNum = $ipAllNum;
while ( $ip1num > $ipNum || $ip2num < $ipNum )
{
$Middle = intval(($EndNum + $BeginNum) / 2);
fseek($fd, $ipbegin + 7 * $Middle);
$ipData1 = fread($fd, 4);
if (strlen($ipData1) < 4)
{
fclose($fd);
return 'System Error';
}
$ip1num = implode('', unpack('L', $ipData1));
if ( $ip1num < 0 ) $ip1num += pow(2, 32);
if ( $ip1num > $ipNum )
{
$EndNum = $Middle;
continue;
}
$DataSeek = fread($fd, 3);
if ( strlen($DataSeek) < 3 )
{
fclose($fd);
return 'System Error';
}
$DataSeek = implode('', unpack('L', $DataSeek . chr(0)));
fseek($fd, $DataSeek);
$ipData2 = fread($fd, 4);
if ( strlen($ipData2) < 4 )
{
fclose($fd);
return 'System Error';
}
$ip2num = implode('', unpack('L', $ipData2));
if ( $ip2num < 0 ) $ip2num += pow(2, 32);
if ( $ip2num < $ipNum )
{
if ( $Middle == $BeginNum )
{
fclose($fd);
return 'Unknown';
}
$BeginNum = $Middle;
}
}
$ipFlag = fread($fd, 1);
if ( $ipFlag == chr(1) )
{
$ipSeek = fread($fd, 3);
if ( strlen($ipSeek) < 3 )
{
fclose($fd);
return 'System Error';
}
$ipSeek = implode('', unpack('L', $ipSeek . chr(0)));
fseek($fd, $ipSeek);
$ipFlag = fread($fd, 1);
}
if ( $ipFlag == chr(2) )
{
$AddrSeek = fread($fd, 3);
if ( strlen($AddrSeek) < 3 )
{
fclose($fd);
return '- System Error';
}
$ipFlag = fread($fd, 1);
if ( $ipFlag == chr(2) )
{
$AddrSeek2 = fread($fd, 3);
if ( strlen($AddrSeek2) < 3 )
{
fclose($fd);
return 'System Error';
}
$AddrSeek2 = implode('', unpack('L', $AddrSeek2 . chr(0)));
fseek($fd, $AddrSeek2);
}
else
{
fseek($fd, - 1, SEEK_CUR);
}
while ( ($char = fread($fd, 1)) != chr(0) )
$ipAddr2 .= $char;
$AddrSeek = implode('', unpack('L', $AddrSeek . chr(0)));
fseek($fd, $AddrSeek);
while ( ($char = fread($fd, 1)) != chr(0) )
$ipAddr1 .= $char;
}
else
{
fseek($fd, - 1, SEEK_CUR);
while ( ($char = fread($fd, 1)) != chr(0) )
$ipAddr1 .= $char;
$ipFlag = fread($fd, 1);
if ( $ipFlag == chr(2) )
{
$AddrSeek2 = fread($fd, 3);
if ( strlen($AddrSeek2) < 3 )
{
fclose($fd);
return 'System Error';
}
$AddrSeek2 = implode('', unpack('L', $AddrSeek2 . chr(0)));
fseek($fd, $AddrSeek2);
}
else
{
fseek($fd, - 1, SEEK_CUR);
}
while ( ($char = fread($fd, 1)) != chr(0) )
$ipAddr2 .= $char;
}
fclose($fd);
if ( preg_match('/http/i', $ipAddr2) )
{
$ipAddr2 = '';
}
$ipaddr = "$ipAddr1 $ipAddr2";
$ipaddr = preg_replace('/CZ88\.NET/is', '', $ipaddr);
$ipaddr = preg_replace('/^\s*/is', '', $ipaddr);
$ipaddr = preg_replace('/\s*$/is', '', $ipaddr);
if ( preg_match('/http/i', $ipaddr) || $ipaddr == '' )
{
$ipaddr = 'Unknown';
}
return $ipaddr;
}