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antiaginglove@216.73.216.231: ~ $ 
<?php

declare(strict_types=1);

/*
 * This file is part of Badcow DNS Library.
 *
 * (c) Samuel Williams <sam@badcow.co>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Badcow\DNS\Rdata;

use Badcow\DNS\Message;
use Badcow\DNS\Parser\Tokens;

class NSEC implements RdataInterface
{
    use RdataTrait;

    public const TYPE = 'NSEC';
    public const TYPE_CODE = 47;

    /**
     * The Next Domain field contains the next owner name (in the canonical
     * ordering of the zone) that has authoritative data or contains a
     * delegation point NS RR set.
     * {@link https://tools.ietf.org/html/rfc4034#section-4.1.1}.
     *
     * @var string
     */
    private $nextDomainName;

    /**
     * @var array
     */
    private $types = [];

    public function getNextDomainName(): string
    {
        return $this->nextDomainName;
    }

    public function setNextDomainName(string $nextDomainName): void
    {
        $this->nextDomainName = $nextDomainName;
    }

    public function addType(string $type): void
    {
        $this->types[] = $type;
    }

    /**
     * Clears the types from the RDATA.
     */
    public function clearTypes(): void
    {
        $this->types = [];
    }

    public function getTypes(): array
    {
        return $this->types;
    }

    public function toText(): string
    {
        return sprintf(
            '%s %s',
            $this->nextDomainName,
            implode(' ', $this->types)
        );
    }

    /**
     * @throws UnsupportedTypeException
     */
    public function toWire(): string
    {
        return Message::encodeName($this->nextDomainName).self::renderBitmap($this->types);
    }

    public function fromText(string $text): void
    {
        $iterator = new \ArrayIterator(explode(Tokens::SPACE, $text));
        $this->setNextDomainName($iterator->current());
        $iterator->next();
        while ($iterator->valid()) {
            $this->addType($iterator->current());
            $iterator->next();
        }
    }

    /**
     * @throws UnsupportedTypeException|DecodeException
     */
    public function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): void
    {
        $this->setNextDomainName(Message::decodeName($rdata, $offset));
        $types = self::parseBitmap($rdata, $offset);
        array_map([$this, 'addType'], $types);
    }

    /**
     * @return string[]
     *
     * @throws UnsupportedTypeException
     * @throws DecodeException
     */
    public static function parseBitmap(string $rdata, int &$offset): array
    {
        $bytes = unpack('C*', $rdata, $offset);

        if (!is_array($bytes)) {
            throw new DecodeException(static::TYPE, $rdata);
        }

        $types = [];

        while (count($bytes) > 0) {
            $mask = '';
            $window = array_shift($bytes);
            $len = array_shift($bytes);
            for ($i = 0; $i < $len; ++$i) {
                $mask .= str_pad(decbin(array_shift($bytes)), 8, '0', STR_PAD_LEFT);
            }
            $offset = 0;
            while (false !== $pos = strpos($mask, '1', $offset)) {
                $types[] = Types::getName((int) $window * 256 + $pos);
                $offset = $pos + 1;
            }
        }

        return $types;
    }

    /**
     * @param string[] $types
     *
     * @throws UnsupportedTypeException
     */
    public static function renderBitmap(array $types): string
    {
        /** @var string[] $blocks */
        $blocks = [];

        foreach ($types as $type) {
            $int = Types::getTypeCode($type);
            $window = $int >> 8;
            $int = $int & 0b11111111;
            $mod = $int % 8;
            $mask = $blocks[$window] ?? str_repeat("\0", 32);
            $byteNum = ($int - $mod) / 8;
            $byte = ord($mask[$byteNum]) | (128 >> $mod);
            $mask[$byteNum] = chr($byte);
            $blocks[$window] = $mask;
        }

        $encoded = '';
        foreach ($blocks as $n => $mask) {
            $mask = rtrim($mask, "\0");
            $encoded .= chr($n).chr(strlen($mask)).$mask;
        }

        return $encoded;
    }
}

Filemanager

DIR : / usr/ local/ jetapps/ var/ lib/ 3rdparty/ Badcow/ DNS/ Rdata/
Name Type Size Permission Actions
A.php File 1.94 KB 0644
AAAA.php File 1.07 KB 0644
AFSDB.php File 2.2 KB 0644
APL.php File 4.12 KB 0644
CAA.php File 4.06 KB 0644
CDNSKEY.php File 450 B 0644
CDS.php File 431 B 0644
CERT.php File 5.49 KB 0644
CNAME.php File 1.33 KB 0644
CSYNC.php File 2.46 KB 0644
DHCID.php File 5.65 KB 0644
DLV.php File 455 B 0644
DNAME.php File 674 B 0644
DNSKEY.php File 1.02 KB 0644
DS.php File 3.93 KB 0644
DecodeException.php File 933 B 0644
Factory.php File 17.37 KB 0644
HINFO.php File 2.19 KB 0644
HIP.php File 4.4 KB 0644
IPSECKEY.php File 9.34 KB 0644
KEY.php File 3.25 KB 0644
KX.php File 2.45 KB 0644
LOC.php File 7.36 KB 0644
MX.php File 2.46 KB 0644
NAPTR.php File 7.06 KB 0644
NS.php File 442 B 0644
NSEC.php File 4.13 KB 0644
NSEC3.php File 8.09 KB 0644
NSEC3PARAM.php File 3.65 KB 0644
OPT.php File 2.79 KB 0644
PTR.php File 4.24 KB 0644
PolymorphicRdata.php File 2.02 KB 0644
RP.php File 1.82 KB 0644
RRSIG.php File 8.04 KB 0644
RdataInterface.php File 1.7 KB 0644
RdataTrait.php File 803 B 0644
SIG.php File 378 B 0644
SOA.php File 5.78 KB 0644
SPF.php File 432 B 0644
SRV.php File 4.61 KB 0644
SSHFP.php File 3.36 KB 0644
TA.php File 441 B 0644
TKEY.php File 7.41 KB 0644
TLSA.php File 4.69 KB 0644
TSIG.php File 6.5 KB 0644
TXT.php File 3.44 KB 0644
Types.php File 10.33 KB 0644
URI.php File 3.67 KB 0644
UnknownType.php File 2.2 KB 0644
UnsupportedTypeException.php File 477 B 0644