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<?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\Parser\Tokens;
use Badcow\DNS\Validator;
/**
* Class CaaRdata.
*
* CAA is defined in RFC 6844
*
* @see https://tools.ietf.org/html/rfc6844
*
* @author Samuel Williams <sam@badcow.co>
*/
class CAA implements RdataInterface
{
use RdataTrait;
public const TYPE = 'CAA';
public const TYPE_CODE = 257;
public const TAG_ISSUE = 'issue';
public const TAG_ISSUEWILD = 'issuewild';
public const TAG_IODEF = 'iodef';
public const ALLOWED_TAGS = [self::TAG_ISSUE, self::TAG_ISSUEWILD, self::TAG_IODEF];
/**
* It is currently used to represent the critical flag.
*
* @var int|null
*/
private $flag;
/**
* An ASCII string that represents the identifier of the property represented by the record.
* The RFC currently defines 3 available tags:
* - issue: explicitly authorizes a single certificate authority to issue a certificate (any type) for the hostname.
* - issuewild: explicitly authorizes a single certificate authority to issue a wildcard certificate (and only wildcard) for the hostname.
* - iodef: specifies a URL to which a certificate authority may report policy violations.
*
* @var string|null
*/
private $tag;
/**
* @var string|null
*/
private $value;
/**
* @return int
*/
public function getFlag(): ?int
{
return $this->flag;
}
/**
* @throws \InvalidArgumentException
*/
public function setFlag(int $flag): void
{
if (!Validator::isUnsignedInteger($flag, 8)) {
throw new \InvalidArgumentException('Flag must be an unsigned 8-bit integer.');
}
$this->flag = $flag;
}
/**
* @return string
*/
public function getTag(): ?string
{
return $this->tag;
}
/**
* @throws \InvalidArgumentException
*/
public function setTag(string $tag): void
{
$tag = strtolower($tag);
if (!in_array($tag, static::ALLOWED_TAGS)) {
throw new \InvalidArgumentException('Tag can be one of this type "issue", "issuewild", or "iodef".');
}
$this->tag = $tag;
}
public function getValue(): ?string
{
return $this->value;
}
public function setValue(string $value): void
{
$this->value = $value;
}
public function toText(): string
{
if (!isset($this->tag) || !isset($this->flag) || !isset($this->value)) {
throw new \InvalidArgumentException('All CAA parameters must be set.');
}
return sprintf(
'%d %s "%s"',
$this->flag,
$this->tag ?? '',
$this->value ?? ''
);
}
public function toWire(): string
{
if (!isset($this->tag) || !isset($this->flag) || !isset($this->value)) {
throw new \InvalidArgumentException('All CAA parameters must be set.');
}
return chr($this->flag).
chr(strlen($this->tag)).
$this->tag.
$this->value;
}
public function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): void
{
$this->setFlag(ord($rdata[$offset]));
++$offset;
$tagLen = ord($rdata[$offset]);
++$offset;
$this->setTag(substr($rdata, $offset, $tagLen));
$offset += $tagLen;
$valueLen = ($rdLength ?? strlen($rdata)) - 2 - $tagLen;
$this->setValue(substr($rdata, $offset, $valueLen));
$offset = $offset += $valueLen;
}
public function fromText(string $text): void
{
$rdata = explode(Tokens::SPACE, $text);
$this->setFlag((int) array_shift($rdata));
$this->setTag((string) array_shift($rdata));
$rdata = implode('', $rdata);
$this->setValue(trim($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 |
|