TSIG::fromWire() - Code Metrics - Inspection of "Merge pull request #67 from Badcow/Message" - Badcow/DNS - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (f0bd78)

by Sam

created 2020-03-04 20:01 UTC

TSIG::fromWire() A

↳ Parent: TSIG

Complexity

Conditions	2
Paths	2

Size

Total Lines	30
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	20
CRAP Score	2.0004

Importance

Changes

Metric	Value
cc	2
eloc	20
nc	2
nop	3
dl	0
loc	30
ccs	20
cts	21
cp	0.9524
crap	2.0004
rs	9.6
c	0
b	0
f	0

<?php

declare(strict_types=1);

/*
 * This file is part of Badcow DNS Library.
 *
 * (c) Samuel Williams <[email protected]>
 *
 * 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\ParseException;
use Badcow\DNS\Parser\Tokens;
use Badcow\DNS\Rcode;
use Badcow\DNS\Validator;

/**
 * {@link https://tools.ietf.org/html/rfc2845}.
 */
class TSIG implements RdataInterface
{
    use RdataTrait;

    const TYPE = 'TSIG';
    const TYPE_CODE = 250;

    /**
     * Name of the algorithm in domain name syntax.
     *
     * @var string
     */
    private $algorithmName;

    /**
     * @var \DateTime
     */
    private $timeSigned;

    /**
     * Seconds of error permitted in time signed.
     *
     * @var int
     */
    private $fudge;

    /**
     * Message authentication code.
     *
     * @var string
     */
    private $mac;

    /**
     * @var int
     */
    private $originalId;

    /**
     * @var int
     */
    private $error = Rcode::NOERROR;

    /**
     * @var string
     */
    private $otherData;

    /**
     * @return string
     */
    public function getAlgorithmName(): string
    {
        return $this->algorithmName;
    }

    /**
     * @param string $algorithmName
     */
    public function setAlgorithmName(string $algorithmName): void
    {
        if (!Validator::fullyQualifiedDomainName($algorithmName)) {
            throw new \InvalidArgumentException('Algorithm name must be in the form of a fully qualified domain name.');
        }

        $this->algorithmName = $algorithmName;
    }

    /**
     * @return \DateTime
     */
    public function getTimeSigned(): \DateTime
    {
        return $this->timeSigned;
    }

    /**
     * @param \DateTime $timeSigned
     */
    public function setTimeSigned(\DateTime $timeSigned): void
    {
        $this->timeSigned = $timeSigned;
    }

    /**
     * @return int
     */
    public function getFudge(): int
    {
        return $this->fudge;
    }

    /**
     * @param int $fudge
     */
    public function setFudge(int $fudge): void
    {
        if (!Validator::isUnsignedInteger($fudge, 16)) {
            throw new \InvalidArgumentException(sprintf('Fudge must be an unsigned 16-bit integer, "%d" given.', $fudge));
        }
        $this->fudge = $fudge;
    }

    /**
     * @return string
     */
    public function getMac(): string
    {
        return $this->mac;
    }

    /**
     * @param string $mac
     */
    public function setMac(string $mac): void
    {
        $this->mac = $mac;
    }

    /**
     * @return int
     */
    public function getOriginalId(): int
    {
        return $this->originalId;
    }

    /**
     * @param int $originalId
     */
    public function setOriginalId(int $originalId): void
    {
        if (!Validator::isUnsignedInteger($originalId, 16)) {
            throw new \InvalidArgumentException(sprintf('Original ID must be an unsigned 16-bit integer, "%d" given.', $originalId));
        }
        $this->originalId = $originalId;
    }

    /**
     * @return int
     */
    public function getError(): int
    {
        return $this->error;
    }

    /**
     * @param int $error
     */
    public function setError(int $error): void
    {
        if (!Validator::isUnsignedInteger($error, 16)) {
            throw new \InvalidArgumentException(sprintf('Error must be an unsigned 16-bit integer, "%d" given.', $error));
        }
        $this->error = $error;
    }

    /**
     * @return string
     */
    public function getOtherData(): string
    {
        return $this->otherData;
    }

    /**
     * @param string $otherData
     */
    public function setOtherData(string $otherData): void
    {
        $this->otherData = $otherData;
    }

    /**
     * {@inheritdoc}
     */
    public function toText(): string
    {
        return sprintf('%s %d %d %s %d %d %s',
            $this->algorithmName,
            $this->timeSigned->format('U'),
            $this->fudge,
            base64_encode($this->mac),
            $this->originalId,
            $this->error,
            base64_encode($this->otherData)
        );
    }

    /**
     * {@inheritdoc}
     */
    public function toWire(): string
    {
        $timeSigned = (int) $this->timeSigned->format('U');
        $hex1 = (0xffff00000000 & $timeSigned) >> 32;
        $hex2 = (0x0000ffff0000 & $timeSigned) >> 16;
        $hex3 = 0x00000000ffff & $timeSigned;

        $wire = self::encodeName($this->algorithmName);
        $wire .= pack('nnnnn', $hex1, $hex2, $hex3, $this->fudge, strlen($this->mac));
        $wire .= $this->mac;
        $wire .= pack('nnn', $this->originalId, $this->error, strlen($this->otherData));
        $wire .= $this->otherData;

        return $wire;
    }

    /**
     * {@inheritdoc}
     *
     * @return TSIG
     *
     * @throws ParseException
     */
    public static function fromText(string $text): RdataInterface
    {
        $rdata = explode(Tokens::SPACE, $text);
        $tsig = new self();
        $tsig->setAlgorithmName((string) array_shift($rdata));
        if (false === $timeSigned = \DateTime::createFromFormat('U', (string) array_shift($rdata))) {
            throw new ParseException('Unable to decode TSIG time signed.');
        }
        $tsig->setTimeSigned($timeSigned);
        $tsig->setFudge((int) array_shift($rdata));

        if (false === $mac = base64_decode((string) array_shift($rdata))) {
            throw new ParseException('Unable to decode TSIG MAC. Malformed base64 string.');
        }
        $tsig->setMac($mac);

        $tsig->setOriginalId((int) array_shift($rdata));
        $tsig->setError((int) array_shift($rdata));

        if (false === $otherData = base64_decode((string) array_shift($rdata))) {
            throw new ParseException('Unable to decode TSIG other data. Malformed base64 string.');
        }
        $tsig->setOtherData($otherData);

        return $tsig;
    }

    /**
     * {@inheritdoc}
     *
     * @throws DecodeException
     *
     * @return TSIG
     */
    public static function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): RdataInterface
    {
        $tsig = new self();

        $tsig->setAlgorithmName(self::decodeName($rdata, $offset));

        $args = unpack('n<hex1>/n<hex2>/n<hex3>/n<fudge>/n<macLen>', $rdata, $offset);
        $offset += 10;

        $timeSigned = ($args['<hex1>'] << 32) + ($args['<hex2>'] << 16) + $args['<hex3>'];
        if (false === $objTimeSigned = \DateTime::createFromFormat('U', (string) $timeSigned)) {
            throw new DecodeException(static::TYPE, $rdata);
        }

        $macLen = (int) $args['<macLen>'];
        $tsig->setFudge($args['<fudge>']);
        $tsig->setTimeSigned($objTimeSigned);
        $tsig->setMac(substr($rdata, $offset, $macLen));
        $offset += $macLen;

        $args = unpack('n<id>/n<error>/n<otherLen>', $rdata, (int) $offset);
        $offset += 6;
        $otherLen = (int) $args['<otherLen>'];

        $tsig->setOriginalId($args['<id>']);
        $tsig->setError($args['<error>']);
        $tsig->setOtherData(substr($rdata, (int) $offset, $otherLen));
        $offset += $otherLen;

        return $tsig;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		/*
6		* This file is part of Badcow DNS Library.
7		*
8		* (c) Samuel Williams <[email protected]>
9		*
10		* For the full copyright and license information, please view the LICENSE
11		* file that was distributed with this source code.
12		*/
13
14		namespace Badcow\DNS\Rdata;
15
16		use Badcow\DNS\Parser\ParseException;
17		use Badcow\DNS\Parser\Tokens;
18		use Badcow\DNS\Rcode;
19		use Badcow\DNS\Validator;
20
21		/**
22		* {@link https://tools.ietf.org/html/rfc2845}.
23		*/
24		class TSIG implements RdataInterface
25		{
26		use RdataTrait;
27
28		const TYPE = 'TSIG';
29		const TYPE_CODE = 250;
30
31		/**
32		* Name of the algorithm in domain name syntax.
33		*
34		* @var string
35		*/
36		private $algorithmName;
37
38		/**
39		* @var \DateTime
40		*/
41		private $timeSigned;
42
43		/**
44		* Seconds of error permitted in time signed.
45		*
46		* @var int
47		*/
48		private $fudge;
49
50		/**
51		* Message authentication code.
52		*
53		* @var string
54		*/
55		private $mac;
56
57		/**
58		* @var int
59		*/
60		private $originalId;
61
62		/**
63		* @var int
64		*/
65		private $error = Rcode::NOERROR;
66
67		/**
68		* @var string
69		*/
70		private $otherData;
71
72		/**
73		* @return string
74		*/
75	2	public function getAlgorithmName(): string
76		{
77	2	return $this->algorithmName;
78		}
79
80		/**
81		* @param string $algorithmName
82		*/
83	4	public function setAlgorithmName(string $algorithmName): void
84		{
85	4	if (!Validator::fullyQualifiedDomainName($algorithmName)) {
86		throw new \InvalidArgumentException('Algorithm name must be in the form of a fully qualified domain name.');
87		}
88
89	4	$this->algorithmName = $algorithmName;
90	4	}
91
92		/**
93		* @return \DateTime
94		*/
95	2	public function getTimeSigned(): \DateTime
96		{
97	2	return $this->timeSigned;
98		}
99
100		/**
101		* @param \DateTime $timeSigned
102		*/
103	4	public function setTimeSigned(\DateTime $timeSigned): void
104		{
105	4	$this->timeSigned = $timeSigned;
106	4	}
107
108		/**
109		* @return int
110		*/
111	2	public function getFudge(): int
112		{
113	2	return $this->fudge;
114		}
115
116		/**
117		* @param int $fudge
118		*/
119	4	public function setFudge(int $fudge): void
120		{
121	4	if (!Validator::isUnsignedInteger($fudge, 16)) {
122		throw new \InvalidArgumentException(sprintf('Fudge must be an unsigned 16-bit integer, "%d" given.', $fudge));
123		}
124	4	$this->fudge = $fudge;
125	4	}
126
127		/**
128		* @return string
129		*/
130	2	public function getMac(): string
131		{
132	2	return $this->mac;
133		}
134
135		/**
136		* @param string $mac
137		*/
138	4	public function setMac(string $mac): void
139		{
140	4	$this->mac = $mac;
141	4	}
142
143		/**
144		* @return int
145		*/
146	2	public function getOriginalId(): int
147		{
148	2	return $this->originalId;
149		}
150
151		/**
152		* @param int $originalId
153		*/
154	4	public function setOriginalId(int $originalId): void
155		{
156	4	if (!Validator::isUnsignedInteger($originalId, 16)) {
157		throw new \InvalidArgumentException(sprintf('Original ID must be an unsigned 16-bit integer, "%d" given.', $originalId));
158		}
159	4	$this->originalId = $originalId;
160	4	}
161
162		/**
163		* @return int
164		*/
165	2	public function getError(): int
166		{
167	2	return $this->error;
168		}
169
170		/**
171		* @param int $error
172		*/
173	4	public function setError(int $error): void
174		{
175	4	if (!Validator::isUnsignedInteger($error, 16)) {
176		throw new \InvalidArgumentException(sprintf('Error must be an unsigned 16-bit integer, "%d" given.', $error));
177		}
178	4	$this->error = $error;
179	4	}
180
181		/**
182		* @return string
183		*/
184	2	public function getOtherData(): string
185		{
186	2	return $this->otherData;
187		}
188
189		/**
190		* @param string $otherData
191		*/
192	4	public function setOtherData(string $otherData): void
193		{
194	4	$this->otherData = $otherData;
195	4	}
196
197		/**
198		* {@inheritdoc}
199		*/
200	1	public function toText(): string
201		{
202	1	return sprintf('%s %d %d %s %d %d %s',
203	1	$this->algorithmName,
204	1	$this->timeSigned->format('U'),
205	1	$this->fudge,
206	1	base64_encode($this->mac),
207	1	$this->originalId,
208	1	$this->error,
209	1	base64_encode($this->otherData)
210		);
211		}
212
213		/**
214		* {@inheritdoc}
215		*/
216	1	public function toWire(): string
217		{
218	1	$timeSigned = (int) $this->timeSigned->format('U');
219	1	$hex1 = (0xffff00000000 & $timeSigned) >> 32;
220	1	$hex2 = (0x0000ffff0000 & $timeSigned) >> 16;
221	1	$hex3 = 0x00000000ffff & $timeSigned;
222
223	1	$wire = self::encodeName($this->algorithmName);
224	1	$wire .= pack('nnnnn', $hex1, $hex2, $hex3, $this->fudge, strlen($this->mac));
225	1	$wire .= $this->mac;
226	1	$wire .= pack('nnn', $this->originalId, $this->error, strlen($this->otherData));
227	1	$wire .= $this->otherData;
228
229	1	return $wire;
230		}
231
232		/**
233		* {@inheritdoc}
234		*
235		* @return TSIG
236		*
237		* @throws ParseException
238		*/
239	1	public static function fromText(string $text): RdataInterface
240		{
241	1	$rdata = explode(Tokens::SPACE, $text);
242	1	$tsig = new self();
243	1	$tsig->setAlgorithmName((string) array_shift($rdata));
244	1	if (false === $timeSigned = \DateTime::createFromFormat('U', (string) array_shift($rdata))) {
245		throw new ParseException('Unable to decode TSIG time signed.');
246		}
247	1	$tsig->setTimeSigned($timeSigned);
248	1	$tsig->setFudge((int) array_shift($rdata));
249
250	1	if (false === $mac = base64_decode((string) array_shift($rdata))) {
251		throw new ParseException('Unable to decode TSIG MAC. Malformed base64 string.');
252		}
253	1	$tsig->setMac($mac);
254
255	1	$tsig->setOriginalId((int) array_shift($rdata));
256	1	$tsig->setError((int) array_shift($rdata));
257
258	1	if (false === $otherData = base64_decode((string) array_shift($rdata))) {
259		throw new ParseException('Unable to decode TSIG other data. Malformed base64 string.');
260		}
261	1	$tsig->setOtherData($otherData);
262
263	1	return $tsig;
264		}
265
266		/**
267		* {@inheritdoc}
268		*
269		* @throws DecodeException
270		*
271		* @return TSIG
272		*/
273	1	public static function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): RdataInterface
274		{
275	1	$tsig = new self();
276
277	1	$tsig->setAlgorithmName(self::decodeName($rdata, $offset));
278
279	1	$args = unpack('n<hex1>/n<hex2>/n<hex3>/n<fudge>/n<macLen>', $rdata, $offset);
280	1	$offset += 10;
281
282	1	$timeSigned = ($args['<hex1>'] << 32) + ($args['<hex2>'] << 16) + $args['<hex3>'];
283	1	if (false === $objTimeSigned = \DateTime::createFromFormat('U', (string) $timeSigned)) {
284		throw new DecodeException(static::TYPE, $rdata);
285		}
286
287	1	$macLen = (int) $args['<macLen>'];
288	1	$tsig->setFudge($args['<fudge>']);
289	1	$tsig->setTimeSigned($objTimeSigned);
290	1	$tsig->setMac(substr($rdata, $offset, $macLen));
291	1	$offset += $macLen;
292
293	1	$args = unpack('n<id>/n<error>/n<otherLen>', $rdata, (int) $offset);
294	1	$offset += 6;
295	1	$otherLen = (int) $args['<otherLen>'];
296
297	1	$tsig->setOriginalId($args['<id>']);
298	1	$tsig->setError($args['<error>']);
299	1	$tsig->setOtherData(substr($rdata, (int) $offset, $otherLen));
300	1	$offset += $otherLen;
301
302	1	return $tsig;
303		}
304		}
305

Badcow / DNS

Branch — master (f0bd78)

TSIG::fromWire() A

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