DomainPart::checkLabelLength() - Code Metrics - Inspection of "complaying to RFC1035 about domain names" - egulias/EmailValidator - Measure and Improve Code Quality continuously with Scrutinizer

Test Setup Failed

Push — 3.0.0-dev ( 729ecb...a7a691 )

by Eduardo Gulias

created 2020-11-10 10:25 UTC

DomainPart::checkLabelLength() A

↳ Parent: DomainPart

Complexity

Conditions	4
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	11
rs	9.9
c	0
b	0
f	0
cc	4
nc	2
nop	1

<?php

namespace Egulias\EmailValidator\Parser;

use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Result\InvalidEmail;
use Egulias\EmailValidator\Result\Reason\CharNotAllowed;
use Egulias\EmailValidator\Result\Reason\DomainHyphened;
use Egulias\EmailValidator\Result\Reason\DotAtEnd;
use Egulias\EmailValidator\Result\Reason\DotAtStart;
use Egulias\EmailValidator\Result\Reason\NoDomainPart;
use Egulias\EmailValidator\Result\Reason\ConsecutiveAt;
use Egulias\EmailValidator\Result\Reason\ExpectingATEXT;
use Egulias\EmailValidator\Result\Reason\ExpectingDomainLiteralClose;
use Egulias\EmailValidator\Result\Result;
use Egulias\EmailValidator\Result\ValidEmail;
use Egulias\EmailValidator\Warning\DeprecatedComment;
use Egulias\EmailValidator\Warning\TLD;
use Egulias\EmailValidator\Parser\DomainLiteral as DomainLiteralParser;
use Egulias\EmailValidator\Result\Reason\CRLFAtTheEnd;
use Egulias\EmailValidator\Result\Reason\DomainTooLong;
use Egulias\EmailValidator\Result\Reason\LabelTooLong;

class DomainPart extends Parser
{
    const DOMAIN_MAX_LENGTH = 253;
    const LABEL_MAX_LENGTH = 63;


    /**
     * @var string
     */
    protected $domainPart = '';

    public function parse() : Result
    {
        $this->lexer->moveNext();

        $domainChecks = $this->performDomainStartChecks();
        if ($domainChecks->isInvalid()) {
            return $domainChecks;
        }

        if ($this->lexer->token['type'] === EmailLexer::S_AT) {
            return new InvalidEmail(new ConsecutiveAt(), $this->lexer->token['value']);
        }
        $domain = $this->doParseDomainPart();
        if ($domain->isInvalid()) {
            return $domain;
        }

        $length = strlen($this->domainPart);

        $end = $this->checkEndOfDomain();
        if ($end->isInvalid()) {
            return $end;
        }

        if ($length > self::DOMAIN_MAX_LENGTH) {
            //$this->warnings[DomainTooLong::CODE] = new DomainTooLong();
            return new InvalidEmail(new DomainTooLong(), $this->lexer->token['value']);
        }

        return new ValidEmail();
    }

    private function checkEndOfDomain() : Result
    {
        $prev = $this->lexer->getPrevious();
        if ($prev['type'] === EmailLexer::S_DOT) {
            return new InvalidEmail(new DotAtEnd(), $this->lexer->token['value']);
        }
        if ($prev['type'] === EmailLexer::S_HYPHEN) {
            return new InvalidEmail(new DomainHyphened('Hypen found at the end of the domain'), $prev['value']);
        }

        if ($this->lexer->token['type'] === EmailLexer::S_SP) {
            return new InvalidEmail(new CRLFAtTheEnd(), $prev['value']);
        }
        return new ValidEmail();

    }

    private function performDomainStartChecks() : Result
    {
        $invalidTokens = $this->checkInvalidTokensAfterAT();
        if ($invalidTokens->isInvalid()) {
            return $invalidTokens;
        }
        
        $missingDomain = $this->checkEmptyDomain();
        if ($missingDomain->isInvalid()) {
            return $missingDomain;
        }

        if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS) {
            $this->warnings[DeprecatedComment::CODE] = new DeprecatedComment();
        }
        return new ValidEmail();
    }

    private function checkEmptyDomain() : Result
    {
        $thereIsNoDomain = $this->lexer->token['type'] === EmailLexer::S_EMPTY ||
            ($this->lexer->token['type'] === EmailLexer::S_SP &&
            !$this->lexer->isNextToken(EmailLexer::GENERIC));

        if ($thereIsNoDomain) {
            return new InvalidEmail(new NoDomainPart(), $this->lexer->token['value']);
        }

        return new ValidEmail();
    }

    private function checkInvalidTokensAfterAT() : Result
    {
        if ($this->lexer->token['type'] === EmailLexer::S_DOT) {
            return new InvalidEmail(new DotAtStart(), $this->lexer->token['value']);
        }
        if ($this->lexer->token['type'] === EmailLexer::S_HYPHEN) {
            return new InvalidEmail(new DomainHyphened('After AT'), $this->lexer->token['value']);
        }
        return new ValidEmail();
    }

    /**
     * @return string
     */
    public function getDomainPart()
    {
        return $this->domainPart;
    }

    protected function parseComments(): Result

    {
        $commentParser = new Comment($this->lexer, new DomainComment());
        $result = $commentParser->parse();
        $this->warnings = array_merge($this->warnings, $commentParser->getWarnings());

        return $result;
    }

    protected function doParseDomainPart() : Result
    {
        $tldMissing = true;
        $hasComments = false;
        $domain = '';
        do {
            $prev = $this->lexer->getPrevious();

            $notAllowedChars = $this->checkNotAllowedChars($this->lexer->token);
            if ($notAllowedChars->isInvalid()) {
                return $notAllowedChars;
            }

            if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS || 

                $this->lexer->token['type'] === EmailLexer::S_CLOSEPARENTHESIS ) {
                $hasComments = true;
                $commentsResult = $this->parseComments();

                //Invalid comment parsing
                if($commentsResult->isInvalid()) {
                    return $commentsResult;
                }
            }

            $dotsResult = $this->checkConsecutiveDots();
            if ($dotsResult->isInvalid()) {
                return $dotsResult;
            }

            if ($this->lexer->token['type'] === EmailLexer::S_OPENBRACKET) {
                $literalResult = $this->parseDomainLiteral();

                $this->addTLDWarnings($tldMissing);
                //Invalid literal parsing
                //if($literalResult->isInvalid()) {
                //    return $literalResult;
                //}
                return $literalResult;
            }

            $labelCheck = $this->checkLabelLength($prev);
            if ($labelCheck->isInvalid()) {
                return $labelCheck;
            }

            $FwsResult = $this->parseFWS();
            if($FwsResult->isInvalid()) {
                return $FwsResult;
            }

            $domain .= $this->lexer->token['value'];

            if ($this->lexer->token['type'] === EmailLexer::S_DOT && $this->lexer->isNextToken(EmailLexer::GENERIC)) {

                $tldMissing = false;
            }

            $exceptionsResult = $this->checkDomainPartExceptions($prev, $hasComments);
            if ($exceptionsResult->isInvalid()) {
                return $exceptionsResult;
            }
            $this->lexer->moveNext();
            //if ($this->lexer->token['type'] === EmailLexer::S_SP) {
            //    return new InvalidEmail(new CharNotAllowed(), $this->lexer->token['value']);
            //}

        } while (null !== $this->lexer->token['type']);

        $this->addTLDWarnings($tldMissing);

        $this->domainPart = $domain;
        return new ValidEmail();
    }

    private function checkNotAllowedChars(array $token) : Result
    {
        $notAllowed = [EmailLexer::S_BACKSLASH => true, EmailLexer::S_SLASH=> true];
        if (isset($notAllowed[$token['type']])) {
            return new InvalidEmail(new CharNotAllowed(), $token['value']);
        }
        return new ValidEmail();
    }

    /**
     * @return Result
     */
    protected function parseDomainLiteral() : Result
    {

        try {
            $this->lexer->find(EmailLexer::S_CLOSEBRACKET);
        } catch (\RuntimeException $e) {
            return new InvalidEmail(new ExpectingDomainLiteralClose(), $this->lexer->token['value']);
        }

        $domainLiteralParser = new DomainLiteralParser($this->lexer);
        $result = $domainLiteralParser->parse();
        $this->warnings = array_merge($this->warnings, $domainLiteralParser->getWarnings());
        return $result;
    }

    /**
     * @return InvalidEmail|ValidEmail
     */
    protected function checkDomainPartExceptions(array $prev, bool $hasComments) : Result
    {
        $invalidDomainTokens = array(
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
            EmailLexer::S_DQUOTE => true,
            EmailLexer::S_SQUOTE => true,
            EmailLexer::S_SEMICOLON => true,
            EmailLexer::S_GREATERTHAN => true,
            EmailLexer::S_LOWERTHAN => true,
        );

        $validDomainTokens = array(
            EmailLexer::GENERIC => true,
            EmailLexer::S_HYPHEN => true,
            EmailLexer::S_DOT => true,
        );

        if ($hasComments) {
            $validDomainTokens[EmailLexer::S_OPENPARENTHESIS] = true;
            $validDomainTokens[EmailLexer::S_CLOSEPARENTHESIS] = true;
        }

        if ($this->lexer->token['type'] === EmailLexer::S_OPENQBRACKET && $prev['type'] !== EmailLexer::S_AT) {
            return new InvalidEmail(new ExpectingATEXT('OPENBRACKET not after AT'), $this->lexer->token['value']);
        }

        if ($this->lexer->token['type'] === EmailLexer::S_HYPHEN && $this->lexer->isNextToken(EmailLexer::S_DOT)) {
            return new InvalidEmail(new DomainHyphened('Hypen found near DOT'), $this->lexer->token['value']);
        }

        if ($this->lexer->token['type'] === EmailLexer::S_BACKSLASH
            && $this->lexer->isNextToken(EmailLexer::GENERIC)) {
            return new InvalidEmail(new ExpectingATEXT('Escaping following "ATOM"'), $this->lexer->token['value']);
        }

        if (!isset($validDomainTokens[$this->lexer->token['type']])) {

            return new InvalidEmail(new ExpectingATEXT('Invalid token in domain: ' . $this->lexer->token['value']), $this->lexer->token['value']);
        }

        return new ValidEmail();
    }

    protected function checkLabelLength(array $prev) : Result
    {
        if ($this->lexer->token['type'] === EmailLexer::S_DOT &&
            $prev['type'] === EmailLexer::GENERIC &&
            strlen($prev['value']) > self::LABEL_MAX_LENGTH
        ) {
            //$this->warnings[LabelTooLong::CODE] = new LabelTooLong();
           return new InvalidEmail(new LabelTooLong(), $this->lexer->token['value']);
        }
        return new ValidEmail();
    }

    private function addTLDWarnings(bool $isTLDMissing) : void
    {
        if ($isTLDMissing) {
            $this->warnings[TLD::CODE] = new TLD();
        }
    }
}

1		<?php
2
3		namespace Egulias\EmailValidator\Parser;
4
5		use Egulias\EmailValidator\EmailLexer;
6		use Egulias\EmailValidator\Result\InvalidEmail;
7		use Egulias\EmailValidator\Result\Reason\CharNotAllowed;
8		use Egulias\EmailValidator\Result\Reason\DomainHyphened;
9		use Egulias\EmailValidator\Result\Reason\DotAtEnd;
10		use Egulias\EmailValidator\Result\Reason\DotAtStart;
11		use Egulias\EmailValidator\Result\Reason\NoDomainPart;
12		use Egulias\EmailValidator\Result\Reason\ConsecutiveAt;
13		use Egulias\EmailValidator\Result\Reason\ExpectingATEXT;
14		use Egulias\EmailValidator\Result\Reason\ExpectingDomainLiteralClose;
15		use Egulias\EmailValidator\Result\Result;
16		use Egulias\EmailValidator\Result\ValidEmail;
17		use Egulias\EmailValidator\Warning\DeprecatedComment;
18		use Egulias\EmailValidator\Warning\TLD;
19		use Egulias\EmailValidator\Parser\DomainLiteral as DomainLiteralParser;
20		use Egulias\EmailValidator\Result\Reason\CRLFAtTheEnd;
21		use Egulias\EmailValidator\Result\Reason\DomainTooLong;
22		use Egulias\EmailValidator\Result\Reason\LabelTooLong;
23
24		class DomainPart extends Parser
25		{
26		const DOMAIN_MAX_LENGTH = 253;
27		const LABEL_MAX_LENGTH = 63;
28
29
30		/**
31		* @var string
32		*/
33		protected $domainPart = '';
34
35		public function parse() : Result
36		{
37		$this->lexer->moveNext();
38
39		$domainChecks = $this->performDomainStartChecks();
40		if ($domainChecks->isInvalid()) {
41		return $domainChecks;
42		}
43
44		if ($this->lexer->token['type'] === EmailLexer::S_AT) {
45		return new InvalidEmail(new ConsecutiveAt(), $this->lexer->token['value']);
46		}
47		$domain = $this->doParseDomainPart();
48		if ($domain->isInvalid()) {
49		return $domain;
50		}
51
52		$length = strlen($this->domainPart);
53
54		$end = $this->checkEndOfDomain();
55		if ($end->isInvalid()) {
56		return $end;
57		}
58
59		if ($length > self::DOMAIN_MAX_LENGTH) {
60		//$this->warnings[DomainTooLong::CODE] = new DomainTooLong();
61		return new InvalidEmail(new DomainTooLong(), $this->lexer->token['value']);
62		}
63
64		return new ValidEmail();
65		}
66
67		private function checkEndOfDomain() : Result
68		{
69		$prev = $this->lexer->getPrevious();
70		if ($prev['type'] === EmailLexer::S_DOT) {
71		return new InvalidEmail(new DotAtEnd(), $this->lexer->token['value']);
72		}
73		if ($prev['type'] === EmailLexer::S_HYPHEN) {
74		return new InvalidEmail(new DomainHyphened('Hypen found at the end of the domain'), $prev['value']);
75		}
76
77		if ($this->lexer->token['type'] === EmailLexer::S_SP) {
78		return new InvalidEmail(new CRLFAtTheEnd(), $prev['value']);
79		}
80		return new ValidEmail();
81
82		}
83
84		private function performDomainStartChecks() : Result
85		{
86		$invalidTokens = $this->checkInvalidTokensAfterAT();
87		if ($invalidTokens->isInvalid()) {
88		return $invalidTokens;
89		}
90
91		$missingDomain = $this->checkEmptyDomain();
92		if ($missingDomain->isInvalid()) {
93		return $missingDomain;
94		}
95
96		if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS) {
97		$this->warnings[DeprecatedComment::CODE] = new DeprecatedComment();
98		}
99		return new ValidEmail();
100		}
101
102		private function checkEmptyDomain() : Result
103		{
104		$thereIsNoDomain = $this->lexer->token['type'] === EmailLexer::S_EMPTY \|\|
105		($this->lexer->token['type'] === EmailLexer::S_SP &&
106		!$this->lexer->isNextToken(EmailLexer::GENERIC));
107
108		if ($thereIsNoDomain) {
109		return new InvalidEmail(new NoDomainPart(), $this->lexer->token['value']);
110		}
111
112		return new ValidEmail();
113		}
114
115		private function checkInvalidTokensAfterAT() : Result
116		{
117		if ($this->lexer->token['type'] === EmailLexer::S_DOT) {
118		return new InvalidEmail(new DotAtStart(), $this->lexer->token['value']);
119		}
120		if ($this->lexer->token['type'] === EmailLexer::S_HYPHEN) {
121		return new InvalidEmail(new DomainHyphened('After AT'), $this->lexer->token['value']);
122		}
123		return new ValidEmail();
124		}
125
126		/**
127		* @return string
128		*/
129		public function getDomainPart()
130		{
131		return $this->domainPart;
132		}
133
134	View Code Duplication	protected function parseComments(): Result
		0 ignored issues – show Duplication introduced 2020-08-15 13:14 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
135		{
136		$commentParser = new Comment($this->lexer, new DomainComment());
137		$result = $commentParser->parse();
138		$this->warnings = array_merge($this->warnings, $commentParser->getWarnings());
139
140		return $result;
141		}
142
143		protected function doParseDomainPart() : Result
144		{
145		$tldMissing = true;
146		$hasComments = false;
147		$domain = '';
148		do {
149		$prev = $this->lexer->getPrevious();
150
151		$notAllowedChars = $this->checkNotAllowedChars($this->lexer->token);
152		if ($notAllowedChars->isInvalid()) {
153		return $notAllowedChars;
154		}
155
156	View Code Duplication	if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS \|\|
		0 ignored issues – show Duplication introduced 2016-04-28 23:00 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
157		$this->lexer->token['type'] === EmailLexer::S_CLOSEPARENTHESIS ) {
158		$hasComments = true;
159		$commentsResult = $this->parseComments();
160
161		//Invalid comment parsing
162		if($commentsResult->isInvalid()) {
163		return $commentsResult;
164		}
165		}
166
167		$dotsResult = $this->checkConsecutiveDots();
168		if ($dotsResult->isInvalid()) {
169		return $dotsResult;
170		}
171
172		if ($this->lexer->token['type'] === EmailLexer::S_OPENBRACKET) {
173		$literalResult = $this->parseDomainLiteral();
174
175		$this->addTLDWarnings($tldMissing);
176		//Invalid literal parsing
177		//if($literalResult->isInvalid()) {
178		// return $literalResult;
179		//}
180		return $literalResult;
181		}
182
183		$labelCheck = $this->checkLabelLength($prev);
184		if ($labelCheck->isInvalid()) {
185		return $labelCheck;
186		}
187
188		$FwsResult = $this->parseFWS();
189		if($FwsResult->isInvalid()) {
190		return $FwsResult;
191		}
192
193		$domain .= $this->lexer->token['value'];
194
195	View Code Duplication	if ($this->lexer->token['type'] === EmailLexer::S_DOT && $this->lexer->isNextToken(EmailLexer::GENERIC)) {
		0 ignored issues – show Duplication introduced 2016-05-07 13:54 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
196		$tldMissing = false;
197		}
198
199		$exceptionsResult = $this->checkDomainPartExceptions($prev, $hasComments);
200		if ($exceptionsResult->isInvalid()) {
201		return $exceptionsResult;
202		}
203		$this->lexer->moveNext();
204		//if ($this->lexer->token['type'] === EmailLexer::S_SP) {
205		// return new InvalidEmail(new CharNotAllowed(), $this->lexer->token['value']);
206		//}
207
208		} while (null !== $this->lexer->token['type']);
209
210		$this->addTLDWarnings($tldMissing);
211
212		$this->domainPart = $domain;
213		return new ValidEmail();
214		}
215
216		private function checkNotAllowedChars(array $token) : Result
217		{
218		$notAllowed = [EmailLexer::S_BACKSLASH => true, EmailLexer::S_SLASH=> true];
219		if (isset($notAllowed[$token['type']])) {
220		return new InvalidEmail(new CharNotAllowed(), $token['value']);
221		}
222		return new ValidEmail();
223		}
224
225		/**
226		* @return Result
227		*/
228		protected function parseDomainLiteral() : Result
229		{
230
231		try {
232		$this->lexer->find(EmailLexer::S_CLOSEBRACKET);
233		} catch (\RuntimeException $e) {
234		return new InvalidEmail(new ExpectingDomainLiteralClose(), $this->lexer->token['value']);
235		}
236
237		$domainLiteralParser = new DomainLiteralParser($this->lexer);
238		$result = $domainLiteralParser->parse();
239		$this->warnings = array_merge($this->warnings, $domainLiteralParser->getWarnings());
240		return $result;
241		}
242
243		/**
244		* @return InvalidEmail\|ValidEmail
245		*/
246		protected function checkDomainPartExceptions(array $prev, bool $hasComments) : Result
247		{
248		$invalidDomainTokens = array(
		0 ignored issues – show Unused Code introduced 2020-11-10 10:27 UTC by Report Bug Copy Issue Report `$invalidDomainTokens` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
249		EmailLexer::S_DQUOTE => true,
250		EmailLexer::S_SQUOTE => true,
251		EmailLexer::S_SEMICOLON => true,
252		EmailLexer::S_GREATERTHAN => true,
253		EmailLexer::S_LOWERTHAN => true,
254		);
255
256		$validDomainTokens = array(
257		EmailLexer::GENERIC => true,
258		EmailLexer::S_HYPHEN => true,
259		EmailLexer::S_DOT => true,
260		);
261
262		if ($hasComments) {
263		$validDomainTokens[EmailLexer::S_OPENPARENTHESIS] = true;
264		$validDomainTokens[EmailLexer::S_CLOSEPARENTHESIS] = true;
265		}
266
267		if ($this->lexer->token['type'] === EmailLexer::S_OPENQBRACKET && $prev['type'] !== EmailLexer::S_AT) {
268		return new InvalidEmail(new ExpectingATEXT('OPENBRACKET not after AT'), $this->lexer->token['value']);
269		}
270
271		if ($this->lexer->token['type'] === EmailLexer::S_HYPHEN && $this->lexer->isNextToken(EmailLexer::S_DOT)) {
272		return new InvalidEmail(new DomainHyphened('Hypen found near DOT'), $this->lexer->token['value']);
273		}
274
275		if ($this->lexer->token['type'] === EmailLexer::S_BACKSLASH
276		&& $this->lexer->isNextToken(EmailLexer::GENERIC)) {
277		return new InvalidEmail(new ExpectingATEXT('Escaping following "ATOM"'), $this->lexer->token['value']);
278		}
279
280	View Code Duplication	if (!isset($validDomainTokens[$this->lexer->token['type']])) {
		0 ignored issues – show Duplication introduced 2020-08-23 14:09 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
281		return new InvalidEmail(new ExpectingATEXT('Invalid token in domain: ' . $this->lexer->token['value']), $this->lexer->token['value']);
282		}
283
284		return new ValidEmail();
285		}
286
287		protected function checkLabelLength(array $prev) : Result
288		{
289		if ($this->lexer->token['type'] === EmailLexer::S_DOT &&
290		$prev['type'] === EmailLexer::GENERIC &&
291		strlen($prev['value']) > self::LABEL_MAX_LENGTH
292		) {
293		//$this->warnings[LabelTooLong::CODE] = new LabelTooLong();
294		return new InvalidEmail(new LabelTooLong(), $this->lexer->token['value']);
295		}
296		return new ValidEmail();
297		}
298
299		private function addTLDWarnings(bool $isTLDMissing) : void
300		{
301		if ($isTLDMissing) {
302		$this->warnings[TLD::CODE] = new TLD();
303		}
304		}
305		}

egulias / EmailValidator

Push — 3.0.0-dev ( 729ecb...a7a691 )

DomainPart::checkLabelLength() A

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Duplication

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