Developer
<?php
namespace Egulias\EmailValidator\Parser;
use Doctrine\Common\Lexer\Token;
use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Warning\TLD;
use Egulias\EmailValidator\Result\Result;
use Egulias\EmailValidator\Result\ValidEmail;
use Egulias\EmailValidator\Result\InvalidEmail;
use Egulias\EmailValidator\Result\Reason\DotAtEnd;
use Egulias\EmailValidator\Result\Reason\DotAtStart;
use Egulias\EmailValidator\Warning\DeprecatedComment;
use Egulias\EmailValidator\Result\Reason\CRLFAtTheEnd;
use Egulias\EmailValidator\Result\Reason\LabelTooLong;
use Egulias\EmailValidator\Result\Reason\NoDomainPart;
use Egulias\EmailValidator\Result\Reason\ConsecutiveAt;
use Egulias\EmailValidator\Result\Reason\DomainTooLong;
use Egulias\EmailValidator\Result\Reason\CharNotAllowed;
use Egulias\EmailValidator\Result\Reason\DomainHyphened;
use Egulias\EmailValidator\Result\Reason\ExpectingATEXT;
use Egulias\EmailValidator\Parser\CommentStrategy\DomainComment;
use Egulias\EmailValidator\Result\Reason\ExpectingDomainLiteralClose;
use Egulias\EmailValidator\Parser\DomainLiteral as DomainLiteralParser;
class DomainPart extends PartParser
{
public const DOMAIN_MAX_LENGTH = 253;
public const LABEL_MAX_LENGTH = 63;
/**
* @var string
*/
protected $domainPart = '';
/**
* @var string
*/
protected $label = '';
public function parse() : Result
{
$this->lexer->clearRecorded();
$this->lexer->startRecording();
$this->lexer->moveNext();
$domainChecks = $this->performDomainStartChecks();
if ($domainChecks->isInvalid()) {
return $domainChecks;
}
if (((array) $this->lexer->token)['type'] === EmailLexer::S_AT) {
return new InvalidEmail(new ConsecutiveAt(), ((array) $this->lexer->token)['value']);
}
$result = $this->doParseDomainPart();
if ($result->isInvalid()) {
return $result;
}
$end = $this->checkEndOfDomain();
if ($end->isInvalid()) {
return $end;
}
$this->lexer->stopRecording();
$this->domainPart = $this->lexer->getAccumulatedValues();
$length = strlen($this->domainPart);
if ($length > self::DOMAIN_MAX_LENGTH) {
return new InvalidEmail(new DomainTooLong(), ((array) $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(), ((array) $this->lexer->token)['value']);
}
if ($prev['type'] === EmailLexer::S_HYPHEN) {
return new InvalidEmail(new DomainHyphened('Hypen found at the end of the domain'), $prev['value']);
}
if (((array) $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 (((array) $this->lexer->token)['type'] === EmailLexer::S_OPENPARENTHESIS) {
$this->warnings[DeprecatedComment::CODE] = new DeprecatedComment();
}
return new ValidEmail();
}
private function checkEmptyDomain() : Result
{
$thereIsNoDomain = ((array) $this->lexer->token)['type'] === EmailLexer::S_EMPTY ||
(((array) $this->lexer->token)['type'] === EmailLexer::S_SP &&
!$this->lexer->isNextToken(EmailLexer::GENERIC));
if ($thereIsNoDomain) {
return new InvalidEmail(new NoDomainPart(), ((array) $this->lexer->token)['value']);
}
return new ValidEmail();
}
private function checkInvalidTokensAfterAT() : Result
{
if (((array) $this->lexer->token)['type'] === EmailLexer::S_DOT) {
return new InvalidEmail(new DotAtStart(), ((array) $this->lexer->token)['value']);
}
if (((array) $this->lexer->token)['type'] === EmailLexer::S_HYPHEN) {
return new InvalidEmail(new DomainHyphened('After AT'), ((array) $this->lexer->token)['value']);
}
return new ValidEmail();
}
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 (((array) $this->lexer->token)['type'] === EmailLexer::S_OPENPARENTHESIS ||
((array) $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 (((array) $this->lexer->token)['type'] === EmailLexer::S_OPENBRACKET) {
$literalResult = $this->parseDomainLiteral();
$this->addTLDWarnings($tldMissing);
return $literalResult;
}
$labelCheck = $this->checkLabelLength();
if ($labelCheck->isInvalid()) {
return $labelCheck;
}
$FwsResult = $this->parseFWS();
if($FwsResult->isInvalid()) {
return $FwsResult;
}
$domain .= ((array) $this->lexer->token)['value'];
if (((array) $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();
} while (null !== ((array) $this->lexer->token)['type']);
$labelCheck = $this->checkLabelLength(true);
if ($labelCheck->isInvalid()) {
return $labelCheck;
}
$this->addTLDWarnings($tldMissing);
$this->domainPart = $domain;
return new ValidEmail();
}
/**
* @psalm-param array|Token<int, string> $token
*/
private function checkNotAllowedChars($token) : Result
{
$notAllowed = [EmailLexer::S_BACKSLASH => true, EmailLexer::S_SLASH=> true];
if (isset($notAllowed[((array) $token)['type']])) {
return new InvalidEmail(new CharNotAllowed(), ((array) $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(), ((array) $this->lexer->token)['value']);
}
$domainLiteralParser = new DomainLiteralParser($this->lexer);
$result = $domainLiteralParser->parse();
$this->warnings = array_merge($this->warnings, $domainLiteralParser->getWarnings());
return $result;
}
protected function checkDomainPartExceptions(array $prev, bool $hasComments) : Result
{
if (((array) $this->lexer->token)['type'] === EmailLexer::S_OPENBRACKET && $prev['type'] !== EmailLexer::S_AT) {
return new InvalidEmail(new ExpectingATEXT('OPENBRACKET not after AT'), ((array) $this->lexer->token)['value']);
}
if (((array) $this->lexer->token)['type'] === EmailLexer::S_HYPHEN && $this->lexer->isNextToken(EmailLexer::S_DOT)) {
return new InvalidEmail(new DomainHyphened('Hypen found near DOT'), ((array) $this->lexer->token)['value']);
}
if (((array) $this->lexer->token)['type'] === EmailLexer::S_BACKSLASH
&& $this->lexer->isNextToken(EmailLexer::GENERIC)) {
return new InvalidEmail(new ExpectingATEXT('Escaping following "ATOM"'), ((array) $this->lexer->token)['value']);
}
return $this->validateTokens($hasComments);
}
protected function validateTokens(bool $hasComments) : Result
{
$validDomainTokens = array(
EmailLexer::GENERIC => true,
EmailLexer::S_HYPHEN => true,
EmailLexer::S_DOT => true,
);
if ($hasComments) {
$validDomainTokens[EmailLexer::S_OPENPARENTHESIS] = true;
$validDomainTokens[EmailLexer::S_CLOSEPARENTHESIS] = true;
}
if (!isset($validDomainTokens[((array) $this->lexer->token)['type']])) {
return new InvalidEmail(new ExpectingATEXT('Invalid token in domain: ' . ((array) $this->lexer->token)['value']), ((array) $this->lexer->token)['value']);
}
return new ValidEmail();
}
private function checkLabelLength(bool $isEndOfDomain = false) : Result
{
if (((array) $this->lexer->token)['type'] === EmailLexer::S_DOT || $isEndOfDomain) {
if ($this->isLabelTooLong($this->label)) {
return new InvalidEmail(new LabelTooLong(), ((array) $this->lexer->token)['value']);
}
$this->label = '';
}
$this->label .= ((array) $this->lexer->token)['value'];
return new ValidEmail();
}
private function isLabelTooLong(string $label) : bool
{
if (preg_match('/[^\x00-\x7F]/', $label)) {
idn_to_ascii($label, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46, $idnaInfo);
return (bool) ($idnaInfo['errors'] & IDNA_ERROR_LABEL_TOO_LONG);
}
return strlen($label) > self::LABEL_MAX_LENGTH;
}
private function addTLDWarnings(bool $isTLDMissing) : void
{
if ($isTLDMissing) {
$this->warnings[TLD::CODE] = new TLD();
}
}
public function domainPart() : string
{
return $this->domainPart;
}
}
Developer
Welcome to the Kueue Pay Payment Gateway Solutions Developer API Documentation. This comprehensive guide will empower you to seamlessly integrate our advanced payment gateway into your website, enhancing your customers’ payment experience and enabling efficient transaction processing. The Kueue Pay Developer API is designed for developers and entrepreneurs who seek simplicity, security, and reliability in their payment processing solutions.
The Kueue Pay Developer API allows you to seamlessly integrate Kueue Pay’s Payment Gateway Solutions into your website, enabling secure and efficient debit and credit card transactions. With our API, you can initiate payments, check payment statuses, and even process refunds, all while ensuring a smooth and streamlined payment experience for your customers.