Email addresses with single quote should not be valid (#268)

* Fixes issue for email addresses with single quote in domain part
* specify version in cli for older php versions

Co-authored-by: Eduardo Gulias Davis <eduardomgulias@gmail.com>

.travis.yml

@@ -31,7 +31,7 @@ matrix:
 
 install:
   - if [ "$deps" = "low" ]; then composer update --prefer-lowest; else composer install; fi
-  - if [ "$psalm" = "yes" ]; then composer require --dev vimeo/psalm; fi
+  - if [ "$psalm" = "yes" ]; then composer require --dev vimeo/psalm:3.18.2; fi
 
 before_script:
   - mkdir -p build/logs
@@ -42,3 +42,4 @@ script:
 
 after_script:
   - php vendor/bin/coveralls
+  

README.md

@@ -5,7 +5,7 @@
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/egulias/EmailValidator/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/egulias/EmailValidator/?branch=master)
 [![SensioLabsInsight](https://insight.sensiolabs.com/projects/22ba6692-9c02-42e5-a65d-1c5696bfffc6/small.png)](https://insight.sensiolabs.com/projects/22ba6692-9c02-42e5-a65d-1c5696bfffc6)
 
-## Suported RFCs ##
+## Supported RFCs ##
 
 This library aims to support:
 

src/EmailLexer.php

@@ -13,6 +13,7 @@ class EmailLexer extends AbstractLexer
     const S_BACKSLASH        = 92;
     const S_DOT              = 46;
     const S_DQUOTE           = 34;
+    const S_SQUOTE           = 39;
     const S_OPENPARENTHESIS  = 49;
     const S_CLOSEPARENTHESIS = 261;
     const S_OPENBRACKET      = 262;
@@ -58,6 +59,7 @@ class EmailLexer extends AbstractLexer
         '/'    => self::S_SLASH,
         ','    => self::S_COMMA,
         '.'    => self::S_DOT,
+        "'"    => self::S_SQUOTE,
         '"'    => self::S_DQUOTE,
         '-'    => self::S_HYPHEN,
         '::'   => self::S_DOUBLECOLON,

src/Exception/UnclosedComment.php

@@ -5,5 +5,5 @@ namespace Egulias\EmailValidator\Exception;
 class UnclosedComment extends InvalidEmail
 {
     const CODE = 146;
-    const REASON = "No colosing comment token found";
+    const REASON = "No closing comment token found";
 }

src/Parser/DomainPart.php

@@ -198,6 +198,9 @@ class DomainPart extends Parser
 
             $domain .= $this->lexer->token['value'];
             $this->lexer->moveNext();
+            if ($this->lexer->token['type'] === EmailLexer::S_SP) {
+                throw new CharNotAllowed();
+            }
         } while (null !== $this->lexer->token['type']);
 
         return $domain;
@@ -332,6 +335,7 @@ class DomainPart extends Parser
     {
         $invalidDomainTokens = array(
             EmailLexer::S_DQUOTE => true,
+            EmailLexer::S_SQUOTE => true,
             EmailLexer::S_SEMICOLON => true,
             EmailLexer::S_GREATERTHAN => true,
             EmailLexer::S_LOWERTHAN => true,

src/Validation/DNSCheckValidation.php

@@ -97,10 +97,7 @@ class DNSCheckValidation implements EmailValidation
      */
     protected function checkDns($host)
     {
-        $variant = INTL_IDNA_VARIANT_2003;
+        $variant = INTL_IDNA_VARIANT_UTS46;
-        if (defined('INTL_IDNA_VARIANT_UTS46')) {
-            $variant = INTL_IDNA_VARIANT_UTS46;
-        }
 
         $host = rtrim(idn_to_ascii($host, IDNA_DEFAULT, $variant), '.') . '.';
 
@@ -118,7 +115,8 @@ class DNSCheckValidation implements EmailValidation
     private function validateDnsRecords($host)
     {
         // Get all MX, A and AAAA DNS records for host
-        $dnsRecords = dns_get_record($host, DNS_MX + DNS_A + DNS_AAAA);
+        // Using @ as workaround to fix https://bugs.php.net/bug.php?id=73149
+        $dnsRecords = @dns_get_record($host, DNS_MX + DNS_A + DNS_AAAA);
 
 
         // No MX, A or AAAA DNS records

tests/EmailValidator/EmailLexerTest.php

@@ -138,6 +138,7 @@ class EmailLexerTests extends TestCase
             array(":", EmailLexer::S_COLON),
             array(".", EmailLexer::S_DOT),
             array("\"", EmailLexer::S_DQUOTE),
+            array("'", EmailLexer::S_SQUOTE),
             array("-", EmailLexer::S_HYPHEN),
             array("\\", EmailLexer::S_BACKSLASH),
             array("/", EmailLexer::S_SLASH),

tests/EmailValidator/Validation/DNSCheckValidationTest.php

@@ -27,7 +27,7 @@ class DNSCheckValidationTest extends TestCase
             ['"Fred\ Bloggs"@ietf.org'],
             ['"Joe.\\Blow"@ietf.org'],
 
-            // unicide
+            // unicode
             ['ñandu.cl'],
         ];
     }
@@ -106,4 +106,4 @@ class DNSCheckValidationTest extends TestCase
         $validation->isValid("example@invalid.example.com", new EmailLexer());
         $this->assertEquals($expectedError, $validation->getError());
     }
-}
+}

tests/EmailValidator/Validation/RFCValidationTest.php

@@ -167,6 +167,8 @@ class RFCValidationTest extends TestCase
             ['test@email<'],
             ['test@email{'],
             ['test@ '],
+            ['test@example.com []'],
+            ["test@example.com'"],
         ];
     }
 
@@ -211,6 +213,7 @@ class RFCValidationTest extends TestCase
             [new CRNoLF(), "example@exa\rmple.co.uk"],
             [new CRNoLF(), "example@[\r]"],
             [new CRNoLF(), "exam\rple@example.co.uk"],
+            [new ExpectingATEXT(), "test@example.com'"],
         ];
     }