Add support for internationalized email address local part

zendframework · Apr 5, 2017 · 1a0ffdb · 1a0ffdb
1 parent 55e55e0
commit 1a0ffdb
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Showing 2 changed files with 23 additions and 1 deletion.
diff --git a/src/EmailAddress.php b/src/EmailAddress.php
@@ -9,6 +9,8 @@
 
 namespace Zend\Validator;
 
+use UConverter;
+
 class EmailAddress extends AbstractValidator
 {
     const INVALID            = 'emailAddressInvalid';
@@ -342,6 +344,8 @@ protected function validateLocalPart()
         $atext = 'a-zA-Z0-9\x21\x23\x24\x25\x26\x27\x2a\x2b\x2d\x2f\x3d\x3f\x5e\x5f\x60\x7b\x7c\x7d\x7e';
         if (preg_match('/^[' . $atext . ']+(\x2e+[' . $atext . ']+)*$/', $this->localPart)) {
             $result = true;
+        } elseif ($this->validateInternationalizedLocalPart()) {
+            $result = true;
         } else {
             // Try quoted string format (RFC 5321 Chapter 4.1.2)
 
@@ -360,6 +364,22 @@ protected function validateLocalPart()
         return $result;
     }
 
+    protected function validateInternationalizedLocalPart()
+    {
+        if (
+            extension_loaded('intl')
+            && false === UConverter::transcode($this->localPart, 'UTF-8', 'UTF-8')
+        ) {
+            // invalid utf?
+            return false;
+        }
+        $atext = 'a-zA-Z0-9\x21\x23\x24\x25\x26\x27\x2a\x2b\x2d\x2f\x3d\x3f\x5e\x5f\x60\x7b\x7c\x7d\x7e';
+        // RFC 6532 extends atext to include non-ascii utf
+        // @see https://tools.ietf.org/html/rfc6532#section-3.1
+        $uatext = $atext . '\x{80}-\x{FFFF}';
+        return (bool) preg_match('/^[' . $uatext . ']+(\x2e+[' . $uatext . ']+)*$/u', $this->localPart);
+    }
+
     /**
      * Returns the found MX Record information after validation including weight for further processing
      *

diff --git a/test/EmailAddressTest.php b/test/EmailAddressTest.php
@@ -235,6 +235,9 @@ public function validEmailAddresses()
         ];
 
         if (extension_loaded('intl')) {
+            $return['иван@письмо.рф']          = ['иван@письмо.рф'];
+            $return['öäü@ä-umlaut.de']         = ['öäü@ä-umlaut.de'];
+            $return['frédé[email protected]']     = ['frédé[email protected]'];
             $return['bob@тест.рф']             = ['bob@тест.рф'];
             $return['[email protected]'] = ['[email protected]'];
         }
@@ -277,7 +280,6 @@ public function invalidEmailAddresses()
             'bob @ domain.com'                                                         => ['bob @ domain.com'],
             '[email protected]'                                                     => ['[email protected]'],
             '"bob%[email protected]'                                                    => ['"bob%[email protected]'],
-            'иван@письмо.рф'                                                           => ['иван@письмо.рф'],
             'multiline'                                                                => ['bob
 
             @domain.com'],