Fix validation of email addresses with IDNA domains (#1490067)

CHANGELOG

@@ -60,6 +60,7 @@ CHANGELOG Roundcube Webmail
 - Fix handling of email addresses with quoted domain part (#1490040)
 - Fix comm_path update on task switch (#1490041)
 - Fix error in MSSQL update script 2013061000.sql (#1490061)
+- Fix validation of email addresses with IDNA domains (#1490067)
 
 RELEASE 1.0.2
 -------------

program/lib/Roundcube/rcube_utils.php

@@ -103,13 +103,14 @@ class rcube_utils
             }
 
             foreach ($domain_array as $part) {
-                if (!preg_match('/^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]))$/', $part)) {
+                if (!preg_match('/^((xn--)?([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]))$/', $part)) {
                     return false;
                 }
             }
 
             // last domain part
-            if (preg_match('/[^a-zA-Z]/', array_pop($domain_array))) {
+            $last_part = array_pop($domain_array);
+            if (strpos($last_part, 'xn--') !== 0 && preg_match('/[^a-zA-Z]/', $last_part)) {
                 return false;
             }
 

tests/Framework/Utils.php

@@ -29,6 +29,7 @@ class Framework_Utils extends PHPUnit_Framework_TestCase
             array('email@domain.name', '.name is valid Top Level Domain name'),
             array('email@domain.co.jp', 'Dot in Top Level Domain name also considered valid (use co.jp as example here)'),
             array('firstname-lastname@domain.com', 'Dash in address field is valid'),
+            array('test@xn--e1aaa0cbbbcacac.xn--p1ai', 'IDNA domain'),
         );
     }