Add support for catchall aliases.

see #844

modoboa/admin/serializers.py

@@ -166,9 +166,10 @@ class WritableAccountSerializer(AccountSerializer):
 class AliasSerializer(serializers.ModelSerializer):
     """Base Alias serializer."""
 
-    address = lib_fields.DRFEmailFieldUTF8()
+    address = lib_fields.DRFEmailFieldUTF8AndEmptyUser()
     recipients = serializers.ListField(
-        child=lib_fields.DRFEmailFieldUTF8(), allow_empty=False)
+        child=lib_fields.DRFEmailFieldUTF8AndEmptyUser(),
+        allow_empty=False)
 
     class Meta:
         model = admin_models.Alias

modoboa/admin/tests/api.py

@@ -328,6 +328,12 @@ class AliasAPITestCase(ModoAPITestCase):
             address="user_éé@nonlocal.com",
             r_mailbox__isnull=True, r_alias__isnull=True).exists())
 
+        # Create catchall alias
+        data = copy.deepcopy(self.ALIAS_DATA)
+        data["address"] = "@test.com"
+        response = self.client.post(url, data, format="json")
+        self.assertEqual(response.status_code, 201)
+
     def test_update_alias(self):
         """Try to update an alias."""
         alias = models.Alias.objects.get(address="alias@test.com")

modoboa/lib/fields.py

@@ -49,3 +49,17 @@ class DRFEmailFieldUTF8(serializers.CharField):
         validator = validators.UTF8EmailValidator(
             message=self.error_messages["invalid"])
         self.validators.append(validator)
+
+
+class DRFEmailFieldUTF8AndEmptyUser(serializers.CharField):
+    """Custom DRF email field to support UTF8 and empty local part."""
+
+    default_error_messages = {
+        "invalid": ugettext_lazy("Enter a valid email address.")
+    }
+
+    def __init__(self, **kwargs):
+        super(DRFEmailFieldUTF8AndEmptyUser, self).__init__(**kwargs)
+        validator = validators.UTF8AndEmptyUserEmailValidator(
+            message=self.error_messages["invalid"])
+        self.validators.append(validator)

modoboa/lib/validators.py

@@ -53,11 +53,11 @@ class UTF8EmailValidator(EmailValidator):
 validate_utf8_email = UTF8EmailValidator()
 
 
-class UT8AndEmptyUserEmailValidator(UTF8EmailValidator):
+class UTF8AndEmptyUserEmailValidator(UTF8EmailValidator):
 
     """Same as upper + allows empty local part."""
 
     user_regex = re.compile(
         ur"(^$|" + UTF8EmailValidator.user_regex_raw, re.IGNORECASE)
 
-validate_utf8_and_empty_user_email = UT8AndEmptyUserEmailValidator()
+validate_utf8_and_empty_user_email = UTF8AndEmptyUserEmailValidator()