From d5fc516b510f51994b7c9704ea672bb7cbae3a72 Mon Sep 17 00:00:00 2001
From: Markus Koetter <koetter@cispa.de>
Date: Fri, 30 Sep 2022 10:21:44 +0200
Subject: [PATCH] ZoneNameValidator - allow "localhost." as domain

index by 1 skips the leading dot

    tld_re = (
        r"\."  # dot

https://github.com/django/django/blob/ae509f8f0804dea0eea89e27329014616c9d4cc0/django/core/validators.py#L85
---
 src/conftest.py              | 2 +-
 src/dino/zoneeditor/views.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/conftest.py b/src/conftest.py
index 860fcdb..d22b1ed 100644
--- a/src/conftest.py
+++ b/src/conftest.py
@@ -175,7 +175,7 @@ def mock_pdns_get_zones(mocker):
     rval = [
         'example.com.',
         'example.org.',
-    ] + [f'example{i}.org' for i in range(500)]
+    ] + [f'example{i}.org' for i in range(500)] + ['localhost.']
     return mocker.patch('dino.pdns_api.pdns.get_zones', return_value=rval)
 
 
diff --git a/src/dino/zoneeditor/views.py b/src/dino/zoneeditor/views.py
index 80adc24..d16b87f 100644
--- a/src/dino/zoneeditor/views.py
+++ b/src/dino/zoneeditor/views.py
@@ -78,7 +78,7 @@ class ZoneNameValidator(RegexValidator):
     hostname_re = r'[_a-z' + URLValidator.ul + r'0-9](?:[a-z' + URLValidator.ul + r'0-9-]{0,61}[a-z' + URLValidator.ul + r'0-9])?'
     # identical to URLValidator.domain_re, except for leading underscroes
     domain_re = r'(?:\.(?!-)[_a-z' + URLValidator.ul + r'0-9-]{1,63}(?<!-))*'
-    unanchored_regex = fr'{hostname_re}{domain_re}{URLValidator.tld_re}'
+    unanchored_regex = fr'({hostname_re}{domain_re}{URLValidator.tld_re}|{URLValidator.tld_re[1:]})'
     regex = fr'^{unanchored_regex}\Z'