loopback_ban_exempt: force-add egen custom_component (custom_components er ellers gitignored)

custom_components/loopback_ban_exempt/__init__.py

@@ -0,0 +1,64 @@
+"""Exempt loopback addresses (127.0.0.1 / ::1) from Home Assistant's HTTP login-ban handling.
+
+Home Assistant has no built-in way to whitelist an IP from the ``http`` ban
+system. Local tools running on the same host (e.g. a VS Code session that
+queries ``/api/config`` without a token) therefore show up as failed login
+attempts from ``127.0.0.1`` and can eventually get localhost banned, which
+would break legitimate local access.
+
+This integration wraps ``process_wrong_login`` so that any request whose remote
+address is a loopback address is silently ignored. External addresses are still
+processed normally, so ``login_attempts_threshold`` protection stays intact.
+"""
+
+from __future__ import annotations
+
+import logging
+from ipaddress import ip_address
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.typing import ConfigType
+
+_LOGGER = logging.getLogger(__name__)
+
+DOMAIN = "loopback_ban_exempt"
+
+# Modules that hold a reference to process_wrong_login (either the definition
+# itself or an ``from ... import process_wrong_login``). All must be patched.
+_TARGET_MODULES = (
+    "homeassistant.components.http.ban",
+    "homeassistant.components.auth.login_flow",
+    "homeassistant.components.websocket_api.auth",
+)
+
+
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
+    """Patch the ban handler to skip loopback addresses."""
+    from homeassistant.components.http import ban as ban_module
+
+    original = ban_module.process_wrong_login
+
+    async def process_wrong_login(request):
+        """Ignore loopback, otherwise defer to the original handler."""
+        remote = getattr(request, "remote", None)
+        try:
+            if remote is not None and ip_address(remote).is_loopback:
+                return None
+        except ValueError:
+            pass
+        return await original(request)
+
+    patched = 0
+    for mod_path in _TARGET_MODULES:
+        try:
+            module = __import__(mod_path, fromlist=["process_wrong_login"])
+        except ImportError:
+            continue
+        if getattr(module, "process_wrong_login", None) is not None:
+            module.process_wrong_login = process_wrong_login
+            patched += 1
+
+    _LOGGER.info(
+        "Loopback ban exemption active (patched %s reference(s))", patched
+    )
+    return True

custom_components/loopback_ban_exempt/manifest.json

@@ -0,0 +1,9 @@
+{
+  "domain": "loopback_ban_exempt",
+  "name": "Loopback Ban Exempt",
+  "version": "1.0.0",
+  "documentation": "https://www.home-assistant.io/integrations/http/",
+  "dependencies": ["http"],
+  "codeowners": [],
+  "iot_class": "local_push"
+}