Add API endpoint for add-on for his own config (#2515)

* Add API endpoint for add-on for his own config

* allow access his config

supervisor/api/__init__.py

@@ -348,6 +348,7 @@ class RestAPI(CoreSysAttributes):
                 web.post(
                     "/addons/{addon}/options/validate", api_addons.options_validate
                 ),
+                web.get("/addons/{addon}/options/config", api_addons.options_config),
                 web.post("/addons/{addon}/rebuild", api_addons.rebuild),
                 web.get("/addons/{addon}/logs", api_addons.logs),
                 web.get("/addons/{addon}/icon", api_addons.icon),

supervisor/api/addons.py

@@ -102,7 +102,7 @@ from ..const import (
 )
 from ..coresys import CoreSysAttributes
 from ..docker.stats import DockerStats
-from ..exceptions import APIError
+from ..exceptions import APIError, APIForbidden
 from ..validate import docker_ports
 from .utils import api_process, api_process_raw, api_validate
 
@@ -343,6 +343,19 @@ class APIAddons(CoreSysAttributes):
 
         return data
 
+    @api_process
+    async def options_config(self, request: web.Request) -> None:
+        """Validate user options for add-on."""
+        slug: str = request.match_info.get("addon")
+        if slug != "self":
+            raise APIForbidden("This can be only read by the Add-on itself!")
+
+        addon = self._extract_addon_installed(request)
+        try:
+            return addon.schema(addon.options)
+        except vol.Invalid:
+            raise APIError("Invalid configuration data for the add-on") from None
+
     @api_process
     async def security(self, request: web.Request) -> None:
         """Store security options for add-on."""
@@ -472,14 +485,6 @@ class APIAddons(CoreSysAttributes):
         await asyncio.shield(addon.write_stdin(data))
 
 
-def _pretty_devices(addon: AnyAddon) -> List[str]:
-    """Return a simplified device list."""
-    dev_list = addon.devices
-    if not dev_list:
-        return []
-    return [row.split(":")[0] for row in dev_list]
-
-
 def _pretty_services(addon: AnyAddon) -> List[str]:
     """Return a simplified services role list."""
     return [f"{name}:{access}" for name, access in addon.services_role.items()]

supervisor/api/security.py

@@ -51,6 +51,7 @@ OBSERVER_CHECK = re.compile(
 ADDONS_API_BYPASS = re.compile(
     r"^(?:"
     r"|/addons/self/(?!security|update)[^/]+"
+    r"|/addons/self/options/config"
     r"|/info"
     r"|/hardware/trigger"
     r"|/services.*"