Add ability to list available configs

src/nitrokey/trussed/admin_app.py

@@ -30,6 +30,7 @@ class AdminCommand(Enum):
     SET_CONFIG = 0x83
     FACTORY_RESET = 0x84
     FACTORY_RESET_APP = 0x85
+    LIST_AVAILABLE_CONFIG = 0x86
 
     def is_legacy_command(self) -> bool:
         if self == AdminCommand.UPDATE:
@@ -150,6 +151,21 @@ def check(cls, i: int, msg: str) -> None:
             raise Exception(f"{msg}: {error}")
 
 
+class ConfigField:
+    name: str
+    requires_touch: bool
+    requires_reboot: bool
+    destructive: bool
+
+    def __init__(
+        self, name: str, requires_touch: bool, requires_reboot: bool, destructive: bool
+    ):
+        self.name = name
+        self.requires_touch = requires_touch
+        self.requires_reboot = requires_reboot
+        self.destructive = destructive
+
+
 class AdminApp:
     def __init__(self, device: TrussedDevice) -> None:
         self.device = device
@@ -266,6 +282,38 @@ def set_config(self, key: str, value: str) -> None:
         assert reply
         ConfigStatus.check(reply[0], "Failed to set config value")
 
+    def list_available_config(self) -> list[ConfigField]:
+        reply = self._call(AdminCommand.LIST_AVAILABLE_CONFIG)
+        # Function not supported, return values for 1.7.0 release
+        if not reply:
+            return [
+                ConfigField(
+                    "fido.disable_skip_up_timeout",
+                    False,
+                    False,
+                    False,
+                ),
+                ConfigField(
+                    "opcard.use_se050_backend",
+                    True,
+                    True,
+                    True,
+                ),
+            ]
+        parsed = cbor.decode(reply)
+        assert isinstance(parsed, list)
+        ret = []
+        for field in parsed:
+            ret.append(
+                ConfigField(
+                    field["name"],
+                    field["requires_touch"],
+                    field["requires_reboot"],
+                    field["destructive"],
+                )
+            )
+        return ret
+
     def factory_reset(self) -> bool:
         try:
             reply = self._call(AdminCommand.FACTORY_RESET, response_len=1)