ui: Expose key exports on the dbus API.

pantalaimon/daemon.py

@@ -29,7 +29,9 @@ from pantalaimon.ui import (
     glib_loop,
     shutdown_glib_loop,
     DeviceVerifyMessage,
-    DeviceUnverifyMessage
+    DeviceUnverifyMessage,
+    ExportKeysMessage,
+    ImportKeysMessage
 )
 
 
@@ -142,6 +144,25 @@ class ProxyDaemon:
                 else:
                     self._unverify_device(client, device)
 
+            elif isinstance(message, ExportKeysMessage):
+                client = self.pan_clients.get(message.pan_user, None)
+
+                if not client:
+                    return
+
+                path = os.path.abspath(message.file_path)
+                logger.info(f"Exporting keys to {path}")
+
+                try:
+                    client.export_keys(path, message.passphrase)
+                except OSError as e:
+                    logger.warn(f"Error exporint keys for {client.user_id} to "
+                                f"{path} {e}")
+                    pass
+
+            elif isinstance(message, ImportKeysMessage):
+                pass
+
     def get_access_token(self, request):
         # type: (aiohttp.web.BaseRequest) -> str
         """Extract the access token from the request.

pantalaimon/ui.py

@@ -30,6 +30,23 @@ class DevicesMessage(Message):
     devices = attr.ib()
 
 
+@attr.s
+class _KeysOperation(Message):
+    pan_user = attr.ib()
+    file_path = attr.ib()
+    passphrase = attr.ib()
+
+
+@attr.s
+class ImportKeysMessage(_KeysOperation):
+    pass
+
+
+@attr.s
+class ExportKeysMessage(_KeysOperation):
+    pass
+
+
 @attr.s
 class _VerificationMessage(Message):
     pan_user = attr.ib()
@@ -111,9 +128,10 @@ class Devices(dbus.service.Object):
 
 
 class Control(dbus.service.Object):
-    def __init__(self, bus_name, user_list=None):
+    def __init__(self, bus_name, queue, user_list=None):
         super().__init__(bus_name, "/org/pantalaimon/Control")
         self.users = user_list
+        self.queue = queue
 
     @dbus.service.method("org.pantalaimon.control.list_users",
                          out_signature="a(ss)")
@@ -121,8 +139,15 @@ class Control(dbus.service.Object):
         return self.users
 
     @dbus.service.method("org.pantalaimon.control.export_keys",
-                         in_signature="ss")
-    def export_keys(self, user, filepath):
+                         in_signature="sss")
+    def export_keys(self, pan_user, filepath, passphrase):
+        message = ExportKeysMessage(
+            pan_user,
+            filepath,
+            passphrase
+        )
+        self.queue.put(message)
+
         return
 
 
@@ -138,8 +163,7 @@ def glib_loop(receive_queue, send_queue, data_dir):
     users = store.load_all_users()
     devices = store.load_all_devices()
 
-    # TODO update bus data if the asyncio thread tells us so.
-    Control(bus_name, users)
+    Control(bus_name, send_queue, users)
     device_bus = Devices(bus_name, send_queue, devices)
 
     def message_callback():