Add --force-localserver-for-auth CL arg to EDMarketConnector

EDMarketConnector.py

@@ -68,6 +68,11 @@ if __name__ == '__main__':  # noqa: C901
                         action='store_true'
                         )
 
+    parser.add_argument('--force-localserver-for-auth',
+                        help='Force EDMC to use a localhost webserver for Frontier Auth callback',
+                        action='store_true'
+                        )
+
     args = parser.parse_args()
 
     if args.trace:
@@ -76,6 +81,9 @@ if __name__ == '__main__':  # noqa: C901
     else:
         edmclogger.set_channels_loglevel(logging.DEBUG)
 
+    if args.force_localserver_for_auth:
+        config.set_auth_force_localserver()
+
     def no_other_instance_running() -> bool:  # noqa: CCR001
         """
         Ensure only one copy of the app is running for the configured journal directory.

config.py

@@ -117,6 +117,7 @@ class AbstractConfig(abc.ABC):
     identifier: str
 
     __in_shutdown = False  # Is the application currently shutting down ?
+    __auth_force_localserver = False  # Should we use localhost for auth callback ?
 
     def __init__(self) -> None:
         self.home_path = pathlib.Path.home()
@@ -128,6 +129,13 @@ class AbstractConfig(abc.ABC):
     def shutting_down(self) -> bool:
         return self.__in_shutdown
 
+    def set_auth_force_localserver(self):
+        self.__auth_force_localserver = True
+
+    @property
+    def auth_force_localserver(self) -> bool:
+        return self.__auth_force_localserver
+
     @property
     def app_dir(self) -> str:
         """Return a string version of app_dir."""