CWS API: Allow admin to override official status of submissions

Author: gollux

cms/server/contest/handlers/api.py

@@ -153,6 +153,15 @@ def post(self, task_name: str):
         # analysis mode.
         official = self.r_params["actual_phase"] == 0
 
+        # If the submission is performed by the administrator acting on behalf
+        # of a contestant, allow overriding.
+        if self.impersonated_by_admin:
+            try:
+                official = self.get_boolean_argument('override_official', official)
+            except ValueError as err:
+                self.json({"error": str(err)}, 400)
+                return
+
         try:
             submission = accept_submission(
                 self.sql_session, self.service.file_cacher, self.current_user,

cms/server/contest/handlers/base.py

@@ -183,6 +183,20 @@ def is_api(self):
         """Return whether it's an API request."""
         return self.api_request
 
+    def get_boolean_argument(self, name: str, default: bool) -> bool:
+        """Parse a Boolean request argument."""
+
+        arg = self.get_argument(name, "")
+        if arg == "":
+            return default
+
+        if arg == '0':
+            return False
+        elif arg == '1':
+            return True
+        else:
+            raise ValueError(f"Cannot parse boolean argument {name}")
+
 
 class ContestListHandler(BaseHandler):
     def get(self):