SecurityMiddleware => Add assignment secret check

ExpressAPI/src/middlewares/SecurityMiddleware.ts

@@ -26,6 +26,8 @@ class SecurityMiddleware {
                     return req.boundParams.assignment?.published ?? false;
                 case SecurityCheckType.EXERCISE_SECRET.valueOf():
                     return (req.headers.exercisesecret as string | undefined) === req.boundParams.exercise!.secret;
+                case SecurityCheckType.ASSIGNMENT_SECRET:
+                    return (req.headers.assignmentsecret as string | undefined) === req.boundParams.assignment!.secret;
                 default:
                     return false;
             }

ExpressAPI/src/types/SecurityCheckType.ts

@@ -5,6 +5,7 @@ enum SecurityCheckType {
     ASSIGNMENT_STAFF        = 'assignmentStaff',
     ASSIGNMENT_IS_PUBLISHED = 'assignmentIsPublished',
     EXERCISE_SECRET         = 'exerciseSecret',
+    ASSIGNMENT_SECRET       = 'assignmentSecret',
 }