core: fix remote judge langs

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.33.10",
+    "version": "2.33.11",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",

packages/hydrooj/src/handler/problem.ts

@@ -1,4 +1,4 @@
-import { isSafeInteger, flatten } from 'lodash';
+import { isSafeInteger, flatten, intersection } from 'lodash';
 import { FilterQuery, ObjectID } from 'mongodb';
 import AdmZip from 'adm-zip';
 import { sortFiles } from '@hydrooj/utils/lib/utils';
@@ -277,6 +277,13 @@ export class ProblemSubmitHandler extends ProblemDetailHandler {
             udoc: this.udoc,
             title: this.pdoc.title,
         };
+        if (this.domain.langs) {
+            this.response.body.pdoc.config.langs = intersection(
+                this.response.body.pdoc.config.langs || this.domain.langs.split(','),
+                this.domain.langs.split(','),
+            );
+        }
+        this.response.body.pdoc.config.domainId = this.domainId;
     }
 
     @param('lang', Types.Name)
@@ -287,9 +294,6 @@ export class ProblemSubmitHandler extends ProblemDetailHandler {
         if (this.response.body.pdoc.config?.langs && !this.response.body.pdoc.config.langs.includes(lang)) {
             throw new BadRequestError('Language not allowed.');
         }
-        if (this.domain.langs && !this.domain.langs.includes(lang)) {
-            throw new BadRequestError('Language not allowed');
-        }
         await this.limitRate('add_record', 60, system.get('limit.submission'));
         const rid = await record.add(domainId, this.pdoc.docId, this.user._id, lang, code, true, pretest ? input : undefined);
         const rdoc = await record.get(domainId, rid);