kill any from streaming API Implementation (#14251)

* chore: add JsonValue type

* refactor: kill any from Connection.ts

* refactor: fix StreamEventEmitter contains undefined instead of null

* refactor: kill any from channels

* docs(changelog): Fix: Steaming APIが不正なデータを受けた場合の動作が不安定である問題

* fix license header

* fix lints

1 files changed, 7 insertions, 3 deletions

diff --git a/packages/backend/src/server/api/stream/channels/queue-stats.ts b/packages/backend/src/server/api/stream/channels/queue-stats.ts
index 061aa76904..ff7e740226 100644
--- a/packages/backend/src/server/api/stream/channels/queue-stats.ts
+++ b/packages/backend/src/server/api/stream/channels/queue-stats.ts
@@ -6,6 +6,7 @@
 import Xev from 'xev';
 import { Injectable } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
+import type { JsonObject, JsonValue } from '@/misc/json-value.js';
 import Channel, { type MiChannelService } from '../channel.js';
 
 const ev = new Xev();
@@ -22,19 +23,22 @@ class QueueStatsChannel extends Channel {
 	}
 
 	@bindThis
-	public async init(params: any) {
+	public async init(params: JsonObject) {
 		ev.addListener('queueStats', this.onStats);
 	}
 
 	@bindThis
-	private onStats(stats: any) {
+	private onStats(stats: JsonObject) {
 		this.send('stats', stats);
 	}
 
 	@bindThis
-	public onMessage(type: string, body: any) {
+	public onMessage(type: string, body: JsonValue) {
 		switch (type) {
 			case 'requestLog':
+				if (typeof body !== 'object' || body === null || Array.isArray(body)) return;
+				if (typeof body.id !== 'string') return;
+				if (typeof body.length !== 'number') return;
 				ev.once(`queueStatsLog:${body.id}`, statsLog => {
 					this.send('statsLog', statsLog);
 				});