Merge bb921297c7 into f1eb17f66c

CHANGELOG.md

@@ -276,6 +276,7 @@
 - Fix: アンテナ・クリップ・リスト・ウェブフックがロールポリシーの上限より一つ多く作れてしまうのを修正 (#14036)
 - Fix: notRespondingSinceが実装される前に不通になったインスタンスが自動的に配信停止にならない (#14059)
 - Fix: FTT有効時、タイムライン用エンドポイントで`sinceId`にキャッシュ内最古のものより古いものを指定した場合に正しく結果が返ってこない問題を修正
+- Fix: レートリミットのfactorが二回適用されて二乗の効果がある問題を修正 (#13997)
 - Fix: 自分以外のクリップ内のノート個数が見えることがあるのを修正
 - Fix: 空文字列のリアクションはフォールバックされるように
 - Fix: リノートにリアクションできないように

packages/backend/src/server/api/ApiCallService.ts

@@ -326,19 +326,15 @@ export class ApiCallService implements OnApplicationShutdown {
 
 			if (factor > 0) {
 				// Rate limit
-				await this.rateLimiterService.limit(limit as IEndpointMeta['limit'] & { key: NonNullable<string> }, limitActor, factor).catch(err => {
-					if ('info' in err) {
-						// errはLimiter.LimiterInfoであることが期待される
-						throw new ApiError({
-							message: 'Rate limit exceeded. Please try again later.',
-							code: 'RATE_LIMIT_EXCEEDED',
-							id: 'd5826d14-3982-4d2e-8011-b9e9f02499ef',
-							httpStatusCode: 429,
-						}, err.info);
-					} else {
-						throw new TypeError('information must be a rate-limiter information.');
-					}
-				});
+				const rateLimit = await this.rateLimiterService.limit(limit as IEndpointMeta['limit'] & { key: NonNullable<string> }, limitActor, factor);
+				if (rateLimit != null) {
+					throw new ApiError({
+						message: 'Rate limit exceeded. Please try again later.',
+						code: 'RATE_LIMIT_EXCEEDED',
+						id: 'd5826d14-3982-4d2e-8011-b9e9f02499ef',
+						httpStatusCode: 429,
+					}, rateLimit.info);
+				}
 			}
 		}
 

packages/backend/src/server/api/RateLimiterService.ts

@@ -12,6 +12,14 @@ import { LoggerService } from '@/core/LoggerService.js';
 import { bindThis } from '@/decorators.js';
 import type { IEndpointMeta } from './endpoints.js';
 
+type RateLimitInfo = {
+	code: 'BRIEF_REQUEST_INTERVAL',
+	info: Limiter.LimiterInfo,
+} | {
+	code: 'RATE_LIMIT_EXCEEDED',
+	info: Limiter.LimiterInfo,
+}
+
 @Injectable()
 export class RateLimiterService {
 	private logger: Logger;
@@ -31,77 +39,57 @@ export class RateLimiterService {
 	}
 
 	@bindThis
-	public limit(limitation: IEndpointMeta['limit'] & { key: NonNullable<string> }, actor: string, factor = 1) {
-		{
-			if (this.disabled) {
-				return Promise.resolve();
-			}
+	private checkLimiter(options: Limiter.LimiterOption): Promise<Limiter.LimiterInfo> {
+		return new Promise<Limiter.LimiterInfo>((resolve, reject) => {
+			new Limiter(options).get((err, info) => {
+				if (err) {
+					return reject(err);
+				}
+				resolve(info);
+			});
+		});
+	}
 
-			// Short-term limit
-			const min = new Promise<void>((ok, reject) => {
-				const minIntervalLimiter = new Limiter({
-					id: `${actor}:${limitation.key}:min`,
-					duration: limitation.minInterval! * factor,
-					max: 1,
-					db: this.redisClient,
-				});
+	@bindThis
+	public async limit(limitation: IEndpointMeta['limit'] & { key: NonNullable<string> }, actor: string, factor = 1): Promise<RateLimitInfo | null> {
+		if (this.disabled) {
+			return null;
+		}
 
-				minIntervalLimiter.get((err, info) => {
-					if (err) {
-						return reject({ code: 'ERR', info });
-					}
-
-					this.logger.debug(`${actor} ${limitation.key} min remaining: ${info.remaining}`);
-
-					if (info.remaining === 0) {
-						return reject({ code: 'BRIEF_REQUEST_INTERVAL', info });
-					} else {
-						if (hasLongTermLimit) {
-							return max.then(ok, reject);
-						} else {
-							return ok();
-						}
-					}
-				});
+		// Short-term limit
+		if (limitation.minInterval != null) {
+			const info = await this.checkLimiter({
+				id: `${actor}:${limitation.key}:min`,
+				duration: limitation.minInterval * factor,
+				max: 1,
+				db: this.redisClient,
 			});
 
-			// Long term limit
-			const max = new Promise<void>((ok, reject) => {
-				const limiter = new Limiter({
-					id: `${actor}:${limitation.key}`,
-					duration: limitation.duration! * factor,
-					max: limitation.max! / factor,
-					db: this.redisClient,
-				});
+			this.logger.debug(`${actor} ${limitation.key} min remaining: ${info.remaining}`);
 
-				limiter.get((err, info) => {
-					if (err) {
-						return reject({ code: 'ERR', info });
-					}
-
-					this.logger.debug(`${actor} ${limitation.key} max remaining: ${info.remaining}`);
-
-					if (info.remaining === 0) {
-						return reject({ code: 'RATE_LIMIT_EXCEEDED', info });
-					} else {
-						return ok();
-					}
-				});
-			});
-
-			const hasShortTermLimit = typeof limitation.minInterval === 'number';
-
-			const hasLongTermLimit =
-				typeof limitation.duration === 'number' &&
-				typeof limitation.max === 'number';
-
-			if (hasShortTermLimit) {
-				return min;
-			} else if (hasLongTermLimit) {
-				return max;
-			} else {
-				return Promise.resolve();
+			if (info.remaining === 0) {
+				// eslint-disable-next-line no-throw-literal
+				return { code: 'BRIEF_REQUEST_INTERVAL', info };
 			}
 		}
+
+		// Long term limit
+		if (limitation.duration != null && limitation.max != null) {
+			const info = await this.checkLimiter({
+				id: `${actor}:${limitation.key}`,
+				duration: limitation.duration,
+				max: limitation.max / factor,
+				db: this.redisClient,
+			});
+
+			this.logger.debug(`${actor} ${limitation.key} max remaining: ${info.remaining}`);
+
+			if (info.remaining === 0) {
+				// eslint-disable-next-line no-throw-literal
+				return { code: 'RATE_LIMIT_EXCEEDED', info };
+			}
+		}
+
+		return null;
 	}
 }

packages/backend/src/server/api/SigninApiService.ts

@@ -89,10 +89,9 @@ export class SigninApiService {
 			return { error };
 		}
 
-		try {
 		// not more than 1 attempt per second and not more than 10 attempts per hour
-			await this.rateLimiterService.limit({ key: 'signin', duration: 60 * 60 * 1000, max: 10, minInterval: 1000 }, getIpHash(request.ip));
-		} catch (err) {
+		const rateLimit = await this.rateLimiterService.limit({ key: 'signin', duration: 60 * 60 * 1000, max: 10, minInterval: 1000 }, getIpHash(request.ip));
+		if (rateLimit != null) {
 			reply.code(429);
 			return {
 				error: {