merge: Coordinated Security Release (!761)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/761

packages/backend/src/core/DownloadService.ts

@@ -6,7 +6,6 @@
 import * as fs from 'node:fs';
 import * as stream from 'node:stream/promises';
 import { Inject, Injectable } from '@nestjs/common';
-import ipaddr from 'ipaddr.js';
 import chalk from 'chalk';
 import got, * as Got from 'got';
 import { parse } from 'content-disposition';
@@ -70,13 +69,6 @@ export class DownloadService {
 			},
 			enableUnixSockets: false,
 		}).on('response', (res: Got.Response) => {
-			if ((process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'test') && !this.config.proxy && res.ip) {
-				if (this.isPrivateIp(res.ip)) {
-					this.logger.warn(`Blocked address: ${res.ip}`);
-					req.destroy();
-				}
-			}
-
 			const contentLength = res.headers['content-length'];
 			if (contentLength != null) {
 				const size = Number(contentLength);
@@ -139,18 +131,4 @@ export class DownloadService {
 			cleanup();
 		}
 	}
-
-	@bindThis
-	private isPrivateIp(ip: string): boolean {
-		const parsedIp = ipaddr.parse(ip);
-
-		for (const net of this.config.allowedPrivateNetworks ?? []) {
-			const cidr = ipaddr.parseCIDR(net);
-			if (cidr[0].kind() === parsedIp.kind() && parsedIp.match(ipaddr.parseCIDR(net))) {
-				return false;
-			}
-		}
-
-		return parsedIp.range() !== 'unicast';
-	}
 }

packages/backend/src/core/EmailService.ts

@@ -312,6 +312,7 @@ export class EmailService {
 					Accept: 'application/json',
 					Authorization: truemailAuthKey,
 				},
+				isLocalAddressAllowed: true,
 			});
 
 			const json = (await res.json()) as {

packages/backend/src/core/HttpRequestService.ts

@@ -6,6 +6,7 @@
 import * as http from 'node:http';
 import * as https from 'node:https';
 import * as net from 'node:net';
+import ipaddr from 'ipaddr.js';
 import CacheableLookup from 'cacheable-lookup';
 import fetch from 'node-fetch';
 import { HttpProxyAgent, HttpsProxyAgent } from 'hpagent';
@@ -25,8 +26,102 @@ export type HttpRequestSendOptions = {
 	validators?: ((res: Response) => void)[];
 };
 
+declare module 'node:http' {
+	interface Agent {
+		createConnection(options: net.NetConnectOpts, callback?: (err: unknown, stream: net.Socket) => void): net.Socket;
+	}
+}
+
+class HttpRequestServiceAgent extends http.Agent {
+	constructor(
+		private config: Config,
+		options?: http.AgentOptions,
+	) {
+		super(options);
+	}
+
+	@bindThis
+	public createConnection(options: net.NetConnectOpts, callback?: (err: unknown, stream: net.Socket) => void): net.Socket {
+		const socket = super.createConnection(options, callback)
+			.on('connect', () => {
+				const address = socket.remoteAddress;
+				if (process.env.NODE_ENV === 'production') {
+					if (address && ipaddr.isValid(address)) {
+						if (this.isPrivateIp(address)) {
+							socket.destroy(new Error(`Blocked address: ${address}`));
+						}
+					}
+				}
+			});
+		return socket;
+	};
+
+	@bindThis
+	private isPrivateIp(ip: string): boolean {
+		const parsedIp = ipaddr.parse(ip);
+	
+		for (const net of this.config.allowedPrivateNetworks ?? []) {
+			const cidr = ipaddr.parseCIDR(net);
+			if (cidr[0].kind() === parsedIp.kind() && parsedIp.match(ipaddr.parseCIDR(net))) {
+				return false;
+			}
+		}
+	
+		return parsedIp.range() !== 'unicast';
+	}
+}
+
+class HttpsRequestServiceAgent extends https.Agent {
+	constructor(
+		private config: Config,
+		options?: https.AgentOptions,
+	) {
+		super(options);
+	}
+
+	@bindThis
+	public createConnection(options: net.NetConnectOpts, callback?: (err: unknown, stream: net.Socket) => void): net.Socket {
+		const socket = super.createConnection(options, callback)
+			.on('connect', () => {
+				const address = socket.remoteAddress;
+				if (process.env.NODE_ENV === 'production') {
+					if (address && ipaddr.isValid(address)) {
+						if (this.isPrivateIp(address)) {
+							socket.destroy(new Error(`Blocked address: ${address}`));
+						}
+					}
+				}
+			});
+		return socket;
+	};
+
+	@bindThis
+	private isPrivateIp(ip: string): boolean {
+		const parsedIp = ipaddr.parse(ip);
+	
+		for (const net of this.config.allowedPrivateNetworks ?? []) {
+			const cidr = ipaddr.parseCIDR(net);
+			if (cidr[0].kind() === parsedIp.kind() && parsedIp.match(ipaddr.parseCIDR(net))) {
+				return false;
+			}
+		}
+	
+		return parsedIp.range() !== 'unicast';
+	}
+}
+
 @Injectable()
 export class HttpRequestService {
+	/**
+	 * Get http non-proxy agent (without local address filtering)
+	 */
+	private httpNative: http.Agent;
+
+	/**
+	 * Get https non-proxy agent (without local address filtering)
+	 */
+	private httpsNative: https.Agent;
+
 	/**
 	 * Get http non-proxy agent
 	 */
@@ -57,19 +152,20 @@ export class HttpRequestService {
 			lookup: false,	// nativeのdns.lookupにfallbackしない
 		});
 
-		this.http = new http.Agent({
+		const agentOption = {
 			keepAlive: true,
 			keepAliveMsecs: 30 * 1000,
 			lookup: cache.lookup as unknown as net.LookupFunction,
 			localAddress: config.outgoingAddress,
-		});
+		};
 
-		this.https = new https.Agent({
+		this.httpNative = new http.Agent(agentOption);
-			keepAlive: true,
+
-			keepAliveMsecs: 30 * 1000,
+		this.httpsNative = new https.Agent(agentOption);
-			lookup: cache.lookup as unknown as net.LookupFunction,
+
-			localAddress: config.outgoingAddress,
+		this.http = new HttpRequestServiceAgent(config, agentOption);
-		});
+
+		this.https = new HttpsRequestServiceAgent(config, agentOption);
 
 		const maxSockets = Math.max(256, config.deliverJobConcurrency ?? 128);
 
@@ -104,16 +200,22 @@ export class HttpRequestService {
 	 * @param bypassProxy Allways bypass proxy
 	 */
 	@bindThis
-	public getAgentByUrl(url: URL, bypassProxy = false): http.Agent | https.Agent {
+	public getAgentByUrl(url: URL, bypassProxy = false, isLocalAddressAllowed = false): http.Agent | https.Agent {
 		if (bypassProxy || (this.config.proxyBypassHosts ?? []).includes(url.hostname)) {
+			if (isLocalAddressAllowed) {
+				return url.protocol === 'http:' ? this.httpNative : this.httpsNative;
+			}
 			return url.protocol === 'http:' ? this.http : this.https;
 		} else {
+			if (isLocalAddressAllowed && (!this.config.proxy)) {
+				return url.protocol === 'http:' ? this.httpNative : this.httpsNative;
+			}
 			return url.protocol === 'http:' ? this.httpAgent : this.httpsAgent;
 		}
 	}
 
 	@bindThis
-	public async getActivityJson(url: string): Promise<IObject> {
+	public async getActivityJson(url: string, isLocalAddressAllowed = false): Promise<IObject> {
 		const res = await this.send(url, {
 			method: 'GET',
 			headers: {
@@ -121,6 +223,7 @@ export class HttpRequestService {
 			},
 			timeout: 5000,
 			size: 1024 * 256,
+			isLocalAddressAllowed: isLocalAddressAllowed,
 		}, {
 			throwErrorWhenResponseNotOk: true,
 			validators: [validateContentTypeSetAsActivityPub],
@@ -129,13 +232,13 @@ export class HttpRequestService {
 		const finalUrl = res.url; // redirects may have been involved
 		const activity = await res.json() as IObject;
 
-		assertActivityMatchesUrls(activity, [url, finalUrl]);
+		assertActivityMatchesUrls(activity, [finalUrl]);
 
 		return activity;
 	}
 
 	@bindThis
-	public async getJson<T = unknown>(url: string, accept = 'application/json, */*', headers?: Record<string, string>): Promise<T> {
+	public async getJson<T = unknown>(url: string, accept = 'application/json, */*', headers?: Record<string, string>, isLocalAddressAllowed = false): Promise<T> {
 		const res = await this.send(url, {
 			method: 'GET',
 			headers: Object.assign({
@@ -143,19 +246,21 @@ export class HttpRequestService {
 			}, headers ?? {}),
 			timeout: 5000,
 			size: 1024 * 256,
+			isLocalAddressAllowed: isLocalAddressAllowed,
 		});
 
 		return await res.json() as T;
 	}
 
 	@bindThis
-	public async getHtml(url: string, accept = 'text/html, */*', headers?: Record<string, string>): Promise<string> {
+	public async getHtml(url: string, accept = 'text/html, */*', headers?: Record<string, string>, isLocalAddressAllowed = false): Promise<string> {
 		const res = await this.send(url, {
 			method: 'GET',
 			headers: Object.assign({
 				Accept: accept,
 			}, headers ?? {}),
 			timeout: 5000,
+			isLocalAddressAllowed: isLocalAddressAllowed,
 		});
 
 		return await res.text();
@@ -170,6 +275,7 @@ export class HttpRequestService {
 			headers?: Record<string, string>,
 			timeout?: number,
 			size?: number,
+			isLocalAddressAllowed?: boolean,
 		} = {},
 		extra: HttpRequestSendOptions = {
 			throwErrorWhenResponseNotOk: true,
@@ -183,6 +289,8 @@ export class HttpRequestService {
 			controller.abort();
 		}, timeout);
 
+		const isLocalAddressAllowed = args.isLocalAddressAllowed ?? false;
+
 		const res = await fetch(url, {
 			method: args.method ?? 'GET',
 			headers: {
@@ -191,7 +299,7 @@ export class HttpRequestService {
 			},
 			body: args.body,
 			size: args.size ?? 10 * 1024 * 1024,
-			agent: (url) => this.getAgentByUrl(url),
+			agent: (url) => this.getAgentByUrl(url, false, isLocalAddressAllowed),
 			signal: controller.signal,
 		});
 

packages/backend/src/core/RemoteUserResolveService.ts

@@ -54,9 +54,9 @@ export class RemoteUserResolveService {
 			}) as MiLocalUser;
 		}
 
-		host = this.utilityService.toPuny(host);
+		host = this.utilityService.punyHost(host);
 
-		if (this.config.host === host) {
+		if (host === this.utilityService.toPuny(this.config.host)) {
 			this.logger.info(`return local user: ${usernameLower}`);
 			return await this.usersRepository.findOneBy({ usernameLower, host: IsNull() }).then(u => {
 				if (u == null) {

packages/backend/src/core/UtilityService.ts

@@ -34,6 +34,11 @@ export class UtilityService {
 		return this.toPuny(this.config.host) === this.toPuny(host);
 	}
 
+	@bindThis
+	public isUriLocal(uri: string): boolean {
+		return this.punyHost(uri) === this.toPuny(this.config.host);
+	}
+
 	@bindThis
 	public isBlockedHost(blockedHosts: string[], host: string | null): boolean {
 		if (host == null) return false;

packages/backend/src/core/activitypub/ApDbResolverService.ts

@@ -10,6 +10,7 @@ import type { Config } from '@/config.js';
 import { MemoryKVCache } from '@/misc/cache.js';
 import type { MiUserPublickey } from '@/models/UserPublickey.js';
 import { CacheService } from '@/core/CacheService.js';
+import { UtilityService } from '@/core/UtilityService.js';
 import type { MiNote } from '@/models/Note.js';
 import { bindThis } from '@/decorators.js';
 import type { MiLocalUser, MiRemoteUser } from '@/models/User.js';
@@ -55,6 +56,7 @@ export class ApDbResolverService implements OnApplicationShutdown {
 		private cacheService: CacheService,
 		private apPersonService: ApPersonService,
 		private apLoggerService: ApLoggerService,
+		private utilityService: UtilityService,
 	) {
 		this.publicKeyCache = new MemoryKVCache<MiUserPublickey | null>(1000 * 60 * 60 * 12); // 12h
 		this.publicKeyByUserIdCache = new MemoryKVCache<MiUserPublickey | null>(1000 * 60 * 60 * 12); // 12h
@@ -65,7 +67,9 @@ export class ApDbResolverService implements OnApplicationShutdown {
 		const separator = '/';
 
 		const uri = new URL(getApId(value));
-		if (uri.origin !== this.config.url) return { local: false, uri: uri.href };
+		if (this.utilityService.toPuny(uri.host) !== this.utilityService.toPuny(this.config.host)) {
+			return { local: false, uri: uri.href };
+		}
 
 		const [, type, id, ...rest] = uri.pathname.split(separator);
 		return {

packages/backend/src/core/activitypub/ApInboxService.ts

@@ -93,15 +93,26 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	public async performActivity(actor: MiRemoteUser, activity: IObject): Promise<string | void> {
+	public async performActivity(actor: MiRemoteUser, activity: IObject, resolver?: Resolver): Promise<string | void> {
 		let result = undefined as string | void;
 		if (isCollectionOrOrderedCollection(activity)) {
 			const results = [] as [string, string | void][];
-			const resolver = this.apResolverService.createResolver();
+			// eslint-disable-next-line no-param-reassign
-			for (const item of toArray(isCollection(activity) ? activity.items : activity.orderedItems)) {
+			resolver ??= this.apResolverService.createResolver();
+
+			const items = toArray(isCollection(activity) ? activity.items : activity.orderedItems);
+			if (items.length >= resolver.getRecursionLimit()) {
+				throw new Error(`skipping activity: collection would surpass recursion limit: ${this.utilityService.extractDbHost(actor.uri)}`);
+			}
+
+			for (const item of items) {
 				const act = await resolver.resolve(item);
+				if (act.id == null || this.utilityService.extractDbHost(act.id) !== this.utilityService.extractDbHost(actor.uri)) {
+					this.logger.debug('skipping activity: activity id is null or mismatching');
+					continue;
+				}
 				try {
-					results.push([getApId(item), await this.performOneActivity(actor, act)]);
+					results.push([getApId(item), await this.performOneActivity(actor, act, resolver)]);
 				} catch (err) {
 					if (err instanceof Error || typeof err === 'string') {
 						this.logger.error(err);
@@ -116,7 +127,7 @@ export class ApInboxService {
 				result = results.map(([id, reason]) => `${id}: ${reason}`).join('\n');
 			}
 		} else {
-			result = await this.performOneActivity(actor, activity);
+			result = await this.performOneActivity(actor, activity, resolver);
 		}
 
 		// ついでにリモートユーザーの情報が古かったら更新しておく
@@ -131,37 +142,37 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	public async performOneActivity(actor: MiRemoteUser, activity: IObject): Promise<string | void> {
+	public async performOneActivity(actor: MiRemoteUser, activity: IObject, resolver?: Resolver): Promise<string | void> {
 		if (actor.isSuspended) return;
 
 		if (isCreate(activity)) {
-			return await this.create(actor, activity);
+			return await this.create(actor, activity, resolver);
 		} else if (isDelete(activity)) {
 			return await this.delete(actor, activity);
 		} else if (isUpdate(activity)) {
-			return await this.update(actor, activity);
+			return await this.update(actor, activity, resolver);
 		} else if (isFollow(activity)) {
 			return await this.follow(actor, activity);
 		} else if (isAccept(activity)) {
-			return await this.accept(actor, activity);
+			return await this.accept(actor, activity, resolver);
 		} else if (isReject(activity)) {
-			return await this.reject(actor, activity);
+			return await this.reject(actor, activity, resolver);
 		} else if (isAdd(activity)) {
-			return await this.add(actor, activity);
+			return await this.add(actor, activity, resolver);
 		} else if (isRemove(activity)) {
-			return await this.remove(actor, activity);
+			return await this.remove(actor, activity, resolver);
 		} else if (isAnnounce(activity)) {
-			return await this.announce(actor, activity);
+			return await this.announce(actor, activity, resolver);
 		} else if (isLike(activity)) {
 			return await this.like(actor, activity);
 		} else if (isUndo(activity)) {
-			return await this.undo(actor, activity);
+			return await this.undo(actor, activity, resolver);
 		} else if (isBlock(activity)) {
 			return await this.block(actor, activity);
 		} else if (isFlag(activity)) {
 			return await this.flag(actor, activity);
 		} else if (isMove(activity)) {
-			return await this.move(actor, activity);
+			return await this.move(actor, activity, resolver);
 		} else {
 			return `unrecognized activity type: ${activity.type}`;
 		}
@@ -203,12 +214,13 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async accept(actor: MiRemoteUser, activity: IAccept): Promise<string> {
+	private async accept(actor: MiRemoteUser, activity: IAccept, resolver?: Resolver): Promise<string> {
 		const uri = activity.id ?? activity;
 
 		this.logger.info(`Accept: ${uri}`);
 
-		const resolver = this.apResolverService.createResolver();
+		// eslint-disable-next-line no-param-reassign
+		resolver ??= this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(err => {
 			this.logger.error(`Resolution failed: ${err}`);
@@ -245,7 +257,7 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async add(actor: MiRemoteUser, activity: IAdd): Promise<string | void> {
+	private async add(actor: MiRemoteUser, activity: IAdd, resolver?: Resolver): Promise<string | void> {
 		if (actor.uri !== activity.actor) {
 			return 'invalid actor';
 		}
@@ -256,7 +268,7 @@ export class ApInboxService {
 
 		if (activity.target === actor.featured) {
 			const object = fromTuple(activity.object);
-			const note = await this.apNoteService.resolveNote(object);
+			const note = await this.apNoteService.resolveNote(object, { resolver });
 			if (note == null) return 'note not found';
 			await this.notePiningService.addPinned(actor, note.id);
 			return;
@@ -266,12 +278,13 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async announce(actor: MiRemoteUser, activity: IAnnounce): Promise<string | void> {
+	private async announce(actor: MiRemoteUser, activity: IAnnounce, resolver?: Resolver): Promise<string | void> {
 		const uri = getApId(activity);
 
 		this.logger.info(`Announce: ${uri}`);
 
-		const resolver = this.apResolverService.createResolver();
+		// eslint-disable-next-line no-param-reassign
+		resolver ??= this.apResolverService.createResolver();
 
 		const activityObject = fromTuple(activity.object);
 		if (!activityObject) return 'skip: activity has no object property';
@@ -289,7 +302,7 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async announceNote(actor: MiRemoteUser, activity: IAnnounce, target: IPost): Promise<string | void> {
+	private async announceNote(actor: MiRemoteUser, activity: IAnnounce, target: IPost, resolver?: Resolver): Promise<string | void> {
 		const uri = getApId(activity);
 
 		if (actor.isSuspended) {
@@ -311,7 +324,7 @@ export class ApInboxService {
 			// Announce対象をresolve
 			let renote;
 			try {
-				renote = await this.apNoteService.resolveNote(target);
+				renote = await this.apNoteService.resolveNote(target, { resolver });
 				if (renote == null) return 'announce target is null';
 			} catch (err) {
 				// 対象が4xxならスキップ
@@ -330,7 +343,7 @@ export class ApInboxService {
 
 			this.logger.info(`Creating the (Re)Note: ${uri}`);
 
-			const activityAudience = await this.apAudienceService.parseAudience(actor, activity.to, activity.cc);
+			const activityAudience = await this.apAudienceService.parseAudience(actor, activity.to, activity.cc, resolver);
 			const createdAt = activity.published ? new Date(activity.published) : null;
 
 			if (createdAt && createdAt < this.idService.parse(renote.id).date) {
@@ -368,7 +381,7 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async create(actor: MiRemoteUser, activity: ICreate): Promise<string | void> {
+	private async create(actor: MiRemoteUser, activity: ICreate, resolver?: Resolver): Promise<string | void> {
 		const uri = getApId(activity);
 
 		this.logger.info(`Create: ${uri}`);
@@ -394,7 +407,8 @@ export class ApInboxService {
 			activityObject.attributedTo = activity.actor;
 		}
 
-		const resolver = this.apResolverService.createResolver();
+		// eslint-disable-next-line no-param-reassign
+		resolver ??= this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activityObject).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -421,6 +435,8 @@ export class ApInboxService {
 				if (this.utilityService.extractDbHost(actor.uri) !== this.utilityService.extractDbHost(note.id)) {
 					return 'skip: host in actor.uri !== note.id';
 				}
+			} else {
+				return 'skip: note.id is not a string';
 			}
 		}
 
@@ -430,7 +446,7 @@ export class ApInboxService {
 			const exist = await this.apNoteService.fetchNote(note);
 			if (exist) return 'skip: note exists';
 
-			await this.apNoteService.createNote(note, resolver, silent);
+			await this.apNoteService.createNote(note, actor, resolver, silent);
 			return 'ok';
 		} catch (err) {
 			if (err instanceof StatusError && !err.isRetryable) {
@@ -568,12 +584,13 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async reject(actor: MiRemoteUser, activity: IReject): Promise<string> {
+	private async reject(actor: MiRemoteUser, activity: IReject, resolver?: Resolver): Promise<string> {
 		const uri = activity.id ?? activity;
 
 		this.logger.info(`Reject: ${uri}`);
 
-		const resolver = this.apResolverService.createResolver();
+		// eslint-disable-next-line no-param-reassign
+		resolver ??= this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -610,7 +627,7 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async remove(actor: MiRemoteUser, activity: IRemove): Promise<string | void> {
+	private async remove(actor: MiRemoteUser, activity: IRemove, resolver?: Resolver): Promise<string | void> {
 		if (actor.uri !== activity.actor) {
 			return 'invalid actor';
 		}
@@ -621,7 +638,7 @@ export class ApInboxService {
 
 		if (activity.target === actor.featured) {
 			const activityObject = fromTuple(activity.object);
-			const note = await this.apNoteService.resolveNote(activityObject);
+			const note = await this.apNoteService.resolveNote(activityObject, { resolver });
 			if (note == null) return 'note not found';
 			await this.notePiningService.removePinned(actor, note.id);
 			return;
@@ -631,7 +648,7 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async undo(actor: MiRemoteUser, activity: IUndo): Promise<string> {
+	private async undo(actor: MiRemoteUser, activity: IUndo, resolver?: Resolver): Promise<string> {
 		if (actor.uri !== activity.actor) {
 			return 'invalid actor';
 		}
@@ -640,7 +657,8 @@ export class ApInboxService {
 
 		this.logger.info(`Undo: ${uri}`);
 
-		const resolver = this.apResolverService.createResolver();
+		// eslint-disable-next-line no-param-reassign
+		resolver ??= this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -764,14 +782,15 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async update(actor: MiRemoteUser, activity: IUpdate): Promise<string> {
+	private async update(actor: MiRemoteUser, activity: IUpdate, resolver?: Resolver): Promise<string> {
 		if (actor.uri !== activity.actor) {
 			return 'skip: invalid actor';
 		}
 
 		this.logger.debug('Update');
 
-		const resolver = this.apResolverService.createResolver();
+		// eslint-disable-next-line no-param-reassign
+		resolver ??= this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -782,10 +801,10 @@ export class ApInboxService {
 			await this.apPersonService.updatePerson(actor.uri, resolver, object);
 			return 'ok: Person updated';
 		} else if (getApType(object) === 'Question') {
-			await this.apQuestionService.updateQuestion(object, resolver).catch(err => console.error(err));
+			await this.apQuestionService.updateQuestion(object, actor, resolver).catch(err => console.error(err));
 			return 'ok: Question updated';
 		} else if (getApType(object) === 'Note') {
-			await this.apNoteService.updateNote(object, resolver).catch(err => console.error(err));
+			await this.apNoteService.updateNote(object, actor, resolver).catch(err => console.error(err));
 			return 'ok: Note updated';
 		} else {
 			return `skip: Unknown type: ${getApType(object)}`;
@@ -793,11 +812,11 @@ export class ApInboxService {
 	}
 
 	@bindThis
-	private async move(actor: MiRemoteUser, activity: IMove): Promise<string> {
+	private async move(actor: MiRemoteUser, activity: IMove, resolver?: Resolver): Promise<string> {
 		// fetch the new and old accounts
 		const targetUri = getApHrefNullable(activity.target);
 		if (!targetUri) return 'skip: invalid activity target';
 
-		return await this.apPersonService.updatePerson(actor.uri) ?? 'skip: nothing to do';
+		return await this.apPersonService.updatePerson(actor.uri, resolver) ?? 'skip: nothing to do';
 	}
 }

packages/backend/src/core/activitypub/ApRequestService.ts

@@ -18,6 +18,7 @@ import type Logger from '@/logger.js';
 import type { IObject } from './type.js';
 import { validateContentTypeSetAsActivityPub } from '@/core/activitypub/misc/validator.js';
 import { assertActivityMatchesUrls } from '@/core/activitypub/misc/check-against-url.js';
+import { UtilityService } from "@/core/UtilityService.js";
 
 type Request = {
 	url: string;
@@ -147,6 +148,7 @@ export class ApRequestService {
 		private userKeypairService: UserKeypairService,
 		private httpRequestService: HttpRequestService,
 		private loggerService: LoggerService,
+		private utilityService: UtilityService,
 	) {
 		// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
 		this.logger = this.loggerService?.getLogger('ap-request'); // なぜか TypeError: Cannot read properties of undefined (reading 'getLogger') と言われる
@@ -241,7 +243,9 @@ export class ApRequestService {
 				if (alternate) {
 					const href = alternate.getAttribute('href');
 					if (href) {
-						return await this.signedGet(href, user, false);
+						if (this.utilityService.punyHost(url) === this.utilityService.punyHost(href)) {
+							return await this.signedGet(href, user, false);
+						}
 					}
 				}
 			} catch (e) {
@@ -257,7 +261,7 @@ export class ApRequestService {
 		const finalUrl = res.url; // redirects may have been involved
 		const activity = await res.json() as IObject;
 
-		assertActivityMatchesUrls(activity, [url, finalUrl]);
+		assertActivityMatchesUrls(activity, [finalUrl]);
 
 		return activity;
 	}

packages/backend/src/core/activitypub/ApResolverService.ts

@@ -42,7 +42,7 @@ export class Resolver {
 		private apRendererService: ApRendererService,
 		private apDbResolverService: ApDbResolverService,
 		private loggerService: LoggerService,
-		private recursionLimit = 100,
+		private recursionLimit = 256,
 	) {
 		this.history = new Set();
 		this.logger = this.loggerService.getLogger('ap-resolve');
@@ -53,6 +53,11 @@ export class Resolver {
 		return Array.from(this.history);
 	}
 
+	@bindThis
+	public getRecursionLimit(): number {
+		return this.recursionLimit;
+	}
+
 	@bindThis
 	public async resolveCollection(value: string | IObject): Promise<ICollection | IOrderedCollection> {
 		const collection = typeof value === 'string'
@@ -121,7 +126,11 @@ export class Resolver {
 		// `object.id` or `object.url` matches the URL used to fetch the
 		// object after redirects; here we double-check that no redirects
 		// bounced between hosts
-		if (object.id && (this.utilityService.punyHost(object.id) !== this.utilityService.punyHost(value))) {
+		if (object.id == null) {
+			throw new Error('invalid AP object: missing id');
+		}
+
+		if (this.utilityService.punyHost(object.id) !== this.utilityService.punyHost(value)) {
 			throw new Error(`invalid AP object ${value}: id ${object.id} has different host`);
 		}
 

packages/backend/src/core/activitypub/models/ApNoteService.ts

@@ -6,7 +6,7 @@
 import { forwardRef, Inject, Injectable } from '@nestjs/common';
 import { In } from 'typeorm';
 import { DI } from '@/di-symbols.js';
-import type { PollsRepository, EmojisRepository, NotesRepository, MiMeta } from '@/models/_.js';
+import type { UsersRepository, PollsRepository, EmojisRepository, NotesRepository, MiMeta } from '@/models/_.js';
 import type { Config } from '@/config.js';
 import type { MiRemoteUser } from '@/models/User.js';
 import type { MiNote } from '@/models/Note.js';
@@ -49,6 +49,9 @@ export class ApNoteService {
 		@Inject(DI.meta)
 		private meta: MiMeta,
 
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
 		@Inject(DI.pollsRepository)
 		private pollsRepository: PollsRepository,
 
@@ -82,7 +85,13 @@ export class ApNoteService {
 	}
 
 	@bindThis
-	public validateNote(object: IObject, uri: string): Error | null {
+	public validateNote(
+		object: IObject,
+		uri: string,
+		actor?: MiRemoteUser,
+		user?: MiRemoteUser,
+		note?: MiNote,
+	): Error | null {
 		const expectHost = this.utilityService.extractDbHost(uri);
 		const apType = getApType(object);
 
@@ -99,10 +108,27 @@ export class ApNoteService {
 			return new IdentifiableError('d450b8a9-48e4-4dab-ae36-f4db763fda7c', `invalid Note: attributedTo has different host. expected: ${expectHost}, actual: ${actualHost}`);
 		}
 
+		if (actor) {
+			const attribution = (object.attributedTo) ? getOneApId(object.attributedTo) : actor.uri;
+			if (attribution !== actor.uri) {
+				return new IdentifiableError('d450b8a9-48e4-4dab-ae36-f4db763fda7c', `invalid Note: attribution does not match the actor that send it. attribution: ${attribution}, actor: ${actor.uri}`);
+			}
+			if (user && attribution !== user.uri) {
+				return new IdentifiableError('d450b8a9-48e4-4dab-ae36-f4db763fda7c', `invalid Note: updated attribution does not match original attribution. updated attribution: ${user.uri}, original attribution: ${attribution}`);
+			}
+		}
+
 		if (object.published && !this.idService.isSafeT(new Date(object.published).valueOf())) {
 			return new IdentifiableError('d450b8a9-48e4-4dab-ae36-f4db763fda7c', 'invalid Note: published timestamp is malformed');
 		}
 
+		if (note) {
+			const url = (object.url) ? getOneApId(object.url) : note.url;
+			if (url && url !== note.url) {
+				return new IdentifiableError('d450b8a9-48e4-4dab-ae36-f4db763fda7c', `invalid Note: updated url does not match original url. updated url: ${url}, original url: ${note.url}`);
+			}
+		}
+
 		return null;
 	}
 
@@ -120,14 +146,14 @@ export class ApNoteService {
 	 * Noteを作成します。
 	 */
 	@bindThis
-	public async createNote(value: string | IObject, resolver?: Resolver, silent = false): Promise<MiNote | null> {
+	public async createNote(value: string | IObject, actor?: MiRemoteUser, resolver?: Resolver, silent = false): Promise<MiNote | null> {
 		// eslint-disable-next-line no-param-reassign
 		if (resolver == null) resolver = this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(value);
 
 		const entryUri = getApId(value);
-		const err = this.validateNote(object, entryUri);
+		const err = this.validateNote(object, entryUri, actor);
 		if (err) {
 			this.logger.error(err.message, {
 				resolver: { history: resolver.getHistory() },
@@ -141,14 +167,24 @@ export class ApNoteService {
 
 		this.logger.debug(`Note fetched: ${JSON.stringify(note, null, 2)}`);
 
-		if (note.id && !checkHttps(note.id)) {
+		if (note.id == null) {
+			throw new Error('Refusing to create note without id');
+		}
+
+		if (!checkHttps(note.id)) {
 			throw new Error('unexpected schema of note.id: ' + note.id);
 		}
 
 		const url = getOneApHrefNullable(note.url);
 
-		if (url && !checkHttps(url)) {
+		if (url != null) {
-			throw new Error('unexpected schema of note url: ' + url);
+			if (!checkHttps(url)) {
+				throw new Error('unexpected schema of note url: ' + url);
+			}
+
+			if (this.utilityService.punyHost(url) !== this.utilityService.punyHost(note.id)) {
+				throw new Error(`note url <> uri host mismatch: ${url} <> ${note.id}`);
+			}
 		}
 
 		this.logger.info(`Creating the Note: ${note.id}`);
@@ -161,8 +197,9 @@ export class ApNoteService {
 		const uri = getOneApId(note.attributedTo);
 
 		// ローカルで投稿者を検索し、もし凍結されていたらスキップ
-		const cachedActor = await this.apPersonService.fetchPerson(uri) as MiRemoteUser;
+		// eslint-disable-next-line no-param-reassign
-		if (cachedActor && cachedActor.isSuspended) {
+		actor ??= await this.apPersonService.fetchPerson(uri) as MiRemoteUser | undefined;
+		if (actor && actor.isSuspended) {
 			throw new IdentifiableError('85ab9bd7-3a41-4530-959d-f07073900109', 'actor has been suspended');
 		}
 
@@ -194,7 +231,8 @@ export class ApNoteService {
 		}
 		//#endregion
 
-		const actor = cachedActor ?? await this.apPersonService.resolvePerson(uri, resolver) as MiRemoteUser;
+		// eslint-disable-next-line no-param-reassign
+		actor ??= await this.apPersonService.resolvePerson(uri, resolver) as MiRemoteUser;
 
 		// 解決した投稿者が凍結されていたらスキップ
 		if (actor.isSuspended) {
@@ -335,7 +373,7 @@ export class ApNoteService {
 	 * Noteを作成します。
 	 */
 	@bindThis
-	public async updateNote(value: string | IObject, resolver?: Resolver, silent = false): Promise<MiNote | null> {
+	public async updateNote(value: string | IObject, actor?: MiRemoteUser, resolver?: Resolver, silent = false): Promise<MiNote | null> {
 		const noteUri = typeof value === 'string' ? value : value.id;
 		if (noteUri == null) throw new Error('uri is null');
 
@@ -346,6 +384,9 @@ export class ApNoteService {
 		const UpdatedNote = await this.notesRepository.findOneBy({ uri: noteUri });
 		if (UpdatedNote == null) throw new Error('Note is not registered');
 
+		const user = await this.usersRepository.findOneBy({ id: UpdatedNote.userId }) as MiRemoteUser | null;
+		if (user == null) throw new Error('Note is not registered');
+
 		// eslint-disable-next-line no-param-reassign
 		if (resolver == null) resolver = this.apResolverService.createResolver();
 
@@ -362,11 +403,19 @@ export class ApNoteService {
 			throw err;
 		}
 
+		// `validateNote` checks that the actor and user are one and the same
+		// eslint-disable-next-line no-param-reassign
+		actor ??= user;
+
 		const note = object as IPost;
 
 		this.logger.debug(`Note fetched: ${JSON.stringify(note, null, 2)}`);
 
-		if (note.id && !checkHttps(note.id)) {
+		if (note.id == null) {
+			throw new Error('Refusing to update note without id');
+		}
+
+		if (!checkHttps(note.id)) {
 			throw new Error('unexpected schema of note.id: ' + note.id);
 		}
 
@@ -376,18 +425,19 @@ export class ApNoteService {
 			throw new Error('unexpected schema of note url: ' + url);
 		}
 
-		this.logger.info(`Creating the Note: ${note.id}`);
+		if (url != null) {
+			if (!checkHttps(url)) {
+				throw new Error('unexpected schema of note url: ' + url);
+			}
 
-		// 投稿者をフェッチ
+			if (this.utilityService.punyHost(url) !== this.utilityService.punyHost(note.id)) {
-		if (note.attributedTo == null) {
+				throw new Error(`note url <> id host mismatch: ${url} <> ${note.id}`);
-			throw new Error('invalid note.attributedTo: ' + note.attributedTo);
+			}
 		}
 
-		const uri = getOneApId(note.attributedTo);
+		this.logger.info(`Creating the Note: ${note.id}`);
 
-		// ローカルで投稿者を検索し、もし凍結されていたらスキップ
+		if (actor.isSuspended) {
-		const cachedActor = await this.apPersonService.fetchPerson(uri) as MiRemoteUser;
-		if (cachedActor && cachedActor.isSuspended) {
 			throw new IdentifiableError('85ab9bd7-3a41-4530-959d-f07073900109', 'actor has been suspended');
 		}
 
@@ -419,13 +469,6 @@ export class ApNoteService {
 		}
 		//#endregion
 
-		const actor = cachedActor ?? await this.apPersonService.resolvePerson(uri, resolver) as MiRemoteUser;
-
-		// 投稿者が凍結されていたらスキップ
-		if (actor.isSuspended) {
-			throw new IdentifiableError('85ab9bd7-3a41-4530-959d-f07073900109', 'actor has been suspended');
-		}
-
 		const noteAudience = await this.apAudienceService.parseAudience(actor, note.to, note.cc, resolver);
 		let visibility = noteAudience.visibility;
 		const visibleUsers = noteAudience.visibleUsers;
@@ -578,7 +621,7 @@ export class ApNoteService {
 			if (exist) return exist;
 			//#endregion
 
-			if (uri.startsWith(this.config.url)) {
+			if (this.utilityService.isUriLocal(uri)) {
 				throw new StatusError('cannot resolve local note', 400, 'cannot resolve local note');
 			}
 
@@ -586,7 +629,7 @@ export class ApNoteService {
 			// ここでuriの代わりに添付されてきたNote Objectが指定されていると、サーバーフェッチを経ずにノートが生成されるが
 			// 添付されてきたNote Objectは偽装されている可能性があるため、常にuriを指定してサーバーフェッチを行う。
 			const createFrom = options.sentFrom?.origin === new URL(uri).origin ? value : uri;
-			return await this.createNote(createFrom, options.resolver, true);
+			return await this.createNote(createFrom, undefined, options.resolver, true);
 		} finally {
 			unlock();
 		}

packages/backend/src/core/activitypub/models/ApPersonService.ts

@@ -154,12 +154,22 @@ export class ApPersonService implements OnModuleInit {
 			throw new Error('invalid Actor: inbox has different host');
 		}
 
+		const sharedInboxObject = x.sharedInbox ?? (x.endpoints ? x.endpoints.sharedInbox : undefined);
+		if (sharedInboxObject != null) {
+			const sharedInbox = getApId(sharedInboxObject);
+			if (!(typeof sharedInbox === 'string' && sharedInbox.length > 0 && this.utilityService.punyHost(sharedInbox) === expectHost)) {
+				throw new Error('invalid Actor: wrong shared inbox');
+			}
+		}
+
 		for (const collection of ['outbox', 'followers', 'following'] as (keyof IActor)[]) {
-			const collectionUri = (x as IActor)[collection];
+			const collectionUri = getApId((x as IActor)[collection]);
 			if (typeof collectionUri === 'string' && collectionUri.length > 0) {
 				if (this.utilityService.punyHost(collectionUri) !== expectHost) {
 					throw new Error(`invalid Actor: ${collection} has different host`);
 				}
+			} else if (collectionUri != null) {
+				throw new Error(`invalid Actor: wrong ${collection}`);
 			}
 		}
 
@@ -286,7 +296,8 @@ export class ApPersonService implements OnModuleInit {
 	public async createPerson(uri: string, resolver?: Resolver): Promise<MiRemoteUser> {
 		if (typeof uri !== 'string') throw new Error('uri is not string');
 
-		if (uri.startsWith(this.config.url)) {
+		const host = this.utilityService.punyHost(uri);
+		if (host === this.utilityService.toPuny(this.config.host)) {
 			throw new StatusError('cannot resolve local user', 400, 'cannot resolve local user');
 		}
 
@@ -300,8 +311,6 @@ export class ApPersonService implements OnModuleInit {
 
 		this.logger.info(`Creating the Person: ${person.id}`);
 
-		const host = this.utilityService.punyHost(object.id);
-
 		const fields = this.analyzeAttachments(person.attachment ?? []);
 
 		const tags = extractApHashtags(person.tag).map(normalizeForSearch).splice(0, 32);
@@ -327,8 +336,18 @@ export class ApPersonService implements OnModuleInit {
 
 		const url = getOneApHrefNullable(person.url);
 
-		if (url && !checkHttps(url)) {
+		if (person.id == null) {
-			throw new Error('unexpected schema of person url: ' + url);
+			throw new Error('Refusing to create person without id');
+		}
+
+		if (url != null) {
+			if (!checkHttps(url)) {
+				throw new Error('unexpected schema of person url: ' + url);
+			}
+
+			if (this.utilityService.punyHost(url) !== this.utilityService.punyHost(person.id)) {
+				throw new Error(`person url <> uri host mismatch: ${url} <> ${person.id}`);
+			}
 		}
 
 		// Create user
@@ -480,7 +499,7 @@ export class ApPersonService implements OnModuleInit {
 		if (typeof uri !== 'string') throw new Error('uri is not string');
 
 		// URIがこのサーバーを指しているならスキップ
-		if (uri.startsWith(`${this.config.url}/`)) return;
+		if (this.utilityService.isUriLocal(uri)) return;
 
 		//#region このサーバーに既に登録されているか
 		const exist = await this.fetchPerson(uri) as MiRemoteUser | null;
@@ -529,8 +548,18 @@ export class ApPersonService implements OnModuleInit {
 
 		const url = getOneApHrefNullable(person.url);
 
-		if (url && !checkHttps(url)) {
+		if (person.id == null) {
-			throw new Error('unexpected schema of person url: ' + url);
+			throw new Error('Refusing to update person without id');
+		}
+
+		if (url != null) {
+			if (!checkHttps(url)) {
+				throw new Error('unexpected schema of person url: ' + url);
+			}
+
+			if (this.utilityService.punyHost(url) !== this.utilityService.punyHost(person.id)) {
+				throw new Error(`person url <> uri host mismatch: ${url} <> ${person.id}`);
+			}
 		}
 
 		const updates = {
@@ -747,7 +776,7 @@ export class ApPersonService implements OnModuleInit {
 			await this.updatePerson(src.movedToUri, undefined, undefined, [...movePreventUris, src.uri]);
 			dst = await this.fetchPerson(src.movedToUri) ?? dst;
 		} else {
-			if (src.movedToUri.startsWith(`${this.config.url}/`)) {
+			if (this.utilityService.isUriLocal(src.movedToUri)) {
 				// ローカルユーザーっぽいのにfetchPersonで見つからないということはmovedToUriが間違っている
 				return 'failed: movedTo is local but not found';
 			}

packages/backend/src/core/activitypub/models/ApQuestionService.ts

@@ -5,16 +5,18 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import { DI } from '@/di-symbols.js';
-import type { NotesRepository, PollsRepository } from '@/models/_.js';
+import type { UsersRepository, NotesRepository, PollsRepository } from '@/models/_.js';
 import type { Config } from '@/config.js';
 import type { IPoll } from '@/models/Poll.js';
+import type { MiRemoteUser } from '@/models/User.js';
 import type Logger from '@/logger.js';
 import { bindThis } from '@/decorators.js';
-import { isQuestion } from '../type.js';
+import { UtilityService } from '@/core/UtilityService.js';
+import { getOneApId, isQuestion } from '../type.js';
 import { ApLoggerService } from '../ApLoggerService.js';
 import { ApResolverService } from '../ApResolverService.js';
 import type { Resolver } from '../ApResolverService.js';
-import type { IObject, IQuestion } from '../type.js';
+import type { IObject } from '../type.js';
 
 @Injectable()
 export class ApQuestionService {
@@ -24,6 +26,9 @@ export class ApQuestionService {
 		@Inject(DI.config)
 		private config: Config,
 
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
 		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
 
@@ -32,6 +37,7 @@ export class ApQuestionService {
 
 		private apResolverService: ApResolverService,
 		private apLoggerService: ApLoggerService,
+		private utilityService: UtilityService,
 	) {
 		this.logger = this.apLoggerService.logger;
 	}
@@ -65,12 +71,12 @@ export class ApQuestionService {
 	 * @returns true if updated
 	 */
 	@bindThis
-	public async updateQuestion(value: string | IObject, resolver?: Resolver): Promise<boolean> {
+	public async updateQuestion(value: string | IObject, actor?: MiRemoteUser, resolver?: Resolver): Promise<boolean> {
 		const uri = typeof value === 'string' ? value : value.id;
 		if (uri == null) throw new Error('uri is null');
 
 		// URIがこのサーバーを指しているならスキップ
-		if (uri.startsWith(this.config.url + '/')) throw new Error('uri points local');
+		if (this.utilityService.isUriLocal(uri)) throw new Error('uri points local');
 
 		//#region このサーバーに既に登録されているか
 		const note = await this.notesRepository.findOneBy({ uri });
@@ -78,15 +84,26 @@ export class ApQuestionService {
 
 		const poll = await this.pollsRepository.findOneBy({ noteId: note.id });
 		if (poll == null) throw new Error('Question is not registered');
+
+		const user = await this.usersRepository.findOneBy({ id: poll.userId });
+		if (user == null) throw new Error('Question is not registered');
 		//#endregion
 
 		// resolve new Question object
 		// eslint-disable-next-line no-param-reassign
 		if (resolver == null) resolver = this.apResolverService.createResolver();
-		const question = await resolver.resolve(value) as IQuestion;
+		const question = await resolver.resolve(value);
 		this.logger.debug(`fetched question: ${JSON.stringify(question, null, 2)}`);
 
-		if (question.type !== 'Question') throw new Error('object is not a Question');
+		if (!isQuestion(question)) throw new Error('object is not a Question');
+
+		const attribution = (question.attributedTo) ? getOneApId(question.attributedTo) : user.uri;
+		const attributionMatchesExisting = attribution === user.uri;
+		const actorMatchesAttribution = (actor) ? attribution === actor.uri : true;
+
+		if (!attributionMatchesExisting || !actorMatchesAttribution) {
+			throw new Error('Refusing to ingest update for poll by different user');
+		}
 
 		const apChoices = question.oneOf ?? question.anyOf;
 		if (apChoices == null) throw new Error('invalid apChoices: ' + apChoices);
@@ -96,7 +113,7 @@ export class ApQuestionService {
 		for (const choice of poll.choices) {
 			const oldCount = poll.votes[poll.choices.indexOf(choice)];
 			const newCount = apChoices.filter(ap => ap.name === choice).at(0)?.replies?.totalItems;
-			if (newCount == null) throw new Error('invalid newCount: ' + newCount);
+			if (newCount == null || !(Number.isInteger(newCount) && newCount >= 0)) throw new Error('invalid newCount: ' + newCount);
 
 			if (oldCount <= newCount) {
 				changed = true;

packages/backend/src/core/entities/NoteEntityService.ts

@@ -17,6 +17,7 @@ import { DebounceLoader } from '@/misc/loader.js';
 import { IdService } from '@/core/IdService.js';
 import { ReactionsBufferingService } from '@/core/ReactionsBufferingService.js';
 import type { OnModuleInit } from '@nestjs/common';
+import type { CacheService } from '../CacheService.js';
 import type { CustomEmojiService } from '../CustomEmojiService.js';
 import type { ReactionService } from '../ReactionService.js';
 import type { UserEntityService } from './UserEntityService.js';
@@ -27,6 +28,7 @@ import type { Config } from '@/config.js';
 export class NoteEntityService implements OnModuleInit {
 	private userEntityService: UserEntityService;
 	private driveFileEntityService: DriveFileEntityService;
+	private cacheService: CacheService;
 	private customEmojiService: CustomEmojiService;
 	private reactionService: ReactionService;
 	private reactionsBufferingService: ReactionsBufferingService;
@@ -75,6 +77,7 @@ export class NoteEntityService implements OnModuleInit {
 	onModuleInit() {
 		this.userEntityService = this.moduleRef.get('UserEntityService');
 		this.driveFileEntityService = this.moduleRef.get('DriveFileEntityService');
+		this.cacheService = this.moduleRef.get('CacheService');
 		this.customEmojiService = this.moduleRef.get('CustomEmojiService');
 		this.reactionService = this.moduleRef.get('ReactionService');
 		this.reactionsBufferingService = this.moduleRef.get('ReactionsBufferingService');
@@ -142,6 +145,12 @@ export class NoteEntityService implements OnModuleInit {
 			}
 		}
 
+		if (!hide && meId && packedNote.userId !== meId) {
+			const isBlocked = (await this.cacheService.userBlockedCache.fetch(meId)).has(packedNote.userId);
+
+			if (isBlocked) hide = true;
+		}
+
 		if (hide) {
 			packedNote.visibleUserIds = undefined;
 			packedNote.fileIds = [];
@@ -149,6 +158,12 @@ export class NoteEntityService implements OnModuleInit {
 			packedNote.text = null;
 			packedNote.poll = undefined;
 			packedNote.cw = null;
+			packedNote.repliesCount = 0;
+			packedNote.reactionAcceptance = null;
+			packedNote.reactionAndUserPairCache = undefined;
+			packedNote.reactionCount = 0;
+			packedNote.reactionEmojis = undefined;
+			packedNote.reactions = undefined;
 			packedNote.isHidden = true;
 		}
 	}
@@ -262,7 +277,8 @@ export class NoteEntityService implements OnModuleInit {
 				return true;
 			} else {
 				// フォロワーかどうか
-				const [following, user] = await Promise.all([
+				const [blocked, following, user] = await Promise.all([
+					this.cacheService.userBlockingCache.fetch(meId).then((ids) => ids.has(note.userId)),
 					this.followingsRepository.count({
 						where: {
 							followeeId: note.userId,
@@ -273,6 +289,8 @@ export class NoteEntityService implements OnModuleInit {
 					this.usersRepository.findOneByOrFail({ id: meId }),
 				]);
 
+				if (blocked) return false;
+
 				/* If we know the following, everyhting is fine.
 
 				But if we do not know the following, it might be that both the
@@ -284,6 +302,12 @@ export class NoteEntityService implements OnModuleInit {
 			}
 		}
 
+		if (meId != null) {
+			const isBlocked = (await this.cacheService.userBlockedCache.fetch(meId)).has(note.userId);
+
+			if (isBlocked) return false;
+		}
+
 		return true;
 	}
 

packages/backend/src/queue/processors/InboxProcessorService.ts

@@ -193,6 +193,9 @@ export class InboxProcessorService implements OnApplicationShutdown {
 				throw new Bull.UnrecoverableError(`skip: signerHost(${signerHost}) !== activity.id host(${activityIdHost}`);
 			}
 		}
+		else {
+			throw new Bull.UnrecoverableError('skip: activity id is not a string');
+		}
 
 		// Update stats
 		this.federatedInstanceService.fetch(authUser.user.host).then(i => {

packages/backend/src/server/ActivityPubServerService.ts

@@ -152,7 +152,7 @@ export class ActivityPubServerService {
 		let signature;
 
 		try {
-			signature = httpSignature.parseRequest(request.raw, { 'headers': [] });
+			signature = httpSignature.parseRequest(request.raw, { 'headers': ['(request-target)', 'host', 'date'], authorizationHeaderName: 'signature' });
 		} catch (e) {
 			// not signed, or malformed signature: refuse
 			this.authlogger.warn(`${request.id} ${request.url} not signed, or malformed signature: refuse`);
@@ -229,7 +229,7 @@ export class ActivityPubServerService {
 		let signature;
 
 		try {
-			signature = httpSignature.parseRequest(request.raw, { 'headers': [] });
+			signature = httpSignature.parseRequest(request.raw, { 'headers': ['(request-target)', 'digest', 'host', 'date'], authorizationHeaderName: 'signature' });
 		} catch (e) {
 			reply.code(401);
 			return;

packages/backend/src/server/api/endpoints/ap/get.ts

@@ -11,6 +11,7 @@ import { ApResolverService } from '@/core/activitypub/ApResolverService.js';
 export const meta = {
 	tags: ['federation'],
 
+	requireAdmin: true,
 	requireCredential: true,
 	kind: 'read:federation',
 

packages/backend/src/server/api/endpoints/ap/show.ts

@@ -140,7 +140,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		return await this.mergePack(
 			me,
 			isActor(object) ? await this.apPersonService.createPerson(getApId(object)) : null,
-			isPost(object) ? await this.apNoteService.createNote(getApId(object), undefined, true) : null,
+			isPost(object) ? await this.apNoteService.createNote(getApId(object), undefined, undefined, true) : null,
 		);
 	}
 

packages/backend/src/server/web/UrlPreviewService.ts

@@ -170,6 +170,6 @@ export class UrlPreviewService {
 			contentLengthRequired: meta.urlPreviewRequireContentLength,
 		});
 
-		return this.httpRequestService.getJson<SummalyResult>(`${proxy}?${queryStr}`);
+		return this.httpRequestService.getJson<SummalyResult>(`${proxy}?${queryStr}`, 'application/json, */*', undefined, true);
 	}
 }