import { IncomingMessage } from 'node:http'; import { Inject, Injectable } from '@nestjs/common'; import fastifyAccepts from '@fastify/accepts'; import httpSignature from '@peertube/http-signature'; import { Brackets, In, IsNull, LessThan, Not } from 'typeorm'; import accepts from 'accepts'; import vary from 'vary'; import { DI } from '@/di-symbols.js'; import type { FollowingsRepository, NotesRepository, EmojisRepository, NoteReactionsRepository, UserProfilesRepository, UserNotePiningsRepository, UsersRepository } from '@/models/index.js'; import * as url from '@/misc/prelude/url.js'; import type { Config } from '@/config.js'; import { ApRendererService } from '@/core/activitypub/ApRendererService.js'; import { QueueService } from '@/core/QueueService.js'; import type { ILocalUser, User } from '@/models/entities/User.js'; import { UserKeypairStoreService } from '@/core/UserKeypairStoreService.js'; import type { Following } from '@/models/entities/Following.js'; import { countIf } from '@/misc/prelude/array.js'; import type { Note } from '@/models/entities/Note.js'; import { QueryService } from '@/core/QueryService.js'; import { UtilityService } from '@/core/UtilityService.js'; import { UserEntityService } from '@/core/entities/UserEntityService.js'; import { bindThis } from '@/decorators.js'; import { IActivity } from '@/core/activitypub/type.js'; import type { FastifyInstance, FastifyRequest, FastifyReply, FastifyPluginOptions } from 'fastify'; import type { FindOptionsWhere } from 'typeorm'; const ACTIVITY_JSON = 'application/activity+json; charset=utf-8'; const LD_JSON = 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"; charset=utf-8'; @Injectable() export class ActivityPubServerService { constructor( @Inject(DI.config) private config: Config, @Inject(DI.usersRepository) private usersRepository: UsersRepository, @Inject(DI.userProfilesRepository) private userProfilesRepository: UserProfilesRepository, @Inject(DI.notesRepository) private notesRepository: NotesRepository, @Inject(DI.noteReactionsRepository) private noteReactionsRepository: NoteReactionsRepository, @Inject(DI.emojisRepository) private emojisRepository: EmojisRepository, @Inject(DI.userNotePiningsRepository) private userNotePiningsRepository: UserNotePiningsRepository, @Inject(DI.followingsRepository) private followingsRepository: FollowingsRepository, private utilityService: UtilityService, private userEntityService: UserEntityService, private apRendererService: ApRendererService, private queueService: QueueService, private userKeypairStoreService: UserKeypairStoreService, private queryService: QueryService, ) { //this.createServer = this.createServer.bind(this); } @bindThis private setResponseType(request: FastifyRequest, reply: FastifyReply): void { const accept = request.accepts().type([ACTIVITY_JSON, LD_JSON]); if (accept === LD_JSON) { reply.type(LD_JSON); } else { reply.type(ACTIVITY_JSON); } } /** * Pack Create or Announce Activity * @param note Note */ @bindThis private async packActivity(note: Note): Promise { if (note.renoteId && note.text == null && !note.hasPoll && (note.fileIds == null || note.fileIds.length === 0)) { const renote = await this.notesRepository.findOneByOrFail({ id: note.renoteId }); return this.apRendererService.renderAnnounce(renote.uri ? renote.uri : `${this.config.url}/notes/${renote.id}`, note); } return this.apRendererService.renderCreate(await this.apRendererService.renderNote(note, false), note); } @bindThis private inbox(request: FastifyRequest, reply: FastifyReply) { let signature; try { signature = httpSignature.parseRequest(request.raw, { 'headers': [] }); } catch (e) { reply.code(401); return; } // TODO: request.bodyのバリデーション? this.queueService.inbox(request.body as IActivity, signature); reply.code(202); } @bindThis private async followers( request: FastifyRequest<{ Params: { user: string; }; Querystring: { cursor?: string; page?: string; }; }>, reply: FastifyReply, ) { const userId = request.params.user; const cursor = request.query.cursor; if (cursor != null && typeof cursor !== 'string') { reply.code(400); return; } const page = request.query.page === 'true'; const user = await this.usersRepository.findOneBy({ id: userId, host: IsNull(), }); if (user == null) { reply.code(404); return; } //#region Check ff visibility const profile = await this.userProfilesRepository.findOneByOrFail({ userId: user.id }); if (profile.ffVisibility === 'private') { reply.code(403); reply.header('Cache-Control', 'public, max-age=30'); return; } else if (profile.ffVisibility === 'followers') { reply.code(403); reply.header('Cache-Control', 'public, max-age=30'); return; } //#endregion const limit = 10; const partOf = `${this.config.url}/users/${userId}/followers`; if (page) { const query = { followeeId: user.id, } as FindOptionsWhere; // カーソルが指定されている場合 if (cursor) { query.id = LessThan(cursor); } // Get followers const followings = await this.followingsRepository.find({ where: query, take: limit + 1, order: { id: -1 }, }); // 「次のページ」があるかどうか const inStock = followings.length === limit + 1; if (inStock) followings.pop(); const renderedFollowers = await Promise.all(followings.map(following => this.apRendererService.renderFollowUser(following.followerId))); const rendered = this.apRendererService.renderOrderedCollectionPage( `${partOf}?${url.query({ page: 'true', cursor, })}`, user.followersCount, renderedFollowers, partOf, undefined, inStock ? `${partOf}?${url.query({ page: 'true', cursor: followings[followings.length - 1].id, })}` : undefined, ); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } else { // index page const rendered = this.apRendererService.renderOrderedCollection(partOf, user.followersCount, `${partOf}?page=true`); reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } } @bindThis private async following( request: FastifyRequest<{ Params: { user: string; }; Querystring: { cursor?: string; page?: string; }; }>, reply: FastifyReply, ) { const userId = request.params.user; const cursor = request.query.cursor; if (cursor != null && typeof cursor !== 'string') { reply.code(400); return; } const page = request.query.page === 'true'; const user = await this.usersRepository.findOneBy({ id: userId, host: IsNull(), }); if (user == null) { reply.code(404); return; } //#region Check ff visibility const profile = await this.userProfilesRepository.findOneByOrFail({ userId: user.id }); if (profile.ffVisibility === 'private') { reply.code(403); reply.header('Cache-Control', 'public, max-age=30'); return; } else if (profile.ffVisibility === 'followers') { reply.code(403); reply.header('Cache-Control', 'public, max-age=30'); return; } //#endregion const limit = 10; const partOf = `${this.config.url}/users/${userId}/following`; if (page) { const query = { followerId: user.id, } as FindOptionsWhere; // カーソルが指定されている場合 if (cursor) { query.id = LessThan(cursor); } // Get followings const followings = await this.followingsRepository.find({ where: query, take: limit + 1, order: { id: -1 }, }); // 「次のページ」があるかどうか const inStock = followings.length === limit + 1; if (inStock) followings.pop(); const renderedFollowees = await Promise.all(followings.map(following => this.apRendererService.renderFollowUser(following.followeeId))); const rendered = this.apRendererService.renderOrderedCollectionPage( `${partOf}?${url.query({ page: 'true', cursor, })}`, user.followingCount, renderedFollowees, partOf, undefined, inStock ? `${partOf}?${url.query({ page: 'true', cursor: followings[followings.length - 1].id, })}` : undefined, ); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } else { // index page const rendered = this.apRendererService.renderOrderedCollection(partOf, user.followingCount, `${partOf}?page=true`); reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } } @bindThis private async featured(request: FastifyRequest<{ Params: { user: string; }; }>, reply: FastifyReply) { const userId = request.params.user; const user = await this.usersRepository.findOneBy({ id: userId, host: IsNull(), }); if (user == null) { reply.code(404); return; } const pinings = await this.userNotePiningsRepository.find({ where: { userId: user.id }, order: { id: 'DESC' }, }); const pinnedNotes = await Promise.all(pinings.map(pining => this.notesRepository.findOneByOrFail({ id: pining.noteId }))); const renderedNotes = await Promise.all(pinnedNotes.map(note => this.apRendererService.renderNote(note))); const rendered = this.apRendererService.renderOrderedCollection( `${this.config.url}/users/${userId}/collections/featured`, renderedNotes.length, undefined, undefined, renderedNotes, ); reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } @bindThis private async outbox( request: FastifyRequest<{ Params: { user: string; }; Querystring: { since_id?: string; until_id?: string; page?: string; }; }>, reply: FastifyReply, ) { const userId = request.params.user; const sinceId = request.query.since_id; if (sinceId != null && typeof sinceId !== 'string') { reply.code(400); return; } const untilId = request.query.until_id; if (untilId != null && typeof untilId !== 'string') { reply.code(400); return; } const page = request.query.page === 'true'; if (countIf(x => x != null, [sinceId, untilId]) > 1) { reply.code(400); return; } const user = await this.usersRepository.findOneBy({ id: userId, host: IsNull(), }); if (user == null) { reply.code(404); return; } const limit = 20; const partOf = `${this.config.url}/users/${userId}/outbox`; if (page) { const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), sinceId, untilId) .andWhere('note.userId = :userId', { userId: user.id }) .andWhere(new Brackets(qb => { qb .where('note.visibility = \'public\'') .orWhere('note.visibility = \'home\''); })) .andWhere('note.localOnly = FALSE'); const notes = await query.take(limit).getMany(); if (sinceId) notes.reverse(); const activities = await Promise.all(notes.map(note => this.packActivity(note))); const rendered = this.apRendererService.renderOrderedCollectionPage( `${partOf}?${url.query({ page: 'true', since_id: sinceId, until_id: untilId, })}`, user.notesCount, activities, partOf, notes.length ? `${partOf}?${url.query({ page: 'true', since_id: notes[0].id, })}` : undefined, notes.length ? `${partOf}?${url.query({ page: 'true', until_id: notes[notes.length - 1].id, })}` : undefined, ); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } else { // index page const rendered = this.apRendererService.renderOrderedCollection(partOf, user.notesCount, `${partOf}?page=true`, `${partOf}?page=true&since_id=000000000000000000000000`, ); reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(rendered)); } } @bindThis private async userInfo(request: FastifyRequest, reply: FastifyReply, user: User | null) { if (user == null) { reply.code(404); return; } reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(await this.apRendererService.renderPerson(user as ILocalUser))); } @bindThis public createServer(fastify: FastifyInstance, options: FastifyPluginOptions, done: (err?: Error) => void) { // addConstraintStrategy の型定義がおかしいため (fastify.addConstraintStrategy as any)({ name: 'apOrHtml', storage() { const store = {} as any; return { get(key: string) { return store[key] ?? null; }, set(key: string, value: any) { store[key] = value; }, }; }, deriveConstraint(request: IncomingMessage) { const accepted = accepts(request).type(['html', ACTIVITY_JSON, LD_JSON]); const isAp = typeof accepted === 'string' && !accepted.match(/html/); return isAp ? 'ap' : 'html'; }, }); fastify.register(fastifyAccepts); fastify.addContentTypeParser('application/activity+json', { parseAs: 'string' }, fastify.getDefaultJsonParser('ignore', 'ignore')); fastify.addContentTypeParser('application/ld+json', { parseAs: 'string' }, fastify.getDefaultJsonParser('ignore', 'ignore')); fastify.addHook('onRequest', (request, reply, done) => { reply.header('Access-Control-Allow-Headers', 'Accept'); reply.header('Access-Control-Allow-Methods', 'GET, OPTIONS'); reply.header('Access-Control-Allow-Origin', '*'); reply.header('Access-Control-Expose-Headers', 'Vary'); done(); }); //#region Routing // inbox (limit: 64kb) fastify.post('/inbox', { bodyLimit: 1024 * 64 }, async (request, reply) => await this.inbox(request, reply)); fastify.post('/users/:user/inbox', { bodyLimit: 1024 * 64 }, async (request, reply) => await this.inbox(request, reply)); // note fastify.get<{ Params: { note: string; } }>('/notes/:note', { constraints: { apOrHtml: 'ap' } }, async (request, reply) => { vary(reply.raw, 'Accept'); const note = await this.notesRepository.findOneBy({ id: request.params.note, visibility: In(['public', 'home']), localOnly: false, }); if (note == null) { reply.code(404); return; } // リモートだったらリダイレクト if (note.userHost != null) { if (note.uri == null || this.utilityService.isSelfHost(note.userHost)) { reply.code(500); return; } reply.redirect(note.uri); return; } reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return this.apRendererService.addContext(await this.apRendererService.renderNote(note, false)); }); // note activity fastify.get<{ Params: { note: string; } }>('/notes/:note/activity', async (request, reply) => { vary(reply.raw, 'Accept'); const note = await this.notesRepository.findOneBy({ id: request.params.note, userHost: IsNull(), visibility: In(['public', 'home']), localOnly: false, }); if (note == null) { reply.code(404); return; } reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(await this.packActivity(note))); }); // outbox fastify.get<{ Params: { user: string; }; Querystring: { since_id?: string; until_id?: string; page?: string; }; }>('/users/:user/outbox', async (request, reply) => await this.outbox(request, reply)); // followers fastify.get<{ Params: { user: string; }; Querystring: { cursor?: string; page?: string; }; }>('/users/:user/followers', async (request, reply) => await this.followers(request, reply)); // following fastify.get<{ Params: { user: string; }; Querystring: { cursor?: string; page?: string; }; }>('/users/:user/following', async (request, reply) => await this.following(request, reply)); // featured fastify.get<{ Params: { user: string; }; }>('/users/:user/collections/featured', async (request, reply) => await this.featured(request, reply)); // publickey fastify.get<{ Params: { user: string; } }>('/users/:user/publickey', async (request, reply) => { const userId = request.params.user; const user = await this.usersRepository.findOneBy({ id: userId, host: IsNull(), }); if (user == null) { reply.code(404); return; } const keypair = await this.userKeypairStoreService.getUserKeypair(user.id); if (this.userEntityService.isLocalUser(user)) { reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(this.apRendererService.renderKey(user, keypair))); } else { reply.code(400); return; } }); fastify.get<{ Params: { user: string; } }>('/users/:user', { constraints: { apOrHtml: 'ap' } }, async (request, reply) => { const userId = request.params.user; const user = await this.usersRepository.findOneBy({ id: userId, host: IsNull(), isSuspended: false, }); return await this.userInfo(request, reply, user); }); fastify.get<{ Params: { user: string; } }>('/@:user', { constraints: { apOrHtml: 'ap' } }, async (request, reply) => { const user = await this.usersRepository.findOneBy({ usernameLower: request.params.user.toLowerCase(), host: IsNull(), isSuspended: false, }); return await this.userInfo(request, reply, user); }); //#endregion // emoji fastify.get<{ Params: { emoji: string; } }>('/emojis/:emoji', async (request, reply) => { const emoji = await this.emojisRepository.findOneBy({ host: IsNull(), name: request.params.emoji, }); if (emoji == null) { reply.code(404); return; } reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(await this.apRendererService.renderEmoji(emoji))); }); // like fastify.get<{ Params: { like: string; } }>('/likes/:like', async (request, reply) => { const reaction = await this.noteReactionsRepository.findOneBy({ id: request.params.like }); if (reaction == null) { reply.code(404); return; } const note = await this.notesRepository.findOneBy({ id: reaction.noteId }); if (note == null) { reply.code(404); return; } reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(await this.apRendererService.renderLike(reaction, note))); }); // follow fastify.get<{ Params: { follower: string; followee: string; } }>('/follows/:follower/:followee', async (request, reply) => { // This may be used before the follow is completed, so we do not // check if the following exists. const [follower, followee] = await Promise.all([ this.usersRepository.findOneBy({ id: request.params.follower, host: IsNull(), }), this.usersRepository.findOneBy({ id: request.params.followee, host: Not(IsNull()), }), ]); if (follower == null || followee == null) { reply.code(404); return; } reply.header('Cache-Control', 'public, max-age=180'); this.setResponseType(request, reply); return (this.apRendererService.addContext(this.apRendererService.renderFollow(follower, followee))); }); done(); } }