126 lines
3.7 KiB
TypeScript
126 lines
3.7 KiB
TypeScript
import { Inject, Injectable } from '@nestjs/common';
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import { IsNull } from 'typeorm';
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import type { LocalUser, User } from '@/models/entities/User.js';
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import type { RelaysRepository, UsersRepository } from '@/models/index.js';
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import { IdService } from '@/core/IdService.js';
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import { Cache } from '@/misc/cache.js';
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import type { Relay } from '@/models/entities/Relay.js';
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import { QueueService } from '@/core/QueueService.js';
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import { CreateSystemUserService } from '@/core/CreateSystemUserService.js';
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import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
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import { DI } from '@/di-symbols.js';
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import { deepClone } from '@/misc/clone.js';
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import { bindThis } from '@/decorators.js';
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const ACTOR_USERNAME = 'relay.actor' as const;
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@Injectable()
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export class RelayService {
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private relaysCache: Cache<Relay[]>;
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constructor(
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@Inject(DI.usersRepository)
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private usersRepository: UsersRepository,
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@Inject(DI.relaysRepository)
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private relaysRepository: RelaysRepository,
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private idService: IdService,
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private queueService: QueueService,
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private createSystemUserService: CreateSystemUserService,
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private apRendererService: ApRendererService,
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) {
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this.relaysCache = new Cache<Relay[]>(1000 * 60 * 10);
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}
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@bindThis
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private async getRelayActor(): Promise<LocalUser> {
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const user = await this.usersRepository.findOneBy({
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host: IsNull(),
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username: ACTOR_USERNAME,
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});
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if (user) return user as LocalUser;
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const created = await this.createSystemUserService.createSystemUser(ACTOR_USERNAME);
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return created as LocalUser;
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}
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@bindThis
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public async addRelay(inbox: string): Promise<Relay> {
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const relay = await this.relaysRepository.insert({
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id: this.idService.genId(),
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inbox,
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status: 'requesting',
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}).then(x => this.relaysRepository.findOneByOrFail(x.identifiers[0]));
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const relayActor = await this.getRelayActor();
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const follow = await this.apRendererService.renderFollowRelay(relay, relayActor);
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const activity = this.apRendererService.addContext(follow);
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this.queueService.deliver(relayActor, activity, relay.inbox);
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return relay;
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}
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@bindThis
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public async removeRelay(inbox: string): Promise<void> {
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const relay = await this.relaysRepository.findOneBy({
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inbox,
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});
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if (relay == null) {
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throw new Error('relay not found');
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}
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const relayActor = await this.getRelayActor();
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const follow = this.apRendererService.renderFollowRelay(relay, relayActor);
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const undo = this.apRendererService.renderUndo(follow, relayActor);
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const activity = this.apRendererService.addContext(undo);
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this.queueService.deliver(relayActor, activity, relay.inbox);
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await this.relaysRepository.delete(relay.id);
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}
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@bindThis
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public async listRelay(): Promise<Relay[]> {
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const relays = await this.relaysRepository.find();
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return relays;
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}
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@bindThis
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public async relayAccepted(id: string): Promise<string> {
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const result = await this.relaysRepository.update(id, {
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status: 'accepted',
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});
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return JSON.stringify(result);
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}
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@bindThis
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public async relayRejected(id: string): Promise<string> {
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const result = await this.relaysRepository.update(id, {
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status: 'rejected',
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});
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return JSON.stringify(result);
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}
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@bindThis
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public async deliverToRelays(user: { id: User['id']; host: null; }, activity: any): Promise<void> {
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if (activity == null) return;
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const relays = await this.relaysCache.fetch(null, () => this.relaysRepository.findBy({
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status: 'accepted',
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}));
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if (relays.length === 0) return;
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const copy = deepClone(activity);
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if (!copy.to) copy.to = ['https://www.w3.org/ns/activitystreams#Public'];
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const signed = await this.apRendererService.attachLdSignature(copy, user);
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for (const relay of relays) {
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this.queueService.deliver(user, signed, relay.inbox);
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}
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}
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}
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