2022-09-17 18:27:08 +00:00
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import { Inject, Injectable } from '@nestjs/common';
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import escapeRegexp from 'escape-regexp';
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import { DI } from '@/di-symbols.js';
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2023-02-15 04:06:06 +00:00
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import type { NotesRepository, UserPublickeysRepository, UsersRepository } from '@/models/index.js';
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2022-09-20 20:33:11 +00:00
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import type { Config } from '@/config.js';
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2022-09-17 18:27:08 +00:00
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import { Cache } from '@/misc/cache.js';
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import type { UserPublickey } from '@/models/entities/UserPublickey.js';
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import { UserCacheService } from '@/core/UserCacheService.js';
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import type { Note } from '@/models/entities/Note.js';
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2022-12-04 06:03:09 +00:00
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import { bindThis } from '@/decorators.js';
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2023-02-13 06:50:22 +00:00
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import { RemoteUser, User } from '@/models/entities/User.js';
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2022-09-17 18:27:08 +00:00
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import { getApId } from './type.js';
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import { ApPersonService } from './models/ApPersonService.js';
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import type { IObject } from './type.js';
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export type UriParseResult = {
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/** wether the URI was generated by us */
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local: true;
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/** id in DB */
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id: string;
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/** hint of type, e.g. "notes", "users" */
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type: string;
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/** any remaining text after type and id, not including the slash after id. undefined if empty */
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rest?: string;
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} | {
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/** wether the URI was generated by us */
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local: false;
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/** uri in DB */
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uri: string;
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};
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@Injectable()
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export class ApDbResolverService {
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2022-09-18 18:11:50 +00:00
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private publicKeyCache: Cache<UserPublickey | null>;
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private publicKeyByUserIdCache: Cache<UserPublickey | null>;
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2022-09-17 18:27:08 +00:00
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constructor(
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@Inject(DI.config)
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private config: Config,
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@Inject(DI.usersRepository)
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private usersRepository: UsersRepository,
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@Inject(DI.notesRepository)
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private notesRepository: NotesRepository,
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@Inject(DI.userPublickeysRepository)
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private userPublickeysRepository: UserPublickeysRepository,
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private userCacheService: UserCacheService,
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private apPersonService: ApPersonService,
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) {
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2022-09-18 18:11:50 +00:00
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this.publicKeyCache = new Cache<UserPublickey | null>(Infinity);
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this.publicKeyByUserIdCache = new Cache<UserPublickey | null>(Infinity);
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2022-09-17 18:27:08 +00:00
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}
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@bindThis
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public parseUri(value: string | IObject): UriParseResult {
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const uri = getApId(value);
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// the host part of a URL is case insensitive, so use the 'i' flag.
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const localRegex = new RegExp('^' + escapeRegexp(this.config.url) + '/(\\w+)/(\\w+)(?:\/(.+))?', 'i');
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const matchLocal = uri.match(localRegex);
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if (matchLocal) {
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return {
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local: true,
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type: matchLocal[1],
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id: matchLocal[2],
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rest: matchLocal[3],
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};
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} else {
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return {
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local: false,
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uri,
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};
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}
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}
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/**
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* AP Note => Misskey Note in DB
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*/
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@bindThis
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public async getNoteFromApId(value: string | IObject): Promise<Note | null> {
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const parsed = this.parseUri(value);
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if (parsed.local) {
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if (parsed.type !== 'notes') return null;
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return await this.notesRepository.findOneBy({
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id: parsed.id,
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});
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} else {
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return await this.notesRepository.findOneBy({
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uri: parsed.uri,
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});
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}
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}
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/**
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* AP Person => Misskey User in DB
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*/
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@bindThis
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public async getUserFromApId(value: string | IObject): Promise<User | null> {
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const parsed = this.parseUri(value);
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if (parsed.local) {
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if (parsed.type !== 'users') return null;
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return await this.userCacheService.userByIdCache.fetchMaybe(parsed.id, () => this.usersRepository.findOneBy({
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id: parsed.id,
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}).then(x => x ?? undefined)) ?? null;
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} else {
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return await this.userCacheService.uriPersonCache.fetch(parsed.uri, () => this.usersRepository.findOneBy({
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uri: parsed.uri,
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}));
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}
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}
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/**
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* AP KeyId => Misskey User and Key
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*/
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@bindThis
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public async getAuthUserFromKeyId(keyId: string): Promise<{
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user: RemoteUser;
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key: UserPublickey;
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} | null> {
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const key = await this.publicKeyCache.fetch(keyId, async () => {
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const key = await this.userPublickeysRepository.findOneBy({
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keyId,
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});
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if (key == null) return null;
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return key;
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}, key => key != null);
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if (key == null) return null;
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return {
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user: await this.userCacheService.findById(key.userId) as RemoteUser,
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key,
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};
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}
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/**
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* AP Actor id => Misskey User and Key
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*/
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@bindThis
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public async getAuthUserFromApId(uri: string): Promise<{
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user: RemoteUser;
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key: UserPublickey | null;
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} | null> {
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const user = await this.apPersonService.resolvePerson(uri) as RemoteUser;
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if (user == null) return null;
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2022-09-18 18:11:50 +00:00
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const key = await this.publicKeyByUserIdCache.fetch(user.id, () => this.userPublickeysRepository.findOneBy({ userId: user.id }), v => v != null);
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return {
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user,
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key,
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};
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}
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}
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