134 lines
3.4 KiB
TypeScript
134 lines
3.4 KiB
TypeScript
import $ from 'cafy';
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import define from '../../define';
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import config from '../../../../config';
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import * as mongo from 'mongodb';
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import User, { pack as packUser, IUser } from '../../../../models/user';
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import { createPerson } from '../../../../remote/activitypub/models/person';
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import Note, { pack as packNote, INote } from '../../../../models/note';
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import { createNote } from '../../../../remote/activitypub/models/note';
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import Resolver from '../../../../remote/activitypub/resolver';
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import { ApiError } from '../../error';
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import Instance from '../../../../models/instance';
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import { extractDbHost } from '../../../../misc/convert-host';
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export const meta = {
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tags: ['federation'],
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desc: {
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'ja-JP': 'URIを指定してActivityPubオブジェクトを参照します。'
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},
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requireCredential: false,
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params: {
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uri: {
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validator: $.str,
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desc: {
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'ja-JP': 'ActivityPubオブジェクトのURI'
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}
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},
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},
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errors: {
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noSuchObject: {
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message: 'No such object.',
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code: 'NO_SUCH_OBJECT',
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id: 'dc94d745-1262-4e63-a17d-fecaa57efc82'
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}
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}
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};
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export default define(meta, async (ps) => {
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const object = await fetchAny(ps.uri);
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if (object) {
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return object;
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} else {
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throw new ApiError(meta.errors.noSuchObject);
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}
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});
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/***
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* URIからUserかNoteを解決する
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*/
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async function fetchAny(uri: string) {
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// URIがこのサーバーを指しているなら、ローカルユーザーIDとしてDBからフェッチ
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if (uri.startsWith(config.url + '/')) {
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const id = new mongo.ObjectID(uri.split('/').pop());
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const [user, note] = await Promise.all([
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User.findOne({ _id: id }),
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Note.findOne({ _id: id })
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]);
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const packed = await mergePack(user, note);
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if (packed !== null) return packed;
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}
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// ブロックしてたら中断
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const instance = await Instance.findOne({ host: extractDbHost(uri) });
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if (instance && instance.isBlocked) return null;
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// URI(AP Object id)としてDB検索
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{
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const [user, note] = await Promise.all([
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User.findOne({ uri: uri }),
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Note.findOne({ uri: uri })
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]);
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const packed = await mergePack(user, note);
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if (packed !== null) return packed;
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}
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// リモートから一旦オブジェクトフェッチ
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const resolver = new Resolver();
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const object = await resolver.resolve(uri) as any;
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// /@user のような正規id以外で取得できるURIが指定されていた場合、ここで初めて正規URIが確定する
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// これはDBに存在する可能性があるため再度DB検索
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if (uri !== object.id) {
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const [user, note] = await Promise.all([
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User.findOne({ uri: object.id }),
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Note.findOne({ uri: object.id })
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]);
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const packed = await mergePack(user, note);
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if (packed !== null) return packed;
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}
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// それでもみつからなければ新規であるため登録
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if (object.type === 'Person') {
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const user = await createPerson(object.id);
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return {
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type: 'User',
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object: await packUser(user, null, { detail: true })
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};
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}
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if (['Note', 'Question', 'Article'].includes(object.type)) {
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const note = await createNote(object.id);
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return {
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type: 'Note',
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object: await packNote(note, null, { detail: true })
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};
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}
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return null;
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}
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async function mergePack(user: IUser, note: INote) {
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if (user !== null) {
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return {
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type: 'User',
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object: await packUser(user, null, { detail: true })
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};
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}
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if (note !== null) {
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return {
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type: 'Note',
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object: await packNote(note, null, { detail: true })
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};
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}
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return null;
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}
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