hippofish/packages/backend/src/server/api/endpoints/ap/show.ts
2022-12-07 00:56:03 +01:00

147 lines
3.7 KiB
TypeScript

import define from '../../define.js';
import config from '@/config/index.js';
import { createPerson } from '@/remote/activitypub/models/person.js';
import { createNote } from '@/remote/activitypub/models/note.js';
import DbResolver from '@/remote/activitypub/db-resolver.js';
import Resolver from '@/remote/activitypub/resolver.js';
import { ApiError } from '../../error.js';
import { extractDbHost } from '@/misc/convert-host.js';
import { Users, Notes } from '@/models/index.js';
import { Note } from '@/models/entities/note.js';
import { CacheableLocalUser, User } from '@/models/entities/user.js';
import { fetchMeta } from '@/misc/fetch-meta.js';
import { isActor, isPost, getApId } from '@/remote/activitypub/type.js';
import { SchemaType } from '@/misc/schema.js';
import { HOUR } from '@/const.js';
export const meta = {
tags: ['federation'],
requireCredential: true,
limit: {
duration: HOUR,
max: 30,
},
errors: {
noSuchObject: {
message: 'No such object.',
code: 'NO_SUCH_OBJECT',
id: 'dc94d745-1262-4e63-a17d-fecaa57efc82',
},
},
res: {
optional: false, nullable: false,
oneOf: [
{
type: 'object',
properties: {
type: {
type: 'string',
optional: false, nullable: false,
enum: ['User'],
},
object: {
type: 'object',
optional: false, nullable: false,
ref: 'UserDetailedNotMe',
}
}
},
{
type: 'object',
properties: {
type: {
type: 'string',
optional: false, nullable: false,
enum: ['Note'],
},
object: {
type: 'object',
optional: false, nullable: false,
ref: 'Note',
}
}
}
],
},
} as const;
export const paramDef = {
type: 'object',
properties: {
uri: { type: 'string' },
},
required: ['uri'],
} as const;
// eslint-disable-next-line import/no-default-export
export default define(meta, paramDef, async (ps, me) => {
const object = await fetchAny(ps.uri, me);
if (object) {
return object;
} else {
throw new ApiError(meta.errors.noSuchObject);
}
});
/***
* Resolve User or Note from URI
*/
async function fetchAny(uri: string, me: CacheableLocalUser | null | undefined): Promise<SchemaType<typeof meta['res']> | null> {
// ブロックしてたら中断
const fetchedMeta = await fetchMeta();
if (fetchedMeta.blockedHosts.includes(extractDbHost(uri))) return null;
const dbResolver = new DbResolver();
let local = await mergePack(me, ...await Promise.all([
dbResolver.getUserFromApId(uri),
dbResolver.getNoteFromApId(uri),
]));
if (local != null) return local;
// リモートから一旦オブジェクトフェッチ
const resolver = new Resolver();
const object = await resolver.resolve(uri) as any;
// /@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
// これはDBに存在する可能性があるため再度DB検索
if (uri !== object.id) {
local = await mergePack(me, ...await Promise.all([
dbResolver.getUserFromApId(object.id),
dbResolver.getNoteFromApId(object.id),
]));
if (local != null) return local;
}
return await mergePack(
me,
isActor(object) ? await createPerson(getApId(object)) : null,
isPost(object) ? await createNote(getApId(object), undefined, true) : null,
);
}
async function mergePack(me: CacheableLocalUser | null | undefined, user: User | null | undefined, note: Note | null | undefined): Promise<SchemaType<typeof meta.res> | null> {
if (user != null) {
return {
type: 'User',
object: await Users.pack(user, me, { detail: true }),
};
} else if (note != null) {
try {
const object = await Notes.pack(note, me, { detail: true });
return {
type: 'Note',
object,
};
} catch (e) {
return null;
}
}
return null;
}