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import { Inject, Injectable } from '@nestjs/common';
import { FastifyInstance, FastifyPluginOptions, FastifyReply, FastifyRequest } from 'fastify';
import { IsNull, MoreThan } from 'typeorm';
import vary from 'vary';
import { DI } from '@/di-symbols.js';
import type { UsersRepository } from '@/models/index.js';
import type { Config } from '@/config.js';
import { escapeAttribute, escapeValue } from '@/misc/prelude/xml.js';
import type { User } from '@/models/entities/User.js';
import * as Acct from '@/misc/acct.js';
import { NodeinfoServerService } from './NodeinfoServerService.js';
import type { FindOptionsWhere } from 'typeorm';
@Injectable()
export class WellKnownServerService {
constructor(
@Inject(DI.config)
private config: Config,
@Inject(DI.usersRepository)
private usersRepository: UsersRepository,
private nodeinfoServerService: NodeinfoServerService,
) {
this.createServer = this.createServer.bind(this);
}
public createServer(fastify: FastifyInstance, options: FastifyPluginOptions, done: (err?: Error) => void) {
const XRD = (...x: { element: string, value?: string, attributes?: Record<string, string> }[]) =>
`<?xml version="1.0" encoding="UTF-8"?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">${x.map(({ element, value, attributes }) =>
`<${
Object.entries(typeof attributes === 'object' && attributes || {}).reduce((a, [k, v]) => `${a} ${k}="${escapeAttribute(v)}"`, element)
}${
typeof value === 'string' ? `>${escapeValue(value)}</${element}` : '/'
}>`).reduce((a, c) => a + c, '')}</XRD>`;
const allPath = '/.well-known/*';
const webFingerPath = '/.well-known/webfinger';
const jrd = 'application/jrd+json';
const xrd = 'application/xrd+xml';
fastify.addHook('onRequest', (request, reply, done) => {
reply.header('Access-Control-Allow-Headers', 'Accept');
reply.header('Access-Control-Allow-Methods', 'GET, OPTIONS');
reply.header('Access-Control-Allow-Origin', '*');
reply.header('Access-Control-Expose-Headers', 'Vary');
done();
});
fastify.options(allPath, async (request, reply) => {
reply.code(204);
});
fastify.get('/.well-known/host-meta', async (request, reply) => {
reply.header('Content-Type', xrd);
return XRD({ element: 'Link', attributes: {
rel: 'lrdd',
type: xrd,
template: `${this.config.url}${webFingerPath}?resource={uri}`,
} });
});
fastify.get('/.well-known/host-meta.json', async (request, reply) => {
reply.header('Content-Type', jrd);
return {
links: [{
rel: 'lrdd',
type: jrd,
template: `${this.config.url}${webFingerPath}?resource={uri}`,
}],
};
});
fastify.get('/.well-known/nodeinfo', async (request, reply) => {
return { links: this.nodeinfoServerService.getLinks() };
});
/* TODO
fastify.get('/.well-known/change-password', async (request, reply) => {
});
*/
fastify.get<{ Querystring: { resource: string } }>(webFingerPath, async (request, reply) => {
const fromId = (id: User['id']): FindOptionsWhere<User> => ({
id,
host: IsNull(),
isSuspended: false,
});
const generateQuery = (resource: string): FindOptionsWhere<User> | number =>
resource.startsWith(`${this.config.url.toLowerCase()}/users/`) ?
fromId(resource.split('/').pop()!) :
fromAcct(Acct.parse(
resource.startsWith(`${this.config.url.toLowerCase()}/@`) ? resource.split('/').pop()! :
resource.startsWith('acct:') ? resource.slice('acct:'.length) :
resource));
const fromAcct = (acct: Acct.Acct): FindOptionsWhere<User> | number =>
!acct.host || acct.host === this.config.host.toLowerCase() ? {
usernameLower: acct.username,
host: IsNull(),
isSuspended: false,
} : 422;
if (typeof request.query.resource !== 'string') {
reply.code(400);
return;
}
const query = generateQuery(request.query.resource.toLowerCase());
if (typeof query === 'number') {
reply.code(query);
return;
}
const user = await this.usersRepository.findOneBy(query);
if (user == null) {
reply.code(404);
return;
}
const subject = `acct:${user.username}@${this.config.host}`;
const self = {
rel: 'self',
type: 'application/activity+json',
href: `${this.config.url}/users/${user.id}`,
};
const profilePage = {
rel: 'http://webfinger.net/rel/profile-page',
type: 'text/html',
href: `${this.config.url}/@${user.username}`,
};
const subscribe = {
rel: 'http://ostatus.org/schema/1.0/subscribe',
template: `${this.config.url}/authorize-follow?acct={uri}`,
};
vary(reply.raw, 'Accept');
reply.header('Cache-Control', 'public, max-age=180');
if (request.accepts().type([jrd, xrd]) === xrd) {
reply.type(xrd);
return XRD(
{ element: 'Subject', value: subject },
{ element: 'Link', attributes: self },
{ element: 'Link', attributes: profilePage },
{ element: 'Link', attributes: subscribe });
} else {
reply.type(jrd);
return {
subject,
links: [self, profilePage, subscribe],
};
}
});
done();
}
}
|
