312 lines
9.4 KiB
TypeScript
312 lines
9.4 KiB
TypeScript
import { URL } from 'node:url';
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import { Inject, Injectable } from '@nestjs/common';
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import { JSDOM } from 'jsdom';
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import tinycolor from 'tinycolor2';
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import type { Instance } from '@/models/entities/Instance.js';
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import type Logger from '@/logger.js';
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import { DI } from '@/di-symbols.js';
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import { LoggerService } from '@/core/LoggerService.js';
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import { HttpRequestService } from '@/core/HttpRequestService.js';
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import { bindThis } from '@/decorators.js';
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import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
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import type { DOMWindow } from 'jsdom';
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import * as Redis from 'ioredis';
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type NodeInfo = {
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openRegistrations?: unknown;
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software?: {
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name?: unknown;
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version?: unknown;
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};
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metadata?: {
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name?: unknown;
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nodeName?: unknown;
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nodeDescription?: unknown;
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description?: unknown;
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maintainer?: {
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name?: unknown;
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email?: unknown;
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};
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themeColor?: unknown;
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};
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};
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@Injectable()
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export class FetchInstanceMetadataService {
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private logger: Logger;
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constructor(
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private httpRequestService: HttpRequestService,
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private loggerService: LoggerService,
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private federatedInstanceService: FederatedInstanceService,
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@Inject(DI.redis)
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private redisClient: Redis.Redis,
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) {
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this.logger = this.loggerService.getLogger('metadata', 'cyan');
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}
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@bindThis
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public async tryLock(host: string): Promise<boolean> {
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const mutex = await this.redisClient.set(`fetchInstanceMetadata:mutex:${host}`, '1', 'GET');
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return mutex !== '1';
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}
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@bindThis
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public unlock(host: string): Promise<'OK'> {
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return this.redisClient.set(`fetchInstanceMetadata:mutex:${host}`, '0');
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}
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@bindThis
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public async fetchInstanceMetadata(instance: Instance, force = false): Promise<void> {
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try {
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const host = instance.host;
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// Acquire mutex to ensure no parallel runs
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if (!await this.tryLock(host)) return;
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try {
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if (!force) {
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const _instance = await this.federatedInstanceService.fetch(host);
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const now = Date.now();
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if (_instance && _instance.infoUpdatedAt && (now - _instance.infoUpdatedAt.getTime() < 1000 * 60 * 60 * 24)) {
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// unlock at the finally caluse
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return;
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}
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}
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this.logger.info(`Fetching metadata of ${instance.host} ...`);
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const [info, dom, manifest] = await Promise.all([
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this.fetchNodeinfo(instance).catch(() => null),
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this.fetchDom(instance).catch(() => null),
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this.fetchManifest(instance).catch(() => null),
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]);
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const [favicon, icon, themeColor, name, description] = await Promise.all([
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this.fetchFaviconUrl(instance, dom).catch(() => null),
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this.fetchIconUrl(instance, dom, manifest).catch(() => null),
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this.getThemeColor(info, dom, manifest).catch(() => null),
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this.getSiteName(info, dom, manifest).catch(() => null),
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this.getDescription(info, dom, manifest).catch(() => null),
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]);
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this.logger.succ(`Successfuly fetched metadata of ${instance.host}`);
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const updates = {
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infoUpdatedAt: new Date(),
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} as Record<string, any>;
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if (info) {
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updates.softwareName = typeof info.software?.name === 'string' ? info.software.name.toLowerCase() : '?';
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updates.softwareVersion = info.software?.version;
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updates.openRegistrations = info.openRegistrations;
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updates.maintainerName = info.metadata ? info.metadata.maintainer ? (info.metadata.maintainer.name ?? null) : null : null;
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updates.maintainerEmail = info.metadata ? info.metadata.maintainer ? (info.metadata.maintainer.email ?? null) : null : null;
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}
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if (name) updates.name = name;
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if (description) updates.description = description;
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if (icon || favicon) updates.iconUrl = icon ?? favicon;
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if (favicon) updates.faviconUrl = favicon;
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if (themeColor) updates.themeColor = themeColor;
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await this.federatedInstanceService.update(instance.id, updates);
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this.logger.succ(`Successfuly updated metadata of ${instance.host}`);
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} catch (e) {
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this.logger.error(`Failed to update metadata of ${instance.host}: ${e}`);
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} finally {
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await this.unlock(host);
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}
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}
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@bindThis
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private async fetchNodeinfo(instance: Instance): Promise<NodeInfo> {
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this.logger.info(`Fetching nodeinfo of ${instance.host} ...`);
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try {
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const wellknown = await this.httpRequestService.getJson('https://' + instance.host + '/.well-known/nodeinfo')
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.catch(err => {
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if (err.statusCode === 404) {
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throw new Error('No nodeinfo provided');
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} else {
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throw err.statusCode ?? err.message;
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}
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}) as Record<string, unknown>;
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if (wellknown.links == null || !Array.isArray(wellknown.links)) {
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throw new Error('No wellknown links');
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}
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const links = wellknown.links as any[];
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const lnik1_0 = links.find(link => link.rel === 'http://nodeinfo.diaspora.software/ns/schema/1.0');
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const lnik2_0 = links.find(link => link.rel === 'http://nodeinfo.diaspora.software/ns/schema/2.0');
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const lnik2_1 = links.find(link => link.rel === 'http://nodeinfo.diaspora.software/ns/schema/2.1');
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const link = lnik2_1 ?? lnik2_0 ?? lnik1_0;
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if (link == null) {
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throw new Error('No nodeinfo link provided');
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}
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const info = await this.httpRequestService.getJson(link.href)
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.catch(err => {
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throw err.statusCode ?? err.message;
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});
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this.logger.succ(`Successfuly fetched nodeinfo of ${instance.host}`);
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return info as NodeInfo;
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} catch (err) {
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this.logger.error(`Failed to fetch nodeinfo of ${instance.host}: ${err}`);
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throw err;
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}
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}
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@bindThis
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private async fetchDom(instance: Instance): Promise<DOMWindow['document']> {
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this.logger.info(`Fetching HTML of ${instance.host} ...`);
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const url = 'https://' + instance.host;
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const html = await this.httpRequestService.getHtml(url);
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const { window } = new JSDOM(html);
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const doc = window.document;
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return doc;
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}
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@bindThis
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private async fetchManifest(instance: Instance): Promise<Record<string, unknown> | null> {
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const url = 'https://' + instance.host;
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const manifestUrl = url + '/manifest.json';
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const manifest = await this.httpRequestService.getJson(manifestUrl) as Record<string, unknown>;
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return manifest;
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}
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@bindThis
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private async fetchFaviconUrl(instance: Instance, doc: DOMWindow['document'] | null): Promise<string | null> {
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const url = 'https://' + instance.host;
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if (doc) {
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// https://github.com/misskey-dev/misskey/pull/8220#issuecomment-1025104043
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const href = Array.from(doc.getElementsByTagName('link')).reverse().find(link => link.relList.contains('icon'))?.href;
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if (href) {
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return (new URL(href, url)).href;
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}
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}
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const faviconUrl = url + '/favicon.ico';
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const favicon = await this.httpRequestService.send(faviconUrl, {
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method: 'HEAD',
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}, { throwErrorWhenResponseNotOk: false });
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if (favicon.ok) {
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return faviconUrl;
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}
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return null;
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}
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@bindThis
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private async fetchIconUrl(instance: Instance, doc: DOMWindow['document'] | null, manifest: Record<string, any> | null): Promise<string | null> {
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if (manifest && manifest.icons && manifest.icons.length > 0 && manifest.icons[0].src) {
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const url = 'https://' + instance.host;
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return (new URL(manifest.icons[0].src, url)).href;
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}
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if (doc) {
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const url = 'https://' + instance.host;
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// https://github.com/misskey-dev/misskey/pull/8220#issuecomment-1025104043
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const links = Array.from(doc.getElementsByTagName('link')).reverse();
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// https://github.com/misskey-dev/misskey/pull/8220/files/0ec4eba22a914e31b86874f12448f88b3e58dd5a#r796487559
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const href =
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[
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links.find(link => link.relList.contains('apple-touch-icon-precomposed'))?.href,
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links.find(link => link.relList.contains('apple-touch-icon'))?.href,
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links.find(link => link.relList.contains('icon'))?.href,
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]
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.find(href => href);
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if (href) {
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return (new URL(href, url)).href;
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}
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}
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return null;
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}
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@bindThis
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private async getThemeColor(info: NodeInfo | null, doc: DOMWindow['document'] | null, manifest: Record<string, any> | null): Promise<string | null> {
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const themeColor = info?.metadata?.themeColor ?? doc?.querySelector('meta[name="theme-color"]')?.getAttribute('content') ?? manifest?.theme_color;
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if (themeColor) {
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const color = new tinycolor(themeColor);
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if (color.isValid()) return color.toHexString();
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}
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return null;
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}
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@bindThis
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private async getSiteName(info: NodeInfo | null, doc: DOMWindow['document'] | null, manifest: Record<string, any> | null): Promise<string | null> {
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if (info && info.metadata) {
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if (typeof info.metadata.nodeName === 'string') {
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return info.metadata.nodeName;
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} else if (typeof info.metadata.name === 'string') {
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return info.metadata.name;
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}
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}
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if (doc) {
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const og = doc.querySelector('meta[property="og:title"]')?.getAttribute('content');
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if (og) {
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return og;
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}
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}
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if (manifest) {
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return manifest.name ?? manifest.short_name;
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}
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return null;
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}
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@bindThis
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private async getDescription(info: NodeInfo | null, doc: DOMWindow['document'] | null, manifest: Record<string, any> | null): Promise<string | null> {
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if (info && info.metadata) {
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if (typeof info.metadata.nodeDescription === 'string') {
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return info.metadata.nodeDescription;
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} else if (typeof info.metadata.description === 'string') {
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return info.metadata.description;
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}
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}
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if (doc) {
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const meta = doc.querySelector('meta[name="description"]')?.getAttribute('content');
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if (meta) {
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return meta;
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}
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const og = doc.querySelector('meta[property="og:description"]')?.getAttribute('content');
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if (og) {
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return og;
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}
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}
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if (manifest) {
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return manifest.name ?? manifest.short_name;
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}
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return null;
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}
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}
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