import { DOMWindow, JSDOM } from 'jsdom'; import fetch from 'node-fetch'; import { getJson, getHtml, getAgentByUrl } from '../misc/fetch'; import { Instance } from '../models/entities/instance'; import { Instances } from '../models'; import { getFetchInstanceMetadataLock } from '../misc/app-lock'; import Logger from './logger'; import { URL } from 'url'; const logger = new Logger('metadata', 'cyan'); export async function fetchInstanceMetadata(instance: Instance, force = false): Promise { const unlock = await getFetchInstanceMetadataLock(instance.host); if (!force) { const _instance = await Instances.findOne({ host: instance.host }); const now = Date.now(); if (_instance && _instance.infoUpdatedAt && (now - _instance.infoUpdatedAt.getTime() < 1000 * 60 * 60 * 24)) { unlock(); return; } } logger.info(`Fetching metadata of ${instance.host} ...`); try { const [info, dom, manifest] = await Promise.all([ fetchNodeinfo(instance).catch(() => null), fetchDom(instance).catch(() => null), fetchManifest(instance).catch(() => null), ]); const [favicon, icon, themeColor, name, description] = await Promise.all([ fetchFaviconUrl(instance, dom).catch(() => null), fetchIconUrl(instance, dom, manifest).catch(() => null), getThemeColor(dom, manifest).catch(() => null), getSiteName(info, dom, manifest).catch(() => null), getDescription(info, dom, manifest).catch(() => null), ]); logger.succ(`Successfuly fetched metadata of ${instance.host}`); const updates = { infoUpdatedAt: new Date(), } as Record; if (info) { updates.softwareName = info.software?.name.toLowerCase(); updates.softwareVersion = info.software?.version; updates.openRegistrations = info.openRegistrations; updates.maintainerName = info.metadata ? info.metadata.maintainer ? (info.metadata.maintainer.name || null) : null : null; updates.maintainerEmail = info.metadata ? info.metadata.maintainer ? (info.metadata.maintainer.email || null) : null : null; } if (name) updates.name = name; if (description) updates.description = description; if (icon || favicon) updates.iconUrl = icon || favicon; if (favicon) updates.faviconUrl = favicon; if (themeColor) updates.themeColor = themeColor; await Instances.update(instance.id, updates); logger.succ(`Successfuly updated metadata of ${instance.host}`); } catch (e) { logger.error(`Failed to update metadata of ${instance.host}: ${e}`); } finally { unlock(); } } type NodeInfo = { openRegistrations?: any; software?: { name?: any; version?: any; }; metadata?: { name?: any; nodeName?: any; nodeDescription?: any; description?: any; maintainer?: { name?: any; email?: any; }; }; }; async function fetchNodeinfo(instance: Instance): Promise { logger.info(`Fetching nodeinfo of ${instance.host} ...`); try { const wellknown = await getJson('https://' + instance.host + '/.well-known/nodeinfo') .catch(e => { if (e.statusCode === 404) { throw 'No nodeinfo provided'; } else { throw e.statusCode || e.message; } }); if (wellknown.links == null || !Array.isArray(wellknown.links)) { throw 'No wellknown links'; } const links = wellknown.links as any[]; const lnik1_0 = links.find(link => link.rel === 'http://nodeinfo.diaspora.software/ns/schema/1.0'); const lnik2_0 = links.find(link => link.rel === 'http://nodeinfo.diaspora.software/ns/schema/2.0'); const lnik2_1 = links.find(link => link.rel === 'http://nodeinfo.diaspora.software/ns/schema/2.1'); const link = lnik2_1 || lnik2_0 || lnik1_0; if (link == null) { throw 'No nodeinfo link provided'; } const info = await getJson(link.href) .catch(e => { throw e.statusCode || e.message; }); logger.succ(`Successfuly fetched nodeinfo of ${instance.host}`); return info; } catch (e) { logger.error(`Failed to fetch nodeinfo of ${instance.host}: ${e}`); throw e; } } async function fetchDom(instance: Instance): Promise { logger.info(`Fetching HTML of ${instance.host} ...`); const url = 'https://' + instance.host; const html = await getHtml(url); const { window } = new JSDOM(html); const doc = window.document; return doc; } async function fetchManifest(instance: Instance): Promise | null> { const url = 'https://' + instance.host; const manifestUrl = url + '/manifest.json'; const manifest = await getJson(manifestUrl); return manifest; } async function fetchFaviconUrl(instance: Instance, doc: DOMWindow['document'] | null): Promise { const url = 'https://' + instance.host; if (doc) { const href = doc.querySelector('link[rel="icon"]')?.getAttribute('href'); if (href) { return (new URL(href, url)).href; } } const faviconUrl = url + '/favicon.ico'; const favicon = await fetch(faviconUrl, { timeout: 10000, agent: getAgentByUrl, }); if (favicon.ok) { return faviconUrl; } return null; } async function fetchIconUrl(instance: Instance, doc: DOMWindow['document'] | null, manifest: Record | null): Promise { if (manifest && manifest.icons && manifest.icons.length > 0 && manifest.icons[0].src) { const url = 'https://' + instance.host; return (new URL(manifest.icons[0].src, url)).href; } if (doc) { const url = 'https://' + instance.host; const hrefAppleTouchIconPrecomposed = doc.querySelector('link[rel="apple-touch-icon-precomposed"]')?.getAttribute('href'); const hrefAppleTouchIcon = doc.querySelector('link[rel="apple-touch-icon"]')?.getAttribute('href'); const hrefIcon = doc.querySelector('link[rel="icon"]')?.getAttribute('href'); const href = hrefAppleTouchIconPrecomposed || hrefAppleTouchIcon || hrefIcon; if (href) { return (new URL(href, url)).href; } } return null; } async function getThemeColor(doc: DOMWindow['document'] | null, manifest: Record | null): Promise { if (doc) { const themeColor = doc.querySelector('meta[name="theme-color"]')?.getAttribute('content'); if (themeColor) { return themeColor; } } if (manifest) { return manifest.theme_color; } return null; } async function getSiteName(info: NodeInfo | null, doc: DOMWindow['document'] | null, manifest: Record | null): Promise { if (info && info.metadata) { if (info.metadata.nodeName || info.metadata.name) { return info.metadata.nodeName || info.metadata.name; } } if (doc) { const og = doc.querySelector('meta[property="og:title"]')?.getAttribute('content'); if (og) { return og; } } if (manifest) { return manifest?.name || manifest?.short_name; } return null; } async function getDescription(info: NodeInfo | null, doc: DOMWindow['document'] | null, manifest: Record | null): Promise { if (info && info.metadata) { if (info.metadata.nodeDescription || info.metadata.description) { return info.metadata.nodeDescription || info.metadata.description; } } if (doc) { const meta = doc.querySelector('meta[name="description"]')?.getAttribute('content'); if (meta) { return meta; } const og = doc.querySelector('meta[property="og:description"]')?.getAttribute('content'); if (og) { return og; } } if (manifest) { return manifest?.name || manifest?.short_name; } return null; }