PeerTube/server/helpers/webfinger.ts

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import * as WebFinger from 'webfinger.js'
import { isTestInstance } from './core-utils'
import { isActivityPubUrlValid } from './custom-validators'
import { WebFingerData } from '../../shared'
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import { fetchRemoteAccountAndCreateServer } from './activitypub'
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const webfinger = new WebFinger({
webfist_fallback: false,
tls_only: isTestInstance(),
uri_fallback: false,
request_timeout: 3000
})
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async function getAccountFromWebfinger (nameWithHost: string) {
const webfingerData: WebFingerData = await webfingerLookup(nameWithHost)
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if (Array.isArray(webfingerData.links) === false) throw new Error('WebFinger links is not an array.')
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const selfLink = webfingerData.links.find(l => l.rel === 'self')
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if (selfLink === undefined || isActivityPubUrlValid(selfLink.href) === false) {
throw new Error('Cannot find self link or href is not a valid URL.')
}
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const res = await fetchRemoteAccountAndCreateServer(selfLink.href)
if (res === undefined) throw new Error('Cannot fetch and create server of remote account ' + selfLink.href)
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return res.account
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}
// ---------------------------------------------------------------------------
export {
getAccountFromWebfinger
}
// ---------------------------------------------------------------------------
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function webfingerLookup (nameWithHost: string) {
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return new Promise<WebFingerData>((res, rej) => {
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webfinger.lookup(nameWithHost, (err, p) => {
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if (err) return rej(err)
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return res(p.object)
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})
})
}