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import { createWriteStream, remove } from 'fs-extra'
import got, { CancelableRequest, Options as GotOptions, RequestError } from 'got'
import { HttpProxyAgent, HttpsProxyAgent } from 'hpagent'
import { join } from 'path'
import { CONFIG } from '../initializers/config'
import { ACTIVITY_PUB, PEERTUBE_VERSION, REQUEST_TIMEOUT, WEBSERVER } from '../initializers/constants'
import { pipelinePromise } from './core-utils'
import { processImage } from './image-utils'
import { logger } from './logger'
import { getProxy, isProxyEnabled } from './proxy'
const httpSignature = require('http-signature')
export interface PeerTubeRequestError extends Error {
statusCode?: number
responseBody?: any
}
type PeerTubeRequestOptions = {
activityPub?: boolean
bodyKBLimit?: number // 1MB
httpSignature?: {
algorithm: string
authorizationHeaderName: string
keyId: string
key: string
headers: string[]
}
timeout?: number
jsonResponse?: boolean
} & Pick<GotOptions, 'headers' | 'json' | 'method' | 'searchParams'>
const peertubeGot = got.extend({
...getAgent(),
headers: {
'user-agent': getUserAgent()
},
handlers: [
(options, next) => {
const promiseOrStream = next(options) as CancelableRequest<any>
const bodyKBLimit = options.context?.bodyKBLimit as number
if (!bodyKBLimit) throw new Error('No KB limit for this request')
const bodyLimit = bodyKBLimit * 1000
/* eslint-disable @typescript-eslint/no-floating-promises */
promiseOrStream.on('downloadProgress', progress => {
if (progress.transferred > bodyLimit && progress.percent !== 1) {
const message = `Exceeded the download limit of ${bodyLimit} B`
logger.warn(message)
// CancelableRequest
if (promiseOrStream.cancel) {
promiseOrStream.cancel()
return
}
// Stream
(promiseOrStream as any).destroy()
}
})
return promiseOrStream
}
],
hooks: {
beforeRequest: [
options => {
const headers = options.headers || {}
headers['host'] = options.url.host
},
options => {
const httpSignatureOptions = options.context?.httpSignature
if (httpSignatureOptions) {
const method = options.method ?? 'GET'
const path = options.path ?? options.url.pathname
if (!method || !path) {
throw new Error(`Cannot sign request without method (${method}) or path (${path}) ${options}`)
}
httpSignature.signRequest({
getHeader: function (header) {
return options.headers[header]
},
setHeader: function (header, value) {
options.headers[header] = value
},
method,
path
}, httpSignatureOptions)
}
},
(options: GotOptions) => {
options.timeout = REQUEST_TIMEOUT
}
]
}
})
function doRequest (url: string, options: PeerTubeRequestOptions = {}) {
const gotOptions = buildGotOptions(options)
return peertubeGot(url, gotOptions)
.catch(err => { throw buildRequestError(err) })
}
function doJSONRequest <T> (url: string, options: PeerTubeRequestOptions = {}) {
const gotOptions = buildGotOptions(options)
return peertubeGot<T>(url, { ...gotOptions, responseType: 'json' })
.catch(err => { throw buildRequestError(err) })
}
async function doRequestAndSaveToFile (
url: string,
destPath: string,
options: PeerTubeRequestOptions = {}
) {
const gotOptions = buildGotOptions(options)
const outFile = createWriteStream(destPath)
try {
await pipelinePromise(
peertubeGot.stream(url, gotOptions),
outFile
)
} catch (err) {
remove(destPath)
.catch(err => logger.error('Cannot remove %s after request failure.', destPath, { err }))
throw buildRequestError(err)
}
}
async function downloadImage (url: string, destDir: string, destName: string, size: { width: number, height: number }) {
const tmpPath = join(CONFIG.STORAGE.TMP_DIR, 'pending-' + destName)
await doRequestAndSaveToFile(url, tmpPath)
const destPath = join(destDir, destName)
try {
await processImage(tmpPath, destPath, size)
} catch (err) {
await remove(tmpPath)
throw err
}
}
function getAgent () {
if (!isProxyEnabled()) return {}
const proxy = getProxy()
logger.info('Using proxy %s.', proxy)
const proxyAgentOptions = {
keepAlive: true,
keepAliveMsecs: 1000,
maxSockets: 256,
maxFreeSockets: 256,
scheduling: 'lifo' as 'lifo',
proxy
}
return {
agent: {
http: new HttpProxyAgent(proxyAgentOptions),
https: new HttpsProxyAgent(proxyAgentOptions)
}
}
}
function getUserAgent () {
return `PeerTube/${PEERTUBE_VERSION} (+${WEBSERVER.URL})`
}
// ---------------------------------------------------------------------------
export {
doRequest,
doJSONRequest,
doRequestAndSaveToFile,
downloadImage
}
// ---------------------------------------------------------------------------
function buildGotOptions (options: PeerTubeRequestOptions) {
const { activityPub, bodyKBLimit = 1000 } = options
const context = { bodyKBLimit, httpSignature: options.httpSignature }
let headers = options.headers || {}
if (!headers.date) {
headers = { ...headers, date: new Date().toUTCString() }
}
if (activityPub && !headers.accept) {
headers = { ...headers, accept: ACTIVITY_PUB.ACCEPT_HEADER }
}
return {
method: options.method,
dnsCache: true,
json: options.json,
searchParams: options.searchParams,
timeout: options.timeout ?? REQUEST_TIMEOUT,
headers,
context
}
}
function buildRequestError (error: RequestError) {
const newError: PeerTubeRequestError = new Error(error.message)
newError.name = error.name
newError.stack = error.stack
if (error.response) {
newError.responseBody = error.response.body
newError.statusCode = error.response.statusCode
}
return newError
}
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