87 lines
2.6 KiB
TypeScript
87 lines
2.6 KiB
TypeScript
import * as Bluebird from 'bluebird'
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import { createWriteStream, remove } from 'fs-extra'
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import * as request from 'request'
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import { ACTIVITY_PUB } from '../initializers/constants'
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import { processImage } from './image-utils'
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import { join } from 'path'
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import { logger } from './logger'
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import { CONFIG } from '../initializers/config'
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function doRequest <T> (
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requestOptions: request.CoreOptions & request.UriOptions & { activityPub?: boolean },
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bodyKBLimit = 1000 // 1MB
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): Bluebird<{ response: request.RequestResponse, body: T }> {
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if (requestOptions.activityPub === true) {
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if (!Array.isArray(requestOptions.headers)) requestOptions.headers = {}
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requestOptions.headers['accept'] = ACTIVITY_PUB.ACCEPT_HEADER
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}
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return new Bluebird<{ response: request.RequestResponse, body: T }>((res, rej) => {
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request(requestOptions, (err, response, body) => err ? rej(err) : res({ response, body }))
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.on('data', onRequestDataLengthCheck(bodyKBLimit))
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})
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}
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function doRequestAndSaveToFile (
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requestOptions: request.CoreOptions & request.UriOptions,
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destPath: string,
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bodyKBLimit = 10000 // 10MB
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) {
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return new Bluebird<void>((res, rej) => {
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const file = createWriteStream(destPath)
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file.on('finish', () => res())
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request(requestOptions)
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.on('data', onRequestDataLengthCheck(bodyKBLimit))
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.on('error', err => {
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file.close()
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remove(destPath)
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.catch(err => logger.error('Cannot remove %s after request failure.', destPath, { err }))
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return rej(err)
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})
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.pipe(file)
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})
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}
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async function downloadImage (url: string, destDir: string, destName: string, size: { width: number, height: number }) {
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const tmpPath = join(CONFIG.STORAGE.TMP_DIR, 'pending-' + destName)
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await doRequestAndSaveToFile({ method: 'GET', uri: url }, tmpPath)
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const destPath = join(destDir, destName)
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try {
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await processImage({ path: tmpPath }, destPath, size)
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} catch (err) {
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await remove(tmpPath)
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throw err
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}
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}
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// ---------------------------------------------------------------------------
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export {
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doRequest,
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doRequestAndSaveToFile,
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downloadImage
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}
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// ---------------------------------------------------------------------------
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// Thanks to https://github.com/request/request/issues/2470#issuecomment-268929907 <3
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function onRequestDataLengthCheck (bodyKBLimit: number) {
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let bufferLength = 0
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const bytesLimit = bodyKBLimit * 1000
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return function (chunk) {
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bufferLength += chunk.length
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if (bufferLength > bytesLimit) {
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this.abort()
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const error = new Error(`Response was too large - aborted after ${bytesLimit} bytes.`)
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this.emit('error', error)
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}
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}
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}
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