chore: use forked StreamSaver (a3261a7e) · Commits · e / tools / webadb

apps/demo/pages/file-manager.tsx

+2 −4

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		@@ -18,7 +18,7 @@ import { asyncEffect, chunkFile, formatSize, formatSpeed, Icons, pickFile, Route
		let StreamSaver: typeof import('streamsaver');
		if (typeof window !== 'undefined') {
		StreamSaver = require('streamsaver');
		// StreamSaver.mitm = new URL('streamsaver/mitm.html?url', import.meta.url).toString() + '?sw=' + new URL('streamsaver/sw.js?url', import.meta.url);
		StreamSaver.mitm = '/StreamSaver/mitm.html';
		}

		interface ListItem extends AdbSyncEntryResponse {
		@@ -154,9 +154,7 @@ class FileManagerState {
		});
		break;
		case 1:
		// StreamSaver doesn't work with strict site isolation enabled (`Cross-Origin-Embedder-Policy: require-corp`),
		// `SharedArrayBuffer` doesn't work WITHOUT strict site isolation.
		if (this.selectedItems[0].type === LinuxFileType.File && typeof SharedArrayBuffer === 'undefined') {
		if (this.selectedItems[0].type === LinuxFileType.File) {
		result.push({
		key: 'download',
		text: 'Download',

apps/demo/public/StreamSaver/mitm.html

0 → 100644

+163 −0

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		<!--
		mitm.html is the lite "man in the middle"

		This is only meant to signal the opener's messageChannel to
		the service worker - when that is done this mitm can be closed
		but it's better to keep it alive since this also stops the sw
		from restarting

		The service worker is capable of intercepting all request and fork their
		own "fake" response - wish we are going to craft
		when the worker then receives a stream then the worker will tell the opener
		to open up a link that will start the download
		-->
		<script>
		// This will prevent the sw from restarting
		let keepAlive = () => {
		keepAlive = () => {}
		var ping = location.href.substr(0, location.href.lastIndexOf('/')) + '/ping'
		var interval = setInterval(() => {
		if (sw) {
		sw.postMessage('ping')
		} else {
		fetch(ping).then(res => res.text(!res.ok && clearInterval(interval)))
		}
		}, 10000)
		}

		// message event is the first thing we need to setup a listner for
		// don't want the opener to do a random timeout - instead they can listen for
		// the ready event
		// but since we need to wait for the Service Worker registration, we store the
		// message for later
		let messages = []
		window.onmessage = evt => messages.push(evt)

		let sw = null
		let scope = ''

		function registerWorker() {
		return navigator.serviceWorker.getRegistration('./').then(swReg => {
		return swReg \|\| navigator.serviceWorker.register('sw.js', { scope: './' })
		}).then(swReg => {
		const swRegTmp = swReg.installing \|\| swReg.waiting

		scope = swReg.scope

		return (sw = swReg.active) \|\| new Promise(resolve => {
		swRegTmp.addEventListener('statechange', fn = () => {
		if (swRegTmp.state === 'activated') {
		swRegTmp.removeEventListener('statechange', fn)
		sw = swReg.active
		resolve()
		}
		})
		})
		})
		}

		// Now that we have the Service Worker registered we can process messages
		function onMessage (event) {
		let { data, ports, origin } = event

		// It's important to have a messageChannel, don't want to interfere
		// with other simultaneous downloads
		if (!ports \|\| !ports.length) {
		throw new TypeError("[StreamSaver] You didn't send a messageChannel")
		}

		if (typeof data !== 'object') {
		throw new TypeError("[StreamSaver] You didn't send a object")
		}

		// the default public service worker for StreamSaver is shared among others.
		// so all download links needs to be prefixed to avoid any other conflict
		data.origin = origin

		// if we ever (in some feature versoin of streamsaver) would like to
		// redirect back to the page of who initiated a http request
		data.referrer = data.referrer \|\| document.referrer \|\| origin

		// pass along version for possible backwards compatibility in sw.js
		data.streamSaverVersion = new URLSearchParams(location.search).get('version')

		if (data.streamSaverVersion === '1.2.0') {
		console.warn('[StreamSaver] please update streamsaver')
		}

		/** @since v2.0.0 */
		if (!data.headers) {
		console.warn("[StreamSaver] pass `data.headers` that you would like to pass along to the service worker\nit should be a 2D array or a key/val object that fetch's Headers api accepts")
		} else {
		// test if it's correct
		// should thorw a typeError if not
		new Headers(data.headers)
		}

		/** @since v2.0.0 */
		if (typeof data.filename === 'string') {
		console.warn("[StreamSaver] You shouldn't send `data.filename` anymore. It should be included in the Content-Disposition header option")
		// Do what File constructor do with fileNames
		data.filename = data.filename.replace(/\//g, ':')
		}

		/** @since v2.0.0 */
		if (data.size) {
		console.warn("[StreamSaver] You shouldn't send `data.size` anymore. It should be included in the content-length header option")
		}

		/** @since v2.0.0 */
		if (data.readableStream) {
		console.warn("[StreamSaver] You should send the readableStream in the messageChannel, not throught mitm")
		}

		/** @since v2.0.0 */
		if (!data.pathname) {
		console.warn("[StreamSaver] Please send `data.pathname` (eg: /pictures/summer.jpg)")
		data.pathname = Math.random().toString().slice(-6) + '/' + data.filename
		}

		// remove all leading slashes
		data.pathname = data.pathname.replace(/^\/+/g, '')

		// set the absolute pathname to the download url.
		data.url = new URL(`${scope}/${data.pathname}`).toString()

		if (!data.url.startsWith(`${scope}/`)) {
		throw new TypeError('[StreamSaver] bad `data.pathname`')
		}

		// This sends the message data as well as transferring
		// messageChannel.port2 to the service worker. The service worker can
		// then use the transferred port to reply via postMessage(), which
		// will in turn trigger the onmessage handler on messageChannel.port1.

		const transferable = data.readableStream
		? [ ports[0], data.readableStream ]
		: [ ports[0] ]

		if (!(data.readableStream \|\| data.transferringReadable)) {
		keepAlive()
		}

		return sw.postMessage(data, transferable)
		}

		if (window.opener) {
		// The opener can't listen to onload event, so we need to help em out!
		// (telling them that we are ready to accept postMessage's)
		window.opener.postMessage('StreamSaver::loadedPopup', '*')
		}

		if (navigator.serviceWorker) {
		registerWorker().then(() => {
		window.onmessage = onMessage
		messages.forEach(window.onmessage)
		})
		} else {
		// FF can ping sw with fetch from a secure hidden iframe
		// shouldn't really be possible?
		keepAlive()
		}

		</script>

apps/demo/public/StreamSaver/sw.js

0 → 100644

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		/* global self ReadableStream Response */

		self.addEventListener('install', () => {
		self.skipWaiting()
		})

		self.addEventListener('activate', event => {
		event.waitUntil(self.clients.claim())
		})

		const map = new Map()

		// This should be called once per download
		// Each event has a dataChannel that the data will be piped through
		self.onmessage = event => {
		// We send a heartbeat every x second to keep the
		// service worker alive if a transferable stream is not sent
		if (event.data === 'ping') {
		return
		}

		const data = event.data
		const downloadUrl = data.url \|\| Math.random() + '/' + (typeof data === 'string' ? data : data.filename)
		const port = event.ports[0]
		const metadata = new Array(3) // [stream, data, port]

		metadata[1] = data
		metadata[2] = port

		// Note to self:
		// old streamsaver v1.2.0 might still use `readableStream`...
		// but v2.0.0 will always transfer the stream through MessageChannel #94
		if (event.data.readableStream) {
		metadata[0] = event.data.readableStream
		} else if (event.data.transferringReadable) {
		port.onmessage = evt => {
		port.onmessage = null
		metadata[0] = evt.data.readableStream
		}
		} else {
		metadata[0] = createStream(port)
		}

		map.set(downloadUrl, metadata)
		port.postMessage({ download: downloadUrl })
		}

		function createStream (port) {
		// ReadableStream is only supported by chrome 52
		return new ReadableStream({
		start (controller) {
		// When we receive data on the messageChannel, we write
		port.onmessage = ({ data }) => {
		if (data === 'end') {
		return controller.close()
		}

		if (data === 'abort') {
		controller.error('Aborted the download')
		return
		}

		controller.enqueue(data)
		}
		},
		cancel () {
		console.log('user aborted')
		}
		})
		}

		self.onfetch = event => {
		const url = event.request.url

		// this only works for Firefox
		if (url.endsWith('/ping')) {
		return event.respondWith(new Response('pong'))
		}

		const hijacke = map.get(url)

		if (!hijacke) return null

		const [ stream, data, port ] = hijacke

		map.delete(url)

		// Not comfortable letting any user control all headers
		// so we only copy over the length & disposition
		const responseHeaders = new Headers({
		'Content-Type': 'application/octet-stream; charset=utf-8',

		// To be on the safe side, The link can be opened in a iframe.
		// but octet-stream should stop it.
		'Content-Security-Policy': "default-src 'none'",
		'X-Content-Security-Policy': "default-src 'none'",
		'Cross-Origin-Embedder-Policy': 'require-corp',
		'X-WebKit-CSP': "default-src 'none'",
		'X-XSS-Protection': '1; mode=block'
		})

		let headers = new Headers(data.headers \|\| {})

		if (headers.has('Content-Length')) {
		responseHeaders.set('Content-Length', headers.get('Content-Length'))
		}

		if (headers.has('Content-Disposition')) {
		responseHeaders.set('Content-Disposition', headers.get('Content-Disposition'))
		}

		// data, data.filename and size should not be used anymore
		if (data.size) {
		console.warn('Depricated')
		responseHeaders.set('Content-Length', data.size)
		}

		let fileName = typeof data === 'string' ? data : data.filename
		if (fileName) {
		console.warn('Depricated')
		// Make filename RFC5987 compatible
		fileName = encodeURIComponent(fileName).replace(/['()]/g, escape).replace(/\*/g, '%2A')
		responseHeaders.set('Content-Disposition', "attachment; filename*=UTF-8''" + fileName)
		}

		event.respondWith(new Response(stream, { headers: responseHeaders }))

		port.postMessage({ debug: 'Download started' })
		}

apps/demo/scripts/postinstall.js

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		const fs = require('fs');
		const path = require('path');

		const PublicFolder = path.resolve(__dirname, '..', 'public');

		const SourceFolder = path.dirname(require.resolve('streamsaver'));

		const DistFolder = path.resolve(PublicFolder, 'StreamSaver');

		if (!fs.existsSync(DistFolder)) {
		fs.mkdirSync(DistFolder);
		}

		function copyFile(name) {
		fs.copyFileSync(path.resolve(SourceFolder, name), path.resolve(DistFolder, name));
		}

		copyFile('mitm.html');
		copyFile('sw.js');