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Merge pull request #514 from mozilla/refactor-download
use async and removed jquery from download.js
This commit is contained in:
Danny Coates
GitHub
commit
f1fb877c7f
@ -5,26 +5,29 @@ import Storage from './storage';
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import * as links from './links';
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import * as metrics from './metrics';
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import * as progress from './progress';
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import $ from 'jquery/dist/jquery.slim';
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const storage = new Storage();
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function onUnload(size) {
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metrics.cancelledDownload({ size });
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}
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function download() {
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const $downloadBtn = $('#download-btn');
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const $title = $('.title');
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const $file = $('#dl-file');
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const size = Number($file.attr('data-size'));
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const ttl = Number($file.attr('data-ttl'));
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async function download() {
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const downloadBtn = document.getElementById('download-btn');
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const downloadPanel = document.getElementById('download-page-one');
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const progressPanel = document.getElementById('download-progress');
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const file = document.getElementById('dl-file');
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const size = Number(file.getAttribute('data-size'));
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const ttl = Number(file.getAttribute('data-ttl'));
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const unloadHandler = onUnload.bind(null, size);
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const startTime = Date.now();
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const fileReceiver = new FileReceiver();
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const fileReceiver = new FileReceiver(
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'/assets' + location.pathname.slice(0, -1),
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location.hash.slice(1)
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);
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$downloadBtn.attr('disabled', 'disabled');
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$('#download-page-one').attr('hidden', true);
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$('#download-progress').removeAttr('hidden');
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downloadBtn.disabled = true;
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downloadPanel.hidden = true;
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progressPanel.hidden = false;
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metrics.startedDownload({ size, ttl });
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links.setOpenInNewTab(true);
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window.addEventListener('unload', unloadHandler);
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@ -41,76 +44,72 @@ function download() {
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document.l10n.formatValue('decryptingFile').then(progress.setText);
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});
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fileReceiver
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.download()
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.catch(err => {
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metrics.stoppedDownload({ size, err });
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try {
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const file = await fileReceiver.download();
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const endTime = Date.now();
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const time = endTime - startTime;
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const downloadTime = endTime - downloadEnd;
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const speed = size / (downloadTime / 1000);
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if (err.message === 'notfound') {
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location.reload();
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} else {
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document.l10n.formatValue('errorPageHeader').then(translated => {
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$title.text(translated);
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});
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$downloadBtn.attr('hidden', true);
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$('#expired-img').removeAttr('hidden');
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}
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throw err;
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})
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.then(([decrypted, file]) => {
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const fname = file.name;
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const endTime = Date.now();
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const time = endTime - startTime;
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const downloadTime = endTime - downloadEnd;
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const speed = size / (downloadTime / 1000);
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storage.totalDownloads += 1;
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metrics.completedDownload({ size, time, speed });
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progress.setText(' ');
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document.l10n
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.formatValues('downloadNotification', 'downloadFinish')
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.then(translated => {
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notify(translated[0]);
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$title.text(translated[1]);
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});
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links.setOpenInNewTab(false);
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storage.totalDownloads += 1;
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metrics.completedDownload({ size, time, speed });
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progress.setText(' ');
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document.l10n
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.formatValues('downloadNotification', 'downloadFinish')
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.then(translated => {
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notify(translated[0]);
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document.getElementById('dl-title').textContent = translated[1];
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document.querySelector('#download-progress .description').textContent =
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' ';
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});
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const dataView = new DataView(file.plaintext);
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const blob = new Blob([dataView], { type: file.type });
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const downloadUrl = URL.createObjectURL(blob);
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const dataView = new DataView(decrypted);
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const blob = new Blob([dataView], { type: file.type });
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const downloadUrl = URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = downloadUrl;
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if (window.navigator.msSaveBlob) {
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window.navigator.msSaveBlob(blob, file.name);
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return;
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}
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a.download = file.name;
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document.body.appendChild(a);
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a.click();
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URL.revokeObjectURL(downloadUrl);
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} catch (err) {
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metrics.stoppedDownload({ size, err });
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const a = document.createElement('a');
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a.href = downloadUrl;
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if (window.navigator.msSaveBlob) {
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// if we are in microsoft edge or IE
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window.navigator.msSaveBlob(blob, fname);
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return;
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}
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a.download = fname;
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document.body.appendChild(a);
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a.click();
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URL.revokeObjectURL(downloadUrl);
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})
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.catch(err => {
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Raven.captureException(err);
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return Promise.reject(err);
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})
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.then(() => links.setOpenInNewTab(false));
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if (err.message === 'notfound') {
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location.reload();
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} else {
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progressPanel.hidden = true;
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downloadPanel.hidden = true;
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document.getElementById('upload-error').hidden = false;
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}
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Raven.captureException(err);
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}
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}
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$(() => {
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const $file = $('#dl-file');
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const filename = $file.attr('data-filename');
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const b = Number($file.attr('data-size'));
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document.addEventListener('DOMContentLoaded', function() {
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const file = document.getElementById('dl-file');
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const filename = file.getAttribute('data-filename');
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const b = Number(file.getAttribute('data-size'));
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const size = bytes(b);
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document.l10n
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.formatValue('downloadFileSize', { size })
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.then(str => $('#dl-filesize').text(str));
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document.l10n.formatValue('downloadFileSize', { size }).then(str => {
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document.getElementById('dl-filesize').textContent = str;
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});
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document.l10n
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.formatValue('downloadingPageProgress', { filename, size })
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.then(str => $('#dl-title').text(str));
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.then(str => {
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document.getElementById('dl-title').textContent = str;
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});
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gcmCompliant()
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.then(() => {
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$('#download-btn').on('click', download);
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document
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.getElementById('download-btn')
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.addEventListener('click', download);
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})
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.catch(err => {
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metrics.unsupported({ err }).then(() => {
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@ -2,87 +2,80 @@ import EventEmitter from 'events';
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import { hexToArray } from './utils';
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export default class FileReceiver extends EventEmitter {
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constructor() {
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constructor(url, k) {
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super();
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this.key = window.crypto.subtle.importKey(
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'jwk',
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{
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k,
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kty: 'oct',
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alg: 'A128GCM',
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ext: true
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},
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{
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name: 'AES-GCM'
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},
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false,
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['decrypt']
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);
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this.url = url;
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}
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download() {
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return window.crypto.subtle
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.importKey(
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'jwk',
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{
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kty: 'oct',
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k: location.hash.slice(1),
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alg: 'A128GCM',
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ext: true
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},
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{
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name: 'AES-GCM'
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},
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true,
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['encrypt', 'decrypt']
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)
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.then(key => {
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return new Promise((resolve, reject) => {
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const xhr = new XMLHttpRequest();
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downloadFile() {
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return new Promise((resolve, reject) => {
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const xhr = new XMLHttpRequest();
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xhr.onprogress = event => {
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if (event.lengthComputable && event.target.status !== 404) {
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this.emit('progress', [event.loaded, event.total]);
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}
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};
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xhr.onprogress = event => {
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if (event.lengthComputable && event.target.status !== 404) {
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this.emit('progress', [event.loaded, event.total]);
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}
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};
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xhr.onload = function(event) {
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if (xhr.status === 404) {
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reject(new Error('notfound'));
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return;
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}
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xhr.onload = function(event) {
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if (xhr.status === 404) {
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reject(new Error('notfound'));
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return;
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}
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const blob = new Blob([this.response]);
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const type = xhr.getResponseHeader('Content-Type');
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const meta = JSON.parse(xhr.getResponseHeader('X-File-Metadata'));
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const fileReader = new FileReader();
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fileReader.onload = function() {
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resolve([
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{
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data: this.result,
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filename: meta.filename,
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type,
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iv: meta.id
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},
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key
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]);
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};
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const blob = new Blob([this.response]);
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const type = xhr.getResponseHeader('Content-Type');
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const meta = JSON.parse(xhr.getResponseHeader('X-File-Metadata'));
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const fileReader = new FileReader();
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fileReader.onload = function() {
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resolve({
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data: this.result,
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name: meta.filename,
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type,
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iv: meta.id
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});
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};
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fileReader.readAsArrayBuffer(blob);
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};
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fileReader.readAsArrayBuffer(blob);
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};
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xhr.open('get', '/assets' + location.pathname.slice(0, -1), true);
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xhr.responseType = 'blob';
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xhr.send();
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});
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})
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.then(([fdata, key]) => {
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this.emit('decrypting');
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return Promise.all([
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window.crypto.subtle
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.decrypt(
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{
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name: 'AES-GCM',
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iv: hexToArray(fdata.iv),
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tagLength: 128
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},
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key,
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fdata.data
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)
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.then(decrypted => {
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return Promise.resolve(decrypted);
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}),
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{
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name: decodeURIComponent(fdata.filename),
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type: fdata.type
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}
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]);
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});
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xhr.open('get', this.url);
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xhr.responseType = 'blob';
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xhr.send();
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});
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}
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async download() {
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const key = await this.key;
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const file = await this.downloadFile();
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this.emit('decrypting');
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const plaintext = await window.crypto.subtle.decrypt(
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{
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name: 'AES-GCM',
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iv: hexToArray(file.iv),
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tagLength: 128
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},
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key,
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file.data
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);
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return {
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plaintext,
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name: decodeURIComponent(file.name),
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type: file.type
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};
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}
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}
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@ -35,5 +35,10 @@
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</div>
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</div>
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<div id="upload-error" hidden="true">
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<div class="title" data-l10n-id="errorPageHeader"></div>
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<img id="upload-error-img" data-l10n-id="errorAltText" src="/resources/illustration_error.svg"/>
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</div>
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<a class="send-new" data-state="completed" data-l10n-id="sendYourFilesLink" href="/"></a>
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</div>
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