fox-send/app/fileManager.js

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/* global EXPIRE_SECONDS */
import FileSender from './fileSender';
import FileReceiver from './fileReceiver';
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import { copyToClipboard, delay, fadeOut, percent } from './utils';
import * as metrics from './metrics';
function saveFile(file) {
const dataView = new DataView(file.plaintext);
const blob = new Blob([dataView], { type: file.type });
const downloadUrl = URL.createObjectURL(blob);
if (window.navigator.msSaveBlob) {
return window.navigator.msSaveBlob(blob, file.name);
}
const a = document.createElement('a');
a.href = downloadUrl;
a.download = file.name;
document.body.appendChild(a);
a.click();
URL.revokeObjectURL(downloadUrl);
}
function openLinksInNewTab(links, should = true) {
links = links || Array.from(document.querySelectorAll('a:not([target])'));
if (should) {
links.forEach(l => {
l.setAttribute('target', '_blank');
l.setAttribute('rel', 'noopener noreferrer');
});
} else {
links.forEach(l => {
l.removeAttribute('target');
l.removeAttribute('rel');
});
}
return links;
}
function exists(id) {
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.onreadystatechange = () => {
if (xhr.readyState === XMLHttpRequest.HEADERS_RECEIVED) {
resolve(xhr.status === 200);
}
};
xhr.onerror = () => resolve(false);
xhr.ontimeout = () => resolve(false);
xhr.open('get', '/api/exists/' + id);
xhr.timeout = 2000;
xhr.send();
});
}
export default function(state, emitter) {
let lastRender = 0;
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let updateTitle = false;
function render() {
emitter.emit('render');
}
async function checkFiles() {
const files = state.storage.files;
let rerender = false;
for (const file of files) {
const ok = await exists(file.id);
if (!ok) {
state.storage.remove(file.id);
rerender = true;
}
}
if (rerender) {
render();
}
}
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function updateProgress() {
if (updateTitle) {
emitter.emit('DOMTitleChange', percent(state.transfer.progressRatio));
}
render();
}
emitter.on('DOMContentLoaded', () => {
document.addEventListener('blur', () => (updateTitle = true));
document.addEventListener('focus', () => {
updateTitle = false;
emitter.emit('DOMTitleChange', 'Firefox Send');
});
checkFiles();
});
emitter.on('navigate', checkFiles);
emitter.on('render', () => {
lastRender = Date.now();
});
emitter.on('delete', async ({ file, location }) => {
try {
metrics.deletedUpload({
size: file.size,
time: file.time,
speed: file.speed,
type: file.type,
ttl: file.expiresAt - Date.now(),
location
});
state.storage.remove(file.id);
await FileSender.delete(file.id, file.deleteToken);
} catch (e) {
state.raven.captureException(e);
}
state.fileInfo = null;
});
emitter.on('cancel', () => {
state.transfer.cancel();
});
emitter.on('upload', async ({ file, type }) => {
const size = file.size;
const sender = new FileSender(file);
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sender.on('progress', updateProgress);
sender.on('encrypting', render);
state.transfer = sender;
render();
const links = openLinksInNewTab();
await delay(200);
try {
const start = Date.now();
metrics.startedUpload({ size, type });
const info = await sender.upload();
const time = Date.now() - start;
const speed = size / (time / 1000);
metrics.completedUpload({ size, time, speed, type });
await delay(1000);
await fadeOut('upload-progress');
info.name = file.name;
info.size = size;
info.type = type;
info.time = time;
info.speed = speed;
info.createdAt = Date.now();
info.url = `${info.url}#${info.secretKey}`;
info.expiresAt = Date.now() + EXPIRE_SECONDS * 1000;
state.fileInfo = info;
state.storage.addFile(state.fileInfo);
openLinksInNewTab(links, false);
state.transfer = null;
state.storage.totalUploads += 1;
emitter.emit('pushState', `/share/${info.id}`);
} catch (err) {
state.transfer = null;
if (err.message === '0') {
//cancelled. do nothing
metrics.cancelledUpload({ size, type });
return render();
}
state.raven.captureException(err);
metrics.stoppedUpload({ size, type, err });
emitter.emit('replaceState', '/error');
}
});
emitter.on('download', async file => {
const size = file.size;
const url = `/api/download/${file.id}`;
const receiver = new FileReceiver(url, file.key);
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receiver.on('progress', updateProgress);
receiver.on('decrypting', render);
state.transfer = receiver;
const links = openLinksInNewTab();
render();
try {
const start = Date.now();
metrics.startedDownload({ size: file.size, ttl: file.ttl });
const f = await receiver.download();
const time = Date.now() - start;
const speed = size / (time / 1000);
await delay(1000);
await fadeOut('download-progress');
saveFile(f);
state.storage.totalDownloads += 1;
metrics.completedDownload({ size, time, speed });
emitter.emit('pushState', '/completed');
} catch (err) {
// TODO cancelled download
const location = err.message === 'notfound' ? '/404' : '/error';
if (location === '/error') {
state.raven.captureException(err);
metrics.stoppedDownload({ size, err });
}
emitter.emit('replaceState', location);
} finally {
state.transfer = null;
openLinksInNewTab(links, false);
}
});
emitter.on('copy', ({ url, location }) => {
copyToClipboard(url);
metrics.copiedLink({ location });
});
setInterval(() => {
// poll for rerendering the file list countdown timers
if (
state.route === '/' &&
state.storage.files.length > 0 &&
Date.now() - lastRender > 30000
) {
render();
}
}, 60000);
}