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Code Issues Releases Activity

Merge pull request #28 from mozilla/progress_bar

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Added a UI for the uploader end, made stylistic changes, implemented deleting
This commit is contained in:
Danny Coates 2017-06-01 10:55:54 -07:00 committed by GitHub
commit 0f64dcad85
7 changed files with 363 additions and 196 deletions
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121
app.js
View File

@ -1,40 +1,46 @@
const express = require('express')
var busboy = require('connect-busboy'); //middleware for form/file upload
var path = require('path'); //used for file path
var fs = require('fs-extra'); //File System - for file manipulation
const express = require("express")
const busboy = require("connect-busboy");
const path = require("path");
const fs = require("fs-extra");
const bodyParser = require("body-parser");
const crypto = require("crypto");
const app = express()
var redis = require("redis"),
const redis = require("redis"),
client = redis.createClient();
client.on('error', function(err) {
client.on("error", function(err) {
console.log(err);
})
app.use(busboy());
app.use(express.static(path.join(__dirname, 'public')));
app.use(bodyParser.json());
app.use(express.static(path.join(__dirname, "public")));
app.get('/', function (req, res) {
res.send('Hello World!')
})
app.get('/download/:id', function(req, res) {
res.sendFile(path.join(__dirname + '/public/download.html'));
app.get("/download/:id", function(req, res) {
res.sendFile(path.join(__dirname + "/public/download.html"));
});
app.get('/assets/download/:id', function(req, res) {
app.get("/assets/download/:id", function(req, res) {
let id = req.params.id;
if (!validateID(id)){
res.send(404);
return;
}
client.hget(id, "filename", function(err, reply) { // maybe some expiration logic too
if (!reply) {
if (!reply) {
res.sendStatus(404);
} else {
res.setHeader('Content-Disposition', 'attachment; filename=' + reply);
res.setHeader('Content-Type', 'application/octet-stream');
res.setHeader("Content-Disposition", "attachment; filename=" + reply);
res.setHeader("Content-Type", "application/octet-stream");
res.download(__dirname + '/static/' + id, reply, function(err) {
res.download(__dirname + "/static/" + id, reply, function(err) {
if (!err) {
client.del(id);
fs.unlinkSync(__dirname + '/static/' + id);
fs.unlinkSync(__dirname + "/static/" + id);
}
});
}
@ -42,31 +48,68 @@ app.get('/assets/download/:id', function(req, res) {
});
app.route('/upload/:id')
.post(function (req, res, next) {
app.post("/delete/:id", function(req, res) {
let id = req.params.id;
var fstream;
req.pipe(req.busboy);
req.busboy.on('file', function (fieldname, file, filename) {
console.log("Uploading: " + filename);
if (!validateID(id)){
res.send(404);
return;
}
let delete_token = req.body.delete_token;
if (!delete_token){
res.sendStatus(404);
}
//Path where image will be uploaded
fstream = fs.createWriteStream(__dirname + '/static/' + req.params.id);
file.pipe(fstream);
fstream.on('close', function () {
let id = req.params.id;
client.hset(id, "filename", filename, redis.print);
client.hset(id, "expiration", 0, redis.print);
client.expire(id, 86400000);
console.log("Upload Finished of " + filename);
res.send(id);
});
client.hget(id, "delete", function(err, reply) {
if (!reply) {
res.sendStatus(404);
} else {
client.del(id);
fs.unlinkSync(__dirname + "/static/" + id);
res.sendStatus(200);
}
})
});
app.post("/upload/:id", function (req, res, next) {
if (!validateID(req.params.id)){
res.send(404);
return;
}
var fstream;
req.pipe(req.busboy);
req.busboy.on("file", function (fieldname, file, filename) {
console.log("Uploading: " + filename);
//Path where image will be uploaded
fstream = fs.createWriteStream(__dirname + "/static/" + req.params.id);
file.pipe(fstream);
fstream.on("close", function () {
let id = req.params.id;
let uuid = crypto.randomBytes(10).toString('hex');
client.hmset([id, "filename", filename, "delete", uuid]);
// delete the file off the server in 24 hours
// setTimeout(function() {
// fs.unlinkSync(__dirname + "/static/" + id);
// }, 86400000);
client.expire(id, 86400000);
console.log("Upload Finished of " + filename);
res.send(uuid);
});
});
});
app.listen(3000, function () {
console.log('Portal app listening on port 3000!')
console.log("Portal app listening on port 3000!")
})
function validateID(route_id) {
return route_id.match(/^[0-9a-fA-F]{32}$/) !== null;
}

1
package.json
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@ -9,6 +9,7 @@
"author": "",
"license": "ISC",
"dependencies": {
"body-parser": "^1.17.2",
"connect-busboy": "0.0.2",
"express": "^4.15.3",
"fs-extra": "^3.0.1",

7
public/download.html
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@ -2,11 +2,14 @@
<html>
<head>
<title>Download your file</title>
<script type="text/javascript" src="/file.js"></script>
<script type="text/javascript" src="/download.js"></script>
</head>
<body>
<button onclick="download()">DOWNLOAD</button>
<button onclick="download()">DOWNLOAD</button>
<ul id="downloaded_files">
</ul>
</body>
</html>

128
public/download.js Normal file
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@ -0,0 +1,128 @@
function download() {
var xhr = new XMLHttpRequest();
xhr.open("get", "/assets" + location.pathname.slice(0, -1), true);
xhr.responseType = "blob";
var li = document.createElement("li");
var progress = document.createElement("p");
li.appendChild(progress);
document.getElementById("downloaded_files").appendChild(li);
xhr.addEventListener("progress", returnBindedLI(li, progress));
xhr.onload = function(e) {
// maybe send a separate request before this one to get the filename?
// maybe render the html itself with the filename, since it's generated server side
// after a get request with the unique id
var name = document.createElement("p");
name.innerHTML = xhr.getResponseHeader("Content-Disposition").match(/filename="(.+)"/)[1];
li.insertBefore(name, li.firstChild);
if (this.status == 200) {
let self = this;
var blob = new Blob([this.response]);
var arrayBuffer;
var fileReader = new FileReader();
fileReader.onload = function() {
arrayBuffer = this.result;
var array = new Uint8Array(arrayBuffer);
salt = strToIv(location.pathname.slice(10, -1));
window.crypto.subtle.importKey(
"jwk",
{
kty: "oct",
k: location.hash.slice(1),
alg: "A128CBC",
ext: true,
},
{
name: "AES-CBC",
},
true,
["encrypt", "decrypt"])
.then(function(key){
window.crypto.subtle.decrypt(
{
name: "AES-CBC",
iv: salt,
},
key,
array)
.then(function(decrypted){
var dataView = new DataView(decrypted);
var blob = new Blob([dataView]);
var downloadUrl = URL.createObjectURL(blob);
var a = document.createElement("a");
a.href = downloadUrl;
a.download = xhr.getResponseHeader("Content-Disposition").match(/filename="(.+)"/)[1];
document.body.appendChild(a);
a.click();
})
.catch(function(err){
alert("This link is either invalid or has expired, or the uploader has deleted the file.");
console.error(err);
});
})
.catch(function(err){
console.error(err);
});
};
fileReader.readAsArrayBuffer(blob);
} else {
alert("This link is either invalid or has expired, or the uploader has deleted the file.")
}
};
xhr.send();
}
function ivToStr(iv) {
let hexStr = "";
for (var i in iv) {
if (iv[i] < 16) {
hexStr += "0" + iv[i].toString(16);
} else {
hexStr += iv[i].toString(16);
}
}
window.hexStr = hexStr;
return hexStr;
}
function strToIv(str) {
var iv = new Uint8Array(16);
for (var i = 0; i < str.length; i += 2) {
iv[i/2] = parseInt((str.charAt(i) + str.charAt(i + 1)), 16);
}
return iv;
}
function returnBindedLI(li, progress) {
return function updateProgress(e) {
if (e.lengthComputable) {
var percentComplete = Math.floor((e.loaded / e.total) * 100);
progress.innerHTML = "Progress: " + percentComplete + "%";
}
if (percentComplete === 100) {
var finished = document.createElement("p");
finished.innerHTML = "Your download has finished.";
li.appendChild(finished);
var close = document.createElement("button");
close.innerHTML = "Ok";
close.addEventListener("click", function() {
document.getElementById("downloaded_files").removeChild(li);
});
li.appendChild(close);
}
}
}

149
public/file.js
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@ -1,149 +0,0 @@
function download() {
var xhr = new XMLHttpRequest();
xhr.open('get', '/assets' + location.pathname.slice(0, -1), true);
xhr.responseType = 'blob';
xhr.onload = function(e) {
if (this.status == 200) {
let self = this;
var blob = new Blob([this.response]);
var arrayBuffer;
var fileReader = new FileReader();
fileReader.onload = function() {
arrayBuffer = this.result;
var array = new Uint8Array(arrayBuffer);
salt = strToIv(location.pathname.slice(10, -1));
window.crypto.subtle.importKey(
"jwk",
{
kty: "oct",
k: location.hash.slice(1),
alg: "A128CBC",
ext: true,
},
{
name: "AES-CBC",
},
true,
["encrypt", "decrypt"]
)
.then(function(key){
window.crypto.subtle.decrypt(
{
name: "AES-CBC",
iv: salt,
},
key,
array
)
.then(function(decrypted){
var dataView = new DataView(decrypted);
var blob = new Blob([dataView]);
var downloadUrl = URL.createObjectURL(blob);
var a = document.createElement("a");
a.href = downloadUrl;
a.download = xhr.getResponseHeader('Content-Disposition').match(/filename="(.+)"/)[1];
console.log(xhr.getResponseHeader('Content-Disposition'));
document.body.appendChild(a);
a.click();
})
.catch(function(err){
alert('This link is either invalid or has expired.');
console.error(err);
});
})
.catch(function(err){
console.error(err);
});
};
fileReader.readAsArrayBuffer(blob);
} else {
alert('Unable to download excel.')
}
};
xhr.send();
}
function onChange(event) {
var file = event.target.files[0];
var reader = new FileReader();
reader.onload = function(event) {
let self = this;
window.crypto.subtle.generateKey({
name: "AES-CBC",
length: 128
},
true,
["encrypt", "decrypt"])
.then(function(key){
var arrayBuffer = self.result;
var array = new Uint8Array(arrayBuffer);
var random_iv = window.crypto.getRandomValues(new Uint8Array(16));
window.crypto.subtle.encrypt({
name: "AES-CBC",
iv: random_iv },
key,
array)
.then(function(encrypted){
console.log('Send this salt to a friend: [' + random_iv.toString() + ']');
var dataView = new DataView(encrypted);
var blob = new Blob([dataView], { type: file.type });
var fd = new FormData();
fd.append('fname', file.name);
fd.append('data', blob, file.name);
var xhr = new XMLHttpRequest();
var hex = ivToStr(random_iv);
xhr.open('post', '/upload/' + hex, true);
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
window.crypto.subtle.exportKey("jwk", key).then(function(keydata){
console.log('Go to this URL: http://localhost:3000/download/' + hex + '/#' + keydata.k);
alert('Go to this URL: http://localhost:3000/download/' + hex + '/#' + keydata.k);
})
}
};
xhr.send(fd);
})
.catch(function(err){
console.error(err);
});
})
.catch(function(err){
console.error(err);
});
};
reader.readAsArrayBuffer(file);
}
function ivToStr(iv) {
let hexStr = '';
for (var i in iv) {
if (iv[i] < 16) {
hexStr += '0' + iv[i].toString(16);
} else {
hexStr += iv[i].toString(16);
}
}
window.hexStr = hexStr;
return hexStr;
}
function strToIv(str) {
var iv = new Uint8Array(16);
for (var i = 0; i < str.length; i += 2) {
iv[i/2] = parseInt((str.charAt(i) + str.charAt(i + 1)), 16);
}
return iv;
}

12
public/index.html
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@ -2,17 +2,17 @@
<html>
<head>
<title>Firefox Fileshare</title>
<script src="file.js"></script>
<script src="upload.js"></script>
</head>
<body>
<form method='post' action='upload' enctype="multipart/form-data">
<input type='file' onchange="onChange(event)" name='fileUploaded' />
</form>
<form method="post" action="upload" enctype="multipart/form-data">
<input type="file" onchange="onChange(event)" name="fileUploaded" />
</form>
<ul id="uploaded_files">
</ul>
</body>
</html>

141
public/upload.js Normal file
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@ -0,0 +1,141 @@
function onChange(event) {
var file = event.target.files[0];
var reader = new FileReader();
reader.onload = function(event) {
let self = this;
window.crypto.subtle.generateKey({
name: "AES-CBC",
length: 128
},
true,
["encrypt", "decrypt"])
.then(function(key){
var arrayBuffer = self.result;
var array = new Uint8Array(arrayBuffer);
var random_iv = window.crypto.getRandomValues(new Uint8Array(16));
window.crypto.subtle.encrypt({
name: "AES-CBC",
iv: random_iv },
key,
array)
.then(function(encrypted){
var dataView = new DataView(encrypted);
var blob = new Blob([dataView], { type: file.type });
var fd = new FormData();
fd.append("fname", file.name);
fd.append("data", blob, file.name);
var xhr = new XMLHttpRequest();
var hex = ivToStr(random_iv);
xhr.open("post", "/upload/" + hex, true);
var li = document.createElement("li");
var name = document.createElement("p");
name.innerHTML = file.name;
li.appendChild(name);
var link = document.createElement("a");
li.appendChild(link);
var progress = document.createElement("p");
li.appendChild(progress);
document.getElementById("uploaded_files").appendChild(li);
xhr.upload.addEventListener("progress", returnBindedLI(progress, name, link, li));
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
window.crypto.subtle.exportKey("jwk", key).then(function(keydata) {
var curr_name = localStorage.getItem(file.name);
localStorage.setItem(hex, xhr.responseText);
link.innerHTML = "http://localhost:3000/download/" + hex + "/#" + keydata.k;
link.setAttribute("href", "http://localhost:3000/download/" + hex + "/#" + keydata.k);
console.log("Share this link with a friend: http://localhost:3000/download/" + hex + "/#" + keydata.k);
})
}
};
xhr.send(fd);
})
.catch(function(err){
console.error(err);
});
})
.catch(function(err){
console.error(err);
});
};
reader.readAsArrayBuffer(file);
}
function ivToStr(iv) {
let hexStr = "";
for (var i in iv) {
if (iv[i] < 16) {
hexStr += "0" + iv[i].toString(16);
} else {
hexStr += iv[i].toString(16);
}
}
window.hexStr = hexStr;
return hexStr;
}
function strToIv(str) {
var iv = new Uint8Array(16);
for (var i = 0; i < str.length; i += 2) {
iv[i/2] = parseInt((str.charAt(i) + str.charAt(i + 1)), 16);
}
return iv;
}
function returnBindedLI(a_element, name, link, li) {
return function updateProgress(e) {
if (e.lengthComputable) {
var percentComplete = Math.floor((e.loaded / e.total) * 100);
a_element.innerHTML = "Progress: " + percentComplete + "%";
if (percentComplete === 100) {
var btn = document.createElement("button");
btn.innerHTML = "Delete from server";
btn.addEventListener("click", function() {
var segments = link.innerHTML.split("/");
var key = segments[segments.length - 2];
var xhr = new XMLHttpRequest();
xhr.open("post", "/delete/" + key, true);
xhr.setRequestHeader("Content-Type", "application/json");
if (!localStorage.getItem(key)) return;
xhr.send(JSON.stringify({delete_token: localStorage.getItem(key)}));
xhr.onreadystatechange = function() {
if (xhr.readyState === XMLHttpRequest.DONE) {
document.getElementById("uploaded_files").removeChild(li);
localStorage.removeItem(key);
}
if (xhr.status === 200) {
console.log("The file was successfully deleted.");
} else {
console.log("The file has expired, or has already been deleted.");
}
}
});
li.appendChild(btn);
}
}
}
}