file list ui

This commit is contained in:
Daniela Arcese 2017-06-02 16:56:32 -04:00
parent 292ff8c27f
commit f56961b245
1 changed files with 147 additions and 0 deletions

147
public/upload.js Normal file
View File

@ -0,0 +1,147 @@
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 row = document.createElement("tr");
var name = document.createElement("td");
var link = document.createElement("td");
var expiry = document.createElement("td");
var cellText = document.createTextNode(file.name);
//name.innerHTML = file.name;
name.appendChild(cellText);
var progress = document.createElement("p");
//li.appendChild(progress);
row.appendChild(name);
row.appendChild(link);
row.appendChild(expiry);
document.getElementById("uploaded-files").appendChild(row);
xhr.upload.addEventListener("progress", returnBindedLI(progress, name, link, row));
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 del = document.createElement("td");
var btn = document.createElement("button");
btn.innerHTML = "x";
btn.style = "padding: 0; border: none; background: none; cursor: pointer"
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.");
}
}
});
del.appendChild(btn);
li.appendChild(del);
}
}
}
}