/**
* @typedef {object} PathItem
* @property {"Dir"|"SymlinkDir"|"File"|"SymlinkFile"} path_type
* @property {string} name
* @property {number} mtime
* @property {number} size
*/
/**
* @typedef {object} DATA
* @property {string} href
* @property {string} uri_prefix
* @property {"Index" | "Edit" | "View"} kind
* @property {PathItem[]} paths
* @property {boolean} allow_upload
* @property {boolean} allow_delete
* @property {boolean} allow_search
* @property {boolean} allow_archive
* @property {boolean} auth
* @property {string} user
* @property {boolean} dir_exists
* @property {string} editable
*/
var DUFS_MAX_UPLOADINGS = 1;
/**
* @type {DATA} DATA
*/
var DATA;
/**
* @type {string}
*/
var DIR_EMPTY_NOTE;
/**
* @type {PARAMS}
* @typedef {object} PARAMS
* @property {string} q
* @property {string} sort
* @property {string} order
*/
const PARAMS = Object.fromEntries(new URLSearchParams(window.location.search).entries());
const IFRAME_FORMATS = [
".pdf",
".jpg", ".jpeg", ".png", ".gif", ".bmp", ".svg",
".mp4", ".mov", ".avi", ".wmv", ".flv", ".webm",
".mp3", ".ogg", ".wav", ".m4a",
];
const ICONS = {
dir: ``,
symlinkFile: ``,
symlinkDir: ``,
file: ``,
download: ``,
move: ``,
edit: ``,
delete: ``,
view: ``,
}
/**
* @type Map
*/
const failUploaders = new Map();
/**
* @type Element
*/
let $pathsTable;
/**
* @type Element
*/
let $pathsTableHead;
/**
* @type Element
*/
let $pathsTableBody;
/**
* @type Element
*/
let $uploadersTable;
/**
* @type Element
*/
let $emptyFolder;
/**
* @type Element
*/
let $editor;
/**
* @type Element
*/
let $loginBtn;
/**
* @type Element
*/
let $logoutBtn;
/**
* @type Element
*/
let $userName;
// Produce table when window loads
window.addEventListener("DOMContentLoaded", async () => {
const $indexData = document.getElementById('index-data');
if (!$indexData) {
alert("No data");
return;
}
DATA = JSON.parse(decodeBase64($indexData.innerHTML));
DIR_EMPTY_NOTE = PARAMS.q ? 'No results' : DATA.dir_exists ? 'Empty folder' : 'Folder will be created when a file is uploaded';
await ready();
});
async function ready() {
$pathsTable = document.querySelector(".paths-table");
$pathsTableHead = document.querySelector(".paths-table thead");
$pathsTableBody = document.querySelector(".paths-table tbody");
$uploadersTable = document.querySelector(".uploaders-table");
$emptyFolder = document.querySelector(".empty-folder");
$editor = document.querySelector(".editor");
$loginBtn = document.querySelector(".login-btn");
$logoutBtn = document.querySelector(".logout-btn");
$userName = document.querySelector(".user-name");
addBreadcrumb(DATA.href, DATA.uri_prefix);
if (DATA.kind === "Index") {
document.title = `Index of ${DATA.href} - Dufs`;
document.querySelector(".index-page").classList.remove("hidden");
await setupIndexPage();
} else if (DATA.kind === "Edit") {
document.title = `Edit ${DATA.href} - Dufs`;
document.querySelector(".editor-page").classList.remove("hidden");
await setupEditorPage();
} else if (DATA.kind === "View") {
document.title = `View ${DATA.href} - Dufs`;
document.querySelector(".editor-page").classList.remove("hidden");
await setupEditorPage();
}
}
class Uploader {
/**
*
* @param {File} file
* @param {string[]} pathParts
*/
constructor(file, pathParts) {
/**
* @type Element
*/
this.$uploadStatus = null
this.uploaded = 0;
this.uploadOffset = 0;
this.lastUptime = 0;
this.name = [...pathParts, file.name].join("/");
this.idx = Uploader.globalIdx++;
this.file = file;
this.url = newUrl(this.name);
}
upload() {
const { idx, name, url } = this;
const encodedName = encodedStr(name);
$uploadersTable.insertAdjacentHTML("beforeend", `
|
${getPathSvg()}
|
${encodedName}
|
|
`);
$uploadersTable.classList.remove("hidden");
$emptyFolder.classList.add("hidden");
this.$uploadStatus = document.getElementById(`uploadStatus${idx}`);
this.$uploadStatus.innerHTML = '-';
this.$uploadStatus.addEventListener("click", e => {
const nodeId = e.target.id;
const matches = /^retry(\d+)$/.exec(nodeId);
if (matches) {
const id = parseInt(matches[1]);
let uploader = failUploaders.get(id);
if (uploader) uploader.retry();
}
});
Uploader.queues.push(this);
Uploader.runQueue();
}
ajax() {
const { url } = this;
this.uploaded = 0;
this.lastUptime = Date.now();
const ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", e => this.progress(e), false);
ajax.addEventListener("readystatechange", () => {
if (ajax.readyState === 4) {
if (ajax.status >= 200 && ajax.status < 300) {
this.complete();
} else {
if (ajax.status != 0) {
this.fail(`${ajax.status} ${ajax.statusText}`);
}
}
}
})
ajax.addEventListener("error", () => this.fail(), false);
ajax.addEventListener("abort", () => this.fail(), false);
if (this.uploadOffset > 0) {
ajax.open("PATCH", url);
ajax.setRequestHeader("X-Update-Range", "append");
ajax.send(this.file.slice(this.uploadOffset));
} else {
ajax.open("PUT", url);
ajax.send(this.file);
// setTimeout(() => ajax.abort(), 3000);
}
}
async retry() {
const { url } = this;
let res = await fetch(url, {
method: "HEAD",
});
let uploadOffset = 0;
if (res.status == 200) {
let value = res.headers.get("content-length");
uploadOffset = parseInt(value) || 0;
}
this.uploadOffset = uploadOffset;
this.ajax();
}
progress(event) {
const now = Date.now();
const speed = (event.loaded - this.uploaded) / (now - this.lastUptime) * 1000;
const [speedValue, speedUnit] = formatSize(speed);
const speedText = `${speedValue} ${speedUnit}/s`;
const progress = formatPercent(((event.loaded + this.uploadOffset) / this.file.size) * 100);
const duration = formatDuration((event.total - event.loaded) / speed);
this.$uploadStatus.innerHTML = `${speedText}${progress} ${duration}`;
this.uploaded = event.loaded;
this.lastUptime = now;
}
complete() {
const $uploadStatusNew = this.$uploadStatus.cloneNode(true);
$uploadStatusNew.innerHTML = `✓`;
this.$uploadStatus.parentNode.replaceChild($uploadStatusNew, this.$uploadStatus);
this.$uploadStatus = null;
failUploaders.delete(this.idx);
Uploader.runnings--;
Uploader.runQueue();
}
fail(reason = "") {
this.$uploadStatus.innerHTML = `✗↻`;
failUploaders.set(this.idx, this);
Uploader.runnings--;
Uploader.runQueue();
}
}
Uploader.globalIdx = 0;
Uploader.runnings = 0;
Uploader.auth = false;
/**
* @type Uploader[]
*/
Uploader.queues = [];
Uploader.runQueue = async () => {
if (Uploader.runnings >= DUFS_MAX_UPLOADINGS) return;
if (Uploader.queues.length == 0) return;
Uploader.runnings++;
let uploader = Uploader.queues.shift();
if (!Uploader.auth) {
Uploader.auth = true;
try {
await checkAuth();
} catch {
Uploader.auth = false;
}
}
uploader.ajax();
}
/**
* Add breadcrumb
* @param {string} href
* @param {string} uri_prefix
*/
function addBreadcrumb(href, uri_prefix) {
const $breadcrumb = document.querySelector(".breadcrumb");
let parts = [];
if (href === "/") {
parts = [""];
} else {
parts = href.split("/");
}
const len = parts.length;
let path = uri_prefix;
for (let i = 0; i < len; i++) {
const name = parts[i];
if (i > 0) {
if (!path.endsWith("/")) {
path += "/";
}
path += encodeURIComponent(name);
}
const encodedName = encodedStr(name);
if (i === 0) {
$breadcrumb.insertAdjacentHTML("beforeend", ``);
} else if (i === len - 1) {
$breadcrumb.insertAdjacentHTML("beforeend", `${encodedName}`);
} else {
$breadcrumb.insertAdjacentHTML("beforeend", `${encodedName}`);
}
if (i !== len - 1) {
$breadcrumb.insertAdjacentHTML("beforeend", `/`);
}
}
}
async function setupIndexPage() {
if (DATA.allow_archive) {
const $download = document.querySelector(".download");
$download.href = baseUrl() + "?zip";
$download.title = "Download folder as a .zip file";
$download.classList.remove("hidden");
}
if (DATA.allow_upload) {
setupDropzone();
setupUploadFile();
setupNewFolder();
setupNewFile();
}
if (DATA.auth) {
await setupAuth();
}
if (DATA.allow_search) {
setupSearch();
}
renderPathsTableHead();
renderPathsTableBody();
}
/**
* Render path table thead
*/
function renderPathsTableHead() {
const headerItems = [
{
name: "name",
props: `colspan="2"`,
text: "Name",
},
{
name: "mtime",
props: ``,
text: "Last Modified",
},
{
name: "size",
props: ``,
text: "Size",
}
];
$pathsTableHead.insertAdjacentHTML("beforeend", `
${headerItems.map(item => {
let svg = ``;
let order = "desc";
if (PARAMS.sort === item.name) {
if (PARAMS.order === "desc") {
order = "asc";
svg = ``
} else {
svg = ``
}
}
const qs = new URLSearchParams({ ...PARAMS, order, sort: item.name }).toString();
const icon = `${svg}`
return `| ${item.text}${icon} | `
}).join("\n")}
Actions |
`);
}
/**
* Render path table tbody
*/
function renderPathsTableBody() {
if (DATA.paths && DATA.paths.length > 0) {
const len = DATA.paths.length;
if (len > 0) {
$pathsTable.classList.remove("hidden");
}
for (let i = 0; i < len; i++) {
addPath(DATA.paths[i], i);
}
} else {
$emptyFolder.textContent = DIR_EMPTY_NOTE;
$emptyFolder.classList.remove("hidden");
}
}
/**
* Add pathitem
* @param {PathItem} file
* @param {number} index
*/
function addPath(file, index) {
const encodedName = encodedStr(file.name);
let url = newUrl(file.name);
let actionDelete = "";
let actionDownload = "";
let actionMove = "";
let actionEdit = "";
let actionView = "";
let isDir = file.path_type.endsWith("Dir");
if (isDir) {
url += "/";
if (DATA.allow_archive) {
actionDownload = `
`;
}
} else {
actionDownload = `
`;
}
if (DATA.allow_delete) {
if (DATA.allow_upload) {
actionMove = `${ICONS.move}
`;
if (!isDir) {
actionEdit = `${ICONS.edit}`;
}
}
actionDelete = `
${ICONS.delete}
`;
}
if (!actionEdit && !isDir) {
actionView = `${ICONS.view}`;
}
let actionCell = `
${actionDownload}
${actionView}
${actionMove}
${actionDelete}
${actionEdit}
| `;
let sizeDisplay = isDir ? `${file.size} ${file.size === 1 ? "item" : "items"}` : formatSize(file.size).join(" ");
$pathsTableBody.insertAdjacentHTML("beforeend", `
|
${getPathSvg(file.path_type)}
|
${encodedName}
|
${formatMtime(file.mtime)} |
${sizeDisplay} |
${actionCell}
`);
}
function setupDropzone() {
["drag", "dragstart", "dragend", "dragover", "dragenter", "dragleave", "drop"].forEach(name => {
document.addEventListener(name, e => {
e.preventDefault();
e.stopPropagation();
});
});
document.addEventListener("drop", async e => {
if (!e.dataTransfer.items[0].webkitGetAsEntry) {
const files = Array.from(e.dataTransfer.files).filter(v => v.size > 0);
for (const file of files) {
new Uploader(file, []).upload();
}
} else {
const entries = [];
const len = e.dataTransfer.items.length;
for (let i = 0; i < len; i++) {
entries.push(e.dataTransfer.items[i].webkitGetAsEntry());
}
addFileEntries(entries, []);
}
});
}
async function setupAuth() {
if (DATA.user) {
$logoutBtn.classList.remove("hidden");
$logoutBtn.addEventListener("click", logout);
$userName.textContent = DATA.user;
} else {
$loginBtn.classList.remove("hidden");
$loginBtn.addEventListener("click", async () => {
try {
await checkAuth();
} catch {}
location.reload();
});
}
}
function setupSearch() {
const $searchbar = document.querySelector(".searchbar");
$searchbar.classList.remove("hidden");
$searchbar.addEventListener("submit", event => {
event.preventDefault();
const formData = new FormData($searchbar);
const q = formData.get("q");
let href = baseUrl();
if (q) {
href += "?q=" + q;
}
location.href = href;
});
if (PARAMS.q) {
document.getElementById('search').value = PARAMS.q;
}
}
function setupUploadFile() {
document.querySelector(".upload-file").classList.remove("hidden");
document.getElementById("file").addEventListener("change", async e => {
const files = e.target.files;
for (let file of files) {
new Uploader(file, []).upload();
}
});
}
function setupNewFolder() {
const $newFolder = document.querySelector(".new-folder");
$newFolder.classList.remove("hidden");
$newFolder.addEventListener("click", () => {
const name = prompt("Enter folder name");
if (name) createFolder(name);
});
}
function setupNewFile() {
const $newFile = document.querySelector(".new-file");
$newFile.classList.remove("hidden");
$newFile.addEventListener("click", () => {
const name = prompt("Enter file name");
if (name) createFile(name);
});
}
async function setupEditorPage() {
const url = baseUrl();
const $download = document.querySelector(".download");
$download.classList.remove("hidden");
$download.href = url;
if (DATA.kind == "Edit") {
const $moveFile = document.querySelector(".move-file");
$moveFile.classList.remove("hidden");
$moveFile.addEventListener("click", async () => {
const query = location.href.slice(url.length);
const newFileUrl = await doMovePath(url);
if (newFileUrl) {
location.href = newFileUrl + query;
}
});
const $deleteFile = document.querySelector(".delete-file");
$deleteFile.classList.remove("hidden");
$deleteFile.addEventListener("click", async () => {
const url = baseUrl();
const name = baseName(url);
await doDeletePath(name, url, () => {
location.href = location.href.split("/").slice(0, -1).join("/");
});
});
if (DATA.editable) {
const $saveBtn = document.querySelector(".save-btn");
$saveBtn.classList.remove("hidden");
$saveBtn.addEventListener("click", saveChange);
}
} else if (DATA.kind == "View") {
$editor.readonly = true;
}
if (!DATA.editable) {
const $notEditable = document.querySelector(".not-editable");
const url = baseUrl();
const ext = extName(baseName(url));
if (IFRAME_FORMATS.find(v => v === ext)) {
$notEditable.insertAdjacentHTML("afterend", ``);
} else {
$notEditable.classList.remove("hidden");
$notEditable.textContent = "Cannot edit because file is too large or binary.";
}
return;
}
$editor.classList.remove("hidden");
try {
const res = await fetch(baseUrl());
await assertResOK(res);
const encoding = getEncoding(res.headers.get("content-type"));
if (encoding === "utf-8") {
$editor.value = await res.text();
} else {
const bytes = await res.arrayBuffer();
const dataView = new DataView(bytes);
const decoder = new TextDecoder(encoding);
$editor.value = decoder.decode(dataView);
}
} catch (err) {
alert(`Failed get file, ${err.message}`);
}
}
/**
* Delete path
* @param {number} index
* @returns
*/
async function deletePath(index) {
const file = DATA.paths[index];
if (!file) return;
await doDeletePath(file.name, newUrl(file.name), () => {
document.getElementById(`addPath${index}`)?.remove();
DATA.paths[index] = null;
if (!DATA.paths.find(v => !!v)) {
$pathsTable.classList.add("hidden");
$emptyFolder.textContent = DIR_EMPTY_NOTE;
$emptyFolder.classList.remove("hidden");
}
});
}
async function doDeletePath(name, url, cb) {
if (!confirm(`Delete \`${name}\`?`)) return;
try {
await checkAuth();
const res = await fetch(url, {
method: "DELETE",
});
await assertResOK(res);
cb();
} catch (err) {
alert(`Cannot delete \`${file.name}\`, ${err.message}`);
}
}
/**
* Move path
* @param {number} index
* @returns
*/
async function movePath(index) {
const file = DATA.paths[index];
if (!file) return;
const fileUrl = newUrl(file.name);
const newFileUrl = await doMovePath(fileUrl);
if (newFileUrl) {
location.href = newFileUrl.split("/").slice(0, -1).join("/");
}
}
async function doMovePath(fileUrl) {
const fileUrlObj = new URL(fileUrl);
const prefix = DATA.uri_prefix.slice(0, -1);
const filePath = decodeURIComponent(fileUrlObj.pathname.slice(prefix.length));
let newPath = prompt("Enter new path", filePath);
if (!newPath) return;
if (!newPath.startsWith("/")) newPath = "/" + newPath;
if (filePath === newPath) return;
const newFileUrl = fileUrlObj.origin + prefix + newPath.split("/").map(encodeURIComponent).join("/");
try {
await checkAuth();
const res1 = await fetch(newFileUrl, {
method: "HEAD",
});
if (res1.status === 200) {
if (!confirm("Override existing file?")) {
return;
}
}
const res2 = await fetch(fileUrl, {
method: "MOVE",
headers: {
"Destination": newFileUrl,
}
});
await assertResOK(res2);
return newFileUrl;
} catch (err) {
alert(`Cannot move \`${filePath}\` to \`${newPath}\`, ${err.message}`);
}
}
/**
* Save editor change
*/
async function saveChange() {
try {
await fetch(baseUrl(), {
method: "PUT",
body: $editor.value,
});
location.reload();
} catch (err) {
alert(`Failed to save file, ${err.message}`);
}
}
async function checkAuth() {
if (!DATA.auth) return;
const res = await fetch(baseUrl(), {
method: "CHECKAUTH",
});
await assertResOK(res);
$loginBtn.classList.add("hidden");
$logoutBtn.classList.remove("hidden");
$userName.textContent = await res.text();
}
function logout() {
if (!DATA.auth) return;
const url = baseUrl();
const xhr = new XMLHttpRequest();
xhr.open("LOGOUT", url, true, DATA.user);
xhr.onload = () => {
location.href = url;
}
xhr.send();
}
/**
* Create a folder
* @param {string} name
*/
async function createFolder(name) {
const url = newUrl(name);
try {
await checkAuth();
const res = await fetch(url, {
method: "MKCOL",
});
await assertResOK(res);
location.href = url;
} catch (err) {
alert(`Cannot create folder \`${name}\`, ${err.message}`);
}
}
async function createFile(name) {
const url = newUrl(name);
try {
await checkAuth();
const res = await fetch(url, {
method: "PUT",
body: "",
});
await assertResOK(res);
location.href = url + "?edit";
} catch (err) {
alert(`Cannot create file \`${name}\`, ${err.message}`);
}
}
async function addFileEntries(entries, dirs) {
for (const entry of entries) {
if (entry.isFile) {
entry.file(file => {
new Uploader(file, dirs).upload();
});
} else if (entry.isDirectory) {
const dirReader = entry.createReader();
const successCallback = entries => {
if (entries.length > 0) {
addFileEntries(entries, [...dirs, entry.name]);
dirReader.readEntries(successCallback);
}
};
dirReader.readEntries(successCallback);
}
}
}
function newUrl(name) {
let url = baseUrl();
if (!url.endsWith("/")) url += "/";
url += name.split("/").map(encodeURIComponent).join("/");
return url;
}
function baseUrl() {
return location.href.split('?')[0];
}
function baseName(url) {
return decodeURIComponent(url.split("/").filter(v => v.length > 0).slice(-1)[0]);
}
function extName(filename) {
const dotIndex = filename.lastIndexOf('.');
if (dotIndex === -1 || dotIndex === 0 || dotIndex === filename.length - 1) {
return '';
}
return filename.substring(dotIndex);
}
function getPathSvg(path_type) {
switch (path_type) {
case "Dir":
return ICONS.dir;
case "SymlinkFile":
return ICONS.symlinkFile;
case "SymlinkDir":
return ICONS.symlinkDir;
default:
return ICONS.file;
}
}
function formatMtime(mtime) {
if (!mtime) return "";
const date = new Date(mtime);
const year = date.getFullYear();
const month = padZero(date.getMonth() + 1, 2);
const day = padZero(date.getDate(), 2);
const hours = padZero(date.getHours(), 2);
const minutes = padZero(date.getMinutes(), 2);
return `${year}-${month}-${day} ${hours}:${minutes}`;
}
function padZero(value, size) {
return ("0".repeat(size) + value).slice(-1 * size);
}
function formatSize(size) {
if (size == null) return [0, "B"];
const sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
if (size == 0) return [0, "B"];
const i = parseInt(Math.floor(Math.log(size) / Math.log(1024)));
let ratio = 1;
if (i >= 3) {
ratio = 100;
}
return [Math.round(size * ratio / Math.pow(1024, i), 2) / ratio, sizes[i]];
}
function formatDuration(seconds) {
seconds = Math.ceil(seconds);
const h = Math.floor(seconds / 3600);
const m = Math.floor((seconds - h * 3600) / 60);
const s = seconds - h * 3600 - m * 60;
return `${padZero(h, 2)}:${padZero(m, 2)}:${padZero(s, 2)}`;
}
function formatPercent(percent) {
if (percent > 10) {
return percent.toFixed(1) + "%";
} else {
return percent.toFixed(2) + "%";
}
}
function encodedStr(rawStr) {
return rawStr.replace(/[\u00A0-\u9999<>\&]/g, function (i) {
return '&#' + i.charCodeAt(0) + ';';
});
}
async function assertResOK(res) {
if (!(res.status >= 200 && res.status < 300)) {
throw new Error(await res.text() || `Invalid status ${res.status}`);
}
}
function getEncoding(contentType) {
const charset = contentType?.split(";")[1];
if (/charset/i.test(charset)) {
let encoding = charset.split("=")[1];
if (encoding) {
return encoding.toLowerCase();
}
}
return 'utf-8';
}
// Parsing base64 strings with Unicode characters
function decodeBase64(base64String) {
const binString = atob(base64String);
const len = binString.length;
const bytes = new Uint8Array(len);
const arr = new Uint32Array(bytes.buffer, 0, Math.floor(len / 4));
let i = 0;
for (; i < arr.length; i++) {
arr[i] = binString.charCodeAt(i * 4) |
(binString.charCodeAt(i * 4 + 1) << 8) |
(binString.charCodeAt(i * 4 + 2) << 16) |
(binString.charCodeAt(i * 4 + 3) << 24);
}
for (i = i * 4; i < len; i++) {
bytes[i] = binString.charCodeAt(i);
}
return new TextDecoder().decode(bytes);
}