Fix ESLint errors

.eslintignore

@@ -1 +1,2 @@
 public/bundle.js
+public/webcrypto-shim.js

.eslintrc.yml

@@ -31,7 +31,7 @@ rules:
   eqeqeq: error
   no-console: warn
   no-path-concat: error
-  no-unused-vars: [error, {argsIgnorePattern: "^_|next"}]
+  no-unused-vars: [error, {argsIgnorePattern: "^_|err|event|next|reject"}]
   no-var: error
   one-var: [error, never]
   prefer-const: error

frontend/src/download.js

@@ -5,13 +5,11 @@ $(document).ready(function() {
   $('#send-file').click(() => {
     window.location.replace(`${window.location.origin}`);
   });
-  let download = () => {
+  const download = () => {
     const fileReceiver = new FileReceiver();
-
+    const name = document.createElement('p');
-    let li = document.createElement('li');
+    const progress = document.createElement('p');
-    let name = document.createElement('p');
+    const btn = $('#download-btn');
-    let progress = document.createElement('p');
-    let btn = $('#download-btn');
 
     fileReceiver.on('progress', percentComplete => {
       progress.innerText = `Progress: ${percentComplete}%`;
@@ -25,7 +23,7 @@ $(document).ready(function() {
 
     fileReceiver
       .download()
-      .catch(err => {
+      .catch(() => {
         $('.title').text(
           'This link has expired or never existed in the first place.'
         );
@@ -36,11 +34,11 @@ $(document).ready(function() {
       })
       .then(([decrypted, fname]) => {
         name.innerText = fname;
-        let dataView = new DataView(decrypted);
+        const dataView = new DataView(decrypted);
-        let blob = new Blob([dataView]);
+        const blob = new Blob([dataView]);
-        let downloadUrl = URL.createObjectURL(blob);
+        const downloadUrl = URL.createObjectURL(blob);
 
-        let a = document.createElement('a');
+        const a = document.createElement('a');
         a.href = downloadUrl;
         if (window.navigator.msSaveBlob) {
           // if we are in microsoft edge or IE

frontend/src/fileReceiver.js

@@ -10,16 +10,18 @@ class FileReceiver extends EventEmitter {
   download() {
     return Promise.all([
       new Promise((resolve, reject) => {
-        let xhr = new XMLHttpRequest();
+        const xhr = new XMLHttpRequest();
 
-        xhr.onprogress = e => {
+        xhr.onprogress = event => {
-          if (e.lengthComputable) {
+          if (event.lengthComputable) {
-            let percentComplete = Math.floor(e.loaded / e.total * 100);
+            const percentComplete = Math.floor(
+              event.loaded / event.total * 100
+            );
             this.emit('progress', percentComplete);
           }
         };
 
-        xhr.onload = function(e) {
+        xhr.onload = event => {
           if (xhr.status === 404) {
             reject(
               new Error('The file has expired, or has already been deleted.')
@@ -27,8 +29,8 @@ class FileReceiver extends EventEmitter {
             return;
           }
 
-          let blob = new Blob([this.response]);
+          const blob = new Blob([this.response]);
-          let fileReader = new FileReader();
+          const fileReader = new FileReader();
           fileReader.onload = function() {
             resolve({
               data: this.result,
@@ -60,7 +62,7 @@ class FileReceiver extends EventEmitter {
         ['encrypt', 'decrypt']
       )
     ]).then(([fdata, key]) => {
-      let salt = this.salt;
+      const salt = this.salt;
       return Promise.all([
         window.crypto.subtle.decrypt(
           {

frontend/src/fileSender.js

@@ -13,7 +13,7 @@ class FileSender extends EventEmitter {
       if (!fileId || !token) {
         return reject();
       }
-      let xhr = new XMLHttpRequest();
+      const xhr = new XMLHttpRequest();
       xhr.open('post', '/delete/' + fileId, true);
       xhr.setRequestHeader('Content-Type', 'application/json');
 
@@ -66,27 +66,27 @@ class FileSender extends EventEmitter {
       })
       .then(([encrypted, keydata]) => {
         return new Promise((resolve, reject) => {
-        let file = this.file;
+          const file = this.file;
-        let fileId = ivToStr(this.iv);
+          const fileId = ivToStr(this.iv);
-        let dataView = new DataView(encrypted);
+          const dataView = new DataView(encrypted);
-        let blob = new Blob([dataView], { type: file.type });
+          const blob = new Blob([dataView], { type: file.type });
-        let fd = new FormData();
+          const fd = new FormData();
           fd.append('fname', file.name);
           fd.append('data', blob, file.name);
 
-        let xhr = new XMLHttpRequest();
+          const xhr = new XMLHttpRequest();
 
           xhr.upload.addEventListener('progress', e => {
             if (e.lengthComputable) {
-            let percentComplete = Math.floor(e.loaded / e.total * 100);
+              const percentComplete = Math.floor(e.loaded / e.total * 100);
               this.emit('progress', percentComplete);
             }
           });
 
           xhr.onreadystatechange = () => {
-          if (xhr.readyState == XMLHttpRequest.DONE) {
+            if (xhr.readyState === XMLHttpRequest.DONE) {
               // uuid field and url field
-            let responseObj = JSON.parse(xhr.responseText);
+              const responseObj = JSON.parse(xhr.responseText);
               resolve({
                 url: responseObj.url,
                 fileId: fileId,

frontend/src/upload.js

@@ -3,7 +3,7 @@ const $ = require('jquery');
 
 $(document).ready(function() {
   // reset copy button
-  let copyBtn = $('#copy-btn');
+  const copyBtn = $('#copy-btn');
   copyBtn.attr('disabled', false);
   copyBtn.html('Copy');
 
@@ -14,7 +14,7 @@ $(document).ready(function() {
 
   // copy link to clipboard
   copyBtn.click(() => {
-    var aux = document.createElement('input');
+    const aux = document.createElement('input');
     aux.setAttribute('value', $('#link').attr('value'));
     document.body.appendChild(aux);
     aux.select();
@@ -38,22 +38,22 @@ $(document).ready(function() {
   window.onUpload = event => {
     event.preventDefault();
     let file = '';
-    if (event.type == 'drop') {
+    if (event.type === 'drop') {
       file = event.dataTransfer.files[0];
     } else {
       file = event.target.files[0];
     }
-    let $fileList = $('#uploaded-files');
+    const $fileList = $('#uploaded-files');
-    let row = document.createElement('tr');
+    const row = document.createElement('tr');
-    let name = document.createElement('td');
+    const name = document.createElement('td');
-    let link = document.createElement('td');
+    const link = document.createElement('td');
-    let expiry = document.createElement('td');
+    const expiry = document.createElement('td');
-    let del = document.createElement('td');
+    const del = document.createElement('td');
-    let btn = document.createElement('button');
+    const btn = document.createElement('button');
-    let popupDiv = document.createElement('div');
+    const popupDiv = document.createElement('div');
-    let $popupText = $('<span>', { 'class': 'popuptext' });
+    const $popupText = $('<span>', { class: 'popuptext' });
-    let cellText = document.createTextNode(file.name);
+    const cellText = document.createTextNode(file.name);
-    let progress = document.createElement('p');
+    const progress = document.createElement('p');
 
     name.appendChild(cellText);
 
@@ -64,7 +64,7 @@ $(document).ready(function() {
     // create popup
     popupDiv.classList.add('popup');
     $popupText.html(
-      "<span class='del-file'>Delete</span><span class='nvm'> Nevermind</span>"
+      '<span class="del-file">Delete</span><span class="nvm" > Nevermind</span>'
     );
 
     // add data cells to table row

frontend/src/utils.js

@@ -1,6 +1,6 @@
 function ivToStr(iv) {
   let hexStr = '';
-  for (let i in iv) {
+  for (const i in iv) {
     if (iv[i] < 16) {
       hexStr += '0' + iv[i].toString(16);
     } else {
@@ -12,7 +12,7 @@ function ivToStr(iv) {
 }
 
 function strToIv(str) {
-  let iv = new Uint8Array(16);
+  const iv = new Uint8Array(16);
   for (let i = 0; i < str.length; i += 2) {
     iv[i / 2] = parseInt(str.charAt(i) + str.charAt(i + 1), 16);
   }

public/main.css

@@ -113,7 +113,6 @@ td {
   position: relative;
   display: inline-block;
   cursor: pointer;
-
 }
 
 /* The actual popup (appears on top) */
@@ -153,7 +152,6 @@ td {
 
 /**   upload-progress   **/
 
-
 /**   share-link    **/
 .share-window {
   width: 50%;

server/config.js

@@ -1,6 +1,6 @@
 const convict = require('convict');
 
-let conf = convict({
+const conf = convict({
   bitly_key: {
     format: String,
     default: 'localhost',
@@ -32,7 +32,7 @@ let conf = convict({
 // Perform validation
 conf.validate({ allowed: 'strict' });
 
-let props = conf.getProperties();
+const props = conf.getProperties();
 module.exports = props;
 
 module.exports.notLocalHost =

server/log.js

@@ -1,12 +1,12 @@
 const conf = require('./config.js');
 
-let notLocalHost = conf.notLocalHost;
+const notLocalHost = conf.notLocalHost;
 
 const mozlog = require('mozlog')({
   app: 'FirefoxFileshare',
   level: notLocalHost ? 'INFO' : 'verbose',
   fmt: notLocalHost ? 'heka' : 'pretty',
   debug: !notLocalHost
-})
+});
 
 module.exports = mozlog;

server/portal_server.js

@@ -2,20 +2,16 @@ const express = require('express');
 const exphbs = require('express-handlebars');
 const busboy = require('connect-busboy');
 const path = require('path');
-const fs = require('fs-extra');
 const bodyParser = require('body-parser');
-const crypto = require('crypto');
-const stream = require('stream');
-const fetch = require('node-fetch');
 const bytes = require('bytes');
 const conf = require('./config.js');
 const storage = require('./storage.js');
 
-let notLocalHost = conf.notLocalHost;
+const notLocalHost = conf.notLocalHost;
 
 const mozlog = require('./log.js');
 
-let log = mozlog('portal.server');
+const log = mozlog('portal.server');
 
 const app = express();
 
@@ -32,14 +28,14 @@ app.get('/', (req, res) => {
 });
 
 app.get('/exists/:id', (req, res) => {
-  let id = req.params.id;
+  const id = req.params.id;
   storage.exists(id).then(doesExist => {
     res.sendStatus(doesExist ? 200 : 404);
   });
 });
 
 app.get('/download/:id', (req, res) => {
-  let id = req.params.id;
+  const id = req.params.id;
   storage.filename(id).then(filename => {
     storage
       .length(id)
@@ -56,7 +52,7 @@ app.get('/download/:id', (req, res) => {
 });
 
 app.get('/assets/download/:id', (req, res) => {
-  let id = req.params.id;
+  const id = req.params.id;
   if (!validateID(id)) {
     res.sendStatus(404);
     return;
@@ -71,7 +67,7 @@ app.get('/assets/download/:id', (req, res) => {
           'Content-Type': 'application/octet-stream',
           'Content-Length': contentLength
         });
-        let file_stream = storage.get(id);
+        const file_stream = storage.get(id);
 
         file_stream.on(notLocalHost ? 'finish' : 'close', () => {
           storage.forceDelete(id).then(err => {
@@ -90,14 +86,14 @@ app.get('/assets/download/:id', (req, res) => {
 });
 
 app.post('/delete/:id', (req, res) => {
-  let id = req.params.id;
+  const id = req.params.id;
 
   if (!validateID(id)) {
     res.send(404);
     return;
   }
 
-  let delete_token = req.body.delete_token;
+  const delete_token = req.body.delete_token;
 
   if (!delete_token) {
     res.sendStatus(404);
@@ -125,7 +121,7 @@ app.post('/upload/:id', (req, res, next) => {
     log.info('Uploading:', req.params.id);
 
     const protocol = notLocalHost ? 'https' : req.protocol;
-    let url = `${protocol}://${req.get('host')}/download/${req.params.id}/`;
+    const url = `${protocol}://${req.get('host')}/download/${req.params.id}/`;
 
     storage.set(req.params.id, file, filename, url).then(linkAndID => {
       res.json(linkAndID);
@@ -133,10 +129,10 @@ app.post('/upload/:id', (req, res, next) => {
   });
 });
 
-let server = app.listen(conf.listen_port, () => {
+app.listen(conf.listen_port, () => {
   log.info('startServer:', `Portal app listening on port ${conf.listen_port}!`);
 });
 
-let validateID = route_id => {
+const validateID = route_id => {
   return route_id.match(/^[0-9a-fA-F]{32}$/) !== null;
 };

server/storage.js

@@ -7,11 +7,11 @@ const path = require('path');
 const fetch = require('node-fetch');
 const crypto = require('crypto');
 
-let notLocalHost = conf.notLocalHost;
+const notLocalHost = conf.notLocalHost;
 
 const mozlog = require('./log.js');
 
-let log = mozlog('portal.storage');
+const log = mozlog('portal.storage');
 
 const redis = require('redis');
 const redis_client = redis.createClient({
@@ -67,7 +67,7 @@ function exists(id) {
 function localLength(id) {
   return new Promise((resolve, reject) => {
     try {
-      resolve(fs.statSync(__dirname + '/../static/' + id).size);
+      resolve(fs.statSync(path.join(__dirname, '../static', id)).size);
     } catch (err) {
       reject();
     }
@@ -75,15 +75,15 @@ function localLength(id) {
 }
 
 function localGet(id) {
-  return fs.createReadStream(__dirname + '/../static/' + id);
+  return fs.createReadStream(path.join(__dirname, '../static', id));
 }
 
 function localSet(id, file, filename, url) {
   return new Promise((resolve, reject) => {
-    fstream = fs.createWriteStream(__dirname + '/../static/' + id);
+    const fstream = fs.createWriteStream(path.join(__dirname, '../static', id));
     file.pipe(fstream);
     fstream.on('close', () => {
-      let uuid = crypto.randomBytes(10).toString('hex');
+      const uuid = crypto.randomBytes(10).toString('hex');
 
       redis_client.hmset([id, 'filename', filename, 'delete', uuid]);
       redis_client.expire(id, 86400000);
@@ -105,7 +105,7 @@ function localDelete(id, delete_token) {
         reject();
       } else {
         redis_client.del(id);
-        resolve(fs.unlinkSync(__dirname + '/../static/' + id));
+        resolve(fs.unlinkSync(path.join(__dirname, '../static', id)));
       }
     });
   });
@@ -114,12 +114,12 @@ function localDelete(id, delete_token) {
 function localForceDelete(id) {
   return new Promise((resolve, reject) => {
     redis_client.del(id);
-    resolve(fs.unlinkSync(__dirname + '/../static/' + id));
+    resolve(fs.unlinkSync(path.join(__dirname, '../static', id)));
   });
 }
 
 function awsLength(id) {
-  let params = {
+  const params = {
     Bucket: conf.s3_bucket,
     Key: id
   };
@@ -135,7 +135,7 @@ function awsLength(id) {
 }
 
 function awsGet(id) {
-  let params = {
+  const params = {
     Bucket: conf.s3_bucket,
     Key: id
   };
@@ -144,19 +144,19 @@ function awsGet(id) {
 }
 
 function awsSet(id, file, filename, url) {
-  let params = {
+  const params = {
     Bucket: conf.s3_bucket,
     Key: id,
     Body: file
   };
 
   return new Promise((resolve, reject) => {
-    s3.upload(params, function(err, data) {
+    s3.upload(params, function(err, _data) {
       if (err) {
         log.info('awsUploadError:', err.stack); // an error occurred
         reject();
       } else {
-        let uuid = crypto.randomBytes(10).toString('hex');
+        const uuid = crypto.randomBytes(10).toString('hex');
 
         redis_client.hmset([id, 'filename', filename, 'delete', uuid]);
 
@@ -197,12 +197,12 @@ function awsDelete(id, delete_token) {
         reject();
       } else {
         redis_client.del(id);
-        let params = {
+        const params = {
           Bucket: conf.s3_bucket,
           Key: id
         };
 
-        s3.deleteObject(params, function(err, data) {
+        s3.deleteObject(params, function(err, _data) {
           resolve(err);
         });
       }
@@ -213,12 +213,12 @@ function awsDelete(id, delete_token) {
 function awsForceDelete(id) {
   return new Promise((resolve, reject) => {
     redis_client.del(id);
-    let params = {
+    const params = {
       Bucket: conf.s3_bucket,
       Key: id
     };
 
-    s3.deleteObject(params, function(err, data) {
+    s3.deleteObject(params, function(err, _data) {
       resolve(err);
     });
   });