try { // Check if config.json exists require('./config.json'); } catch (err) { console.error('No config.json found! Please run \'npm run setup\''); process.exit(1); } // Load the config const { host, port, domain, useSsl, resourceIdSize, resourceIdType } = require('./config.json'); //#region Imports const fs = require('fs-extra'); const uuid = require('uuid').v4; const express = require('express'); const useragent = require('express-useragent'); const multer = require('multer'); const zws = require('./idgen/zws'); const { path, saveData, log, verify, generateId } = require('./utils'); //#endregion //#region Variables, module setup const app = express(); const upload = multer({ dest: 'uploads/' }); var tokens = []; var data = {}; //#endregion preStartup(); startup(); function preStartup() { // Make sure data.json exists if (!fs.existsSync(path('data.json'))) { fs.writeJsonSync(path('data.json'), data, { spaces: 4 }); log('File [data.json] created'); } else log('File [data.json] exists'); // Make sure auth.json exists and generate the first key if (!fs.existsSync(path('auth.json'))) { tokens.push(uuid().replace(/-/g, '')); fs.writeJsonSync(path('auth.json'), { tokens }, { spaces: 4 }); log(`File [auth.json] created\n!! Important: save this token in a secure spot: ${tokens[0]}\n`); } else log('File [auth.json] exists'); // Read tokens and data tokens = fs.readJsonSync(path('auth.json')).tokens; data = fs.readJsonSync(path('data.json')); log('Tokens & data read from filesystem'); } function startup() { app.use(useragent.express()); // Upload file app.post('/', upload.single('file'), (req, res) => { // Prevent uploads from unauthorized clients if (!verify(req, tokens)) return res.sendStatus(401); log(`Uploaded: ${req.file.originalname} (${req.file.mimetype})`); // Save the file information let resourceId = generateId(resourceIdType, resourceIdSize, req.file.originalname); data[resourceId.split('.')[0]] = req.file; saveData(data); let http = ('http').concat(useSsl ? 's' : '').concat('://'); let trueDomain = domain.concat((port != 80 || port != 443) ? `:${port}` : ''); res.type('json').send({ resource: `${http}${trueDomain}/${resourceId}`, delete: `${http}${trueDomain}/delete/${req.file.filename}` }); }); // View file app.get('/:resourceId', (req, res) => { // Don't process favicon requests if (req.url.includes('favicon.ico')) return; // Parse the resource ID let resourceId = req.params.resourceId.split('.')[0]; // If the ID is invalid, return 404 if (!resourceId || !data[resourceId]) return res.sendStatus(404); // Read the file and send it to the client fs.readFile(path(data[resourceId].path)) .then((fileData) => res .header('Accept-Ranges', 'bytes') .header('Content-Length', fileData.byteLength) .type(data[resourceId].mimetype).send(fileData)) .catch(console.error); }); // Delete file app.get('/delete/:filename', (req, res) => { let filename = req.params.filename; let resourceId = Object.keys(data)[Object.values(data).indexOf(Object.values(data).find((d) => d.filename == filename))]; // If the ID is invalid, return 400 because we are unable to process the resource if (!resourceId || !data[resourceId]) return res.sendStatus(400); log(`Deleted: ${data[resourceId].originalname} (${data[resourceId].mimetype})`); // Save the file information fs.rmSync(path(data[resourceId].path)); delete data[resourceId]; saveData(data); res.type('text').send('File has been deleted!'); }) app.listen(port, host, () => log(`Server started on [${host}:${port}]\nAuthorized tokens: ${tokens.length}\nAvailable files: ${Object.keys(data).length}`)); }