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ass/routers/upload.js

111 lines
4.6 KiB

const fs = require('fs-extra');
const marked = require('marked');
const { DateTime } = require('luxon');
const { WebhookClient, MessageEmbed } = require('discord.js');
const { doUpload, processUploaded } = require('../storage');
const { maxUploadSize, resourceIdSize, gfyIdSize, resourceIdType } = require('../config.json');
const { path, saveData, log, verify, getTrueHttp, getTrueDomain, generateId, formatBytes } = require('../utils');
const { CODE_UNAUTHORIZED, CODE_PAYLOAD_TOO_LARGE } = require('../MagicNumbers.json');
const data = require('../data');
const users = require('../auth');
const ASS_LOGO = 'https://cdn.discordapp.com/icons/848274994375294986/8d339d4a2f3f54b2295e5e0ff62bd9e6.png?size=1024';
const express = require('express');
const router = express.Router();
// Index
router.get('/', (_req, res, next) =>
fs.readFile(path('README.md'))
.then((bytes) => bytes.toString())
.then(marked)
.then((d) => res.render('index', { data: d }))
.catch(next));
// Block unauthorized requests and attempt token sanitization
router.post('/', (req, res, next) => {
req.headers.authorization = req.headers.authorization || '';
req.token = req.headers.authorization.replace(/[^\da-z]/gi, ''); // Strip anything that isn't a digit or ASCII letter
!verify(req, users) ? res.sendStatus(CODE_UNAUTHORIZED) : next(); // skipcq: JS-0093
});
// Upload file
router.post('/', doUpload, processUploaded, ({ next }) => next());
router.use('/', (err, _req, res, next) => err.code && err.code === 'LIMIT_FILE_SIZE' ? res.status(CODE_PAYLOAD_TOO_LARGE).send(`Max upload size: ${maxUploadSize}MB`) : next(err)); // skipcq: JS-0229
// Process uploaded file
router.post('/', (req, res) => {
// Load overrides
const trueDomain = getTrueDomain(req.headers['x-ass-domain']);
const generator = req.headers['x-ass-access'] || resourceIdType;
// Get the uploaded time in milliseconds
req.file.timestamp = DateTime.now().toMillis();
// Keep track of the token that uploaded the resource
req.file.token = req.token;
// Attach any embed overrides, if necessary
req.file.opengraph = {
title: req.headers['x-ass-og-title'],
description: req.headers['x-ass-og-description'],
author: req.headers['x-ass-og-author'],
authorUrl: req.headers['x-ass-og-author-url'],
provider: req.headers['x-ass-og-provider'],
providerUrl: req.headers['x-ass-og-provider-url'],
color: req.headers['x-ass-og-color']
};
// Save the file information
const resourceId = generateId(generator, resourceIdSize, req.headers['x-ass-gfycat'] || gfyIdSize, req.file.originalname);
data[resourceId.split('.')[0]] = req.file;
saveData(data);
// Log the upload
const logInfo = `${req.file.originalname} (${req.file.mimetype})`;
log(`Uploaded: ${logInfo} (user: ${users[req.token] ? users[req.token].username : '<token-only>'})`);
// Build the URLs
const resourceUrl = `${getTrueHttp()}${trueDomain}/${resourceId}`;
const thumbnailUrl = `${getTrueHttp()}${trueDomain}/${resourceId}/thumbnail`;
const deleteUrl = `${getTrueHttp()}${trueDomain}/${resourceId}/delete/${req.file.deleteId}`;
// Send the response
res.type('json').send({ resource: resourceUrl, thumbnail: thumbnailUrl, delete: deleteUrl })
.on('finish', () => {
// After we have sent the user the response, also send a Webhook to Discord (if headers are present)
if (req.headers['x-ass-webhook-client'] && req.headers['x-ass-webhook-token']) {
// Build the webhook client & embed
const whc = new WebhookClient(req.headers['x-ass-webhook-client'], req.headers['x-ass-webhook-token']);
const embed = new MessageEmbed()
.setTitle(logInfo)
.setURL(resourceUrl)
.setDescription(`**Size:** \`${formatBytes(req.file.size)}\`\n**[Delete](${deleteUrl})**`)
.setThumbnail(thumbnailUrl)
.setColor(req.file.vibrant)
.setTimestamp(req.file.timestamp);
// Send the embed to the webhook, then delete the client after to free resources
whc.send(null, {
username: req.headers['x-ass-webhook-username'] || 'ass',
avatarURL: req.headers['x-ass-webhook-avatar'] || ASS_LOGO,
embeds: [embed]
}).then(() => whc.destroy());
}
// Also update the users upload count
if (!users[req.token]) {
const generateUsername = () => generateId('random', 20, null); // skipcq: JS-0074
let username = generateUsername();
while (Object.values(users).findIndex((user) => user.username === username) !== -1) // skipcq: JS-0073
username = generateUsername();
users[req.token] = { username, count: 0 };
}
users[req.token].count += 1;
fs.writeJsonSync(path('auth.json'), { users }, { spaces: 4 })
});
});
module.exports = router;