@uppy/companion/lib/server/controllers/url.js

OAuth helper and remote fetcher for Uppy's (https://uppy.io) extensible file upload widget with support for drag&drop, resumable uploads, previews, restrictions, file processing/encoding, remote providers like Dropbox and Google Drive, S3 and more :dog:

"use strict";
const express = require('express');
const { startDownUpload } = require('../helpers/upload');
const { downloadURL } = require('../download');
const { validateURL } = require('../helpers/request');
const { getURLMeta } = require('../helpers/request');
const logger = require('../logger');
const { respondWithError } = require('../provider/error');
/**
 * @callback downloadCallback
 * @param {Error} err
 * @param {string | Buffer | Buffer[]} chunk
 */
/**
 * Fetches the size and content type of a URL
 *
 * @param {object} req expressJS request object
 * @param {object} res expressJS response object
 */
const meta = async (req, res) => {
    try {
        logger.debug('URL file import handler running', null, req.id);
        const { allowLocalUrls } = req.companion.options;
        if (!validateURL(req.body.url, allowLocalUrls)) {
            logger.debug('Invalid request body detected. Exiting url meta handler.', null, req.id);
            res.status(400).json({ error: 'Invalid request body' });
            return;
        }
        const urlMeta = await getURLMeta(req.body.url, allowLocalUrls);
        res.json(urlMeta);
    }
    catch (err) {
        logger.error(err, 'controller.url.meta.error', req.id);
        if (respondWithError(err, res))
            return;
        res.status(500).json({ message: 'failed to fetch URL metadata' });
    }
};
/**
 * Handles the reques of import a file from a remote URL, and then
 * subsequently uploading it to the specified destination.
 *
 * @param {object} req expressJS request object
 * @param {object} res expressJS response object
 */
const get = async (req, res) => {
    logger.debug('URL file import handler running', null, req.id);
    const { allowLocalUrls } = req.companion.options;
    if (!validateURL(req.body.url, allowLocalUrls)) {
        logger.debug('Invalid request body detected. Exiting url import handler.', null, req.id);
        res.status(400).json({ error: 'Invalid request body' });
        return;
    }
    const download = () => downloadURL(req.body.url, allowLocalUrls, req.id);
    try {
        await startDownUpload({ req, res, download, getSize: undefined });
    }
    catch (err) {
        logger.error(err, 'controller.url.error', req.id);
        if (respondWithError(err, res))
            return;
        res.status(500).json({ message: 'failed to fetch URL' });
    }
};
module.exports = () => express
    .Router()
    .post('/meta', express.json(), meta)
    .post('/get', express.json(), get);