drop.chapril.org-firefoxsend/server/routes/download.js
2018-08-30 22:10:08 -07:00

48 lines
1.1 KiB
JavaScript

const storage = require('../storage');
const mozlog = require('../log');
const log = mozlog('send.download');
module.exports = async function(req, res) {
const id = req.params.id;
try {
const meta = req.meta;
const contentLength = await storage.length(id);
res.writeHead(200, {
'Content-Disposition': 'attachment',
'Content-Type': 'application/octet-stream',
'Content-Length': contentLength,
'WWW-Authenticate': `send-v1 ${req.nonce}`
});
const fileStream = await storage.get(id);
let cancelled = false;
req.on('close', () => {
cancelled = true;
fileStream.destroy();
});
fileStream.on('end', async () => {
if (cancelled) {
return;
}
const dl = meta.dl + 1;
const dlimit = meta.dlimit;
try {
if (dl >= dlimit) {
await storage.del(id);
} else {
await storage.setField(id, 'dl', dl);
}
} catch (e) {
log.info('StorageError:', id);
}
});
fileStream.pipe(res);
} catch (e) {
res.sendStatus(404);
}
};