31 lines
940 B
JavaScript
31 lines
940 B
JavaScript
const storage = require('../storage');
|
|
const { statDownloadEvent } = require('../amplitude');
|
|
|
|
module.exports = async function(req, res) {
|
|
try {
|
|
const id = req.params.id;
|
|
const meta = req.meta;
|
|
const ttl = await storage.ttl(id);
|
|
statDownloadEvent({
|
|
id,
|
|
ip: req.ip,
|
|
owner: meta.owner,
|
|
download_count: meta.dl,
|
|
ttl,
|
|
agent: req.ua.browser.name || req.ua.ua.substring(0, 6)
|
|
});
|
|
await storage.incrementField(id, 'dl');
|
|
if (meta.dl + 1 >= meta.dlimit) {
|
|
// Only dlimit number of tokens will be issued
|
|
// after which /download/token will return 403
|
|
// however the protocol doesn't prevent one token
|
|
// from making all the downloads and assumes
|
|
// clients are well behaved. If this becomes
|
|
// a problem we can keep track of used tokens.
|
|
await storage.kill(id);
|
|
}
|
|
res.sendStatus(200);
|
|
} catch (e) {
|
|
res.sendStatus(404);
|
|
}
|
|
};
|