fox-send/server/routes/ws.js

91 lines
2.4 KiB
JavaScript
Raw Normal View History

2018-06-21 00:05:33 +00:00
const crypto = require('crypto');
const storage = require('../storage');
const config = require('../config');
const mozlog = require('../log');
const Limiter = require('../limiter');
2018-06-25 18:26:48 +00:00
const Parser = require('../streamparser');
2018-06-21 00:05:33 +00:00
const wsStream = require('websocket-stream/stream');
const log = mozlog('send.upload');
module.exports = async function(ws, req) {
let fileStream;
2018-06-21 20:57:53 +00:00
ws.on('close', e => {
2018-06-22 20:17:23 +00:00
if (e !== 1000 && fileStream !== undefined) {
fileStream.destroy();
2018-06-21 20:57:53 +00:00
}
});
2018-06-21 00:05:33 +00:00
2018-06-25 17:57:52 +00:00
ws.once('message', async function(message) {
2018-06-21 20:57:53 +00:00
try {
2018-06-25 17:57:52 +00:00
const newId = crypto.randomBytes(5).toString('hex');
const owner = crypto.randomBytes(10).toString('hex');
2018-06-21 00:05:33 +00:00
2018-06-25 17:57:52 +00:00
const fileInfo = JSON.parse(message);
2018-08-08 18:07:09 +00:00
const timeLimit = fileInfo.timeLimit;
2018-06-25 17:57:52 +00:00
const metadata = fileInfo.fileMetadata;
const auth = fileInfo.authorization;
2018-06-21 00:05:33 +00:00
2018-08-08 18:07:09 +00:00
if (
!metadata ||
!auth ||
timeLimit <= 0 ||
timeLimit > config.max_expire_seconds
) {
2018-06-21 00:05:33 +00:00
ws.send(
JSON.stringify({
2018-06-25 17:57:52 +00:00
error: 400
2018-06-21 00:05:33 +00:00
})
);
2018-06-25 17:57:52 +00:00
return ws.close();
2018-06-21 00:05:33 +00:00
}
2018-06-25 17:57:52 +00:00
const meta = {
owner,
metadata,
auth: auth.split(' ')[1],
nonce: crypto.randomBytes(16).toString('base64')
};
const protocol = config.env === 'production' ? 'https' : req.protocol;
const url = `${protocol}://${req.get('host')}/download/${newId}/`;
const limiter = new Limiter(config.max_file_size);
2018-06-25 18:26:48 +00:00
const parser = new Parser();
fileStream = wsStream(ws, { binary: true })
.pipe(limiter)
.pipe(parser);
2018-08-08 18:07:09 +00:00
await storage.set(newId, fileStream, meta, timeLimit);
2018-06-25 17:57:52 +00:00
2018-06-25 21:01:08 +00:00
if (ws.readyState === 1) {
// if the socket is closed by a cancelled upload the stream
// ends without an error so we need to check the state
// before sending a reply.
2018-06-25 18:52:29 +00:00
2018-06-25 21:01:08 +00:00
// TODO: we should handle cancelled uploads differently
// in order to avoid having to check socket state and clean
// up storage, possibly with an exception that we can catch.
ws.send(
JSON.stringify({
url,
owner: meta.owner,
id: newId,
authentication: `send-v1 ${meta.nonce}`
})
);
}
2018-06-21 20:57:53 +00:00
} catch (e) {
log.error('upload', e);
2018-06-25 21:01:08 +00:00
if (ws.readyState === 1) {
ws.send(
JSON.stringify({
error: e === 'limit' ? 413 : 500
})
);
ws.close();
}
2018-06-21 20:57:53 +00:00
}
});
2018-06-21 00:05:33 +00:00
};