Sharkey/src/api/streaming.ts

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import * as http from 'http';
import * as websocket from 'websocket';
import * as redis from 'redis';
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import config from '../conf';
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import { default as User, IUser } from './models/user';
import AccessToken from './models/access-token';
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import isNativeToken from './common/is-native-token';
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import homeStream from './stream/home';
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import driveStream from './stream/drive';
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import messagingStream from './stream/messaging';
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import messagingIndexStream from './stream/messaging-index';
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import serverStream from './stream/server';
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import requestsStream from './stream/requests';
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import channelStream from './stream/channel';
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module.exports = (server: http.Server) => {
/**
* Init websocket server
*/
const ws = new websocket.server({
httpServer: server
});
ws.on('request', async (request) => {
const connection = request.accept();
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if (request.resourceURL.pathname === '/server') {
serverStream(request, connection);
return;
}
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if (request.resourceURL.pathname === '/requests') {
requestsStream(request, connection);
return;
}
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// Connect to Redis
const subscriber = redis.createClient(
config.redis.port, config.redis.host);
connection.on('close', () => {
subscriber.unsubscribe();
subscriber.quit();
});
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if (request.resourceURL.pathname === '/channel') {
channelStream(request, connection, subscriber);
return;
}
const user = await authenticate(request.resourceURL.query.i);
if (user == null) {
connection.send('authentication-failed');
connection.close();
return;
}
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const channel =
request.resourceURL.pathname === '/' ? homeStream :
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request.resourceURL.pathname === '/drive' ? driveStream :
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request.resourceURL.pathname === '/messaging' ? messagingStream :
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request.resourceURL.pathname === '/messaging-index' ? messagingIndexStream :
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null;
if (channel !== null) {
channel(request, connection, subscriber, user);
} else {
connection.close();
}
});
};
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/**
*
* @param token
*/
function authenticate(token: string): Promise<IUser> {
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if (token == null) {
return Promise.resolve(null);
}
return new Promise(async (resolve, reject) => {
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if (isNativeToken(token)) {
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// Fetch user
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const user: IUser = await User
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.findOne({
token: token
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});
resolve(user);
} else {
const accessToken = await AccessToken.findOne({
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hash: token
});
if (accessToken == null) {
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return reject('invalid signature');
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}
// Fetch user
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const user: IUser = await User
.findOne({ _id: accessToken.user_id });
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resolve(user);
}
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});
}