bc066d8936
* Fix timeline streaming stopping for multiple sessions instead of one Fixes #17256. In updating the code for a newer version of node-redis, #17183 also broke redis subscription management when multiple streaming clients subscribe to the same channel. This commit restores the redis subscription management code. * Let node-redis actually handle the subscriptions
1147 lines
30 KiB
JavaScript
1147 lines
30 KiB
JavaScript
// @ts-check
|
|
|
|
const os = require('os');
|
|
const throng = require('throng');
|
|
const dotenv = require('dotenv');
|
|
const express = require('express');
|
|
const http = require('http');
|
|
const redis = require('redis');
|
|
const pg = require('pg');
|
|
const log = require('npmlog');
|
|
const url = require('url');
|
|
const uuid = require('uuid');
|
|
const fs = require('fs');
|
|
const WebSocket = require('ws');
|
|
|
|
const env = process.env.NODE_ENV || 'development';
|
|
const alwaysRequireAuth = process.env.LIMITED_FEDERATION_MODE === 'true' || process.env.WHITELIST_MODE === 'true' || process.env.AUTHORIZED_FETCH === 'true';
|
|
|
|
dotenv.config({
|
|
path: env === 'production' ? '.env.production' : '.env',
|
|
});
|
|
|
|
log.level = process.env.LOG_LEVEL || 'verbose';
|
|
|
|
/**
|
|
* @param {string} dbUrl
|
|
* @return {Object.<string, any>}
|
|
*/
|
|
const dbUrlToConfig = (dbUrl) => {
|
|
if (!dbUrl) {
|
|
return {};
|
|
}
|
|
|
|
const params = url.parse(dbUrl, true);
|
|
const config = {};
|
|
|
|
if (params.auth) {
|
|
[config.user, config.password] = params.auth.split(':');
|
|
}
|
|
|
|
if (params.hostname) {
|
|
config.host = params.hostname;
|
|
}
|
|
|
|
if (params.port) {
|
|
config.port = params.port;
|
|
}
|
|
|
|
if (params.pathname) {
|
|
config.database = params.pathname.split('/')[1];
|
|
}
|
|
|
|
const ssl = params.query && params.query.ssl;
|
|
|
|
if (ssl && ssl === 'true' || ssl === '1') {
|
|
config.ssl = true;
|
|
}
|
|
|
|
return config;
|
|
};
|
|
|
|
/**
|
|
* @param {Object.<string, any>} defaultConfig
|
|
* @param {string} redisUrl
|
|
*/
|
|
const redisUrlToClient = async (defaultConfig, redisUrl) => {
|
|
const config = defaultConfig;
|
|
|
|
let client;
|
|
|
|
if (!redisUrl) {
|
|
client = redis.createClient(config);
|
|
} else if (redisUrl.startsWith('unix://')) {
|
|
client = redis.createClient(Object.assign(config, {
|
|
socket: {
|
|
path: redisUrl.slice(7),
|
|
},
|
|
}));
|
|
} else {
|
|
client = redis.createClient(Object.assign(config, {
|
|
url: redisUrl,
|
|
}));
|
|
}
|
|
|
|
client.on('error', (err) => log.error('Redis Client Error!', err));
|
|
await client.connect();
|
|
|
|
return client;
|
|
};
|
|
|
|
const numWorkers = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1));
|
|
|
|
/**
|
|
* @param {string} json
|
|
* @return {Object.<string, any>|null}
|
|
*/
|
|
const parseJSON = (json) => {
|
|
try {
|
|
return JSON.parse(json);
|
|
} catch (err) {
|
|
log.error(err);
|
|
return null;
|
|
}
|
|
};
|
|
|
|
const startMaster = () => {
|
|
if (!process.env.SOCKET && process.env.PORT && isNaN(+process.env.PORT)) {
|
|
log.warn('UNIX domain socket is now supported by using SOCKET. Please migrate from PORT hack.');
|
|
}
|
|
|
|
log.warn(`Starting streaming API server master with ${numWorkers} workers`);
|
|
};
|
|
|
|
const startWorker = async (workerId) => {
|
|
log.warn(`Starting worker ${workerId}`);
|
|
|
|
const pgConfigs = {
|
|
development: {
|
|
user: process.env.DB_USER || pg.defaults.user,
|
|
password: process.env.DB_PASS || pg.defaults.password,
|
|
database: process.env.DB_NAME || 'mastodon_development',
|
|
host: process.env.DB_HOST || pg.defaults.host,
|
|
port: process.env.DB_PORT || pg.defaults.port,
|
|
max: 10,
|
|
},
|
|
|
|
production: {
|
|
user: process.env.DB_USER || 'mastodon',
|
|
password: process.env.DB_PASS || '',
|
|
database: process.env.DB_NAME || 'mastodon_production',
|
|
host: process.env.DB_HOST || 'localhost',
|
|
port: process.env.DB_PORT || 5432,
|
|
max: 10,
|
|
},
|
|
};
|
|
|
|
if (!!process.env.DB_SSLMODE && process.env.DB_SSLMODE !== 'disable') {
|
|
pgConfigs.development.ssl = true;
|
|
pgConfigs.production.ssl = true;
|
|
}
|
|
|
|
const app = express();
|
|
|
|
app.set('trusted proxy', process.env.TRUSTED_PROXY_IP || 'loopback,uniquelocal');
|
|
|
|
const pgPool = new pg.Pool(Object.assign(pgConfigs[env], dbUrlToConfig(process.env.DATABASE_URL)));
|
|
const server = http.createServer(app);
|
|
const redisNamespace = process.env.REDIS_NAMESPACE || null;
|
|
|
|
const redisParams = {
|
|
socket: {
|
|
host: process.env.REDIS_HOST || '127.0.0.1',
|
|
port: process.env.REDIS_PORT || 6379,
|
|
},
|
|
database: process.env.REDIS_DB || 0,
|
|
password: process.env.REDIS_PASSWORD || undefined,
|
|
};
|
|
|
|
if (redisNamespace) {
|
|
redisParams.namespace = redisNamespace;
|
|
}
|
|
|
|
const redisPrefix = redisNamespace ? `${redisNamespace}:` : '';
|
|
|
|
const redisSubscribeClient = await redisUrlToClient(redisParams, process.env.REDIS_URL);
|
|
const redisClient = await redisUrlToClient(redisParams, process.env.REDIS_URL);
|
|
|
|
/**
|
|
* @param {string[]} channels
|
|
* @return {function(): void}
|
|
*/
|
|
const subscriptionHeartbeat = channels => {
|
|
const interval = 6 * 60;
|
|
|
|
const tellSubscribed = () => {
|
|
channels.forEach(channel => redisClient.set(`${redisPrefix}subscribed:${channel}`, '1', 'EX', interval * 3));
|
|
};
|
|
|
|
tellSubscribed();
|
|
|
|
const heartbeat = setInterval(tellSubscribed, interval * 1000);
|
|
|
|
return () => {
|
|
clearInterval(heartbeat);
|
|
};
|
|
};
|
|
|
|
/**
|
|
* @param {string} channel
|
|
* @param {function(string): void} callback
|
|
*/
|
|
const subscribe = (channel, callback) => {
|
|
log.silly(`Adding listener for ${channel}`);
|
|
|
|
redisSubscribeClient.subscribe(channel, callback);
|
|
};
|
|
|
|
/**
|
|
* @param {string} channel
|
|
* @param {function(string): void} callback
|
|
*/
|
|
const unsubscribe = (channel, callback) => {
|
|
log.silly(`Removing listener for ${channel}`);
|
|
|
|
redisSubscribeClient.unsubscribe(channel, callback);
|
|
};
|
|
|
|
const FALSE_VALUES = [
|
|
false,
|
|
0,
|
|
'0',
|
|
'f',
|
|
'F',
|
|
'false',
|
|
'FALSE',
|
|
'off',
|
|
'OFF',
|
|
];
|
|
|
|
/**
|
|
* @param {any} value
|
|
* @return {boolean}
|
|
*/
|
|
const isTruthy = value =>
|
|
value && !FALSE_VALUES.includes(value);
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} res
|
|
* @param {function(Error=): void}
|
|
*/
|
|
const allowCrossDomain = (req, res, next) => {
|
|
res.header('Access-Control-Allow-Origin', '*');
|
|
res.header('Access-Control-Allow-Headers', 'Authorization, Accept, Cache-Control');
|
|
res.header('Access-Control-Allow-Methods', 'GET, OPTIONS');
|
|
|
|
next();
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} res
|
|
* @param {function(Error=): void}
|
|
*/
|
|
const setRequestId = (req, res, next) => {
|
|
req.requestId = uuid.v4();
|
|
res.header('X-Request-Id', req.requestId);
|
|
|
|
next();
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} res
|
|
* @param {function(Error=): void}
|
|
*/
|
|
const setRemoteAddress = (req, res, next) => {
|
|
req.remoteAddress = req.connection.remoteAddress;
|
|
|
|
next();
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {string[]} necessaryScopes
|
|
* @return {boolean}
|
|
*/
|
|
const isInScope = (req, necessaryScopes) =>
|
|
req.scopes.some(scope => necessaryScopes.includes(scope));
|
|
|
|
/**
|
|
* @param {string} token
|
|
* @param {any} req
|
|
* @return {Promise.<void>}
|
|
*/
|
|
const accountFromToken = (token, req) => new Promise((resolve, reject) => {
|
|
pgPool.connect((err, client, done) => {
|
|
if (err) {
|
|
reject(err);
|
|
return;
|
|
}
|
|
|
|
client.query('SELECT oauth_access_tokens.id, oauth_access_tokens.resource_owner_id, users.account_id, users.chosen_languages, oauth_access_tokens.scopes, devices.device_id FROM oauth_access_tokens INNER JOIN users ON oauth_access_tokens.resource_owner_id = users.id LEFT OUTER JOIN devices ON oauth_access_tokens.id = devices.access_token_id WHERE oauth_access_tokens.token = $1 AND oauth_access_tokens.revoked_at IS NULL LIMIT 1', [token], (err, result) => {
|
|
done();
|
|
|
|
if (err) {
|
|
reject(err);
|
|
return;
|
|
}
|
|
|
|
if (result.rows.length === 0) {
|
|
err = new Error('Invalid access token');
|
|
err.status = 401;
|
|
|
|
reject(err);
|
|
return;
|
|
}
|
|
|
|
req.accessTokenId = result.rows[0].id;
|
|
req.scopes = result.rows[0].scopes.split(' ');
|
|
req.accountId = result.rows[0].account_id;
|
|
req.chosenLanguages = result.rows[0].chosen_languages;
|
|
req.deviceId = result.rows[0].device_id;
|
|
|
|
resolve();
|
|
});
|
|
});
|
|
});
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {boolean=} required
|
|
* @return {Promise.<void>}
|
|
*/
|
|
const accountFromRequest = (req, required = true) => new Promise((resolve, reject) => {
|
|
const authorization = req.headers.authorization;
|
|
const location = url.parse(req.url, true);
|
|
const accessToken = location.query.access_token || req.headers['sec-websocket-protocol'];
|
|
|
|
if (!authorization && !accessToken) {
|
|
if (required) {
|
|
const err = new Error('Missing access token');
|
|
err.status = 401;
|
|
|
|
reject(err);
|
|
return;
|
|
} else {
|
|
resolve();
|
|
return;
|
|
}
|
|
}
|
|
|
|
const token = authorization ? authorization.replace(/^Bearer /, '') : accessToken;
|
|
|
|
resolve(accountFromToken(token, req));
|
|
});
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @return {string}
|
|
*/
|
|
const channelNameFromPath = req => {
|
|
const { path, query } = req;
|
|
const onlyMedia = isTruthy(query.only_media);
|
|
|
|
switch (path) {
|
|
case '/api/v1/streaming/user':
|
|
return 'user';
|
|
case '/api/v1/streaming/user/notification':
|
|
return 'user:notification';
|
|
case '/api/v1/streaming/public':
|
|
return onlyMedia ? 'public:media' : 'public';
|
|
case '/api/v1/streaming/public/local':
|
|
return onlyMedia ? 'public:local:media' : 'public:local';
|
|
case '/api/v1/streaming/public/remote':
|
|
return onlyMedia ? 'public:remote:media' : 'public:remote';
|
|
case '/api/v1/streaming/hashtag':
|
|
return 'hashtag';
|
|
case '/api/v1/streaming/hashtag/local':
|
|
return 'hashtag:local';
|
|
case '/api/v1/streaming/direct':
|
|
return 'direct';
|
|
case '/api/v1/streaming/list':
|
|
return 'list';
|
|
default:
|
|
return undefined;
|
|
}
|
|
};
|
|
|
|
const PUBLIC_CHANNELS = [
|
|
'public',
|
|
'public:media',
|
|
'public:local',
|
|
'public:local:media',
|
|
'public:remote',
|
|
'public:remote:media',
|
|
'hashtag',
|
|
'hashtag:local',
|
|
];
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {string} channelName
|
|
* @return {Promise.<void>}
|
|
*/
|
|
const checkScopes = (req, channelName) => new Promise((resolve, reject) => {
|
|
log.silly(req.requestId, `Checking OAuth scopes for ${channelName}`);
|
|
|
|
// When accessing public channels, no scopes are needed
|
|
if (PUBLIC_CHANNELS.includes(channelName)) {
|
|
resolve();
|
|
return;
|
|
}
|
|
|
|
// The `read` scope has the highest priority, if the token has it
|
|
// then it can access all streams
|
|
const requiredScopes = ['read'];
|
|
|
|
// When accessing specifically the notifications stream,
|
|
// we need a read:notifications, while in all other cases,
|
|
// we can allow access with read:statuses. Mind that the
|
|
// user stream will not contain notifications unless
|
|
// the token has either read or read:notifications scope
|
|
// as well, this is handled separately.
|
|
if (channelName === 'user:notification') {
|
|
requiredScopes.push('read:notifications');
|
|
} else {
|
|
requiredScopes.push('read:statuses');
|
|
}
|
|
|
|
if (req.scopes && requiredScopes.some(requiredScope => req.scopes.includes(requiredScope))) {
|
|
resolve();
|
|
return;
|
|
}
|
|
|
|
const err = new Error('Access token does not cover required scopes');
|
|
err.status = 401;
|
|
|
|
reject(err);
|
|
});
|
|
|
|
/**
|
|
* @param {any} info
|
|
* @param {function(boolean, number, string): void} callback
|
|
*/
|
|
const wsVerifyClient = (info, callback) => {
|
|
// When verifying the websockets connection, we no longer pre-emptively
|
|
// check OAuth scopes and drop the connection if they're missing. We only
|
|
// drop the connection if access without token is not allowed by environment
|
|
// variables. OAuth scope checks are moved to the point of subscription
|
|
// to a specific stream.
|
|
|
|
accountFromRequest(info.req, alwaysRequireAuth).then(() => {
|
|
callback(true, undefined, undefined);
|
|
}).catch(err => {
|
|
log.error(info.req.requestId, err.toString());
|
|
callback(false, 401, 'Unauthorized');
|
|
});
|
|
};
|
|
|
|
/**
|
|
* @typedef SystemMessageHandlers
|
|
* @property {function(): void} onKill
|
|
*/
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {SystemMessageHandlers} eventHandlers
|
|
* @return {function(string): void}
|
|
*/
|
|
const createSystemMessageListener = (req, eventHandlers) => {
|
|
return message => {
|
|
const json = parseJSON(message);
|
|
|
|
if (!json) return;
|
|
|
|
const { event } = json;
|
|
|
|
log.silly(req.requestId, `System message for ${req.accountId}: ${event}`);
|
|
|
|
if (event === 'kill') {
|
|
log.verbose(req.requestId, `Closing connection for ${req.accountId} due to expired access token`);
|
|
eventHandlers.onKill();
|
|
}
|
|
};
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} res
|
|
*/
|
|
const subscribeHttpToSystemChannel = (req, res) => {
|
|
const systemChannelId = `timeline:access_token:${req.accessTokenId}`;
|
|
|
|
const listener = createSystemMessageListener(req, {
|
|
|
|
onKill() {
|
|
res.end();
|
|
},
|
|
|
|
});
|
|
|
|
res.on('close', () => {
|
|
unsubscribe(`${redisPrefix}${systemChannelId}`, listener);
|
|
});
|
|
|
|
subscribe(`${redisPrefix}${systemChannelId}`, listener);
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} res
|
|
* @param {function(Error=): void} next
|
|
*/
|
|
const authenticationMiddleware = (req, res, next) => {
|
|
if (req.method === 'OPTIONS') {
|
|
next();
|
|
return;
|
|
}
|
|
|
|
accountFromRequest(req, alwaysRequireAuth).then(() => checkScopes(req, channelNameFromPath(req))).then(() => {
|
|
subscribeHttpToSystemChannel(req, res);
|
|
}).then(() => {
|
|
next();
|
|
}).catch(err => {
|
|
next(err);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* @param {Error} err
|
|
* @param {any} req
|
|
* @param {any} res
|
|
* @param {function(Error=): void} next
|
|
*/
|
|
const errorMiddleware = (err, req, res, next) => {
|
|
log.error(req.requestId, err.toString());
|
|
|
|
if (res.headersSent) {
|
|
next(err);
|
|
return;
|
|
}
|
|
|
|
res.writeHead(err.status || 500, { 'Content-Type': 'application/json' });
|
|
res.end(JSON.stringify({ error: err.status ? err.toString() : 'An unexpected error occurred' }));
|
|
};
|
|
|
|
/**
|
|
* @param {array} arr
|
|
* @param {number=} shift
|
|
* @return {string}
|
|
*/
|
|
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
|
|
|
/**
|
|
* @param {string} listId
|
|
* @param {any} req
|
|
* @return {Promise.<void>}
|
|
*/
|
|
const authorizeListAccess = (listId, req) => new Promise((resolve, reject) => {
|
|
const { accountId } = req;
|
|
|
|
pgPool.connect((err, client, done) => {
|
|
if (err) {
|
|
reject();
|
|
return;
|
|
}
|
|
|
|
client.query('SELECT id, account_id FROM lists WHERE id = $1 LIMIT 1', [listId], (err, result) => {
|
|
done();
|
|
|
|
if (err || result.rows.length === 0 || result.rows[0].account_id !== accountId) {
|
|
reject();
|
|
return;
|
|
}
|
|
|
|
resolve();
|
|
});
|
|
});
|
|
});
|
|
|
|
/**
|
|
* @param {string[]} ids
|
|
* @param {any} req
|
|
* @param {function(string, string): void} output
|
|
* @param {function(string[], function(string): void): void} attachCloseHandler
|
|
* @param {boolean=} needsFiltering
|
|
* @return {function(string): void}
|
|
*/
|
|
const streamFrom = (ids, req, output, attachCloseHandler, needsFiltering = false) => {
|
|
const accountId = req.accountId || req.remoteAddress;
|
|
|
|
log.verbose(req.requestId, `Starting stream from ${ids.join(', ')} for ${accountId}`);
|
|
|
|
const listener = message => {
|
|
const json = parseJSON(message);
|
|
|
|
if (!json) return;
|
|
|
|
const { event, payload, queued_at } = json;
|
|
|
|
const transmit = () => {
|
|
const now = new Date().getTime();
|
|
const delta = now - queued_at;
|
|
const encodedPayload = typeof payload === 'object' ? JSON.stringify(payload) : payload;
|
|
|
|
log.silly(req.requestId, `Transmitting for ${accountId}: ${event} ${encodedPayload} Delay: ${delta}ms`);
|
|
output(event, encodedPayload);
|
|
};
|
|
|
|
// Only messages that may require filtering are statuses, since notifications
|
|
// are already personalized and deletes do not matter
|
|
if (!needsFiltering || event !== 'update') {
|
|
transmit();
|
|
return;
|
|
}
|
|
|
|
const unpackedPayload = payload;
|
|
const targetAccountIds = [unpackedPayload.account.id].concat(unpackedPayload.mentions.map(item => item.id));
|
|
const accountDomain = unpackedPayload.account.acct.split('@')[1];
|
|
|
|
if (Array.isArray(req.chosenLanguages) && unpackedPayload.language !== null && req.chosenLanguages.indexOf(unpackedPayload.language) === -1) {
|
|
log.silly(req.requestId, `Message ${unpackedPayload.id} filtered by language (${unpackedPayload.language})`);
|
|
return;
|
|
}
|
|
|
|
// When the account is not logged in, it is not necessary to confirm the block or mute
|
|
if (!req.accountId) {
|
|
transmit();
|
|
return;
|
|
}
|
|
|
|
pgPool.connect((err, client, done) => {
|
|
if (err) {
|
|
log.error(err);
|
|
return;
|
|
}
|
|
|
|
const queries = [
|
|
client.query(`SELECT 1
|
|
FROM blocks
|
|
WHERE (account_id = $1 AND target_account_id IN (${placeholders(targetAccountIds, 2)}))
|
|
OR (account_id = $2 AND target_account_id = $1)
|
|
UNION
|
|
SELECT 1
|
|
FROM mutes
|
|
WHERE account_id = $1
|
|
AND target_account_id IN (${placeholders(targetAccountIds, 2)})`, [req.accountId, unpackedPayload.account.id].concat(targetAccountIds)),
|
|
];
|
|
|
|
if (accountDomain) {
|
|
queries.push(client.query('SELECT 1 FROM account_domain_blocks WHERE account_id = $1 AND domain = $2', [req.accountId, accountDomain]));
|
|
}
|
|
|
|
Promise.all(queries).then(values => {
|
|
done();
|
|
|
|
if (values[0].rows.length > 0 || (values.length > 1 && values[1].rows.length > 0)) {
|
|
return;
|
|
}
|
|
|
|
transmit();
|
|
}).catch(err => {
|
|
done();
|
|
log.error(err);
|
|
});
|
|
});
|
|
};
|
|
|
|
ids.forEach(id => {
|
|
subscribe(`${redisPrefix}${id}`, listener);
|
|
});
|
|
|
|
if (attachCloseHandler) {
|
|
attachCloseHandler(ids.map(id => `${redisPrefix}${id}`), listener);
|
|
}
|
|
|
|
return listener;
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} res
|
|
* @return {function(string, string): void}
|
|
*/
|
|
const streamToHttp = (req, res) => {
|
|
const accountId = req.accountId || req.remoteAddress;
|
|
|
|
res.setHeader('Content-Type', 'text/event-stream');
|
|
res.setHeader('Cache-Control', 'no-store');
|
|
res.setHeader('Transfer-Encoding', 'chunked');
|
|
|
|
res.write(':)\n');
|
|
|
|
const heartbeat = setInterval(() => res.write(':thump\n'), 15000);
|
|
|
|
req.on('close', () => {
|
|
log.verbose(req.requestId, `Ending stream for ${accountId}`);
|
|
clearInterval(heartbeat);
|
|
});
|
|
|
|
return (event, payload) => {
|
|
res.write(`event: ${event}\n`);
|
|
res.write(`data: ${payload}\n\n`);
|
|
};
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {function(): void} [closeHandler]
|
|
* @return {function(string[]): void}
|
|
*/
|
|
const streamHttpEnd = (req, closeHandler = undefined) => (ids) => {
|
|
req.on('close', () => {
|
|
ids.forEach(id => {
|
|
unsubscribe(id);
|
|
});
|
|
|
|
if (closeHandler) {
|
|
closeHandler();
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {any} ws
|
|
* @param {string[]} streamName
|
|
* @return {function(string, string): void}
|
|
*/
|
|
const streamToWs = (req, ws, streamName) => (event, payload) => {
|
|
if (ws.readyState !== ws.OPEN) {
|
|
log.error(req.requestId, 'Tried writing to closed socket');
|
|
return;
|
|
}
|
|
|
|
ws.send(JSON.stringify({ stream: streamName, event, payload }));
|
|
};
|
|
|
|
/**
|
|
* @param {any} res
|
|
*/
|
|
const httpNotFound = res => {
|
|
res.writeHead(404, { 'Content-Type': 'application/json' });
|
|
res.end(JSON.stringify({ error: 'Not found' }));
|
|
};
|
|
|
|
app.use(setRequestId);
|
|
app.use(setRemoteAddress);
|
|
app.use(allowCrossDomain);
|
|
|
|
app.get('/api/v1/streaming/health', (req, res) => {
|
|
res.writeHead(200, { 'Content-Type': 'text/plain' });
|
|
res.end('OK');
|
|
});
|
|
|
|
app.use(authenticationMiddleware);
|
|
app.use(errorMiddleware);
|
|
|
|
app.get('/api/v1/streaming/*', (req, res) => {
|
|
channelNameToIds(req, channelNameFromPath(req), req.query).then(({ channelIds, options }) => {
|
|
const onSend = streamToHttp(req, res);
|
|
const onEnd = streamHttpEnd(req, subscriptionHeartbeat(channelIds));
|
|
|
|
streamFrom(channelIds, req, onSend, onEnd, options.needsFiltering);
|
|
}).catch(err => {
|
|
log.verbose(req.requestId, 'Subscription error:', err.toString());
|
|
httpNotFound(res);
|
|
});
|
|
});
|
|
|
|
const wss = new WebSocket.Server({ server, verifyClient: wsVerifyClient });
|
|
|
|
/**
|
|
* @typedef StreamParams
|
|
* @property {string} [tag]
|
|
* @property {string} [list]
|
|
* @property {string} [only_media]
|
|
*/
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @return {string[]}
|
|
*/
|
|
const channelsForUserStream = req => {
|
|
const arr = [`timeline:${req.accountId}`];
|
|
|
|
if (isInScope(req, ['crypto']) && req.deviceId) {
|
|
arr.push(`timeline:${req.accountId}:${req.deviceId}`);
|
|
}
|
|
|
|
if (isInScope(req, ['read', 'read:notifications'])) {
|
|
arr.push(`timeline:${req.accountId}:notifications`);
|
|
}
|
|
|
|
return arr;
|
|
};
|
|
|
|
/**
|
|
* @param {any} req
|
|
* @param {string} name
|
|
* @param {StreamParams} params
|
|
* @return {Promise.<{ channelIds: string[], options: { needsFiltering: boolean } }>}
|
|
*/
|
|
const channelNameToIds = (req, name, params) => new Promise((resolve, reject) => {
|
|
switch (name) {
|
|
case 'user':
|
|
resolve({
|
|
channelIds: channelsForUserStream(req),
|
|
options: { needsFiltering: false },
|
|
});
|
|
|
|
break;
|
|
case 'user:notification':
|
|
resolve({
|
|
channelIds: [`timeline:${req.accountId}:notifications`],
|
|
options: { needsFiltering: false },
|
|
});
|
|
|
|
break;
|
|
case 'public':
|
|
resolve({
|
|
channelIds: ['timeline:public'],
|
|
options: { needsFiltering: true },
|
|
});
|
|
|
|
break;
|
|
case 'public:local':
|
|
resolve({
|
|
channelIds: ['timeline:public:local'],
|
|
options: { needsFiltering: true },
|
|
});
|
|
|
|
break;
|
|
case 'public:remote':
|
|
resolve({
|
|
channelIds: ['timeline:public:remote'],
|
|
options: { needsFiltering: true },
|
|
});
|
|
|
|
break;
|
|
case 'public:media':
|
|
resolve({
|
|
channelIds: ['timeline:public:media'],
|
|
options: { needsFiltering: true },
|
|
});
|
|
|
|
break;
|
|
case 'public:local:media':
|
|
resolve({
|
|
channelIds: ['timeline:public:local:media'],
|
|
options: { needsFiltering: true },
|
|
});
|
|
|
|
break;
|
|
case 'public:remote:media':
|
|
resolve({
|
|
channelIds: ['timeline:public:remote:media'],
|
|
options: { needsFiltering: true },
|
|
});
|
|
|
|
break;
|
|
case 'direct':
|
|
resolve({
|
|
channelIds: [`timeline:direct:${req.accountId}`],
|
|
options: { needsFiltering: false },
|
|
});
|
|
|
|
break;
|
|
case 'hashtag':
|
|
if (!params.tag || params.tag.length === 0) {
|
|
reject('No tag for stream provided');
|
|
} else {
|
|
resolve({
|
|
channelIds: [`timeline:hashtag:${params.tag.toLowerCase()}`],
|
|
options: { needsFiltering: true },
|
|
});
|
|
}
|
|
|
|
break;
|
|
case 'hashtag:local':
|
|
if (!params.tag || params.tag.length === 0) {
|
|
reject('No tag for stream provided');
|
|
} else {
|
|
resolve({
|
|
channelIds: [`timeline:hashtag:${params.tag.toLowerCase()}:local`],
|
|
options: { needsFiltering: true },
|
|
});
|
|
}
|
|
|
|
break;
|
|
case 'list':
|
|
authorizeListAccess(params.list, req).then(() => {
|
|
resolve({
|
|
channelIds: [`timeline:list:${params.list}`],
|
|
options: { needsFiltering: false },
|
|
});
|
|
}).catch(() => {
|
|
reject('Not authorized to stream this list');
|
|
});
|
|
|
|
break;
|
|
default:
|
|
reject('Unknown stream type');
|
|
}
|
|
});
|
|
|
|
/**
|
|
* @param {string} channelName
|
|
* @param {StreamParams} params
|
|
* @return {string[]}
|
|
*/
|
|
const streamNameFromChannelName = (channelName, params) => {
|
|
if (channelName === 'list') {
|
|
return [channelName, params.list];
|
|
} else if (['hashtag', 'hashtag:local'].includes(channelName)) {
|
|
return [channelName, params.tag];
|
|
} else {
|
|
return [channelName];
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @typedef WebSocketSession
|
|
* @property {any} socket
|
|
* @property {any} request
|
|
* @property {Object.<string, { listener: function(string): void, stopHeartbeat: function(): void }>} subscriptions
|
|
*/
|
|
|
|
/**
|
|
* @param {WebSocketSession} session
|
|
* @param {string} channelName
|
|
* @param {StreamParams} params
|
|
*/
|
|
const subscribeWebsocketToChannel = ({ socket, request, subscriptions }, channelName, params) =>
|
|
checkScopes(request, channelName).then(() => channelNameToIds(request, channelName, params)).then(({
|
|
channelIds,
|
|
options,
|
|
}) => {
|
|
if (subscriptions[channelIds.join(';')]) {
|
|
return;
|
|
}
|
|
|
|
const onSend = streamToWs(request, socket, streamNameFromChannelName(channelName, params));
|
|
const stopHeartbeat = subscriptionHeartbeat(channelIds);
|
|
const listener = streamFrom(channelIds, request, onSend, undefined, options.needsFiltering);
|
|
|
|
subscriptions[channelIds.join(';')] = {
|
|
listener,
|
|
stopHeartbeat,
|
|
};
|
|
}).catch(err => {
|
|
log.verbose(request.requestId, 'Subscription error:', err.toString());
|
|
socket.send(JSON.stringify({ error: err.toString() }));
|
|
});
|
|
|
|
/**
|
|
* @param {WebSocketSession} session
|
|
* @param {string} channelName
|
|
* @param {StreamParams} params
|
|
*/
|
|
const unsubscribeWebsocketFromChannel = ({ socket, request, subscriptions }, channelName, params) =>
|
|
channelNameToIds(request, channelName, params).then(({ channelIds }) => {
|
|
log.verbose(request.requestId, `Ending stream from ${channelIds.join(', ')} for ${request.accountId}`);
|
|
|
|
const subscription = subscriptions[channelIds.join(';')];
|
|
|
|
if (!subscription) {
|
|
return;
|
|
}
|
|
|
|
const { listener, stopHeartbeat } = subscription;
|
|
|
|
channelIds.forEach(channelId => {
|
|
unsubscribe(`${redisPrefix}${channelId}`, listener);
|
|
});
|
|
|
|
stopHeartbeat();
|
|
|
|
delete subscriptions[channelIds.join(';')];
|
|
}).catch(err => {
|
|
log.verbose(request.requestId, 'Unsubscription error:', err);
|
|
socket.send(JSON.stringify({ error: err.toString() }));
|
|
});
|
|
|
|
/**
|
|
* @param {WebSocketSession} session
|
|
*/
|
|
const subscribeWebsocketToSystemChannel = ({ socket, request, subscriptions }) => {
|
|
const systemChannelId = `timeline:access_token:${request.accessTokenId}`;
|
|
|
|
const listener = createSystemMessageListener(request, {
|
|
|
|
onKill() {
|
|
socket.close();
|
|
},
|
|
|
|
});
|
|
|
|
subscribe(`${redisPrefix}${systemChannelId}`, listener);
|
|
|
|
subscriptions[systemChannelId] = {
|
|
listener,
|
|
stopHeartbeat: () => {
|
|
},
|
|
};
|
|
};
|
|
|
|
/**
|
|
* @param {string|string[]} arrayOrString
|
|
* @return {string}
|
|
*/
|
|
const firstParam = arrayOrString => {
|
|
if (Array.isArray(arrayOrString)) {
|
|
return arrayOrString[0];
|
|
} else {
|
|
return arrayOrString;
|
|
}
|
|
};
|
|
|
|
wss.on('connection', (ws, req) => {
|
|
const location = url.parse(req.url, true);
|
|
|
|
req.requestId = uuid.v4();
|
|
req.remoteAddress = ws._socket.remoteAddress;
|
|
|
|
ws.isAlive = true;
|
|
|
|
ws.on('pong', () => {
|
|
ws.isAlive = true;
|
|
});
|
|
|
|
/**
|
|
* @type {WebSocketSession}
|
|
*/
|
|
const session = {
|
|
socket: ws,
|
|
request: req,
|
|
subscriptions: {},
|
|
};
|
|
|
|
const onEnd = () => {
|
|
const keys = Object.keys(session.subscriptions);
|
|
|
|
keys.forEach(channelIds => {
|
|
const { listener, stopHeartbeat } = session.subscriptions[channelIds];
|
|
|
|
channelIds.split(';').forEach(channelId => {
|
|
unsubscribe(`${redisPrefix}${channelId}`, listener);
|
|
});
|
|
|
|
stopHeartbeat();
|
|
});
|
|
};
|
|
|
|
ws.on('close', onEnd);
|
|
ws.on('error', onEnd);
|
|
|
|
ws.on('message', data => {
|
|
const json = parseJSON(data);
|
|
|
|
if (!json) return;
|
|
|
|
const { type, stream, ...params } = json;
|
|
|
|
if (type === 'subscribe') {
|
|
subscribeWebsocketToChannel(session, firstParam(stream), params);
|
|
} else if (type === 'unsubscribe') {
|
|
unsubscribeWebsocketFromChannel(session, firstParam(stream), params);
|
|
} else {
|
|
// Unknown action type
|
|
}
|
|
});
|
|
|
|
subscribeWebsocketToSystemChannel(session);
|
|
|
|
if (location.query.stream) {
|
|
subscribeWebsocketToChannel(session, firstParam(location.query.stream), location.query);
|
|
}
|
|
});
|
|
|
|
setInterval(() => {
|
|
wss.clients.forEach(ws => {
|
|
if (ws.isAlive === false) {
|
|
ws.terminate();
|
|
return;
|
|
}
|
|
|
|
ws.isAlive = false;
|
|
ws.ping('', false);
|
|
});
|
|
}, 30000);
|
|
|
|
attachServerWithConfig(server, address => {
|
|
log.warn(`Worker ${workerId} now listening on ${address}`);
|
|
});
|
|
|
|
const onExit = () => {
|
|
log.warn(`Worker ${workerId} exiting`);
|
|
server.close();
|
|
process.exit(0);
|
|
};
|
|
|
|
const onError = (err) => {
|
|
log.error(err);
|
|
server.close();
|
|
process.exit(0);
|
|
};
|
|
|
|
process.on('SIGINT', onExit);
|
|
process.on('SIGTERM', onExit);
|
|
process.on('exit', onExit);
|
|
process.on('uncaughtException', onError);
|
|
};
|
|
|
|
/**
|
|
* @param {any} server
|
|
* @param {function(string): void} [onSuccess]
|
|
*/
|
|
const attachServerWithConfig = (server, onSuccess) => {
|
|
if (process.env.SOCKET || process.env.PORT && isNaN(+process.env.PORT)) {
|
|
server.listen(process.env.SOCKET || process.env.PORT, () => {
|
|
if (onSuccess) {
|
|
fs.chmodSync(server.address(), 0o666);
|
|
onSuccess(server.address());
|
|
}
|
|
});
|
|
} else {
|
|
server.listen(+process.env.PORT || 4000, process.env.BIND || '127.0.0.1', () => {
|
|
if (onSuccess) {
|
|
onSuccess(`${server.address().address}:${server.address().port}`);
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @param {function(Error=): void} onSuccess
|
|
*/
|
|
const onPortAvailable = onSuccess => {
|
|
const testServer = http.createServer();
|
|
|
|
testServer.once('error', err => {
|
|
onSuccess(err);
|
|
});
|
|
|
|
testServer.once('listening', () => {
|
|
testServer.once('close', () => onSuccess());
|
|
testServer.close();
|
|
});
|
|
|
|
attachServerWithConfig(testServer);
|
|
};
|
|
|
|
onPortAvailable(err => {
|
|
if (err) {
|
|
log.error('Could not start server, the port or socket is in use');
|
|
return;
|
|
}
|
|
|
|
throng({
|
|
workers: numWorkers,
|
|
lifetime: Infinity,
|
|
start: startWorker,
|
|
master: startMaster,
|
|
});
|
|
});
|