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uptime-kuma/server/util-server.js
Minh Hoàng dcecd10c88
Feat/add gRPC protocol (#1)
* feat: added monitor with gRPC

Co-authored-by: minhhn3 <minhhn3@vng.com.vn>
2022-08-03 12:00:39 +07:00

648 lines
19 KiB
JavaScript

const tcpp = require("tcp-ping");
const Ping = require("./ping-lite");
const { R } = require("redbean-node");
const { log, genSecret } = require("../src/util");
const passwordHash = require("./password-hash");
const { Resolver } = require("dns");
const childProcess = require("child_process");
const iconv = require("iconv-lite");
const chardet = require("chardet");
const mqtt = require("mqtt");
const chroma = require("chroma-js");
const { badgeConstants } = require("./config");
const mssql = require("mssql");
const { Client } = require("pg");
const postgresConParse = require("pg-connection-string").parse;
const { NtlmClient } = require("axios-ntlm");
const { Settings } = require("./settings");
const grpc = require("@grpc/grpc-js");
const protojs = require("protobufjs");
// From ping-lite
exports.WIN = /^win/.test(process.platform);
exports.LIN = /^linux/.test(process.platform);
exports.MAC = /^darwin/.test(process.platform);
exports.FBSD = /^freebsd/.test(process.platform);
exports.BSD = /bsd$/.test(process.platform);
/**
* Init or reset JWT secret
* @returns {Promise<Bean>}
*/
exports.initJWTSecret = async () => {
let jwtSecretBean = await R.findOne("setting", " `key` = ? ", [
"jwtSecret",
]);
if (!jwtSecretBean) {
jwtSecretBean = R.dispense("setting");
jwtSecretBean.key = "jwtSecret";
}
jwtSecretBean.value = passwordHash.generate(genSecret());
await R.store(jwtSecretBean);
return jwtSecretBean;
};
/**
* Send TCP request to specified hostname and port
* @param {string} hostname Hostname / address of machine
* @param {number} port TCP port to test
* @returns {Promise<number>} Maximum time in ms rounded to nearest integer
*/
exports.tcping = function (hostname, port) {
return new Promise((resolve, reject) => {
tcpp.ping({
address: hostname,
port: port,
attempts: 1,
}, function (err, data) {
if (err) {
reject(err);
}
if (data.results.length >= 1 && data.results[0].err) {
reject(data.results[0].err);
}
resolve(Math.round(data.max));
});
});
};
/**
* Ping the specified machine
* @param {string} hostname Hostname / address of machine
* @returns {Promise<number>} Time for ping in ms rounded to nearest integer
*/
exports.ping = async (hostname) => {
try {
return await exports.pingAsync(hostname);
} catch (e) {
// If the host cannot be resolved, try again with ipv6
if (e.message.includes("service not known")) {
return await exports.pingAsync(hostname, true);
} else {
throw e;
}
}
};
/**
* Ping the specified machine
* @param {string} hostname Hostname / address of machine to ping
* @param {boolean} ipv6 Should IPv6 be used?
* @returns {Promise<number>} Time for ping in ms rounded to nearest integer
*/
exports.pingAsync = function (hostname, ipv6 = false) {
return new Promise((resolve, reject) => {
const ping = new Ping(hostname, {
ipv6
});
ping.send(function (err, ms, stdout) {
if (err) {
reject(err);
} else if (ms === null) {
reject(new Error(stdout));
} else {
resolve(Math.round(ms));
}
});
});
};
/**
* MQTT Monitor
* @param {string} hostname Hostname / address of machine to test
* @param {string} topic MQTT topic
* @param {string} okMessage Expected result
* @param {Object} [options={}] MQTT options. Contains port, username,
* password and interval (interval defaults to 20)
* @returns {Promise<string>}
*/
exports.mqttAsync = function (hostname, topic, okMessage, options = {}) {
return new Promise((resolve, reject) => {
const { port, username, password, interval = 20 } = options;
// Adds MQTT protocol to the hostname if not already present
if (!/^(?:http|mqtt)s?:\/\//.test(hostname)) {
hostname = "mqtt://" + hostname;
}
const timeoutID = setTimeout(() => {
log.debug("mqtt", "MQTT timeout triggered");
client.end();
reject(new Error("Timeout"));
}, interval * 1000 * 0.8);
log.debug("mqtt", "MQTT connecting");
let client = mqtt.connect(hostname, {
port,
username,
password
});
client.on("connect", () => {
log.debug("mqtt", "MQTT connected");
try {
log.debug("mqtt", "MQTT subscribe topic");
client.subscribe(topic);
} catch (e) {
client.end();
clearTimeout(timeoutID);
reject(new Error("Cannot subscribe topic"));
}
});
client.on("error", (error) => {
client.end();
clearTimeout(timeoutID);
reject(error);
});
client.on("message", (messageTopic, message) => {
if (messageTopic === topic) {
client.end();
clearTimeout(timeoutID);
if (okMessage != null && okMessage !== "" && message.toString() !== okMessage) {
reject(new Error(`Message Mismatch - Topic: ${messageTopic}; Message: ${message.toString()}`));
} else {
resolve(`Topic: ${messageTopic}; Message: ${message.toString()}`);
}
}
});
});
};
/**
* Use NTLM Auth for a http request.
* @param {Object} options The http request options
* @param {Object} ntlmOptions The auth options
* @returns {Promise<(string[]|Object[]|Object)>}
*/
exports.httpNtlm = function (options, ntlmOptions) {
return new Promise((resolve, reject) => {
let client = NtlmClient(ntlmOptions);
client(options)
.then((resp) => {
resolve(resp);
})
.catch((err) => {
reject(err);
});
});
};
/**
* Resolves a given record using the specified DNS server
* @param {string} hostname The hostname of the record to lookup
* @param {string} resolverServer The DNS server to use
* @param {string} resolverPort Port the DNS server is listening on
* @param {string} rrtype The type of record to request
* @returns {Promise<(string[]|Object[]|Object)>}
*/
exports.dnsResolve = function (hostname, resolverServer, resolverPort, rrtype) {
const resolver = new Resolver();
// Remove brackets from IPv6 addresses so we can re-add them to
// prevent issues with ::1:5300 (::1 port 5300)
resolverServer = resolverServer.replace("[", "").replace("]", "");
resolver.setServers([ `[${resolverServer}]:${resolverPort}` ]);
return new Promise((resolve, reject) => {
if (rrtype === "PTR") {
resolver.reverse(hostname, (err, records) => {
if (err) {
reject(err);
} else {
resolve(records);
}
});
} else {
resolver.resolve(hostname, rrtype, (err, records) => {
if (err) {
reject(err);
} else {
resolve(records);
}
});
}
});
};
/**
* Run a query on SQL Server
* @param {string} connectionString The database connection string
* @param {string} query The query to validate the database with
* @returns {Promise<(string[]|Object[]|Object)>}
*/
exports.mssqlQuery = function (connectionString, query) {
return new Promise((resolve, reject) => {
mssql.connect(connectionString).then(pool => {
return pool.request()
.query(query);
}).then(result => {
resolve(result);
}).catch(err => {
reject(err);
}).finally(() => {
mssql.close();
});
});
};
/**
* Run a query on Postgres
* @param {string} connectionString The database connection string
* @param {string} query The query to validate the database with
* @returns {Promise<(string[]|Object[]|Object)>}
*/
exports.postgresQuery = function (connectionString, query) {
return new Promise((resolve, reject) => {
const config = postgresConParse(connectionString);
if (config.password === "") {
// See https://github.com/brianc/node-postgres/issues/1927
return reject(new Error("Password is undefined."));
}
const client = new Client({ connectionString });
client.connect();
return client.query(query)
.then(res => {
resolve(res);
})
.catch(err => {
reject(err);
})
.finally(() => {
client.end();
});
});
};
/**
* Retrieve value of setting based on key
* @param {string} key Key of setting to retrieve
* @returns {Promise<any>} Value
* @deprecated Use await Settings.get(key)
*/
exports.setting = async function (key) {
return await Settings.get(key);
};
/**
* Sets the specified setting to specifed value
* @param {string} key Key of setting to set
* @param {any} value Value to set to
* @param {?string} type Type of setting
* @returns {Promise<void>}
*/
exports.setSetting = async function (key, value, type = null) {
await Settings.set(key, value, type);
};
/**
* Get settings based on type
* @param {string} type The type of setting
* @returns {Promise<Bean>}
*/
exports.getSettings = async function (type) {
return await Settings.getSettings(type);
};
/**
* Set settings based on type
* @param {string} type Type of settings to set
* @param {Object} data Values of settings
* @returns {Promise<void>}
*/
exports.setSettings = async function (type, data) {
await Settings.setSettings(type, data);
};
// ssl-checker by @dyaa
//https://github.com/dyaa/ssl-checker/blob/master/src/index.ts
/**
* Get number of days between two dates
* @param {Date} validFrom Start date
* @param {Date} validTo End date
* @returns {number}
*/
const getDaysBetween = (validFrom, validTo) =>
Math.round(Math.abs(+validFrom - +validTo) / 8.64e7);
/**
* Get days remaining from a time range
* @param {Date} validFrom Start date
* @param {Date} validTo End date
* @returns {number}
*/
const getDaysRemaining = (validFrom, validTo) => {
const daysRemaining = getDaysBetween(validFrom, validTo);
if (new Date(validTo).getTime() < new Date().getTime()) {
return -daysRemaining;
}
return daysRemaining;
};
/**
* Fix certificate info for display
* @param {Object} info The chain obtained from getPeerCertificate()
* @returns {Object} An object representing certificate information
*/
const parseCertificateInfo = function (info) {
let link = info;
let i = 0;
const existingList = {};
while (link) {
log.debug("cert", `[${i}] ${link.fingerprint}`);
if (!link.valid_from || !link.valid_to) {
break;
}
link.validTo = new Date(link.valid_to);
link.validFor = link.subjectaltname?.replace(/DNS:|IP Address:/g, "").split(", ");
link.daysRemaining = getDaysRemaining(new Date(), link.validTo);
existingList[link.fingerprint] = true;
// Move up the chain until loop is encountered
if (link.issuerCertificate == null) {
break;
} else if (link.issuerCertificate.fingerprint in existingList) {
log.debug("cert", `[Last] ${link.issuerCertificate.fingerprint}`);
link.issuerCertificate = null;
break;
} else {
link = link.issuerCertificate;
}
// Should be no use, but just in case.
if (i > 500) {
throw new Error("Dead loop occurred in parseCertificateInfo");
}
i++;
}
return info;
};
/**
* Check if certificate is valid
* @param {Object} res Response object from axios
* @returns {Object} Object containing certificate information
*/
exports.checkCertificate = function (res) {
const info = res.request.res.socket.getPeerCertificate(true);
const valid = res.request.res.socket.authorized || false;
log.debug("cert", "Parsing Certificate Info");
const parsedInfo = parseCertificateInfo(info);
return {
valid: valid,
certInfo: parsedInfo
};
};
/**
* Check if the provided status code is within the accepted ranges
* @param {number} status The status code to check
* @param {string[]} acceptedCodes An array of accepted status codes
* @returns {boolean} True if status code within range, false otherwise
* @throws {Error} Will throw an error if the provided status code is not a valid range string or code string
*/
exports.checkStatusCode = function (status, acceptedCodes) {
if (acceptedCodes == null || acceptedCodes.length === 0) {
return false;
}
for (const codeRange of acceptedCodes) {
const codeRangeSplit = codeRange.split("-").map(string => parseInt(string));
if (codeRangeSplit.length === 1) {
if (status === codeRangeSplit[0]) {
return true;
}
} else if (codeRangeSplit.length === 2) {
if (status >= codeRangeSplit[0] && status <= codeRangeSplit[1]) {
return true;
}
} else {
throw new Error("Invalid status code range");
}
}
return false;
};
/**
* Get total number of clients in room
* @param {Server} io Socket server instance
* @param {string} roomName Name of room to check
* @returns {number}
*/
exports.getTotalClientInRoom = (io, roomName) => {
const sockets = io.sockets;
if (!sockets) {
return 0;
}
const adapter = sockets.adapter;
if (!adapter) {
return 0;
}
const room = adapter.rooms.get(roomName);
if (room) {
return room.size;
} else {
return 0;
}
};
/**
* Allow CORS all origins if development
* @param {Object} res Response object from axios
*/
exports.allowDevAllOrigin = (res) => {
if (process.env.NODE_ENV === "development") {
exports.allowAllOrigin(res);
}
};
/**
* Allow CORS all origins
* @param {Object} res Response object from axios
*/
exports.allowAllOrigin = (res) => {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
};
/**
* Check if a user is logged in
* @param {Socket} socket Socket instance
*/
exports.checkLogin = (socket) => {
if (!socket.userID) {
throw new Error("You are not logged in.");
}
};
/**
* For logged-in users, double-check the password
* @param {Socket} socket Socket.io instance
* @param {string} currentPassword
* @returns {Promise<Bean>}
*/
exports.doubleCheckPassword = async (socket, currentPassword) => {
if (typeof currentPassword !== "string") {
throw new Error("Wrong data type?");
}
let user = await R.findOne("user", " id = ? AND active = 1 ", [
socket.userID,
]);
if (!user || !passwordHash.verify(currentPassword, user.password)) {
throw new Error("Incorrect current password");
}
return user;
};
/** Start Unit tests */
exports.startUnitTest = async () => {
console.log("Starting unit test...");
const npm = /^win/.test(process.platform) ? "npm.cmd" : "npm";
const child = childProcess.spawn(npm, [ "run", "jest" ]);
child.stdout.on("data", (data) => {
console.log(data.toString());
});
child.stderr.on("data", (data) => {
console.log(data.toString());
});
child.on("close", function (code) {
console.log("Jest exit code: " + code);
process.exit(code);
});
};
/**
* Convert unknown string to UTF8
* @param {Uint8Array} body Buffer
* @returns {string}
*/
exports.convertToUTF8 = (body) => {
const guessEncoding = chardet.detect(body);
const str = iconv.decode(body, guessEncoding);
return str.toString();
};
/**
* Returns a color code in hex format based on a given percentage:
* 0% => hue = 10 => red
* 100% => hue = 90 => green
*
* @param {number} percentage float, 0 to 1
* @param {number} maxHue
* @param {number} minHue, int
* @returns {string}, hex value
*/
exports.percentageToColor = (percentage, maxHue = 90, minHue = 10) => {
const hue = percentage * (maxHue - minHue) + minHue;
try {
return chroma(`hsl(${hue}, 90%, 40%)`).hex();
} catch (err) {
return badgeConstants.naColor;
}
};
/**
* Joins and array of string to one string after filtering out empty values
*
* @param {string[]} parts
* @param {string} connector
* @returns {string}
*/
exports.filterAndJoin = (parts, connector = "") => {
return parts.filter((part) => !!part && part !== "").join(connector);
};
/**
* Send a 403 response
* @param {Object} res Express response object
* @param {string} [msg=""] Message to send
*/
module.exports.send403 = (res, msg = "") => {
res.status(403).json({
"status": "fail",
"msg": msg,
});
};
/**
* Create gRPC client stib
* @param {Object} options from gRPC client
*/
module.exports.grpcQuery = async (options) => {
const { grpcUrl, grpcProtobufData, grpcServiceName, grpcEnableTls, grpcMethod, grpcBody } = options;
const protocObject = protojs.parse(grpcProtobufData);
const protoServiceObject = protocObject.root.lookupService(grpcServiceName);
const Client = grpc.makeGenericClientConstructor({});
const credentials = grpcEnableTls ? grpc.credentials.createSsl() : grpc.credentials.createInsecure();
const client = new Client(
grpcUrl,
credentials
);
const grpcService = protoServiceObject.create(function (method, requestData, cb) {
const fullServiceName = method.fullName;
const serviceFQDN = fullServiceName.split(".");
const serviceMethod = serviceFQDN.pop();
const serviceMethodClientImpl = `/${serviceFQDN.slice(1).join(".")}/${serviceMethod}`;
log.debug("monitor", `gRPC method ${serviceMethodClientImpl}`);
client.makeUnaryRequest(
serviceMethodClientImpl,
arg => arg,
arg => arg,
requestData,
cb);
}, false, false);
return new Promise((resolve, _) => {
return grpcService[`${grpcMethod}`](JSON.parse(grpcBody), function (err, response) {
const responseData = JSON.stringify(response);
if (err) {
return resolve({
code: err.code,
errorMessage: err.details,
data: ""
});
} else {
log.debug("monitor:", `gRPC response: ${response}`);
return resolve({
code: 1,
errorMessage: "",
data: responseData
});
}
});
});
};