uptime-kuma/src/util.js
2021-10-18 17:51:40 +08:00

168 lines
5.4 KiB
JavaScript

"use strict";
// Common Util for frontend and backend
//
// DOT NOT MODIFY util.js!
// Need to run "tsc" to compile if there are any changes.
//
// Backend uses the compiled file util.js
// Frontend uses util.ts
Object.defineProperty(exports, "__esModule", { value: true });
exports.getMonitorRelativeURL = exports.genSecret = exports.getCryptoRandomInt = exports.getRandomInt = exports.getRandomArbitrary = exports.TimeLogger = exports.polyfill = exports.debug = exports.ucfirst = exports.sleep = exports.flipStatus = exports.STATUS_PAGE_PARTIAL_DOWN = exports.STATUS_PAGE_ALL_UP = exports.STATUS_PAGE_ALL_DOWN = exports.PENDING = exports.UP = exports.DOWN = exports.appName = exports.isDev = void 0;
const _dayjs = require("dayjs");
const dayjs = _dayjs;
exports.isDev = process.env.NODE_ENV === "development";
exports.appName = "Uptime Kuma";
exports.DOWN = 0;
exports.UP = 1;
exports.PENDING = 2;
exports.STATUS_PAGE_ALL_DOWN = 0;
exports.STATUS_PAGE_ALL_UP = 1;
exports.STATUS_PAGE_PARTIAL_DOWN = 2;
function flipStatus(s) {
if (s === exports.UP) {
return exports.DOWN;
}
if (s === exports.DOWN) {
return exports.UP;
}
return s;
}
exports.flipStatus = flipStatus;
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
exports.sleep = sleep;
/**
* PHP's ucfirst
* @param str
*/
function ucfirst(str) {
if (!str) {
return str;
}
const firstLetter = str.substr(0, 1);
return firstLetter.toUpperCase() + str.substr(1);
}
exports.ucfirst = ucfirst;
function debug(msg) {
if (exports.isDev) {
console.log(msg);
}
}
exports.debug = debug;
function polyfill() {
/**
* String.prototype.replaceAll() polyfill
* https://gomakethings.com/how-to-replace-a-section-of-a-string-with-another-one-with-vanilla-js/
* @author Chris Ferdinandi
* @license MIT
*/
if (!String.prototype.replaceAll) {
String.prototype.replaceAll = function (str, newStr) {
// If a regex pattern
if (Object.prototype.toString.call(str).toLowerCase() === "[object regexp]") {
return this.replace(str, newStr);
}
// If a string
return this.replace(new RegExp(str, "g"), newStr);
};
}
}
exports.polyfill = polyfill;
class TimeLogger {
constructor() {
this.startTime = dayjs().valueOf();
}
print(name) {
if (exports.isDev && process.env.TIMELOGGER === "1") {
console.log(name + ": " + (dayjs().valueOf() - this.startTime) + "ms");
}
}
}
exports.TimeLogger = TimeLogger;
/**
* Returns a random number between min (inclusive) and max (exclusive)
*/
function getRandomArbitrary(min, max) {
return Math.random() * (max - min) + min;
}
exports.getRandomArbitrary = getRandomArbitrary;
/**
* From: https://stackoverflow.com/questions/1527803/generating-random-whole-numbers-in-javascript-in-a-specific-range
*
* Returns a random integer between min (inclusive) and max (inclusive).
* The value is no lower than min (or the next integer greater than min
* if min isn't an integer) and no greater than max (or the next integer
* lower than max if max isn't an integer).
* Using Math.round() will give you a non-uniform distribution!
*/
function getRandomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min + 1)) + min;
}
exports.getRandomInt = getRandomInt;
/**
* Returns either the NodeJS crypto.randomBytes() function or its
* browser equivalent implemented via window.crypto.getRandomValues()
*/
let getRandomBytes = ((typeof window !== 'undefined' && window.crypto)
// Browsers
? function () {
return (numBytes) => {
let randomBytes = new Uint8Array(numBytes);
for (let i = 0; i < numBytes; i += 65536) {
window.crypto.getRandomValues(randomBytes.subarray(i, i + Math.min(numBytes - i, 65536)));
}
return randomBytes;
};
}
// Node
: function () {
return require("crypto").randomBytes;
})();
function getCryptoRandomInt(min, max) {
// synchronous version of: https://github.com/joepie91/node-random-number-csprng
const range = max - min;
if (range >= Math.pow(2, 32))
console.log("Warning! Range is too large.");
let tmpRange = range;
let bitsNeeded = 0;
let bytesNeeded = 0;
let mask = 1;
while (tmpRange > 0) {
if (bitsNeeded % 8 === 0)
bytesNeeded += 1;
bitsNeeded += 1;
mask = mask << 1 | 1;
tmpRange = tmpRange >>> 1;
}
const randomBytes = getRandomBytes(bytesNeeded);
let randomValue = 0;
for (let i = 0; i < bytesNeeded; i++) {
randomValue |= randomBytes[i] << 8 * i;
}
randomValue = randomValue & mask;
if (randomValue <= range) {
return min + randomValue;
}
else {
return getCryptoRandomInt(min, max);
}
}
exports.getCryptoRandomInt = getCryptoRandomInt;
function genSecret(length = 64) {
let secret = "";
const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
const charsLength = chars.length;
for (let i = 0; i < length; i++) {
secret += chars.charAt(getCryptoRandomInt(0, charsLength - 1));
}
return secret;
}
exports.genSecret = genSecret;
function getMonitorRelativeURL(id) {
return "/dashboard/" + id;
}
exports.getMonitorRelativeURL = getMonitorRelativeURL;