uptime-kuma/src/util.ts

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/*!
// Common Util for frontend and backend
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//
// DOT NOT MODIFY util.js!
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// Need to run "npm run tsc" to compile if there are any changes.
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//
// Backend uses the compiled file util.js
// Frontend uses util.ts
*/
import * as dayjs from "dayjs";
// For loading dayjs plugins, don't remove event though it is not used in this file
// eslint-disable-next-line @typescript-eslint/no-unused-vars
import * as timezone from "dayjs/plugin/timezone";
// eslint-disable-next-line @typescript-eslint/no-unused-vars
import * as utc from "dayjs/plugin/utc";
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export const isDev = process.env.NODE_ENV === "development";
export const appName = "Uptime Kuma";
export const DOWN = 0;
export const UP = 1;
export const PENDING = 2;
export const MAINTENANCE = 3;
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export const STATUS_PAGE_ALL_DOWN = 0;
export const STATUS_PAGE_ALL_UP = 1;
export const STATUS_PAGE_PARTIAL_DOWN = 2;
export const STATUS_PAGE_MAINTENANCE = 3;
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export const SQL_DATE_FORMAT = "YYYY-MM-DD";
export const SQL_DATETIME_FORMAT = "YYYY-MM-DD HH:mm:ss";
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export const SQL_DATETIME_FORMAT_WITHOUT_SECOND = "YYYY-MM-DD HH:mm";
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export const MAX_INTERVAL_SECOND = 2073600; // 24 days
export const MIN_INTERVAL_SECOND = 20; // 20 seconds
// Console colors
// https://stackoverflow.com/questions/9781218/how-to-change-node-jss-console-font-color
export const CONSOLE_STYLE_Reset = "\x1b[0m";
export const CONSOLE_STYLE_Bright = "\x1b[1m";
export const CONSOLE_STYLE_Dim = "\x1b[2m";
export const CONSOLE_STYLE_Underscore = "\x1b[4m";
export const CONSOLE_STYLE_Blink = "\x1b[5m";
export const CONSOLE_STYLE_Reverse = "\x1b[7m";
export const CONSOLE_STYLE_Hidden = "\x1b[8m";
export const CONSOLE_STYLE_FgBlack = "\x1b[30m";
export const CONSOLE_STYLE_FgRed = "\x1b[31m";
export const CONSOLE_STYLE_FgGreen = "\x1b[32m";
export const CONSOLE_STYLE_FgYellow = "\x1b[33m";
export const CONSOLE_STYLE_FgBlue = "\x1b[34m";
export const CONSOLE_STYLE_FgMagenta = "\x1b[35m";
export const CONSOLE_STYLE_FgCyan = "\x1b[36m";
export const CONSOLE_STYLE_FgWhite = "\x1b[37m";
export const CONSOLE_STYLE_FgGray = "\x1b[90m";
export const CONSOLE_STYLE_FgOrange = "\x1b[38;5;208m";
export const CONSOLE_STYLE_FgLightGreen = "\x1b[38;5;119m";
export const CONSOLE_STYLE_FgLightBlue = "\x1b[38;5;117m";
export const CONSOLE_STYLE_FgViolet = "\x1b[38;5;141m";
export const CONSOLE_STYLE_FgBrown = "\x1b[38;5;130m";
export const CONSOLE_STYLE_FgPink = "\x1b[38;5;219m";
export const CONSOLE_STYLE_BgBlack = "\x1b[40m";
export const CONSOLE_STYLE_BgRed = "\x1b[41m";
export const CONSOLE_STYLE_BgGreen = "\x1b[42m";
export const CONSOLE_STYLE_BgYellow = "\x1b[43m";
export const CONSOLE_STYLE_BgBlue = "\x1b[44m";
export const CONSOLE_STYLE_BgMagenta = "\x1b[45m";
export const CONSOLE_STYLE_BgCyan = "\x1b[46m";
export const CONSOLE_STYLE_BgWhite = "\x1b[47m";
export const CONSOLE_STYLE_BgGray = "\x1b[100m";
const consoleModuleColors = [
CONSOLE_STYLE_FgCyan,
CONSOLE_STYLE_FgGreen,
CONSOLE_STYLE_FgLightGreen,
CONSOLE_STYLE_FgBlue,
CONSOLE_STYLE_FgLightBlue,
CONSOLE_STYLE_FgMagenta,
CONSOLE_STYLE_FgOrange,
CONSOLE_STYLE_FgViolet,
CONSOLE_STYLE_FgBrown,
CONSOLE_STYLE_FgPink,
];
const consoleLevelColors : Record<string, string> = {
"INFO": CONSOLE_STYLE_FgCyan,
"WARN": CONSOLE_STYLE_FgYellow,
"ERROR": CONSOLE_STYLE_FgRed,
"DEBUG": CONSOLE_STYLE_FgGray,
};
/**
* Flip the status of s
* @param s
*/
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export function flipStatus(s: number) {
if (s === UP) {
return DOWN;
}
if (s === DOWN) {
return UP;
}
return s;
}
/**
* Delays for specified number of seconds
* @param ms Number of milliseconds to sleep for
*/
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export function sleep(ms: number) {
return new Promise(resolve => setTimeout(resolve, ms));
}
/**
* PHP's ucfirst
* @param str
*/
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export function ucfirst(str: string) {
if (!str) {
return str;
}
const firstLetter = str.substr(0, 1);
return firstLetter.toUpperCase() + str.substr(1);
}
/**
* @deprecated Use log.debug (https://github.com/louislam/uptime-kuma/pull/910)
* @param msg
*/
export function debug(msg: unknown) {
log.log("", msg, "debug");
}
class Logger {
/**
* UPTIME_KUMA_HIDE_LOG=debug_monitor,info_monitor
*
* Example:
* [
* "debug_monitor", // Hide all logs that level is debug and the module is monitor
* "info_monitor",
* ]
*/
hideLog : Record<string, string[]> = {
info: [],
warn: [],
error: [],
debug: [],
};
/**
*
*/
constructor() {
if (typeof process !== "undefined" && process.env.UPTIME_KUMA_HIDE_LOG) {
const list = process.env.UPTIME_KUMA_HIDE_LOG.split(",").map(v => v.toLowerCase());
for (const pair of list) {
// split first "_" only
const values = pair.split(/_(.*)/s);
if (values.length >= 2) {
this.hideLog[values[0]].push(values[1]);
}
}
this.debug("server", "UPTIME_KUMA_HIDE_LOG is set");
this.debug("server", this.hideLog);
}
}
/**
* Write a message to the log
* @param module The module the log comes from
* @param msg Message to write
* @param level Log level. One of INFO, WARN, ERROR, DEBUG or can be customized.
*/
log(module: string, msg: any, level: string) {
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if (this.hideLog[level] && this.hideLog[level].includes(module.toLowerCase())) {
return;
}
module = module.toUpperCase();
level = level.toUpperCase();
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let now;
if (dayjs.tz) {
now = dayjs.tz(new Date()).format();
} else {
now = dayjs().format();
}
const levelColor = consoleLevelColors[level];
const moduleColor = consoleModuleColors[intHash(module, consoleModuleColors.length)];
let timePart = CONSOLE_STYLE_FgCyan + now + CONSOLE_STYLE_Reset;
let modulePart = "[" + moduleColor + module + CONSOLE_STYLE_Reset + "]";
let levelPart = levelColor + `${level}:` + CONSOLE_STYLE_Reset;
if (level === "INFO") {
console.info(timePart, modulePart, levelPart, msg);
} else if (level === "WARN") {
console.warn(timePart, modulePart, levelPart, msg);
} else if (level === "ERROR") {
let msgPart = CONSOLE_STYLE_FgRed + msg + CONSOLE_STYLE_Reset;
console.error(timePart, modulePart, levelPart, msgPart);
} else if (level === "DEBUG") {
if (isDev) {
timePart = CONSOLE_STYLE_FgGray + now + CONSOLE_STYLE_Reset;
let msgPart = CONSOLE_STYLE_FgGray + msg + CONSOLE_STYLE_Reset;
console.debug(timePart, modulePart, levelPart, msgPart );
}
} else {
console.log(timePart, modulePart, msg);
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}
}
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/**
* Log an INFO message
* @param module Module log comes from
* @param msg Message to write
*/
info(module: string, msg: unknown) {
this.log(module, msg, "info");
}
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/**
* Log a WARN message
* @param module Module log comes from
* @param msg Message to write
*/
warn(module: string, msg: unknown) {
this.log(module, msg, "warn");
}
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/**
* Log an ERROR message
* @param module Module log comes from
* @param msg Message to write
*/
error(module: string, msg: unknown) {
this.log(module, msg, "error");
}
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/**
* Log a DEBUG message
* @param module Module log comes from
* @param msg Message to write
*/
debug(module: string, msg: unknown) {
this.log(module, msg, "debug");
}
/**
* Log an exception as an ERROR
* @param module Module log comes from
* @param exception The exception to include
* @param msg The message to write
*/
exception(module: string, exception: unknown, msg: unknown) {
let finalMessage = exception;
if (msg) {
finalMessage = `${msg}: ${exception}`;
}
this.log(module, finalMessage, "error");
}
}
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export const log = new Logger();
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declare global { interface String { replaceAll(str: string, newStr: string): string; } }
/**
* 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
*/
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export function polyfill() {
if (!String.prototype.replaceAll) {
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String.prototype.replaceAll = function (str: string, newStr: string) {
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// 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);
};
}
}
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export class TimeLogger {
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startTime: number;
/**
*
*/
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constructor() {
this.startTime = dayjs().valueOf();
}
/**
* Output time since start of monitor
* @param name Name of monitor
*/
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print(name: string) {
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if (isDev && process.env.TIMELOGGER === "1") {
console.log(name + ": " + (dayjs().valueOf() - this.startTime) + "ms");
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}
}
}
/**
* Returns a random number between min (inclusive) and max (exclusive)
* @param min
* @param max
*/
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export function getRandomArbitrary(min: number, max: number) {
return Math.random() * (max - min) + min;
}
/**
* 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!
* @param min
* @param max
*/
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export function getRandomInt(min: number, max: number) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min + 1)) + min;
}
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/**
* Returns either the NodeJS crypto.randomBytes() function or its
* browser equivalent implemented via window.crypto.getRandomValues()
*/
const getRandomBytes = (
(typeof window !== "undefined" && window.crypto)
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// Browsers
? function () {
return (numBytes: number) => {
const randomBytes = new Uint8Array(numBytes);
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for (let i = 0; i < numBytes; i += 65536) {
window.crypto.getRandomValues(randomBytes.subarray(i, i + Math.min(numBytes - i, 65536)));
}
return randomBytes;
};
}
// Node
: function () {
// eslint-disable-next-line @typescript-eslint/no-var-requires
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return require("crypto").randomBytes;
}
)();
/**
* Get a random integer suitable for use in cryptography between upper
* and lower bounds.
* @param min Minimum value of integer
* @param max Maximum value of integer
* @returns Cryptographically suitable random integer
*/
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export function getCryptoRandomInt(min: number, max: number):number {
// 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.");
}
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let tmpRange = range;
let bitsNeeded = 0;
let bytesNeeded = 0;
let mask = 1;
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while (tmpRange > 0) {
if (bitsNeeded % 8 === 0) {
bytesNeeded += 1;
}
bitsNeeded += 1;
mask = mask << 1 | 1;
tmpRange = tmpRange >>> 1;
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}
const randomBytes = getRandomBytes(bytesNeeded);
let randomValue = 0;
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for (let i = 0; i < bytesNeeded; i++) {
randomValue |= randomBytes[i] << 8 * i;
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}
randomValue = randomValue & mask;
if (randomValue <= range) {
return min + randomValue;
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} else {
return getCryptoRandomInt(min, max);
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}
}
/**
* Generate a random alphanumeric string of fixed length
* @param length Length of string to generate
* @returns string
*/
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export function genSecret(length = 64) {
let secret = "";
const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
const charsLength = chars.length;
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for ( let i = 0; i < length; i++ ) {
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secret += chars.charAt(getCryptoRandomInt(0, charsLength - 1));
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}
return secret;
}
/**
* Get the path of a monitor
* @param id ID of monitor
* @returns Formatted relative path
*/
export function getMonitorRelativeURL(id: string) {
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return "/dashboard/" + id;
}
/**
* Get relative path for maintenance
* @param id ID of maintenance
* @returns Formatted relative path
*/
export function getMaintenanceRelativeURL(id: string) {
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return "/maintenance/" + id;
}
/**
* Parse to Time Object that used in VueDatePicker
* @param {string} time E.g. 12:00
* @returns object
*/
export function parseTimeObject(time: string) {
if (!time) {
return {
hours: 0,
minutes: 0,
};
}
const array = time.split(":");
if (array.length < 2) {
throw new Error("parseVueDatePickerTimeFormat: Invalid Time");
}
const obj = {
hours: parseInt(array[0]),
minutes: parseInt(array[1]),
seconds: 0,
};
if (array.length >= 3) {
obj.seconds = parseInt(array[2]);
}
return obj;
}
/**
* @param obj
* @returns string e.g. 12:00
*/
export function parseTimeFromTimeObject(obj : any) {
if (!obj) {
return obj;
}
let result = "";
result += obj.hours.toString().padStart(2, "0") + ":" + obj.minutes.toString().padStart(2, "0");
if (obj.seconds) {
result += ":" + obj.seconds.toString().padStart(2, "0");
}
return result;
}
/**
* Convert ISO date to UTC
* @param input Date
* @returns ISO Date time
*/
export function isoToUTCDateTime(input : string) {
return dayjs(input).utc().format(SQL_DATETIME_FORMAT);
}
/**
* @param input
*/
export function utcToISODateTime(input : string) {
return dayjs.utc(input).toISOString();
}
/**
* For SQL_DATETIME_FORMAT
* @param input
* @param format
* @returns A string date of SQL_DATETIME_FORMAT
*/
export function utcToLocal(input : string, format = SQL_DATETIME_FORMAT) : string {
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return dayjs.utc(input).local().format(format);
}
/**
* Convert local datetime to UTC
* @param input Local date
* @param format Format to return
* @returns Date in requested format
*/
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export function localToUTC(input : string, format = SQL_DATETIME_FORMAT) {
return dayjs(input).utc().format(format);
}
/**
* Generate a decimal integer number from a string
* @param str Input
* @param length Default is 10 which means 0 - 9
*/
export function intHash(str : string, length = 10) : number {
// A simple hashing function (you can use more complex hash functions if needed)
let hash = 0;
for (let i = 0; i < str.length; i++) {
hash += str.charCodeAt(i);
}
// Normalize the hash to the range [0, 10]
return (hash % length + length) % length; // Ensure the result is non-negative
}