RocketChat/Rocket.Chat

import { SystemLogger } from '../../../../server/lib/logger/system';
import { settings } from '../../../settings/server';
import type { ILoginAttempt } from '../ILoginAttempt';

export const logFailedLoginAttempts = (login: ILoginAttempt): void => {
    if (!settings.get('Login_Logs_Enabled')) {
        return;
    }

    let user = 'unknown';
    if (login.methodArguments[0]?.user?.username && settings.get('Login_Logs_Username')) {
        user = login.methodArguments[0]?.user?.username;
    }
    const { connection } = login;
    let { clientAddress } = connection;
    if (!settings.get('Login_Logs_ClientIp')) {
        clientAddress = '-';
    }
    let forwardedFor = connection.httpHeaders?.['x-forwarded-for'];
    let realIp = connection.httpHeaders?.['x-real-ip'];
    if (!settings.get('Login_Logs_ForwardedForIp')) {
        forwardedFor = '-';
        realIp = '-';
    }
    let userAgent = connection.httpHeaders?.['user-agent'];
    if (!settings.get('Login_Logs_UserAgent')) {
        userAgent = '-';
    }
    SystemLogger.info(
        `Failed login detected - Username[${user}] ClientAddress[${clientAddress}] ForwardedFor[${forwardedFor}] XRealIp[${realIp}] UserAgent[${userAgent}]`,
    );
};