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bctf

The updated website for b01lers CTF!

This website was heavily inspired by LA CTF and the default rCTF frontend.

Running locally

This is a custom Next.js frontend wrapping rCTF as a backend. To configure rCTF, edit the config files in /conf.d as normal. In conf.d,

  • 01-ui.yaml defines rCTF's UI config values. These values are mostly ignored by the custom frontend, but necessary for styling certain things that we don't have full control over (ex. the email template).
  • 02-ctf.yaml defines metadata for the actual CTF, including divisions, start / end time, and the frontend URL.
  • 03-db.yaml defines config options for rCTF's underlying databases.
  • 04-email.yaml defines config options for email verification. This includes an API key so isn't committed, but an example is included in 04-email.example.yaml.
  • 05-uploads.yaml defines config options for GCS uploads. This includes a private key and service account email so isn't committed, but an example is included in 05-uploads.example.yaml.
  • 06-secrets.yaml defines secret rCTF values such as the token key.

To run just the frontend, first install dependencies with

npm i

In next.config.js, set RCTF_BASE to the public URL of the backend rCTF instance, and KLODD_URL to the public URL of the Klodd instancer frontend:

const RCTF_BASE = 'http://ctf.b01lers.com:9000';

const nextConfig = {
    env: {
        API_BASE: `${RCTF_BASE}/api/v1`,
        KLODD_URL: 'https://klodd.localhost.direct'
    },
    // ...
}

Then, run

npm run dev

to start the development server on localhost:3000.

To start rCTF, you'll need a .env file in the project root exporting database credentials:

RCTF_DATABASE_PASSWORD=...
RCTF_REDIS_PASSWORD=...
RCTF_GIT_REF=master

(this file can be copied after running rCTF's install script).

You can then start both the rCTF backend and production frontend instance simultaneously with

docker compose up -d --build

Configuring

Further config options can be edited in /util/config.ts:

export const SOLVES_PAGE_SIZE = 10;
export const SCOREBOARD_PAGE_SIZE = 100;

export const AUTH_COOKIE_NAME = 'ctf_clearance';
  • SOLVES_PAGE_SIZE — The number of solves to show on each page of the solves modal.
  • SCOREBOARD_PAGE_SIZE — The number of teams to show on each page of the scoreboard.
  • AUTH_COOKIE_NAME — The name of the auth token cookie.