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Add a function that checks a Cloudflare Turnstile token on the server

Cerrado Apto para principiantes
#228 0 comentarios 0 reacciones 0 asignados Ver en GitHub

Los mantenedores suelen responder en 1 día

@bhushan4work ya está trabajando en esto.

Desde el 21/10/2026.

  • #282 de @bhushan4work — fusionado

Evaluación

Dificultad
2/5
Tiempo estimado
1-3 horas
Aptitud para principiantes
88/100
Tipo de issue
Nueva funcionalidad
Claridad
Bien especificado
Estado de actividad
Activo
Stack tecnológico
typescript
Área
backend, security

Línea de trabajo

Lee packages/server/src/webhook.ts para ver el patrón existente de timeout de fetch y packages/server/tests/webhook-delivery.test.ts para ver cómo se simula fetch. Implementa packages/server/src/security/turnstile.ts y añade las pruebas especificadas en packages/server/tests/security/turnstile.test.ts. El trabajo estará terminado cuando se cumplan los criterios de aceptación, incluidos los campos de la solicitud, los casos de discrepancia y los errores que no deben lanzar excepciones ni exponer el secreto.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

enhancement hacktoberfest help wanted server

ChatCops is getting optional Cloudflare Turnstile checks: the widget gets a token from Turnstile when a visitor first opens the chat, and the server checks it before it starts a session. This issue is the server half of that check, as one small function in a new file. Wiring it into a route comes later, so this PR doesn't touch anything else.

What to do
Create packages/server/src/security/turnstile.ts with:

export interface TurnstileConfig {
  secretKey: string;
  /** The action set in the widget, if any. A token for another action is rejected. */
  action?: string;
  /** Hostnames the token may come from. Unset means any. */
  expectedHostnames?: string[];
  /** Default 5000. */
  timeoutMs?: number;
}

export type TurnstileResult =
  | { ok: true; hostname?: string; action?: string }
  | { ok: false; code: 'missing_token' | 'invalid_token' | 'hostname_mismatch' | 'action_mismatch' | 'unavailable'; errorCodes?: string[] };

export async function verifyTurnstile(
  token: string | undefined,
  config: TurnstileConfig,
  opts?: { remoteIp?: string; idempotencyKey?: string; fetch?: typeof fetch }
): Promise<TurnstileResult>;
  • POST to https://challenges.cloudflare.com/turnstile/v0/siteverify as described in Cloudflare's server-side validation docs, with secret, response, remoteip (when given) and idempotency_key (when given).
  • A token can only be redeemed once. The idempotency_key lets the server retry the same check after a network error without it failing as already used, so pass it through.
  • Return missing_token without calling the API when the token is empty, and unavailable when the request fails, times out (AbortSignal.timeout) or doesn't return JSON. Never throw.
  • Check hostname and action from the response against the config.
  • Use opts.fetch ?? globalThis.fetch, so tests can pass a fake. Don't import anything from Node; this has to run on Workers too.

Where to look

  • packages/server/src/webhook.ts has a similar fetch with a timeout
  • packages/server/tests/webhook-delivery.test.ts shows how the tests fake fetch

Acceptance criteria

  • New packages/server/src/security/turnstile.ts and packages/server/tests/security/turnstile.test.ts
  • Tests cover success, success: false with error codes, hostname and action mismatch, an empty token (no request sent), a network error, a timeout and a non-JSON reply
  • A test checks the request body, including idempotency_key and remoteip
  • The secret never appears in a returned value or in a log line
  • Not exported from @chatcops/server yet, and no changeset needed (pnpm changeset --empty)
  • pnpm test:coverage and pnpm lint pass

Want to work on this? Comment below and I'll assign it to you. Please take one issue at a time, branch off dev, and open your PR against dev with Closes #<this issue number>. Setup notes (pnpm, build before test) are in CONTRIBUTING.md.

Lenguaje dominante
TypeScript
Estrellas
13
Forks
7
Merge medio
3 h 33 min
PR fusionados (30 d)
176

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

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