Mattsson
52 lines
1.8 KiB
TypeScript
52 lines
1.8 KiB
TypeScript
/**
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* Client-side Cloudflare Turnstile rollout state for Supabase Auth.
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*
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* The public site key is intentionally safe to ship to the browser. The
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* matching secret stays in Supabase Auth and must never be added to this app.
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* A generic Docker image contains the sentinel below until its entrypoint
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* substitutes the operator's runtime value, so an unsubstituted sentinel must
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* fail open as "disabled" rather than render a broken widget.
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*/
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export const TURNSTILE_SITE_KEY_ENV = 'NEXT_PUBLIC_TURNSTILE_SITE_KEY'
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const UNCONFIGURED_SITE_KEYS = new Set([
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'',
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'__NEXT_PUBLIC_TURNSTILE_SITE_KEY__',
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])
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export type TurnstileRolloutState = 'disabled' | 'client-enabled'
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export function resolveTurnstileSiteKey(
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value: string | undefined = process.env.NEXT_PUBLIC_TURNSTILE_SITE_KEY,
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): string | null {
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const siteKey = value?.trim() ?? ''
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return UNCONFIGURED_SITE_KEYS.has(siteKey) ? null : siteKey
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}
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export function getTurnstileRolloutState(
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value: string | undefined = process.env.NEXT_PUBLIC_TURNSTILE_SITE_KEY,
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): TurnstileRolloutState {
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return resolveTurnstileSiteKey(value) ? 'client-enabled' : 'disabled'
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}
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export function captchaTokenOptions(
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token: string | null | undefined,
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): { captchaToken?: string } {
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const captchaToken = token?.trim()
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return captchaToken ? { captchaToken } : {}
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}
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/**
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* Missing CAPTCHA configuration is an intentional rollout state: existing
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* Auth flows keep working until the public site key is deployed. Once a site
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* key exists, every protected form fails closed until Turnstile supplies a
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* token.
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*/
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export function isTurnstileSubmissionBlocked(
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token: string | null | undefined,
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siteKeyValue: string | undefined = process.env.NEXT_PUBLIC_TURNSTILE_SITE_KEY,
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): boolean {
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return resolveTurnstileSiteKey(siteKeyValue) !== null && !captchaTokenOptions(token).captchaToken
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}
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