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8c86c988c1
Uniform stock management for healthcare linen rooms: the coordinator app, the phone counter and the staff app, for your own server. Built from 2d04e45 on 2026-09-15. Licensed under the Functional Source License (FSL-1.1-ALv2).
59 lines
3.3 KiB
TypeScript
59 lines
3.3 KiB
TypeScript
// Cloudflare Turnstile server-side verification for sign-in / sign-up.
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//
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// Configured by two variables that have to agree: TURNSTILE_SECRET here, and
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// NEXT_PUBLIC_TURNSTILE_SITEKEY in the browser, which is baked in at build time. Local dev and the
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// e2e suites run with neither, and every check is skipped.
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//
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// In production it fails *closed*. A rebuilt secrets file that drops TURNSTILE_SECRET used to take
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// bot protection off sign-in, sign-up, password reset, the contact form and the newsletter with no
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// error, no log line and nothing visible — which is the worst shape a security control can fail in.
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// Now the checks refuse instead, and instrumentation.ts stops the server from starting at all, so
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// the missing variable is found on deploy rather than after it has been exploited.
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export const turnstileEnabled = () => !!process.env.TURNSTILE_SECRET;
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/* TURNSTILE_OPTIONAL=1 is the one way out, and it exists for a real case: a local `next start`
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* smoke test runs with NODE_ENV=production against a machine that has no Cloudflare keys and no
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* business having them. It is never set in a production secrets file, so it cannot quietly
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* disarm the live site the way a *missing* variable used to. */
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export const turnstileRequired = () =>
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process.env.NODE_ENV === "production" && process.env.TURNSTILE_OPTIONAL !== "1"
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// A Community instance has no Cloudflare account to lean on. Turnstile stays available to it —
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// set both keys and it is enforced — but its absence is not a misconfiguration there; the
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// per-address rate limits on every auth route are what stands in its place.
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&& process.env.EDITION !== "community";
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export async function verifyTurnstile(token: unknown, ip: string): Promise<string | null> {
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const secret = process.env.TURNSTILE_SECRET;
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if (!secret) {
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if (!turnstileRequired()) return null;
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console.error("[turnstile] TURNSTILE_SECRET is not set in production — refusing the request");
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return "Security check unavailable — please try again in a moment.";
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}
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const t = typeof token === "string" ? token.slice(0, 2048) : "";
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if (!t) return "Please complete the security check.";
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try {
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const r = await fetch("https://challenges.cloudflare.com/turnstile/v0/siteverify", {
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method: "POST", headers: { "content-type": "application/json" },
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body: JSON.stringify({ secret, response: t, remoteip: ip }),
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signal: AbortSignal.timeout(6000),
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});
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const j = (await r.json()) as { success?: boolean; "error-codes"?: string[] };
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if (!j.success) return "Security check failed — please try again.";
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return null;
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} catch {
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return "Security check unavailable — please try again in a moment.";
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}
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}
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/**
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* The pair of variables the checks need, as they are at boot.
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*
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* The site key is read as a plain static reference on purpose: NEXT_PUBLIC_ values are substituted
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* at build time, so this reports what the browser bundle actually got. That catches the mirror
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* failure — a secret present but no site key compiled in, where no widget renders, no token is
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* posted, and every sign-in answers "Please complete the security check."
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*/
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export function turnstileConfig(): { secret: boolean; sitekey: boolean } {
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return { secret: !!process.env.TURNSTILE_SECRET, sitekey: !!process.env.NEXT_PUBLIC_TURNSTILE_SITEKEY };
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}
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