Mattsson
1c9d378df8
* feat(auth): enforce session idle and absolute timeouts Hosted browser sessions now carry an HMAC-signed, HttpOnly cookie holding session start, last activity and sign-in method, bound to the Supabase session. Middleware enforces a 30 min idle and 12 h absolute limit (reason-coded redirects to /login), a heartbeat route advances idle activity from real user input, and a client controller warns 2 minutes before expiry. BankID users are routed back to BankID on re-auth via a short-lived method hint. API-key and MCP bearer surfaces are exempt; self-hosted installs default off and can opt in via env vars. Fixes #362 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(auth): derive session-timeout signing key via HKDF The HMAC key is now HKDF-derived with a purpose-bound info string, so the SUPABASE_SERVICE_ROLE_KEY fallback never uses the privileged credential directly as a signing key. Addresses the security review finding on PR #1387. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(auth): back signature bytes with a plain ArrayBuffer crypto.subtle.verify requires a BufferSource; Uint8Array.from is typed over ArrayBufferLike, which the Vercel TypeScript build rejects. Decode base64url into a Uint8Array constructed over a fresh ArrayBuffer. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(auth): address session-timeout review findings - signSessionTimeoutState returns null on signing failure instead of throwing, so a missing secret degrades the timeout feature in line with verifySessionTimeoutState rather than crashing authenticated requests; middleware and heartbeat skip the cookie write when null - heartbeat initializes a fresh signed state for a missing or session-mismatched cookie, mirroring middleware, instead of returning SESSION_EXPIRED during normal initialization - sessionStateMatchesUser treats an unresolved current session id as a mismatch for session-bound state so another session's cookie is never accepted on the userId fallback alone - drop aria-live from the countdown DialogDescription so screen readers are not interrupted every second Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
29 lines
984 B
TypeScript
29 lines
984 B
TypeScript
export const SESSION_TIMEOUT_COOKIE = 'gnubok-session-timeout'
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export const SESSION_AUTH_METHOD_HINT_COOKIE = 'gnubok-auth-method'
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export const SESSION_TIMEOUT_CHANNEL = 'gnubok-session-timeout'
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export type SessionAuthMethod = 'password' | 'bankid'
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export type SessionTimeoutReason = 'idle' | 'absolute'
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export interface SessionTimeoutClientState {
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enabled: boolean
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idleTimeoutMs: number
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absoluteTimeoutMs: number
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warningMs: number
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serverNow: number
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startedAt: number
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lastActivityAt: number
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method: SessionAuthMethod
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}
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export function isSessionAuthMethod(value: unknown): value is SessionAuthMethod {
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return value === 'password' || value === 'bankid'
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}
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export function setSessionAuthMethodHint(method: SessionAuthMethod): void {
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if (typeof document === 'undefined') return
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const secure = window.location.protocol === 'https:' ? '; Secure' : ''
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document.cookie = `${SESSION_AUTH_METHOD_HINT_COOKIE}=${method}; Path=/; Max-Age=300; SameSite=Lax${secure}`
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}
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