Files
kapteins-daagbok/client/src/utils/signatures.ts
T
elpatron 585ef788df fix: Rückgabetyp von fingerprintSignature für Passkey-Signaturen korrigieren
Behebt den TypeScript-Buildfehler, da Passkey-Signaturen Objekte und keine Strings sind.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-30 11:14:15 +02:00

80 lines
2.6 KiB
TypeScript

import { hashEntryForSigning } from './entryCanonicalHash.js'
import type { PasskeySignature, SignatureValue } from '../types/signatures.js'
export type SkipperSignStatus = 'none' | 'valid' | 'invalid'
export function isSignatureImage(value: string | undefined | null): boolean {
return typeof value === 'string' && value.startsWith('data:image/')
}
export function isPasskeySignature(value: unknown): value is PasskeySignature {
return (
typeof value === 'object' &&
value !== null &&
(value as PasskeySignature).kind === 'passkey' &&
(value as PasskeySignature).version === 1
)
}
export function normalizeSignature(value: unknown): SignatureValue | undefined {
if (value === null || value === undefined || value === '') return undefined
if (isPasskeySignature(value)) return value
if (typeof value === 'string') return value
return undefined
}
export function hasAnySignature(
skipper: SignatureValue | '' | undefined,
crew: SignatureValue | '' | undefined
): boolean {
return !!(skipper || crew)
}
export function isSignatureValidForEntry(sig: PasskeySignature, entryHash: string): boolean {
return sig.entryHash === entryHash
}
export async function getSkipperSignStatus(
entry: Record<string, unknown>
): Promise<SkipperSignStatus> {
const signSkipper = normalizeSignature(entry.signSkipper)
if (!signSkipper) return 'none'
if (!isPasskeySignature(signSkipper)) return 'valid'
const hash = await hashEntryForSigning(entry)
return isSignatureValidForEntry(signSkipper, hash) ? 'valid' : 'invalid'
}
export interface SignatureExportLabels {
imagePlaceholder: string
passkeyLabel: (username: string, signedAt: string) => string
}
export function formatSignatureForExport(
value: SignatureValue | undefined | null,
labels: SignatureExportLabels
): string {
if (!value) return ''
if (isPasskeySignature(value)) {
return labels.passkeyLabel(value.username, value.signedAt)
}
if (isSignatureImage(value)) return labels.imagePlaceholder
return value
}
export function serializeSignature(value: SignatureValue | '' | undefined): SignatureValue | undefined {
if (!value) return undefined
if (isPasskeySignature(value)) return value
if (isSignatureImage(value)) return value
const trimmed = value.trim()
return trimmed || undefined
}
/** Normalize then serialize — canonical form for persistence and dirty-check fingerprints. */
export function normalizedSerializedSignature(value: unknown): SignatureValue | undefined {
return serializeSignature(normalizeSignature(value) || '')
}
export function fingerprintSignature(value: unknown): SignatureValue | '' {
return normalizedSerializedSignature(value) ?? ''
}