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Reject extra session token segments (#18)

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Autowebassat-blip 2026-06-12 06:04:25 +02:00 • committed by GitHub
parent aa7eb32c36
commit d558554da3
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2 changed files with 5 additions and 2 deletions
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3
apps/logicsrc-web/contract/logicsrc-web.contract.test.ts
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@ -376,7 +376,8 @@ describe("session signing", () => {
process.env.LOGICSRC_SESSION_SECRET = "session_secret_for_tests"; process.env.LOGICSRC_SESSION_SECRET = "session_secret_for_tests";
const token = signSession({ provider: "coinpay", sub: "merchant-123" }); const token = signSession({ provider: "coinpay", sub: "merchant-123" });
expect(verifySession(token)).toMatchObject({ provider: "coinpay", sub: "merchant-123" }); expect(verifySession(token)).toMatchObject({ provider: "coinpay", sub: "merchant-123" });
expect(verifySession(`${token}tampered`)).toBeNull(); expect(verifySession(`tampered`)).toBeNull();
expect(verifySession(`.extra`)).toBeNull();
}); });
}); });

4
apps/logicsrc-web/src/lib/coinpay.ts
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@ -160,7 +160,9 @@ export function signSession(payload: Record<string, unknown>): string {
} }
export function verifySession(value: string): Record<string, unknown> | null { export function verifySession(value: string): Record<string, unknown> | null {
const [encoded, signature] = value.split("."); const parts = value.split(".");
if (parts.length !== 2) return null;
const [encoded, signature] = parts;
if (!encoded || !signature) return null; if (!encoded || !signature) return null;
const expected = createHmac("sha256", getSessionSecret()).update(encoded).digest("base64url"); const expected = createHmac("sha256", getSessionSecret()).update(encoded).digest("base64url");