Function validate_exp

crates/openshell-server/src/auth/sandbox_jwt.rs:223–234

(exp: i64)

#[allow(clippy::result_large_err)]
fn validate_exp(exp: i64) -> Result<(), Status> {
    if exp == 0 {
        return Ok(());
    }

    if exp < now_secs().saturating_sub(SANDBOX_JWT_EXP_LEEWAY_SECS) {
        debug!("sandbox JWT expired");
        return Err(Status::unauthenticated("invalid token: ExpiredSignature"));
    }

    Ok(())
}

fn now_secs() -> i64 {
    i64::try_from(