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ash / components / kcer / cert_cache.h [blame]
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_COMPONENTS_KCER_CERT_CACHE_H_
#define ASH_COMPONENTS_KCER_CERT_CACHE_H_
#include <stdint.h>
#include <set>
#include <vector>
#include "base/component_export.h"
#include "base/containers/span.h"
#include "base/memory/scoped_refptr.h"
namespace kcer {
class Cert;
namespace internal {
// Cache for a collection of scoped_refptr<const Cert>-s.
class COMPONENT_EXPORT(KCER) CertCache {
public:
// Empty cache.
CertCache();
// Cache that contains `certs` (`certs` can be unsorted).
explicit CertCache(base::span<const scoped_refptr<const Cert>> certs);
CertCache(CertCache&&);
CertCache& operator=(CertCache&&);
~CertCache();
// Searches for Cert certificate with the same content as `cert_der` and
// returns a scoped_refptr<const Cert> on success, a nullptr if `cert` was not
// found.
scoped_refptr<const Cert> FindCert(
const base::span<const uint8_t>& cert_der) const;
// Returns ref-counting pointers to all certificate from the cache.
std::vector<scoped_refptr<const Cert>> GetAllCerts() const;
private:
// Comparator for sorting scoped_refptr<const Cert>-s and for enabling
// std::set::find() using the base::span<const uint8_t> representation of a
// cert.
struct CertComparator {
using is_transparent = void;
bool operator()(const scoped_refptr<const Cert>& a,
const base::span<const uint8_t>& b) const;
bool operator()(const base::span<const uint8_t>& a,
const scoped_refptr<const Cert>& b) const;
bool operator()(const scoped_refptr<const Cert>& a,
const scoped_refptr<const Cert>& b) const;
};
std::set<scoped_refptr<const Cert>, CertComparator> certs_;
};
} // namespace internal
} // namespace kcer
#endif // ASH_COMPONENTS_KCER_CERT_CACHE_H_