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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_CHAPS_UTIL_TEST_UTIL_H_
#define CHROMEOS_ASH_COMPONENTS_CHAPS_UTIL_TEST_UTIL_H_
#include <pk11pub.h>
#include <stdint.h>
#include <memory>
#include <string>
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "chromeos/ash/components/chaps_util/chaps_util.h"
#include "crypto/scoped_nss_types.h"
namespace chromeos {
// A fake implementation of ChapsUtil which actually just generates a key pair
// through NSS.
class FakeChapsUtil : public ChapsUtil {
public:
using OnKeyGenerated = base::RepeatingCallback<void(const std::string& spki)>;
explicit FakeChapsUtil(OnKeyGenerated on_key_generated);
~FakeChapsUtil() override;
bool GenerateSoftwareBackedRSAKey(
PK11SlotInfo* slot,
uint16_t num_bits,
crypto::ScopedSECKEYPublicKey* out_public_key,
crypto::ScopedSECKEYPrivateKey* out_private_key) override;
private:
OnKeyGenerated on_key_generated_;
};
// While an instance of this class exists, ChapsUtil::Create() will return
// instances of FakeChapsUtil (see above). Only one instance of this class
// should exist at a time.
class ScopedChapsUtilOverride {
public:
// Sets up ChapsUtil to return instances of FakeChapsUtil (see above) from
// ChapsUtil::Create().
ScopedChapsUtilOverride();
// Reverts the changes performed by the constructor.
~ScopedChapsUtilOverride();
// Returns all der-encoded SPKIs that were generated through ChapsUtil
// instances returned from ChapsUtil::Create() while this override was active,
// i.e. since this instances has been constructed.
const std::vector<std::string>& generated_key_spkis() {
return generated_key_spkis_;
}
private:
std::unique_ptr<ChapsUtil> CreateChapsUtil();
// Called when a FakeChapsUtil instance created by CreateChapsUtil generates a
// key pair.
void OnKeyGenerated(const std::string& spki);
// Tracks key pairs that were generated through FakeChapsUtil instances
// created by CreateChapsUtil().
std::vector<std::string> generated_key_spkis_;
base::WeakPtrFactory<ScopedChapsUtilOverride> weak_ptr_factory_{this};
};
} // namespace chromeos
#endif // CHROMEOS_ASH_COMPONENTS_CHAPS_UTIL_TEST_UTIL_H_
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