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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 CHROME_BROWSER_K_ANONYMITY_SERVICE_K_ANONYMITY_SERVICE_STORAGE_H_
#define CHROME_BROWSER_K_ANONYMITY_SERVICE_K_ANONYMITY_SERVICE_STORAGE_H_
#include <optional>
#include <string>
#include "base/containers/flat_map.h"
#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/time/time.h"
#include "url/origin.h"
struct OHTTPKeyAndExpiration {
// The OHTTP key in this struct is formatted as described in
// https://www.ietf.org/archive/id/draft-ietf-ohai-ohttp-02.html#name-key-configuration-encoding
std::string key; // OHTTP key
base::Time expiration;
};
struct KeyAndNonUniqueUserId {
std::string key_commitment; // trust token key commitment (specific to
// `non_unique_user_id`)
int non_unique_user_id; // Non-unique ID assigned to this user for k-anon
// reporting
};
struct KeyAndNonUniqueUserIdWithExpiration {
KeyAndNonUniqueUserId key_and_id;
base::Time expiration;
};
class KAnonymityServiceStorage {
public:
enum InitStatus {
kInitOk,
kInitError,
// kInitNotReady is only be used internally, not as a response to
// WaitUntilReady.
kInitNotReady,
};
virtual ~KAnonymityServiceStorage();
virtual void WaitUntilReady(
base::OnceCallback<void(InitStatus)> on_ready) = 0;
virtual std::optional<OHTTPKeyAndExpiration> GetOHTTPKeyFor(
const url::Origin& origin) const = 0;
virtual void UpdateOHTTPKeyFor(const url::Origin& origin,
const OHTTPKeyAndExpiration& key) = 0;
virtual std::optional<KeyAndNonUniqueUserIdWithExpiration>
GetKeyAndNonUniqueUserId() const = 0;
virtual void UpdateKeyAndNonUniqueUserId(
const KeyAndNonUniqueUserIdWithExpiration& key) = 0;
};
class KAnonymityServiceMemoryStorage : public KAnonymityServiceStorage {
public:
KAnonymityServiceMemoryStorage();
~KAnonymityServiceMemoryStorage() override;
void WaitUntilReady(base::OnceCallback<void(InitStatus)> on_ready) override;
std::optional<OHTTPKeyAndExpiration> GetOHTTPKeyFor(
const url::Origin& origin) const override;
void UpdateOHTTPKeyFor(const url::Origin& origin,
const OHTTPKeyAndExpiration& key) override;
std::optional<KeyAndNonUniqueUserIdWithExpiration> GetKeyAndNonUniqueUserId()
const override;
void UpdateKeyAndNonUniqueUserId(
const KeyAndNonUniqueUserIdWithExpiration& key) override;
private:
std::optional<KeyAndNonUniqueUserIdWithExpiration>
key_and_non_unique_user_id_with_expiration_;
base::flat_map<url::Origin, OHTTPKeyAndExpiration> ohttp_key_map_;
};
std::unique_ptr<KAnonymityServiceStorage> CreateKAnonymitySqlStorageForPath(
base::FilePath db_storage_path);
#endif // CHROME_BROWSER_K_ANONYMITY_SERVICE_K_ANONYMITY_SERVICE_STORAGE_H_
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