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// 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 CHROME_BROWSER_ASH_KCER_NSSDB_MIGRATION_PKCS12_MIGRATOR_H_
#define CHROME_BROWSER_ASH_KCER_NSSDB_MIGRATION_PKCS12_MIGRATOR_H_
#include <memory>
#include "base/no_destructor.h"
#include "chrome/browser/profiles/profile_keyed_service_factory.h"
#include "chromeos/ash/components/kcer/kcer.h"
#include "components/keyed_service/core/keyed_service.h"
#include "net/cert/scoped_nss_types.h"
namespace content {
class BrowserContext;
}
namespace kcer {
inline constexpr char kKcerPkcs12MigrationUma[] =
"Ash.KcerPkcs12Migration.Events";
// Used for UMA counters, the entries should not be re-numbered or re-used.
enum class KcerPkcs12MigrationEvent {
kMigrationStarted = 0,
kkNothingToMigrate = 1,
kMigrationFinishedSuccess = 2,
kMigrationFinishedFailure = 3,
kCertMigratedSuccess = 4,
kFailedToReimportCert = 5,
kExportedPkcs12EmptyError = 6,
kFailedToGetKcerCerts = 7,
kFailedToGetNssCerts = 8,
kMaxValue = kFailedToGetNssCerts,
};
// On Profile creation evaluates whether the migration of client certificates
// from the public slot to the private slot is enabled, and if yes, creates and
// starts a Pkcs12Migrator instance.
class Pkcs12MigratorFactory : public ProfileKeyedServiceFactory {
public:
static Pkcs12MigratorFactory* GetInstance();
private:
friend class base::NoDestructor<Pkcs12MigratorFactory>;
Pkcs12MigratorFactory();
~Pkcs12MigratorFactory() override = default;
// Implements BrowserStateKeyedServiceFactory.
bool ServiceIsCreatedWithBrowserContext() const override;
std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
content::BrowserContext* context) const override;
};
// Copies all client certificates from the NSS public slot of the `context` into
// its private slot (provided by Chaps). It never deletes migrated certificates
// to reduce the risk of breakages and allow a simpler rollback.
class Pkcs12Migrator : public KeyedService {
public:
explicit Pkcs12Migrator(content::BrowserContext* context);
~Pkcs12Migrator() override;
// Waits for 30 sec to avoid slowdowns during user session initialization.
// Finds all NSS public slot client certificates that don't exist on the Chaps
// token. Copies the NSS public slot client certificates to the Chaps token.
void Start();
private:
void StartAfterDelay();
void MigrateCerts(bool success, net::ScopedCERTCertificateList certs);
void MigrateCertsWithKcerCerts(
net::ScopedCERTCertificateList nss_certs,
std::vector<scoped_refptr<const Cert>> kcer_certs,
base::flat_map<Token, Error> kcer_errors);
void MigrateEachCert(net::ScopedCERTCertificateList certs);
void ExportedOneCert(net::ScopedCERTCertificateList certs, Pkcs12Blob pkcs12);
void ImportedOneCert(net::ScopedCERTCertificateList certs,
base::expected<void, Error> result);
bool had_failures_ = false;
raw_ptr<content::BrowserContext> context_;
base::WeakPtrFactory<Pkcs12Migrator> weak_factory_{this};
};
} // namespace kcer
#endif // CHROME_BROWSER_ASH_KCER_NSSDB_MIGRATION_PKCS12_MIGRATOR_H_
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