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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_REQUIREMENTS_SERVICE_H_
#define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_REQUIREMENTS_SERVICE_H_
#include <memory>
#include <utility>
#include "base/containers/mru_cache.h"
#include "base/macros.h"
#include "components/autofill/core/browser/password_requirements_spec_fetcher.h"
#include "components/autofill/core/browser/proto/password_requirements.pb.h"
#include "components/autofill/core/common/signatures_util.h"
#include "components/keyed_service/core/keyed_service.h"
#include "url/gurl.h"
namespace autofill {
class PasswordRequirementsSpec;
}
namespace password_manager {
// A service that fetches, stores and returns requirements for generating a
// random password on a specific form and site.
class PasswordRequirementsService : public KeyedService {
public:
// If |fetcher| is a nullptr, no network requests happen.
explicit PasswordRequirementsService(
std::unique_ptr<autofill::PasswordRequirementsSpecFetcher> fetcher);
~PasswordRequirementsService() override;
// Returns the password requirements for a field that appears on a site
// with domain |main_frame_domain| and has the specified |form_signature|
// and |field_signature|.
//
// This function returns synchronously and only returns results if these
// have been retrieved via the Add/Prefetch methods below and the data is
// still in the cache.
autofill::PasswordRequirementsSpec GetSpec(
const GURL& main_frame_domain,
autofill::FormSignature form_signature,
autofill::FieldSignature field_signature);
// Triggers a fetch for password requirements for the domain passed in
// |main_frame_domain| and stores it into the MRU cache.
void PrefetchSpec(const GURL& main_frame_domain);
// Stores the password requirements for the field identified via
// |form_signature| and |field_signature| in the MRU cache.
void AddSpec(autofill::FormSignature form_signature,
autofill::FieldSignature field_signature,
const autofill::PasswordRequirementsSpec& spec);
#if defined(UNIT_TEST)
// Wipes MRU cached data to ensure that it gets fetched again.
// This style of delegation is used because UNIT_TEST is only available in
// header files as per presubmit checks.
void ClearDataForTesting() { ClearDataForTestingImpl(); }
#endif
private:
void OnFetchedRequirements(const GURL& main_frame_domain,
const autofill::PasswordRequirementsSpec& spec);
void ClearDataForTestingImpl();
using FullSignature =
std::pair<autofill::FormSignature, autofill::FieldSignature>;
base::MRUCache<GURL, autofill::PasswordRequirementsSpec> specs_for_domains_;
base::MRUCache<FullSignature, autofill::PasswordRequirementsSpec>
specs_for_signatures_;
// May be a nullptr.
std::unique_ptr<autofill::PasswordRequirementsSpecFetcher> fetcher_;
DISALLOW_COPY_AND_ASSIGN(PasswordRequirementsService);
};
} // namespace password_manager
#endif // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_REQUIREMENTS_SERVICE_H_