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// Copyright 2022 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_UPDATER_POLICY_POLICY_FETCHER_H_
#define CHROME_UPDATER_POLICY_POLICY_FETCHER_H_
#include <optional>
#include <vector>
#include "base/functional/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "chrome/updater/policy/manager.h"
#include "chrome/updater/policy/service.h"
#include "url/gurl.h"
namespace policy {
enum class PolicyFetchReason;
} // namespace policy
namespace updater {
class PersistedData;
// Base class for the policy fetchers.
class PolicyFetcher : public base::RefCountedThreadSafe<PolicyFetcher> {
public:
virtual void FetchPolicies(
policy::PolicyFetchReason reason,
base::OnceCallback<void(int, scoped_refptr<PolicyManagerInterface>)>
callback) = 0;
protected:
friend class base::RefCountedThreadSafe<PolicyFetcher>;
virtual ~PolicyFetcher() = default;
};
// A wrapper class that contains a number of `PolicyFetchers` and falls back
// between them when one encounters an error.
class FallbackPolicyFetcher : public PolicyFetcher {
public:
FallbackPolicyFetcher() = delete;
FallbackPolicyFetcher(const FallbackPolicyFetcher&) = delete;
FallbackPolicyFetcher& operator=(const FallbackPolicyFetcher&) = delete;
FallbackPolicyFetcher(scoped_refptr<PolicyFetcher> impl,
scoped_refptr<PolicyFetcher> next);
// Overrides of `PolicyFetcher`.
void FetchPolicies(
policy::PolicyFetchReason reason,
base::OnceCallback<void(int, scoped_refptr<PolicyManagerInterface>)>
callback) override;
private:
~FallbackPolicyFetcher() override;
void PolicyFetched(policy::PolicyFetchReason reason,
int result,
scoped_refptr<PolicyManagerInterface> policy_manager);
SEQUENCE_CHECKER(sequence_checker_);
scoped_refptr<PolicyFetcher> impl_;
scoped_refptr<PolicyFetcher> next_;
base::OnceCallback<void(int, scoped_refptr<PolicyManagerInterface>)>
fetch_complete_callback_;
};
// Creates an out-of-process policy fetcher that delegates fetch tasks to the
// enterprise companion app.
[[nodiscard]] scoped_refptr<PolicyFetcher> CreateOutOfProcessPolicyFetcher(
scoped_refptr<PersistedData> persisted_data,
std::optional<bool> override_is_managed_device,
base::TimeDelta override_ceca_connection_timeout);
// Creates an in-process policy fether.
// `server_url`: the DM server endpoint.
// `proxy_configuration`: Proxy configurations set by the existing policies.
[[nodiscard]] scoped_refptr<PolicyFetcher> CreateInProcessPolicyFetcher(
const GURL& server_url,
std::optional<PolicyServiceProxyConfiguration> proxy_configuration,
std::optional<bool> override_is_managed_device);
} // namespace updater
#endif // CHROME_UPDATER_POLICY_POLICY_FETCHER_H_
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