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// Copyright 2012 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_RENDERER_CHROME_RENDER_THREAD_OBSERVER_H_
#define CHROME_RENDERER_CHROME_RENDER_THREAD_OBSERVER_H_
#include <memory>
#include "base/synchronization/lock.h"
#include "base/thread_annotations.h"
#include "build/build_config.h"
#include "chrome/common/privacy_budget/identifiability_study_configurator.mojom.h"
#include "chrome/common/renderer_configuration.mojom.h"
#include "components/content_settings/common/content_settings_manager.mojom.h"
#include "components/content_settings/core/common/content_settings.h"
#include "components/signin/public/base/signin_buildflags.h"
#include "content/public/renderer/render_thread_observer.h"
#include "mojo/public/cpp/bindings/associated_receiver_set.h"
#include "mojo/public/cpp/bindings/pending_associated_receiver.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#if BUILDFLAG(IS_CHROMEOS)
#include "chrome/renderer/chromeos_delayed_callback_group.h"
#endif // BUILDFLAG(IS_CHROMEOS)
#if BUILDFLAG(ENABLE_BOUND_SESSION_CREDENTIALS)
class BoundSessionRequestThrottledInRendererManager;
class BoundSessionRequestThrottledHandler;
#endif
namespace visitedlink {
class VisitedLinkReader;
}
// This class filters the incoming control messages (i.e. ones not destined for
// a RenderView) for Chrome specific messages that the content layer doesn't
// happen. If a few messages are related, they should probably have their own
// observer.
class ChromeRenderThreadObserver
: public content::RenderThreadObserver,
public chrome::mojom::RendererConfiguration,
public chrome::mojom::IdentifiabilityStudyConfigurator {
public:
#if BUILDFLAG(IS_CHROMEOS)
// A helper class to handle Mojo calls that need to be dispatched to the IO
// thread instead of the main thread as is the norm.
// This class is thread-safe.
class ChromeOSListener : public chrome::mojom::ChromeOSListener,
public base::RefCountedThreadSafe<ChromeOSListener> {
public:
static scoped_refptr<ChromeOSListener> Create(
mojo::PendingReceiver<chrome::mojom::ChromeOSListener>
chromeos_listener_receiver);
ChromeOSListener(const ChromeOSListener&) = delete;
ChromeOSListener& operator=(const ChromeOSListener&) = delete;
// Is the merge session still running?
// Virtual for testing.
virtual bool IsMergeSessionRunning() const;
// Run |callback| on the calling sequence when the merge session has
// finished (or timed out).
// Virtual for testing.
virtual void RunWhenMergeSessionFinished(
DelayedCallbackGroup::Callback callback);
protected:
// chrome::mojom::ChromeOSListener:
void MergeSessionComplete() override;
ChromeOSListener();
~ChromeOSListener() override;
private:
friend class base::RefCountedThreadSafe<ChromeOSListener>;
void BindOnIOThread(mojo::PendingReceiver<chrome::mojom::ChromeOSListener>
chromeos_listener_receiver);
scoped_refptr<DelayedCallbackGroup> session_merged_callbacks_;
bool merge_session_running_ GUARDED_BY(lock_);
mutable base::Lock lock_;
mojo::Receiver<chrome::mojom::ChromeOSListener> receiver_{this};
};
#endif // BUILDFLAG(IS_CHROMEOS)
ChromeRenderThreadObserver();
ChromeRenderThreadObserver(const ChromeRenderThreadObserver&) = delete;
ChromeRenderThreadObserver& operator=(const ChromeRenderThreadObserver&) =
delete;
~ChromeRenderThreadObserver() override;
// Return a copy of the dynamic parameters - those that may change while the
// render process is running.
chrome::mojom::DynamicParamsPtr GetDynamicParams() const;
#if BUILDFLAG(ENABLE_BOUND_SESSION_CREDENTIALS)
std::unique_ptr<BoundSessionRequestThrottledHandler>
CreateBoundSessionRequestThrottledHandler() const;
#endif
visitedlink::VisitedLinkReader* visited_link_reader() {
return visited_link_reader_.get();
}
#if BUILDFLAG(IS_CHROMEOS)
scoped_refptr<ChromeOSListener> chromeos_listener() const {
return chromeos_listener_;
}
#endif // BUILDFLAG(IS_CHROMEOS)
content_settings::mojom::ContentSettingsManager* content_settings_manager() {
if (content_settings_manager_)
return content_settings_manager_.get();
return nullptr;
}
private:
// content::RenderThreadObserver:
void RegisterMojoInterfaces(
blink::AssociatedInterfaceRegistry* associated_interfaces) override;
void UnregisterMojoInterfaces(
blink::AssociatedInterfaceRegistry* associated_interfaces) override;
// chrome::mojom::RendererConfiguration:
void SetInitialConfiguration(
bool is_incognito_process,
mojo::PendingReceiver<chrome::mojom::ChromeOSListener>
chromeos_listener_receiver,
mojo::PendingRemote<content_settings::mojom::ContentSettingsManager>
content_settings_manager,
mojo::PendingRemote<chrome::mojom::BoundSessionRequestThrottledHandler>
bound_session_request_throttled_handler) override;
void SetConfiguration(chrome::mojom::DynamicParamsPtr params) override;
void OnRendererConfigurationAssociatedRequest(
mojo::PendingAssociatedReceiver<chrome::mojom::RendererConfiguration>
receiver);
// chrome::mojom::IdentifiabilityStudyConfigurator:
void ConfigureIdentifiabilityStudy(bool meta_experiment_active) override;
void OnIdentifiabilityStudyConfiguratorAssociatedRequest(
mojo::PendingAssociatedReceiver<
chrome::mojom::IdentifiabilityStudyConfigurator> receiver);
mojo::Remote<content_settings::mojom::ContentSettingsManager>
content_settings_manager_;
std::unique_ptr<visitedlink::VisitedLinkReader> visited_link_reader_;
mojo::AssociatedReceiverSet<chrome::mojom::IdentifiabilityStudyConfigurator>
identifiability_study_configurator_receivers_;
mojo::AssociatedReceiverSet<chrome::mojom::RendererConfiguration>
renderer_configuration_receivers_;
chrome::mojom::DynamicParamsPtr dynamic_params_
GUARDED_BY(dynamic_params_lock_);
mutable base::Lock dynamic_params_lock_;
#if BUILDFLAG(IS_CHROMEOS)
// Only set if the ChromeOS merge session was running when the renderer
// was started.
scoped_refptr<ChromeOSListener> chromeos_listener_;
#endif // BUILDFLAG(IS_CHROMEOS)
#if BUILDFLAG(ENABLE_BOUND_SESSION_CREDENTIALS)
scoped_refptr<BoundSessionRequestThrottledInRendererManager>
bound_session_request_throttled_in_renderer_manager_;
scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
#endif
};
#endif // CHROME_RENDERER_CHROME_RENDER_THREAD_OBSERVER_H_
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