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// Copyright 2014 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_SAFE_BROWSING_INCIDENT_REPORTING_DOWNLOAD_METADATA_MANAGER_H_
#define CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_DOWNLOAD_METADATA_MANAGER_H_
#include <map>
#include <memory>
#include "base/functional/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "components/download/public/common/all_download_event_notifier.h"
namespace base {
class SequencedTaskRunner;
}
namespace content {
class BrowserContext;
class DownloadManager;
}
namespace download {
class DownloadItem;
class SimpleDownloadManagerCoordinator;
}
namespace safe_browsing {
class ClientDownloadRequest;
class ClientIncidentReport_DownloadDetails;
// A browser-wide object that manages the persistent state of metadata
// pertaining to a download.
class DownloadMetadataManager
: public download::AllDownloadEventNotifier::Observer {
public:
// A callback run when the results of a call to GetDownloadDetails are ready.
// The supplied parameter may be null, indicating that there are no persisted
// details for the |browser_context| passed to GetDownloadDetails.
typedef base::OnceCallback<void(
std::unique_ptr<ClientIncidentReport_DownloadDetails>)>
GetDownloadDetailsCallback;
DownloadMetadataManager();
DownloadMetadataManager(const DownloadMetadataManager&) = delete;
DownloadMetadataManager& operator=(const DownloadMetadataManager&) = delete;
~DownloadMetadataManager() override;
// Adds the coordinator for `download_manager` to the set observed by the
// metadata manager.
void AddDownloadManager(content::DownloadManager* download_manager);
// Sets |request| as the relevant metadata to persist for |download| upon
// completion. |request| will be persisted when the download completes, or
// discarded if the download is cancelled.
virtual void SetRequest(download::DownloadItem* download,
const ClientDownloadRequest* request);
// Gets the persisted DownloadDetails for |browser_context|. |callback| will
// be run immediately if the data is available. Otherwise, it will be run
// later on the caller's thread.
virtual void GetDownloadDetails(content::BrowserContext* browser_context,
GetDownloadDetailsCallback callback);
// download::AllDownloadEventNotifier::Observer:
void OnManagerGoingDown(
download::SimpleDownloadManagerCoordinator* coordinator) override;
void OnDownloadUpdated(
download::SimpleDownloadManagerCoordinator* coordinator,
download::DownloadItem* download) override;
void OnDownloadOpened(download::SimpleDownloadManagerCoordinator* coordinator,
download::DownloadItem* download) override;
void OnDownloadRemoved(
download::SimpleDownloadManagerCoordinator* coordinator,
download::DownloadItem* download) override;
protected:
// Returns the coordinator for a given BrowserContext. Virtual for tests.
virtual download::SimpleDownloadManagerCoordinator*
GetCoordinatorForBrowserContext(content::BrowserContext* context);
private:
class ManagerContext;
// A mapping of DownloadManagerCoordinators to their corresponding contexts.
typedef std::map<download::SimpleDownloadManagerCoordinator*,
raw_ptr<ManagerContext, CtnExperimental>>
ManagerToContextMap;
// A task runner to which IO tasks are posted.
const scoped_refptr<base::SequencedTaskRunner> task_runner_;
// Contexts for each coordinator that has been added and has not yet "gone
// down".
ManagerToContextMap contexts_;
};
} // namespace safe_browsing
#endif // CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_DOWNLOAD_METADATA_MANAGER_H_
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