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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This class pairs with DownloadController on Java side to forward requests
// for GET downloads to the current DownloadListener. POST downloads are
// handled on the native side.
//
// Both classes are Singleton classes. C++ object owns Java object.
//
// Call sequence
// GET downloads:
// DownloadController::CreateGETDownload() =>
// DownloadController.newHttpGetDownload() =>
// DownloadListener.onDownloadStart() /
// DownloadListener2.requestHttpGetDownload()
//
#ifndef CHROME_BROWSER_DOWNLOAD_ANDROID_DOWNLOAD_CONTROLLER_H_
#define CHROME_BROWSER_DOWNLOAD_ANDROID_DOWNLOAD_CONTROLLER_H_
#include <map>
#include <string>
#include <utility>
#include "base/android/scoped_java_ref.h"
#include "base/memory/singleton.h"
#include "chrome/browser/download/android/dangerous_download_dialog_bridge.h"
#include "chrome/browser/download/android/download_callback_validator.h"
#include "chrome/browser/download/android/download_controller_base.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_key.h"
#include "components/safe_browsing/android/safe_browsing_api_handler_bridge.h"
#include "components/safe_browsing/android/safe_browsing_api_handler_util.h"
class DownloadController : public DownloadControllerBase {
public:
static DownloadController* GetInstance();
DownloadController(const DownloadController&) = delete;
DownloadController& operator=(const DownloadController&) = delete;
// DownloadControllerBase implementation.
void AcquireFileAccessPermission(
const content::WebContents::Getter& wc_getter,
AcquireFileAccessPermissionCallback callback) override;
void CreateAndroidDownload(const content::WebContents::Getter& wc_getter,
const DownloadInfo& info) override;
// UMA histogram enum for download storage permission requests. Keep this
// in sync with MobileDownloadStoragePermission in histograms.xml. This should
// be append only.
enum StoragePermissionType {
STORAGE_PERMISSION_REQUESTED = 0,
STORAGE_PERMISSION_NO_ACTION_NEEDED,
STORAGE_PERMISSION_GRANTED,
STORAGE_PERMISSION_DENIED,
STORAGE_PERMISSION_NO_WEB_CONTENTS,
STORAGE_PERMISSION_MAX
};
static void RecordStoragePermission(StoragePermissionType type);
// Close the |web_contents| for |download|. |download| could be null
// if the download is created by Android DownloadManager.
static void CloseTabIfEmpty(content::WebContents* web_contents,
download::DownloadItem* download);
// Callback when user permission prompt finishes. Args: whether file access
// permission is acquired, which permission to update.
using AcquirePermissionCallback =
base::OnceCallback<void(bool, const std::string&)>;
DownloadCallbackValidator* validator() { return &validator_; }
private:
friend struct base::DefaultSingletonTraits<DownloadController>;
friend class DownloadControllerTest;
DownloadController();
~DownloadController() override;
// DownloadControllerBase implementation.
void OnDownloadStarted(download::DownloadItem* download_item) override;
void StartContextMenuDownload(const GURL& url,
const content::ContextMenuParams& params,
content::WebContents* web_contents,
bool is_media) override;
// DownloadItem::Observer interface.
void OnDownloadUpdated(download::DownloadItem* item) override;
void OnDownloadDestroyed(download::DownloadItem* item) override;
// The download item contains dangerous file types.
// Shows the DangerousDownloadDialog (generic dangerous filetype warning).
void OnDangerousDownload(download::DownloadItem* item);
// Shows the UI warnings from Safe Browsing malicious APK download check.
void ShowDangerousDownloadWarning(download::DownloadItem* item);
// Helper methods to start android download on UI thread.
void StartAndroidDownload(const content::WebContents::Getter& wc_getter,
const DownloadInfo& info);
void StartAndroidDownloadInternal(
const content::WebContents::Getter& wc_getter,
const DownloadInfo& info,
bool allowed);
// Get profile key from download item.
ProfileKey* GetProfileKey(download::DownloadItem* download_item);
// Callback after we prompt the user to enable app verification.
void EnableVerifyAppsDone(download::DownloadItem* item,
safe_browsing::VerifyAppsEnabledResult result);
// Notify Java that download is complete, so the user can be informed.
void OnDownloadComplete(download::DownloadItem* item);
// Whether or not we should show an app verification prompt for `item`
bool ShouldShowAppVerificationPrompt(download::DownloadItem* item);
std::string default_file_name_;
DownloadCallbackValidator validator_;
std::unique_ptr<DangerousDownloadDialogBridge> dangerous_download_bridge_;
// The item currently or previously doing an app verification
// prompt. Because we show at most one at a time, this does not need
// to be a set.
raw_ptr<download::DownloadItem> app_verification_prompt_download_ = nullptr;
};
#endif // CHROME_BROWSER_DOWNLOAD_ANDROID_DOWNLOAD_CONTROLLER_H_
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