text: // Copyright 2013 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 CHROME_BROWSER_SAFE_BROWSING_DOWNLOAD_FEEDBACK_H_
  #define CHROME_BROWSER_SAFE_BROWSING_DOWNLOAD_FEEDBACK_H_
  
  #include <stdint.h>
  
  #include <string>
  
  #include "base/callback_forward.h"
  #include "base/files/file_path.h"
  #include "base/threading/non_thread_safe.h"
  #include "chrome/browser/safe_browsing/two_phase_uploader.h"
  
  namespace safe_browsing {
  
  class DownloadFeedbackFactory;
  
  // Handles the uploading of a single downloaded binary to the safebrowsing
  // download feedback service.
  class DownloadFeedback : public base::NonThreadSafe {
   public:
    // Takes ownership of the file pointed to be |file_path|, it will be deleted
    // when the DownloadFeedback is destructed.
    static std::unique_ptr<DownloadFeedback> Create(
        net::URLRequestContextGetter* request_context_getter,
        base::TaskRunner* file_task_runner,
        const base::FilePath& file_path,
        const std::string& ping_request,
        const std::string& ping_response);
  
    // The largest file size we support uploading.
    // Note: changing this will affect the max size of
    // SBDownloadFeedback.SizeSuccess and SizeFailure histograms.
    static const int64_t kMaxUploadSize;
  
    // The URL where the browser sends download feedback requests.
    static const char kSbFeedbackURL[];
  
    virtual ~DownloadFeedback() {}
  
    // Makes the passed |factory| the factory used to instantiate
    // a DownloadFeedback. Useful for tests.
    static void RegisterFactory(DownloadFeedbackFactory* factory) {
      factory_ = factory;
    }
  
    // Start uploading the file to the download feedback service.
    // |finish_callback| will be called when the upload completes or fails, but is
    // not called if the upload is cancelled by deleting the DownloadFeedback
    // while the upload is in progress.
    virtual void Start(const base::Closure& finish_callback) = 0;
  
    virtual const std::string& GetPingRequestForTesting() const = 0;
    virtual const std::string& GetPingResponseForTesting() const = 0;
  
   private:
    // The factory that controls the creation of DownloadFeedback objects.
    // This is used by tests.
    static DownloadFeedbackFactory* factory_;
  };
  
  class DownloadFeedbackFactory {
   public:
    virtual ~DownloadFeedbackFactory() {}
  
    virtual std::unique_ptr<DownloadFeedback> CreateDownloadFeedback(
        net::URLRequestContextGetter* request_context_getter,
        base::TaskRunner* file_task_runner,
        const base::FilePath& file_path,
        const std::string& ping_request,
        const std::string& ping_response) = 0;
  };
  
  }  // namespace safe_browsing
  
  #endif  // CHROME_BROWSER_SAFE_BROWSING_DOWNLOAD_FEEDBACK_H_
  