chrome/browser/chromeos/file_manager/zip_file_creator.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_FILE_MANAGER_ZIP_FILE_CREATOR_H_
   6 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_ZIP_FILE_CREATOR_H_
   7
   8 #include "base/callback.h"
   9 #include "base/files/file.h"
  10 #include "base/files/file_path.h"
  11 #include "content/public/browser/utility_process_host_client.h"
  12
  13 namespace file_manager {
  14
  15 // ZipFileCreator creates a ZIP file from a specified list of files and
  16 // directories under a common parent directory. This is done in a sandboxed
  17 // subprocess to protect the browser process from handling arbitrary input data
  18 // from untrusted sources.
  19 //
  20 // The class is ref-counted and its ownership is passed around internal callback
  21 // objects and finally to UtilityProcessHost. After the job finishes, the host
  22 // releases the ref-pointer and then ZipFileCreator is automatically deleted.
  23 class ZipFileCreator : public content::UtilityProcessHostClient {
  24  public:
  25   typedef base::Callback<void(bool)> ResultCallback;
  26
  27   // Creates a zip file from the specified list of files and directories.
  28   ZipFileCreator(const ResultCallback& callback,
  29                  const base::FilePath& src_dir,
  30                  const std::vector<base::FilePath>& src_relative_paths,
  31                  const base::FilePath& dest_file);
  32
  33   // Starts creating the zip file. Must be called from the UI thread.
  34   // The result will be passed to |callback|. After the task is finished and
  35   // |callback| is run, ZipFileCreator instance is deleted.
  36   void Start();
  37
  38  private:
  39   friend class ProcessHostClient;
  40
  41   ~ZipFileCreator() override;
  42
  43   // Called after the file handle is opened on blocking pool.
  44   void OnOpenFileHandle(base::File file);
  45
  46   // Starts the utility process that creates the zip file.
  47   void StartProcessOnIOThread(base::File dest_file);
  48
  49   // UtilityProcessHostClient
  50   bool OnMessageReceived(const IPC::Message& message) override;
  51   void OnProcessCrashed(int exit_code) override;
  52
  53   // IPC message handlers.
  54   void OnCreateZipFileSucceeded();
  55   void OnCreateZipFileFailed();
  56
  57   void ReportDone(bool success);
  58
  59   // The callback.
  60   ResultCallback callback_;
  61
  62   // The source directory for input files.
  63   base::FilePath src_dir_;
  64
  65   // The list of source files paths to be included in the zip file.
  66   // Entries are relative paths under directory |src_dir_|.
  67   std::vector<base::FilePath> src_relative_paths_;
  68
  69   // The output zip file.
  70   base::FilePath dest_file_;
  71 };
  72
  73 }  // namespace file_manager
  74
  75 #endif  // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_ZIP_FILE_CREATOR_H_