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      1 // Copyright 2013 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_MEDIA_GALLERIES_FILEAPI_SUPPORTED_AUDIO_VIDEO_CHECKER_H_
      6 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SUPPORTED_AUDIO_VIDEO_CHECKER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/files/file_path.h"
     10 #include "base/memory/ref_counted.h"
     11 #include "base/memory/weak_ptr.h"
     12 #include "base/platform_file.h"
     13 #include "chrome/browser/media_galleries/fileapi/av_scanning_file_validator.h"
     14 
     15 class SafeAudioVideoChecker;
     16 
     17 namespace chrome {
     18 class MediaFileValidatorFactory;
     19 }
     20 
     21 // Uses SafeAudioVideoChecker to validate supported audio and video files in
     22 // the utility process and then uses AVScanningFileValidator to ask the OS to
     23 // virus scan them. The entire file is not decoded so a positive result from
     24 // this class does not make the file safe to use in the browser process.
     25 class SupportedAudioVideoChecker : public chrome::AVScanningFileValidator {
     26  public:
     27   virtual ~SupportedAudioVideoChecker();
     28 
     29   static bool SupportsFileType(const base::FilePath& path);
     30 
     31   virtual void StartPreWriteValidation(
     32       const ResultCallback& result_callback) OVERRIDE;
     33 
     34  private:
     35   friend class chrome::MediaFileValidatorFactory;
     36 
     37   explicit SupportedAudioVideoChecker(const base::FilePath& file);
     38 
     39   void OnFileOpen(const base::PlatformFile& file);
     40 
     41   base::FilePath path_;
     42   fileapi::CopyOrMoveFileValidator::ResultCallback callback_;
     43   scoped_refptr<SafeAudioVideoChecker> safe_checker_;
     44   base::WeakPtrFactory<SupportedAudioVideoChecker> weak_factory_;
     45 
     46   DISALLOW_COPY_AND_ASSIGN(SupportedAudioVideoChecker);
     47 };
     48 
     49 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SUPPORTED_AUDIO_VIDEO_CHECKER_H_
     50