| // Copyright 2017 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_COMMON_SAFE_BROWSING_DISK_IMAGE_TYPE_SNIFFER_MAC_H_ |
| #define CHROME_COMMON_SAFE_BROWSING_DISK_IMAGE_TYPE_SNIFFER_MAC_H_ |
| |
| #include "base/containers/span.h" |
| #include "base/files/file.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/ref_counted.h" |
| |
| namespace safe_browsing { |
| |
| // This class is used to determine whether a given file is a Mac archive type, |
| // regardless of file extension. It does so by determining whether the file has |
| // the 'koly' signature typical of Mac archive files. |
| class DiskImageTypeSnifferMac |
| : public base::RefCountedThreadSafe<DiskImageTypeSnifferMac> { |
| public: |
| DiskImageTypeSnifferMac(); |
| |
| // Reads trailer from file to see if it is a DMG type. Must be called on the |
| // FILE thread. |
| static bool IsAppleDiskImage(const base::FilePath& dmg_file); |
| |
| // Returns true when the trailer is a valid trailer for a DMG type. |
| static bool IsAppleDiskImageTrailer(const base::span<const uint8_t>& trailer); |
| |
| // Returns the size of a DMG trailer. |
| static size_t AppleDiskImageTrailerSize(); |
| |
| private: |
| friend class base::RefCountedThreadSafe<DiskImageTypeSnifferMac>; |
| |
| ~DiskImageTypeSnifferMac(); |
| |
| DISALLOW_COPY_AND_ASSIGN(DiskImageTypeSnifferMac); |
| }; |
| |
| } // namespace safe_browsing |
| |
| #endif // CHROME_COMMON_SAFE_BROWSING_DISK_IMAGE_TYPE_SNIFFE_MAC_H_ |