src/chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h

   1 // Copyright 2014 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_APP_MODE_KIOSK_EXTERNAL_UPDATE_VALIDATOR_H_
   6 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_EXTERNAL_UPDATE_VALIDATOR_H_
   7
   8 #include <string>
   9
  10 #include "base/files/file_path.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/sequenced_task_runner.h"
  13 #include "chrome/browser/extensions/sandboxed_unpacker.h"
  14
  15 namespace extensions {
  16 class Extension;
  17 }
  18
  19 namespace chromeos {
  20
  21 // Delegate class for KioskExternalUpdateValidator, derived class must support
  22 // WeakPtr.
  23 class KioskExternalUpdateValidatorDelegate {
  24  public:
  25   virtual void OnExtenalUpdateUnpackSuccess(
  26       const std::string& app_id,
  27       const std::string& version,
  28       const std::string& min_browser_version,
  29       const base::FilePath& temp_dir) = 0;
  30   virtual void OnExternalUpdateUnpackFailure(const std::string& app_id) = 0;
  31
  32  protected:
  33   virtual ~KioskExternalUpdateValidatorDelegate() {}
  34 };
  35
  36 // Unpacks the crx file of the kiosk app and validates its signature.
  37 class KioskExternalUpdateValidator
  38     : public extensions::SandboxedUnpackerClient {
  39  public:
  40   KioskExternalUpdateValidator(
  41       const scoped_refptr<base::SequencedTaskRunner>& backend_task_runner,
  42       const std::string& app_id,
  43       const base::FilePath& crx_path,
  44       const base::FilePath& crx_unpack_dir,
  45       const base::WeakPtr<KioskExternalUpdateValidatorDelegate>& delegate);
  46
  47   // Starts validating the external crx file.
  48   void Start();
  49
  50  private:
  51   virtual ~KioskExternalUpdateValidator();
  52
  53   // SandboxedUnpackerClient overrides.
  54   virtual void OnUnpackFailure(const base::string16& error_message) override;
  55   virtual void OnUnpackSuccess(const base::FilePath& temp_dir,
  56                                const base::FilePath& extension_dir,
  57                                const base::DictionaryValue* original_manifest,
  58                                const extensions::Extension* extension,
  59                                const SkBitmap& install_icon) override;
  60
  61   // Task runner for executing file I/O tasks.
  62   const scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
  63   std::string app_id_;
  64
  65   // The directory where the external crx file resides.
  66   base::FilePath crx_dir_;
  67   // The temporary directory used by SandBoxedUnpacker for unpacking extensions.
  68   const base::FilePath crx_unpack_dir_;
  69
  70   base::WeakPtr<KioskExternalUpdateValidatorDelegate> delegate_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(KioskExternalUpdateValidator);
  73 };
  74
  75 }  // namespace chromeos
  76
  77 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_EXTERNAL_UPDATE_VALIDATOR_H_