chrome/browser/component_updater/pnacl/pnacl_component_installer.h

   1 // Copyright (c) 2011 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_COMPONENT_UPDATER_PNACL_PNACL_COMPONENT_INSTALLER_H_
   6 #define CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_COMPONENT_INSTALLER_H_
   7
   8 #include <list>
   9 #include <string>
  10
  11 #include "base/callback.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/files/file_path.h"
  14 #include "base/macros.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/version.h"
  17 #include "components/update_client/update_client.h"
  18
  19 namespace base {
  20 class DictionaryValue;
  21 }
  22
  23 namespace pnacl {
  24 // Returns true if PNaCl actually needs an on-demand component update.
  25 // E.g., if PNaCl is not yet installed and the user is loading a PNaCl app,
  26 // or the current version is behind chrome's version, and is ABI incompatible
  27 // with chrome. If not necessary, returns false.
  28 // May conservatively return false before PNaCl is registered, but
  29 // should return the right answer after it is registered.
  30 bool NeedsOnDemandUpdate();
  31 }
  32
  33 namespace component_updater {
  34
  35 class ComponentUpdateService;
  36
  37 // Component installer responsible for Portable Native Client files.
  38 // Files can be installed to a shared location, or be installed to
  39 // a per-user location.
  40 class PnaclComponentInstaller : public update_client::ComponentInstaller {
  41  public:
  42   PnaclComponentInstaller();
  43
  44   // ComponentInstaller implementation:
  45   void OnUpdateError(int error) override;
  46   bool Install(const base::DictionaryValue& manifest,
  47                const base::FilePath& unpack_path) override;
  48   bool GetInstalledFile(const std::string& file,
  49                         base::FilePath* installed_file) override;
  50   bool Uninstall() override;
  51
  52   // Register a PNaCl component for the first time.
  53   void RegisterPnaclComponent(ComponentUpdateService* cus);
  54
  55   update_client::CrxComponent GetCrxComponent();
  56
  57   // Determine the base directory for storing each version of PNaCl.
  58   base::FilePath GetPnaclBaseDirectory();
  59
  60   base::Version current_version() const { return current_version_; }
  61
  62   void set_current_version(const base::Version& current_version) {
  63     current_version_ = current_version;
  64   }
  65
  66   std::string current_fingerprint() const { return current_fingerprint_; }
  67
  68   void set_current_fingerprint(const std::string& current_fingerprint) {
  69     current_fingerprint_ = current_fingerprint;
  70   }
  71
  72   ComponentUpdateService* cus() const { return cus_; }
  73
  74  private:
  75   ~PnaclComponentInstaller() override;
  76
  77   base::Version current_version_;
  78   std::string current_fingerprint_;
  79   ComponentUpdateService* cus_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(PnaclComponentInstaller);
  82 };
  83
  84 }  // namespace component_updater
  85
  86 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_COMPONENT_INSTALLER_H_