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      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/component_updater/component_updater_service.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 // Component installer responsible for Portable Native Client files.
     36 // Files can be installed to a shared location, or be installed to
     37 // a per-user location.
     38 class PnaclComponentInstaller : public ComponentInstaller {
     39  public:
     40   PnaclComponentInstaller();
     41 
     42   virtual ~PnaclComponentInstaller();
     43 
     44   virtual void OnUpdateError(int error) OVERRIDE;
     45 
     46   virtual bool Install(const base::DictionaryValue& manifest,
     47                        const base::FilePath& unpack_path) OVERRIDE;
     48 
     49   virtual bool GetInstalledFile(const std::string& file,
     50                                 base::FilePath* installed_file) OVERRIDE;
     51 
     52   // Register a PNaCl component for the first time.
     53   void RegisterPnaclComponent(ComponentUpdateService* cus);
     54 
     55   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   base::Version current_version_;
     76   std::string current_fingerprint_;
     77   ComponentUpdateService* cus_;
     78   DISALLOW_COPY_AND_ASSIGN(PnaclComponentInstaller);
     79 };
     80 
     81 }  // namespace component_updater
     82 
     83 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_COMPONENT_INSTALLER_H_
     84