pnacl_component_installer.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
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
19namespace base {
20class DictionaryValue;
21}
22
23namespace 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.
30bool NeedsOnDemandUpdate();
31}
32
33namespace 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.
38class 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