chrome/installer/mini_installer/configuration.h

   1 // Copyright (c) 2012 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_INSTALLER_MINI_INSTALLER_CONFIGURATION_H_
   6 #define CHROME_INSTALLER_MINI_INSTALLER_CONFIGURATION_H_
   7
   8 #include <windows.h>
   9
  10 #include "chrome/installer/mini_installer/mini_string.h"
  11
  12 namespace mini_installer {
  13
  14 // A simple container of the mini_installer's configuration, as dictated by the
  15 // command line used to invoke it.
  16 class Configuration {
  17  public:
  18   enum Operation {
  19     INSTALL_PRODUCT,
  20     CLEANUP,
  21   };
  22
  23   Configuration();
  24   ~Configuration();
  25
  26   // Initializes this instance on the basis of the process's command line.
  27   bool Initialize(HMODULE module);
  28
  29   // Returns the desired operation dictated by the command line options.
  30   Operation operation() const { return operation_; }
  31
  32   // Returns the program portion of the command line, or NULL if it cannot be
  33   // determined (e.g., by misuse).
  34   const wchar_t* program() const;
  35
  36   // Returns the number of arguments specified on the command line, including
  37   // the program itself.
  38   int argument_count() const { return argument_count_; }
  39
  40   // Returns the original command line.
  41   const wchar_t* command_line() const { return command_line_; }
  42
  43   // Returns the app guid to be used for Chrome.  --chrome-sxs on the command
  44   // line makes this the canary's app guid.
  45   const wchar_t* chrome_app_guid() const { return chrome_app_guid_; }
  46
  47   // Returns true if --chrome is explicitly or implicitly on the command line.
  48   bool has_chrome() const { return has_chrome_; }
  49
  50   // Returns true if --chrome-frame is on the command line.
  51   bool has_chrome_frame() const { return has_chrome_frame_; }
  52
  53   // Returns true if --multi-install is on the command line.
  54   bool is_multi_install() const { return is_multi_install_; }
  55
  56   // Returns true if --system-level is on the command line.
  57   bool is_system_level() const { return is_system_level_; }
  58
  59   // Retuns true if --chrome-sxs is on the command line.
  60   bool is_side_by_side() const { return is_side_by_side_; }
  61
  62   // Returns the previous version contained in the image's resource.
  63   const wchar_t* previous_version() const { return previous_version_; }
  64
  65  protected:
  66   void Clear();
  67   bool ParseCommandLine(const wchar_t* command_line);
  68   void ReadResources(HMODULE module);
  69
  70   wchar_t** args_;
  71   const wchar_t* chrome_app_guid_;
  72   const wchar_t* command_line_;
  73   int argument_count_;
  74   Operation operation_;
  75   bool has_chrome_;
  76   bool has_chrome_frame_;
  77   bool is_multi_install_;
  78   bool is_system_level_;
  79   bool is_side_by_side_;
  80   const wchar_t* previous_version_;
  81
  82  protected:
  83   typedef StackString<128> ValueString;
  84
  85   // Virtual for testing.
  86   virtual bool ReadClientStateRegistryValue(
  87       const HKEY root_key, const wchar_t* app_guid,
  88       LONG* retval, ValueString& value);
  89
  90  private:
  91   Configuration(const Configuration&);
  92   Configuration& operator=(const Configuration&);
  93
  94   void SetChromeAppGuid();
  95 };
  96
  97 }  // namespace mini_installer
  98
  99 #endif  // CHROME_INSTALLER_MINI_INSTALLER_CONFIGURATION_H_