chrome/installer/util/installer_state.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_UTIL_INSTALLER_STATE_H_
   6 #define CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_
   7
   8 #include <set>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/files/file_path.h"
  14 #include "base/logging.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/memory/scoped_vector.h"
  17 #include "base/version.h"
  18 #include "chrome/installer/util/browser_distribution.h"
  19 #include "chrome/installer/util/product.h"
  20 #include "chrome/installer/util/util_constants.h"
  21
  22 #if defined(OS_WIN)
  23 #include <windows.h>  // NOLINT
  24 #endif
  25
  26 namespace base {
  27 class CommandLine;
  28 }
  29
  30 namespace installer {
  31
  32 class ChannelInfo;
  33 class InstallationState;
  34 class MasterPreferences;
  35
  36 class ProductState;
  37
  38 typedef std::vector<Product*> Products;
  39
  40 // Encapsulates the state of the current installation operation.  Only valid
  41 // for installs and upgrades (not for uninstalls or non-install commands).
  42 // This class interprets the command-line arguments and master preferences and
  43 // determines the operations to be performed. For example, the Chrome Binaries
  44 // are automatically added if required in multi-install mode.
  45 // TODO(erikwright): This is now used a fair bit during uninstall, and
  46 // InstallerState::Initialize() contains a lot of code for uninstall. The class
  47 // comment should probably be updated.
  48 // TODO(grt): Rename to InstallerEngine/Conductor or somesuch?
  49 class InstallerState {
  50  public:
  51   enum Level {
  52     UNKNOWN_LEVEL,
  53     USER_LEVEL,
  54     SYSTEM_LEVEL
  55   };
  56
  57   enum PackageType {
  58     UNKNOWN_PACKAGE_TYPE,
  59     SINGLE_PACKAGE,
  60     MULTI_PACKAGE
  61   };
  62
  63   enum Operation {
  64     UNINITIALIZED,
  65     SINGLE_INSTALL_OR_UPDATE,
  66     MULTI_INSTALL,
  67     MULTI_UPDATE,
  68     UNINSTALL
  69   };
  70
  71   // Constructs an uninitialized instance; see Initialize().
  72   InstallerState();
  73
  74   // Constructs an initialized but empty instance.
  75   explicit InstallerState(Level level);
  76
  77   // Initializes this object based on the current operation.
  78   void Initialize(const base::CommandLine& command_line,
  79                   const MasterPreferences& prefs,
  80                   const InstallationState& machine_state);
  81
  82   // Adds a product constructed on the basis of |state|, setting this object's
  83   // msi flag if |state| is msi-installed.  Returns the product that was added,
  84   // or NULL if |state| is incompatible with this object.  Ownership is not
  85   // passed to the caller.
  86   Product* AddProductFromState(BrowserDistribution::Type type,
  87                                const ProductState& state);
  88
  89   // Returns the product that was added, or NULL if |product| is incompatible
  90   // with this object.  Ownership of |product| is taken by this object, while
  91   // ownership of the return value is not passed to the caller.
  92   Product* AddProduct(scoped_ptr<Product>* product);
  93
  94   // Removes |product| from the set of products to be operated on.  The object
  95   // pointed to by |product| is freed.  Returns false if |product| is not
  96   // present in the set.
  97   bool RemoveProduct(const Product* product);
  98
  99   // The level (user or system) of this operation.
 100   Level level() const { return level_; }
 101
 102   // The package type (single or multi) of this operation.
 103   PackageType package_type() const { return package_type_; }
 104
 105   // An identifier of this operation.
 106   Operation operation() const { return operation_; }
 107
 108   // A convenience method returning level() == SYSTEM_LEVEL.
 109   // TODO(grt): Eradicate the bool in favor of the enum.
 110   bool system_install() const;
 111
 112   // A convenience method returning package_type() == MULTI_PACKAGE.
 113   // TODO(grt): Eradicate the bool in favor of the enum.
 114   bool is_multi_install() const;
 115
 116   // A convenient method returning the presence of the
 117   // --ensure-google-update-present switch.
 118   bool ensure_google_update_present() const {
 119     return ensure_google_update_present_;
 120   }
 121
 122   // The full path to the place where the operand resides.
 123   const base::FilePath& target_path() const { return target_path_; }
 124
 125   // True if the "msi" preference is set or if a product with the "msi" state
 126   // flag is set is to be operated on.
 127   bool is_msi() const { return msi_; }
 128
 129   // True if the --verbose-logging command-line flag is set or if the
 130   // verbose_logging master preferences option is true.
 131   bool verbose_logging() const { return verbose_logging_; }
 132
 133 #if defined(OS_WIN)
 134   HKEY root_key() const { return root_key_; }
 135 #endif
 136
 137   // The ClientState key by which we interact with Google Update.
 138   const std::wstring& state_key() const { return state_key_; }
 139
 140   // Convenience method to return the type of the BrowserDistribution associated
 141   // with the ClientState key we will be interacting with.
 142   BrowserDistribution::Type state_type() const { return state_type_; }
 143
 144   // Returns the BrowserDistribution instance corresponding to the binaries for
 145   // this run if we're operating on a multi-package product.
 146   BrowserDistribution* multi_package_binaries_distribution() const {
 147     DCHECK(package_type_ == MULTI_PACKAGE);
 148     DCHECK(multi_package_distribution_ != NULL);
 149     return multi_package_distribution_;
 150   }
 151
 152   const Products& products() const { return products_.get(); }
 153
 154   // Returns the product of the desired type, or NULL if none found.
 155   const Product* FindProduct(BrowserDistribution::Type distribution_type) const;
 156
 157   // Returns the currently installed version in |target_path|, or NULL if no
 158   // products are installed.  Ownership is passed to the caller.
 159   base::Version* GetCurrentVersion(
 160       const InstallationState& machine_state) const;
 161
 162   // Returns the critical update version if all of the following are true:
 163   // * --critical-update-version=CUV was specified on the command-line.
 164   // * current_version == NULL or current_version < CUV.
 165   // * new_version >= CUV.
 166   // Otherwise, returns an invalid version.
 167   base::Version DetermineCriticalVersion(
 168       const base::Version* current_version,
 169       const base::Version& new_version) const;
 170
 171   // Returns whether or not there is currently a Chrome Frame instance running.
 172   // Note that there isn't a mechanism to lock Chrome Frame in place, so Chrome
 173   // Frame may either exit or start up after this is called.
 174   bool IsChromeFrameRunning(const InstallationState& machine_state) const;
 175
 176   // Returns true if any of the binaries from a multi-install Chrome Frame that
 177   // has been migrated to single-install are still in use.
 178   bool AreBinariesInUse(const InstallationState& machine_state) const;
 179
 180   // Returns the path to the installer under Chrome version folder
 181   // (for example <target_path>\Google\Chrome\Application\<Version>\Installer)
 182   base::FilePath GetInstallerDirectory(const base::Version& version) const;
 183
 184   // Try to delete all directories under |temp_path| whose versions are less
 185   // than |new_version| and not equal to |existing_version|. |existing_version|
 186   // may be NULL.
 187   void RemoveOldVersionDirectories(const base::Version& new_version,
 188                                    base::Version* existing_version,
 189                                    const base::FilePath& temp_path) const;
 190
 191   // Adds to |com_dll_list| the list of COM DLLs that are to be registered
 192   // and/or unregistered. The list may be empty.
 193   void AddComDllList(std::vector<base::FilePath>* com_dll_list) const;
 194
 195   bool SetChannelFlags(bool set, ChannelInfo* channel_info) const;
 196
 197   // See InstallUtil::UpdateInstallerStage.
 198   void UpdateStage(installer::InstallerStage stage) const;
 199
 200   // For a MULTI_INSTALL or MULTI_UPDATE operation, updates the Google Update
 201   // "ap" values for all products being operated on.
 202   void UpdateChannels() const;
 203
 204   // Sets installer result information in the registry for consumption by Google
 205   // Update.  The InstallerResult value is set to 0 (SUCCESS) or 1
 206   // (FAILED_CUSTOM_ERROR) depending on whether |status| maps to success or not.
 207   // |status| itself is written to the InstallerError value.
 208   // |string_resource_id|, if non-zero, identifies a localized string written to
 209   // the InstallerResultUIString value.  |launch_cmd|, if non-NULL and
 210   // non-empty, is written to the InstallerSuccessLaunchCmdLine value.
 211   void WriteInstallerResult(InstallStatus status,
 212                             int string_resource_id,
 213                             const std::wstring* launch_cmd) const;
 214
 215   // Returns true if this install needs to register an Active Setup command.
 216   bool RequiresActiveSetup() const;
 217
 218  protected:
 219   // Bits for the |file_bits| argument of AnyExistsAndIsInUse.
 220   enum {
 221     CHROME_DLL              = 1 << 0,
 222     CHROME_FRAME_DLL        = 1 << 1,
 223     CHROME_FRAME_HELPER_DLL = 1 << 2,
 224     CHROME_FRAME_HELPER_EXE = 1 << 3,
 225     NUM_BINARIES            = 4
 226   };
 227
 228   // Returns true if |file| exists and cannot be opened for exclusive write
 229   // access.
 230   static bool IsFileInUse(const base::FilePath& file);
 231
 232   // Clears the instance to an uninitialized state.
 233   void Clear();
 234
 235   // Returns true if any file corresponding to a bit in |file_bits| (from the
 236   // enum above) for the currently installed version exists and is in use.
 237   bool AnyExistsAndIsInUse(const InstallationState& machine_state,
 238                            uint32 file_bits) const;
 239   base::FilePath GetDefaultProductInstallPath(BrowserDistribution* dist) const;
 240   bool CanAddProduct(const Product& product,
 241                      const base::FilePath* product_dir) const;
 242   Product* AddProductInDirectory(const base::FilePath* product_dir,
 243                                  scoped_ptr<Product>* product);
 244   Product* AddProductFromPreferences(
 245       BrowserDistribution::Type distribution_type,
 246       const MasterPreferences& prefs,
 247       const InstallationState& machine_state);
 248   bool IsMultiInstallUpdate(const MasterPreferences& prefs,
 249                             const InstallationState& machine_state);
 250
 251   // Enumerates all files named one of
 252   // [chrome.exe, old_chrome.exe, new_chrome.exe] in target_path_ and
 253   // returns their version numbers in a set.
 254   void GetExistingExeVersions(std::set<std::string>* existing_versions) const;
 255
 256   // Sets this object's level and updates the root_key_ accordingly.
 257   void set_level(Level level);
 258
 259   // Sets this object's package type and updates the multi_package_distribution_
 260   // accordingly.
 261   void set_package_type(PackageType type);
 262
 263   Operation operation_;
 264   base::FilePath target_path_;
 265   std::wstring state_key_;
 266   BrowserDistribution::Type state_type_;
 267   ScopedVector<Product> products_;
 268   BrowserDistribution* multi_package_distribution_;
 269   base::Version critical_update_version_;
 270   Level level_;
 271   PackageType package_type_;
 272 #if defined(OS_WIN)
 273   HKEY root_key_;
 274 #endif
 275   bool msi_;
 276   bool verbose_logging_;
 277   bool ensure_google_update_present_;
 278
 279  private:
 280   DISALLOW_COPY_AND_ASSIGN(InstallerState);
 281 };  // class InstallerState
 282
 283 }  // namespace installer
 284
 285 #endif  // CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_