chrome/installer/util/installer_state.cc

   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 #include "chrome/installer/util/installer_state.h"
   6
   7 #include <algorithm>
   8 #include <functional>
   9 #include <utility>
  10
  11 #include "base/command_line.h"
  12 #include "base/file_util.h"
  13 #include "base/file_version_info.h"
  14 #include "base/files/file_enumerator.h"
  15 #include "base/logging.h"
  16 #include "base/memory/scoped_ptr.h"
  17 #include "base/strings/string_util.h"
  18 #include "base/strings/utf_string_conversions.h"
  19 #include "base/win/registry.h"
  20 #include "base/win/scoped_handle.h"
  21 #include "chrome/installer/util/delete_tree_work_item.h"
  22 #include "chrome/installer/util/helper.h"
  23 #include "chrome/installer/util/install_util.h"
  24 #include "chrome/installer/util/installation_state.h"
  25 #include "chrome/installer/util/master_preferences.h"
  26 #include "chrome/installer/util/master_preferences_constants.h"
  27 #include "chrome/installer/util/product.h"
  28 #include "chrome/installer/util/work_item.h"
  29 #include "chrome/installer/util/work_item_list.h"
  30
  31 namespace installer {
  32
  33 bool InstallerState::IsMultiInstallUpdate(const MasterPreferences& prefs,
  34     const InstallationState& machine_state) {
  35   // First, is the package present?
  36   const ProductState* package =
  37       machine_state.GetProductState(level_ == SYSTEM_LEVEL,
  38                                     BrowserDistribution::CHROME_BINARIES);
  39   if (package == NULL) {
  40     // The multi-install package has not been installed, so it certainly isn't
  41     // being updated.
  42     return false;
  43   }
  44
  45   BrowserDistribution::Type types[2];
  46   size_t num_types = 0;
  47   if (prefs.install_chrome())
  48     types[num_types++] = BrowserDistribution::CHROME_BROWSER;
  49   if (prefs.install_chrome_frame())
  50     types[num_types++] = BrowserDistribution::CHROME_FRAME;
  51
  52   for (const BrowserDistribution::Type* scan = &types[0],
  53            *end = &types[num_types]; scan != end; ++scan) {
  54     const ProductState* product =
  55         machine_state.GetProductState(level_ == SYSTEM_LEVEL, *scan);
  56     if (product == NULL) {
  57       VLOG(2) << "It seems that distribution type " << *scan
  58               << " is being installed for the first time.";
  59       return false;
  60     }
  61     if (!product->channel().Equals(package->channel())) {
  62       VLOG(2) << "It seems that distribution type " << *scan
  63               << " is being over installed.";
  64       return false;
  65     }
  66   }
  67
  68   VLOG(2) << "It seems that the package is being updated.";
  69
  70   return true;
  71 }
  72
  73 InstallerState::InstallerState()
  74     : operation_(UNINITIALIZED),
  75       multi_package_distribution_(NULL),
  76       level_(UNKNOWN_LEVEL),
  77       package_type_(UNKNOWN_PACKAGE_TYPE),
  78       state_type_(BrowserDistribution::CHROME_BROWSER),
  79       root_key_(NULL),
  80       msi_(false),
  81       verbose_logging_(false),
  82       ensure_google_update_present_(false) {
  83 }
  84
  85 InstallerState::InstallerState(Level level)
  86     : operation_(UNINITIALIZED),
  87       multi_package_distribution_(NULL),
  88       level_(UNKNOWN_LEVEL),
  89       package_type_(UNKNOWN_PACKAGE_TYPE),
  90       state_type_(BrowserDistribution::CHROME_BROWSER),
  91       root_key_(NULL),
  92       msi_(false),
  93       verbose_logging_(false),
  94       ensure_google_update_present_(false) {
  95   // Use set_level() so that root_key_ is updated properly.
  96   set_level(level);
  97 }
  98
  99 void InstallerState::Initialize(const CommandLine& command_line,
 100                                 const MasterPreferences& prefs,
 101                                 const InstallationState& machine_state) {
 102   bool pref_bool;
 103   if (!prefs.GetBool(master_preferences::kSystemLevel, &pref_bool))
 104     pref_bool = false;
 105   set_level(pref_bool ? SYSTEM_LEVEL : USER_LEVEL);
 106
 107   if (!prefs.GetBool(master_preferences::kVerboseLogging, &verbose_logging_))
 108     verbose_logging_ = false;
 109
 110   if (!prefs.GetBool(master_preferences::kMultiInstall, &pref_bool))
 111     pref_bool = false;
 112   set_package_type(pref_bool ? MULTI_PACKAGE : SINGLE_PACKAGE);
 113
 114   if (!prefs.GetBool(master_preferences::kMsi, &msi_))
 115     msi_ = false;
 116
 117   ensure_google_update_present_ =
 118       command_line.HasSwitch(installer::switches::kEnsureGoogleUpdatePresent);
 119
 120   const bool is_uninstall = command_line.HasSwitch(switches::kUninstall);
 121
 122   if (prefs.install_chrome()) {
 123     Product* p = AddProductFromPreferences(
 124         BrowserDistribution::CHROME_BROWSER, prefs, machine_state);
 125     VLOG(1) << (is_uninstall ? "Uninstall" : "Install")
 126             << " distribution: " << p->distribution()->GetAppShortCutName();
 127   }
 128   if (prefs.install_chrome_frame()) {
 129     Product* p = AddProductFromPreferences(
 130         BrowserDistribution::CHROME_FRAME, prefs, machine_state);
 131     VLOG(1) << (is_uninstall ? "Uninstall" : "Install")
 132             << " distribution: " << p->distribution()->GetAppShortCutName();
 133   }
 134
 135   if (prefs.install_chrome_app_launcher()) {
 136     Product* p = AddProductFromPreferences(
 137         BrowserDistribution::CHROME_APP_HOST, prefs, machine_state);
 138     VLOG(1) << (is_uninstall ? "Uninstall" : "Install")
 139             << " distribution: " << p->distribution()->GetAppShortCutName();
 140   }
 141
 142   if (!is_uninstall && is_multi_install()) {
 143     bool need_binaries = false;
 144     if (FindProduct(BrowserDistribution::CHROME_APP_HOST)) {
 145       // App Host will happily use Chrome at system level, or binaries at system
 146       // level, even if app host is user level.
 147       const ProductState* chrome_state = machine_state.GetProductState(
 148           true,  // system level
 149           BrowserDistribution::CHROME_BROWSER);
 150       // If Chrome is at system-level, multi- or otherwise. We'll use it.
 151       if (!chrome_state) {
 152         const ProductState* binaries_state = machine_state.GetProductState(
 153             true,  // system level
 154             BrowserDistribution::CHROME_BINARIES);
 155         if (!binaries_state)
 156           need_binaries = true;
 157       }
 158     }
 159
 160     // Chrome/Chrome Frame multi need Binaries at their own level.
 161     if (FindProduct(BrowserDistribution::CHROME_BROWSER))
 162       need_binaries = true;
 163
 164     if (FindProduct(BrowserDistribution::CHROME_FRAME))
 165       need_binaries = true;
 166
 167     if (need_binaries && !FindProduct(BrowserDistribution::CHROME_BINARIES)) {
 168       // Force binaries to be installed/updated.
 169       Product* p = AddProductFromPreferences(
 170           BrowserDistribution::CHROME_BINARIES, prefs, machine_state);
 171       VLOG(1) << "Install distribution: "
 172               << p->distribution()->GetAppShortCutName();
 173     }
 174   }
 175
 176   if (is_uninstall && prefs.is_multi_install()) {
 177     if (FindProduct(BrowserDistribution::CHROME_BROWSER)) {
 178       // Uninstall each product of type |type| listed below based on the
 179       // presence or absence of |switch_name| in that product's uninstall
 180       // command.
 181       const struct {
 182         BrowserDistribution::Type type;
 183         const char* switch_name;
 184         bool switch_expected;
 185       } conditional_additions[] = {
 186         // If Chrome Frame is installed in Ready Mode, remove it with Chrome.
 187         { BrowserDistribution::CHROME_FRAME,
 188           switches::kChromeFrameReadyMode,
 189           true },
 190         // If the App Host is installed, but not the App Launcher, remove it
 191         // with Chrome. Note however that for system-level Chrome uninstalls,
 192         // any installed user-level App Host will remain even if there is no
 193         // App Launcher present (the orphaned app_host.exe will prompt the user
 194         // for further action when executed).
 195         { BrowserDistribution::CHROME_APP_HOST,
 196           switches::kChromeAppLauncher,
 197           false },
 198       };
 199
 200       for (size_t i = 0; i < arraysize(conditional_additions); ++i) {
 201         const ProductState* product_state = machine_state.GetProductState(
 202             system_install(), conditional_additions[i].type);
 203         if (product_state != NULL &&
 204             product_state->uninstall_command().HasSwitch(
 205                 conditional_additions[i].switch_name) ==
 206                     conditional_additions[i].switch_expected &&
 207             !FindProduct(conditional_additions[i].type)) {
 208           Product* p = AddProductFromPreferences(
 209               conditional_additions[i].type, prefs, machine_state);
 210           VLOG(1) << "Uninstall distribution: "
 211                   << p->distribution()->GetAppShortCutName();
 212         }
 213       }
 214     }
 215
 216     bool keep_binaries = false;
 217     // Look for a multi-install product that is not the binaries and that is not
 218     // being uninstalled. If not found, binaries are uninstalled too.
 219     for (size_t i = 0; i < BrowserDistribution::NUM_TYPES; ++i) {
 220       BrowserDistribution::Type type =
 221           static_cast<BrowserDistribution::Type>(i);
 222
 223       if (type == BrowserDistribution::CHROME_BINARIES)
 224         continue;
 225
 226       const ProductState* product_state =
 227           machine_state.GetProductState(system_install(), type);
 228       if (product_state == NULL) {
 229         // The product is not installed.
 230         continue;
 231       }
 232
 233       if (!product_state->is_multi_install() &&
 234           type != BrowserDistribution::CHROME_BROWSER) {
 235         // The product is not sharing the binaries. It is ordinarily impossible
 236         // for single-install Chrome to be installed along with any
 237         // multi-install product. Treat single-install Chrome the same as any
 238         // multi-install product just in case the impossible happens.
 239         continue;
 240       }
 241
 242       // The product is installed.
 243
 244       if (!FindProduct(type)) {
 245         // The product is not being uninstalled.
 246         if (type != BrowserDistribution::CHROME_APP_HOST) {
 247           keep_binaries = true;
 248           break;
 249         } else {
 250           // If binaries/chrome are at system-level, we can discard them at
 251           // user-level...
 252           if (!machine_state.GetProductState(
 253                   true,  // system-level
 254                   BrowserDistribution::CHROME_BROWSER) &&
 255               !machine_state.GetProductState(
 256                   true,  // system-level
 257                   BrowserDistribution::CHROME_BINARIES)) {
 258             // ... otherwise keep them.
 259             keep_binaries = true;
 260             break;
 261           }
 262
 263         }
 264       }
 265
 266       // The product is being uninstalled.
 267     }
 268     if (!keep_binaries &&
 269         machine_state.GetProductState(system_install(),
 270                                       BrowserDistribution::CHROME_BINARIES)) {
 271       Product* p = AddProductFromPreferences(
 272           BrowserDistribution::CHROME_BINARIES, prefs, machine_state);
 273       VLOG(1) << (is_uninstall ? "Uninstall" : "Install")
 274               << " distribution: " << p->distribution()->GetAppShortCutName();
 275     }
 276   }
 277
 278   BrowserDistribution* operand = NULL;
 279
 280   if (is_uninstall) {
 281     operation_ = UNINSTALL;
 282   } else if (!prefs.is_multi_install()) {
 283     // For a single-install, the current browser dist is the operand.
 284     operand = BrowserDistribution::GetDistribution();
 285     operation_ = SINGLE_INSTALL_OR_UPDATE;
 286   } else if (IsMultiInstallUpdate(prefs, machine_state)) {
 287     // Updates driven by Google Update take place under the multi-installer's
 288     // app guid.
 289     operand = multi_package_distribution_;
 290     operation_ = MULTI_UPDATE;
 291   } else {
 292     operation_ = MULTI_INSTALL;
 293   }
 294
 295   // Initial, over, and un-installs will take place under one of the
 296   // product app guids (Chrome, Chrome Frame, App Host, or Binaries, in order of
 297   // preference).
 298   if (operand == NULL) {
 299     BrowserDistribution::Type operand_distribution_type =
 300         BrowserDistribution::CHROME_BINARIES;
 301     if (prefs.install_chrome())
 302       operand_distribution_type = BrowserDistribution::CHROME_BROWSER;
 303     else if (prefs.install_chrome_frame())
 304       operand_distribution_type = BrowserDistribution::CHROME_FRAME;
 305     else if (prefs.install_chrome_app_launcher())
 306       operand_distribution_type = BrowserDistribution::CHROME_APP_HOST;
 307
 308     operand = BrowserDistribution::GetSpecificDistribution(
 309         operand_distribution_type);
 310   }
 311
 312   state_key_ = operand->GetStateKey();
 313   state_type_ = operand->GetType();
 314
 315   // Parse --critical-update-version=W.X.Y.Z
 316   std::string critical_version_value(
 317       command_line.GetSwitchValueASCII(switches::kCriticalUpdateVersion));
 318   critical_update_version_ = Version(critical_version_value);
 319 }
 320
 321 void InstallerState::set_level(Level level) {
 322   level_ = level;
 323   switch (level) {
 324     case USER_LEVEL:
 325       root_key_ = HKEY_CURRENT_USER;
 326       break;
 327     case SYSTEM_LEVEL:
 328       root_key_ = HKEY_LOCAL_MACHINE;
 329       break;
 330     default:
 331       DCHECK(level == UNKNOWN_LEVEL);
 332       level_ = UNKNOWN_LEVEL;
 333       root_key_ = NULL;
 334       break;
 335   }
 336 }
 337
 338 void InstallerState::set_package_type(PackageType type) {
 339   package_type_ = type;
 340   switch (type) {
 341     case SINGLE_PACKAGE:
 342       multi_package_distribution_ = NULL;
 343       break;
 344     case MULTI_PACKAGE:
 345       multi_package_distribution_ =
 346           BrowserDistribution::GetSpecificDistribution(
 347               BrowserDistribution::CHROME_BINARIES);
 348       break;
 349     default:
 350       DCHECK(type == UNKNOWN_PACKAGE_TYPE);
 351       package_type_ = UNKNOWN_PACKAGE_TYPE;
 352       multi_package_distribution_ = NULL;
 353       break;
 354   }
 355 }
 356
 357 // Returns the Chrome binaries directory for multi-install or |dist|'s directory
 358 // otherwise.
 359 base::FilePath InstallerState::GetDefaultProductInstallPath(
 360     BrowserDistribution* dist) const {
 361   DCHECK(dist);
 362   DCHECK(package_type_ != UNKNOWN_PACKAGE_TYPE);
 363
 364   if (package_type_ == SINGLE_PACKAGE) {
 365     return GetChromeInstallPath(system_install(), dist);
 366   } else {
 367     return GetChromeInstallPath(system_install(),
 368         BrowserDistribution::GetSpecificDistribution(
 369             BrowserDistribution::CHROME_BINARIES));
 370   }
 371 }
 372
 373 // Evaluates a product's eligibility for participation in this operation.
 374 // We never expect these checks to fail, hence they all terminate the process in
 375 // debug builds.  See the log messages for details.
 376 bool InstallerState::CanAddProduct(const Product& product,
 377                                    const base::FilePath* product_dir) const {
 378   switch (package_type_) {
 379     case SINGLE_PACKAGE:
 380       if (!products_.empty()) {
 381         LOG(DFATAL) << "Cannot process more than one single-install product.";
 382         return false;
 383       }
 384       break;
 385     case MULTI_PACKAGE:
 386       if (!product.HasOption(kOptionMultiInstall)) {
 387         LOG(DFATAL) << "Cannot process a single-install product with a "
 388                        "multi-install state.";
 389         return false;
 390       }
 391       if (FindProduct(product.distribution()->GetType()) != NULL) {
 392         LOG(DFATAL) << "Cannot process more than one product of the same type.";
 393         return false;
 394       }
 395       if (!target_path_.empty()) {
 396         base::FilePath default_dir;
 397         if (product_dir == NULL)
 398           default_dir = GetDefaultProductInstallPath(product.distribution());
 399         if (!base::FilePath::CompareEqualIgnoreCase(
 400                 (product_dir == NULL ? default_dir : *product_dir).value(),
 401                 target_path_.value())) {
 402           LOG(DFATAL) << "Cannot process products in different directories.";
 403           return false;
 404         }
 405       }
 406       break;
 407     default:
 408       DCHECK_EQ(UNKNOWN_PACKAGE_TYPE, package_type_);
 409       break;
 410   }
 411   return true;
 412 }
 413
 414 // Adds |product|, installed in |product_dir| to this object's collection.  If
 415 // |product_dir| is NULL, the product's default install location is used.
 416 // Returns NULL if |product| is incompatible with this object.  Otherwise,
 417 // returns a pointer to the product (ownership is held by this object).
 418 Product* InstallerState::AddProductInDirectory(
 419     const base::FilePath* product_dir,
 420     scoped_ptr<Product>* product) {
 421   DCHECK(product != NULL);
 422   DCHECK(product->get() != NULL);
 423   const Product& the_product = *product->get();
 424
 425   if (!CanAddProduct(the_product, product_dir))
 426     return NULL;
 427
 428   if (package_type_ == UNKNOWN_PACKAGE_TYPE) {
 429     set_package_type(the_product.HasOption(kOptionMultiInstall) ?
 430                          MULTI_PACKAGE : SINGLE_PACKAGE);
 431   }
 432
 433   if (target_path_.empty()) {
 434     if (product_dir == NULL)
 435       target_path_ = GetDefaultProductInstallPath(the_product.distribution());
 436     else
 437       target_path_ = *product_dir;
 438   }
 439
 440   if (state_key_.empty())
 441     state_key_ = the_product.distribution()->GetStateKey();
 442
 443   products_.push_back(product->release());
 444   return products_[products_.size() - 1];
 445 }
 446
 447 Product* InstallerState::AddProduct(scoped_ptr<Product>* product) {
 448   return AddProductInDirectory(NULL, product);
 449 }
 450
 451 // Adds a product of type |distribution_type| constructed on the basis of
 452 // |prefs|, setting this object's msi flag if the product is represented in
 453 // |machine_state| and is msi-installed.  Returns the product that was added,
 454 // or NULL if |state| is incompatible with this object.  Ownership is not passed
 455 // to the caller.
 456 Product* InstallerState::AddProductFromPreferences(
 457     BrowserDistribution::Type distribution_type,
 458     const MasterPreferences& prefs,
 459     const InstallationState& machine_state) {
 460   scoped_ptr<Product> product_ptr(
 461       new Product(BrowserDistribution::GetSpecificDistribution(
 462           distribution_type)));
 463   product_ptr->InitializeFromPreferences(prefs);
 464
 465   Product* product = AddProductInDirectory(NULL, &product_ptr);
 466
 467   if (product != NULL && !msi_) {
 468     const ProductState* product_state = machine_state.GetProductState(
 469         system_install(), distribution_type);
 470     if (product_state != NULL)
 471       msi_ = product_state->is_msi();
 472   }
 473
 474   return product;
 475 }
 476
 477 Product* InstallerState::AddProductFromState(
 478     BrowserDistribution::Type type,
 479     const ProductState& state) {
 480   scoped_ptr<Product> product_ptr(
 481       new Product(BrowserDistribution::GetSpecificDistribution(type)));
 482   product_ptr->InitializeFromUninstallCommand(state.uninstall_command());
 483
 484   // Strip off <version>/Installer/setup.exe; see GetInstallerDirectory().
 485   base::FilePath product_dir =
 486       state.GetSetupPath().DirName().DirName().DirName();
 487
 488   Product* product = AddProductInDirectory(&product_dir, &product_ptr);
 489
 490   if (product != NULL)
 491     msi_ |= state.is_msi();
 492
 493   return product;
 494 }
 495
 496 bool InstallerState::system_install() const {
 497   DCHECK(level_ == USER_LEVEL || level_ == SYSTEM_LEVEL);
 498   return level_ == SYSTEM_LEVEL;
 499 }
 500
 501 bool InstallerState::is_multi_install() const {
 502   DCHECK(package_type_ == SINGLE_PACKAGE || package_type_ == MULTI_PACKAGE);
 503   return package_type_ != SINGLE_PACKAGE;
 504 }
 505
 506 bool InstallerState::RemoveProduct(const Product* product) {
 507   ScopedVector<Product>::iterator it =
 508       std::find(products_.begin(), products_.end(), product);
 509   if (it != products_.end()) {
 510     products_.weak_erase(it);
 511     return true;
 512   }
 513   return false;
 514 }
 515
 516 const Product* InstallerState::FindProduct(
 517     BrowserDistribution::Type distribution_type) const {
 518   for (Products::const_iterator scan = products_.begin(), end = products_.end();
 519        scan != end; ++scan) {
 520      if ((*scan)->is_type(distribution_type))
 521        return *scan;
 522   }
 523   return NULL;
 524 }
 525
 526 Version* InstallerState::GetCurrentVersion(
 527     const InstallationState& machine_state) const {
 528   DCHECK(!products_.empty());
 529   scoped_ptr<Version> current_version;
 530   // If we're doing a multi-install, the current version may be either an
 531   // existing multi or an existing single product that is being migrated
 532   // in place (i.e., Chrome).  In the latter case, there is no existing
 533   // CHROME_BINARIES installation so we need to search for the product.
 534   BrowserDistribution::Type prod_type;
 535   if (package_type_ == MULTI_PACKAGE) {
 536     prod_type = BrowserDistribution::CHROME_BINARIES;
 537     if (machine_state.GetProductState(level_ == SYSTEM_LEVEL,
 538                                       prod_type) == NULL) {
 539       // Search for a product on which we're operating that is installed in our
 540       // target directory.
 541       Products::const_iterator end = products().end();
 542       for (Products::const_iterator scan = products().begin(); scan != end;
 543            ++scan) {
 544         BrowserDistribution::Type product_type =
 545             (*scan)->distribution()->GetType();
 546         const ProductState* state =
 547             machine_state.GetProductState(level_ == SYSTEM_LEVEL, product_type);
 548         if (state != NULL && target_path_.IsParent(state->GetSetupPath())) {
 549           prod_type = product_type;
 550           break;
 551         }
 552       }
 553     }
 554   } else {
 555     prod_type = products_[0]->distribution()->GetType();
 556   }
 557   const ProductState* product_state =
 558       machine_state.GetProductState(level_ == SYSTEM_LEVEL, prod_type);
 559
 560   if (product_state != NULL) {
 561     const Version* version = NULL;
 562
 563     // Be aware that there might be a pending "new_chrome.exe" already in the
 564     // installation path.  If so, we use old_version, which holds the version of
 565     // "chrome.exe" itself.
 566     if (base::PathExists(target_path().Append(kChromeNewExe)))
 567       version = product_state->old_version();
 568
 569     if (version == NULL)
 570       version = &product_state->version();
 571
 572     current_version.reset(new Version(*version));
 573   }
 574
 575   return current_version.release();
 576 }
 577
 578 Version InstallerState::DetermineCriticalVersion(
 579     const Version* current_version,
 580     const Version& new_version) const {
 581   DCHECK(current_version == NULL || current_version->IsValid());
 582   DCHECK(new_version.IsValid());
 583   if (critical_update_version_.IsValid() &&
 584       (current_version == NULL ||
 585        (current_version->CompareTo(critical_update_version_) < 0)) &&
 586       new_version.CompareTo(critical_update_version_) >= 0) {
 587     return critical_update_version_;
 588   }
 589   return Version();
 590 }
 591
 592 bool InstallerState::IsChromeFrameRunning(
 593     const InstallationState& machine_state) const {
 594   // We check only for the current version (e.g. the version we are upgrading
 595   // _from_). We don't need to check interstitial versions if any (as would
 596   // occur in the case of multiple updates) since if they are in use, we are
 597   // guaranteed that the current version is in use too.
 598   bool in_use = false;
 599   scoped_ptr<Version> current_version(GetCurrentVersion(machine_state));
 600   if (current_version != NULL) {
 601     base::FilePath cf_install_path(
 602         target_path().AppendASCII(current_version->GetString())
 603                      .Append(kChromeFrameDll));
 604     in_use = base::PathExists(cf_install_path) &&
 605         IsFileInUse(cf_install_path);
 606   }
 607   return in_use;
 608 }
 609
 610 base::FilePath InstallerState::GetInstallerDirectory(
 611     const Version& version) const {
 612   return target_path().Append(ASCIIToWide(version.GetString()))
 613       .Append(kInstallerDir);
 614 }
 615
 616 // static
 617 bool InstallerState::IsFileInUse(const base::FilePath& file) {
 618   // Call CreateFile with a share mode of 0 which should cause this to fail
 619   // with ERROR_SHARING_VIOLATION if the file exists and is in-use.
 620   return !base::win::ScopedHandle(CreateFile(file.value().c_str(),
 621                                              GENERIC_WRITE, 0, NULL,
 622                                              OPEN_EXISTING, 0, 0)).IsValid();
 623 }
 624
 625 void InstallerState::GetExistingExeVersions(
 626     std::set<std::string>* existing_versions) const {
 627
 628   static const wchar_t* const kChromeFilenames[] = {
 629     installer::kChromeExe,
 630     installer::kChromeNewExe,
 631     installer::kChromeOldExe,
 632   };
 633
 634   for (int i = 0; i < arraysize(kChromeFilenames); ++i) {
 635     base::FilePath chrome_exe(target_path().Append(kChromeFilenames[i]));
 636     scoped_ptr<FileVersionInfo> file_version_info(
 637         FileVersionInfo::CreateFileVersionInfo(chrome_exe));
 638     if (file_version_info) {
 639       string16 version_string = file_version_info->file_version();
 640       if (!version_string.empty() && IsStringASCII(version_string))
 641         existing_versions->insert(WideToASCII(version_string));
 642     }
 643   }
 644 }
 645
 646 void InstallerState::RemoveOldVersionDirectories(
 647     const Version& new_version,
 648     Version* existing_version,
 649     const base::FilePath& temp_path) const {
 650   Version version;
 651   scoped_ptr<WorkItem> item;
 652
 653   std::set<std::string> existing_version_strings;
 654   existing_version_strings.insert(new_version.GetString());
 655   if (existing_version)
 656     existing_version_strings.insert(existing_version->GetString());
 657
 658   // Make sure not to delete any version dir that is "referenced" by an existing
 659   // Chrome executable.
 660   GetExistingExeVersions(&existing_version_strings);
 661
 662   // Try to delete all directories that are not in the set we care to keep.
 663   base::FileEnumerator version_enum(target_path(), false,
 664                                     base::FileEnumerator::DIRECTORIES);
 665   for (base::FilePath next_version = version_enum.Next(); !next_version.empty();
 666        next_version = version_enum.Next()) {
 667     base::FilePath dir_name(next_version.BaseName());
 668     version = Version(WideToASCII(dir_name.value()));
 669     // Delete the version folder if it is less than the new version and not
 670     // equal to the old version (if we have an old version).
 671     if (version.IsValid() &&
 672         existing_version_strings.count(version.GetString()) == 0) {
 673       // Note: temporarily log old version deletion at ERROR level to make it
 674       // more likely we see this in the installer log.
 675       LOG(ERROR) << "Deleting old version directory: " << next_version.value();
 676
 677       // Attempt to recursively delete the old version dir.
 678       bool delete_succeeded = base::DeleteFile(next_version, true);
 679
 680       // Note: temporarily log old version deletion at ERROR level to make it
 681       // more likely we see this in the installer log.
 682       LOG_IF(ERROR, !delete_succeeded)
 683           << "Failed to delete old version directory: " << next_version.value();
 684     }
 685   }
 686 }
 687
 688 void InstallerState::AddComDllList(
 689     std::vector<base::FilePath>* com_dll_list) const {
 690   std::for_each(products_.begin(), products_.end(),
 691                 std::bind2nd(std::mem_fun(&Product::AddComDllList),
 692                              com_dll_list));
 693 }
 694
 695 bool InstallerState::SetChannelFlags(bool set,
 696                                      ChannelInfo* channel_info) const {
 697   bool modified = false;
 698   for (Products::const_iterator scan = products_.begin(), end = products_.end();
 699        scan != end; ++scan) {
 700      modified |= (*scan)->SetChannelFlags(set, channel_info);
 701   }
 702   return modified;
 703 }
 704
 705 void InstallerState::UpdateStage(installer::InstallerStage stage) const {
 706   InstallUtil::UpdateInstallerStage(system_install(), state_key_, stage);
 707 }
 708
 709 void InstallerState::UpdateChannels() const {
 710   if (operation_ != MULTI_INSTALL && operation_ != MULTI_UPDATE) {
 711     VLOG(1) << "InstallerState::UpdateChannels noop: " << operation_;
 712     return;
 713   }
 714
 715   // Update the "ap" value for the product being installed/updated.  We get the
 716   // current value from the registry since the InstallationState instance used
 717   // by the bulk of the installer does not track changes made by UpdateStage.
 718   // Create the app's ClientState key if it doesn't exist.
 719   ChannelInfo channel_info;
 720   base::win::RegKey state_key;
 721   LONG result = state_key.Create(root_key_, state_key_.c_str(),
 722                                  KEY_QUERY_VALUE | KEY_SET_VALUE);
 723   if (result == ERROR_SUCCESS) {
 724     channel_info.Initialize(state_key);
 725
 726     // This is a multi-install product.
 727     bool modified = channel_info.SetMultiInstall(true);
 728
 729     // Add the appropriate modifiers for all products and their options.
 730     modified |= SetChannelFlags(true, &channel_info);
 731
 732     VLOG(1) << "ap: " << channel_info.value();
 733
 734     // Write the results if needed.
 735     if (modified)
 736       channel_info.Write(&state_key);
 737
 738     // Remove the -stage: modifier since we don't want to propagate that to the
 739     // other app_guids.
 740     channel_info.SetStage(NULL);
 741
 742     // Synchronize the other products and the package with this one.
 743     ChannelInfo other_info;
 744     for (int i = 0; i < BrowserDistribution::NUM_TYPES; ++i) {
 745       BrowserDistribution::Type type =
 746           static_cast<BrowserDistribution::Type>(i);
 747       // Skip the app_guid we started with.
 748       if (type == state_type_)
 749         continue;
 750       BrowserDistribution* dist = NULL;
 751       // Always operate on the binaries.
 752       if (i == BrowserDistribution::CHROME_BINARIES) {
 753         dist = multi_package_distribution_;
 754       } else {
 755         const Product* product = FindProduct(type);
 756         // Skip this one if it's for a product we're not operating on.
 757         if (product == NULL)
 758           continue;
 759         dist = product->distribution();
 760       }
 761       result = state_key.Create(root_key_, dist->GetStateKey().c_str(),
 762                                 KEY_QUERY_VALUE | KEY_SET_VALUE);
 763       if (result == ERROR_SUCCESS) {
 764         other_info.Initialize(state_key);
 765         if (!other_info.Equals(channel_info))
 766           channel_info.Write(&state_key);
 767       } else {
 768         LOG(ERROR) << "Failed opening key " << dist->GetStateKey()
 769                    << " to update app channels; result: " << result;
 770       }
 771     }
 772   } else {
 773     LOG(ERROR) << "Failed opening key " << state_key_
 774                << " to update app channels; result: " << result;
 775   }
 776 }
 777
 778 void InstallerState::WriteInstallerResult(
 779     InstallStatus status,
 780     int string_resource_id,
 781     const std::wstring* const launch_cmd) const {
 782   DWORD installer_result =
 783       (InstallUtil::GetInstallReturnCode(status) == 0) ? 0 : 1;
 784   // Use a no-rollback list since this is a best-effort deal.
 785   scoped_ptr<WorkItemList> install_list(
 786       WorkItem::CreateNoRollbackWorkItemList());
 787   const bool system_install = this->system_install();
 788   // Write the value for all products upon which we're operating.
 789   Products::const_iterator end = products().end();
 790   for (Products::const_iterator scan = products().begin(); scan != end;
 791        ++scan) {
 792     InstallUtil::AddInstallerResultItems(
 793         system_install, (*scan)->distribution()->GetStateKey(), status,
 794         string_resource_id, launch_cmd, install_list.get());
 795   }
 796   // And for the binaries if this is a multi-install.
 797   if (is_multi_install()) {
 798     InstallUtil::AddInstallerResultItems(
 799         system_install, multi_package_binaries_distribution()->GetStateKey(),
 800         status, string_resource_id, launch_cmd, install_list.get());
 801   }
 802   if (!install_list->Do())
 803     LOG(ERROR) << "Failed to record installer error information in registry.";
 804 }
 805
 806 bool InstallerState::RequiresActiveSetup() const {
 807   return system_install() && FindProduct(BrowserDistribution::CHROME_BROWSER);
 808 }
 809
 810 }  // namespace installer