installer_state.cc revision 868fa2fe829687343ffae624259930155e16dbd8 
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
31namespace installer {
32
33bool 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
73InstallerState::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
85InstallerState::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
99void 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 product that is not the binaries and that is not being
218    // 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      if (machine_state.GetProductState(system_install(), type) == NULL) {
227        // The product is not installed.
228        continue;
229      }
230
231      // The product is installed.
232
233      if (!FindProduct(type)) {
234        // The product is not being uninstalled.
235        if (type != BrowserDistribution::CHROME_APP_HOST) {
236          keep_binaries = true;
237          break;
238        } else {
239          // If binaries/chrome are at system-level, we can discard them at
240          // user-level...
241          if (!machine_state.GetProductState(
242                  true,  // system-level
243                  BrowserDistribution::CHROME_BROWSER) &&
244              !machine_state.GetProductState(
245                  true,  // system-level
246                  BrowserDistribution::CHROME_BINARIES)) {
247            // ... otherwise keep them.
248            keep_binaries = true;
249            break;
250          }
251
252        }
253      }
254
255      // The product is being uninstalled.
256    }
257    if (!keep_binaries &&
258        machine_state.GetProductState(system_install(),
259                                      BrowserDistribution::CHROME_BINARIES)) {
260      Product* p = AddProductFromPreferences(
261          BrowserDistribution::CHROME_BINARIES, prefs, machine_state);
262      VLOG(1) << (is_uninstall ? "Uninstall" : "Install")
263              << " distribution: " << p->distribution()->GetAppShortCutName();
264    }
265  }
266
267  BrowserDistribution* operand = NULL;
268
269  if (is_uninstall) {
270    operation_ = UNINSTALL;
271  } else if (!prefs.is_multi_install()) {
272    // For a single-install, the current browser dist is the operand.
273    operand = BrowserDistribution::GetDistribution();
274    operation_ = SINGLE_INSTALL_OR_UPDATE;
275  } else if (IsMultiInstallUpdate(prefs, machine_state)) {
276    // Updates driven by Google Update take place under the multi-installer's
277    // app guid.
278    operand = multi_package_distribution_;
279    operation_ = MULTI_UPDATE;
280  } else {
281    operation_ = MULTI_INSTALL;
282  }
283
284  // Initial, over, and un-installs will take place under one of the
285  // product app guids (Chrome, Chrome Frame, App Host, or Binaries, in order of
286  // preference).
287  if (operand == NULL) {
288    BrowserDistribution::Type operand_distribution_type =
289        BrowserDistribution::CHROME_BINARIES;
290    if (prefs.install_chrome())
291      operand_distribution_type = BrowserDistribution::CHROME_BROWSER;
292    else if (prefs.install_chrome_frame())
293      operand_distribution_type = BrowserDistribution::CHROME_FRAME;
294    else if (prefs.install_chrome_app_launcher())
295      operand_distribution_type = BrowserDistribution::CHROME_APP_HOST;
296
297    operand = BrowserDistribution::GetSpecificDistribution(
298        operand_distribution_type);
299  }
300
301  state_key_ = operand->GetStateKey();
302  state_type_ = operand->GetType();
303
304  // Parse --critical-update-version=W.X.Y.Z
305  std::string critical_version_value(
306      command_line.GetSwitchValueASCII(switches::kCriticalUpdateVersion));
307  critical_update_version_ = Version(critical_version_value);
308}
309
310void InstallerState::set_level(Level level) {
311  level_ = level;
312  switch (level) {
313    case USER_LEVEL:
314      root_key_ = HKEY_CURRENT_USER;
315      break;
316    case SYSTEM_LEVEL:
317      root_key_ = HKEY_LOCAL_MACHINE;
318      break;
319    default:
320      DCHECK(level == UNKNOWN_LEVEL);
321      level_ = UNKNOWN_LEVEL;
322      root_key_ = NULL;
323      break;
324  }
325}
326
327void InstallerState::set_package_type(PackageType type) {
328  package_type_ = type;
329  switch (type) {
330    case SINGLE_PACKAGE:
331      multi_package_distribution_ = NULL;
332      break;
333    case MULTI_PACKAGE:
334      multi_package_distribution_ =
335          BrowserDistribution::GetSpecificDistribution(
336              BrowserDistribution::CHROME_BINARIES);
337      break;
338    default:
339      DCHECK(type == UNKNOWN_PACKAGE_TYPE);
340      package_type_ = UNKNOWN_PACKAGE_TYPE;
341      multi_package_distribution_ = NULL;
342      break;
343  }
344}
345
346// Returns the Chrome binaries directory for multi-install or |dist|'s directory
347// otherwise.
348base::FilePath InstallerState::GetDefaultProductInstallPath(
349    BrowserDistribution* dist) const {
350  DCHECK(dist);
351  DCHECK(package_type_ != UNKNOWN_PACKAGE_TYPE);
352
353  if (package_type_ == SINGLE_PACKAGE) {
354    return GetChromeInstallPath(system_install(), dist);
355  } else {
356    return GetChromeInstallPath(system_install(),
357        BrowserDistribution::GetSpecificDistribution(
358            BrowserDistribution::CHROME_BINARIES));
359  }
360}
361
362// Evaluates a product's eligibility for participation in this operation.
363// We never expect these checks to fail, hence they all terminate the process in
364// debug builds.  See the log messages for details.
365bool InstallerState::CanAddProduct(const Product& product,
366                                   const base::FilePath* product_dir) const {
367  switch (package_type_) {
368    case SINGLE_PACKAGE:
369      if (!products_.empty()) {
370        LOG(DFATAL) << "Cannot process more than one single-install product.";
371        return false;
372      }
373      break;
374    case MULTI_PACKAGE:
375      if (!product.HasOption(kOptionMultiInstall)) {
376        LOG(DFATAL) << "Cannot process a single-install product with a "
377                       "multi-install state.";
378        return false;
379      }
380      if (FindProduct(product.distribution()->GetType()) != NULL) {
381        LOG(DFATAL) << "Cannot process more than one product of the same type.";
382        return false;
383      }
384      if (!target_path_.empty()) {
385        base::FilePath default_dir;
386        if (product_dir == NULL)
387          default_dir = GetDefaultProductInstallPath(product.distribution());
388        if (!base::FilePath::CompareEqualIgnoreCase(
389                (product_dir == NULL ? default_dir : *product_dir).value(),
390                target_path_.value())) {
391          LOG(DFATAL) << "Cannot process products in different directories.";
392          return false;
393        }
394      }
395      break;
396    default:
397      DCHECK_EQ(UNKNOWN_PACKAGE_TYPE, package_type_);
398      break;
399  }
400  return true;
401}
402
403// Adds |product|, installed in |product_dir| to this object's collection.  If
404// |product_dir| is NULL, the product's default install location is used.
405// Returns NULL if |product| is incompatible with this object.  Otherwise,
406// returns a pointer to the product (ownership is held by this object).
407Product* InstallerState::AddProductInDirectory(
408    const base::FilePath* product_dir,
409    scoped_ptr<Product>* product) {
410  DCHECK(product != NULL);
411  DCHECK(product->get() != NULL);
412  const Product& the_product = *product->get();
413
414  if (!CanAddProduct(the_product, product_dir))
415    return NULL;
416
417  if (package_type_ == UNKNOWN_PACKAGE_TYPE) {
418    set_package_type(the_product.HasOption(kOptionMultiInstall) ?
419                         MULTI_PACKAGE : SINGLE_PACKAGE);
420  }
421
422  if (target_path_.empty()) {
423    if (product_dir == NULL)
424      target_path_ = GetDefaultProductInstallPath(the_product.distribution());
425    else
426      target_path_ = *product_dir;
427  }
428
429  if (state_key_.empty())
430    state_key_ = the_product.distribution()->GetStateKey();
431
432  products_.push_back(product->release());
433  return products_[products_.size() - 1];
434}
435
436Product* InstallerState::AddProduct(scoped_ptr<Product>* product) {
437  return AddProductInDirectory(NULL, product);
438}
439
440// Adds a product of type |distribution_type| constructed on the basis of
441// |prefs|, setting this object's msi flag if the product is represented in
442// |machine_state| and is msi-installed.  Returns the product that was added,
443// or NULL if |state| is incompatible with this object.  Ownership is not passed
444// to the caller.
445Product* InstallerState::AddProductFromPreferences(
446    BrowserDistribution::Type distribution_type,
447    const MasterPreferences& prefs,
448    const InstallationState& machine_state) {
449  scoped_ptr<Product> product_ptr(
450      new Product(BrowserDistribution::GetSpecificDistribution(
451          distribution_type)));
452  product_ptr->InitializeFromPreferences(prefs);
453
454  Product* product = AddProductInDirectory(NULL, &product_ptr);
455
456  if (product != NULL && !msi_) {
457    const ProductState* product_state = machine_state.GetProductState(
458        system_install(), distribution_type);
459    if (product_state != NULL)
460      msi_ = product_state->is_msi();
461  }
462
463  return product;
464}
465
466Product* InstallerState::AddProductFromState(
467    BrowserDistribution::Type type,
468    const ProductState& state) {
469  scoped_ptr<Product> product_ptr(
470      new Product(BrowserDistribution::GetSpecificDistribution(type)));
471  product_ptr->InitializeFromUninstallCommand(state.uninstall_command());
472
473  // Strip off <version>/Installer/setup.exe; see GetInstallerDirectory().
474  base::FilePath product_dir =
475      state.GetSetupPath().DirName().DirName().DirName();
476
477  Product* product = AddProductInDirectory(&product_dir, &product_ptr);
478
479  if (product != NULL)
480    msi_ |= state.is_msi();
481
482  return product;
483}
484
485bool InstallerState::system_install() const {
486  DCHECK(level_ == USER_LEVEL || level_ == SYSTEM_LEVEL);
487  return level_ == SYSTEM_LEVEL;
488}
489
490bool InstallerState::is_multi_install() const {
491  DCHECK(package_type_ == SINGLE_PACKAGE || package_type_ == MULTI_PACKAGE);
492  return package_type_ != SINGLE_PACKAGE;
493}
494
495bool InstallerState::RemoveProduct(const Product* product) {
496  ScopedVector<Product>::iterator it =
497      std::find(products_.begin(), products_.end(), product);
498  if (it != products_.end()) {
499    products_.weak_erase(it);
500    return true;
501  }
502  return false;
503}
504
505const Product* InstallerState::FindProduct(
506    BrowserDistribution::Type distribution_type) const {
507  for (Products::const_iterator scan = products_.begin(), end = products_.end();
508       scan != end; ++scan) {
509     if ((*scan)->is_type(distribution_type))
510       return *scan;
511  }
512  return NULL;
513}
514
515Version* InstallerState::GetCurrentVersion(
516    const InstallationState& machine_state) const {
517  DCHECK(!products_.empty());
518  scoped_ptr<Version> current_version;
519  // If we're doing a multi-install, the current version may be either an
520  // existing multi or an existing single product that is being migrated
521  // in place (i.e., Chrome).  In the latter case, there is no existing
522  // CHROME_BINARIES installation so we need to search for the product.
523  BrowserDistribution::Type prod_type;
524  if (package_type_ == MULTI_PACKAGE) {
525    prod_type = BrowserDistribution::CHROME_BINARIES;
526    if (machine_state.GetProductState(level_ == SYSTEM_LEVEL,
527                                      prod_type) == NULL) {
528      // Search for a product on which we're operating that is installed in our
529      // target directory.
530      Products::const_iterator end = products().end();
531      for (Products::const_iterator scan = products().begin(); scan != end;
532           ++scan) {
533        BrowserDistribution::Type product_type =
534            (*scan)->distribution()->GetType();
535        const ProductState* state =
536            machine_state.GetProductState(level_ == SYSTEM_LEVEL, product_type);
537        if (state != NULL && target_path_.IsParent(state->GetSetupPath())) {
538          prod_type = product_type;
539          break;
540        }
541      }
542    }
543  } else {
544    prod_type = products_[0]->distribution()->GetType();
545  }
546  const ProductState* product_state =
547      machine_state.GetProductState(level_ == SYSTEM_LEVEL, prod_type);
548
549  if (product_state != NULL) {
550    const Version* version = NULL;
551
552    // Be aware that there might be a pending "new_chrome.exe" already in the
553    // installation path.  If so, we use old_version, which holds the version of
554    // "chrome.exe" itself.
555    if (file_util::PathExists(target_path().Append(kChromeNewExe)))
556      version = product_state->old_version();
557
558    if (version == NULL)
559      version = &product_state->version();
560
561    current_version.reset(new Version(*version));
562  }
563
564  return current_version.release();
565}
566
567Version InstallerState::DetermineCriticalVersion(
568    const Version* current_version,
569    const Version& new_version) const {
570  DCHECK(current_version == NULL || current_version->IsValid());
571  DCHECK(new_version.IsValid());
572  if (critical_update_version_.IsValid() &&
573      (current_version == NULL ||
574       (current_version->CompareTo(critical_update_version_) < 0)) &&
575      new_version.CompareTo(critical_update_version_) >= 0) {
576    return critical_update_version_;
577  }
578  return Version();
579}
580
581bool InstallerState::IsChromeFrameRunning(
582    const InstallationState& machine_state) const {
583  // We check only for the current version (e.g. the version we are upgrading
584  // _from_). We don't need to check interstitial versions if any (as would
585  // occur in the case of multiple updates) since if they are in use, we are
586  // guaranteed that the current version is in use too.
587  bool in_use = false;
588  scoped_ptr<Version> current_version(GetCurrentVersion(machine_state));
589  if (current_version != NULL) {
590    base::FilePath cf_install_path(
591        target_path().AppendASCII(current_version->GetString())
592                     .Append(kChromeFrameDll));
593    in_use = file_util::PathExists(cf_install_path) &&
594        IsFileInUse(cf_install_path);
595  }
596  return in_use;
597}
598
599base::FilePath InstallerState::GetInstallerDirectory(
600    const Version& version) const {
601  return target_path().Append(ASCIIToWide(version.GetString()))
602      .Append(kInstallerDir);
603}
604
605// static
606bool InstallerState::IsFileInUse(const base::FilePath& file) {
607  // Call CreateFile with a share mode of 0 which should cause this to fail
608  // with ERROR_SHARING_VIOLATION if the file exists and is in-use.
609  return !base::win::ScopedHandle(CreateFile(file.value().c_str(),
610                                             GENERIC_WRITE, 0, NULL,
611                                             OPEN_EXISTING, 0, 0)).IsValid();
612}
613
614void InstallerState::GetExistingExeVersions(
615    std::set<std::string>* existing_versions) const {
616
617  static const wchar_t* const kChromeFilenames[] = {
618    installer::kChromeExe,
619    installer::kChromeNewExe,
620    installer::kChromeOldExe,
621  };
622
623  for (int i = 0; i < arraysize(kChromeFilenames); ++i) {
624    base::FilePath chrome_exe(target_path().Append(kChromeFilenames[i]));
625    scoped_ptr<FileVersionInfo> file_version_info(
626        FileVersionInfo::CreateFileVersionInfo(chrome_exe));
627    if (file_version_info) {
628      string16 version_string = file_version_info->file_version();
629      if (!version_string.empty() && IsStringASCII(version_string))
630        existing_versions->insert(WideToASCII(version_string));
631    }
632  }
633}
634
635void InstallerState::RemoveOldVersionDirectories(
636    const Version& new_version,
637    Version* existing_version,
638    const base::FilePath& temp_path) const {
639  Version version;
640  std::vector<base::FilePath> key_files;
641  scoped_ptr<WorkItem> item;
642
643  std::set<std::string> existing_version_strings;
644  existing_version_strings.insert(new_version.GetString());
645  if (existing_version)
646    existing_version_strings.insert(existing_version->GetString());
647
648  // Make sure not to delete any version dir that is "referenced" by an existing
649  // Chrome executable.
650  GetExistingExeVersions(&existing_version_strings);
651
652  // Try to delete all directories that are not in the set we care to keep.
653  base::FileEnumerator version_enum(target_path(), false,
654                                    base::FileEnumerator::DIRECTORIES);
655  for (base::FilePath next_version = version_enum.Next(); !next_version.empty();
656       next_version = version_enum.Next()) {
657    base::FilePath dir_name(next_version.BaseName());
658    version = Version(WideToASCII(dir_name.value()));
659    // Delete the version folder if it is less than the new version and not
660    // equal to the old version (if we have an old version).
661    if (version.IsValid() &&
662        existing_version_strings.count(version.GetString()) == 0) {
663      // Note: temporarily log old version deletion at ERROR level to make it
664      // more likely we see this in the installer log.
665      LOG(ERROR) << "Deleting old version directory: " << next_version.value();
666
667      // Attempt to recursively delete the old version dir.
668      bool delete_succeeded = file_util::Delete(next_version, true);
669
670      // Note: temporarily log old version deletion at ERROR level to make it
671      // more likely we see this in the installer log.
672      LOG_IF(ERROR, !delete_succeeded)
673          << "Failed to delete old version directory: " << next_version.value();
674    }
675  }
676}
677
678void InstallerState::AddComDllList(
679    std::vector<base::FilePath>* com_dll_list) const {
680  std::for_each(products_.begin(), products_.end(),
681                std::bind2nd(std::mem_fun(&Product::AddComDllList),
682                             com_dll_list));
683}
684
685bool InstallerState::SetChannelFlags(bool set,
686                                     ChannelInfo* channel_info) const {
687  bool modified = false;
688  for (Products::const_iterator scan = products_.begin(), end = products_.end();
689       scan != end; ++scan) {
690     modified |= (*scan)->SetChannelFlags(set, channel_info);
691  }
692  return modified;
693}
694
695void InstallerState::UpdateStage(installer::InstallerStage stage) const {
696  InstallUtil::UpdateInstallerStage(system_install(), state_key_, stage);
697}
698
699void InstallerState::UpdateChannels() const {
700  if (operation_ != MULTI_INSTALL && operation_ != MULTI_UPDATE) {
701    VLOG(1) << "InstallerState::UpdateChannels noop: " << operation_;
702    return;
703  }
704
705  // Update the "ap" value for the product being installed/updated.  We get the
706  // current value from the registry since the InstallationState instance used
707  // by the bulk of the installer does not track changes made by UpdateStage.
708  // Create the app's ClientState key if it doesn't exist.
709  ChannelInfo channel_info;
710  base::win::RegKey state_key;
711  LONG result = state_key.Create(root_key_, state_key_.c_str(),
712                                 KEY_QUERY_VALUE | KEY_SET_VALUE);
713  if (result == ERROR_SUCCESS) {
714    channel_info.Initialize(state_key);
715
716    // This is a multi-install product.
717    bool modified = channel_info.SetMultiInstall(true);
718
719    // Add the appropriate modifiers for all products and their options.
720    modified |= SetChannelFlags(true, &channel_info);
721
722    VLOG(1) << "ap: " << channel_info.value();
723
724    // Write the results if needed.
725    if (modified)
726      channel_info.Write(&state_key);
727
728    // Remove the -stage: modifier since we don't want to propagate that to the
729    // other app_guids.
730    channel_info.SetStage(NULL);
731
732    // Synchronize the other products and the package with this one.
733    ChannelInfo other_info;
734    for (int i = 0; i < BrowserDistribution::NUM_TYPES; ++i) {
735      BrowserDistribution::Type type =
736          static_cast<BrowserDistribution::Type>(i);
737      // Skip the app_guid we started with.
738      if (type == state_type_)
739        continue;
740      BrowserDistribution* dist = NULL;
741      // Always operate on the binaries.
742      if (i == BrowserDistribution::CHROME_BINARIES) {
743        dist = multi_package_distribution_;
744      } else {
745        const Product* product = FindProduct(type);
746        // Skip this one if it's for a product we're not operating on.
747        if (product == NULL)
748          continue;
749        dist = product->distribution();
750      }
751      result = state_key.Create(root_key_, dist->GetStateKey().c_str(),
752                                KEY_QUERY_VALUE | KEY_SET_VALUE);
753      if (result == ERROR_SUCCESS) {
754        other_info.Initialize(state_key);
755        if (!other_info.Equals(channel_info))
756          channel_info.Write(&state_key);
757      } else {
758        LOG(ERROR) << "Failed opening key " << dist->GetStateKey()
759                   << " to update app channels; result: " << result;
760      }
761    }
762  } else {
763    LOG(ERROR) << "Failed opening key " << state_key_
764               << " to update app channels; result: " << result;
765  }
766}
767
768void InstallerState::WriteInstallerResult(
769    InstallStatus status,
770    int string_resource_id,
771    const std::wstring* const launch_cmd) const {
772  DWORD installer_result =
773      (InstallUtil::GetInstallReturnCode(status) == 0) ? 0 : 1;
774  // Use a no-rollback list since this is a best-effort deal.
775  scoped_ptr<WorkItemList> install_list(
776      WorkItem::CreateNoRollbackWorkItemList());
777  const bool system_install = this->system_install();
778  // Write the value for all products upon which we're operating.
779  Products::const_iterator end = products().end();
780  for (Products::const_iterator scan = products().begin(); scan != end;
781       ++scan) {
782    InstallUtil::AddInstallerResultItems(
783        system_install, (*scan)->distribution()->GetStateKey(), status,
784        string_resource_id, launch_cmd, install_list.get());
785  }
786  // And for the binaries if this is a multi-install.
787  if (is_multi_install()) {
788    InstallUtil::AddInstallerResultItems(
789        system_install, multi_package_binaries_distribution()->GetStateKey(),
790        status, string_resource_id, launch_cmd, install_list.get());
791  }
792  if (!install_list->Do())
793    LOG(ERROR) << "Failed to record installer error information in registry.";
794}
795
796bool InstallerState::RequiresActiveSetup() const {
797  return system_install() && FindProduct(BrowserDistribution::CHROME_BROWSER);
798}
799
800}  // namespace installer
801