chrome/installer/util/installation_validator.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 // Implementation of the installation validator.
   6
   7 #include "chrome/installer/util/installation_validator.h"
   8
   9 #include <algorithm>
  10 #include <set>
  11 #include <string>
  12
  13 #include "base/logging.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/version.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "chrome/installer/util/browser_distribution.h"
  18 #include "chrome/installer/util/google_update_constants.h"
  19 #include "chrome/installer/util/helper.h"
  20 #include "chrome/installer/util/installation_state.h"
  21
  22 namespace installer {
  23
  24 BrowserDistribution::Type
  25     InstallationValidator::ChromeRules::distribution_type() const {
  26   return BrowserDistribution::CHROME_BROWSER;
  27 }
  28
  29 void InstallationValidator::ChromeRules::AddUninstallSwitchExpectations(
  30     const ProductContext& ctx,
  31     SwitchExpectations* expectations) const {
  32   const bool is_multi_install =
  33       ctx.state.uninstall_command().HasSwitch(switches::kMultiInstall);
  34
  35   // --chrome should be present for uninstall iff --multi-install.  This wasn't
  36   // the case in Chrome 10 (between r68996 and r72497), though, so consider it
  37   // optional.
  38
  39   // --chrome-frame --ready-mode should be present for uninstall iff CF in ready
  40   // mode.
  41   const ProductState* cf_state =
  42       ctx.machine_state.GetProductState(ctx.system_install,
  43                                         BrowserDistribution::CHROME_FRAME);
  44   const bool ready_mode =
  45       cf_state != NULL &&
  46       cf_state->uninstall_command().HasSwitch(switches::kChromeFrameReadyMode);
  47   expectations->push_back(std::make_pair(std::string(switches::kChromeFrame),
  48                                          ready_mode));
  49   expectations->push_back(
  50       std::make_pair(std::string(switches::kChromeFrameReadyMode), ready_mode));
  51 }
  52
  53 void InstallationValidator::ChromeRules::AddRenameSwitchExpectations(
  54     const ProductContext& ctx,
  55     SwitchExpectations* expectations) const {
  56   const bool is_multi_install =
  57       ctx.state.uninstall_command().HasSwitch(switches::kMultiInstall);
  58
  59   // --chrome should not be present for rename.  It was for a time, so we'll be
  60   // lenient so that mini_installer tests pass.
  61
  62   // --chrome-frame --ready-mode should never be present.
  63   expectations->push_back(
  64       std::make_pair(std::string(switches::kChromeFrame), false));
  65   expectations->push_back(
  66       std::make_pair(std::string(switches::kChromeFrameReadyMode), false));
  67 }
  68
  69 bool InstallationValidator::ChromeRules::UsageStatsAllowed(
  70     const ProductContext& ctx) const {
  71   // Products must not have usagestats consent values when multi-install
  72   // (only the multi-install binaries may).
  73   return !ctx.state.is_multi_install();
  74 }
  75
  76 BrowserDistribution::Type
  77     InstallationValidator::ChromeFrameRules::distribution_type() const {
  78   return BrowserDistribution::CHROME_FRAME;
  79 }
  80
  81 void InstallationValidator::ChromeFrameRules::AddUninstallSwitchExpectations(
  82     const ProductContext& ctx,
  83     SwitchExpectations* expectations) const {
  84   // --chrome-frame must be present.
  85   expectations->push_back(std::make_pair(std::string(switches::kChromeFrame),
  86                                          true));
  87   // --chrome must not be present.
  88   expectations->push_back(std::make_pair(std::string(switches::kChrome),
  89                                          false));
  90 }
  91
  92 void InstallationValidator::ChromeFrameRules::AddRenameSwitchExpectations(
  93     const ProductContext& ctx,
  94     SwitchExpectations* expectations) const {
  95   // --chrome-frame must be present for SxS rename.
  96   expectations->push_back(std::make_pair(std::string(switches::kChromeFrame),
  97                                          !ctx.state.is_multi_install()));
  98   // --chrome must not be present.
  99   expectations->push_back(std::make_pair(std::string(switches::kChrome),
 100                                          false));
 101 }
 102
 103 bool InstallationValidator::ChromeFrameRules::UsageStatsAllowed(
 104     const ProductContext& ctx) const {
 105   // Products must not have usagestats consent values when multi-install
 106   // (only the multi-install binaries may).
 107   return !ctx.state.is_multi_install();
 108 }
 109
 110 BrowserDistribution::Type
 111     InstallationValidator::ChromeAppHostRules::distribution_type() const {
 112   return BrowserDistribution::CHROME_APP_HOST;
 113 }
 114
 115 void InstallationValidator::ChromeAppHostRules::AddUninstallSwitchExpectations(
 116     const ProductContext& ctx,
 117     SwitchExpectations* expectations) const {
 118   // --app-launcher must be present.
 119   expectations->push_back(
 120       std::make_pair(std::string(switches::kChromeAppLauncher), true));
 121
 122   // --chrome must not be present.
 123   expectations->push_back(std::make_pair(std::string(switches::kChrome),
 124                                          false));
 125   // --chrome-frame must not be present.
 126   expectations->push_back(std::make_pair(std::string(switches::kChromeFrame),
 127                                          false));
 128 }
 129
 130 void InstallationValidator::ChromeAppHostRules::AddRenameSwitchExpectations(
 131     const ProductContext& ctx,
 132     SwitchExpectations* expectations) const {
 133   // TODO(erikwright): I guess there will be none?
 134 }
 135
 136 bool InstallationValidator::ChromeAppHostRules::UsageStatsAllowed(
 137     const ProductContext& ctx) const {
 138   // App Host doesn't manage usage stats. The Chrome Binaries will.
 139   return false;
 140 }
 141
 142 BrowserDistribution::Type
 143     InstallationValidator::ChromeBinariesRules::distribution_type() const {
 144   return BrowserDistribution::CHROME_BINARIES;
 145 }
 146
 147 void InstallationValidator::ChromeBinariesRules::AddUninstallSwitchExpectations(
 148     const ProductContext& ctx,
 149     SwitchExpectations* expectations) const {
 150   NOTREACHED();
 151 }
 152
 153 void InstallationValidator::ChromeBinariesRules::AddRenameSwitchExpectations(
 154     const ProductContext& ctx,
 155     SwitchExpectations* expectations) const {
 156   NOTREACHED();
 157 }
 158
 159 bool InstallationValidator::ChromeBinariesRules::UsageStatsAllowed(
 160     const ProductContext& ctx) const {
 161   // UsageStats consent values are always allowed on the binaries.
 162   return true;
 163 }
 164
 165 // static
 166 const InstallationValidator::InstallationType
 167     InstallationValidator::kInstallationTypes[] = {
 168   NO_PRODUCTS,
 169   CHROME_SINGLE,
 170   CHROME_MULTI,
 171   CHROME_FRAME_SINGLE,
 172   CHROME_FRAME_SINGLE_CHROME_SINGLE,
 173   CHROME_FRAME_SINGLE_CHROME_MULTI,
 174   CHROME_FRAME_MULTI,
 175   CHROME_FRAME_MULTI_CHROME_MULTI,
 176   CHROME_FRAME_READY_MODE_CHROME_MULTI,
 177   CHROME_APP_HOST,
 178   CHROME_APP_HOST_CHROME_FRAME_SINGLE,
 179   CHROME_APP_HOST_CHROME_FRAME_SINGLE_CHROME_MULTI,
 180   CHROME_APP_HOST_CHROME_FRAME_MULTI,
 181   CHROME_APP_HOST_CHROME_FRAME_MULTI_CHROME_MULTI,
 182   CHROME_APP_HOST_CHROME_MULTI,
 183   CHROME_APP_HOST_CHROME_MULTI_CHROME_FRAME_READY_MODE,
 184 };
 185
 186 void InstallationValidator::ValidateAppCommandFlags(
 187     const ProductContext& ctx,
 188     const AppCommand& app_cmd,
 189     const std::set<string16>& flags_exp,
 190     const string16& name,
 191     bool* is_valid) {
 192   const struct {
 193     const string16 exp_key;
 194     bool val;
 195     const char* msg;
 196   } check_list[] = {
 197     {google_update::kRegSendsPingsField,
 198          app_cmd.sends_pings(),
 199          "be configured to send pings"},
 200     {google_update::kRegWebAccessibleField,
 201          app_cmd.is_web_accessible(),
 202          "be web accessible"},
 203     {google_update::kRegAutoRunOnOSUpgradeField,
 204          app_cmd.is_auto_run_on_os_upgrade(),
 205          "be marked to run on OS upgrade"},
 206     {google_update::kRegRunAsUserField,
 207          app_cmd.is_run_as_user(),
 208          "be marked to run as user"},
 209   };
 210   for (int i = 0; i < arraysize(check_list); ++i) {
 211     bool expected = flags_exp.find(check_list[i].exp_key) != flags_exp.end();
 212     if (check_list[i].val != expected) {
 213       *is_valid = false;
 214       LOG(ERROR) << ctx.dist->GetAppShortCutName() << ": "
 215                  << name << " command should " << (expected ? "" : "not ")
 216                  << check_list[i].msg << ".";
 217     }
 218   }
 219 }
 220
 221 // Validates both "install-application" and "install-extension" depending on
 222 // what is passed in.
 223 void InstallationValidator::ValidateInstallCommand(
 224     const ProductContext& ctx,
 225     const AppCommand& app_cmd,
 226     const wchar_t* expected_command,
 227     const wchar_t* expected_app_name,
 228     const char* expected_switch,
 229     bool* is_valid) {
 230   DCHECK(is_valid);
 231
 232   CommandLine cmd_line(CommandLine::FromString(app_cmd.command_line()));
 233   string16 name(expected_command);
 234
 235   base::FilePath expected_path(
 236       installer::GetChromeInstallPath(ctx.system_install, ctx.dist)
 237       .Append(expected_app_name));
 238
 239   if (!base::FilePath::CompareEqualIgnoreCase(expected_path.value(),
 240                                               cmd_line.GetProgram().value())) {
 241     *is_valid = false;
 242     LOG(ERROR) << name << "'s path is not "
 243                << expected_path.value() << ": "
 244                << cmd_line.GetProgram().value();
 245   }
 246
 247   SwitchExpectations expected;
 248   expected.push_back(std::make_pair(std::string(expected_switch), true));
 249
 250   ValidateCommandExpectations(ctx, cmd_line, expected, name, is_valid);
 251
 252   std::set<string16> flags_exp;
 253   flags_exp.insert(google_update::kRegSendsPingsField);
 254   flags_exp.insert(google_update::kRegWebAccessibleField);
 255   flags_exp.insert(google_update::kRegRunAsUserField);
 256   ValidateAppCommandFlags(ctx, app_cmd, flags_exp, name, is_valid);
 257 }
 258
 259 // Validates the "install-application" Google Update product command.
 260 void InstallationValidator::ValidateInstallAppCommand(
 261     const ProductContext& ctx,
 262     const AppCommand& app_cmd,
 263     bool* is_valid) {
 264   ValidateInstallCommand(ctx, app_cmd, kCmdInstallApp,
 265                          installer::kChromeAppHostExe,
 266                          ::switches::kInstallFromWebstore, is_valid);
 267 }
 268
 269 // Validates the "install-extension" Google Update product command.
 270 void InstallationValidator::ValidateInstallExtensionCommand(
 271     const ProductContext& ctx,
 272     const AppCommand& app_cmd,
 273     bool* is_valid) {
 274   ValidateInstallCommand(ctx, app_cmd, kCmdInstallExtension,
 275                          installer::kChromeExe,
 276                          ::switches::kLimitedInstallFromWebstore, is_valid);
 277 }
 278
 279 // Validates the "on-os-upgrade" Google Update internal command.
 280 void InstallationValidator::ValidateOnOsUpgradeCommand(
 281     const ProductContext& ctx,
 282     const AppCommand& app_cmd,
 283     bool* is_valid) {
 284   DCHECK(is_valid);
 285
 286   CommandLine cmd_line(CommandLine::FromString(app_cmd.command_line()));
 287   string16 name(kCmdOnOsUpgrade);
 288
 289   ValidateSetupPath(ctx, cmd_line.GetProgram(), name, is_valid);
 290
 291   SwitchExpectations expected;
 292   expected.push_back(std::make_pair(std::string(switches::kOnOsUpgrade), true));
 293   expected.push_back(std::make_pair(std::string(switches::kSystemLevel),
 294                                     ctx.system_install));
 295   expected.push_back(std::make_pair(std::string(switches::kMultiInstall),
 296                                     ctx.state.is_multi_install()));
 297   // Expecting kChrome if and only if kMultiInstall.
 298   expected.push_back(std::make_pair(std::string(switches::kChrome),
 299                                     ctx.state.is_multi_install()));
 300
 301   ValidateCommandExpectations(ctx, cmd_line, expected, name, is_valid);
 302
 303   std::set<string16> flags_exp;
 304   flags_exp.insert(google_update::kRegAutoRunOnOSUpgradeField);
 305   ValidateAppCommandFlags(ctx, app_cmd, flags_exp, name, is_valid);
 306 }
 307
 308 // Validates the "query-eula-acceptance" Google Update product command.
 309 void InstallationValidator::ValidateQueryEULAAcceptanceCommand(
 310     const ProductContext& ctx,
 311     const AppCommand& app_cmd,
 312     bool* is_valid) {
 313   DCHECK(is_valid);
 314
 315   CommandLine cmd_line(CommandLine::FromString(app_cmd.command_line()));
 316   string16 name(kCmdQueryEULAAcceptance);
 317
 318   ValidateSetupPath(ctx, cmd_line.GetProgram(), name, is_valid);
 319
 320   SwitchExpectations expected;
 321   expected.push_back(std::make_pair(std::string(switches::kQueryEULAAcceptance),
 322                                     true));
 323   expected.push_back(std::make_pair(std::string(switches::kSystemLevel),
 324                                     ctx.system_install));
 325
 326   ValidateCommandExpectations(ctx, cmd_line, expected, name, is_valid);
 327
 328   std::set<string16> flags_exp;
 329   flags_exp.insert(google_update::kRegWebAccessibleField);
 330   flags_exp.insert(google_update::kRegRunAsUserField);
 331   ValidateAppCommandFlags(ctx, app_cmd, flags_exp, name, is_valid);
 332 }
 333
 334 // Validates the "quick-enable-cf" Google Update product command.
 335 void InstallationValidator::ValidateQuickEnableCfCommand(
 336     const ProductContext& ctx,
 337     const AppCommand& app_cmd,
 338     bool* is_valid) {
 339   DCHECK(is_valid);
 340
 341   CommandLine cmd_line(CommandLine::FromString(app_cmd.command_line()));
 342   string16 name(kCmdQuickEnableCf);
 343
 344   ValidateSetupPath(ctx, cmd_line.GetProgram(), name, is_valid);
 345
 346   SwitchExpectations expected;
 347
 348   expected.push_back(
 349       std::make_pair(std::string(switches::kChromeFrameQuickEnable), true));
 350   expected.push_back(std::make_pair(std::string(switches::kSystemLevel),
 351                                     ctx.system_install));
 352   expected.push_back(std::make_pair(std::string(switches::kMultiInstall),
 353                                     ctx.state.is_multi_install()));
 354
 355   ValidateCommandExpectations(ctx, cmd_line, expected, name, is_valid);
 356
 357   std::set<string16> flags_exp;
 358   flags_exp.insert(google_update::kRegSendsPingsField);
 359   flags_exp.insert(google_update::kRegWebAccessibleField);
 360   ValidateAppCommandFlags(ctx, app_cmd, flags_exp, name, is_valid);
 361 }
 362
 363 // Validates the "quick-enable-application-host" Google Update product command.
 364 void InstallationValidator::ValidateQuickEnableApplicationHostCommand(
 365     const ProductContext& ctx,
 366     const AppCommand& app_cmd,
 367     bool* is_valid) {
 368   DCHECK(is_valid);
 369
 370   CommandLine cmd_line(CommandLine::FromString(app_cmd.command_line()));
 371   string16 name(kCmdQuickEnableApplicationHost);
 372
 373   ValidateSetupPath(ctx, cmd_line.GetProgram(), name, is_valid);
 374
 375   SwitchExpectations expected;
 376
 377   expected.push_back(std::make_pair(
 378       std::string(switches::kChromeAppLauncher), true));
 379   expected.push_back(std::make_pair(
 380       std::string(switches::kSystemLevel), false));
 381   expected.push_back(std::make_pair(
 382       std::string(switches::kMultiInstall), true));
 383   expected.push_back(std::make_pair(
 384       std::string(switches::kEnsureGoogleUpdatePresent), true));
 385
 386   ValidateCommandExpectations(ctx, cmd_line, expected, name, is_valid);
 387
 388   std::set<string16> flags_exp;
 389   flags_exp.insert(google_update::kRegSendsPingsField);
 390   flags_exp.insert(google_update::kRegWebAccessibleField);
 391   flags_exp.insert(google_update::kRegRunAsUserField);
 392   ValidateAppCommandFlags(ctx, app_cmd, flags_exp, name, is_valid);
 393 }
 394
 395 // Validates a product's set of Google Update product commands against a
 396 // collection of expectations.
 397 void InstallationValidator::ValidateAppCommandExpectations(
 398     const ProductContext& ctx,
 399     const CommandExpectations& expectations,
 400     bool* is_valid) {
 401   DCHECK(is_valid);
 402
 403   CommandExpectations the_expectations(expectations);
 404
 405   AppCommands::CommandMapRange cmd_iterators(
 406       ctx.state.commands().GetIterators());
 407   CommandExpectations::iterator expectation;
 408   for (; cmd_iterators.first != cmd_iterators.second; ++cmd_iterators.first) {
 409     const string16& cmd_id = cmd_iterators.first->first;
 410     // Do we have an expectation for this command?
 411     expectation = the_expectations.find(cmd_id);
 412     if (expectation != the_expectations.end()) {
 413       (expectation->second)(ctx, cmd_iterators.first->second, is_valid);
 414       // Remove this command from the set of expectations since we found it.
 415       the_expectations.erase(expectation);
 416     } else {
 417       *is_valid = false;
 418       LOG(ERROR) << ctx.dist->GetAppShortCutName()
 419                  << " has an unexpected Google Update product command named \""
 420                  << cmd_id << "\".";
 421     }
 422   }
 423
 424   // Report on any expected commands that weren't present.
 425   CommandExpectations::const_iterator scan(the_expectations.begin());
 426   CommandExpectations::const_iterator end(the_expectations.end());
 427   for (; scan != end; ++scan) {
 428     *is_valid = false;
 429     LOG(ERROR) << ctx.dist->GetAppShortCutName()
 430                << " is missing the Google Update product command named \""
 431                << scan->first << "\".";
 432   }
 433 }
 434
 435 // Validates the multi-install binaries' Google Update commands.
 436 void InstallationValidator::ValidateBinariesCommands(
 437     const ProductContext& ctx,
 438     bool* is_valid) {
 439   DCHECK(is_valid);
 440
 441   // The quick-enable-cf command must be present if Chrome Binaries are
 442   // installed and Chrome Frame is not installed (or installed in ready mode).
 443   const ChannelInfo& channel = ctx.state.channel();
 444   const ProductState* binaries_state = ctx.machine_state.GetProductState(
 445       ctx.system_install, BrowserDistribution::CHROME_BINARIES);
 446   const ProductState* cf_state = ctx.machine_state.GetProductState(
 447       ctx.system_install, BrowserDistribution::CHROME_FRAME);
 448
 449   CommandExpectations expectations;
 450
 451   if (binaries_state != NULL) {
 452     if (cf_state == NULL || channel.IsReadyMode())
 453       expectations[kCmdQuickEnableCf] = &ValidateQuickEnableCfCommand;
 454
 455     expectations[kCmdQuickEnableApplicationHost] =
 456         &ValidateQuickEnableApplicationHostCommand;
 457
 458     expectations[kCmdQueryEULAAcceptance] = &ValidateQueryEULAAcceptanceCommand;
 459   }
 460
 461   ValidateAppCommandExpectations(ctx, expectations, is_valid);
 462 }
 463
 464 // Validates the multi-install binaries at level |system_level|.
 465 void InstallationValidator::ValidateBinaries(
 466     const InstallationState& machine_state,
 467     bool system_install,
 468     const ProductState& binaries_state,
 469     bool* is_valid) {
 470   const ChannelInfo& channel = binaries_state.channel();
 471
 472   // ap must have -multi
 473   if (!channel.IsMultiInstall()) {
 474     *is_valid = false;
 475     LOG(ERROR) << "Chrome Binaries are missing \"-multi\" in channel name: \""
 476                << channel.value() << "\"";
 477   }
 478
 479   // ap must have -chrome iff Chrome is installed
 480   const ProductState* chrome_state = machine_state.GetProductState(
 481       system_install, BrowserDistribution::CHROME_BROWSER);
 482   if (chrome_state != NULL) {
 483     if (!channel.IsChrome()) {
 484       *is_valid = false;
 485       LOG(ERROR) << "Chrome Binaries are missing \"chrome\" in channel name:"
 486                  << " \"" << channel.value() << "\"";
 487     }
 488   } else if (channel.IsChrome()) {
 489     *is_valid = false;
 490     LOG(ERROR) << "Chrome Binaries have \"-chrome\" in channel name, yet Chrome"
 491                   " is not installed: \"" << channel.value() << "\"";
 492   }
 493
 494   // ap must have -chromeframe iff Chrome Frame is installed multi
 495   const ProductState* cf_state = machine_state.GetProductState(
 496       system_install, BrowserDistribution::CHROME_FRAME);
 497   if (cf_state != NULL && cf_state->is_multi_install()) {
 498     if (!channel.IsChromeFrame()) {
 499       *is_valid = false;
 500       LOG(ERROR) << "Chrome Binaries are missing \"-chromeframe\" in channel"
 501                     " name: \"" << channel.value() << "\"";
 502     }
 503   } else if (channel.IsChromeFrame()) {
 504     *is_valid = false;
 505     LOG(ERROR) << "Chrome Binaries have \"-chromeframe\" in channel name, yet "
 506                   "Chrome Frame is not installed multi: \"" << channel.value()
 507                << "\"";
 508   }
 509
 510   // ap must have -readymode iff Chrome Frame is installed in ready-mode
 511   if (cf_state != NULL &&
 512       cf_state->uninstall_command().HasSwitch(
 513           installer::switches::kChromeFrameReadyMode)) {
 514     if (!channel.IsReadyMode()) {
 515       *is_valid = false;
 516       LOG(ERROR) << "Chrome Binaries are missing \"-readymode\" in channel"
 517                     " name: \"" << channel.value() << "\"";
 518     }
 519   } else if (channel.IsReadyMode()) {
 520     *is_valid = false;
 521     LOG(ERROR) << "Chrome Binaries have \"-readymode\" in channel name, yet "
 522                   "Chrome Frame is not in ready mode: \"" << channel.value()
 523                << "\"";
 524   }
 525
 526   // ap must have -applauncher iff Chrome App Launcher is installed multi
 527   const ProductState* app_host_state = machine_state.GetProductState(
 528       system_install, BrowserDistribution::CHROME_APP_HOST);
 529   if (app_host_state != NULL) {
 530     if (!app_host_state->is_multi_install()) {
 531       *is_valid = false;
 532       LOG(ERROR) << "Chrome App Launcher is installed in non-multi mode.";
 533     }
 534     if (!channel.IsAppLauncher()) {
 535       *is_valid = false;
 536       LOG(ERROR) << "Chrome Binaries are missing \"-applauncher\" in channel"
 537                     " name: \"" << channel.value() << "\"";
 538     }
 539   } else if (channel.IsAppLauncher()) {
 540     *is_valid = false;
 541     LOG(ERROR) << "Chrome Binaries have \"-applauncher\" in channel name, yet "
 542                   "Chrome App Launcher is not installed: \"" << channel.value()
 543                << "\"";
 544   }
 545
 546   // Chrome, Chrome Frame, or App Host must be present
 547   if (chrome_state == NULL && cf_state == NULL && app_host_state == NULL) {
 548     *is_valid = false;
 549     LOG(ERROR) << "Chrome Binaries are present with no other products.";
 550   }
 551
 552   // Chrome must be multi-install if present.
 553   if (chrome_state != NULL && !chrome_state->is_multi_install()) {
 554     *is_valid = false;
 555     LOG(ERROR)
 556         << "Chrome Binaries are present yet Chrome is not multi-install.";
 557   }
 558
 559   // Chrome Frame must be multi-install if Chrome & App Host are not present.
 560   if (cf_state != NULL && app_host_state == NULL && chrome_state == NULL &&
 561       !cf_state->is_multi_install()) {
 562     *is_valid = false;
 563     LOG(ERROR) << "Chrome Binaries are present without Chrome nor App Launcher "
 564                << "yet Chrome Frame is not multi-install.";
 565   }
 566
 567   ChromeBinariesRules binaries_rules;
 568   ProductContext ctx(machine_state, system_install, binaries_state,
 569                      binaries_rules);
 570
 571   ValidateBinariesCommands(ctx, is_valid);
 572
 573   ValidateUsageStats(ctx, is_valid);
 574 }
 575
 576 // Validates the path to |setup_exe| for the product described by |ctx|.
 577 void InstallationValidator::ValidateSetupPath(const ProductContext& ctx,
 578                                               const base::FilePath& setup_exe,
 579                                               const string16& purpose,
 580                                               bool* is_valid) {
 581   DCHECK(is_valid);
 582
 583   BrowserDistribution* bins_dist = ctx.dist;
 584   if (ctx.state.is_multi_install()) {
 585     bins_dist = BrowserDistribution::GetSpecificDistribution(
 586         BrowserDistribution::CHROME_BINARIES);
 587   }
 588
 589   base::FilePath expected_path = installer::GetChromeInstallPath(
 590       ctx.system_install, bins_dist);
 591   expected_path = expected_path
 592       .AppendASCII(ctx.state.version().GetString())
 593       .Append(installer::kInstallerDir)
 594       .Append(installer::kSetupExe);
 595   if (!base::FilePath::CompareEqualIgnoreCase(expected_path.value(),
 596                                               setup_exe.value())) {
 597     *is_valid = false;
 598     LOG(ERROR) << ctx.dist->GetAppShortCutName() << " path to " << purpose
 599                << " is not " << expected_path.value() << ": "
 600                << setup_exe.value();
 601   }
 602 }
 603
 604 // Validates that |command| meets the expectations described in |expected|.
 605 void InstallationValidator::ValidateCommandExpectations(
 606     const ProductContext& ctx,
 607     const CommandLine& command,
 608     const SwitchExpectations& expected,
 609     const string16& source,
 610     bool* is_valid) {
 611   for (SwitchExpectations::size_type i = 0, size = expected.size(); i < size;
 612        ++i) {
 613     const SwitchExpectations::value_type& expectation = expected[i];
 614     if (command.HasSwitch(expectation.first) != expectation.second) {
 615       *is_valid = false;
 616       LOG(ERROR) << ctx.dist->GetAppShortCutName() << " " << source
 617                  << (expectation.second ? " is missing" : " has") << " \""
 618                  << expectation.first << "\""
 619                  << (expectation.second ? "" : " but shouldn't") << ": "
 620                  << command.GetCommandLineString();
 621     }
 622   }
 623 }
 624
 625 // Validates that |command|, originating from |source|, is formed properly for
 626 // the product described by |ctx|
 627 void InstallationValidator::ValidateUninstallCommand(const ProductContext& ctx,
 628                                                      const CommandLine& command,
 629                                                      const string16& source,
 630                                                      bool* is_valid) {
 631   DCHECK(is_valid);
 632
 633   ValidateSetupPath(ctx, command.GetProgram(), ASCIIToUTF16("uninstaller"),
 634                     is_valid);
 635
 636   const bool is_multi_install = ctx.state.is_multi_install();
 637   SwitchExpectations expected;
 638
 639   expected.push_back(std::make_pair(std::string(switches::kUninstall), true));
 640   expected.push_back(std::make_pair(std::string(switches::kSystemLevel),
 641                                     ctx.system_install));
 642   expected.push_back(std::make_pair(std::string(switches::kMultiInstall),
 643                                     is_multi_install));
 644   ctx.rules.AddUninstallSwitchExpectations(ctx, &expected);
 645
 646   ValidateCommandExpectations(ctx, command, expected, source, is_valid);
 647 }
 648
 649 // Validates the rename command for the product described by |ctx|.
 650 void InstallationValidator::ValidateRenameCommand(const ProductContext& ctx,
 651                                                   bool* is_valid) {
 652   DCHECK(is_valid);
 653   DCHECK(!ctx.state.rename_cmd().empty());
 654
 655   CommandLine command = CommandLine::FromString(ctx.state.rename_cmd());
 656   string16 name(ASCIIToUTF16("in-use renamer"));
 657
 658   ValidateSetupPath(ctx, command.GetProgram(), name, is_valid);
 659
 660   SwitchExpectations expected;
 661
 662   expected.push_back(std::make_pair(std::string(switches::kRenameChromeExe),
 663                                     true));
 664   expected.push_back(std::make_pair(std::string(switches::kSystemLevel),
 665                                     ctx.system_install));
 666   expected.push_back(std::make_pair(std::string(switches::kMultiInstall),
 667                                     ctx.state.is_multi_install()));
 668   ctx.rules.AddRenameSwitchExpectations(ctx, &expected);
 669
 670   ValidateCommandExpectations(ctx, command, expected, name, is_valid);
 671 }
 672
 673 // Validates the "opv" and "cmd" values for the product described in |ctx|.
 674 void InstallationValidator::ValidateOldVersionValues(
 675     const ProductContext& ctx,
 676     bool* is_valid) {
 677   DCHECK(is_valid);
 678
 679   // opv and cmd must both be present or both absent
 680   if (ctx.state.old_version() == NULL) {
 681     if (!ctx.state.rename_cmd().empty()) {
 682       *is_valid = false;
 683       LOG(ERROR) << ctx.dist->GetAppShortCutName()
 684                  << " has a rename command but no opv: "
 685                  << ctx.state.rename_cmd();
 686     }
 687   } else {
 688     if (ctx.state.rename_cmd().empty()) {
 689       *is_valid = false;
 690       LOG(ERROR) << ctx.dist->GetAppShortCutName()
 691                  << " has an opv but no rename command: "
 692                  << ctx.state.old_version()->GetString();
 693     } else {
 694       ValidateRenameCommand(ctx, is_valid);
 695     }
 696   }
 697 }
 698
 699 // Validates the multi-install state of the product described in |ctx|.
 700 void InstallationValidator::ValidateMultiInstallProduct(
 701     const ProductContext& ctx,
 702     bool* is_valid) {
 703   DCHECK(is_valid);
 704
 705   const ProductState* binaries =
 706       ctx.machine_state.GetProductState(ctx.system_install,
 707                                         BrowserDistribution::CHROME_BINARIES);
 708   if (!binaries) {
 709     if (ctx.dist->GetType() == BrowserDistribution::CHROME_APP_HOST) {
 710       if (!ctx.machine_state.GetProductState(
 711               true,  // system-level
 712               BrowserDistribution::CHROME_BINARIES) &&
 713           !ctx.machine_state.GetProductState(
 714               true,  // system-level
 715               BrowserDistribution::CHROME_BROWSER)) {
 716         *is_valid = false;
 717         LOG(ERROR) << ctx.dist->GetAppShortCutName()
 718                    << " (" << ctx.state.version().GetString() << ") is "
 719                    << "installed without Chrome Binaries or a system-level "
 720                    << "Chrome.";
 721       }
 722     } else {
 723       *is_valid = false;
 724       LOG(ERROR) << ctx.dist->GetAppShortCutName()
 725                  << " (" << ctx.state.version().GetString() << ") is installed "
 726                  << "without Chrome Binaries.";
 727     }
 728   } else {
 729     // Version must match that of binaries.
 730     if (ctx.state.version().CompareTo(binaries->version()) != 0) {
 731       *is_valid = false;
 732       LOG(ERROR) << "Version of " << ctx.dist->GetAppShortCutName()
 733                  << " (" << ctx.state.version().GetString() << ") does not "
 734                     "match that of Chrome Binaries ("
 735                  << binaries->version().GetString() << ").";
 736     }
 737
 738     // Channel value must match that of binaries.
 739     if (!ctx.state.channel().Equals(binaries->channel())) {
 740       *is_valid = false;
 741       LOG(ERROR) << "Channel name of " << ctx.dist->GetAppShortCutName()
 742                  << " (" << ctx.state.channel().value()
 743                  << ") does not match that of Chrome Binaries ("
 744                  << binaries->channel().value() << ").";
 745     }
 746   }
 747 }
 748
 749 // Validates the Google Update commands for the product described in |ctx|.
 750 void InstallationValidator::ValidateAppCommands(
 751     const ProductContext& ctx,
 752     bool* is_valid) {
 753   DCHECK(is_valid);
 754
 755   CommandExpectations expectations;
 756
 757   if (ctx.dist->GetType() == BrowserDistribution::CHROME_APP_HOST) {
 758     expectations[kCmdInstallApp] = &ValidateInstallAppCommand;
 759   }
 760   if (ctx.dist->GetType() == BrowserDistribution::CHROME_BROWSER) {
 761     expectations[kCmdInstallExtension] = &ValidateInstallExtensionCommand;
 762     expectations[kCmdOnOsUpgrade] = &ValidateOnOsUpgradeCommand;
 763   }
 764
 765   ValidateAppCommandExpectations(ctx, expectations, is_valid);
 766 }
 767
 768 // Validates usagestats for the product or binaries in |ctx|.
 769 void InstallationValidator::ValidateUsageStats(const ProductContext& ctx,
 770                                                bool* is_valid) {
 771   DWORD usagestats = 0;
 772   if (ctx.state.GetUsageStats(&usagestats)) {
 773     if (!ctx.rules.UsageStatsAllowed(ctx)) {
 774       *is_valid = false;
 775       LOG(ERROR) << ctx.dist->GetAppShortCutName()
 776                  << " has a usagestats value (" << usagestats
 777                  << "), yet should not.";
 778     } else if (usagestats != 0 && usagestats != 1) {
 779       *is_valid = false;
 780       LOG(ERROR) << ctx.dist->GetAppShortCutName()
 781                  << " has an unsupported usagestats value (" << usagestats
 782                  << ").";
 783     }
 784   }
 785 }
 786
 787 // Validates the product described in |product_state| according to |rules|.
 788 void InstallationValidator::ValidateProduct(
 789     const InstallationState& machine_state,
 790     bool system_install,
 791     const ProductState& product_state,
 792     const ProductRules& rules,
 793     bool* is_valid) {
 794   DCHECK(is_valid);
 795
 796   ProductContext ctx(machine_state, system_install, product_state, rules);
 797
 798   ValidateUninstallCommand(ctx, ctx.state.uninstall_command(),
 799                            ASCIIToUTF16("Google Update uninstall command"),
 800                            is_valid);
 801
 802   ValidateOldVersionValues(ctx, is_valid);
 803
 804   if (ctx.state.is_multi_install())
 805     ValidateMultiInstallProduct(ctx, is_valid);
 806
 807   ValidateAppCommands(ctx, is_valid);
 808
 809   ValidateUsageStats(ctx, is_valid);
 810 }
 811
 812 // static
 813 bool InstallationValidator::ValidateInstallationTypeForState(
 814     const InstallationState& machine_state,
 815     bool system_level,
 816     InstallationType* type) {
 817   DCHECK(type);
 818   bool rock_on = true;
 819   *type = NO_PRODUCTS;
 820
 821   // Does the system have any multi-installed products?
 822   const ProductState* multi_state =
 823       machine_state.GetProductState(system_level,
 824                                     BrowserDistribution::CHROME_BINARIES);
 825   if (multi_state != NULL)
 826     ValidateBinaries(machine_state, system_level, *multi_state, &rock_on);
 827
 828   // Is Chrome installed?
 829   const ProductState* product_state =
 830       machine_state.GetProductState(system_level,
 831                                     BrowserDistribution::CHROME_BROWSER);
 832   if (product_state != NULL) {
 833     ChromeRules chrome_rules;
 834     ValidateProduct(machine_state, system_level, *product_state,
 835                     chrome_rules, &rock_on);
 836     *type = static_cast<InstallationType>(
 837         *type | (product_state->is_multi_install() ?
 838                  ProductBits::CHROME_MULTI :
 839                  ProductBits::CHROME_SINGLE));
 840   }
 841
 842   // Is Chrome Frame installed?
 843   product_state =
 844       machine_state.GetProductState(system_level,
 845                                     BrowserDistribution::CHROME_FRAME);
 846   if (product_state != NULL) {
 847     ChromeFrameRules chrome_frame_rules;
 848     ValidateProduct(machine_state, system_level, *product_state,
 849                     chrome_frame_rules, &rock_on);
 850     int cf_bit = !product_state->is_multi_install() ?
 851         ProductBits::CHROME_FRAME_SINGLE :
 852         (product_state->uninstall_command().HasSwitch(
 853              switches::kChromeFrameReadyMode) ?
 854                  ProductBits::CHROME_FRAME_READY_MODE :
 855                  ProductBits::CHROME_FRAME_MULTI);
 856     *type = static_cast<InstallationType>(*type | cf_bit);
 857   }
 858
 859   // Is Chrome App Host installed?
 860   product_state =
 861       machine_state.GetProductState(system_level,
 862                                     BrowserDistribution::CHROME_APP_HOST);
 863   if (product_state != NULL) {
 864     ChromeAppHostRules chrome_app_host_rules;
 865     ValidateProduct(machine_state, system_level, *product_state,
 866                     chrome_app_host_rules, &rock_on);
 867     *type = static_cast<InstallationType>(*type | ProductBits::CHROME_APP_HOST);
 868     if (!product_state->is_multi_install()) {
 869       LOG(ERROR) << "Chrome App Launcher must always be multi-install.";
 870       rock_on = false;
 871     }
 872   }
 873
 874   DCHECK_NE(std::find(&kInstallationTypes[0],
 875                       &kInstallationTypes[arraysize(kInstallationTypes)],
 876                       *type),
 877             &kInstallationTypes[arraysize(kInstallationTypes)])
 878       << "Invalid combination of products found on system (" << *type << ")";
 879
 880   return rock_on;
 881 }
 882
 883 // static
 884 bool InstallationValidator::ValidateInstallationType(bool system_level,
 885                                                      InstallationType* type) {
 886   DCHECK(type);
 887   InstallationState machine_state;
 888
 889   machine_state.Initialize();
 890
 891   return ValidateInstallationTypeForState(machine_state, system_level, type);
 892 }
 893
 894 }  // namespace installer