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