uninstall.cc revision 5f1c94371a64b3196d4be9466099bb892df9b88e
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// This file defines the methods useful for uninstalling Chrome. 6 7#include "chrome/installer/setup/uninstall.h" 8 9#include <windows.h> 10 11#include <vector> 12 13#include "base/base_paths.h" 14#include "base/file_util.h" 15#include "base/files/file_enumerator.h" 16#include "base/path_service.h" 17#include "base/process/kill.h" 18#include "base/strings/string16.h" 19#include "base/strings/string_number_conversions.h" 20#include "base/strings/string_util.h" 21#include "base/strings/utf_string_conversions.h" 22#include "base/win/registry.h" 23#include "base/win/scoped_handle.h" 24#include "base/win/shortcut.h" 25#include "base/win/windows_version.h" 26#include "chrome/common/chrome_constants.h" 27#include "chrome/common/chrome_paths.h" 28#include "chrome/common/chrome_result_codes.h" 29#include "chrome/installer/setup/install.h" 30#include "chrome/installer/setup/install_worker.h" 31#include "chrome/installer/setup/setup_constants.h" 32#include "chrome/installer/setup/setup_util.h" 33#include "chrome/installer/util/auto_launch_util.h" 34#include "chrome/installer/util/browser_distribution.h" 35#include "chrome/installer/util/channel_info.h" 36#include "chrome/installer/util/delete_after_reboot_helper.h" 37#include "chrome/installer/util/firewall_manager_win.h" 38#include "chrome/installer/util/google_update_constants.h" 39#include "chrome/installer/util/google_update_settings.h" 40#include "chrome/installer/util/helper.h" 41#include "chrome/installer/util/install_util.h" 42#include "chrome/installer/util/installation_state.h" 43#include "chrome/installer/util/installer_state.h" 44#include "chrome/installer/util/logging_installer.h" 45#include "chrome/installer/util/self_cleaning_temp_dir.h" 46#include "chrome/installer/util/shell_util.h" 47#include "chrome/installer/util/util_constants.h" 48#include "chrome/installer/util/work_item.h" 49#include "chrome_elf/chrome_elf_constants.h" 50#include "content/public/common/result_codes.h" 51#include "rlz/lib/rlz_lib.h" 52 53using base::win::RegKey; 54 55namespace installer { 56 57namespace { 58 59// Avoid leaving behind a Temp dir. If one exists, ask SelfCleaningTempDir to 60// clean it up for us. This may involve scheduling it for deletion after 61// reboot. Don't report that a reboot is required in this case, however. 62// TODO(erikwright): Shouldn't this still lead to 63// ScheduleParentAndGrandparentForDeletion? 64void DeleteInstallTempDir(const base::FilePath& target_path) { 65 base::FilePath temp_path(target_path.DirName().Append( 66 installer::kInstallTempDir)); 67 if (base::DirectoryExists(temp_path)) { 68 SelfCleaningTempDir temp_dir; 69 if (!temp_dir.Initialize(target_path.DirName(), 70 installer::kInstallTempDir) || 71 !temp_dir.Delete()) { 72 LOG(ERROR) << "Failed to delete temp dir " << temp_path.value(); 73 } 74 } 75} 76 77// Iterates over the list of distribution types in |dist_types|, and 78// adds to |update_list| the work item to update the corresponding "ap" 79// registry value specified in |channel_info|. 80void AddChannelValueUpdateWorkItems( 81 const InstallationState& original_state, 82 const InstallerState& installer_state, 83 const ChannelInfo& channel_info, 84 const std::vector<BrowserDistribution::Type>& dist_types, 85 WorkItemList* update_list) { 86 const bool system_level = installer_state.system_install(); 87 const HKEY reg_root = installer_state.root_key(); 88 for (size_t i = 0; i < dist_types.size(); ++i) { 89 BrowserDistribution::Type dist_type = dist_types[i]; 90 const ProductState* product_state = 91 original_state.GetProductState(system_level, dist_type); 92 // Only modify other products if they're installed and multi. 93 if (product_state != NULL && 94 product_state->is_multi_install() && 95 !product_state->channel().Equals(channel_info)) { 96 BrowserDistribution* other_dist = 97 BrowserDistribution::GetSpecificDistribution(dist_type); 98 update_list->AddSetRegValueWorkItem(reg_root, 99 other_dist->GetStateKey(), 100 KEY_WOW64_32KEY, 101 google_update::kRegApField, 102 channel_info.value(), 103 true); 104 } else { 105 LOG_IF(ERROR, 106 product_state != NULL && product_state->is_multi_install()) 107 << "Channel value for " 108 << BrowserDistribution::GetSpecificDistribution( 109 dist_type)->GetDisplayName() 110 << " is somehow already set to the desired new value of " 111 << channel_info.value(); 112 } 113 } 114} 115 116// Makes appropriate changes to the Google Update "ap" value in the registry. 117// Specifically, removes the flags associated with this product ("-chrome" or 118// "-chromeframe") from the "ap" values for all other installed products and for 119// the multi-installer package. 120void ProcessGoogleUpdateItems(const InstallationState& original_state, 121 const InstallerState& installer_state, 122 const Product& product) { 123 DCHECK(installer_state.is_multi_install()); 124 const bool system_level = installer_state.system_install(); 125 BrowserDistribution* distribution = product.distribution(); 126 const ProductState* product_state = 127 original_state.GetProductState(system_level, distribution->GetType()); 128 DCHECK(product_state != NULL); 129 ChannelInfo channel_info; 130 131 // Remove product's flags from the channel value. 132 channel_info.set_value(product_state->channel().value()); 133 const bool modified = product.SetChannelFlags(false, &channel_info); 134 135 // Apply the new channel value to all other products and to the multi package. 136 if (modified) { 137 scoped_ptr<WorkItemList> 138 update_list(WorkItem::CreateNoRollbackWorkItemList()); 139 std::vector<BrowserDistribution::Type> dist_types; 140 for (size_t i = 0; i < BrowserDistribution::NUM_TYPES; ++i) { 141 BrowserDistribution::Type other_dist_type = 142 static_cast<BrowserDistribution::Type>(i); 143 if (distribution->GetType() != other_dist_type) 144 dist_types.push_back(other_dist_type); 145 } 146 AddChannelValueUpdateWorkItems(original_state, installer_state, 147 channel_info, dist_types, 148 update_list.get()); 149 bool success = update_list->Do(); 150 LOG_IF(ERROR, !success) << "Failed updating channel values."; 151 } 152} 153 154void ProcessOnOsUpgradeWorkItems(const InstallerState& installer_state, 155 const Product& product) { 156 scoped_ptr<WorkItemList> work_item_list( 157 WorkItem::CreateNoRollbackWorkItemList()); 158 AddOsUpgradeWorkItems(installer_state, base::FilePath(), Version(), product, 159 work_item_list.get()); 160 if (!work_item_list->Do()) 161 LOG(ERROR) << "Failed to remove on-os-upgrade command."; 162} 163 164void ProcessIELowRightsPolicyWorkItems(const InstallerState& installer_state) { 165 scoped_ptr<WorkItemList> work_items(WorkItem::CreateNoRollbackWorkItemList()); 166 AddDeleteOldIELowRightsPolicyWorkItems(installer_state, work_items.get()); 167 work_items->Do(); 168 RefreshElevationPolicy(); 169} 170 171void ClearRlzProductState() { 172 const rlz_lib::AccessPoint points[] = {rlz_lib::CHROME_OMNIBOX, 173 rlz_lib::CHROME_HOME_PAGE, 174 rlz_lib::CHROME_APP_LIST, 175 rlz_lib::NO_ACCESS_POINT}; 176 177 rlz_lib::ClearProductState(rlz_lib::CHROME, points); 178 179 // If chrome has been reactivated, clear all events for this brand as well. 180 base::string16 reactivation_brand_wide; 181 if (GoogleUpdateSettings::GetReactivationBrand(&reactivation_brand_wide)) { 182 std::string reactivation_brand(base::UTF16ToASCII(reactivation_brand_wide)); 183 rlz_lib::SupplementaryBranding branding(reactivation_brand.c_str()); 184 rlz_lib::ClearProductState(rlz_lib::CHROME, points); 185 } 186} 187 188// Decides whether setup.exe and the installer archive should be removed based 189// on the original and installer states: 190// * non-multi product being uninstalled: remove both 191// * any multi product left besides App Host: keep both 192// * only App Host left: keep setup.exe 193void CheckShouldRemoveSetupAndArchive(const InstallationState& original_state, 194 const InstallerState& installer_state, 195 bool* remove_setup, 196 bool* remove_archive) { 197 *remove_setup = true; 198 *remove_archive = true; 199 200 // If any multi-install product is left (other than App Host) we must leave 201 // the installer and archive. For the App Host, we only leave the installer. 202 if (!installer_state.is_multi_install()) { 203 VLOG(1) << "Removing all installer files for a non-multi installation."; 204 } else { 205 // Loop through all known products... 206 for (size_t i = 0; i < BrowserDistribution::NUM_TYPES; ++i) { 207 BrowserDistribution::Type dist_type = 208 static_cast<BrowserDistribution::Type>(i); 209 const ProductState* product_state = original_state.GetProductState( 210 installer_state.system_install(), dist_type); 211 // If the product is installed, in multi mode, and is not part of the 212 // active uninstallation... 213 if (product_state && product_state->is_multi_install() && 214 !installer_state.FindProduct(dist_type)) { 215 // setup.exe will not be removed as there is a remaining multi-install 216 // product. 217 *remove_setup = false; 218 // As a special case, we can still remove the actual archive if the 219 // only remaining product is the App Host. 220 if (dist_type != BrowserDistribution::CHROME_APP_HOST) { 221 VLOG(1) << "Keeping all installer files due to a remaining " 222 << "multi-install product."; 223 *remove_archive = false; 224 return; 225 } 226 VLOG(1) << "Keeping setup.exe due to a remaining " 227 << "app-host installation."; 228 } 229 } 230 VLOG(1) << "Removing the installer archive."; 231 if (remove_setup) 232 VLOG(1) << "Removing setup.exe."; 233 } 234} 235 236// Removes all files from the installer directory, leaving setup.exe iff 237// |remove_setup| is false. 238// Returns false in case of an error. 239bool RemoveInstallerFiles(const base::FilePath& installer_directory, 240 bool remove_setup) { 241 base::FileEnumerator file_enumerator( 242 installer_directory, 243 false, 244 base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES); 245 bool success = true; 246 247 base::FilePath setup_exe_base_name(installer::kSetupExe); 248 249 for (base::FilePath to_delete = file_enumerator.Next(); !to_delete.empty(); 250 to_delete = file_enumerator.Next()) { 251 if (!remove_setup && to_delete.BaseName() == setup_exe_base_name) 252 continue; 253 254 VLOG(1) << "Deleting installer path " << to_delete.value(); 255 if (!base::DeleteFile(to_delete, true)) { 256 LOG(ERROR) << "Failed to delete path: " << to_delete.value(); 257 success = false; 258 } 259 } 260 261 return success; 262} 263 264// Kills all Chrome processes, immediately. 265void CloseAllChromeProcesses() { 266 base::CleanupProcesses(installer::kChromeExe, base::TimeDelta(), 267 content::RESULT_CODE_HUNG, NULL); 268 base::CleanupProcesses(installer::kNaClExe, base::TimeDelta(), 269 content::RESULT_CODE_HUNG, NULL); 270} 271 272// Attempts to close the Chrome Frame helper process by sending WM_CLOSE 273// messages to its window, or just killing it if that doesn't work. 274void CloseChromeFrameHelperProcess() { 275 HWND window = FindWindow(installer::kChromeFrameHelperWndClass, NULL); 276 if (!::IsWindow(window)) 277 return; 278 279 const DWORD kWaitMs = 3000; 280 281 DWORD pid = 0; 282 ::GetWindowThreadProcessId(window, &pid); 283 DCHECK_NE(pid, 0U); 284 base::win::ScopedHandle process(::OpenProcess(SYNCHRONIZE, FALSE, pid)); 285 PLOG_IF(INFO, !process) << "Failed to open process: " << pid; 286 287 bool kill = true; 288 if (SendMessageTimeout(window, WM_CLOSE, 0, 0, SMTO_BLOCK, kWaitMs, NULL) && 289 process) { 290 VLOG(1) << "Waiting for " << installer::kChromeFrameHelperExe; 291 DWORD wait = ::WaitForSingleObject(process, kWaitMs); 292 if (wait != WAIT_OBJECT_0) { 293 LOG(WARNING) << "Wait for " << installer::kChromeFrameHelperExe 294 << " to exit failed or timed out."; 295 } else { 296 kill = false; 297 VLOG(1) << installer::kChromeFrameHelperExe << " exited normally."; 298 } 299 } 300 301 if (kill) { 302 VLOG(1) << installer::kChromeFrameHelperExe << " hung. Killing."; 303 base::CleanupProcesses(installer::kChromeFrameHelperExe, base::TimeDelta(), 304 content::RESULT_CODE_HUNG, NULL); 305 } 306} 307 308// Updates shortcuts to |old_target_exe| that have non-empty args, making them 309// target |new_target_exe| instead. The non-empty args requirement is a 310// heuristic to determine whether a shortcut is "user-generated". This routine 311// can only be called for user-level installs. 312void RetargetUserShortcutsWithArgs(const InstallerState& installer_state, 313 const Product& product, 314 const base::FilePath& old_target_exe, 315 const base::FilePath& new_target_exe) { 316 if (installer_state.system_install()) { 317 NOTREACHED(); 318 return; 319 } 320 BrowserDistribution* dist = product.distribution(); 321 ShellUtil::ShellChange install_level = ShellUtil::CURRENT_USER; 322 323 // Retarget all shortcuts that point to |old_target_exe| from all 324 // ShellUtil::ShortcutLocations. 325 VLOG(1) << "Retargeting shortcuts."; 326 for (int location = ShellUtil::SHORTCUT_LOCATION_FIRST; 327 location < ShellUtil::NUM_SHORTCUT_LOCATIONS; ++location) { 328 if (!ShellUtil::RetargetShortcutsWithArgs( 329 static_cast<ShellUtil::ShortcutLocation>(location), dist, 330 install_level, old_target_exe, new_target_exe)) { 331 LOG(WARNING) << "Failed to retarget shortcuts in ShortcutLocation: " 332 << location; 333 } 334 } 335} 336 337// Deletes shortcuts at |install_level| from Start menu, Desktop, 338// Quick Launch, taskbar, and secondary tiles on the Start Screen (Win8+). 339// Only shortcuts pointing to |target_exe| will be removed. 340void DeleteShortcuts(const InstallerState& installer_state, 341 const Product& product, 342 const base::FilePath& target_exe) { 343 BrowserDistribution* dist = product.distribution(); 344 345 // The per-user shortcut for this user, if present on a system-level install, 346 // has already been deleted in chrome_browser_main_win.cc::DoUninstallTasks(). 347 ShellUtil::ShellChange install_level = installer_state.system_install() ? 348 ShellUtil::SYSTEM_LEVEL : ShellUtil::CURRENT_USER; 349 350 // Delete and unpin all shortcuts that point to |target_exe| from all 351 // ShellUtil::ShortcutLocations. 352 VLOG(1) << "Deleting shortcuts."; 353 for (int location = ShellUtil::SHORTCUT_LOCATION_FIRST; 354 location < ShellUtil::NUM_SHORTCUT_LOCATIONS; ++location) { 355 if (!ShellUtil::RemoveShortcuts( 356 static_cast<ShellUtil::ShortcutLocation>(location), dist, 357 install_level, target_exe)) { 358 LOG(WARNING) << "Failed to delete shortcuts in ShortcutLocation:" 359 << location; 360 } 361 } 362} 363 364bool ScheduleParentAndGrandparentForDeletion(const base::FilePath& path) { 365 base::FilePath parent_dir = path.DirName(); 366 bool ret = ScheduleFileSystemEntityForDeletion(parent_dir); 367 if (!ret) { 368 LOG(ERROR) << "Failed to schedule parent dir for deletion: " 369 << parent_dir.value(); 370 } else { 371 base::FilePath grandparent_dir(parent_dir.DirName()); 372 ret = ScheduleFileSystemEntityForDeletion(grandparent_dir); 373 if (!ret) { 374 LOG(ERROR) << "Failed to schedule grandparent dir for deletion: " 375 << grandparent_dir.value(); 376 } 377 } 378 return ret; 379} 380 381// Deletes the given directory if it is empty. Returns DELETE_SUCCEEDED if the 382// directory is deleted, DELETE_NOT_EMPTY if it is not empty, and DELETE_FAILED 383// otherwise. 384DeleteResult DeleteEmptyDir(const base::FilePath& path) { 385 if (!base::IsDirectoryEmpty(path)) 386 return DELETE_NOT_EMPTY; 387 388 if (base::DeleteFile(path, true)) 389 return DELETE_SUCCEEDED; 390 391 LOG(ERROR) << "Failed to delete folder: " << path.value(); 392 return DELETE_FAILED; 393} 394 395// Get the user data directory, which is *not* DIR_USER_DATA for Chrome Frame. 396// TODO(grt): Remove Chrome Frame uninstall support when usage is low enough. 397base::FilePath GetUserDataDir(const Product& product) { 398 base::FilePath path; 399 bool is_chrome_frame = product.is_chrome_frame(); 400 int key = is_chrome_frame ? base::DIR_LOCAL_APP_DATA : chrome::DIR_USER_DATA; 401 if (!PathService::Get(key, &path)) 402 return base::FilePath(); 403 if (is_chrome_frame) { 404 path = path.Append(product.distribution()->GetInstallSubDir()); 405 path = path.Append(chrome::kUserDataDirname); 406 } 407 return path; 408} 409 410// Creates a copy of the local state file and returns a path to the copy. 411base::FilePath BackupLocalStateFile(const base::FilePath& user_data_dir) { 412 base::FilePath backup; 413 base::FilePath state_file(user_data_dir.Append(chrome::kLocalStateFilename)); 414 if (!base::CreateTemporaryFile(&backup)) 415 LOG(ERROR) << "Failed to create temporary file for Local State."; 416 else 417 base::CopyFile(state_file, backup); 418 return backup; 419} 420 421// Deletes a given user data directory as well as the containing product 422// directories if they are empty (e.g., "Google\Chrome"). 423DeleteResult DeleteUserDataDir(const base::FilePath& user_data_dir, 424 bool schedule_on_failure) { 425 if (user_data_dir.empty()) 426 return DELETE_SUCCEEDED; 427 428 DeleteResult result = DELETE_SUCCEEDED; 429 VLOG(1) << "Deleting user profile " << user_data_dir.value(); 430 if (!base::DeleteFile(user_data_dir, true)) { 431 LOG(ERROR) << "Failed to delete user profile dir: " 432 << user_data_dir.value(); 433 if (schedule_on_failure) { 434 ScheduleDirectoryForDeletion(user_data_dir); 435 result = DELETE_REQUIRES_REBOOT; 436 } else { 437 result = DELETE_FAILED; 438 } 439 } 440 441 if (result == DELETE_REQUIRES_REBOOT) { 442 ScheduleParentAndGrandparentForDeletion(user_data_dir); 443 } else { 444 const base::FilePath product_dir1(user_data_dir.DirName()); 445 if (!product_dir1.empty() && 446 DeleteEmptyDir(product_dir1) == DELETE_SUCCEEDED) { 447 const base::FilePath product_dir2(product_dir1.DirName()); 448 if (!product_dir2.empty()) 449 DeleteEmptyDir(product_dir2); 450 } 451 } 452 453 return result; 454} 455 456// Moves setup to a temporary file, outside of the install folder. Also attempts 457// to change the current directory to the TMP directory. On Windows, each 458// process has a handle to its CWD. If setup.exe's CWD happens to be within the 459// install directory, deletion will fail as a result of the open handle. 460bool MoveSetupOutOfInstallFolder(const InstallerState& installer_state, 461 const base::FilePath& setup_exe) { 462 // The list of files which setup.exe depends on at runtime. Typically this is 463 // solely setup.exe itself, but in component builds this also includes the 464 // DLLs installed by setup.exe. 465 std::vector<base::FilePath> setup_files; 466 setup_files.push_back(setup_exe); 467#if defined(COMPONENT_BUILD) 468 base::FileEnumerator file_enumerator( 469 setup_exe.DirName(), false, base::FileEnumerator::FILES, L"*.dll"); 470 for (base::FilePath setup_dll = file_enumerator.Next(); !setup_dll.empty(); 471 setup_dll = file_enumerator.Next()) { 472 setup_files.push_back(setup_dll); 473 } 474#endif // defined(COMPONENT_BUILD) 475 476 base::FilePath tmp_dir; 477 base::FilePath temp_file; 478 if (!PathService::Get(base::DIR_TEMP, &tmp_dir)) { 479 NOTREACHED(); 480 return false; 481 } 482 483 // Change the current directory to the TMP directory. See method comment above 484 // for details. 485 VLOG(1) << "Changing current directory to: " << tmp_dir.value(); 486 if (!base::SetCurrentDirectory(tmp_dir)) 487 PLOG(ERROR) << "Failed to change the current directory."; 488 489 for (std::vector<base::FilePath>::const_iterator it = setup_files.begin(); 490 it != setup_files.end(); ++it) { 491 const base::FilePath& setup_file = *it; 492 if (!base::CreateTemporaryFileInDir(tmp_dir, &temp_file)) { 493 LOG(ERROR) << "Failed to create temporary file for " 494 << setup_file.BaseName().value(); 495 return false; 496 } 497 498 VLOG(1) << "Attempting to move " << setup_file.BaseName().value() << " to: " 499 << temp_file.value(); 500 if (!base::Move(setup_file, temp_file)) { 501 PLOG(ERROR) << "Failed to move " << setup_file.BaseName().value() 502 << " to " << temp_file.value(); 503 return false; 504 } 505 506 // We cannot delete the file right away, but try to delete it some other 507 // way. Either with the help of a different process or the system. 508 if (!base::DeleteFileAfterReboot(temp_file)) { 509 const uint32 kDeleteAfterMs = 10 * 1000; 510 installer::DeleteFileFromTempProcess(temp_file, kDeleteAfterMs); 511 } 512 } 513 return true; 514} 515 516DeleteResult DeleteAppHostFilesAndFolders(const InstallerState& installer_state, 517 const Version& installed_version) { 518 const base::FilePath& target_path = installer_state.target_path(); 519 if (target_path.empty()) { 520 LOG(ERROR) << "DeleteAppHostFilesAndFolders: no installation destination " 521 << "path."; 522 return DELETE_FAILED; // Nothing else we can do to uninstall, so we return. 523 } 524 525 DeleteInstallTempDir(target_path); 526 527 DeleteResult result = DELETE_SUCCEEDED; 528 529 base::FilePath app_host_exe(target_path.Append(installer::kChromeAppHostExe)); 530 if (!base::DeleteFile(app_host_exe, false)) { 531 result = DELETE_FAILED; 532 LOG(ERROR) << "Failed to delete path: " << app_host_exe.value(); 533 } 534 535 return result; 536} 537 538DeleteResult DeleteChromeFilesAndFolders(const InstallerState& installer_state, 539 const base::FilePath& setup_exe) { 540 const base::FilePath& target_path = installer_state.target_path(); 541 if (target_path.empty()) { 542 LOG(ERROR) << "DeleteChromeFilesAndFolders: no installation destination " 543 << "path."; 544 return DELETE_FAILED; // Nothing else we can do to uninstall, so we return. 545 } 546 547 DeleteInstallTempDir(target_path); 548 549 DeleteResult result = DELETE_SUCCEEDED; 550 551 base::FilePath installer_directory; 552 if (target_path.IsParent(setup_exe)) 553 installer_directory = setup_exe.DirName(); 554 555 // Enumerate all the files in target_path recursively (breadth-first). 556 // We delete a file or folder unless it is a parent/child of the installer 557 // directory. For parents of the installer directory, we will later recurse 558 // and delete all the children (that are not also parents/children of the 559 // installer directory). 560 base::FileEnumerator file_enumerator(target_path, true, 561 base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES); 562 for (base::FilePath to_delete = file_enumerator.Next(); !to_delete.empty(); 563 to_delete = file_enumerator.Next()) { 564 if (to_delete.BaseName().value() == installer::kChromeAppHostExe) 565 continue; 566 if (!installer_directory.empty() && 567 (to_delete == installer_directory || 568 installer_directory.IsParent(to_delete) || 569 to_delete.IsParent(installer_directory))) { 570 continue; 571 } 572 573 VLOG(1) << "Deleting install path " << to_delete.value(); 574 if (!base::DeleteFile(to_delete, true)) { 575 LOG(ERROR) << "Failed to delete path (1st try): " << to_delete.value(); 576 if (installer_state.FindProduct(BrowserDistribution::CHROME_FRAME)) { 577 // We don't try killing Chrome processes for Chrome Frame builds since 578 // that is unlikely to help. Instead, schedule files for deletion and 579 // return a value that will trigger a reboot prompt. 580 base::FileEnumerator::FileInfo find_info = file_enumerator.GetInfo(); 581 if (find_info.IsDirectory()) 582 ScheduleDirectoryForDeletion(to_delete); 583 else 584 ScheduleFileSystemEntityForDeletion(to_delete); 585 result = DELETE_REQUIRES_REBOOT; 586 } else { 587 // Try closing any running Chrome processes and deleting files once 588 // again. 589 CloseAllChromeProcesses(); 590 if (!base::DeleteFile(to_delete, true)) { 591 LOG(ERROR) << "Failed to delete path (2nd try): " 592 << to_delete.value(); 593 result = DELETE_FAILED; 594 break; 595 } 596 } 597 } 598 } 599 600 return result; 601} 602 603// This method checks if Chrome is currently running or if the user has 604// cancelled the uninstall operation by clicking Cancel on the confirmation 605// box that Chrome pops up. 606InstallStatus IsChromeActiveOrUserCancelled( 607 const InstallerState& installer_state, 608 const Product& product) { 609 int32 exit_code = content::RESULT_CODE_NORMAL_EXIT; 610 CommandLine options(CommandLine::NO_PROGRAM); 611 options.AppendSwitch(installer::switches::kUninstall); 612 613 // Here we want to save user from frustration (in case of Chrome crashes) 614 // and continue with the uninstallation as long as chrome.exe process exit 615 // code is NOT one of the following: 616 // - UNINSTALL_CHROME_ALIVE - chrome.exe is currently running 617 // - UNINSTALL_USER_CANCEL - User cancelled uninstallation 618 // - HUNG - chrome.exe was killed by HuntForZombieProcesses() (until we can 619 // give this method some brains and not kill chrome.exe launched 620 // by us, we will not uninstall if we get this return code). 621 VLOG(1) << "Launching Chrome to do uninstall tasks."; 622 if (product.LaunchChromeAndWait(installer_state.target_path(), options, 623 &exit_code)) { 624 VLOG(1) << "chrome.exe launched for uninstall confirmation returned: " 625 << exit_code; 626 if ((exit_code == chrome::RESULT_CODE_UNINSTALL_CHROME_ALIVE) || 627 (exit_code == chrome::RESULT_CODE_UNINSTALL_USER_CANCEL) || 628 (exit_code == content::RESULT_CODE_HUNG)) 629 return installer::UNINSTALL_CANCELLED; 630 631 if (exit_code == chrome::RESULT_CODE_UNINSTALL_DELETE_PROFILE) 632 return installer::UNINSTALL_DELETE_PROFILE; 633 } else { 634 PLOG(ERROR) << "Failed to launch chrome.exe for uninstall confirmation."; 635 } 636 637 return installer::UNINSTALL_CONFIRMED; 638} 639 640bool ShouldDeleteProfile(const InstallerState& installer_state, 641 const CommandLine& cmd_line, InstallStatus status, 642 const Product& product) { 643 bool should_delete = false; 644 645 // Chrome Frame uninstallations always want to delete the profile (we have no 646 // UI to prompt otherwise and the profile stores no useful data anyway) 647 // unless they are managed by MSI. MSI uninstalls will explicitly include 648 // the --delete-profile flag to distinguish them from MSI upgrades. 649 if (product.is_chrome_frame() && !installer_state.is_msi()) { 650 should_delete = true; 651 } else { 652 should_delete = 653 status == installer::UNINSTALL_DELETE_PROFILE || 654 cmd_line.HasSwitch(installer::switches::kDeleteProfile); 655 } 656 657 return should_delete; 658} 659 660// Removes XP-era filetype registration making Chrome the default browser. 661// MSDN (see http://msdn.microsoft.com/library/windows/desktop/cc144148.aspx) 662// tells us not to do this, but certain applications break following 663// uninstallation if we don't. 664void RemoveFiletypeRegistration(const InstallerState& installer_state, 665 HKEY root, 666 const base::string16& browser_entry_suffix) { 667 base::string16 classes_path(ShellUtil::kRegClasses); 668 classes_path.push_back(base::FilePath::kSeparators[0]); 669 670 BrowserDistribution* distribution = BrowserDistribution::GetDistribution(); 671 const base::string16 prog_id( 672 distribution->GetBrowserProgIdPrefix() + browser_entry_suffix); 673 674 // Delete each filetype association if it references this Chrome. Take care 675 // not to delete the association if it references a system-level install of 676 // Chrome (only a risk if the suffix is empty). Don't delete the whole key 677 // since other apps may have stored data there. 678 std::vector<const wchar_t*> cleared_assocs; 679 if (installer_state.system_install() || 680 !browser_entry_suffix.empty() || 681 !base::win::RegKey(HKEY_LOCAL_MACHINE, (classes_path + prog_id).c_str(), 682 KEY_QUERY_VALUE).Valid()) { 683 InstallUtil::ValueEquals prog_id_pred(prog_id); 684 for (const wchar_t* const* filetype = 685 &ShellUtil::kPotentialFileAssociations[0]; *filetype != NULL; 686 ++filetype) { 687 if (InstallUtil::DeleteRegistryValueIf( 688 root, (classes_path + *filetype).c_str(), WorkItem::kWow64Default, 689 NULL, prog_id_pred) == InstallUtil::DELETED) { 690 cleared_assocs.push_back(*filetype); 691 } 692 } 693 } 694 695 // For all filetype associations in HKLM that have just been removed, attempt 696 // to restore some reasonable value. We have no definitive way of knowing 697 // what handlers are the most appropriate, so we use a fixed mapping based on 698 // the default values for a fresh install of Windows. 699 if (root == HKEY_LOCAL_MACHINE) { 700 base::string16 assoc; 701 base::win::RegKey key; 702 703 for (size_t i = 0; i < cleared_assocs.size(); ++i) { 704 const wchar_t* replacement_prog_id = NULL; 705 assoc.assign(cleared_assocs[i]); 706 707 // Inelegant, but simpler than a pure data-driven approach. 708 if (assoc == L".htm" || assoc == L".html") 709 replacement_prog_id = L"htmlfile"; 710 else if (assoc == L".xht" || assoc == L".xhtml") 711 replacement_prog_id = L"xhtmlfile"; 712 713 if (!replacement_prog_id) { 714 LOG(WARNING) << "No known replacement ProgID for " << assoc 715 << " files."; 716 } else if (key.Open(HKEY_LOCAL_MACHINE, 717 (classes_path + replacement_prog_id).c_str(), 718 KEY_QUERY_VALUE) == ERROR_SUCCESS && 719 (key.Open(HKEY_LOCAL_MACHINE, (classes_path + assoc).c_str(), 720 KEY_SET_VALUE) != ERROR_SUCCESS || 721 key.WriteValue(NULL, replacement_prog_id) != ERROR_SUCCESS)) { 722 // The replacement ProgID is registered on the computer but the attempt 723 // to set it for the filetype failed. 724 LOG(ERROR) << "Failed to restore system-level filetype association " 725 << assoc << " = " << replacement_prog_id; 726 } 727 } 728 } 729} 730 731// Builds and executes a work item list to remove DelegateExecute verb handler 732// work items for |product|. This will be a noop for products whose 733// corresponding BrowserDistribution implementations do not publish a CLSID via 734// GetCommandExecuteImplClsid. 735bool ProcessDelegateExecuteWorkItems(const InstallerState& installer_state, 736 const Product& product) { 737 scoped_ptr<WorkItemList> item_list(WorkItem::CreateNoRollbackWorkItemList()); 738 AddDelegateExecuteWorkItems(installer_state, base::FilePath(), Version(), 739 product, item_list.get()); 740 return item_list->Do(); 741} 742 743// Removes Active Setup entries from the registry. This cannot be done through 744// a work items list as usual because of different paths based on conditionals, 745// but otherwise respects the no rollback/best effort uninstall mentality. 746// This will only apply for system-level installs of Chrome/Chromium and will be 747// a no-op for all other types of installs. 748void UninstallActiveSetupEntries(const InstallerState& installer_state, 749 const Product& product) { 750 VLOG(1) << "Uninstalling registry entries for ActiveSetup."; 751 BrowserDistribution* distribution = product.distribution(); 752 753 if (!product.is_chrome() || !installer_state.system_install()) { 754 const char* install_level = 755 installer_state.system_install() ? "system" : "user"; 756 VLOG(1) << "No Active Setup processing to do for " << install_level 757 << "-level " << distribution->GetDisplayName(); 758 return; 759 } 760 761 const base::string16 active_setup_path( 762 InstallUtil::GetActiveSetupPath(distribution)); 763 InstallUtil::DeleteRegistryKey(HKEY_LOCAL_MACHINE, active_setup_path, 764 WorkItem::kWow64Default); 765 766 // Windows leaves keys behind in HKCU\\Software\\(Wow6432Node\\)?Microsoft\\ 767 // Active Setup\\Installed Components\\{guid} 768 // for every user that logged in since system-level Chrome was installed. 769 // This is a problem because Windows compares the value of the Version subkey 770 // in there with the value of the Version subkey in the matching HKLM entries 771 // before running Chrome's Active Setup so if Chrome was to be reinstalled 772 // with a lesser version (e.g. switching back to a more stable channel), the 773 // affected users would not have Chrome's Active Setup called until Chrome 774 // eventually updated passed that user's registered Version. 775 // 776 // It is however very hard to delete those values as the registry hives for 777 // other users are not loaded by default under HKEY_USERS (unless a user is 778 // logged on or has a process impersonating him). 779 // 780 // Following our best effort uninstall practices, try to delete the value in 781 // all users hives. If a given user's hive is not loaded, try to load it to 782 // proceed with the deletion (failure to do so is ignored). 783 784 static const wchar_t kProfileList[] = 785 L"Software\\Microsoft\\Windows NT\\CurrentVersion\\ProfileList\\"; 786 787 // Windows automatically adds Wow6432Node when creating/deleting the HKLM key, 788 // but doesn't seem to do so when manually deleting the user-level keys it 789 // created. 790 base::string16 alternate_active_setup_path(active_setup_path); 791 alternate_active_setup_path.insert(arraysize("Software\\") - 1, 792 L"Wow6432Node\\"); 793 794 // These two privileges are required by RegLoadKey() and RegUnloadKey() below. 795 ScopedTokenPrivilege se_restore_name_privilege(SE_RESTORE_NAME); 796 ScopedTokenPrivilege se_backup_name_privilege(SE_BACKUP_NAME); 797 if (!se_restore_name_privilege.is_enabled() || 798 !se_backup_name_privilege.is_enabled()) { 799 // This is not a critical failure as those privileges aren't required to 800 // clean hives that are already loaded, but attempts to LoadRegKey() below 801 // will fail. 802 LOG(WARNING) << "Failed to enable privileges required to load registry " 803 "hives."; 804 } 805 806 for (base::win::RegistryKeyIterator it(HKEY_LOCAL_MACHINE, kProfileList); 807 it.Valid(); ++it) { 808 const wchar_t* profile_sid = it.Name(); 809 810 // First check if this user's registry hive needs to be loaded in 811 // HKEY_USERS. 812 base::win::RegKey user_reg_root_probe( 813 HKEY_USERS, profile_sid, KEY_READ); 814 bool loaded_hive = false; 815 if (!user_reg_root_probe.Valid()) { 816 VLOG(1) << "Attempting to load registry hive for " << profile_sid; 817 818 base::string16 reg_profile_info_path(kProfileList); 819 reg_profile_info_path.append(profile_sid); 820 base::win::RegKey reg_profile_info_key( 821 HKEY_LOCAL_MACHINE, reg_profile_info_path.c_str(), KEY_READ); 822 823 base::string16 profile_path; 824 LONG result = reg_profile_info_key.ReadValue(L"ProfileImagePath", 825 &profile_path); 826 if (result != ERROR_SUCCESS) { 827 LOG(ERROR) << "Error reading ProfileImagePath: " << result; 828 continue; 829 } 830 base::FilePath registry_hive_file(profile_path); 831 registry_hive_file = registry_hive_file.AppendASCII("NTUSER.DAT"); 832 833 result = RegLoadKey(HKEY_USERS, profile_sid, 834 registry_hive_file.value().c_str()); 835 if (result != ERROR_SUCCESS) { 836 LOG(ERROR) << "Error loading registry hive: " << result; 837 continue; 838 } 839 840 VLOG(1) << "Loaded registry hive for " << profile_sid; 841 loaded_hive = true; 842 } 843 844 base::win::RegKey user_reg_root( 845 HKEY_USERS, profile_sid, KEY_ALL_ACCESS); 846 847 LONG result = user_reg_root.DeleteKey(active_setup_path.c_str()); 848 if (result != ERROR_SUCCESS) { 849 result = user_reg_root.DeleteKey(alternate_active_setup_path.c_str()); 850 if (result != ERROR_SUCCESS && result != ERROR_FILE_NOT_FOUND) { 851 LOG(ERROR) << "Failed to delete key at " << active_setup_path 852 << " and at " << alternate_active_setup_path 853 << ", result: " << result; 854 } 855 } 856 857 if (loaded_hive) { 858 user_reg_root.Close(); 859 if (RegUnLoadKey(HKEY_USERS, profile_sid) == ERROR_SUCCESS) 860 VLOG(1) << "Unloaded registry hive for " << profile_sid; 861 else 862 LOG(ERROR) << "Error unloading registry hive for " << profile_sid; 863 } 864 } 865} 866 867// Removes the persistent blacklist state for the current user. Note: this will 868// not remove the state for users other than the one uninstalling chrome on a 869// system-level install (http://crbug.com/388725). Doing so would require 870// extracting the per-user registry hive iteration from 871// UninstallActiveSetupEntries so that it could service multiple tasks. 872void RemoveBlacklistState() { 873 InstallUtil::DeleteRegistryKey(HKEY_CURRENT_USER, 874 blacklist::kRegistryBeaconPath, 875 0); // wow64_access 876 InstallUtil::DeleteRegistryKey(HKEY_CURRENT_USER, 877 blacklist::kRegistryFinchListPath, 878 0); // wow64_access 879} 880 881} // namespace 882 883DeleteResult DeleteChromeDirectoriesIfEmpty( 884 const base::FilePath& application_directory) { 885 DeleteResult result(DeleteEmptyDir(application_directory)); 886 if (result == DELETE_SUCCEEDED) { 887 // Now check and delete if the parent directories are empty 888 // For example Google\Chrome or Chromium 889 const base::FilePath product_directory(application_directory.DirName()); 890 if (!product_directory.empty()) { 891 result = DeleteEmptyDir(product_directory); 892 if (result == DELETE_SUCCEEDED) { 893 const base::FilePath vendor_directory(product_directory.DirName()); 894 if (!vendor_directory.empty()) 895 result = DeleteEmptyDir(vendor_directory); 896 } 897 } 898 } 899 if (result == DELETE_NOT_EMPTY) 900 result = DELETE_SUCCEEDED; 901 return result; 902} 903 904bool DeleteChromeRegistrationKeys(const InstallerState& installer_state, 905 BrowserDistribution* dist, 906 HKEY root, 907 const base::string16& browser_entry_suffix, 908 InstallStatus* exit_code) { 909 DCHECK(exit_code); 910 if (dist->GetDefaultBrowserControlPolicy() == 911 BrowserDistribution::DEFAULT_BROWSER_UNSUPPORTED) { 912 // We should have never set those keys. 913 return true; 914 } 915 916 base::FilePath chrome_exe(installer_state.target_path().Append(kChromeExe)); 917 918 // Delete Software\Classes\ChromeHTML. 919 const base::string16 prog_id( 920 dist->GetBrowserProgIdPrefix() + browser_entry_suffix); 921 base::string16 reg_prog_id(ShellUtil::kRegClasses); 922 reg_prog_id.push_back(base::FilePath::kSeparators[0]); 923 reg_prog_id.append(prog_id); 924 InstallUtil::DeleteRegistryKey(root, reg_prog_id, WorkItem::kWow64Default); 925 926 // Delete Software\Classes\Chrome. 927 base::string16 reg_app_id(ShellUtil::kRegClasses); 928 reg_app_id.push_back(base::FilePath::kSeparators[0]); 929 // Append the requested suffix manually here (as ShellUtil::GetBrowserModelId 930 // would otherwise try to figure out the currently installed suffix). 931 reg_app_id.append(dist->GetBaseAppId() + browser_entry_suffix); 932 InstallUtil::DeleteRegistryKey(root, reg_app_id, WorkItem::kWow64Default); 933 934 // Delete all Start Menu Internet registrations that refer to this Chrome. 935 { 936 using base::win::RegistryKeyIterator; 937 InstallUtil::ProgramCompare open_command_pred(chrome_exe); 938 base::string16 client_name; 939 base::string16 client_key; 940 base::string16 open_key; 941 for (RegistryKeyIterator iter(root, ShellUtil::kRegStartMenuInternet); 942 iter.Valid(); ++iter) { 943 client_name.assign(iter.Name()); 944 client_key.assign(ShellUtil::kRegStartMenuInternet) 945 .append(1, L'\\') 946 .append(client_name); 947 open_key.assign(client_key).append(ShellUtil::kRegShellOpen); 948 if (InstallUtil::DeleteRegistryKeyIf(root, client_key, open_key, 949 WorkItem::kWow64Default, NULL, open_command_pred) 950 != InstallUtil::NOT_FOUND) { 951 // Delete the default value of SOFTWARE\Clients\StartMenuInternet if it 952 // references this Chrome (i.e., if it was made the default browser). 953 InstallUtil::DeleteRegistryValueIf( 954 root, ShellUtil::kRegStartMenuInternet, WorkItem::kWow64Default, 955 NULL, InstallUtil::ValueEquals(client_name)); 956 // Also delete the value for the default user if we're operating in 957 // HKLM. 958 if (root == HKEY_LOCAL_MACHINE) { 959 InstallUtil::DeleteRegistryValueIf( 960 HKEY_USERS, 961 base::string16(L".DEFAULT\\").append( 962 ShellUtil::kRegStartMenuInternet).c_str(), 963 WorkItem::kWow64Default, NULL, 964 InstallUtil::ValueEquals(client_name)); 965 } 966 } 967 } 968 } 969 970 // Delete Software\RegisteredApplications\Chromium 971 InstallUtil::DeleteRegistryValue( 972 root, ShellUtil::kRegRegisteredApplications, 973 WorkItem::kWow64Default, 974 dist->GetBaseAppName() + browser_entry_suffix); 975 976 // Delete the App Paths and Applications keys that let Explorer find Chrome: 977 // http://msdn.microsoft.com/en-us/library/windows/desktop/ee872121 978 base::string16 app_key(ShellUtil::kRegClasses); 979 app_key.push_back(base::FilePath::kSeparators[0]); 980 app_key.append(L"Applications"); 981 app_key.push_back(base::FilePath::kSeparators[0]); 982 app_key.append(installer::kChromeExe); 983 InstallUtil::DeleteRegistryKey(root, app_key, WorkItem::kWow64Default); 984 985 base::string16 app_path_key(ShellUtil::kAppPathsRegistryKey); 986 app_path_key.push_back(base::FilePath::kSeparators[0]); 987 app_path_key.append(installer::kChromeExe); 988 InstallUtil::DeleteRegistryKey(root, app_path_key, WorkItem::kWow64Default); 989 990 // Cleanup OpenWithList and OpenWithProgids: 991 // http://msdn.microsoft.com/en-us/library/bb166549 992 base::string16 file_assoc_key; 993 base::string16 open_with_list_key; 994 base::string16 open_with_progids_key; 995 for (int i = 0; ShellUtil::kPotentialFileAssociations[i] != NULL; ++i) { 996 file_assoc_key.assign(ShellUtil::kRegClasses); 997 file_assoc_key.push_back(base::FilePath::kSeparators[0]); 998 file_assoc_key.append(ShellUtil::kPotentialFileAssociations[i]); 999 file_assoc_key.push_back(base::FilePath::kSeparators[0]); 1000 1001 open_with_list_key.assign(file_assoc_key); 1002 open_with_list_key.append(L"OpenWithList"); 1003 open_with_list_key.push_back(base::FilePath::kSeparators[0]); 1004 open_with_list_key.append(installer::kChromeExe); 1005 InstallUtil::DeleteRegistryKey( 1006 root, open_with_list_key, WorkItem::kWow64Default); 1007 1008 open_with_progids_key.assign(file_assoc_key); 1009 open_with_progids_key.append(ShellUtil::kRegOpenWithProgids); 1010 InstallUtil::DeleteRegistryValue(root, open_with_progids_key, 1011 WorkItem::kWow64Default, prog_id); 1012 } 1013 1014 // Cleanup in case Chrome had been made the default browser. 1015 1016 // Delete the default value of SOFTWARE\Clients\StartMenuInternet if it 1017 // references this Chrome. Do this explicitly here for the case where HKCU is 1018 // being processed; the iteration above will have no hits since registration 1019 // lives in HKLM. 1020 InstallUtil::DeleteRegistryValueIf( 1021 root, ShellUtil::kRegStartMenuInternet, WorkItem::kWow64Default, NULL, 1022 InstallUtil::ValueEquals(dist->GetBaseAppName() + browser_entry_suffix)); 1023 1024 // Delete each protocol association if it references this Chrome. 1025 InstallUtil::ProgramCompare open_command_pred(chrome_exe); 1026 base::string16 parent_key(ShellUtil::kRegClasses); 1027 parent_key.push_back(base::FilePath::kSeparators[0]); 1028 const base::string16::size_type base_length = parent_key.size(); 1029 base::string16 child_key; 1030 for (const wchar_t* const* proto = 1031 &ShellUtil::kPotentialProtocolAssociations[0]; 1032 *proto != NULL; 1033 ++proto) { 1034 parent_key.resize(base_length); 1035 parent_key.append(*proto); 1036 child_key.assign(parent_key).append(ShellUtil::kRegShellOpen); 1037 InstallUtil::DeleteRegistryKeyIf(root, parent_key, child_key, 1038 WorkItem::kWow64Default, NULL, 1039 open_command_pred); 1040 } 1041 1042 RemoveFiletypeRegistration(installer_state, root, browser_entry_suffix); 1043 1044 *exit_code = installer::UNINSTALL_SUCCESSFUL; 1045 return true; 1046} 1047 1048void RemoveChromeLegacyRegistryKeys(BrowserDistribution* dist, 1049 const base::string16& chrome_exe) { 1050 // We used to register Chrome to handle crx files, but this turned out 1051 // to be not worth the hassle. Remove these old registry entries if 1052 // they exist. See: http://codereview.chromium.org/210007 1053 1054#if defined(GOOGLE_CHROME_BUILD) 1055const wchar_t kChromeExtProgId[] = L"ChromeExt"; 1056#else 1057const wchar_t kChromeExtProgId[] = L"ChromiumExt"; 1058#endif 1059 1060 HKEY roots[] = { HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER }; 1061 for (size_t i = 0; i < arraysize(roots); ++i) { 1062 base::string16 suffix; 1063 if (roots[i] == HKEY_LOCAL_MACHINE) 1064 suffix = ShellUtil::GetCurrentInstallationSuffix(dist, chrome_exe); 1065 1066 // Delete Software\Classes\ChromeExt, 1067 base::string16 ext_prog_id(ShellUtil::kRegClasses); 1068 ext_prog_id.push_back(base::FilePath::kSeparators[0]); 1069 ext_prog_id.append(kChromeExtProgId); 1070 ext_prog_id.append(suffix); 1071 InstallUtil::DeleteRegistryKey(roots[i], ext_prog_id, 1072 WorkItem::kWow64Default); 1073 1074 // Delete Software\Classes\.crx, 1075 base::string16 ext_association(ShellUtil::kRegClasses); 1076 ext_association.append(L"\\"); 1077 ext_association.append(L".crx"); 1078 InstallUtil::DeleteRegistryKey(roots[i], ext_association, 1079 WorkItem::kWow64Default); 1080 } 1081} 1082 1083void UninstallFirewallRules(BrowserDistribution* dist, 1084 const base::FilePath& chrome_exe) { 1085 scoped_ptr<FirewallManager> manager = 1086 FirewallManager::Create(dist, chrome_exe); 1087 if (manager) 1088 manager->RemoveFirewallRules(); 1089} 1090 1091InstallStatus UninstallProduct(const InstallationState& original_state, 1092 const InstallerState& installer_state, 1093 const base::FilePath& setup_exe, 1094 const Product& product, 1095 bool remove_all, 1096 bool force_uninstall, 1097 const CommandLine& cmd_line) { 1098 InstallStatus status = installer::UNINSTALL_CONFIRMED; 1099 BrowserDistribution* browser_dist = product.distribution(); 1100 const base::string16 chrome_exe( 1101 installer_state.target_path().Append(installer::kChromeExe).value()); 1102 1103 bool is_chrome = product.is_chrome(); 1104 1105 VLOG(1) << "UninstallProduct: " << browser_dist->GetDisplayName(); 1106 1107 if (force_uninstall) { 1108 // Since --force-uninstall command line option is used, we are going to 1109 // do silent uninstall. Try to close all running Chrome instances. 1110 // NOTE: We don't do this for Chrome Frame. 1111 if (is_chrome) 1112 CloseAllChromeProcesses(); 1113 } else if (is_chrome) { 1114 // no --force-uninstall so lets show some UI dialog boxes. 1115 status = IsChromeActiveOrUserCancelled(installer_state, product); 1116 if (status != installer::UNINSTALL_CONFIRMED && 1117 status != installer::UNINSTALL_DELETE_PROFILE) 1118 return status; 1119 1120 const base::string16 suffix( 1121 ShellUtil::GetCurrentInstallationSuffix(browser_dist, chrome_exe)); 1122 1123 // Check if we need admin rights to cleanup HKLM (the conditions for 1124 // requiring a cleanup are the same as the conditions to do the actual 1125 // cleanup where DeleteChromeRegistrationKeys() is invoked for 1126 // HKEY_LOCAL_MACHINE below). If we do, try to launch another uninstaller 1127 // (silent) in elevated mode to do HKLM cleanup. 1128 // And continue uninstalling in the current process also to do HKCU cleanup. 1129 if (remove_all && 1130 ShellUtil::QuickIsChromeRegisteredInHKLM( 1131 browser_dist, chrome_exe, suffix) && 1132 !::IsUserAnAdmin() && 1133 base::win::GetVersion() >= base::win::VERSION_VISTA && 1134 !cmd_line.HasSwitch(installer::switches::kRunAsAdmin)) { 1135 CommandLine new_cmd(CommandLine::NO_PROGRAM); 1136 new_cmd.AppendArguments(cmd_line, true); 1137 // Append --run-as-admin flag to let the new instance of setup.exe know 1138 // that we already tried to launch ourselves as admin. 1139 new_cmd.AppendSwitch(installer::switches::kRunAsAdmin); 1140 // Append --remove-chrome-registration to remove registry keys only. 1141 new_cmd.AppendSwitch(installer::switches::kRemoveChromeRegistration); 1142 if (!suffix.empty()) { 1143 new_cmd.AppendSwitchNative( 1144 installer::switches::kRegisterChromeBrowserSuffix, suffix); 1145 } 1146 DWORD exit_code = installer::UNKNOWN_STATUS; 1147 InstallUtil::ExecuteExeAsAdmin(new_cmd, &exit_code); 1148 } 1149 } 1150 1151 if (is_chrome) { 1152 // Chrome is not in use so lets uninstall Chrome by deleting various files 1153 // and registry entries. Here we will just make best effort and keep going 1154 // in case of errors. 1155 ClearRlzProductState(); 1156 // Delete the key that delegate_execute might make. 1157 if (base::win::GetVersion() >= base::win::VERSION_WIN8) { 1158 InstallUtil::DeleteRegistryKey(HKEY_CURRENT_USER, 1159 chrome::kMetroRegistryPath, 1160 WorkItem::kWow64Default); 1161 } 1162 1163 auto_launch_util::DisableAllAutoStartFeatures( 1164 base::ASCIIToUTF16(chrome::kInitialProfile)); 1165 1166 // If user-level chrome is self-destructing as a result of encountering a 1167 // system-level chrome, retarget owned non-default shortcuts (app shortcuts, 1168 // profile shortcuts, etc.) to the system-level chrome. 1169 if (cmd_line.HasSwitch(installer::switches::kSelfDestruct) && 1170 !installer_state.system_install()) { 1171 const base::FilePath system_chrome_path( 1172 GetChromeInstallPath(true, browser_dist). 1173 Append(installer::kChromeExe)); 1174 VLOG(1) << "Retargeting user-generated Chrome shortcuts."; 1175 if (base::PathExists(system_chrome_path)) { 1176 RetargetUserShortcutsWithArgs(installer_state, product, 1177 base::FilePath(chrome_exe), 1178 system_chrome_path); 1179 } else { 1180 LOG(ERROR) << "Retarget failed: system-level Chrome not found."; 1181 } 1182 } 1183 1184 DeleteShortcuts(installer_state, product, base::FilePath(chrome_exe)); 1185 } 1186 1187 // Delete the registry keys (Uninstall key and Version key). 1188 HKEY reg_root = installer_state.root_key(); 1189 1190 // Note that we must retrieve the distribution-specific data before deleting 1191 // product.GetVersionKey(). 1192 base::string16 distribution_data(browser_dist->GetDistributionData(reg_root)); 1193 1194 // Remove Control Panel uninstall link. 1195 if (product.ShouldCreateUninstallEntry()) { 1196 InstallUtil::DeleteRegistryKey( 1197 reg_root, browser_dist->GetUninstallRegPath(), KEY_WOW64_32KEY); 1198 } 1199 1200 // Remove Omaha product key. 1201 InstallUtil::DeleteRegistryKey( 1202 reg_root, browser_dist->GetVersionKey(), KEY_WOW64_32KEY); 1203 1204 // Also try to delete the MSI value in the ClientState key (it might not be 1205 // there). This is due to a Google Update behaviour where an uninstall and a 1206 // rapid reinstall might result in stale values from the old ClientState key 1207 // being picked up on reinstall. 1208 product.SetMsiMarker(installer_state.system_install(), false); 1209 1210 InstallStatus ret = installer::UNKNOWN_STATUS; 1211 1212 if (is_chrome) { 1213 const base::string16 suffix( 1214 ShellUtil::GetCurrentInstallationSuffix(browser_dist, chrome_exe)); 1215 1216 // Remove all Chrome registration keys. 1217 // Registration data is put in HKCU for both system level and user level 1218 // installs. 1219 DeleteChromeRegistrationKeys(installer_state, browser_dist, 1220 HKEY_CURRENT_USER, suffix, &ret); 1221 1222 // If the user's Chrome is registered with a suffix: it is possible that old 1223 // unsuffixed registrations were left in HKCU (e.g. if this install was 1224 // previously installed with no suffix in HKCU (old suffix rules if the user 1225 // is not an admin (or declined UAC at first run)) and later had to be 1226 // suffixed when fully registered in HKLM (e.g. when later making Chrome 1227 // default through the UI)). 1228 // Remove remaining HKCU entries with no suffix if any. 1229 if (!suffix.empty()) { 1230 DeleteChromeRegistrationKeys(installer_state, browser_dist, 1231 HKEY_CURRENT_USER, base::string16(), &ret); 1232 1233 // For similar reasons it is possible in very few installs (from 1234 // 21.0.1180.0 and fixed shortly after) to be installed with the new-style 1235 // suffix, but have some old-style suffix registrations left behind. 1236 base::string16 old_style_suffix; 1237 if (ShellUtil::GetOldUserSpecificRegistrySuffix(&old_style_suffix) && 1238 suffix != old_style_suffix) { 1239 DeleteChromeRegistrationKeys(installer_state, browser_dist, 1240 HKEY_CURRENT_USER, old_style_suffix, &ret); 1241 } 1242 } 1243 1244 // Chrome is registered in HKLM for all system-level installs and for 1245 // user-level installs for which Chrome has been made the default browser. 1246 // Always remove the HKLM registration for system-level installs. For 1247 // user-level installs, only remove it if both: 1) this uninstall isn't a 1248 // self destruct following the installation of a system-level Chrome 1249 // (because the system-level Chrome owns the HKLM registration now), and 2) 1250 // this user has made Chrome their default browser (i.e. has shell 1251 // integration entries registered with |suffix| (note: |suffix| will be the 1252 // empty string if required as it is obtained by 1253 // GetCurrentInstallationSuffix() above)). 1254 // TODO(gab): This can still leave parts of a suffixed install behind. To be 1255 // able to remove them we would need to be able to remove only suffixed 1256 // entries (as it is now some of the registry entries (e.g. App Paths) are 1257 // unsuffixed; thus removing suffixed installs is prohibited in HKLM if 1258 // !|remove_all| for now). 1259 if (installer_state.system_install() || 1260 (remove_all && 1261 ShellUtil::QuickIsChromeRegisteredInHKLM( 1262 browser_dist, chrome_exe, suffix))) { 1263 DeleteChromeRegistrationKeys(installer_state, browser_dist, 1264 HKEY_LOCAL_MACHINE, suffix, &ret); 1265 } 1266 1267 ProcessDelegateExecuteWorkItems(installer_state, product); 1268 1269 ProcessOnOsUpgradeWorkItems(installer_state, product); 1270 1271 UninstallActiveSetupEntries(installer_state, product); 1272 1273 UninstallFirewallRules(browser_dist, base::FilePath(chrome_exe)); 1274 1275 RemoveBlacklistState(); 1276 1277 // Notify the shell that associations have changed since Chrome was likely 1278 // unregistered. 1279 SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL); 1280 1281 // TODO(huangs): Implement actual migration code and remove the hack below. 1282 // Remove the "shadow" App Launcher registry keys. 1283 // TODO(hunags): Management of this key should not be conditional on 1284 // multi-install since the app list feature is available regardless of how 1285 // chrome is installed. 1286 if (installer_state.is_multi_install()) { 1287 // Delete the "shadow" keys. 1288 BrowserDistribution* shadow_app_launcher_dist = 1289 BrowserDistribution::GetSpecificDistribution( 1290 BrowserDistribution::CHROME_APP_HOST); 1291 InstallUtil::DeleteRegistryKey( 1292 reg_root, 1293 shadow_app_launcher_dist->GetVersionKey(), 1294 KEY_WOW64_32KEY); 1295 } 1296 } 1297 1298 if (installer_state.is_multi_install()) 1299 ProcessGoogleUpdateItems(original_state, installer_state, product); 1300 1301 // Get the state of the installed product (if any) 1302 const ProductState* product_state = 1303 original_state.GetProductState(installer_state.system_install(), 1304 browser_dist->GetType()); 1305 1306 // Delete shared registry keys as well (these require admin rights) if 1307 // remove_all option is specified. 1308 if (remove_all) { 1309 if (!InstallUtil::IsChromeSxSProcess() && is_chrome) { 1310 // Delete media player registry key that exists only in HKLM. 1311 // We don't delete this key in SxS uninstall or Chrome Frame uninstall 1312 // as we never set the key for those products. 1313 base::string16 reg_path(installer::kMediaPlayerRegPath); 1314 reg_path.push_back(base::FilePath::kSeparators[0]); 1315 reg_path.append(installer::kChromeExe); 1316 InstallUtil::DeleteRegistryKey(HKEY_LOCAL_MACHINE, reg_path, 1317 WorkItem::kWow64Default); 1318 } 1319 1320 // Unregister any dll servers that we may have registered for this 1321 // product. 1322 if (product_state != NULL) { 1323 std::vector<base::FilePath> com_dll_list; 1324 product.AddComDllList(&com_dll_list); 1325 base::FilePath dll_folder = installer_state.target_path().AppendASCII( 1326 product_state->version().GetString()); 1327 1328 scoped_ptr<WorkItemList> unreg_work_item_list( 1329 WorkItem::CreateWorkItemList()); 1330 1331 AddRegisterComDllWorkItems(dll_folder, 1332 com_dll_list, 1333 installer_state.system_install(), 1334 false, // Unregister 1335 true, // May fail 1336 unreg_work_item_list.get()); 1337 unreg_work_item_list->Do(); 1338 } 1339 1340 if (product.is_chrome_frame()) 1341 ProcessIELowRightsPolicyWorkItems(installer_state); 1342 } 1343 1344 // Close any Chrome Frame helper processes that may be running. 1345 if (product.is_chrome_frame()) { 1346 VLOG(1) << "Closing the Chrome Frame helper process"; 1347 CloseChromeFrameHelperProcess(); 1348 } 1349 1350 if (product_state == NULL) 1351 return installer::UNINSTALL_SUCCESSFUL; 1352 1353 // Finally delete all the files from Chrome folder after moving setup.exe 1354 // and the user's Local State to a temp location. 1355 bool delete_profile = ShouldDeleteProfile(installer_state, cmd_line, status, 1356 product); 1357 ret = installer::UNINSTALL_SUCCESSFUL; 1358 1359 // When deleting files, we must make sure that we're either a "single" 1360 // (aka non-multi) installation or we are the Chrome Binaries. 1361 1362 base::FilePath user_data_dir(GetUserDataDir(product)); 1363 base::FilePath backup_state_file; 1364 if (!user_data_dir.empty()) { 1365 backup_state_file = BackupLocalStateFile(user_data_dir); 1366 } else { 1367 LOG(ERROR) << "Could not retrieve the user's profile directory."; 1368 ret = installer::UNINSTALL_FAILED; 1369 delete_profile = false; 1370 } 1371 1372 if (product.is_chrome_app_host()) { 1373 DeleteAppHostFilesAndFolders(installer_state, product_state->version()); 1374 } else if (!installer_state.is_multi_install() || 1375 product.is_chrome_binaries()) { 1376 DeleteResult delete_result = DeleteChromeFilesAndFolders( 1377 installer_state, base::MakeAbsoluteFilePath(setup_exe)); 1378 if (delete_result == DELETE_FAILED) { 1379 ret = installer::UNINSTALL_FAILED; 1380 } else if (delete_result == DELETE_REQUIRES_REBOOT) { 1381 ret = installer::UNINSTALL_REQUIRES_REBOOT; 1382 } 1383 } 1384 1385 if (delete_profile) 1386 DeleteUserDataDir(user_data_dir, product.is_chrome_frame()); 1387 1388 if (!force_uninstall) { 1389 VLOG(1) << "Uninstallation complete. Launching post-uninstall operations."; 1390 browser_dist->DoPostUninstallOperations(product_state->version(), 1391 backup_state_file, distribution_data); 1392 } 1393 1394 // Try and delete the preserved local state once the post-install 1395 // operations are complete. 1396 if (!backup_state_file.empty()) 1397 base::DeleteFile(backup_state_file, false); 1398 1399 return ret; 1400} 1401 1402void CleanUpInstallationDirectoryAfterUninstall( 1403 const InstallationState& original_state, 1404 const InstallerState& installer_state, 1405 const base::FilePath& setup_exe, 1406 InstallStatus* uninstall_status) { 1407 if (*uninstall_status != UNINSTALL_SUCCESSFUL && 1408 *uninstall_status != UNINSTALL_REQUIRES_REBOOT) { 1409 return; 1410 } 1411 const base::FilePath target_path(installer_state.target_path()); 1412 if (target_path.empty()) { 1413 LOG(ERROR) << "No installation destination path."; 1414 *uninstall_status = UNINSTALL_FAILED; 1415 return; 1416 } 1417 if (!target_path.IsParent(base::MakeAbsoluteFilePath(setup_exe))) { 1418 VLOG(1) << "setup.exe is not in target path. Skipping installer cleanup."; 1419 return; 1420 } 1421 base::FilePath install_directory(setup_exe.DirName()); 1422 1423 bool remove_setup = true; 1424 bool remove_archive = true; 1425 CheckShouldRemoveSetupAndArchive(original_state, installer_state, 1426 &remove_setup, &remove_archive); 1427 if (!remove_archive) 1428 return; 1429 1430 if (remove_setup) { 1431 // In order to be able to remove the folder in which we're running, we 1432 // need to move setup.exe out of the install folder. 1433 // TODO(tommi): What if the temp folder is on a different volume? 1434 MoveSetupOutOfInstallFolder(installer_state, setup_exe); 1435 } 1436 1437 // Remove files from "...\<product>\Application\<version>\Installer" 1438 if (!RemoveInstallerFiles(install_directory, remove_setup)) { 1439 *uninstall_status = UNINSTALL_FAILED; 1440 return; 1441 } 1442 1443 if (!remove_setup) 1444 return; 1445 1446 // Try to remove the empty directory hierarchy. 1447 1448 // Delete "...\<product>\Application\<version>\Installer" 1449 if (DeleteEmptyDir(install_directory) != DELETE_SUCCEEDED) { 1450 *uninstall_status = UNINSTALL_FAILED; 1451 return; 1452 } 1453 1454 // Delete "...\<product>\Application\<version>" 1455 DeleteResult delete_result = DeleteEmptyDir(install_directory.DirName()); 1456 if (delete_result == DELETE_FAILED || 1457 (delete_result == DELETE_NOT_EMPTY && 1458 *uninstall_status != UNINSTALL_REQUIRES_REBOOT)) { 1459 *uninstall_status = UNINSTALL_FAILED; 1460 return; 1461 } 1462 1463 if (*uninstall_status == UNINSTALL_REQUIRES_REBOOT) { 1464 // Delete the Application directory at reboot if empty. 1465 ScheduleFileSystemEntityForDeletion(target_path); 1466 1467 // If we need a reboot to continue, schedule the parent directories for 1468 // deletion unconditionally. If they are not empty, the session manager 1469 // will not delete them on reboot. 1470 ScheduleParentAndGrandparentForDeletion(target_path); 1471 } else if (DeleteChromeDirectoriesIfEmpty(target_path) == DELETE_FAILED) { 1472 *uninstall_status = UNINSTALL_FAILED; 1473 } 1474} 1475 1476} // namespace installer 1477