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 declares util functions for setup project. 6 7 #include "chrome/installer/setup/setup_util.h" 8 9 #include <windows.h> 10 11 #include "base/command_line.h" 12 #include "base/file_util.h" 13 #include "base/files/file_enumerator.h" 14 #include "base/files/file_path.h" 15 #include "base/logging.h" 16 #include "base/process/kill.h" 17 #include "base/process/launch.h" 18 #include "base/process/process_handle.h" 19 #include "base/strings/string_util.h" 20 #include "base/version.h" 21 #include "base/win/registry.h" 22 #include "base/win/windows_version.h" 23 #include "chrome/installer/setup/setup_constants.h" 24 #include "chrome/installer/util/copy_tree_work_item.h" 25 #include "chrome/installer/util/google_update_constants.h" 26 #include "chrome/installer/util/installation_state.h" 27 #include "chrome/installer/util/installer_state.h" 28 #include "chrome/installer/util/master_preferences.h" 29 #include "chrome/installer/util/util_constants.h" 30 #include "chrome/installer/util/work_item.h" 31 #include "courgette/courgette.h" 32 #include "courgette/third_party/bsdiff.h" 33 #include "third_party/bspatch/mbspatch.h" 34 35 namespace installer { 36 37 namespace { 38 39 // Launches |setup_exe| with |command_line|, save --install-archive and its 40 // value if present. Returns false if the process failed to launch. Otherwise, 41 // waits indefinitely for it to exit and populates |exit_code| as expected. On 42 // the off chance that waiting itself fails, |exit_code| is set to 43 // WAIT_FOR_EXISTING_FAILED. 44 bool LaunchAndWaitForExistingInstall(const base::FilePath& setup_exe, 45 const CommandLine& command_line, 46 int* exit_code) { 47 DCHECK(exit_code); 48 CommandLine new_cl(setup_exe); 49 50 // Copy over all switches but --install-archive. 51 CommandLine::SwitchMap switches(command_line.GetSwitches()); 52 switches.erase(switches::kInstallArchive); 53 for (CommandLine::SwitchMap::const_iterator i = switches.begin(); 54 i != switches.end(); ++i) { 55 if (i->second.empty()) 56 new_cl.AppendSwitch(i->first); 57 else 58 new_cl.AppendSwitchNative(i->first, i->second); 59 } 60 61 // Copy over all arguments. 62 CommandLine::StringVector args(command_line.GetArgs()); 63 for (CommandLine::StringVector::const_iterator i = args.begin(); 64 i != args.end(); ++i) { 65 new_cl.AppendArgNative(*i); 66 } 67 68 // Launch the process and wait for it to exit. 69 VLOG(1) << "Launching existing installer with command: " 70 << new_cl.GetCommandLineString(); 71 base::ProcessHandle handle = INVALID_HANDLE_VALUE; 72 if (!base::LaunchProcess(new_cl, base::LaunchOptions(), &handle)) { 73 PLOG(ERROR) << "Failed to launch existing installer with command: " 74 << new_cl.GetCommandLineString(); 75 return false; 76 } 77 if (!base::WaitForExitCode(handle, exit_code)) { 78 PLOG(DFATAL) << "Failed to get exit code from existing installer"; 79 *exit_code = WAIT_FOR_EXISTING_FAILED; 80 } else { 81 VLOG(1) << "Existing installer returned exit code " << *exit_code; 82 } 83 return true; 84 } 85 86 // Returns true if product |type| cam be meaningfully installed without the 87 // --multi-install flag. 88 bool SupportsSingleInstall(BrowserDistribution::Type type) { 89 return (type == BrowserDistribution::CHROME_BROWSER || 90 type == BrowserDistribution::CHROME_FRAME); 91 } 92 93 } // namespace 94 95 int CourgettePatchFiles(const base::FilePath& src, 96 const base::FilePath& patch, 97 const base::FilePath& dest) { 98 VLOG(1) << "Applying Courgette patch " << patch.value() 99 << " to file " << src.value() 100 << " and generating file " << dest.value(); 101 102 if (src.empty() || patch.empty() || dest.empty()) 103 return installer::PATCH_INVALID_ARGUMENTS; 104 105 const courgette::Status patch_status = 106 courgette::ApplyEnsemblePatch(src.value().c_str(), 107 patch.value().c_str(), 108 dest.value().c_str()); 109 const int exit_code = (patch_status != courgette::C_OK) ? 110 static_cast<int>(patch_status) + kCourgetteErrorOffset : 0; 111 112 LOG_IF(ERROR, exit_code) 113 << "Failed to apply Courgette patch " << patch.value() 114 << " to file " << src.value() << " and generating file " << dest.value() 115 << ". err=" << exit_code; 116 117 return exit_code; 118 } 119 120 int BsdiffPatchFiles(const base::FilePath& src, 121 const base::FilePath& patch, 122 const base::FilePath& dest) { 123 VLOG(1) << "Applying bsdiff patch " << patch.value() 124 << " to file " << src.value() 125 << " and generating file " << dest.value(); 126 127 if (src.empty() || patch.empty() || dest.empty()) 128 return installer::PATCH_INVALID_ARGUMENTS; 129 130 const int patch_status = courgette::ApplyBinaryPatch(src, patch, dest); 131 const int exit_code = patch_status != OK ? 132 patch_status + kBsdiffErrorOffset : 0; 133 134 LOG_IF(ERROR, exit_code) 135 << "Failed to apply bsdiff patch " << patch.value() 136 << " to file " << src.value() << " and generating file " << dest.value() 137 << ". err=" << exit_code; 138 139 return exit_code; 140 } 141 142 Version* GetMaxVersionFromArchiveDir(const base::FilePath& chrome_path) { 143 VLOG(1) << "Looking for Chrome version folder under " << chrome_path.value(); 144 base::FileEnumerator version_enum(chrome_path, false, 145 base::FileEnumerator::DIRECTORIES); 146 // TODO(tommi): The version directory really should match the version of 147 // setup.exe. To begin with, we should at least DCHECK that that's true. 148 149 scoped_ptr<Version> max_version(new Version("0.0.0.0")); 150 bool version_found = false; 151 152 while (!version_enum.Next().empty()) { 153 base::FileEnumerator::FileInfo find_data = version_enum.GetInfo(); 154 VLOG(1) << "directory found: " << find_data.GetName().value(); 155 156 scoped_ptr<Version> found_version( 157 new Version(WideToASCII(find_data.GetName().value()))); 158 if (found_version->IsValid() && 159 found_version->CompareTo(*max_version.get()) > 0) { 160 max_version.reset(found_version.release()); 161 version_found = true; 162 } 163 } 164 165 return (version_found ? max_version.release() : NULL); 166 } 167 168 base::FilePath FindArchiveToPatch(const InstallationState& original_state, 169 const InstallerState& installer_state) { 170 // Check based on the version number advertised to Google Update, since that 171 // is the value used to select a specific differential update. If an archive 172 // can't be found using that, fallback to using the newest version present. 173 base::FilePath patch_source; 174 const ProductState* product = 175 original_state.GetProductState(installer_state.system_install(), 176 installer_state.state_type()); 177 if (product) { 178 patch_source = installer_state.GetInstallerDirectory(product->version()) 179 .Append(installer::kChromeArchive); 180 if (base::PathExists(patch_source)) 181 return patch_source; 182 } 183 scoped_ptr<Version> version( 184 installer::GetMaxVersionFromArchiveDir(installer_state.target_path())); 185 if (version) { 186 patch_source = installer_state.GetInstallerDirectory(*version) 187 .Append(installer::kChromeArchive); 188 if (base::PathExists(patch_source)) 189 return patch_source; 190 } 191 return base::FilePath(); 192 } 193 194 bool DeleteFileFromTempProcess(const base::FilePath& path, 195 uint32 delay_before_delete_ms) { 196 static const wchar_t kRunDll32Path[] = 197 L"%SystemRoot%\\System32\\rundll32.exe"; 198 wchar_t rundll32[MAX_PATH]; 199 DWORD size = 200 ExpandEnvironmentStrings(kRunDll32Path, rundll32, arraysize(rundll32)); 201 if (!size || size >= MAX_PATH) 202 return false; 203 204 STARTUPINFO startup = { sizeof(STARTUPINFO) }; 205 PROCESS_INFORMATION pi = {0}; 206 BOOL ok = ::CreateProcess(NULL, rundll32, NULL, NULL, FALSE, CREATE_SUSPENDED, 207 NULL, NULL, &startup, &pi); 208 if (ok) { 209 // We use the main thread of the new process to run: 210 // Sleep(delay_before_delete_ms); 211 // DeleteFile(path); 212 // ExitProcess(0); 213 // This runs before the main routine of the process runs, so it doesn't 214 // matter much which executable we choose except that we don't want to 215 // use e.g. a console app that causes a window to be created. 216 size = (path.value().length() + 1) * sizeof(path.value()[0]); 217 void* mem = ::VirtualAllocEx(pi.hProcess, NULL, size, MEM_COMMIT, 218 PAGE_READWRITE); 219 if (mem) { 220 SIZE_T written = 0; 221 ::WriteProcessMemory( 222 pi.hProcess, mem, path.value().c_str(), 223 (path.value().size() + 1) * sizeof(path.value()[0]), &written); 224 HMODULE kernel32 = ::GetModuleHandle(L"kernel32.dll"); 225 PAPCFUNC sleep = reinterpret_cast<PAPCFUNC>( 226 ::GetProcAddress(kernel32, "Sleep")); 227 PAPCFUNC delete_file = reinterpret_cast<PAPCFUNC>( 228 ::GetProcAddress(kernel32, "DeleteFileW")); 229 PAPCFUNC exit_process = reinterpret_cast<PAPCFUNC>( 230 ::GetProcAddress(kernel32, "ExitProcess")); 231 if (!sleep || !delete_file || !exit_process) { 232 NOTREACHED(); 233 ok = FALSE; 234 } else { 235 ::QueueUserAPC(sleep, pi.hThread, delay_before_delete_ms); 236 ::QueueUserAPC(delete_file, pi.hThread, 237 reinterpret_cast<ULONG_PTR>(mem)); 238 ::QueueUserAPC(exit_process, pi.hThread, 0); 239 ::ResumeThread(pi.hThread); 240 } 241 } else { 242 PLOG(ERROR) << "VirtualAllocEx"; 243 ::TerminateProcess(pi.hProcess, ~0); 244 } 245 ::CloseHandle(pi.hThread); 246 ::CloseHandle(pi.hProcess); 247 } 248 249 return ok != FALSE; 250 } 251 252 bool GetExistingHigherInstaller( 253 const InstallationState& original_state, 254 bool system_install, 255 const Version& installer_version, 256 base::FilePath* setup_exe) { 257 DCHECK(setup_exe); 258 bool trying_single_browser = false; 259 const ProductState* existing_state = 260 original_state.GetProductState(system_install, 261 BrowserDistribution::CHROME_BINARIES); 262 if (!existing_state) { 263 // The binaries aren't installed, but perhaps a single-install Chrome is. 264 trying_single_browser = true; 265 existing_state = 266 original_state.GetProductState(system_install, 267 BrowserDistribution::CHROME_BROWSER); 268 } 269 270 if (!existing_state || 271 existing_state->version().CompareTo(installer_version) <= 0) { 272 return false; 273 } 274 275 *setup_exe = existing_state->GetSetupPath(); 276 277 VLOG_IF(1, !setup_exe->empty()) << "Found a higher version of " 278 << (trying_single_browser ? "single-install Chrome." 279 : "multi-install Chrome binaries."); 280 281 return !setup_exe->empty(); 282 } 283 284 bool DeferToExistingInstall(const base::FilePath& setup_exe, 285 const CommandLine& command_line, 286 const InstallerState& installer_state, 287 const base::FilePath& temp_path, 288 InstallStatus* install_status) { 289 // Copy a master_preferences file if there is one. 290 base::FilePath prefs_source_path(command_line.GetSwitchValueNative( 291 switches::kInstallerData)); 292 base::FilePath prefs_dest_path(installer_state.target_path().AppendASCII( 293 kDefaultMasterPrefs)); 294 scoped_ptr<WorkItem> copy_prefs(WorkItem::CreateCopyTreeWorkItem( 295 prefs_source_path, prefs_dest_path, temp_path, WorkItem::ALWAYS, 296 base::FilePath())); 297 // There's nothing to rollback if the copy fails, so punt if so. 298 if (!copy_prefs->Do()) 299 copy_prefs.reset(); 300 301 int exit_code = 0; 302 if (!LaunchAndWaitForExistingInstall(setup_exe, command_line, &exit_code)) { 303 if (copy_prefs) 304 copy_prefs->Rollback(); 305 return false; 306 } 307 *install_status = static_cast<InstallStatus>(exit_code); 308 return true; 309 } 310 311 // There are 4 disjoint cases => return values {false,true}: 312 // (1) Product is being uninstalled => false. 313 // (2) Product is being installed => true. 314 // (3) Current operation ignores product, product is absent => false. 315 // (4) Current operation ignores product, product is present => true. 316 bool WillProductBePresentAfterSetup( 317 const installer::InstallerState& installer_state, 318 const installer::InstallationState& machine_state, 319 BrowserDistribution::Type type) { 320 DCHECK(SupportsSingleInstall(type) || installer_state.is_multi_install()); 321 322 const ProductState* product_state = 323 machine_state.GetProductState(installer_state.system_install(), type); 324 325 // Determine if the product is present prior to the current operation. 326 bool is_present = (product_state != NULL); 327 bool is_uninstall = installer_state.operation() == InstallerState::UNINSTALL; 328 329 // Determine if current operation affects the product. 330 const Product* product = installer_state.FindProduct(type); 331 bool is_affected = (product != NULL); 332 333 // Decide among {(1),(2),(3),(4)}. 334 return is_affected ? !is_uninstall : is_present; 335 } 336 337 bool AdjustProcessPriority() { 338 if (base::win::GetVersion() >= base::win::VERSION_VISTA) { 339 DWORD priority_class = ::GetPriorityClass(::GetCurrentProcess()); 340 if (priority_class == 0) { 341 PLOG(WARNING) << "Failed to get the process's priority class."; 342 } else if (priority_class == BELOW_NORMAL_PRIORITY_CLASS || 343 priority_class == IDLE_PRIORITY_CLASS) { 344 BOOL result = ::SetPriorityClass(::GetCurrentProcess(), 345 PROCESS_MODE_BACKGROUND_BEGIN); 346 PLOG_IF(WARNING, !result) << "Failed to enter background mode."; 347 return !!result; 348 } 349 } 350 return false; 351 } 352 353 void MigrateGoogleUpdateStateMultiToSingle( 354 bool system_level, 355 BrowserDistribution::Type to_migrate, 356 const installer::InstallationState& machine_state) { 357 const HKEY root = system_level ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER; 358 const ProductState* product = NULL; 359 BrowserDistribution* dist = NULL; 360 LONG result = ERROR_SUCCESS; 361 base::win::RegKey state_key; 362 363 Product product_to_migrate( 364 BrowserDistribution::GetSpecificDistribution(to_migrate)); 365 366 // Copy usagestats from the binaries to the product's ClientState key. 367 product = machine_state.GetProductState(system_level, 368 BrowserDistribution::CHROME_BINARIES); 369 DWORD usagestats = 0; 370 if (product && product->GetUsageStats(&usagestats)) { 371 dist = product_to_migrate.distribution(); 372 result = state_key.Open(root, dist->GetStateKey().c_str(), 373 KEY_SET_VALUE); 374 if (result != ERROR_SUCCESS) { 375 LOG(ERROR) << "Failed opening ClientState key for " 376 << dist->GetDisplayName() << " to migrate usagestats."; 377 } else { 378 state_key.WriteValue(google_update::kRegUsageStatsField, usagestats); 379 } 380 } 381 382 // Remove the migrating product from the "ap" value of other multi-install 383 // products. 384 for (int i = 0; i < BrowserDistribution::NUM_TYPES; ++i) { 385 BrowserDistribution::Type type = 386 static_cast<BrowserDistribution::Type>(i); 387 if (type == to_migrate) 388 continue; 389 product = machine_state.GetProductState(system_level, type); 390 if (product && product->is_multi_install()) { 391 installer::ChannelInfo channel_info; 392 dist = BrowserDistribution::GetSpecificDistribution(type); 393 result = state_key.Open(root, dist->GetStateKey().c_str(), 394 KEY_QUERY_VALUE | KEY_SET_VALUE); 395 if (result == ERROR_SUCCESS && 396 channel_info.Initialize(state_key) && 397 product_to_migrate.SetChannelFlags(false, &channel_info)) { 398 VLOG(1) << "Moving " << dist->GetDisplayName() 399 << " to channel: " << channel_info.value(); 400 channel_info.Write(&state_key); 401 } 402 } 403 } 404 405 // Remove -multi, all product modifiers, and everything else but the channel 406 // name from the "ap" value of the product to migrate. 407 dist = product_to_migrate.distribution(); 408 result = state_key.Open(root, dist->GetStateKey().c_str(), 409 KEY_QUERY_VALUE | KEY_SET_VALUE); 410 if (result == ERROR_SUCCESS) { 411 installer::ChannelInfo channel_info; 412 if (!channel_info.Initialize(state_key)) { 413 LOG(ERROR) << "Failed reading " << dist->GetDisplayName() 414 << " channel info."; 415 } else if (channel_info.RemoveAllModifiersAndSuffixes()) { 416 VLOG(1) << "Moving " << dist->GetDisplayName() 417 << " to channel: " << channel_info.value(); 418 channel_info.Write(&state_key); 419 } 420 } 421 } 422 423 bool IsUninstallSuccess(InstallStatus install_status) { 424 // The following status values represent failed uninstalls: 425 // 15: CHROME_NOT_INSTALLED 426 // 20: UNINSTALL_FAILED 427 // 21: UNINSTALL_CANCELLED 428 return (install_status == UNINSTALL_SUCCESSFUL || 429 install_status == UNINSTALL_REQUIRES_REBOOT); 430 } 431 432 bool ContainsUnsupportedSwitch(const CommandLine& cmd_line) { 433 static const char* const kLegacySwitches[] = { 434 // Chrome Frame ready-mode. 435 "ready-mode", 436 "ready-mode-opt-in", 437 "ready-mode-temp-opt-out", 438 "ready-mode-end-temp-opt-out", 439 // Chrome Frame quick-enable. 440 "quick-enable-cf", 441 // Installation of Chrome Frame. 442 "chrome-frame", 443 "migrate-chrome-frame", 444 }; 445 for (size_t i = 0; i < arraysize(kLegacySwitches); ++i) { 446 if (cmd_line.HasSwitch(kLegacySwitches[i])) 447 return true; 448 } 449 return false; 450 } 451 452 ScopedTokenPrivilege::ScopedTokenPrivilege(const wchar_t* privilege_name) 453 : is_enabled_(false) { 454 HANDLE temp_handle; 455 if (!::OpenProcessToken(::GetCurrentProcess(), 456 TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, 457 &temp_handle)) { 458 return; 459 } 460 token_.Set(temp_handle); 461 462 LUID privilege_luid; 463 if (!::LookupPrivilegeValue(NULL, privilege_name, &privilege_luid)) { 464 token_.Close(); 465 return; 466 } 467 468 // Adjust the token's privileges to enable |privilege_name|. If this privilege 469 // was already enabled, |previous_privileges_|.PrivilegeCount will be set to 0 470 // and we then know not to disable this privilege upon destruction. 471 TOKEN_PRIVILEGES tp; 472 tp.PrivilegeCount = 1; 473 tp.Privileges[0].Luid = privilege_luid; 474 tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 475 DWORD return_length; 476 if (!::AdjustTokenPrivileges(token_, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), 477 &previous_privileges_, &return_length)) { 478 token_.Close(); 479 return; 480 } 481 482 is_enabled_ = true; 483 } 484 485 ScopedTokenPrivilege::~ScopedTokenPrivilege() { 486 if (is_enabled_ && previous_privileges_.PrivilegeCount != 0) { 487 ::AdjustTokenPrivileges(token_, FALSE, &previous_privileges_, 488 sizeof(TOKEN_PRIVILEGES), NULL, NULL); 489 } 490 } 491 492 } // namespace installer 493
