| // Copyright 2012 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "sandbox/policy/win/sandbox_win.h" |
| |
| #include <stddef.h> |
| #include <windows.h> |
| #include <winternl.h> |
| |
| #include <map> |
| #include <sstream> |
| #include <string> |
| #include <string_view> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/command_line.h" |
| #include "base/containers/contains.h" |
| #include "base/feature_list.h" |
| #include "base/files/file_path.h" |
| #include "base/files/file_util.h" |
| #include "base/hash/hash.h" |
| #include "base/hash/sha1.h" |
| #include "base/logging.h" |
| #include "base/metrics/field_trial.h" |
| #include "base/metrics/histogram_functions.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/no_destructor.h" |
| #include "base/path_service.h" |
| #include "base/process/launch.h" |
| #include "base/process/process.h" |
| #include "base/strings/strcat.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_split.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/string_util_win.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/system/sys_info.h" |
| #include "base/task/sequenced_task_runner.h" |
| #include "base/time/time.h" |
| #include "base/timer/elapsed_timer.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/win/iat_patch_function.h" |
| #include "base/win/scoped_handle.h" |
| #include "base/win/scoped_process_information.h" |
| #include "base/win/security_util.h" |
| #include "base/win/sid.h" |
| #include "base/win/win_util.h" |
| #include "base/win/windows_version.h" |
| #include "build/build_config.h" |
| #include "components/services/screen_ai/buildflags/buildflags.h" |
| #include "ppapi/buildflags/buildflags.h" |
| #include "printing/buildflags/buildflags.h" |
| #include "sandbox/features.h" |
| #include "sandbox/policy/features.h" |
| #include "sandbox/policy/mojom/sandbox.mojom.h" |
| #include "sandbox/policy/sandbox_type.h" |
| #include "sandbox/policy/switches.h" |
| #include "sandbox/policy/win/lpac_capability.h" |
| #include "sandbox/policy/win/sandbox_diagnostics.h" |
| #include "sandbox/win/src/app_container.h" |
| #include "sandbox/win/src/process_mitigations.h" |
| #include "sandbox/win/src/sandbox.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| |
| namespace sandbox { |
| namespace policy { |
| using sandbox::mojom::Sandbox; |
| |
| namespace { |
| |
| BrokerServices* g_broker_services = NULL; |
| |
| // The DLLs listed here are known (or under strong suspicion) of causing crashes |
| // when they are loaded in the renderer. Note: at runtime we generate short |
| // versions of the dll name only if the dll has an extension. |
| // For more information about how this list is generated, and how to get off |
| // of it, see: |
| // https://sites.google.com/a/chromium.org/dev/Home/third-party-developers |
| const wchar_t* const kTroublesomeDlls[] = { |
| L"adialhk.dll", // Kaspersky Internet Security. |
| L"acpiz.dll", // Unknown. |
| L"activedetect32.dll", // Lenovo One Key Theater (crbug.com/536056). |
| L"activedetect64.dll", // Lenovo One Key Theater (crbug.com/536056). |
| L"airfoilinject3.dll", // Airfoil. |
| L"akinsofthook32.dll", // Akinsoft Software Engineering. |
| L"assistant_x64.dll", // Unknown. |
| L"atcuf64.dll", // Bit Defender Internet Security x64. |
| L"avcuf64.dll", // Bit Defender Internet Security x64. |
| L"avgrsstx.dll", // AVG 8. |
| L"babylonchromepi.dll", // Babylon translator. |
| L"btkeyind.dll", // Widcomm Bluetooth. |
| L"cmcsyshk.dll", // CMC Internet Security. |
| L"cmsetac.dll", // Unknown (suspected malware). |
| L"cooliris.dll", // CoolIris. |
| L"cplushook.dll", // Unknown (suspected malware). |
| L"dockshellhook.dll", // Stardock Objectdock. |
| L"easyhook32.dll", // GDIPP and others. |
| L"easyhook64.dll", // Symantec BlueCoat and others. |
| L"esspd.dll", // Samsung Smart Security ESCORT. |
| L"googledesktopnetwork3.dll", // Google Desktop Search v5. |
| L"fwhook.dll", // PC Tools Firewall Plus. |
| L"guard64.dll", // Comodo Internet Security x64. |
| L"hookprocesscreation.dll", // Blumentals Program protector. |
| L"hookterminateapis.dll", // Blumentals and Cyberprinter. |
| L"hookprintapis.dll", // Cyberprinter. |
| L"imon.dll", // NOD32 Antivirus. |
| L"icatcdll.dll", // Samsung Smart Security ESCORT. |
| L"icdcnl.dll", // Samsung Smart Security ESCORT. |
| L"ioloHL.dll", // Iolo (System Mechanic). |
| L"kloehk.dll", // Kaspersky Internet Security. |
| L"lawenforcer.dll", // Spyware-Browser AntiSpyware (Spybro). |
| L"libdivx.dll", // DivX. |
| L"lvprcinj01.dll", // Logitech QuickCam. |
| L"madchook.dll", // Madshi (generic hooking library). |
| L"mdnsnsp.dll", // Bonjour. |
| L"moonsysh.dll", // Moon Secure Antivirus. |
| L"mpk.dll", // KGB Spy. |
| L"n64hooks.dll", // Neilsen//NetRatings NetSight. |
| L"npdivx32.dll", // DivX. |
| L"npggNT.des", // GameGuard 2008. |
| L"npggNT.dll", // GameGuard (older). |
| L"nphooks.dll", // Neilsen//NetRatings NetSight. |
| L"oawatch.dll", // Online Armor. |
| L"opls64.dll", // PremierOpinion and Relevant-Knowledge. |
| L"pastali32.dll", // PastaLeads. |
| L"pavhook.dll", // Panda Internet Security. |
| L"pavlsphook.dll", // Panda Antivirus. |
| L"pavshook.dll", // Panda Antivirus. |
| L"pavshookwow.dll", // Panda Antivirus. |
| L"pctavhook.dll", // PC Tools Antivirus. |
| L"pctgmhk.dll", // PC Tools Spyware Doctor. |
| L"picrmi32.dll", // PicRec. |
| L"picrmi64.dll", // PicRec. |
| L"pmls64.dll", // PremierOpinion and Relevant-Knowledge. |
| L"prls64.dll", // PremierOpinion and Relevant-Knowledge. |
| L"prntrack.dll", // Pharos Systems. |
| L"prochook.dll", // Unknown (GBill-Tools?) (crbug.com/974722). |
| L"protector.dll", // Unknown (suspected malware). |
| L"radhslib.dll", // Radiant Naomi Internet Filter. |
| L"radprlib.dll", // Radiant Naomi Internet Filter. |
| L"rapportnikko.dll", // Trustware Rapport. |
| L"rlhook.dll", // Trustware Bufferzone. |
| L"rlls.dll", // PremierOpinion and Relevant-Knowledge. |
| L"rlls64.dll", // PremierOpinion and Relevant-Knowledge. |
| L"rooksdol.dll", // Trustware Rapport. |
| L"rndlpepperbrowserrecordhelper.dll", // RealPlayer. |
| L"rpchromebrowserrecordhelper.dll", // RealPlayer. |
| L"r3hook.dll", // Kaspersky Internet Security. |
| L"sahook.dll", // McAfee Site Advisor. |
| L"sbrige.dll", // Unknown. |
| L"sc2hook.dll", // Supercopier 2. |
| L"sdhook32.dll", // Spybot - Search & Destroy Live Protection. |
| L"sguard.dll", // Iolo (System Guard). |
| L"smum32.dll", // Spyware Doctor version 6. |
| L"smumhook.dll", // Spyware Doctor version 5. |
| L"ssldivx.dll", // DivX. |
| L"syncor11.dll", // SynthCore Midi interface. |
| L"systools.dll", // Panda Antivirus. |
| L"tfwah.dll", // Threatfire (PC tools). |
| L"wblind.dll", // Stardock Object desktop. |
| L"wbhelp.dll", // Stardock Object desktop. |
| L"windowsapihookdll32.dll", // Lenovo One Key Theater (crbug.com/536056). |
| L"windowsapihookdll64.dll", // Lenovo One Key Theater (crbug.com/536056). |
| L"winstylerthemehelper.dll" // Tuneup utilities 2006. |
| }; |
| |
| // This is for finch. See also crbug.com/464430 for details. |
| BASE_FEATURE(kEnableCsrssLockdownFeature, |
| "EnableCsrssLockdown", |
| base::FEATURE_DISABLED_BY_DEFAULT); |
| |
| #if !defined(NACL_WIN64) |
| // Adds the policy rules to allow read-only access to the windows system fonts |
| // directory, and any subdirectories. |
| bool AddWindowsFontsDir(TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| base::FilePath directory; |
| if (!base::PathService::Get(base::DIR_WINDOWS_FONTS, &directory)) { |
| return false; |
| } |
| |
| ResultCode result = config->AllowFileAccess(FileSemantics::kAllowReadonly, |
| directory.value().c_str()); |
| if (result != SBOX_ALL_OK) |
| return false; |
| |
| std::wstring directory_str = directory.value() + L"\\*"; |
| result = config->AllowFileAccess(FileSemantics::kAllowReadonly, |
| directory_str.c_str()); |
| if (result != SBOX_ALL_OK) |
| return false; |
| |
| return true; |
| } |
| #endif // !defined(NACL_WIN64) |
| |
| // Return a mapping between the long and short names for all loaded modules in |
| // the current process. The mapping excludes modules which don't have a typical |
| // short name, e.g. EXAMPL~1.DLL. |
| std::map<std::wstring, std::wstring> GetShortNameModules() { |
| std::vector<HMODULE> modules; |
| if (!base::win::GetLoadedModulesSnapshot(::GetCurrentProcess(), &modules)) { |
| return {}; |
| } |
| std::map<std::wstring, std::wstring> names; |
| for (HMODULE module : modules) { |
| wchar_t path[MAX_PATH]; |
| DWORD sz = ::GetModuleFileNameW(module, path, std::size(path)); |
| if ((sz == std::size(path)) || (sz == 0)) { |
| continue; |
| } |
| base::FilePath module_path(path); |
| base::FilePath name = module_path.BaseName(); |
| if (name.RemoveExtension().value().size() > 8 || |
| name.Extension().size() > 4 || !base::Contains(name.value(), L"~")) { |
| continue; |
| } |
| base::FilePath fname = base::MakeLongFilePath(module_path); |
| names.insert_or_assign(base::ToLowerASCII(fname.BaseName().value()), |
| name.value()); |
| } |
| return names; |
| } |
| |
| // Add a block list DLL to a configuration |config| based on the name of the DLL |
| // passed as |module_name|. The DLL must be loaded in the current process. A |
| // mapping from long names to short names should also be passed in |modules| to |
| // attempt to map a long name to the actual loaded name, this can be initialized |
| // with a call to GetShortNameModules. |
| void BlocklistAddOneDll(const wchar_t* module_name, |
| const std::map<std::wstring, std::wstring>& modules, |
| TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| if (::GetModuleHandleW(module_name) != nullptr) { |
| config->AddDllToUnload(module_name); |
| DVLOG(1) << "dll to unload found: " << module_name; |
| } else { |
| auto short_name = modules.find(base::ToLowerASCII(module_name)); |
| if (short_name != modules.end()) { |
| config->AddDllToUnload(short_name->second.c_str()); |
| config->AddDllToUnload(module_name); |
| } |
| } |
| } |
| |
| DWORD GetSessionId() { |
| DWORD session_id; |
| CHECK(::ProcessIdToSessionId(::GetCurrentProcessId(), &session_id)); |
| return session_id; |
| } |
| |
| // Returns the object path prepended with the current logon session. |
| std::wstring PrependWindowsSessionPath(const wchar_t* object) { |
| // Cache this because it can't change after process creation. |
| static DWORD s_session_id = GetSessionId(); |
| return base::StrCat( |
| {L"\\Sessions\\", base::NumberToWString(s_session_id), object}); |
| } |
| |
| // Adds the generic config rules to a sandbox TargetConfig. |
| ResultCode AddGenericConfig(sandbox::TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| |
| // Add the policy for read-only PDB file access for stack traces. |
| #if !defined(OFFICIAL_BUILD) |
| base::FilePath exe; |
| if (!base::PathService::Get(base::FILE_EXE, &exe)) |
| return SBOX_ERROR_GENERIC; |
| base::FilePath pdb_path = exe.DirName().Append(L"*.pdb"); |
| { |
| ResultCode result = config->AllowFileAccess(FileSemantics::kAllowReadonly, |
| pdb_path.value().c_str()); |
| if (result != SBOX_ALL_OK) { |
| return result; |
| } |
| } |
| #endif |
| |
| #if defined(SANITIZER_COVERAGE) |
| DWORD coverage_dir_size = |
| ::GetEnvironmentVariable(L"SANITIZER_COVERAGE_DIR", NULL, 0); |
| if (coverage_dir_size == 0) { |
| LOG(WARNING) << "SANITIZER_COVERAGE_DIR was not set, coverage won't work."; |
| } else { |
| std::wstring coverage_dir; |
| wchar_t* coverage_dir_str = |
| base::WriteInto(&coverage_dir, coverage_dir_size); |
| coverage_dir_size = ::GetEnvironmentVariable( |
| L"SANITIZER_COVERAGE_DIR", coverage_dir_str, coverage_dir_size); |
| CHECK(coverage_dir.size() == coverage_dir_size); |
| base::FilePath sancov_path = |
| base::FilePath(coverage_dir).Append(L"*.sancov"); |
| { |
| ResultCode result = config->AllowFileAccess(FileSemantics::kAllowAny, |
| sancov_path.value().c_str()); |
| if (result != SBOX_ALL_OK) { |
| return result; |
| } |
| } |
| } |
| #endif |
| |
| std::map<std::wstring, std::wstring> modules = GetShortNameModules(); |
| // Adds policy rules for unloading the known dlls that cause Chrome to crash. |
| // Eviction of injected DLLs is done by the sandbox so that the injected |
| // module does not get a chance to execute any code. |
| for (int ix = 0; ix != std::size(kTroublesomeDlls); ++ix) |
| BlocklistAddOneDll(kTroublesomeDlls[ix], modules, config); |
| |
| return SBOX_ALL_OK; |
| } |
| |
| ResultCode AddDefaultConfigForSandboxedProcess(TargetConfig* config) { |
| // Prevents the renderers from manipulating low-integrity processes. |
| config->SetDelayedIntegrityLevel(INTEGRITY_LEVEL_UNTRUSTED); |
| ResultCode result = config->SetIntegrityLevel(INTEGRITY_LEVEL_LOW); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| // The initial token has to be restricted if the main token is restricted. |
| result = config->SetTokenLevel(USER_RESTRICTED_SAME_ACCESS, USER_LOCKDOWN); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| config->SetLockdownDefaultDacl(); |
| |
| result = config->AddKernelObjectToClose(L"File", L"\\Device\\DeviceApi"); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| config->SetDesktop(Desktop::kAlternateWinstation); |
| |
| if (base::FeatureList::IsEnabled( |
| sandbox::policy::features::kWinSboxZeroAppShim)) { |
| config->SetZeroAppShim(); |
| } |
| |
| return SBOX_ALL_OK; |
| } |
| |
| // This code is test only, and attempts to catch unsafe uses of |
| // DuplicateHandle() that copy privileged handles into sandboxed processes. |
| #if !defined(OFFICIAL_BUILD) && !defined(COMPONENT_BUILD) |
| base::win::IATPatchFunction& GetIATPatchFunctionHandle() { |
| static base::NoDestructor<base::win::IATPatchFunction> |
| iat_patch_duplicate_handle; |
| return *iat_patch_duplicate_handle; |
| } |
| |
| using DuplicateHandleFunctionPtr = decltype(::DuplicateHandle)*; |
| |
| DuplicateHandleFunctionPtr g_iat_orig_duplicate_handle; |
| |
| static const char* kDuplicateHandleWarning = |
| "You are attempting to duplicate a privileged handle into a sandboxed" |
| " process.\n Please contact security@chromium.org for assistance."; |
| |
| void CheckDuplicateHandle(HANDLE handle) { |
| // Get the object type (32 characters is safe; current max is 14). |
| BYTE buffer[sizeof(PUBLIC_OBJECT_TYPE_INFORMATION) + 32 * sizeof(wchar_t)]; |
| PPUBLIC_OBJECT_TYPE_INFORMATION type_info = |
| reinterpret_cast<PPUBLIC_OBJECT_TYPE_INFORMATION>(buffer); |
| ULONG size = sizeof(buffer); |
| NTSTATUS error = |
| ::NtQueryObject(handle, ObjectTypeInformation, type_info, size, &size); |
| CHECK(NT_SUCCESS(error)); |
| std::wstring_view type_name(type_info->TypeName.Buffer, |
| type_info->TypeName.Length / sizeof(wchar_t)); |
| |
| absl::optional<ACCESS_MASK> granted_access = |
| base::win::GetGrantedAccess(handle); |
| CHECK(granted_access.has_value()); |
| |
| CHECK(!(*granted_access & WRITE_DAC)) << kDuplicateHandleWarning; |
| |
| if (base::EqualsCaseInsensitiveASCII(type_name, L"Process")) { |
| const ACCESS_MASK kDangerousMask = |
| ~static_cast<DWORD>(PROCESS_QUERY_LIMITED_INFORMATION | SYNCHRONIZE); |
| CHECK(!(*granted_access & kDangerousMask)) << kDuplicateHandleWarning; |
| } |
| } |
| |
| BOOL WINAPI DuplicateHandlePatch(HANDLE source_process_handle, |
| HANDLE source_handle, |
| HANDLE target_process_handle, |
| LPHANDLE target_handle, |
| DWORD desired_access, |
| BOOL inherit_handle, |
| DWORD options) { |
| // Duplicate the handle so we get the final access mask. |
| if (!g_iat_orig_duplicate_handle(source_process_handle, source_handle, |
| target_process_handle, target_handle, |
| desired_access, inherit_handle, options)) |
| return FALSE; |
| |
| // We're not worried about broker handles or not crossing process boundaries. |
| if (source_process_handle == target_process_handle || |
| target_process_handle == ::GetCurrentProcess()) |
| return TRUE; |
| |
| // Only sandboxed children are placed in jobs, so just check them. |
| BOOL is_in_job = FALSE; |
| if (!::IsProcessInJob(target_process_handle, NULL, &is_in_job)) { |
| // We need a handle with permission to check the job object. |
| if (ERROR_ACCESS_DENIED == ::GetLastError()) { |
| HANDLE temp_handle; |
| CHECK(g_iat_orig_duplicate_handle( |
| ::GetCurrentProcess(), target_process_handle, ::GetCurrentProcess(), |
| &temp_handle, PROCESS_QUERY_INFORMATION, FALSE, 0)); |
| base::win::ScopedHandle process(temp_handle); |
| CHECK(::IsProcessInJob(process.Get(), NULL, &is_in_job)); |
| } |
| } |
| |
| if (is_in_job) { |
| // We never allow inheritable child handles. |
| CHECK(!inherit_handle) << kDuplicateHandleWarning; |
| |
| // Duplicate the handle again, to get the final permissions. |
| HANDLE temp_handle; |
| CHECK(g_iat_orig_duplicate_handle(target_process_handle, *target_handle, |
| ::GetCurrentProcess(), &temp_handle, 0, |
| FALSE, DUPLICATE_SAME_ACCESS)); |
| base::win::ScopedHandle handle(temp_handle); |
| |
| // Callers use CHECK macro to make sure we get the right stack. |
| CheckDuplicateHandle(handle.Get()); |
| } |
| |
| return TRUE; |
| } |
| #endif |
| |
| bool IsAppContainerEnabled() { |
| if (!sandbox::features::IsAppContainerSandboxSupported()) |
| return false; |
| |
| return base::FeatureList::IsEnabled(features::kRendererAppContainer); |
| } |
| |
| // Generate a unique sandbox AC profile for the appcontainer based on the SHA1 |
| // hash of the appcontainer_id. This does not need to be secure so using SHA1 |
| // isn't a security concern. |
| std::wstring GetAppContainerProfileName(const std::string& appcontainer_id, |
| Sandbox sandbox_type) { |
| std::string sandbox_base_name; |
| switch (sandbox_type) { |
| case Sandbox::kXrCompositing: |
| sandbox_base_name = std::string("cr.sb.xr"); |
| break; |
| case Sandbox::kGpu: |
| sandbox_base_name = std::string("cr.sb.gpu"); |
| break; |
| case Sandbox::kMediaFoundationCdm: |
| sandbox_base_name = std::string("cr.sb.cdm"); |
| break; |
| case Sandbox::kNetwork: |
| sandbox_base_name = std::string("cr.sb.net"); |
| break; |
| case Sandbox::kOnDeviceModelExecution: |
| sandbox_base_name = std::string("cr.sb.odm"); |
| break; |
| case Sandbox::kWindowsSystemProxyResolver: |
| sandbox_base_name = std::string("cr.sb.pxy"); |
| break; |
| default: |
| DCHECK(0); |
| } |
| |
| auto sha1 = base::SHA1HashString(appcontainer_id); |
| std::string profile_name = base::StrCat( |
| {sandbox_base_name, base::HexEncode(sha1.data(), sha1.size())}); |
| // CreateAppContainerProfile requires that the profile name is at most 64 |
| // characters but 50 on WCOS systems. The size of sha1 is a constant 40, |
| // so validate that the base names are sufficiently short that the total |
| // length is valid on all systems. |
| DCHECK_LE(profile_name.length(), 50U); |
| return base::UTF8ToWide(profile_name); |
| } |
| |
| void AddCapabilitiesFromString(AppContainer* container, |
| const std::wstring& caps) { |
| for (const std::wstring& cap : base::SplitString( |
| caps, L",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY)) { |
| container->AddCapability(cap.c_str()); |
| } |
| } |
| |
| ResultCode SetupAppContainerProfile(AppContainer* container, |
| const base::CommandLine& command_line, |
| Sandbox sandbox_type) { |
| if (sandbox_type != Sandbox::kGpu && |
| sandbox_type != Sandbox::kXrCompositing && |
| sandbox_type != Sandbox::kMediaFoundationCdm && |
| sandbox_type != Sandbox::kNetwork && |
| sandbox_type != Sandbox::kOnDeviceModelExecution && |
| sandbox_type != Sandbox::kWindowsSystemProxyResolver) { |
| return SBOX_ERROR_UNSUPPORTED; |
| } |
| |
| container->AddCapability(kLpacChromeInstallFiles); |
| container->AddCapability(kRegistryRead); |
| |
| if (sandbox_type == Sandbox::kGpu) { |
| container->AddImpersonationCapability(kChromeInstallFiles); |
| container->AddCapability(kLpacPnpNotifications); |
| AddCapabilitiesFromString( |
| container, |
| command_line.GetSwitchValueNative(switches::kAddGpuAppContainerCaps)); |
| container->SetEnableLowPrivilegeAppContainer( |
| base::FeatureList::IsEnabled(features::kGpuLPAC)); |
| } |
| |
| if (sandbox_type == Sandbox::kXrCompositing) { |
| container->AddCapability(kChromeInstallFiles); |
| container->AddCapability(kLpacPnpNotifications); |
| AddCapabilitiesFromString(container, command_line.GetSwitchValueNative( |
| switches::kAddXrAppContainerCaps)); |
| // Note: does not use LPAC. |
| } |
| |
| if (sandbox_type == Sandbox::kMediaFoundationCdm) { |
| // Please refer to the following design doc on why we add the capabilities: |
| // https://docs.google.com/document/d/19Y4Js5v3BlzA5uSuiVTvcvPNIOwmxcMSFJWtuc1A-w8/edit#heading=h.iqvhsrml3gl9 |
| container->AddCapability( |
| base::win::WellKnownCapability::kPrivateNetworkClientServer); |
| container->AddCapability(base::win::WellKnownCapability::kInternetClient); |
| container->AddCapability(kLpacCom); |
| container->AddCapability(kLpacIdentityServices); |
| container->AddCapability(kLpacMedia); |
| container->AddCapability(kLpacPnPNotifications); |
| container->AddCapability(kLpacServicesManagement); |
| container->AddCapability(kLpacSessionManagement); |
| container->AddCapability(kLpacAppExperience); |
| container->AddCapability(kLpacInstrumentation); |
| container->AddCapability(kLpacCryptoServices); |
| container->AddCapability(kLpacEnterprisePolicyChangeNotifications); |
| container->AddCapability(kMediaFoundationCdmFiles); |
| container->AddCapability(kMediaFoundationCdmData); |
| container->SetEnableLowPrivilegeAppContainer(true); |
| } |
| |
| if (sandbox_type == Sandbox::kNetwork) { |
| container->AddCapability( |
| base::win::WellKnownCapability::kPrivateNetworkClientServer); |
| container->AddCapability(base::win::WellKnownCapability::kInternetClient); |
| container->AddCapability( |
| base::win::WellKnownCapability::kEnterpriseAuthentication); |
| container->AddCapability(kLpacIdentityServices); |
| container->AddCapability(kLpacCryptoServices); |
| container->SetEnableLowPrivilegeAppContainer(base::FeatureList::IsEnabled( |
| features::kWinSboxNetworkServiceSandboxIsLPAC)); |
| } |
| |
| if (sandbox_type == Sandbox::kOnDeviceModelExecution) { |
| container->AddImpersonationCapability(kChromeInstallFiles); |
| container->AddCapability(kLpacPnpNotifications); |
| container->SetEnableLowPrivilegeAppContainer(true); |
| } |
| |
| if (sandbox_type == Sandbox::kWindowsSystemProxyResolver) { |
| container->AddCapability(base::win::WellKnownCapability::kInternetClient); |
| container->AddCapability(kLpacServicesManagement); |
| container->AddCapability(kLpacEnterprisePolicyChangeNotifications); |
| container->SetEnableLowPrivilegeAppContainer(true); |
| } |
| |
| return SBOX_ALL_OK; |
| } |
| |
| ResultCode GenerateConfigForSandboxedProcess(const base::CommandLine& cmd_line, |
| const std::string& process_type, |
| SandboxDelegate* delegate, |
| TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| |
| // Pre-startup mitigations. |
| MitigationFlags mitigations = |
| MITIGATION_HEAP_TERMINATE | MITIGATION_BOTTOM_UP_ASLR | MITIGATION_DEP | |
| MITIGATION_DEP_NO_ATL_THUNK | MITIGATION_EXTENSION_POINT_DISABLE | |
| MITIGATION_SEHOP | MITIGATION_NONSYSTEM_FONT_DISABLE | |
| MITIGATION_IMAGE_LOAD_NO_REMOTE | MITIGATION_IMAGE_LOAD_NO_LOW_LABEL | |
| MITIGATION_RESTRICT_INDIRECT_BRANCH_PREDICTION | MITIGATION_KTM_COMPONENT; |
| |
| // CET is enabled with the CETCOMPAT bit on chrome.exe so must be |
| // disabled for processes we know are not compatible. |
| if (!delegate->CetCompatible()) |
| mitigations |= MITIGATION_CET_DISABLED; |
| |
| if (base::FeatureList::IsEnabled(features::kWinSboxFsctlLockdown)) { |
| mitigations |= MITIGATION_FSCTL_DISABLED; |
| } |
| |
| ResultCode result = config->SetProcessMitigations(mitigations); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| Sandbox sandbox_type = delegate->GetSandboxType(); |
| // Post-startup mitigations. |
| mitigations = MITIGATION_DLL_SEARCH_ORDER; |
| if (!cmd_line.HasSwitch(switches::kAllowThirdPartyModules) && |
| #if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE) |
| sandbox_type != Sandbox::kScreenAI && |
| #endif |
| sandbox_type != Sandbox::kSpeechRecognition && |
| sandbox_type != Sandbox::kMediaFoundationCdm) { |
| mitigations |= MITIGATION_FORCE_MS_SIGNED_BINS; |
| } |
| |
| if (sandbox_type == Sandbox::kNetwork || sandbox_type == Sandbox::kAudio || |
| sandbox_type == Sandbox::kIconReader) { |
| mitigations |= MITIGATION_DYNAMIC_CODE_DISABLE; |
| } |
| |
| result = config->SetDelayedProcessMitigations(mitigations); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| if (process_type == switches::kRendererProcess) { |
| if (base::FeatureList::IsEnabled(features::kWinSboxRendererCloseKsecDD)) { |
| // TODO(crbug.com/74242) Remove if we can avoid loading cryptbase.dll. |
| result = config->AddKernelObjectToClose(L"File", L"\\Device\\KsecDD"); |
| if (result != SBOX_ALL_OK) { |
| return result; |
| } |
| } |
| result = SandboxWin::AddWin32kLockdownPolicy(config); |
| if (result != SBOX_ALL_OK) { |
| return result; |
| } |
| } |
| |
| if (!delegate->DisableDefaultPolicy()) { |
| result = AddDefaultConfigForSandboxedProcess(config); |
| if (result != SBOX_ALL_OK) |
| return result; |
| } |
| |
| result = |
| SandboxWin::SetJobLevel(sandbox_type, JobLevel::kLockdown, 0, config); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| if (process_type == switches::kGpuProcess && |
| base::FeatureList::IsEnabled( |
| {"GpuLockdownDefaultDacl", base::FEATURE_ENABLED_BY_DEFAULT})) { |
| config->SetLockdownDefaultDacl(); |
| config->AddRestrictingRandomSid(); |
| } |
| |
| #if !defined(NACL_WIN64) |
| if (delegate->AllowWindowsFontsDir()) { |
| AddWindowsFontsDir(config); |
| } |
| #endif |
| |
| result = AddGenericConfig(config); |
| if (result != SBOX_ALL_OK) { |
| NOTREACHED(); |
| return result; |
| } |
| |
| std::string appcontainer_id; |
| if (SandboxWin::IsAppContainerEnabledForSandbox(cmd_line, sandbox_type) && |
| delegate->GetAppContainerId(&appcontainer_id)) { |
| result = SandboxWin::AddAppContainerProfileToConfig( |
| cmd_line, sandbox_type, appcontainer_id, config); |
| DCHECK_EQ(result, SBOX_ALL_OK); |
| if (result != SBOX_ALL_OK) |
| return result; |
| } |
| |
| // Allow the renderer, gpu and utility processes to access the log file. |
| if (process_type == switches::kRendererProcess || |
| process_type == switches::kGpuProcess || |
| process_type == switches::kUtilityProcess) { |
| if (logging::IsLoggingToFileEnabled()) { |
| auto log_path = logging::GetLogFileFullPath(); |
| DCHECK(base::FilePath(log_path).IsAbsolute()); |
| result = |
| config->AllowFileAccess(FileSemantics::kAllowAny, log_path.c_str()); |
| if (result != SBOX_ALL_OK) { |
| return result; |
| } |
| } |
| } |
| |
| if (sandbox_type == Sandbox::kMediaFoundationCdm) { |
| // Set a policy that would normally allow for process creation. This allows |
| // the mf cdm process to launch the protected media pipeline process |
| // (mfpmp.exe) without process interception. |
| result = config->SetJobLevel(JobLevel::kInteractive, 0); |
| if (result != SBOX_ALL_OK) |
| return result; |
| } |
| |
| if (!delegate->InitializeConfig(config)) { |
| return SBOX_ERROR_DELEGATE_INITIALIZE_CONFIG; |
| } |
| |
| return SBOX_ALL_OK; |
| } |
| |
| // Create the job object for unsandboxed processes. |
| base::win::ScopedHandle CreateUnsandboxedJob() { |
| base::win::ScopedHandle job(::CreateJobObject(nullptr, nullptr)); |
| if (!job.is_valid()) { |
| return base::win::ScopedHandle(); |
| } |
| |
| JOBOBJECT_EXTENDED_LIMIT_INFORMATION limits = {}; |
| limits.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE; |
| if (!::SetInformationJobObject(job.get(), JobObjectExtendedLimitInformation, |
| &limits, sizeof(limits))) { |
| return base::win::ScopedHandle(); |
| } |
| return job; |
| } |
| |
| // Launches outside of the sandbox - the process will not be associated with |
| // a Policy or TargetProcess. This supports both kNoSandbox and the --no-sandbox |
| // command line flag. |
| ResultCode LaunchWithoutSandbox( |
| const base::CommandLine& cmd_line, |
| const base::HandlesToInheritVector& handles_to_inherit, |
| SandboxDelegate* delegate, |
| base::Process* process) { |
| base::LaunchOptions options; |
| options.handles_to_inherit = handles_to_inherit; |
| // Network process runs in a job even when unsandboxed. This is to ensure it |
| // does not outlive the browser, which could happen if there is a lot of I/O |
| // on process shutdown, in which case TerminateProcess can fail. See |
| // https://crbug.com/820996. |
| if (delegate->ShouldUnsandboxedRunInJob()) { |
| static base::NoDestructor<base::win::ScopedHandle> job_object( |
| CreateUnsandboxedJob()); |
| if (!job_object->is_valid()) { |
| return SBOX_ERROR_CANNOT_INIT_JOB; |
| } |
| options.job_handle = job_object->get(); |
| } |
| |
| // Chromium binaries are marked as CET Compatible but some processes |
| // are not. When --no-sandbox is specified we disable CET for all children. |
| // Otherwise we are here because the sandbox type is kNoSandbox, and allow |
| // the process delegate to indicate if it is compatible with CET. |
| if (cmd_line.HasSwitch(switches::kNoSandbox) || |
| base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kNoSandbox)) { |
| options.disable_cetcompat = true; |
| } else if (!delegate->CetCompatible()) { |
| options.disable_cetcompat = true; |
| } |
| |
| *process = base::LaunchProcess(cmd_line, options); |
| if (!process->IsValid()) |
| return SBOX_ERROR_CANNOT_LAUNCH_UNSANDBOXED_PROCESS; |
| return SBOX_ALL_OK; |
| } |
| |
| bool IsUnsandboxedProcess( |
| Sandbox sandbox_type, |
| const base::CommandLine& cmd_line, |
| const base::CommandLine& launcher_process_command_line) { |
| if (IsUnsandboxedSandboxType(sandbox_type)) |
| return true; |
| if (cmd_line.HasSwitch(switches::kNoSandbox)) |
| return true; |
| if (launcher_process_command_line.HasSwitch(switches::kNoSandbox)) |
| return true; |
| return false; |
| } |
| |
| } // namespace |
| |
| // static |
| ResultCode SandboxWin::SetJobLevel(Sandbox sandbox_type, |
| JobLevel job_level, |
| uint32_t ui_exceptions, |
| TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| |
| ResultCode ret = config->SetJobLevel(job_level, ui_exceptions); |
| if (ret != SBOX_ALL_OK) |
| return ret; |
| |
| absl::optional<size_t> memory_limit = GetJobMemoryLimit(sandbox_type); |
| if (memory_limit) { |
| config->SetJobMemoryLimit(*memory_limit); |
| } |
| return SBOX_ALL_OK; |
| } |
| |
| // TODO(jschuh): Need get these restrictions applied to NaCl and Pepper. |
| // Just have to figure out what needs to be warmed up first. |
| // static |
| ResultCode SandboxWin::AddBaseHandleClosePolicy(TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| |
| if (base::FeatureList::IsEnabled(kEnableCsrssLockdownFeature)) { |
| // Close all ALPC ports. |
| ResultCode ret = config->SetDisconnectCsrss(); |
| if (ret != SBOX_ALL_OK) |
| return ret; |
| } |
| |
| // TODO(cpu): Add back the BaseNamedObjects policy. |
| std::wstring object_path = PrependWindowsSessionPath( |
| L"\\BaseNamedObjects\\windows_shell_global_counters"); |
| return config->AddKernelObjectToClose(L"Section", object_path.data()); |
| } |
| |
| // static |
| ResultCode SandboxWin::AddAppContainerPolicy(TargetConfig* config, |
| const wchar_t* sid) { |
| DCHECK(!config->IsConfigured()); |
| if (IsAppContainerEnabled()) { |
| ResultCode result = config->SetLowBox(sid); |
| if (result != SBOX_ALL_OK) { |
| return result; |
| } |
| config->GetAppContainer()->AddImpersonationCapability( |
| kLpacChromeInstallFiles); |
| } |
| return SBOX_ALL_OK; |
| } |
| |
| // static |
| ResultCode SandboxWin::AddWin32kLockdownPolicy(TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| #if !defined(NACL_WIN64) |
| MitigationFlags flags = config->GetProcessMitigations(); |
| // Check not enabling twice. Should not happen. |
| DCHECK_EQ(0U, flags & MITIGATION_WIN32K_DISABLE); |
| |
| flags |= MITIGATION_WIN32K_DISABLE; |
| ResultCode result = config->SetProcessMitigations(flags); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| return config->SetFakeGdiInit(); |
| #else // !defined(NACL_WIN64) |
| return SBOX_ALL_OK; |
| #endif |
| } |
| |
| // static |
| ResultCode SandboxWin::AddAppContainerProfileToConfig( |
| const base::CommandLine& command_line, |
| Sandbox sandbox_type, |
| const std::string& appcontainer_id, |
| TargetConfig* config) { |
| DCHECK(!config->IsConfigured()); |
| if (base::win::GetVersion() < base::win::Version::WIN10_RS1) |
| return SBOX_ALL_OK; |
| std::wstring profile_name = |
| GetAppContainerProfileName(appcontainer_id, sandbox_type); |
| ResultCode result = |
| config->AddAppContainerProfile(profile_name.c_str(), true); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| scoped_refptr<AppContainer> container = config->GetAppContainer(); |
| result = |
| SetupAppContainerProfile(container.get(), command_line, sandbox_type); |
| if (result != SBOX_ALL_OK) |
| return result; |
| |
| DWORD granted_access; |
| BOOL granted_access_status; |
| bool access_check = |
| container->AccessCheck(command_line.GetProgram().value().c_str(), |
| base::win::SecurityObjectType::kFile, |
| GENERIC_READ | GENERIC_EXECUTE, &granted_access, |
| &granted_access_status) && |
| granted_access_status; |
| if (!access_check) { |
| PLOG(ERROR) << "Sandbox cannot access executable. Check filesystem " |
| "permissions are valid. See https://bit.ly/31yqMJR."; |
| return SBOX_ERROR_CREATE_APPCONTAINER_ACCESS_CHECK; |
| } |
| |
| return SBOX_ALL_OK; |
| } |
| |
| // static |
| bool SandboxWin::IsAppContainerEnabledForSandbox( |
| const base::CommandLine& command_line, |
| Sandbox sandbox_type) { |
| if (!sandbox::features::IsAppContainerSandboxSupported()) |
| return false; |
| |
| if (sandbox_type == Sandbox::kMediaFoundationCdm) |
| return true; |
| |
| if (sandbox_type == Sandbox::kGpu) |
| return base::FeatureList::IsEnabled(features::kGpuAppContainer); |
| |
| if (sandbox_type == Sandbox::kNetwork) { |
| return true; |
| } |
| |
| if (sandbox_type == Sandbox::kOnDeviceModelExecution) { |
| return true; |
| } |
| |
| if (sandbox_type == Sandbox::kWindowsSystemProxyResolver) |
| return true; |
| |
| return false; |
| } |
| |
| // static |
| bool SandboxWin::InitBrokerServices(BrokerServices* broker_services) { |
| // TODO(abarth): DCHECK(CalledOnValidThread()); |
| // See <http://b/1287166>. |
| DCHECK(broker_services); |
| DCHECK(!g_broker_services); |
| ResultCode init_result = broker_services->Init(); |
| g_broker_services = broker_services; |
| |
| // In non-official builds warn about dangerous uses of DuplicateHandle. This |
| // isn't useful under a component build, since there will be multiple modules, |
| // each of which may have a slot to patch (if the symbol is even present). |
| #if !defined(OFFICIAL_BUILD) && !defined(COMPONENT_BUILD) |
| BOOL is_in_job = FALSE; |
| CHECK(::IsProcessInJob(::GetCurrentProcess(), NULL, &is_in_job)); |
| if (!is_in_job && !GetIATPatchFunctionHandle().is_patched()) { |
| HMODULE module = NULL; |
| wchar_t module_name[MAX_PATH]; |
| CHECK(::GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, |
| reinterpret_cast<LPCWSTR>(InitBrokerServices), |
| &module)); |
| DWORD result = ::GetModuleFileNameW(module, module_name, MAX_PATH); |
| if (result && (result != MAX_PATH)) { |
| result = GetIATPatchFunctionHandle().Patch( |
| module_name, "kernel32.dll", "DuplicateHandle", |
| reinterpret_cast<void*>(DuplicateHandlePatch)); |
| CHECK_EQ(0u, result); |
| g_iat_orig_duplicate_handle = |
| reinterpret_cast<DuplicateHandleFunctionPtr>( |
| GetIATPatchFunctionHandle().original_function()); |
| } |
| } |
| #endif |
| |
| return SBOX_ALL_OK == init_result; |
| } |
| |
| // static |
| bool SandboxWin::InitTargetServices(TargetServices* target_services) { |
| DCHECK(target_services); |
| ResultCode result = target_services->Init(); |
| return SBOX_ALL_OK == result; |
| } |
| |
| // static |
| ResultCode SandboxWin::GeneratePolicyForSandboxedProcess( |
| const base::CommandLine& cmd_line, |
| const std::string& process_type, |
| const base::HandlesToInheritVector& handles_to_inherit, |
| SandboxDelegate* delegate, |
| TargetPolicy* policy) { |
| const base::CommandLine& launcher_process_command_line = |
| *base::CommandLine::ForCurrentProcess(); |
| |
| Sandbox sandbox_type = delegate->GetSandboxType(); |
| // --no-sandbox and kNoSandbox are launched without a policy. |
| if (IsUnsandboxedProcess(sandbox_type, cmd_line, |
| launcher_process_command_line)) { |
| return ResultCode::SBOX_ERROR_UNSANDBOXED_PROCESS; |
| } |
| |
| // Add any handles to be inherited to the policy. |
| for (HANDLE handle : handles_to_inherit) |
| policy->AddHandleToShare(handle); |
| |
| if (!policy->GetConfig()->IsConfigured()) { |
| ResultCode result = GenerateConfigForSandboxedProcess( |
| cmd_line, process_type, delegate, policy->GetConfig()); |
| if (result != SBOX_ALL_OK) |
| return result; |
| } |
| |
| #if !defined(OFFICIAL_BUILD) |
| // If stdout/stderr point to a Windows console, these calls will |
| // have no effect. These calls can fail with SBOX_ERROR_BAD_PARAMS. |
| policy->SetStdoutHandle(GetStdHandle(STD_OUTPUT_HANDLE)); |
| policy->SetStderrHandle(GetStdHandle(STD_ERROR_HANDLE)); |
| #endif |
| |
| if (!delegate->PreSpawnTarget(policy)) |
| return SBOX_ERROR_DELEGATE_PRE_SPAWN; |
| |
| return SBOX_ALL_OK; |
| } |
| |
| // static |
| ResultCode SandboxWin::StartSandboxedProcess( |
| const base::CommandLine& cmd_line, |
| const std::string& process_type, |
| const base::HandlesToInheritVector& handles_to_inherit, |
| SandboxDelegate* delegate, |
| base::Process* process) { |
| const base::ElapsedTimer timer; |
| |
| // Avoid making a policy if we won't use it. |
| if (IsUnsandboxedProcess(delegate->GetSandboxType(), cmd_line, |
| *base::CommandLine::ForCurrentProcess())) { |
| return LaunchWithoutSandbox(cmd_line, handles_to_inherit, delegate, |
| process); |
| } |
| |
| auto policy = g_broker_services->CreatePolicy(delegate->GetSandboxTag()); |
| ResultCode result = GeneratePolicyForSandboxedProcess( |
| cmd_line, process_type, handles_to_inherit, delegate, policy.get()); |
| if (SBOX_ALL_OK != result) |
| return result; |
| |
| TRACE_EVENT_BEGIN0("startup", "StartProcessWithAccess::LAUNCHPROCESS"); |
| |
| PROCESS_INFORMATION temp_process_info = {}; |
| DWORD last_error = ERROR_SUCCESS; |
| result = g_broker_services->SpawnTarget( |
| cmd_line.GetProgram().value().c_str(), |
| cmd_line.GetCommandLineString().c_str(), std::move(policy), &last_error, |
| &temp_process_info); |
| |
| base::win::ScopedProcessInformation target(temp_process_info); |
| |
| TRACE_EVENT_END0("startup", "StartProcessWithAccess::LAUNCHPROCESS"); |
| |
| if (SBOX_ALL_OK != result) { |
| base::UmaHistogramSparse("Process.Sandbox.Launch.Error", last_error); |
| if (result == SBOX_ERROR_GENERIC) |
| DPLOG(ERROR) << "Failed to launch process"; |
| else |
| DLOG(ERROR) << "Failed to launch process. Error: " << result; |
| return result; |
| } |
| |
| delegate->PostSpawnTarget(target.process_handle()); |
| CHECK(ResumeThread(target.thread_handle()) != static_cast<DWORD>(-1)); |
| |
| // Record timing histogram on sandboxed & launched success. |
| // We're interested in the happy fast case so have a low maximum. |
| if (SBOX_ALL_OK == result) { |
| base::UmaHistogramCustomMicrosecondsTimes( |
| "Process.Sandbox.StartSandboxedWin.TotalDuration", timer.Elapsed(), |
| base::Microseconds(5), base::Microseconds(100000), 50); |
| } |
| |
| *process = base::Process(target.TakeProcessHandle()); |
| return SBOX_ALL_OK; |
| } |
| |
| // static |
| ResultCode SandboxWin::GetPolicyDiagnostics( |
| base::OnceCallback<void(base::Value)> response) { |
| CHECK(g_broker_services); |
| CHECK(!response.is_null()); |
| auto receiver = std::make_unique<ServiceManagerDiagnosticsReceiver>( |
| base::SequencedTaskRunner::GetCurrentDefault(), std::move(response)); |
| return g_broker_services->GetPolicyDiagnostics(std::move(receiver)); |
| } |
| |
| void BlocklistAddOneDllForTesting(const wchar_t* module_name, |
| TargetConfig* config) { |
| std::map<std::wstring, std::wstring> modules = GetShortNameModules(); |
| BlocklistAddOneDll(module_name, modules, config); |
| } |
| |
| // static |
| std::string SandboxWin::GetSandboxTypeInEnglish(Sandbox sandbox_type) { |
| switch (sandbox_type) { |
| case Sandbox::kNoSandbox: |
| return "Unsandboxed"; |
| case Sandbox::kNoSandboxAndElevatedPrivileges: |
| return "Unsandboxed (Elevated)"; |
| case Sandbox::kXrCompositing: |
| return "XR Compositing"; |
| case Sandbox::kRenderer: |
| return "Renderer"; |
| case Sandbox::kUtility: |
| return "Utility"; |
| case Sandbox::kGpu: |
| return "GPU"; |
| #if BUILDFLAG(ENABLE_PPAPI) |
| case Sandbox::kPpapi: |
| return "PPAPI"; |
| #endif |
| case Sandbox::kNetwork: |
| return "Network"; |
| case Sandbox::kOnDeviceModelExecution: |
| return "On-Device Model Execution"; |
| case Sandbox::kCdm: |
| return "CDM"; |
| case Sandbox::kPrintCompositor: |
| return "Print Compositor"; |
| #if BUILDFLAG(ENABLE_OOP_PRINTING) |
| case Sandbox::kPrintBackend: |
| return "Print Backend"; |
| #endif |
| case Sandbox::kAudio: |
| return "Audio"; |
| #if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE) |
| case Sandbox::kScreenAI: |
| return "Screen AI"; |
| #endif |
| case Sandbox::kSpeechRecognition: |
| return "Speech Recognition"; |
| case Sandbox::kPdfConversion: |
| return "PDF Conversion"; |
| case Sandbox::kMediaFoundationCdm: |
| return "Media Foundation CDM"; |
| case Sandbox::kService: |
| return "Service"; |
| case Sandbox::kServiceWithJit: |
| return "Service With Jit"; |
| case Sandbox::kIconReader: |
| return "Icon Reader"; |
| case Sandbox::kWindowsSystemProxyResolver: |
| return "Windows System Proxy Resolver"; |
| } |
| } |
| |
| // static |
| std::string SandboxWin::GetSandboxTagForDelegate( |
| base::StringPiece prefix, |
| sandbox::mojom::Sandbox sandbox_type) { |
| // sandbox.mojom.Sandbox has an operator << we can use for non-human values. |
| std::ostringstream stream; |
| stream << prefix << "!" << sandbox_type; |
| return stream.str(); |
| } |
| |
| // static |
| absl::optional<size_t> SandboxWin::GetJobMemoryLimit(Sandbox sandbox_type) { |
| // Trigger feature list initialization here to ensure no population bias in |
| // the experimental and control groups. |
| [[maybe_unused]] const bool high_renderer_limits = |
| base::FeatureList::IsEnabled( |
| sandbox::policy::features::kWinSboxHighRendererJobMemoryLimits); |
| |
| #if defined(ARCH_CPU_64_BITS) |
| size_t memory_limit = static_cast<size_t>(kDataSizeLimit); |
| |
| if (sandbox_type == Sandbox::kGpu || sandbox_type == Sandbox::kRenderer) { |
| constexpr uint64_t GB = 1024 * 1024 * 1024; |
| // Allow the GPU/RENDERER process's sandbox to access more physical memory |
| // if it's available on the system. |
| // |
| // Renderer processes are allowed to access 16 GB; the GPU process, up |
| // to 64 GB. |
| uint64_t physical_memory = base::SysInfo::AmountOfPhysicalMemory(); |
| if (sandbox_type == Sandbox::kGpu && physical_memory > 64 * GB) { |
| memory_limit = 64 * GB; |
| } else if (sandbox_type == Sandbox::kGpu && physical_memory > 32 * GB) { |
| memory_limit = 32 * GB; |
| } else if (physical_memory > 16 * GB) { |
| memory_limit = 16 * GB; |
| } else { |
| memory_limit = 8 * GB; |
| } |
| |
| if (sandbox_type == Sandbox::kRenderer && high_renderer_limits) { |
| // Set limit to 1Tb. |
| memory_limit = 1024 * GB; |
| } |
| } |
| return memory_limit; |
| #else |
| return absl::nullopt; |
| #endif |
| } |
| |
| } // namespace policy |
| } // namespace sandbox |