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Unified Diff: content/common/sandbox_win.cc

Issue 1923653002: Wire up process launch error codes. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 8 months ago
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Index: content/common/sandbox_win.cc
diff --git a/content/common/sandbox_win.cc b/content/common/sandbox_win.cc
index 1b1e28dd17fa4142f13dd37af766dd2f97dcc2f3..353534998f12660ddd34935e652cdcc6e01252dd 100644
--- a/content/common/sandbox_win.cc
+++ b/content/common/sandbox_win.cc
@@ -280,7 +280,7 @@ bool ShouldSetJobLevel(const base::CommandLine& cmd_line) {
}
// Adds the generic policy rules to a sandbox TargetPolicy.
-bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
+sandbox::ResultCode AddGenericPolicy(sandbox::TargetPolicy* policy) {
sandbox::ResultCode result;
// Add the policy for the client side of a pipe. It is just a file
@@ -290,7 +290,7 @@ bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
sandbox::TargetPolicy::FILES_ALLOW_ANY,
L"\\??\\pipe\\chrome.*");
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
// Add the policy for the server side of nacl pipe. It is just a file
// in the \pipe\ namespace. We restrict it to pipes that start with
@@ -300,7 +300,7 @@ bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
sandbox::TargetPolicy::NAMEDPIPES_ALLOW_ANY,
L"\\\\.\\pipe\\chrome.nacl.*");
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
// Allow the server side of sync sockets, which are pipes that have
// the "chrome.sync" namespace and a randomly generated suffix.
@@ -308,7 +308,7 @@ bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
sandbox::TargetPolicy::NAMEDPIPES_ALLOW_ANY,
L"\\\\.\\pipe\\chrome.sync.*");
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
// Add the policy for debug message only in debug
#ifndef NDEBUG
@@ -329,20 +329,20 @@ bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
sandbox::TargetPolicy::PROCESS_MIN_EXEC,
debug_message.value().c_str());
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
#endif // NDEBUG
// Add the policy for read-only PDB file access for stack traces.
#if !defined(OFFICIAL_BUILD)
base::FilePath exe;
if (!PathService::Get(base::FILE_EXE, &exe))
- return false;
+ return sandbox::SBOX_ERROR_GENERIC;
base::FilePath pdb_path = exe.DirName().Append(L"*.pdb");
result = policy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES,
sandbox::TargetPolicy::FILES_ALLOW_READONLY,
pdb_path.value().c_str());
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
#endif
#if defined(SANITIZER_COVERAGE)
@@ -363,22 +363,23 @@ bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
sandbox::TargetPolicy::FILES_ALLOW_ANY,
sancov_path.value().c_str());
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
}
#endif
AddGenericDllEvictionPolicy(policy);
- return true;
+ return sandbox::SBOX_ALL_OK;
}
-bool AddPolicyForSandboxedProcess(sandbox::TargetPolicy* policy) {
+sandbox::ResultCode AddPolicyForSandboxedProcess(
+ sandbox::TargetPolicy* policy) {
sandbox::ResultCode result = sandbox::SBOX_ALL_OK;
// Win8+ adds a device DeviceApi that we don't need.
if (base::win::GetVersion() > base::win::VERSION_WIN7)
result = policy->AddKernelObjectToClose(L"File", L"\\Device\\DeviceApi");
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
// Close the proxy settings on XP.
if (base::win::GetVersion() <= base::win::VERSION_SERVER_2003)
@@ -386,7 +387,7 @@ bool AddPolicyForSandboxedProcess(sandbox::TargetPolicy* policy) {
L"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\" \
L"CurrentVersion\\Internet Settings");
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
sandbox::TokenLevel initial_token = sandbox::USER_UNPROTECTED;
if (base::win::GetVersion() > base::win::VERSION_XP) {
@@ -395,17 +396,25 @@ bool AddPolicyForSandboxedProcess(sandbox::TargetPolicy* policy) {
initial_token = sandbox::USER_RESTRICTED_SAME_ACCESS;
}
- policy->SetTokenLevel(initial_token, sandbox::USER_LOCKDOWN);
+ result = policy->SetTokenLevel(initial_token, sandbox::USER_LOCKDOWN);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
// Prevents the renderers from manipulating low-integrity processes.
- policy->SetDelayedIntegrityLevel(sandbox::INTEGRITY_LEVEL_UNTRUSTED);
- policy->SetIntegrityLevel(sandbox::INTEGRITY_LEVEL_LOW);
+ result = policy->SetDelayedIntegrityLevel(sandbox::INTEGRITY_LEVEL_UNTRUSTED);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
+ result = policy->SetIntegrityLevel(sandbox::INTEGRITY_LEVEL_LOW);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
policy->SetLockdownDefaultDacl();
- if (sandbox::SBOX_ALL_OK != policy->SetAlternateDesktop(true)) {
+ result = policy->SetAlternateDesktop(true);
+ if (result != sandbox::SBOX_ALL_OK) {
DLOG(WARNING) << "Failed to apply desktop security to the renderer";
+ return result;
}
- return true;
+ return result;
}
// Updates the command line arguments with debug-related flags. If debug flags
@@ -547,44 +556,49 @@ bool IsAppContainerEnabled() {
} // namespace
-void SetJobLevel(const base::CommandLine& cmd_line,
- sandbox::JobLevel job_level,
- uint32_t ui_exceptions,
- sandbox::TargetPolicy* policy) {
- if (ShouldSetJobLevel(cmd_line)) {
+sandbox::ResultCode SetJobLevel(const base::CommandLine& cmd_line,
+ sandbox::JobLevel job_level,
+ uint32_t ui_exceptions,
+ sandbox::TargetPolicy* policy) {
+ if (!ShouldSetJobLevel(cmd_line))
+ return policy->SetJobLevel(sandbox::JOB_NONE, 0);
+
#ifdef _WIN64
- policy->SetJobMemoryLimit(4ULL * 1024 * 1024 * 1024);
+ sandbox::ResultCode ret =
+ policy->SetJobMemoryLimit(4ULL * 1024 * 1024 * 1024);
+ if (ret != sandbox::SBOX_ALL_OK)
+ return ret;
#endif
- policy->SetJobLevel(job_level, ui_exceptions);
- } else {
- policy->SetJobLevel(sandbox::JOB_NONE, 0);
- }
+ return policy->SetJobLevel(job_level, ui_exceptions);
}
// TODO(jschuh): Need get these restrictions applied to NaCl and Pepper.
// Just have to figure out what needs to be warmed up first.
-void AddBaseHandleClosePolicy(sandbox::TargetPolicy* policy) {
+sandbox::ResultCode AddBaseHandleClosePolicy(sandbox::TargetPolicy* policy) {
// TODO(cpu): Add back the BaseNamedObjects policy.
base::string16 object_path = PrependWindowsSessionPath(
L"\\BaseNamedObjects\\windows_shell_global_counters");
- policy->AddKernelObjectToClose(L"Section", object_path.data());
+ return policy->AddKernelObjectToClose(L"Section", object_path.data());
}
-void AddAppContainerPolicy(sandbox::TargetPolicy* policy, const wchar_t* sid) {
+sandbox::ResultCode AddAppContainerPolicy(sandbox::TargetPolicy* policy,
+ const wchar_t* sid) {
if (IsAppContainerEnabled())
- policy->SetLowBox(sid);
+ return policy->SetLowBox(sid);
+ return sandbox::SBOX_ALL_OK;
}
-bool AddWin32kLockdownPolicy(sandbox::TargetPolicy* policy, bool enable_opm) {
+sandbox::ResultCode AddWin32kLockdownPolicy(sandbox::TargetPolicy* policy,
+ bool enable_opm) {
#if !defined(NACL_WIN64)
if (!IsWin32kRendererLockdownEnabled())
- return true;
+ return sandbox::SBOX_ALL_OK;
// Enable win32k lockdown if not already.
sandbox::MitigationFlags flags = policy->GetProcessMitigations();
if ((flags & sandbox::MITIGATION_WIN32K_DISABLE) ==
sandbox::MITIGATION_WIN32K_DISABLE)
- return true;
+ return sandbox::SBOX_ALL_OK;
sandbox::ResultCode result =
policy->AddRule(sandbox::TargetPolicy::SUBSYS_WIN32K_LOCKDOWN,
@@ -592,15 +606,15 @@ bool AddWin32kLockdownPolicy(sandbox::TargetPolicy* policy, bool enable_opm) {
: sandbox::TargetPolicy::FAKE_USER_GDI_INIT,
nullptr);
if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return result;
if (enable_opm)
policy->SetEnableOPMRedirection();
+
flags |= sandbox::MITIGATION_WIN32K_DISABLE;
- result = policy->SetProcessMitigations(flags);
- if (result != sandbox::SBOX_ALL_OK)
- return false;
+ return policy->SetProcessMitigations(flags);
+#else
+ return sandbox::SBOX_ALL_OK;
#endif
- return true;
}
bool InitBrokerServices(sandbox::BrokerServices* broker_services) {
@@ -648,10 +662,11 @@ bool InitTargetServices(sandbox::TargetServices* target_services) {
return sandbox::SBOX_ALL_OK == result;
}
-base::Process StartSandboxedProcess(
+sandbox::ResultCode StartSandboxedProcess(
SandboxedProcessLauncherDelegate* delegate,
base::CommandLine* cmd_line,
- const base::HandlesToInheritVector& handles_to_inherit) {
+ const base::HandlesToInheritVector& handles_to_inherit,
+ base::Process* process) {
DCHECK(delegate);
const base::CommandLine& browser_command_line =
*base::CommandLine::ForCurrentProcess();
@@ -677,8 +692,10 @@ base::Process StartSandboxedProcess(
options.inherit_handles = true;
options.handles_to_inherit = &handles;
}
- base::Process process = base::LaunchProcess(*cmd_line, options);
- return process;
+ base::Process unsandboxed_process = base::LaunchProcess(*cmd_line, options);
+
+ *process = std::move(unsandboxed_process);
+ return sandbox::SBOX_ALL_OK;
}
sandbox::TargetPolicy* policy = g_broker_services->CreatePolicy();
@@ -698,14 +715,19 @@ base::Process StartSandboxedProcess(
sandbox::MITIGATION_IMAGE_LOAD_NO_REMOTE |
sandbox::MITIGATION_IMAGE_LOAD_NO_LOW_LABEL;
- if (policy->SetProcessMitigations(mitigations) != sandbox::SBOX_ALL_OK)
- return base::Process();
+ sandbox::ResultCode result = sandbox::SBOX_ERROR_GENERIC;
+
+ result = policy->SetProcessMitigations(mitigations);
+
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
#if !defined(NACL_WIN64)
if (type_str == switches::kRendererProcess &&
IsWin32kRendererLockdownEnabled()) {
- if (!AddWin32kLockdownPolicy(policy, false))
- return base::Process();
+ result = AddWin32kLockdownPolicy(policy, false);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
}
#endif
@@ -713,14 +735,18 @@ base::Process StartSandboxedProcess(
mitigations = sandbox::MITIGATION_STRICT_HANDLE_CHECKS |
sandbox::MITIGATION_DLL_SEARCH_ORDER;
- if (policy->SetDelayedProcessMitigations(mitigations) != sandbox::SBOX_ALL_OK)
- return base::Process();
+ result = policy->SetDelayedProcessMitigations(mitigations);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
- SetJobLevel(*cmd_line, sandbox::JOB_LOCKDOWN, 0, policy);
+ result = SetJobLevel(*cmd_line, sandbox::JOB_LOCKDOWN, 0, policy);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
if (!delegate->DisableDefaultPolicy()) {
- if (!AddPolicyForSandboxedProcess(policy))
- return base::Process();
+ result = AddPolicyForSandboxedProcess(policy);
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
}
#if !defined(NACL_WIN64)
@@ -738,9 +764,11 @@ base::Process StartSandboxedProcess(
cmd_line->AppendSwitchASCII("ignored", " --type=renderer ");
}
- if (!AddGenericPolicy(policy)) {
+ result = AddGenericPolicy(policy);
+
+ if (result != sandbox::SBOX_ALL_OK) {
NOTREACHED();
- return base::Process();
+ return result;
}
// Allow the renderer and gpu processes to access the log file.
@@ -748,26 +776,28 @@ base::Process StartSandboxedProcess(
type_str == switches::kGpuProcess) {
if (logging::IsLoggingToFileEnabled()) {
DCHECK(base::FilePath(logging::GetLogFileFullPath()).IsAbsolute());
- policy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES,
- sandbox::TargetPolicy::FILES_ALLOW_ANY,
- logging::GetLogFileFullPath().c_str());
+ result = policy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES,
+ sandbox::TargetPolicy::FILES_ALLOW_ANY,
+ logging::GetLogFileFullPath().c_str());
+ if (result != sandbox::SBOX_ALL_OK)
+ return result;
}
}
#if !defined(OFFICIAL_BUILD)
// If stdout/stderr point to a Windows console, these calls will
- // have no effect.
+ // 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 base::Process();
+ return sandbox::SBOX_ERROR_DELEGATE_PRE_SPAWN;
TRACE_EVENT_BEGIN0("startup", "StartProcessWithAccess::LAUNCHPROCESS");
PROCESS_INFORMATION temp_process_info = {};
- sandbox::ResultCode result = g_broker_services->SpawnTarget(
+ result = g_broker_services->SpawnTarget(
cmd_line->GetProgram().value().c_str(),
cmd_line->GetCommandLineString().c_str(), policy, &temp_process_info);
DWORD last_error = ::GetLastError();
@@ -790,13 +820,14 @@ base::Process StartSandboxedProcess(
} else
DLOG(ERROR) << "Failed to launch process. Error: " << result;
- return base::Process();
+ return result;
}
delegate->PostSpawnTarget(target.process_handle());
CHECK(ResumeThread(target.thread_handle()) != static_cast<DWORD>(-1));
- return base::Process(target.TakeProcessHandle());
+ *process = base::Process(target.TakeProcessHandle());
+ return sandbox::SBOX_ALL_OK;
}
} // namespace content
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