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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// These tests have been added to specifically tests issues arising from (A)LPC
// lock down.
#include <algorithm>
#include <cctype>
#include <windows.h>
#include <winioctl.h>
#include "base/win/windows_version.h"
#include "build/build_config.h"
#include "sandbox/win/src/heap_helper.h"
#include "sandbox/win/src/sandbox.h"
#include "sandbox/win/src/sandbox_factory.h"
#include "sandbox/win/src/sandbox_policy.h"
#include "sandbox/win/tests/common/controller.h"
#include "sandbox/win/tests/common/test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace sandbox {
namespace {
bool CsrssDisconnectSupported() {
// This functionality has not been verified on versions before Win10.
if (base::win::GetVersion() < base::win::Version::WIN10)
return false;
// Does not work on 32-bit on x64 (ie Wow64).
return (base::win::OSInfo::GetInstance()->wow64_status() !=
base::win::OSInfo::WOW64_ENABLED);
}
} // namespace
// Converts LCID to std::wstring for passing to sbox tests.
std::wstring LcidToWString(LCID lcid) {
wchar_t buff[10] = {0};
int res = swprintf_s(buff, sizeof(buff) / sizeof(buff[0]), L"%08x", lcid);
if (-1 != res) {
return std::wstring(buff);
}
return std::wstring();
}
// Converts LANGID to std::wstring for passing to sbox tests.
std::wstring LangidToWString(LANGID langid) {
wchar_t buff[10] = {0};
int res = swprintf_s(buff, sizeof(buff) / sizeof(buff[0]), L"%04x", langid);
if (-1 != res) {
return std::wstring(buff);
}
return std::wstring();
}
SBOX_TESTS_COMMAND int Lpc_GetUserDefaultLangID(int argc, wchar_t** argv) {
if (argc != 1)
return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
std::wstring expected_langid_string(argv[0]);
// This will cause an exception if not warmed up suitably.
LANGID langid = ::GetUserDefaultLangID();
std::wstring langid_string = LangidToWString(langid);
if (0 == wcsncmp(langid_string.c_str(), expected_langid_string.c_str(), 4)) {
return SBOX_TEST_SUCCEEDED;
}
return SBOX_TEST_FAILED;
}
TEST(LpcPolicyTest, GetUserDefaultLangID) {
LANGID langid = ::GetUserDefaultLangID();
std::wstring cmd = L"Lpc_GetUserDefaultLangID " + LangidToWString(langid);
TestRunner runner;
EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(cmd.c_str()));
}
SBOX_TESTS_COMMAND int Lpc_GetUserDefaultLCID(int argc, wchar_t** argv) {
if (argc != 1)
return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
std::wstring expected_lcid_string(argv[0]);
// This will cause an exception if not warmed up suitably.
LCID lcid = ::GetUserDefaultLCID();
std::wstring lcid_string = LcidToWString(lcid);
if (0 == wcsncmp(lcid_string.c_str(), expected_lcid_string.c_str(), 8)) {
return SBOX_TEST_SUCCEEDED;
}
return SBOX_TEST_FAILED;
}
TEST(LpcPolicyTest, GetUserDefaultLCID) {
LCID lcid = ::GetUserDefaultLCID();
std::wstring cmd = L"Lpc_GetUserDefaultLCID " + LcidToWString(lcid);
TestRunner runner;
EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(cmd.c_str()));
}
// GetUserDefaultLocaleName is not available on WIN XP. So we'll
// load it on-the-fly.
const wchar_t kKernel32DllName[] = L"kernel32.dll";
typedef int(WINAPI* GetUserDefaultLocaleNameFunction)(LPWSTR lpLocaleName,
int cchLocaleName);
SBOX_TESTS_COMMAND int Lpc_GetUserDefaultLocaleName(int argc, wchar_t** argv) {
if (argc != 1)
return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
std::wstring expected_locale_name(argv[0]);
static GetUserDefaultLocaleNameFunction GetUserDefaultLocaleName_func =
nullptr;
if (!GetUserDefaultLocaleName_func) {
// GetUserDefaultLocaleName is not available on WIN XP. So we'll
// load it on-the-fly.
HMODULE kernel32_dll = ::GetModuleHandle(kKernel32DllName);
if (!kernel32_dll) {
return SBOX_TEST_FAILED;
}
GetUserDefaultLocaleName_func =
reinterpret_cast<GetUserDefaultLocaleNameFunction>(
GetProcAddress(kernel32_dll, "GetUserDefaultLocaleName"));
if (!GetUserDefaultLocaleName_func) {
return SBOX_TEST_FAILED;
}
}
wchar_t locale_name[LOCALE_NAME_MAX_LENGTH] = {0};
// This will cause an exception if not warmed up suitably.
int ret = GetUserDefaultLocaleName_func(
locale_name, LOCALE_NAME_MAX_LENGTH * sizeof(wchar_t));
if (!ret) {
return SBOX_TEST_FAILED;
}
if (!wcsnlen(locale_name, LOCALE_NAME_MAX_LENGTH)) {
return SBOX_TEST_FAILED;
}
if (0 == wcsncmp(locale_name, expected_locale_name.c_str(),
LOCALE_NAME_MAX_LENGTH)) {
return SBOX_TEST_SUCCEEDED;
}
return SBOX_TEST_FAILED;
}
TEST(LpcPolicyTest, GetUserDefaultLocaleName) {
static GetUserDefaultLocaleNameFunction GetUserDefaultLocaleName_func =
nullptr;
if (!GetUserDefaultLocaleName_func) {
// GetUserDefaultLocaleName is not available on WIN XP. So we'll
// load it on-the-fly.
HMODULE kernel32_dll = ::GetModuleHandle(kKernel32DllName);
EXPECT_NE(nullptr, kernel32_dll);
GetUserDefaultLocaleName_func =
reinterpret_cast<GetUserDefaultLocaleNameFunction>(
GetProcAddress(kernel32_dll, "GetUserDefaultLocaleName"));
EXPECT_NE(nullptr, GetUserDefaultLocaleName_func);
}
wchar_t locale_name[LOCALE_NAME_MAX_LENGTH] = {0};
EXPECT_NE(0, GetUserDefaultLocaleName_func(
locale_name, LOCALE_NAME_MAX_LENGTH * sizeof(wchar_t)));
EXPECT_NE(0U, wcsnlen(locale_name, LOCALE_NAME_MAX_LENGTH));
std::wstring cmd =
L"Lpc_GetUserDefaultLocaleName " + std::wstring(locale_name);
TestRunner runner;
EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(cmd.c_str()));
}
// Closing ALPC port can invalidate its heap.
// Test that all heaps are valid.
SBOX_TESTS_COMMAND int Lpc_TestValidProcessHeaps(int argc, wchar_t** argv) {
if (argc != 0)
return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
// Retrieves the number of heaps in the current process.
DWORD number_of_heaps = ::GetProcessHeaps(0, nullptr);
// Try to retrieve a handle to all the heaps owned by this process. Returns
// false if the number of heaps has changed.
//
// This is inherently racy as is, but it's not something that we observe a lot
// in Chrome, the heaps tend to be created at startup only.
std::unique_ptr<HANDLE[]> all_heaps(new HANDLE[number_of_heaps]);
if (::GetProcessHeaps(number_of_heaps, all_heaps.get()) != number_of_heaps)
return SBOX_TEST_FIRST_ERROR;
for (size_t i = 0; i < number_of_heaps; ++i) {
HANDLE handle = all_heaps[i];
ULONG HeapInformation;
bool result = HeapQueryInformation(handle, HeapCompatibilityInformation,
&HeapInformation,
sizeof(HeapInformation), nullptr);
if (!result)
return SBOX_TEST_SECOND_ERROR;
}
return SBOX_TEST_SUCCEEDED;
}
TEST(LpcPolicyTest, TestValidProcessHeaps) {
TestRunner runner;
EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"Lpc_TestValidProcessHeaps"));
}
// All processes should have a shared heap with csrss.exe. This test ensures
// that this heap can be found.
TEST(LpcPolicyTest, TestCanFindCsrPortHeap) {
if (!CsrssDisconnectSupported()) {
return;
}
HANDLE csr_port_handle = sandbox::FindCsrPortHeap();
EXPECT_NE(nullptr, csr_port_handle);
}
// Fails on Windows ARM64: https://crbug.com/905328
#if defined(ARCH_CPU_ARM64)
#define MAYBE_TestHeapFlags DISABLED_TestHeapFlags
#else
#define MAYBE_TestHeapFlags TestHeapFlags
#endif
TEST(LpcPolicyTest, MAYBE_TestHeapFlags) {
if (!CsrssDisconnectSupported()) {
// This functionality has not been verified on versions before Win10.
return;
}
// Windows does not support callers supplying arbritary flag values. So we
// write some non-trivial value to reduce the chance we match this in random
// data.
DWORD flags = 0x41007;
HANDLE heap = HeapCreate(flags, 0, 0);
EXPECT_NE(nullptr, heap);
DWORD actual_flags = 0;
EXPECT_TRUE(sandbox::HeapFlags(heap, &actual_flags));
EXPECT_EQ(flags, actual_flags);
EXPECT_TRUE(HeapDestroy(heap));
}
} // namespace sandbox
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