| // Copyright (c) 2011 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. |
| |
| #include "base/stringprintf.h" |
| #include "base/win/scoped_handle.h" |
| #include "sandbox/win/src/handle_closer_agent.h" |
| #include "sandbox/win/src/sandbox.h" |
| #include "sandbox/win/src/sandbox_factory.h" |
| #include "sandbox/win/src/target_services.h" |
| #include "sandbox/win/tests/common/controller.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace { |
| |
| const wchar_t *kFileExtensions[] = { L".1", L".2", L".3", L".4" }; |
| |
| // Returns a handle to a unique marker file that can be retrieved between runs. |
| HANDLE GetMarkerFile(const wchar_t *extension) { |
| wchar_t path_buffer[MAX_PATH + 1]; |
| CHECK(::GetTempPath(MAX_PATH, path_buffer)); |
| string16 marker_path = path_buffer; |
| marker_path += L"\\sbox_marker_"; |
| |
| // Generate a unique value from the exe's size and timestamp. |
| CHECK(::GetModuleFileName(NULL, path_buffer, MAX_PATH)); |
| base::win::ScopedHandle module(::CreateFile(path_buffer, |
| FILE_READ_ATTRIBUTES, FILE_SHARE_READ, NULL, |
| OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)); |
| CHECK(module.IsValid()); |
| FILETIME timestamp; |
| CHECK(::GetFileTime(module, ×tamp, NULL, NULL)); |
| marker_path += base::StringPrintf(L"%08x%08x%08x", |
| ::GetFileSize(module, NULL), |
| timestamp.dwLowDateTime, |
| timestamp.dwHighDateTime); |
| marker_path += extension; |
| |
| // Make the file delete-on-close so cleanup is automatic. |
| return CreateFile(marker_path.c_str(), FILE_ALL_ACCESS, |
| FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, |
| NULL, OPEN_ALWAYS, FILE_FLAG_DELETE_ON_CLOSE, NULL); |
| } |
| |
| // Used by the thread pool tests. |
| HANDLE finish_event; |
| const int kWaitCount = 20; |
| |
| } // namespace |
| |
| namespace sandbox { |
| |
| // Checks for the presence of a list of files (in object path form). |
| // Format: CheckForFileHandle (Y|N) \path\to\file1 [\path\to\file2 ...] |
| // - Y or N depending if the file should exist or not. |
| SBOX_TESTS_COMMAND int CheckForFileHandles(int argc, wchar_t **argv) { |
| if (argc < 2) |
| return SBOX_TEST_FAILED_TO_RUN_TEST; |
| bool should_find = argv[0][0] == L'Y'; |
| if (argv[0][1] != L'\0' || !should_find && argv[0][0] != L'N') |
| return SBOX_TEST_FAILED_TO_RUN_TEST; |
| |
| static int state = BEFORE_INIT; |
| switch (state++) { |
| case BEFORE_INIT: |
| // Create a unique marker file that is open while the test is running. |
| // The handles leak, but it will be closed by the test or on exit. |
| for (int i = 0; i < arraysize(kFileExtensions); ++i) |
| EXPECT_NE(GetMarkerFile(kFileExtensions[i]), INVALID_HANDLE_VALUE); |
| return SBOX_TEST_SUCCEEDED; |
| |
| case AFTER_REVERT: { |
| // Brute force the handle table to find what we're looking for. |
| DWORD handle_count = UINT_MAX; |
| const int kInvalidHandleThreshold = 100; |
| const size_t kHandleOffset = sizeof(HANDLE); |
| HANDLE handle = NULL; |
| int invalid_count = 0; |
| string16 handle_name; |
| |
| if (!::GetProcessHandleCount(::GetCurrentProcess(), &handle_count)) |
| return SBOX_TEST_FAILED_TO_RUN_TEST; |
| |
| while (handle_count && invalid_count < kInvalidHandleThreshold) { |
| reinterpret_cast<size_t&>(handle) += kHandleOffset; |
| if (GetHandleName(handle, &handle_name)) { |
| for (int i = 1; i < argc; ++i) { |
| if (handle_name == argv[i]) |
| return should_find ? SBOX_TEST_SUCCEEDED : SBOX_TEST_FAILED; |
| } |
| --handle_count; |
| } else { |
| ++invalid_count; |
| } |
| } |
| |
| return should_find ? SBOX_TEST_FAILED : SBOX_TEST_SUCCEEDED; |
| } |
| |
| default: // Do nothing. |
| break; |
| } |
| |
| return SBOX_TEST_SUCCEEDED; |
| } |
| |
| TEST(HandleCloserTest, CheckForMarkerFiles) { |
| TestRunner runner; |
| runner.SetTimeout(2000); |
| runner.SetTestState(EVERY_STATE); |
| sandbox::TargetPolicy* policy = runner.GetPolicy(); |
| |
| string16 command = string16(L"CheckForFileHandles Y"); |
| for (int i = 0; i < arraysize(kFileExtensions); ++i) { |
| string16 handle_name; |
| base::win::ScopedHandle marker(GetMarkerFile(kFileExtensions[i])); |
| CHECK(marker.IsValid()); |
| CHECK(sandbox::GetHandleName(marker, &handle_name)); |
| command += (L" "); |
| command += handle_name; |
| } |
| |
| EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command.c_str())) << |
| "Failed: " << command; |
| } |
| |
| TEST(HandleCloserTest, CloseMarkerFiles) { |
| TestRunner runner; |
| runner.SetTimeout(2000); |
| runner.SetTestState(EVERY_STATE); |
| sandbox::TargetPolicy* policy = runner.GetPolicy(); |
| |
| string16 command = string16(L"CheckForFileHandles N"); |
| for (int i = 0; i < arraysize(kFileExtensions); ++i) { |
| string16 handle_name; |
| base::win::ScopedHandle marker(GetMarkerFile(kFileExtensions[i])); |
| CHECK(marker.IsValid()); |
| CHECK(sandbox::GetHandleName(marker, &handle_name)); |
| CHECK_EQ(policy->AddKernelObjectToClose(L"File", handle_name.c_str()), |
| SBOX_ALL_OK); |
| command += (L" "); |
| command += handle_name; |
| } |
| |
| EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command.c_str())) << |
| "Failed: " << command; |
| } |
| |
| void WINAPI ThreadPoolTask(void* event, BOOLEAN timeout) { |
| static volatile LONG waiters_remaining = kWaitCount; |
| CHECK(!timeout); |
| CHECK(::CloseHandle(event)); |
| if (::InterlockedDecrement(&waiters_remaining) == 0) |
| CHECK(::SetEvent(finish_event)); |
| } |
| |
| // Run a thread pool inside a sandbox without a CSRSS connection. |
| SBOX_TESTS_COMMAND int RunThreadPool(int argc, wchar_t **argv) { |
| HANDLE wait_list[20]; |
| CHECK(finish_event = ::CreateEvent(NULL, TRUE, FALSE, NULL)); |
| |
| // Set up a bunch of waiters. |
| HANDLE pool = NULL; |
| for (int i = 0; i < kWaitCount; ++i) { |
| HANDLE event = ::CreateEvent(NULL, TRUE, FALSE, NULL); |
| CHECK(event); |
| CHECK(::RegisterWaitForSingleObject(&pool, event, ThreadPoolTask, event, |
| INFINITE, WT_EXECUTEONLYONCE)); |
| wait_list[i] = event; |
| } |
| |
| // Signal all the waiters. |
| for (int i = 0; i < kWaitCount; ++i) |
| CHECK(::SetEvent(wait_list[i])); |
| |
| CHECK_EQ(::WaitForSingleObject(finish_event, INFINITE), WAIT_OBJECT_0); |
| CHECK(::CloseHandle(finish_event)); |
| |
| return SBOX_TEST_SUCCEEDED; |
| } |
| |
| TEST(HandleCloserTest, RunThreadPool) { |
| TestRunner runner; |
| runner.SetTimeout(2000); |
| runner.SetTestState(AFTER_REVERT); |
| sandbox::TargetPolicy* policy = runner.GetPolicy(); |
| |
| // Sever the CSRSS connection by closing ALPC ports inside the sandbox. |
| CHECK_EQ(policy->AddKernelObjectToClose(L"ALPC Port", NULL), SBOX_ALL_OK); |
| |
| EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"RunThreadPool")); |
| } |
| |
| } // namespace sandbox |