root/sandbox/win/tests/validation_tests/suite.cc

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DEFINITIONS

This source file includes following definitions.
  1. TestProcessAccess
  2. VolumeSupportsACLs
  3. TEST
  4. TEST
  5. TEST
  6. TEST
  7. TEST
  8. TEST
  9. TEST
  10. TEST
  11. TEST
  12. TEST

// Copyright (c) 2012 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.

// This file contains the validation tests for the sandbox.
// It includes the tests that need to be performed inside the
// sandbox.

#include <shlwapi.h>

#include "base/win/windows_version.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "sandbox/win/tests/common/controller.h"

#pragma comment(lib, "shlwapi.lib")

namespace {

void TestProcessAccess(sandbox::TestRunner* runner, DWORD target) {
  const wchar_t *kCommandTemplate = L"OpenProcessCmd %d %d";
  wchar_t command[1024] = {0};

  // Test all the scary process permissions.
  wsprintf(command, kCommandTemplate, target, PROCESS_CREATE_THREAD);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, PROCESS_DUP_HANDLE);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, PROCESS_SET_INFORMATION);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, PROCESS_VM_OPERATION);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, PROCESS_VM_READ);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, PROCESS_VM_WRITE);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, PROCESS_QUERY_INFORMATION);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, WRITE_DAC);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, WRITE_OWNER);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
  wsprintf(command, kCommandTemplate, target, READ_CONTROL);
  EXPECT_EQ(sandbox::SBOX_TEST_DENIED, runner->RunTest(command));
}

}  // namespace

namespace sandbox {

// Returns true if the volume that contains any_path supports ACL security. The
// input path can contain unexpanded environment strings. Returns false on any
// failure or if the file system does not support file security (such as FAT).
bool VolumeSupportsACLs(const wchar_t* any_path) {
  wchar_t expand[MAX_PATH +1];
  DWORD len =::ExpandEnvironmentStringsW(any_path, expand, _countof(expand));
  if (0 == len) return false;
  if (len >  _countof(expand)) return false;
  if (!::PathStripToRootW(expand)) return false;
  DWORD fs_flags = 0;
  if (!::GetVolumeInformationW(expand, NULL, 0, 0, NULL, &fs_flags, NULL, 0))
    return false;
  if (fs_flags & FILE_PERSISTENT_ACLS) return true;
  return false;
}

// Tests if the suite is working properly.
TEST(ValidationSuite, TestSuite) {
  TestRunner runner;
  ASSERT_EQ(SBOX_TEST_PING_OK, runner.RunTest(L"ping"));
}

// Tests if the file system is correctly protected by the sandbox.
TEST(ValidationSuite, TestFileSystem) {
  // Do not perform the test if the system is using FAT or any other
  // file system that does not have file security.
  ASSERT_TRUE(VolumeSupportsACLs(L"%SystemDrive%\\"));
  ASSERT_TRUE(VolumeSupportsACLs(L"%SystemRoot%\\"));
  ASSERT_TRUE(VolumeSupportsACLs(L"%ProgramFiles%\\"));
  ASSERT_TRUE(VolumeSupportsACLs(L"%Temp%\\"));
  ASSERT_TRUE(VolumeSupportsACLs(L"%AppData%\\"));

  TestRunner runner;
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenFile %SystemDrive%"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenFile %SystemRoot%"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenFile %ProgramFiles%"));
  EXPECT_EQ(SBOX_TEST_DENIED,
      runner.RunTest(L"OpenFile %SystemRoot%\\System32"));
  EXPECT_EQ(SBOX_TEST_DENIED,
      runner.RunTest(L"OpenFile %SystemRoot%\\explorer.exe"));
  EXPECT_EQ(SBOX_TEST_DENIED,
      runner.RunTest(L"OpenFile %SystemRoot%\\Cursors\\arrow_i.cur"));
  EXPECT_EQ(SBOX_TEST_DENIED,
      runner.RunTest(L"OpenFile %AllUsersProfile%"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenFile %Temp%"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenFile %AppData%"));
}

// Tests if the registry is correctly protected by the sandbox.
TEST(ValidationSuite, TestRegistry) {
  TestRunner runner;
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenKey HKLM"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenKey HKCU"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenKey HKU"));
  EXPECT_EQ(SBOX_TEST_DENIED,
      runner.RunTest(
          L"OpenKey HKLM "
          L"\"Software\\Microsoft\\Windows NT\\CurrentVersion\\WinLogon\""));
}

// Tests that the permissions on the Windowstation does not allow the sandbox
// to get to the interactive desktop or to make the sbox desktop interactive.
TEST(ValidationSuite, TestDesktop) {
  TestRunner runner;
  runner.GetPolicy()->SetAlternateDesktop(true);
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"OpenInteractiveDesktop NULL"));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"SwitchToSboxDesktop NULL"));
}

// Tests that the permissions on the Windowstation does not allow the sandbox
// to get to the interactive desktop or to make the sbox desktop interactive.
TEST(ValidationSuite, TestAlternateDesktop) {
  base::win::Version version = base::win::GetVersion();
  if (version < base::win::VERSION_WIN7)
    return;

  TestRunner runner;
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"EnumAlternateWinsta NULL"));

  wchar_t command[1024] = {0};
  runner.SetTimeout(3600000);
  runner.GetPolicy()->SetAlternateDesktop(true);
  runner.GetPolicy()->SetDelayedIntegrityLevel(INTEGRITY_LEVEL_UNTRUSTED);
  base::string16 desktop_name = runner.GetPolicy()->GetAlternateDesktop();
  desktop_name = desktop_name.substr(desktop_name.find('\\') + 1);
  wsprintf(command, L"OpenAlternateDesktop %lS", desktop_name.c_str());
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command));
}

// Tests if the windows are correctly protected by the sandbox.
TEST(ValidationSuite, TestWindows) {
  TestRunner runner;
  wchar_t command[1024] = {0};

  wsprintf(command, L"ValidWindow %d", ::GetDesktopWindow());
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command));

  wsprintf(command, L"ValidWindow %d", ::FindWindow(NULL, NULL));
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command));
}

// Tests that a locked-down process cannot open another locked-down process.
TEST(ValidationSuite, TestProcessDenyLockdown) {
  TestRunner runner;
  TestRunner target;
  wchar_t command[1024] = {0};

  target.SetAsynchronous(true);

  EXPECT_EQ(SBOX_TEST_SUCCEEDED, target.RunTest(L"SleepCmd 30000"));

  TestProcessAccess(&runner, target.process_id());
}

// Tests that a low-integrity process cannot open a locked-down process (due
// to the integrity label changing after startup via SetDelayedIntegrityLevel).
TEST(ValidationSuite, TestProcessDenyLowIntegrity) {
  // This test applies only to Vista and above.
  if (base::win::Version() < base::win::VERSION_VISTA)
    return;

  TestRunner runner;
  TestRunner target;
  wchar_t command[1024] = {0};

  target.SetAsynchronous(true);
  target.GetPolicy()->SetDelayedIntegrityLevel(INTEGRITY_LEVEL_LOW);

  runner.GetPolicy()->SetIntegrityLevel(INTEGRITY_LEVEL_LOW);
  runner.GetPolicy()->SetTokenLevel(USER_RESTRICTED_SAME_ACCESS,
                                    USER_INTERACTIVE);

  EXPECT_EQ(SBOX_TEST_SUCCEEDED, target.RunTest(L"SleepCmd 30000"));

  TestProcessAccess(&runner, target.process_id());
}

// Tests that a locked-down process cannot open a low-integrity process.
TEST(ValidationSuite, TestProcessDenyBelowLowIntegrity) {
  //  This test applies only to Vista and above.
  if (base::win::Version() < base::win::VERSION_VISTA)
    return;

  TestRunner runner;
  TestRunner target;
  wchar_t command[1024] = {0};

  target.SetAsynchronous(true);
  target.GetPolicy()->SetIntegrityLevel(INTEGRITY_LEVEL_LOW);
  target.GetPolicy()->SetTokenLevel(USER_RESTRICTED_SAME_ACCESS,
                                    USER_INTERACTIVE);

  runner.GetPolicy()->SetDelayedIntegrityLevel(INTEGRITY_LEVEL_UNTRUSTED);
  runner.GetPolicy()->SetTokenLevel(USER_RESTRICTED_SAME_ACCESS,
                                    USER_INTERACTIVE);

  EXPECT_EQ(SBOX_TEST_SUCCEEDED, target.RunTest(L"SleepCmd 30000"));

  TestProcessAccess(&runner, target.process_id());
}

// Tests if the threads are correctly protected by the sandbox.
TEST(ValidationSuite, TestThread) {
  TestRunner runner;
  wchar_t command[1024] = {0};

  wsprintf(command, L"OpenThreadCmd %d", ::GetCurrentThreadId());
  EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command));
}

}  // namespace sandbox

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