| // Copyright (c) 2014 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/win/windows_version.h" |
| #include "sandbox/win/src/handle_closer.h" |
| #include "sandbox/win/src/sandbox.h" |
| #include "sandbox/win/src/sandbox_policy.h" |
| #include "sandbox/win/src/sandbox_factory.h" |
| #include "sandbox/win/tests/common/controller.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace sandbox { |
| |
| |
| SBOX_TESTS_COMMAND int NamedPipe_Create(int argc, wchar_t **argv) { |
| if (argc < 1 || argc > 2) { |
| return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; |
| } |
| if ((NULL == argv) || (NULL == argv[0])) { |
| return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; |
| } |
| |
| HANDLE pipe = ::CreateNamedPipeW(argv[0], |
| PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, |
| PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 1, 4096, |
| 4096, 2000, NULL); |
| if (INVALID_HANDLE_VALUE == pipe) |
| return SBOX_TEST_DENIED; |
| |
| // The second parameter allows us to enforce a whitelist for where the |
| // pipe should be in the object namespace after creation. |
| if (argc == 2) { |
| base::string16 handle_name; |
| if (GetHandleName(pipe, &handle_name)) { |
| if (handle_name.compare(0, wcslen(argv[1]), argv[1]) != 0) |
| return SBOX_TEST_FAILED; |
| } else { |
| return SBOX_TEST_FAILED; |
| } |
| } |
| |
| OVERLAPPED overlapped = {0}; |
| overlapped.hEvent = ::CreateEvent(NULL, TRUE, TRUE, NULL); |
| BOOL result = ::ConnectNamedPipe(pipe, &overlapped); |
| |
| if (!result) { |
| DWORD error = ::GetLastError(); |
| if (ERROR_PIPE_CONNECTED != error && |
| ERROR_IO_PENDING != error) { |
| return SBOX_TEST_FAILED; |
| } |
| } |
| |
| if (!::CloseHandle(pipe)) |
| return SBOX_TEST_FAILED; |
| |
| ::CloseHandle(overlapped.hEvent); |
| return SBOX_TEST_SUCCEEDED; |
| } |
| |
| // Tests if we can create a pipe in the sandbox. |
| TEST(NamedPipePolicyTest, CreatePipe) { |
| TestRunner runner; |
| // TODO(nsylvain): This policy is wrong because "*" is a valid char in a |
| // namedpipe name. Here we apply it like a wildcard. http://b/893603 |
| EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_NAMED_PIPES, |
| TargetPolicy::NAMEDPIPES_ALLOW_ANY, |
| L"\\\\.\\pipe\\test*")); |
| |
| EXPECT_EQ(SBOX_TEST_SUCCEEDED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\testbleh")); |
| |
| // On XP, the sandbox can create a pipe without any help but it fails on |
| // Vista+, this is why we do not test the "denied" case. |
| if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_VISTA) { |
| EXPECT_EQ(SBOX_TEST_DENIED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\bleh")); |
| } |
| } |
| |
| // Tests if we can create a pipe with a path traversal in the sandbox. |
| TEST(NamedPipePolicyTest, CreatePipeTraversal) { |
| TestRunner runner; |
| // TODO(nsylvain): This policy is wrong because "*" is a valid char in a |
| // namedpipe name. Here we apply it like a wildcard. http://b/893603 |
| EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_NAMED_PIPES, |
| TargetPolicy::NAMEDPIPES_ALLOW_ANY, |
| L"\\\\.\\pipe\\test*")); |
| |
| // On XP, the sandbox can create a pipe without any help but it fails on |
| // Vista+, this is why we do not test the "denied" case. |
| if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_VISTA) { |
| EXPECT_EQ(SBOX_TEST_DENIED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\test\\..\\bleh")); |
| EXPECT_EQ(SBOX_TEST_DENIED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\test/../bleh")); |
| EXPECT_EQ(SBOX_TEST_DENIED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\test\\../bleh")); |
| EXPECT_EQ(SBOX_TEST_DENIED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\test/..\\bleh")); |
| } |
| } |
| |
| // This tests that path canonicalization is actually disabled if we use \\?\ |
| // syntax. |
| TEST(NamedPipePolicyTest, CreatePipeCanonicalization) { |
| // "For file I/O, the "\\?\" prefix to a path string tells the Windows APIs to |
| // disable all string parsing and to send the string that follows it straight |
| // to the file system." |
| // http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx |
| wchar_t* argv[2] = { L"\\\\?\\pipe\\test\\..\\bleh", |
| L"\\Device\\NamedPipe\\test" }; |
| EXPECT_EQ(SBOX_TEST_SUCCEEDED, NamedPipe_Create(2, argv)); |
| } |
| |
| // The same test as CreatePipe but this time using strict interceptions. |
| TEST(NamedPipePolicyTest, CreatePipeStrictInterceptions) { |
| TestRunner runner; |
| runner.GetPolicy()->SetStrictInterceptions(); |
| |
| // TODO(nsylvain): This policy is wrong because "*" is a valid char in a |
| // namedpipe name. Here we apply it like a wildcard. http://b/893603 |
| EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_NAMED_PIPES, |
| TargetPolicy::NAMEDPIPES_ALLOW_ANY, |
| L"\\\\.\\pipe\\test*")); |
| |
| EXPECT_EQ(SBOX_TEST_SUCCEEDED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\testbleh")); |
| |
| // On XP, the sandbox can create a pipe without any help but it fails on |
| // Vista+, this is why we do not test the "denied" case. |
| if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_VISTA) { |
| EXPECT_EQ(SBOX_TEST_DENIED, |
| runner.RunTest(L"NamedPipe_Create \\\\.\\pipe\\bleh")); |
| } |
| } |
| |
| } // namespace sandbox |