1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <algorithm> 6 #include <cctype> 7 8 #include <windows.h> 9 #include <winioctl.h> 10 11 #include "base/win/scoped_handle.h" 12 #include "sandbox/win/src/nt_internals.h" 13 #include "sandbox/win/src/sandbox.h" 14 #include "sandbox/win/src/sandbox_factory.h" 15 #include "sandbox/win/src/sandbox_policy.h" 16 #include "sandbox/win/src/win_utils.h" 17 #include "sandbox/win/tests/common/controller.h" 18 #include "sandbox/win/tests/common/test_utils.h" 19 #include "testing/gtest/include/gtest/gtest.h" 20 21 #define BINDNTDLL(name) \ 22 name ## Function name = reinterpret_cast<name ## Function>( \ 23 ::GetProcAddress(::GetModuleHandle(L"ntdll.dll"), #name)) 24 25 namespace sandbox { 26 27 const ULONG kSharing = FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE; 28 29 // Creates a file using different desired access. Returns if the call succeeded 30 // or not. The first argument in argv is the filename. If the second argument 31 // is "read", we try read only access. Otherwise we try read-write access. 32 SBOX_TESTS_COMMAND int File_Create(int argc, wchar_t **argv) { 33 if (argc != 2) 34 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 35 36 bool read = (_wcsicmp(argv[0], L"Read") == 0); 37 38 if (read) { 39 base::win::ScopedHandle file1(CreateFile( 40 argv[1], GENERIC_READ, kSharing, NULL, OPEN_EXISTING, 0, NULL)); 41 base::win::ScopedHandle file2(CreateFile( 42 argv[1], FILE_EXECUTE, kSharing, NULL, OPEN_EXISTING, 0, NULL)); 43 44 if (file1.Get() && file2.Get()) 45 return SBOX_TEST_SUCCEEDED; 46 return SBOX_TEST_DENIED; 47 } else { 48 base::win::ScopedHandle file1(CreateFile( 49 argv[1], GENERIC_ALL, kSharing, NULL, OPEN_EXISTING, 0, NULL)); 50 base::win::ScopedHandle file2(CreateFile( 51 argv[1], GENERIC_READ | FILE_WRITE_DATA, kSharing, NULL, OPEN_EXISTING, 52 0, NULL)); 53 54 if (file1.Get() && file2.Get()) 55 return SBOX_TEST_SUCCEEDED; 56 return SBOX_TEST_DENIED; 57 } 58 } 59 60 SBOX_TESTS_COMMAND int File_Win32Create(int argc, wchar_t **argv) { 61 if (argc != 1) { 62 SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 63 } 64 65 std::wstring full_path = MakePathToSys(argv[0], false); 66 if (full_path.empty()) { 67 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 68 } 69 70 HANDLE file = ::CreateFileW(full_path.c_str(), GENERIC_READ, kSharing, 71 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); 72 73 if (INVALID_HANDLE_VALUE != file) { 74 ::CloseHandle(file); 75 return SBOX_TEST_SUCCEEDED; 76 } else { 77 if (ERROR_ACCESS_DENIED == ::GetLastError()) { 78 return SBOX_TEST_DENIED; 79 } else { 80 return SBOX_TEST_FAILED; 81 } 82 } 83 return SBOX_TEST_SUCCEEDED; 84 } 85 86 // Creates the file in parameter using the NtCreateFile api and returns if the 87 // call succeeded or not. 88 SBOX_TESTS_COMMAND int File_CreateSys32(int argc, wchar_t **argv) { 89 BINDNTDLL(NtCreateFile); 90 BINDNTDLL(RtlInitUnicodeString); 91 if (!NtCreateFile || !RtlInitUnicodeString) 92 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 93 94 if (argc != 1) 95 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 96 97 std::wstring file(argv[0]); 98 if (0 != _wcsnicmp(file.c_str(), kNTObjManPrefix, kNTObjManPrefixLen)) 99 file = MakePathToSys(argv[0], true); 100 101 UNICODE_STRING object_name; 102 RtlInitUnicodeString(&object_name, file.c_str()); 103 104 OBJECT_ATTRIBUTES obj_attributes = {0}; 105 InitializeObjectAttributes(&obj_attributes, &object_name, 106 OBJ_CASE_INSENSITIVE, NULL, NULL); 107 108 HANDLE handle; 109 IO_STATUS_BLOCK io_block = {0}; 110 NTSTATUS status = NtCreateFile(&handle, FILE_READ_DATA, &obj_attributes, 111 &io_block, NULL, 0, kSharing, FILE_OPEN, 112 0, NULL, 0); 113 if (NT_SUCCESS(status)) { 114 ::CloseHandle(handle); 115 return SBOX_TEST_SUCCEEDED; 116 } else if (STATUS_ACCESS_DENIED == status) { 117 return SBOX_TEST_DENIED; 118 } else if (STATUS_OBJECT_NAME_NOT_FOUND == status) { 119 return SBOX_TEST_NOT_FOUND; 120 } 121 return SBOX_TEST_FAILED; 122 } 123 124 // Opens the file in parameter using the NtOpenFile api and returns if the 125 // call succeeded or not. 126 SBOX_TESTS_COMMAND int File_OpenSys32(int argc, wchar_t **argv) { 127 BINDNTDLL(NtOpenFile); 128 BINDNTDLL(RtlInitUnicodeString); 129 if (!NtOpenFile || !RtlInitUnicodeString) 130 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 131 132 if (argc != 1) 133 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 134 135 std::wstring file = MakePathToSys(argv[0], true); 136 UNICODE_STRING object_name; 137 RtlInitUnicodeString(&object_name, file.c_str()); 138 139 OBJECT_ATTRIBUTES obj_attributes = {0}; 140 InitializeObjectAttributes(&obj_attributes, &object_name, 141 OBJ_CASE_INSENSITIVE, NULL, NULL); 142 143 HANDLE handle; 144 IO_STATUS_BLOCK io_block = {0}; 145 NTSTATUS status = NtOpenFile(&handle, FILE_READ_DATA, &obj_attributes, 146 &io_block, kSharing, 0); 147 if (NT_SUCCESS(status)) { 148 ::CloseHandle(handle); 149 return SBOX_TEST_SUCCEEDED; 150 } else if (STATUS_ACCESS_DENIED == status) { 151 return SBOX_TEST_DENIED; 152 } else if (STATUS_OBJECT_NAME_NOT_FOUND == status) { 153 return SBOX_TEST_NOT_FOUND; 154 } 155 return SBOX_TEST_FAILED; 156 } 157 158 SBOX_TESTS_COMMAND int File_GetDiskSpace(int argc, wchar_t **argv) { 159 std::wstring sys_path = MakePathToSys(L"", false); 160 if (sys_path.empty()) { 161 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 162 } 163 ULARGE_INTEGER free_user = {0}; 164 ULARGE_INTEGER total = {0}; 165 ULARGE_INTEGER free_total = {0}; 166 if (::GetDiskFreeSpaceExW(sys_path.c_str(), &free_user, &total, 167 &free_total)) { 168 if ((total.QuadPart != 0) && (free_total.QuadPart !=0)) { 169 return SBOX_TEST_SUCCEEDED; 170 } 171 } else { 172 if (ERROR_ACCESS_DENIED == ::GetLastError()) { 173 return SBOX_TEST_DENIED; 174 } else { 175 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 176 } 177 } 178 return SBOX_TEST_SUCCEEDED; 179 } 180 181 // Move a file using the MoveFileEx api and returns if the call succeeded or 182 // not. 183 SBOX_TESTS_COMMAND int File_Rename(int argc, wchar_t **argv) { 184 if (argc != 2) 185 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 186 187 if (::MoveFileEx(argv[0], argv[1], 0)) 188 return SBOX_TEST_SUCCEEDED; 189 190 if (::GetLastError() != ERROR_ACCESS_DENIED) 191 return SBOX_TEST_FAILED; 192 193 return SBOX_TEST_DENIED; 194 } 195 196 // Query the attributes of file in parameter using the NtQueryAttributesFile api 197 // and NtQueryFullAttributesFile and returns if the call succeeded or not. The 198 // second argument in argv is "d" or "f" telling if we expect the attributes to 199 // specify a file or a directory. The expected attribute has to match the real 200 // attributes for the call to be successful. 201 SBOX_TESTS_COMMAND int File_QueryAttributes(int argc, wchar_t **argv) { 202 BINDNTDLL(NtQueryAttributesFile); 203 BINDNTDLL(NtQueryFullAttributesFile); 204 BINDNTDLL(RtlInitUnicodeString); 205 if (!NtQueryAttributesFile || !NtQueryFullAttributesFile || 206 !RtlInitUnicodeString) 207 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 208 209 if (argc != 2) 210 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND; 211 212 bool expect_directory = (L'd' == argv[1][0]); 213 214 UNICODE_STRING object_name; 215 std::wstring file = MakePathToSys(argv[0], true); 216 RtlInitUnicodeString(&object_name, file.c_str()); 217 218 OBJECT_ATTRIBUTES obj_attributes = {0}; 219 InitializeObjectAttributes(&obj_attributes, &object_name, 220 OBJ_CASE_INSENSITIVE, NULL, NULL); 221 222 FILE_BASIC_INFORMATION info = {0}; 223 FILE_NETWORK_OPEN_INFORMATION full_info = {0}; 224 NTSTATUS status1 = NtQueryAttributesFile(&obj_attributes, &info); 225 NTSTATUS status2 = NtQueryFullAttributesFile(&obj_attributes, &full_info); 226 227 if (status1 != status2) 228 return SBOX_TEST_FAILED; 229 230 if (NT_SUCCESS(status1)) { 231 if (info.FileAttributes != full_info.FileAttributes) 232 return SBOX_TEST_FAILED; 233 234 bool is_directory1 = (info.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0; 235 if (expect_directory == is_directory1) 236 return SBOX_TEST_SUCCEEDED; 237 } else if (STATUS_ACCESS_DENIED == status1) { 238 return SBOX_TEST_DENIED; 239 } else if (STATUS_OBJECT_NAME_NOT_FOUND == status1) { 240 return SBOX_TEST_NOT_FOUND; 241 } 242 243 return SBOX_TEST_FAILED; 244 } 245 246 TEST(FilePolicyTest, DenyNtCreateCalc) { 247 TestRunner runner; 248 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_DIR_ANY, 249 L"calc.exe")); 250 251 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_CreateSys32 calc.exe")); 252 253 runner.SetTestState(BEFORE_REVERT); 254 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_CreateSys32 calc.exe")); 255 } 256 257 TEST(FilePolicyTest, AllowNtCreateCalc) { 258 TestRunner runner; 259 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, L"calc.exe")); 260 261 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_CreateSys32 calc.exe")); 262 263 runner.SetTestState(BEFORE_REVERT); 264 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_CreateSys32 calc.exe")); 265 } 266 267 TEST(FilePolicyTest, AllowNtCreateWithNativePath) { 268 std::wstring calc = MakePathToSys(L"calc.exe", false); 269 std::wstring nt_path; 270 ASSERT_TRUE(GetNtPathFromWin32Path(calc, &nt_path)); 271 TestRunner runner; 272 runner.AddFsRule(TargetPolicy::FILES_ALLOW_READONLY, nt_path.c_str()); 273 274 wchar_t buff[MAX_PATH]; 275 ::wsprintfW(buff, L"File_CreateSys32 %s", nt_path.c_str()); 276 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(buff)); 277 278 std::transform(nt_path.begin(), nt_path.end(), nt_path.begin(), std::tolower); 279 ::wsprintfW(buff, L"File_CreateSys32 %s", nt_path.c_str()); 280 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(buff)); 281 } 282 283 TEST(FilePolicyTest, AllowReadOnly) { 284 TestRunner runner; 285 286 // Create a temp file because we need write access to it. 287 wchar_t temp_directory[MAX_PATH]; 288 wchar_t temp_file_name[MAX_PATH]; 289 ASSERT_NE(::GetTempPath(MAX_PATH, temp_directory), 0u); 290 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name), 0u); 291 292 EXPECT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_READONLY, 293 temp_file_name)); 294 295 wchar_t command_read[MAX_PATH + 20] = {0}; 296 wsprintf(command_read, L"File_Create Read \"%ls\"", temp_file_name); 297 wchar_t command_write[MAX_PATH + 20] = {0}; 298 wsprintf(command_write, L"File_Create Write \"%ls\"", temp_file_name); 299 300 // Verify that we have read access after revert. 301 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command_read)); 302 303 // Verify that we don't have write access after revert. 304 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command_write)); 305 306 // Verify that we really have write access to the file. 307 runner.SetTestState(BEFORE_REVERT); 308 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command_write)); 309 310 DeleteFile(temp_file_name); 311 } 312 313 TEST(FilePolicyTest, AllowWildcard) { 314 TestRunner runner; 315 316 // Create a temp file because we need write access to it. 317 wchar_t temp_directory[MAX_PATH]; 318 wchar_t temp_file_name[MAX_PATH]; 319 ASSERT_NE(::GetTempPath(MAX_PATH, temp_directory), 0u); 320 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name), 0u); 321 322 wcscat_s(temp_directory, MAX_PATH, L"*"); 323 EXPECT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, temp_directory)); 324 325 wchar_t command_write[MAX_PATH + 20] = {0}; 326 wsprintf(command_write, L"File_Create Write \"%ls\"", temp_file_name); 327 328 // Verify that we have write access after revert. 329 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command_write)); 330 331 DeleteFile(temp_file_name); 332 } 333 334 TEST(FilePolicyTest, AllowNtCreatePatternRule) { 335 TestRunner runner; 336 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, L"App*.dll")); 337 338 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 339 runner.RunTest(L"File_OpenSys32 appmgmts.dll")); 340 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_OpenSys32 appwiz.cpl")); 341 342 runner.SetTestState(BEFORE_REVERT); 343 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 344 runner.RunTest(L"File_OpenSys32 appmgmts.dll")); 345 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_OpenSys32 appwiz.cpl")); 346 } 347 348 TEST(FilePolicyTest, CheckNotFound) { 349 TestRunner runner; 350 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, L"n*.dll")); 351 352 EXPECT_EQ(SBOX_TEST_NOT_FOUND, 353 runner.RunTest(L"File_OpenSys32 notfound.dll")); 354 } 355 356 TEST(FilePolicyTest, CheckNoLeak) { 357 TestRunner runner; 358 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_CreateSys32 notfound.exe")); 359 } 360 361 TEST(FilePolicyTest, TestQueryAttributesFile) { 362 TestRunner runner; 363 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, 364 L"appmgmts.dll")); 365 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, 366 L"notfound.exe")); 367 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, L"drivers")); 368 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_QUERY, 369 L"ipconfig.exe")); 370 371 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 372 runner.RunTest(L"File_QueryAttributes drivers d")); 373 374 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 375 runner.RunTest(L"File_QueryAttributes appmgmts.dll f")); 376 377 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 378 runner.RunTest(L"File_QueryAttributes ipconfig.exe f")); 379 380 EXPECT_EQ(SBOX_TEST_DENIED, 381 runner.RunTest(L"File_QueryAttributes ftp.exe f")); 382 383 EXPECT_EQ(SBOX_TEST_NOT_FOUND, 384 runner.RunTest(L"File_QueryAttributes notfound.exe f")); 385 } 386 387 // Makes sure that we don't leak information when there is not policy to allow 388 // a path. 389 TEST(FilePolicyTest, TestQueryAttributesFileNoPolicy) { 390 TestRunner runner; 391 EXPECT_EQ(SBOX_TEST_DENIED, 392 runner.RunTest(L"File_QueryAttributes ftp.exe f")); 393 394 EXPECT_EQ(SBOX_TEST_DENIED, 395 runner.RunTest(L"File_QueryAttributes notfound.exe f")); 396 } 397 398 TEST(FilePolicyTest, TestRename) { 399 TestRunner runner; 400 401 // Give access to the temp directory. 402 wchar_t temp_directory[MAX_PATH]; 403 wchar_t temp_file_name1[MAX_PATH]; 404 wchar_t temp_file_name2[MAX_PATH]; 405 wchar_t temp_file_name3[MAX_PATH]; 406 wchar_t temp_file_name4[MAX_PATH]; 407 wchar_t temp_file_name5[MAX_PATH]; 408 wchar_t temp_file_name6[MAX_PATH]; 409 wchar_t temp_file_name7[MAX_PATH]; 410 wchar_t temp_file_name8[MAX_PATH]; 411 ASSERT_NE(::GetTempPath(MAX_PATH, temp_directory), 0u); 412 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name1), 0u); 413 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name2), 0u); 414 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name3), 0u); 415 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name4), 0u); 416 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name5), 0u); 417 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name6), 0u); 418 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name7), 0u); 419 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name8), 0u); 420 421 422 // Add rules to make file1->file2 succeed. 423 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, temp_file_name1)); 424 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, temp_file_name2)); 425 426 // Add rules to make file3->file4 fail. 427 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, temp_file_name3)); 428 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_READONLY, 429 temp_file_name4)); 430 431 // Add rules to make file5->file6 fail. 432 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_READONLY, 433 temp_file_name5)); 434 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, temp_file_name6)); 435 436 // Add rules to make file7->no_pol_file fail. 437 ASSERT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, temp_file_name7)); 438 439 // Delete the files where the files are going to be renamed to. 440 ::DeleteFile(temp_file_name2); 441 ::DeleteFile(temp_file_name4); 442 ::DeleteFile(temp_file_name6); 443 ::DeleteFile(temp_file_name8); 444 445 446 wchar_t command[MAX_PATH*2 + 20] = {0}; 447 wsprintf(command, L"File_Rename \"%ls\" \"%ls\"", temp_file_name1, 448 temp_file_name2); 449 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command)); 450 451 wsprintf(command, L"File_Rename \"%ls\" \"%ls\"", temp_file_name3, 452 temp_file_name4); 453 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command)); 454 455 wsprintf(command, L"File_Rename \"%ls\" \"%ls\"", temp_file_name5, 456 temp_file_name6); 457 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command)); 458 459 wsprintf(command, L"File_Rename \"%ls\" \"%ls\"", temp_file_name7, 460 temp_file_name8); 461 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command)); 462 463 464 // Delete all the files in case they are still there. 465 ::DeleteFile(temp_file_name1); 466 ::DeleteFile(temp_file_name2); 467 ::DeleteFile(temp_file_name3); 468 ::DeleteFile(temp_file_name4); 469 ::DeleteFile(temp_file_name5); 470 ::DeleteFile(temp_file_name6); 471 ::DeleteFile(temp_file_name7); 472 ::DeleteFile(temp_file_name8); 473 } 474 475 TEST(FilePolicyTest, OpenSys32FilesDenyBecauseOfDir) { 476 TestRunner runner; 477 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_DIR_ANY, 478 L"notepad.exe")); 479 480 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_Win32Create notepad.exe")); 481 482 runner.SetTestState(BEFORE_REVERT); 483 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 484 runner.RunTest(L"File_Win32Create notepad.exe")); 485 } 486 487 TEST(FilePolicyTest, OpenSys32FilesAllowNotepad) { 488 TestRunner runner; 489 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_ANY, 490 L"notepad.exe")); 491 492 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 493 runner.RunTest(L"File_Win32Create notepad.exe")); 494 495 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_Win32Create calc.exe")); 496 497 runner.SetTestState(BEFORE_REVERT); 498 EXPECT_EQ(SBOX_TEST_SUCCEEDED, 499 runner.RunTest(L"File_Win32Create notepad.exe")); 500 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_Win32Create calc.exe")); 501 } 502 503 TEST(FilePolicyTest, FileGetDiskSpace) { 504 TestRunner runner; 505 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_GetDiskSpace")); 506 runner.SetTestState(BEFORE_REVERT); 507 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_GetDiskSpace")); 508 509 // Add an 'allow' rule in the windows\system32 such that GetDiskFreeSpaceEx 510 // succeeds (it does an NtOpenFile) but windows\system32\notepad.exe is 511 // denied since there is no wild card in the rule. 512 EXPECT_TRUE(runner.AddRuleSys32(TargetPolicy::FILES_ALLOW_DIR_ANY, L"")); 513 runner.SetTestState(BEFORE_REVERT); 514 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_GetDiskSpace")); 515 516 runner.SetTestState(AFTER_REVERT); 517 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"File_GetDiskSpace")); 518 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"File_Win32Create notepad.exe")); 519 } 520 521 // http://crbug.com/146944 522 TEST(FilePolicyTest, DISABLED_TestReparsePoint) { 523 TestRunner runner; 524 525 // Create a temp file because we need write access to it. 526 wchar_t temp_directory[MAX_PATH]; 527 wchar_t temp_file_name[MAX_PATH]; 528 ASSERT_NE(::GetTempPath(MAX_PATH, temp_directory), 0u); 529 ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, temp_file_name), 0u); 530 531 // Delete the file and create a directory instead. 532 ASSERT_TRUE(::DeleteFile(temp_file_name)); 533 ASSERT_TRUE(::CreateDirectory(temp_file_name, NULL)); 534 535 // Create a temporary file in the subfolder. 536 std::wstring subfolder = temp_file_name; 537 std::wstring temp_file_title = subfolder.substr(subfolder.rfind(L"\\") + 1); 538 std::wstring temp_file = subfolder + L"\\file_" + temp_file_title; 539 540 HANDLE file = ::CreateFile(temp_file.c_str(), FILE_ALL_ACCESS, 541 FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, 542 CREATE_ALWAYS, 0, NULL); 543 ASSERT_TRUE(INVALID_HANDLE_VALUE != file); 544 ASSERT_TRUE(::CloseHandle(file)); 545 546 // Create a temporary file in the temp directory. 547 std::wstring temp_dir = temp_directory; 548 std::wstring temp_file_in_temp = temp_dir + L"file_" + temp_file_title; 549 file = ::CreateFile(temp_file_in_temp.c_str(), FILE_ALL_ACCESS, 550 FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, 551 CREATE_ALWAYS, 0, NULL); 552 ASSERT_TRUE(file != NULL); 553 ASSERT_TRUE(::CloseHandle(file)); 554 555 // Give write access to the temp directory. 556 std::wstring temp_dir_wildcard = temp_dir + L"*"; 557 EXPECT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_ANY, 558 temp_dir_wildcard.c_str())); 559 560 // Prepare the command to execute. 561 std::wstring command_write; 562 command_write += L"File_Create Write \""; 563 command_write += temp_file; 564 command_write += L"\""; 565 566 // Verify that we have write access to the original file 567 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(command_write.c_str())); 568 569 // Replace the subfolder by a reparse point to %temp%. 570 ::DeleteFile(temp_file.c_str()); 571 HANDLE dir = ::CreateFile(subfolder.c_str(), FILE_ALL_ACCESS, 572 FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, 573 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); 574 EXPECT_TRUE(INVALID_HANDLE_VALUE != dir); 575 576 std::wstring temp_dir_nt; 577 temp_dir_nt += L"\\??\\"; 578 temp_dir_nt += temp_dir; 579 EXPECT_TRUE(SetReparsePoint(dir, temp_dir_nt.c_str())); 580 EXPECT_TRUE(::CloseHandle(dir)); 581 582 // Try to open the file again. 583 EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(command_write.c_str())); 584 585 // Remove the reparse point. 586 dir = ::CreateFile(subfolder.c_str(), FILE_ALL_ACCESS, 587 FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 588 FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 589 NULL); 590 EXPECT_TRUE(INVALID_HANDLE_VALUE != dir); 591 EXPECT_TRUE(DeleteReparsePoint(dir)); 592 EXPECT_TRUE(::CloseHandle(dir)); 593 594 // Cleanup. 595 EXPECT_TRUE(::DeleteFile(temp_file_in_temp.c_str())); 596 EXPECT_TRUE(::RemoveDirectory(subfolder.c_str())); 597 } 598 599 } // namespace sandbox 600
