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| 1 // Copyright (c) 2006-2008 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 "sandbox/sandbox_poc/pocdll/exports.h" | |
| 6 #include "sandbox/sandbox_poc/pocdll/utils.h" | |
| 7 | |
| 8 // This file contains the tests used to verify the security of the file system. | |
| 9 | |
| 10 // Tries to open a file and outputs the result. | |
| 11 // "path" can contain environment variables. | |
| 12 // "output" is the stream for the logging. | |
| 13 void TryOpenFile(wchar_t *path, FILE *output) { | |
| 14 wchar_t path_expanded[MAX_PATH] = {0}; | |
| 15 DWORD size = ::ExpandEnvironmentStrings(path, path_expanded, MAX_PATH - 1); | |
| 16 if (!size) { | |
| 17 fprintf(output, "[ERROR] Cannot expand \"%S\". Error %S.\r\n", path, | |
| 18 ::GetLastError()); | |
| 19 } | |
| 20 | |
| 21 HANDLE file; | |
| 22 file = ::CreateFile(path_expanded, | |
| 23 GENERIC_READ, | |
| 24 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, | |
| 25 NULL, // No security attributes | |
| 26 OPEN_EXISTING, | |
| 27 FILE_FLAG_BACKUP_SEMANTICS, | |
| 28 NULL); // No template | |
| 29 | |
| 30 if (file && INVALID_HANDLE_VALUE != file) { | |
| 31 fprintf(output, "[GRANTED] Opening file \"%S\". Handle 0x%p\r\n", path, | |
| 32 file); | |
| 33 ::CloseHandle(file); | |
| 34 } else { | |
| 35 fprintf(output, "[BLOCKED] Opening file \"%S\". Error %d.\r\n", path, | |
| 36 ::GetLastError()); | |
| 37 } | |
| 38 } | |
| 39 | |
| 40 void POCDLL_API TestFileSystem(HANDLE log) { | |
| 41 HandleToFile handle2file; | |
| 42 FILE *output = handle2file.Translate(log, "w"); | |
| 43 | |
| 44 TryOpenFile(L"%SystemDrive%", output); | |
| 45 TryOpenFile(L"%SystemRoot%", output); | |
| 46 TryOpenFile(L"%ProgramFiles%", output); | |
| 47 TryOpenFile(L"%SystemRoot%\\System32", output); | |
| 48 TryOpenFile(L"%SystemRoot%\\explorer.exe", output); | |
| 49 TryOpenFile(L"%SystemRoot%\\Cursors\\arrow_i.cur", output); | |
| 50 TryOpenFile(L"%AllUsersProfile%", output); | |
| 51 TryOpenFile(L"%UserProfile%", output); | |
| 52 TryOpenFile(L"%Temp%", output); | |
| 53 TryOpenFile(L"%AppData%", output); | |
| 54 } | |
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