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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "sandbox/sandbox_poc/pocdll/exports.h"
#include "sandbox/sandbox_poc/pocdll/utils.h"
// This file contains the tests used to verify the security of the file system.
// Tries to open a file and outputs the result.
// "path" can contain environment variables.
// "output" is the stream for the logging.
void TryOpenFile(wchar_t *path, FILE *output) {
wchar_t path_expanded[MAX_PATH] = {0};
DWORD size = ::ExpandEnvironmentStrings(path, path_expanded, MAX_PATH - 1);
if (!size) {
fprintf(output, "[ERROR] Cannot expand \"%S\". Error %S.\r\n", path,
::GetLastError());
}
HANDLE file;
file = ::CreateFile(path_expanded,
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL, // No security attributes
OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS,
NULL); // No template
if (file && INVALID_HANDLE_VALUE != file) {
fprintf(output, "[GRANTED] Opening file \"%S\". Handle 0x%p\r\n", path,
file);
::CloseHandle(file);
} else {
fprintf(output, "[BLOCKED] Opening file \"%S\". Error %d.\r\n", path,
::GetLastError());
}
}
void POCDLL_API TestFileSystem(HANDLE log) {
HandleToFile handle2file;
FILE *output = handle2file.Translate(log, "w");
TryOpenFile(L"%SystemDrive%", output);
TryOpenFile(L"%SystemRoot%", output);
TryOpenFile(L"%ProgramFiles%", output);
TryOpenFile(L"%SystemRoot%\\System32", output);
TryOpenFile(L"%SystemRoot%\\explorer.exe", output);
TryOpenFile(L"%SystemRoot%\\Cursors\\arrow_i.cur", output);
TryOpenFile(L"%AllUsersProfile%", output);
TryOpenFile(L"%UserProfile%", output);
TryOpenFile(L"%Temp%", output);
TryOpenFile(L"%AppData%", output);
}
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