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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/src/sandbox_utils.h"
#include <windows.h>
#include "base/logging.h"
#include "sandbox/src/internal_types.h"
#include "sandbox/src/nt_internals.h"
namespace sandbox {
bool GetModuleHandleHelper(DWORD flags, const wchar_t* module_name,
HMODULE* module) {
DCHECK(module);
HMODULE kernel32_base = ::GetModuleHandle(kKerneldllName);
if (!kernel32_base) {
NOTREACHED();
return false;
}
GetModuleHandleExFunction get_module_handle_ex = reinterpret_cast<
GetModuleHandleExFunction>(::GetProcAddress(kernel32_base,
"GetModuleHandleExW"));
if (get_module_handle_ex) {
BOOL ret = get_module_handle_ex(flags, module_name, module);
return (ret ? true : false);
}
if (!flags) {
*module = ::LoadLibrary(module_name);
} else if (flags & GET_MODULE_HANDLE_EX_FLAG_PIN) {
NOTREACHED();
return false;
} else if (!(flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)) {
DCHECK((flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT) ==
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT);
*module = ::GetModuleHandle(module_name);
} else {
DCHECK((flags & (GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT |
GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)) ==
(GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT |
GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS));
MEMORY_BASIC_INFORMATION info = {0};
size_t returned = VirtualQuery(module_name, &info, sizeof(info));
if (sizeof(info) != returned)
return false;
*module = reinterpret_cast<HMODULE>(info.AllocationBase);
}
return true;
}
bool IsXPSP2OrLater() {
OSVERSIONINFOEX version = {0};
version.dwOSVersionInfoSize = sizeof(version);
if (!::GetVersionEx(reinterpret_cast<OSVERSIONINFO*>(&version))) {
NOTREACHED();
return false;
}
// Vista or later
if (version.dwMajorVersion > 5)
return true;
// 2k, xp or 2003
if (version.dwMajorVersion == 5) {
// 2003
if (version.dwMinorVersion > 1)
return true;
// 2000
if (version.dwMinorVersion == 0)
return false;
// Windows Xp Sp2 or later
if (version.wServicePackMajor >= 2)
return true;
}
return false;
}
void InitObjectAttribs(const std::wstring& name, ULONG attributes, HANDLE root,
OBJECT_ATTRIBUTES* obj_attr, UNICODE_STRING* uni_name) {
static RtlInitUnicodeStringFunction RtlInitUnicodeString;
if (!RtlInitUnicodeString) {
HMODULE ntdll = ::GetModuleHandle(kNtdllName);
RtlInitUnicodeString = reinterpret_cast<RtlInitUnicodeStringFunction>(
GetProcAddress(ntdll, "RtlInitUnicodeString"));
DCHECK(RtlInitUnicodeString);
}
RtlInitUnicodeString(uni_name, name.c_str());
InitializeObjectAttributes(obj_attr, uni_name, attributes, root, NULL);
}
}; // namespace sandbox
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