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// Copyright (c) 2012 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/process/process_info.h"
#include <windows.h>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "base/win/scoped_handle.h"
#include "base/win/windows_version.h"
namespace base {
// static
const Time CurrentProcessInfo::CreationTime() {
FILETIME creation_time = {};
FILETIME ignore = {};
if (::GetProcessTimes(::GetCurrentProcess(), &creation_time, &ignore,
&ignore, &ignore) == false)
return Time();
return Time::FromFileTime(creation_time);
}
IntegrityLevel GetCurrentProcessIntegrityLevel() {
if (win::GetVersion() < base::win::VERSION_VISTA)
return INTEGRITY_UNKNOWN;
HANDLE process_token;
if (!::OpenProcessToken(::GetCurrentProcess(),
TOKEN_QUERY | TOKEN_QUERY_SOURCE, &process_token)) {
return INTEGRITY_UNKNOWN;
}
win::ScopedHandle scoped_process_token(process_token);
DWORD token_info_length = 0;
if (::GetTokenInformation(process_token, TokenIntegrityLevel, NULL, 0,
&token_info_length) ||
::GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
return INTEGRITY_UNKNOWN;
}
scoped_ptr<char[]> token_label_bytes(new char[token_info_length]);
if (!token_label_bytes.get())
return INTEGRITY_UNKNOWN;
TOKEN_MANDATORY_LABEL* token_label =
reinterpret_cast<TOKEN_MANDATORY_LABEL*>(token_label_bytes.get());
if (!token_label)
return INTEGRITY_UNKNOWN;
if (!::GetTokenInformation(process_token, TokenIntegrityLevel, token_label,
token_info_length, &token_info_length)) {
return INTEGRITY_UNKNOWN;
}
DWORD integrity_level = *::GetSidSubAuthority(
token_label->Label.Sid,
static_cast<DWORD>(*::GetSidSubAuthorityCount(token_label->Label.Sid)-1));
if (integrity_level < SECURITY_MANDATORY_MEDIUM_RID)
return LOW_INTEGRITY;
if (integrity_level >= SECURITY_MANDATORY_MEDIUM_RID &&
integrity_level < SECURITY_MANDATORY_HIGH_RID) {
return MEDIUM_INTEGRITY;
}
if (integrity_level >= SECURITY_MANDATORY_HIGH_RID)
return HIGH_INTEGRITY;
NOTREACHED();
return INTEGRITY_UNKNOWN;
}
} // namespace base
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