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100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/process/process_info.h"
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#include <windows.h>
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#include "base/logging.h"
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#include "base/memory/ptr_util.h"
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#include "base/time/time.h"
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#include "base/win/scoped_handle.h"
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namespace base {
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namespace {
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base::win::ScopedHandle GetCurrentProcessToken() {
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HANDLE process_token;
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BOOL result =
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OpenProcessToken(::GetCurrentProcess(), TOKEN_QUERY, &process_token);
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// These checks are turned on in release builds to debug
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// https://bugs.chromium.org/p/chromium/issues/detail?id=748431.
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PCHECK(result);
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CHECK(process_token != NULL);
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CHECK(process_token != INVALID_HANDLE_VALUE);
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return base::win::ScopedHandle(process_token);
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}
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} // namespace
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// static
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const Time CurrentProcessInfo::CreationTime() {
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FILETIME creation_time = {};
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FILETIME ignore1 = {};
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FILETIME ignore2 = {};
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FILETIME ignore3 = {};
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if (!::GetProcessTimes(::GetCurrentProcess(), &creation_time, &ignore1,
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&ignore2, &ignore3)) {
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return Time();
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}
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return Time::FromFileTime(creation_time);
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}
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IntegrityLevel GetCurrentProcessIntegrityLevel() {
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base::win::ScopedHandle scoped_process_token(GetCurrentProcessToken());
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DWORD token_info_length = 0;
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if (::GetTokenInformation(scoped_process_token.Get(), TokenIntegrityLevel,
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nullptr, 0, &token_info_length) ||
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::GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
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return INTEGRITY_UNKNOWN;
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}
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auto token_label_bytes = std::make_unique<char[]>(token_info_length);
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TOKEN_MANDATORY_LABEL* token_label =
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reinterpret_cast<TOKEN_MANDATORY_LABEL*>(token_label_bytes.get());
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if (!::GetTokenInformation(scoped_process_token.Get(), TokenIntegrityLevel,
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token_label, token_info_length,
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&token_info_length)) {
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return INTEGRITY_UNKNOWN;
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}
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DWORD integrity_level = *::GetSidSubAuthority(
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token_label->Label.Sid,
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static_cast<DWORD>(*::GetSidSubAuthorityCount(token_label->Label.Sid) -
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1));
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if (integrity_level < SECURITY_MANDATORY_MEDIUM_RID)
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return LOW_INTEGRITY;
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if (integrity_level >= SECURITY_MANDATORY_MEDIUM_RID &&
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integrity_level < SECURITY_MANDATORY_HIGH_RID) {
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return MEDIUM_INTEGRITY;
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}
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if (integrity_level >= SECURITY_MANDATORY_HIGH_RID)
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return HIGH_INTEGRITY;
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NOTREACHED();
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return INTEGRITY_UNKNOWN;
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}
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bool IsCurrentProcessElevated() {
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base::win::ScopedHandle scoped_process_token(GetCurrentProcessToken());
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// Unlike TOKEN_ELEVATION_TYPE which returns TokenElevationTypeDefault when
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// UAC is turned off, TOKEN_ELEVATION returns whether the process is elevated.
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DWORD size;
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TOKEN_ELEVATION elevation;
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if (!GetTokenInformation(scoped_process_token.Get(), TokenElevation,
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&elevation, sizeof(elevation), &size)) {
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PLOG(ERROR) << "GetTokenInformation() failed";
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return false;
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}
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return !!elevation.TokenIsElevated;
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}
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} // namespace base
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