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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/updater/win/user_info.h"
#include <string>
#include "base/check.h"
#include "chrome/updater/util/win_util.h"
namespace updater {
namespace {
// Sid of NT AUTHORITY\SYSTEM user.
constexpr wchar_t kSystemPrincipalSid[] = L"S-1-5-18";
} // namespace
HRESULT GetProcessUser(std::wstring* name,
std::wstring* domain,
std::wstring* sid) {
CSid current_sid;
HRESULT hr = GetProcessUserSid(¤t_sid);
if (FAILED(hr)) {
return hr;
}
if (sid) {
*sid = current_sid.Sid();
}
if (name) {
*name = current_sid.AccountName();
}
if (domain) {
*domain = current_sid.Domain();
}
return S_OK;
}
HRESULT GetProcessUserSid(CSid* sid) {
CHECK(sid);
CAccessToken token;
if (!token.GetProcessToken(TOKEN_QUERY) || !token.GetUser(sid)) {
HRESULT hr = HRESULTFromLastError();
std::wstring thread_sid;
CHECK(FAILED(GetThreadUserSid(&thread_sid)));
return hr;
}
return S_OK;
}
bool IsLocalSystemUser() {
std::wstring user_sid;
HRESULT hr = GetProcessUser(nullptr, nullptr, &user_sid);
return SUCCEEDED(hr) && user_sid.compare(kSystemPrincipalSid) == 0;
}
HRESULT GetThreadUserSid(std::wstring* sid) {
CHECK(sid);
CAccessToken access_token;
CSid user_sid;
if (access_token.GetThreadToken(TOKEN_READ) &&
access_token.GetUser(&user_sid)) {
*sid = user_sid.Sid();
return S_OK;
}
return HRESULTFromLastError();
}
} // namespace updater
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