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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "d3dservice.h"
#include <QtCore/QFile>
#include <wincred.h>
#include <ntsecapi.h>
#define SECURITY_WIN32
#include <security.h>
// Utility methods for getting user credentials and elevating the process
bool D3DService::getCredentials(LPWSTR username, DWORD *usernameSize,
LPWSTR password, DWORD *passwordSize)
{
WCHAR user[MAX_PATH];
ULONG userSize = MAX_PATH;
GetUserNameEx(NameSamCompatible, user, &userSize);
// Get LSA handle and package ID
HANDLE lsaHandle;
DWORD result = LsaConnectUntrusted(&lsaHandle);
if (result != ERROR_SUCCESS) {
qCWarning(lcD3DService) << "Unable to get LSA handle:"
<< qt_error_string(LsaNtStatusToWinError(result));
return false;
}
LSA_STRING packageName = { sizeof(NEGOSSP_NAME_A) - 1, sizeof(NEGOSSP_NAME_A), NEGOSSP_NAME_A };
ULONG packageId;
result = LsaLookupAuthenticationPackage(lsaHandle, &packageName, &packageId);
if (result != ERROR_SUCCESS) {
qCWarning(lcD3DService) << "Unable to get authentication package:"
<< qt_error_string(LsaNtStatusToWinError(result));
LsaClose(lsaHandle);
return false;
}
LsaClose(lsaHandle);
CREDUI_INFO uiInfo = { sizeof(CREDUI_INFO), GetForegroundWindow(),
L"Enter the credentials for your local user. Or, simply click OK "
L"and update the credentials later in the Services console.",
L"Qt D3D Compilation Service", NULL };
QByteArray credentialsStorage(256, Qt::Uninitialized);
BLOB credentials = { credentialsStorage.size(), (BYTE *)credentialsStorage.data() };
if (!CredPackAuthenticationBuffer(CRED_PACK_GENERIC_CREDENTIALS, user, L"",
credentials.pBlobData, &credentials.cbSize)) {
qCWarning(lcD3DService) << "Unable to pack authentication buffer:"
<< qt_error_string(GetLastError());
return false;
}
BLOB authBuffer;
result = CredUIPromptForWindowsCredentials(&uiInfo, 0, &packageId,
credentials.pBlobData, credentials.cbSize,
(LPVOID *)&authBuffer.pBlobData, &authBuffer.cbSize,
NULL, CREDUIWIN_GENERIC);
if (result == ERROR_SUCCESS) {
WCHAR domain[MAX_PATH] = { 0 };
DWORD domainSize = MAX_PATH;
const BOOL unpackOk = CredUnPackAuthenticationBuffer(
0, authBuffer.pBlobData, authBuffer.cbSize,
username, usernameSize, domain, &domainSize,
password, passwordSize);
if (unpackOk) {
return true;
} else {
qCWarning(lcD3DService) << "Unable to unpack credentials:"
<< qt_error_string(GetLastError());
}
}
qCWarning(lcD3DService) << qt_error_string(result);
SecureZeroMemory(password, *passwordSize);
SecureZeroMemory(username, *usernameSize);
*usernameSize = *passwordSize = 0;
return false;
}
bool D3DService::executeElevated(LPCWSTR exe, LPCWSTR param, DWORD *exitCode)
{
// Create a temporary file for redirected output
wchar_t tempPath[MAX_PATH];
if (!GetTempPath(MAX_PATH, tempPath)) {
qCWarning(lcD3DService) << "Unable to get the temporary file path for redirected output:"
<< qt_error_string(GetLastError());
return false;
}
wchar_t tempFileName[MAX_PATH];
if (!GetTempFileName(tempPath, L"temp", 0, tempFileName)) {
qCWarning(lcD3DService) << "Unable to get a temporary file name for redirected output:"
<< qt_error_string(GetLastError());
return false;
}
qCWarning(lcD3DService) << "Requesting administrative permissions...";
const QString args = QString::fromWCharArray(param) + QStringLiteral(" -output \"")
+ QString::fromWCharArray(tempFileName) + QLatin1Char('"');
SHELLEXECUTEINFO executeInfo = {
sizeof(SHELLEXECUTEINFO), SEE_MASK_NOCLOSEPROCESS, GetConsoleWindow(),
L"runas", exe, reinterpret_cast<LPCWSTR>(args.utf16()), 0, SW_HIDE
};
if (!ShellExecuteEx(&executeInfo)) {
qCWarning(lcD3DService) << "Unable to elevate the process:"
<< qt_error_string(GetLastError());
return false;
}
qCWarning(lcD3DService) << "Elevation successful.";
WaitForSingleObject(executeInfo.hProcess, INFINITE);
// Fetch program output
QFile output(QString::fromWCharArray(tempFileName));
if (output.open(QFile::ReadOnly)) {
while (!output.atEnd())
qCWarning(lcD3DService) << output.readLine().trimmed().constData();
} else {
qCWarning(lcD3DService) << "Unable to open output file:"
<< output.errorString();
}
if (!output.remove()) {
qCWarning(lcD3DService) << "Unable to remove the output file:"
<< output.errorString();
}
if (!GetExitCodeProcess(executeInfo.hProcess, exitCode)) {
qCWarning(lcD3DService) << "Exit status unknown:"
<< qt_error_string(GetLastError());
CloseHandle(executeInfo.hProcess);
return false;
}
CloseHandle(executeInfo.hProcess);
return true;
}
bool D3DService::addLogonRight(LPCWSTR username)
{
HANDLE lsaHandle;
LSA_OBJECT_ATTRIBUTES attributes = { 0 };
DWORD result = LsaOpenPolicy(NULL, &attributes, POLICY_LOOKUP_NAMES, &lsaHandle);
if (result != ERROR_SUCCESS) {
qCWarning(lcD3DService) << "Unable to get LSA handle:"
<< qt_error_string(LsaNtStatusToWinError(result));
return false;
}
char sid[96]; // Maximum binary size of SID should be 68; use 96 to be safe
DWORD sidSize = sizeof(sid);
SID_NAME_USE use;
wchar_t domain[MAX_PATH];
DWORD domainSize = MAX_PATH;
if (!LookupAccountName(NULL, username, sid, &sidSize, domain, &domainSize, &use)) {
qCWarning(lcD3DService) << "Unable to lookup account SID:"
<< qt_error_string(GetLastError());
LsaClose(lsaHandle);
return false;
}
ushort len = wcslen(SE_SERVICE_LOGON_NAME) * sizeof(WCHAR);
LSA_UNICODE_STRING rights = { len, len + sizeof(WCHAR), SE_SERVICE_LOGON_NAME };
result = LsaAddAccountRights(lsaHandle, sid, &rights, 1);
if (result != ERROR_SUCCESS) {
qCWarning(lcD3DService) << "Unable to grant the user service logon rights:"
<< qt_error_string(LsaNtStatusToWinError(result));
LsaClose(lsaHandle);
return false;
}
LsaClose(lsaHandle);
return true;
}
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