mirror of
https://github.com/TigerVNC/tigervnc.git
synced 2024-08-21 17:54:34 +02:00
47ed8d321c
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/* Copyright (C) 2002-2004 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- Currentuser.cxx
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#include <windows.h>
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#include <lmcons.h>
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#include <rfb_win32/CurrentUser.h>
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#include <rfb_win32/Service.h>
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#include <rfb_win32/OSVersion.h>
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using namespace rfb;
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using namespace win32;
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CurrentUserToken::CurrentUserToken() : isValid_(false) {
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// - If the OS doesn't support security, ignore it
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if (!isServiceProcess()) {
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// - Running in User-Mode - just get our current token
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if (!OpenProcessToken(GetCurrentProcess(), GENERIC_ALL, &h)) {
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DWORD err = GetLastError();
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if (err != ERROR_CALL_NOT_IMPLEMENTED)
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throw rdr::SystemException("OpenProcessToken failed", GetLastError());
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}
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isValid_ = true;
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} else {
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// - Under XP/2003 and above, we can just ask the operating system
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typedef BOOL (WINAPI *WTSQueryUserToken_proto)(ULONG, PHANDLE);
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DynamicFn<WTSQueryUserToken_proto> _WTSQueryUserToken(_T("wtsapi32.dll"), "WTSQueryUserToken");
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if (_WTSQueryUserToken.isValid()) {
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(*_WTSQueryUserToken)(-1, &h);
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isValid_ = true;
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} else {
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// - Under NT/2K we have to resort to a nasty hack...
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HWND tray = FindWindow(_T("Shell_TrayWnd"), 0);
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if (!tray)
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return;
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DWORD processId = 0;
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GetWindowThreadProcessId(tray, &processId);
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if (!processId)
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return;
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Handle process = OpenProcess(MAXIMUM_ALLOWED, FALSE, processId);
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if (!process.h)
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return;
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OpenProcessToken(process, MAXIMUM_ALLOWED, &h);
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isValid_ = true;
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}
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}
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}
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ImpersonateCurrentUser::ImpersonateCurrentUser() {
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RegCloseKey(HKEY_CURRENT_USER);
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if (!isServiceProcess())
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return;
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if (!token.isValid())
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throw rdr::Exception("CurrentUserToken is not valid");
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if (!ImpersonateLoggedOnUser(token)) {
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DWORD err = GetLastError();
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if (err != ERROR_CALL_NOT_IMPLEMENTED)
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throw rdr::SystemException("Failed to impersonate user", GetLastError());
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}
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}
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ImpersonateCurrentUser::~ImpersonateCurrentUser() {
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if (!RevertToSelf()) {
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DWORD err = GetLastError();
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if (err != ERROR_CALL_NOT_IMPLEMENTED)
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exit(err);
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}
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}
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UserName::UserName() : TCharArray(UNLEN+1) {
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DWORD len = UNLEN+1;
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if (!GetUserName(buf, &len))
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throw rdr::SystemException("GetUserName failed", GetLastError());
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}
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