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https://github.com/kasmtech/KasmVNC.git
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114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/* Copyright (C) 2002-2005 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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// -=- LaunchProcess.cxx
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#include <rfb_win32/LaunchProcess.h>
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#include <rfb_win32/ModuleFileName.h>
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#include <rfb_win32/Win32Util.h>
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#include <rdr/Exception.h>
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#include <stdio.h>
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using namespace rfb;
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using namespace win32;
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LaunchProcess::LaunchProcess(const TCHAR* exeName_, const TCHAR* params_)
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: exeName(tstrDup(exeName_)), params(tstrDup(params_)) {
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memset(&procInfo, 0, sizeof(procInfo));
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}
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LaunchProcess::~LaunchProcess() {
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await();
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}
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void LaunchProcess::start(HANDLE userToken, bool createConsole) {
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if (procInfo.hProcess && (WaitForSingleObject(procInfo.hProcess, 0) != WAIT_OBJECT_0))
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return;
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await();
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returnCode = STILL_ACTIVE;
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DWORD size;
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char desktopName[256];
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char buf[256];
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HDESK desktop = GetThreadDesktop(GetCurrentThreadId());
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if (!GetUserObjectInformation(desktop, UOI_NAME, buf, 256, &size))
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throw rdr::SystemException("unable to launch process", GetLastError());
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snprintf(desktopName, 256, "WinSta0\\%s", buf);
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// - Create storage for the process startup information
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STARTUPINFO sinfo;
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memset(&sinfo, 0, sizeof(sinfo));
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sinfo.cb = sizeof(sinfo);
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sinfo.lpDesktop = desktopName;
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// - Concoct a suitable command-line
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TCharArray exePath;
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if (!tstrContains(exeName.buf, _T('\\'))) {
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ModuleFileName filename;
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TCharArray path; splitPath(filename.buf, &path.buf, 0);
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exePath.buf = new TCHAR[_tcslen(path.buf) + _tcslen(exeName.buf) + 2];
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_stprintf(exePath.buf, _T("%s\\%s"), path.buf, exeName.buf);
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} else {
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exePath.buf = tstrDup(exeName.buf);
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}
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// - Start the process
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// Note: We specify the exe's precise path in the ApplicationName parameter,
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// AND include the name as the first part of the CommandLine parameter,
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// because CreateProcess doesn't make ApplicationName argv[0] in C programs.
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TCharArray cmdLine(_tcslen(exeName.buf) + 3 + _tcslen(params.buf) + 1);
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_stprintf(cmdLine.buf, _T("\"%s\" %s"), exeName.buf, params.buf);
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DWORD flags = createConsole ? CREATE_NEW_CONSOLE : CREATE_NO_WINDOW;
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BOOL success;
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if (userToken != INVALID_HANDLE_VALUE)
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success = CreateProcessAsUser(userToken, exePath.buf, cmdLine.buf, 0, 0, FALSE, flags, 0, 0, &sinfo, &procInfo);
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else
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success = CreateProcess(exePath.buf, cmdLine.buf, 0, 0, FALSE, flags, 0, 0, &sinfo, &procInfo);
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if (!success)
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throw rdr::SystemException("unable to launch process", GetLastError());
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// Wait for it to finish initialising
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WaitForInputIdle(procInfo.hProcess, 15000);
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}
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void LaunchProcess::detach()
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{
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if (!procInfo.hProcess)
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return;
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CloseHandle(procInfo.hProcess);
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CloseHandle(procInfo.hThread);
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memset(&procInfo, 0, sizeof(procInfo));
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}
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bool LaunchProcess::await(DWORD timeoutMs) {
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if (!procInfo.hProcess)
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return true;
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DWORD result = WaitForSingleObject(procInfo.hProcess, timeoutMs);
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if (result == WAIT_OBJECT_0) {
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GetExitCodeProcess(procInfo.hProcess, &returnCode);
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detach();
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return true;
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} else if (result == WAIT_FAILED) {
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throw rdr::SystemException("await() failed", GetLastError());
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}
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return false;
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}
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