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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
// -=- LaunchProcess.cxx
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <rfb_win32/LaunchProcess.h>
#include <rfb_win32/ModuleFileName.h>
#include <rfb_win32/Win32Util.h>
#include <rdr/Exception.h>
#include <stdio.h>
using namespace rfb;
using namespace win32;
LaunchProcess::LaunchProcess(const TCHAR* exeName_, const TCHAR* params_)
: exeName(tstrDup(exeName_)), params(tstrDup(params_)) {
memset(&procInfo, 0, sizeof(procInfo));
}
LaunchProcess::~LaunchProcess() {
await();
}
void LaunchProcess::start(HANDLE userToken, bool createConsole) {
if (procInfo.hProcess && (WaitForSingleObject(procInfo.hProcess, 0) != WAIT_OBJECT_0))
return;
await();
returnCode = STILL_ACTIVE;
DWORD size;
char desktopName[256];
char buf[256];
HDESK desktop = GetThreadDesktop(GetCurrentThreadId());
if (!GetUserObjectInformation(desktop, UOI_NAME, buf, 256, &size))
throw rdr::SystemException("unable to launch process", GetLastError());
snprintf(desktopName, 256, "WinSta0\\%s", buf);
// - Create storage for the process startup information
STARTUPINFO sinfo;
memset(&sinfo, 0, sizeof(sinfo));
sinfo.cb = sizeof(sinfo);
sinfo.lpDesktop = desktopName;
// - Concoct a suitable command-line
TCharArray exePath;
if (!tstrContains(exeName.buf, _T('\\'))) {
ModuleFileName filename;
TCharArray path; splitPath(filename.buf, &path.buf, 0);
exePath.buf = new TCHAR[_tcslen(path.buf) + _tcslen(exeName.buf) + 2];
_stprintf(exePath.buf, _T("%s\\%s"), path.buf, exeName.buf);
} else {
exePath.buf = tstrDup(exeName.buf);
}
// - Start the process
// Note: We specify the exe's precise path in the ApplicationName parameter,
// AND include the name as the first part of the CommandLine parameter,
// because CreateProcess doesn't make ApplicationName argv[0] in C programs.
TCharArray cmdLine(_tcslen(exeName.buf) + 3 + _tcslen(params.buf) + 1);
_stprintf(cmdLine.buf, _T("\"%s\" %s"), exeName.buf, params.buf);
DWORD flags = createConsole ? CREATE_NEW_CONSOLE : CREATE_NO_WINDOW;
BOOL success;
if (userToken != INVALID_HANDLE_VALUE)
success = CreateProcessAsUser(userToken, exePath.buf, cmdLine.buf, 0, 0, FALSE, flags, 0, 0, &sinfo, &procInfo);
else
success = CreateProcess(exePath.buf, cmdLine.buf, 0, 0, FALSE, flags, 0, 0, &sinfo, &procInfo);
if (!success)
throw rdr::SystemException("unable to launch process", GetLastError());
// Wait for it to finish initialising
WaitForInputIdle(procInfo.hProcess, 15000);
}
void LaunchProcess::detach()
{
if (!procInfo.hProcess)
return;
CloseHandle(procInfo.hProcess);
CloseHandle(procInfo.hThread);
memset(&procInfo, 0, sizeof(procInfo));
}
bool LaunchProcess::await(DWORD timeoutMs) {
if (!procInfo.hProcess)
return true;
DWORD result = WaitForSingleObject(procInfo.hProcess, timeoutMs);
if (result == WAIT_OBJECT_0) {
GetExitCodeProcess(procInfo.hProcess, &returnCode);
detach();
return true;
} else if (result == WAIT_FAILED) {
throw rdr::SystemException("await() failed", GetLastError());
}
return false;
}
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