mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-27 06:38:44 -05:00
117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
#include "NonInheritingProcess.hpp"
|
|
|
|
#ifdef Q_OS_WIN
|
|
#ifndef WIN32_LEAN_AND_MEAN
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#endif
|
|
#ifndef NOMINMAX
|
|
#define NOMINMAX
|
|
#endif
|
|
#ifndef _UNICODE
|
|
#define _UNICODE
|
|
#endif
|
|
#ifdef _WIN32_WINNT
|
|
#undef _WIN32_WINNT
|
|
#endif
|
|
#define _WIN32_WINNT 0x0601
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#include <memory>
|
|
#include <functional>
|
|
|
|
#include "pimpl_impl.hpp"
|
|
|
|
namespace
|
|
{
|
|
#ifdef Q_OS_WIN
|
|
struct start_info_deleter
|
|
{
|
|
void operator () (STARTUPINFOEXW * si)
|
|
{
|
|
if (si->lpAttributeList)
|
|
{
|
|
::DeleteProcThreadAttributeList (si->lpAttributeList);
|
|
}
|
|
delete si;
|
|
}
|
|
};
|
|
#endif
|
|
}
|
|
|
|
class NonInheritingProcess::impl
|
|
{
|
|
public:
|
|
#ifdef Q_OS_WIN
|
|
void extend_CreateProcessArguments (QProcess::CreateProcessArguments * args)
|
|
{
|
|
//
|
|
// Here we modify the CreateProcessArguments structure to use a
|
|
// STARTUPINFOEX extended argument to CreateProcess. In that we
|
|
// set up a list of handles for the new process to inherit. By
|
|
// doing this we stop all inherited handles from being
|
|
// inherited. Unfortunately UpdateProcThreadAttribute does not let
|
|
// us set up an empty handle list, so we populate the list with
|
|
// the three standard stream handles that QProcess::start has set
|
|
// up as Pipes to do IPC. Even though these Pipe handles are
|
|
// created with inheritance disabled, UpdateProcThreadAtribute and
|
|
// CreateProcess don't seem to mind, which suits us fine.
|
|
//
|
|
// Note: that we cannot just clear the inheritHandles flag as that
|
|
// stops the standard stream handles being inherited which breaks
|
|
// our IPC using std(in|out|err). Only be using a
|
|
// PROC_THREAD_ATTRIBUTE_HANDLE_LIST attribute in a STARTUPINFOEX
|
|
// structure can we avoid the all or nothing behaviour of
|
|
// CreateProcess /w respect to handle inheritance.
|
|
//
|
|
BOOL fSuccess;
|
|
SIZE_T size {0};
|
|
LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList = nullptr;
|
|
::InitializeProcThreadAttributeList (nullptr, 1, 0, &size);
|
|
lpAttributeList = reinterpret_cast<LPPROC_THREAD_ATTRIBUTE_LIST> (::HeapAlloc (::GetProcessHeap (), 0, size));
|
|
fSuccess = !!lpAttributeList;
|
|
if (fSuccess)
|
|
{
|
|
fSuccess = ::InitializeProcThreadAttributeList (lpAttributeList, 1, 0, &size);
|
|
}
|
|
if (fSuccess)
|
|
{
|
|
// empty list of handles
|
|
fSuccess = ::UpdateProcThreadAttribute (lpAttributeList, 0,
|
|
PROC_THREAD_ATTRIBUTE_HANDLE_LIST,
|
|
&args->startupInfo->hStdInput, 3 * sizeof (HANDLE),
|
|
nullptr, 0);
|
|
}
|
|
if (fSuccess)
|
|
{
|
|
start_info_.reset (new STARTUPINFOEXW);
|
|
start_info_->StartupInfo = *args->startupInfo;
|
|
start_info_->StartupInfo.cb = sizeof (STARTUPINFOEXW);
|
|
start_info_->lpAttributeList = lpAttributeList;
|
|
args->startupInfo = reinterpret_cast<Q_STARTUPINFO*> (start_info_.get ());
|
|
args->flags |= EXTENDED_STARTUPINFO_PRESENT;
|
|
}
|
|
}
|
|
|
|
using start_info_type = std::unique_ptr<STARTUPINFOEXW, start_info_deleter>;
|
|
start_info_type start_info_;
|
|
#endif
|
|
};
|
|
|
|
NonInheritingProcess::NonInheritingProcess (QObject * parent)
|
|
: QProcess {parent}
|
|
{
|
|
#ifdef Q_OS_WIN
|
|
using namespace std::placeholders;
|
|
|
|
// enable cleanup after process starts or fails to start
|
|
connect (this, &QProcess::started, [this] {m_->start_info_.reset ();});
|
|
connect (this, &QProcess::errorOccurred, [this] (QProcess::ProcessError) {m_->start_info_.reset ();});
|
|
setCreateProcessArgumentsModifier (std::bind (&NonInheritingProcess::impl::extend_CreateProcessArguments, &*m_, _1));
|
|
#endif
|
|
}
|
|
|
|
NonInheritingProcess::~NonInheritingProcess ()
|
|
{
|
|
}
|