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/*
Copyright (C) 2012 Sebastian Herbord. All rights reserved.
This file is part of Mod Organizer.
Mod Organizer 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 3 of the License, or
(at your option) any later version.
Mod Organizer 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 Mod Organizer. If not, see <http://www.gnu.org/licenses/>.
*/
#include "spawn.h"
#include "report.h"
#include "utility.h"
#include <Shellapi.h>
#include <appconfig.h>
#include <report.h>
#include <usvfs.h>
#include <windows_error.h>
#include <QApplication>
#include <QMessageBox>
#include <Shellapi.h>
#include <boost/scoped_array.hpp>
using namespace MOBase;
using namespace MOShared;
static const int BUFSIZE = 4096;
static bool spawn(LPCWSTR binary, LPCWSTR arguments, LPCWSTR currentDirectory, bool suspended, bool hooked,
HANDLE stdOut, HANDLE stdErr, HANDLE& processHandle, HANDLE& threadHandle) {
BOOL inheritHandles = FALSE;
STARTUPINFO si;
::ZeroMemory(&si, sizeof(si));
if (stdOut != INVALID_HANDLE_VALUE) {
si.hStdOutput = stdOut;
inheritHandles = TRUE;
si.dwFlags |= STARTF_USESTDHANDLES;
}
if (stdErr != INVALID_HANDLE_VALUE) {
si.hStdError = stdErr;
inheritHandles = TRUE;
si.dwFlags |= STARTF_USESTDHANDLES;
}
si.cb = sizeof(si);
size_t length = wcslen(binary) + wcslen(arguments) + 4;
wchar_t* commandLine = nullptr;
if (arguments[0] != L'\0') {
commandLine = new wchar_t[length];
_snwprintf(commandLine, length, L"\"%ls\" %ls", binary, arguments);
} else {
commandLine = new wchar_t[length];
_snwprintf_s(commandLine, length, _TRUNCATE, L"\"%ls\"", binary);
}
QString moPath = QCoreApplication::applicationDirPath();
boost::scoped_array<TCHAR> oldPath(new TCHAR[BUFSIZE]);
DWORD offset = ::GetEnvironmentVariable(TEXT("PATH"), oldPath.get(), BUFSIZE);
if (offset > BUFSIZE) {
oldPath.reset(new TCHAR[offset]);
::GetEnvironmentVariable(TEXT("PATH"), oldPath.get(), offset);
}
{
boost::scoped_array<TCHAR> newPath(new TCHAR[offset + moPath.length() + 2]);
_tcsncpy(newPath.get(), oldPath.get(), offset);
newPath.get()[offset] = '\0';
_tcsncat(newPath.get(), TEXT(";"), 1);
_tcsncat(newPath.get(), ToWString(QDir::toNativeSeparators(moPath)).c_str(), moPath.length());
::SetEnvironmentVariable(TEXT("PATH"), newPath.get());
}
PROCESS_INFORMATION pi;
BOOL success = FALSE;
if (hooked) {
success =
::CreateProcessHooked(nullptr, commandLine, nullptr, nullptr, // no special process or thread attributes
inheritHandles, // inherit handles if we plan to use stdout or stderr reroute
CREATE_BREAKAWAY_FROM_JOB,
nullptr, // same environment as parent
currentDirectory, // current directory
&si, &pi // startup and process information
);
} else {
success = ::CreateProcess(nullptr, commandLine, nullptr, nullptr, // no special process or thread attributes
inheritHandles, // inherit handles if we plan to use stdout or stderr reroute
CREATE_BREAKAWAY_FROM_JOB,
nullptr, // same environment as parent
currentDirectory, // current directory
&si, &pi // startup and process information
);
}
::SetEnvironmentVariable(TEXT("PATH"), oldPath.get());
delete[] commandLine;
if (!success) {
throw windows_error("failed to start process");
}
processHandle = pi.hProcess;
threadHandle = pi.hThread;
return true;
}
HANDLE startBinary(const QFileInfo& binary, const QString& arguments, const QDir& currentDirectory, bool hooked,
HANDLE stdOut, HANDLE stdErr) {
HANDLE processHandle, threadHandle;
std::wstring binaryName = ToWString(QDir::toNativeSeparators(binary.absoluteFilePath()));
std::wstring currentDirectoryName = ToWString(QDir::toNativeSeparators(currentDirectory.absolutePath()));
try {
if (!spawn(binaryName.c_str(), ToWString(arguments).c_str(), currentDirectoryName.c_str(), true, hooked, stdOut,
stdErr, processHandle, threadHandle)) {
reportError(QObject::tr("failed to spawn \"%1\"").arg(binary.fileName()));
return INVALID_HANDLE_VALUE;
}
} catch (const windows_error& e) {
if (e.getErrorCode() == ERROR_ELEVATION_REQUIRED) {
// TODO: check if this is really correct. Are all settings updated that the secondary instance may use?
if (QMessageBox::question(
nullptr, QObject::tr("Elevation required"),
QObject::tr(
"This process requires elevation to run.\n"
"This is a potential security risk so I highly advice you to investigate if\n"
"\"%1\"\n"
"can be installed to work without elevation.\n\n"
"Start elevated anyway? "
"(you will be asked if you want to allow ModOrganizer.exe to make changes to the system)")
.arg(QDir::toNativeSeparators(binary.absoluteFilePath())),
QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {
::ShellExecuteW(nullptr, L"runas", ToWString(QCoreApplication::applicationFilePath()).c_str(),
(std::wstring(L"\"") + binaryName + L"\" " + ToWString(arguments)).c_str(),
currentDirectoryName.c_str(), SW_SHOWNORMAL);
return INVALID_HANDLE_VALUE;
} else {
return INVALID_HANDLE_VALUE;
}
} else {
reportError(QObject::tr("failed to spawn \"%1\": %2").arg(binary.fileName()).arg(e.what()));
return INVALID_HANDLE_VALUE;
}
}
::CloseHandle(threadHandle);
return processHandle;
}
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