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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 <boost/scoped_array.hpp>
#include <gameinfo.h>
#include <inject.h>
#include <Shellapi.h>
#include <appconfig.h>
#include <windows_error.h>
#include <QApplication>
#include <QMessageBox>
using namespace MOBase;
using namespace MOShared;
static const int BUFSIZE = 4096;
bool spawn(LPCWSTR binary, LPCWSTR arguments, LPCWSTR currentDirectory, bool suspended,
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);
int length = wcslen(binary) + wcslen(arguments) + 4;
wchar_t *commandLine = NULL;
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(commandLine, length, 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 - 1);
newPath.get()[offset - 1] = L'\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 = ::CreateProcess(NULL,
commandLine,
NULL, NULL, // no special process or thread attributes
inheritHandles, // inherit handles if we plan to use stdout or stderr reroute
CREATE_BREAKAWAY_FROM_JOB | (suspended ? CREATE_SUSPENDED : 0), // create suspended so I have time to inject the DLL
NULL, // 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 QString& profileName,
int logLevel,
const QDir ¤tDirectory,
bool hooked,
HANDLE stdOut,
HANDLE stdErr)
{
HANDLE jobObject = ::CreateJobObject(NULL, NULL);
if (jobObject == NULL) {
qWarning("failed to create job object: %lu", ::GetLastError());
}
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,
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(NULL, 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(NULL, 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;
}
}
if (hooked) {
try {
QFileInfo dllInfo(QApplication::applicationDirPath() + "/" + ToQString(AppConfig::hookDLLName()));
if (!dllInfo.exists()) {
reportError(QObject::tr("\"%1\" doesn't exist").arg(dllInfo.fileName()));
return INVALID_HANDLE_VALUE;
}
injectDLL(processHandle, threadHandle,
QDir::toNativeSeparators(dllInfo.canonicalFilePath()).toLocal8Bit().constData(),
ToWString(profileName).c_str(), logLevel);
} catch (const windows_error& e) {
reportError(QObject::tr("failed to inject dll into \"%1\": %2").arg(binary.fileName()).arg(e.what()));
::TerminateProcess(processHandle, 1);
return INVALID_HANDLE_VALUE;
}
#ifdef _DEBUG
reportError("ready?");
#endif // DEBUG
}
if (::AssignProcessToJobObject(jobObject, processHandle) == 0) {
qWarning("failed to assign to job object: %lu", ::GetLastError());
::CloseHandle(jobObject);
jobObject = processHandle;
} else {
::CloseHandle(processHandle);
}
if (::ResumeThread(threadHandle) == (DWORD)-1) {
reportError(QObject::tr("failed to run \"%1\"").arg(binary.fileName()));
return INVALID_HANDLE_VALUE;
}
::CloseHandle(threadHandle);
return jobObject;
}
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