1
0
mirror of https://github.com/qTox/qTox.git synced 2024-03-22 14:00:36 +08:00
qTox/updater/settings.cpp

156 lines
5.3 KiB
C++
Raw Normal View History

/*
Copyright © 2019 by The qTox Project Contributors
This file is part of qTox, a Qt-based graphical interface for Tox.
qTox is libre 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.
qTox 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 qTox. If not, see <http://www.gnu.org/licenses/>.
*/
#include "settings.h"
#include <QDebug>
#include <QDir>
#include <QFile>
#include <QSettings>
#include <QStandardPaths>
#ifdef Q_OS_WIN
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0600 // Vista for SHGetKnownFolderPath
#include <exdisp.h>
#include <shldisp.h>
#include <shlobj.h>
#include <windows.h>
#endif
Settings::Settings()
{
portable = false;
QFile portableSettings(SETTINGS_FILE);
if (portableSettings.exists()) {
QSettings ps(SETTINGS_FILE, QSettings::IniFormat);
ps.beginGroup("General");
portable = ps.value("makeToxPortable", false).toBool();
}
qDebug() << "Portable: " << portable;
#ifdef Q_OS_WIN
// Get a primary unelevated token of the actual user
hPrimaryToken = nullptr;
HANDLE hShellProcess = nullptr, hShellProcessToken = nullptr;
const DWORD dwTokenRights = TOKEN_QUERY | TOKEN_IMPERSONATE | TOKEN_ASSIGN_PRIMARY
| TOKEN_DUPLICATE | TOKEN_ADJUST_DEFAULT | TOKEN_ADJUST_SESSIONID;
DWORD dwPID = 0;
HWND hwnd = nullptr;
DWORD dwLastErr = 0;
// Enable SeIncreaseQuotaPrivilege
HANDLE hProcessToken = nullptr;
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hProcessToken))
goto unelevateFail;
TOKEN_PRIVILEGES tkp;
tkp.PrivilegeCount = 1;
LookupPrivilegeValueW(nullptr, SE_INCREASE_QUOTA_NAME, &tkp.Privileges[0].Luid);
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hProcessToken, FALSE, &tkp, 0, nullptr, nullptr);
dwLastErr = GetLastError();
CloseHandle(hProcessToken);
if (ERROR_SUCCESS != dwLastErr)
goto unelevateFail;
// Get a primary copy of the desktop shell's token,
// we're assuming the shell is running as the actual user
hwnd = GetShellWindow();
if (!hwnd)
goto unelevateFail;
GetWindowThreadProcessId(hwnd, &dwPID);
if (!dwPID)
goto unelevateFail;
hShellProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, dwPID);
if (!hShellProcess)
goto unelevateFail;
if (!OpenProcessToken(hShellProcess, TOKEN_DUPLICATE, &hShellProcessToken))
goto unelevateFail;
// Duplicate the shell's process token to get a primary token.
// Based on experimentation, this is the minimal set of rights required for
// CreateProcessWithTokenW (contrary to current documentation).
if (!DuplicateTokenEx(hShellProcessToken, dwTokenRights, nullptr, SecurityImpersonation,
TokenPrimary, &hPrimaryToken))
goto unelevateFail;
qDebug() << "Unelevated primary access token acquired";
goto unelevateCleanup;
unelevateFail:
qWarning() << "Unelevate failed, couldn't get access token";
unelevateCleanup:
CloseHandle(hShellProcessToken);
CloseHandle(hShellProcess);
#endif
}
Settings::~Settings()
{
#ifdef Q_OS_WIN
CloseHandle(hPrimaryToken);
#endif
}
QString Settings::getSettingsDirPath() const
{
if (portable)
return QString(".") + QDir::separator();
// workaround for https://bugreports.qt-project.org/browse/QTBUG-38845
#ifdef Q_OS_WIN
wchar_t* path;
bool isOld = false; // If true, we can't unelevate and just return the path for our current home
auto shell32H = LoadLibrary(TEXT("shell32.dll"));
if (!(isOld = (shell32H == nullptr))) {
auto SHGetKnownFolderPathH =
(decltype(&SHGetKnownFolderPath))GetProcAddress(shell32H, "SHGetKnownFolderPath");
if (!(isOld = (SHGetKnownFolderPathH == nullptr)))
SHGetKnownFolderPathH(FOLDERID_RoamingAppData, 0, hPrimaryToken, &path);
}
if (isOld) {
return QDir::cleanPath(QStandardPaths::writableLocation(QStandardPaths::HomeLocation)
+ QDir::separator() + "AppData" + QDir::separator() + "Roaming"
+ QDir::separator() + "tox" + QDir::separator());
} else {
QString pathStr = QString::fromStdWString(path);
pathStr.replace("\\", "/");
return pathStr + "/tox";
}
#elif defined(Q_OS_OSX)
return QDir::cleanPath(QStandardPaths::writableLocation(QStandardPaths::HomeLocation)
+ QDir::separator() + "Library" + QDir::separator()
+ "Application Support" + QDir::separator() + "Tox")
+ QDir::separator();
#else
return QDir::cleanPath(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation)
+ QDir::separator() + "tox")
+ QDir::separator();
#endif
}
#ifdef Q_OS_WIN
HANDLE Settings::getPrimaryToken() const
{
return hPrimaryToken;
}
#endif