spark-store/src/main.cpp

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#include "mainwindow.h"
#include <QApplication>
#include <QProcess>
#include <QMessageBox>
#include <unistd.h> // for geteuid
#include <cstdlib> // for getenv
#include <QDebug> // For debugging output
bool isRoot() {
return geteuid() == 0;
}
bool elevateToRoot() {
QString program = QCoreApplication::applicationFilePath();
qDebug() << "Current application path:" << program;
QByteArray display = qgetenv("DISPLAY");
QByteArray xauthority = qgetenv("XAUTHORITY");
QStringList args;
args << "env"
<< "DISPLAY=" + display
<< "XAUTHORITY=" + xauthority
<< program;
QProcess process;
process.setProgram("pkexec");
process.setArguments(args);
qDebug() << "Attempting to elevate using pkexec with arguments:" << args;
process.start();
if (!process.waitForStarted(5000)) {
qDebug() << "Failed to start pkexec.";
return false;
}
// 阻塞等待提权进程退出(比如主程序窗口关闭)
if (!process.waitForFinished(-1)) { // 等待直到新进程退出
qDebug() << "pkexec process waitForFinished failed.";
return false;
}
int exitCode = process.exitCode();
QProcess::ExitStatus exitStatus = process.exitStatus();
qDebug() << "pkexec exit code:" << exitCode;
qDebug() << "pkexec exit status:" << exitStatus;
qDebug() << "pkexec stderr:" << process.readAllStandardError();
return (exitStatus == QProcess::NormalExit && exitCode == 0);
}
int main(int argc, char *argv[])
{
// 必须在 QGuiApplication 实例创建之前调用
// QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
QApplication a(argc, argv);
if (!isRoot()) {
qDebug() << "Not running as root. Attempting to elevate...";
if (!elevateToRoot()) {
qDebug() << "Elevation failed or pkexec command was not executed successfully.";
QMessageBox::critical(nullptr,
"权限不足",
"提权失败!\n\n您的系统可能不支持 `pkexec` 或 `polkit` 配置不正确,"
"或者您取消了授权。\n\n请尝试使用 `sudo` 命令运行此程序:"
"\n\n在终端中输入:\n`sudo " + QCoreApplication::applicationName() + "`");
return 0; // 提权失败,退出程序
} else {
// 如果 elevateToRoot 返回 true说明 pkexec 命令本身执行成功
// 但这并不意味着原始程序以 root 权限启动了
// 因为 elevateToRoot 启动的是一个新的进程,当前进程应该退出
// 否则会并行运行两个程序实例
qDebug() << "pkexec command executed successfully (new process likely started). Exiting current process.";
return 0; // 当前非root进程退出
}
} else {
qDebug() << "Running as root.";
}
MainWindow w;
w.show();
return a.exec();
}