add random listen port feature

include/global/DataStore.hpp

@@ -115,6 +115,7 @@ namespace Configs {
         // Socks & HTTP Inbound
         QString inbound_address = "127.0.0.1";
         int inbound_socks_port = 2080; // Mixed, actually
+        bool random_inbound_port = false;
         QString custom_inbound = "{\"inbounds\": []}";
 
         // Routing

include/ui/setting/dialog_basic_settings.ui

@@ -89,6 +89,16 @@
               </property>
              </widget>
             </item>
+            <item>
+             <widget class="QCheckBox" name="random_listen_port">
+              <property name="toolTip">
+               <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Selects a random available port on every run&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+              </property>
+              <property name="text">
+               <string>Random port</string>
+              </property>
+             </widget>
+            </item>
            </layout>
           </widget>
          </item>

src/global/Configs.cpp

@@ -245,6 +245,7 @@ namespace Configs {
         _add(new configItem("current_group", &current_group, itemType::integer));
         _add(new configItem("inbound_address", &inbound_address, itemType::string));
         _add(new configItem("inbound_socks_port", &inbound_socks_port, itemType::integer));
+        _add(new configItem("random_inbound_port", &random_inbound_port, itemType::boolean));
         _add(new configItem("log_level", &log_level, itemType::string));
         _add(new configItem("mux_protocol", &mux_protocol, itemType::string));
         _add(new configItem("mux_concurrency", &mux_concurrency, itemType::integer));

src/ui/mainwindow.cpp

@@ -52,6 +52,7 @@
 #include <QToolTip>
 #include <random>
 #include <3rdparty/QHotkey/qhotkey.h>
+#include <3rdparty/qv2ray/v2/proxy/QvProxyConfigurator.hpp>
 #include <include/api/gRPC.h>
 #include <include/global/HTTPRequestHelper.hpp>
 
@@ -125,6 +126,12 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
         runOnUiThread([=] { show_log_impl(log); });
     };
 
+    // Listen port if random
+    if (Configs::dataStore->random_inbound_port)
+    {
+        Configs::dataStore->inbound_socks_port = MkPort();
+    }
+
     // Prepare core
     Configs::dataStore->core_port = MkPort();
     if (Configs::dataStore->core_port <= 0) Configs::dataStore->core_port = 19810;
@@ -688,6 +695,15 @@ void MainWindow::dialog_message_impl(const QString &sender, const QString &info)
         if (info.contains("UpdateDisableTray")) {
             tray->setVisible(!Configs::dataStore->disable_tray);
         }
+        if (info.contains("NeedChoosePort"))
+        {
+            Configs::dataStore->inbound_socks_port = MkPort();
+            if (Configs::dataStore->spmode_system_proxy)
+            {
+                set_spmode_system_proxy(false);
+                set_spmode_system_proxy(true);
+            }
+        }
         auto suggestRestartProxy = Configs::dataStore->Save();
         if (info.contains("RouteChanged")) {
             Configs::dataStore->routing->Save();
@@ -700,7 +716,7 @@ void MainWindow::dialog_message_impl(const QString &sender, const QString &info)
         if (info.contains("VPNChanged") && Configs::dataStore->spmode_vpn) {
             MessageBoxWarning(tr("Tun Settings changed"), tr("Restart Tun to take effect."));
         }
-        if (suggestRestartProxy && Configs::dataStore->started_id >= 0 &&
+        if ((info.contains("NeedChoosePort") || suggestRestartProxy) && Configs::dataStore->started_id >= 0 &&
             QMessageBox::question(GetMessageBoxParent(), tr("Confirmation"), tr("Settings changed, restart proxy?")) == QMessageBox::StandardButton::Yes) {
             profile_start(Configs::dataStore->started_id);
         }

src/ui/setting/dialog_basic_settings.cpp

@@ -31,6 +31,7 @@ DialogBasicSettings::DialogBasicSettings(QWidget *parent)
     D_LOAD_COMBO_STRING(log_level)
     CACHE.custom_inbound = Configs::dataStore->custom_inbound;
     D_LOAD_INT(inbound_socks_port)
+    ui->random_listen_port->setChecked(Configs::dataStore->random_inbound_port);
     D_LOAD_INT(test_concurrent)
     D_LOAD_STRING(test_latency_url)
     D_LOAD_BOOL(disable_tray)
@@ -43,6 +44,16 @@ DialogBasicSettings::DialogBasicSettings(QWidget *parent)
     connect(ui->disable_tray, &QCheckBox::stateChanged, this, [=](const bool &) {
         CACHE.updateDisableTray = true;
     });
+    connect(ui->random_listen_port, &QCheckBox::checkStateChanged, this, [=](const bool &state)
+    {
+        if (state)
+        {
+            ui->inbound_socks_port->setDisabled(true);
+        } else
+        {
+            ui->inbound_socks_port->setDisabled(false);
+        }
+    });
 
 #ifndef Q_OS_WIN
     ui->proxy_scheme_box->hide();
@@ -172,11 +183,17 @@ DialogBasicSettings::~DialogBasicSettings() {
 
 void DialogBasicSettings::accept() {
     // Common
+    bool needChoosePort = false;
 
     D_SAVE_STRING(inbound_address)
     D_SAVE_COMBO_STRING(log_level)
     Configs::dataStore->custom_inbound = CACHE.custom_inbound;
     D_SAVE_INT(inbound_socks_port)
+    if (!Configs::dataStore->random_inbound_port && ui->random_listen_port->isChecked())
+    {
+        needChoosePort = true;
+    }
+    Configs::dataStore->random_inbound_port = ui->random_listen_port->isChecked();
     D_SAVE_INT(test_concurrent)
     D_SAVE_STRING(test_latency_url)
     D_SAVE_BOOL(disable_tray)
@@ -239,6 +256,7 @@ void DialogBasicSettings::accept() {
     QStringList str{"UpdateDataStore"};
     if (CACHE.needRestart) str << "NeedRestart";
     if (CACHE.updateDisableTray) str << "UpdateDisableTray";
+    if (needChoosePort) str << "NeedChoosePort";
     MW_dialog_message(Dialog_DialogBasicSettings, str.join(","));
     QDialog::accept();
 }