add dns intercept and route for tproxy

src/base/models/QvSettingsObject.hpp

@@ -84,18 +84,19 @@ namespace Qv2ray::base::config
         bool tproxy_followRedirect;
         /*redirect or tproxy way, and tproxy need cap_net_admin*/
         QString tproxy_mode;
+        bool dnsIntercept;
 
         Qv2rayInboundsConfig()
             : listenip("127.0.0.1"), setSystemProxy(true), useSocks(true), socks_port(1088), socks_useAuth(false), socksUDP(true),
               socksLocalIP("127.0.0.1"), socksAccount(), useHTTP(true), http_port(8888), http_useAuth(false), httpAccount(), useTPROXY(false),
               tproxy_ip("127.0.0.1"), tproxy_port(12345), tproxy_use_tcp(true), tproxy_use_udp(false), tproxy_followRedirect(true),
-              tproxy_mode("tproxy")
+              tproxy_mode("tproxy"),dnsIntercept(true)
         {
         }
 
         XTOSTRUCT(O(setSystemProxy, listenip, useSocks, useHTTP, socks_port, socks_useAuth, socksAccount, socksUDP, socksLocalIP, http_port,
                     http_useAuth, httpAccount, useTPROXY, tproxy_ip, tproxy_port, tproxy_use_tcp, tproxy_use_udp, tproxy_followRedirect,
-                    tproxy_mode))
+                    tproxy_mode,dnsIntercept))
     };
 
     struct Qv2rayOutboundsConfig

src/core/connection/Generation.cpp

@@ -515,6 +515,9 @@ namespace Qv2ray::core::connection
                 {
                     OutboundMarkSettingFilter(GlobalConfig.outboundConfig.mark, root);
                 }
+                if (GlobalConfig.inboundConfig.useTPROXY && GlobalConfig.inboundConfig.dnsIntercept){
+                    DNSInterceptFilter(root);
+                }
             }
 
             // Let's process some api features.
@@ -599,5 +602,22 @@ namespace Qv2ray::core::connection
             root["outbounds"] = outbounds;
         }
 
+        void DNSInterceptFilter(CONFIGROOT &root){
+            // dns outBound
+            QJsonObject dnsOutboundObj{{"protocol","dns"},{"tag","dns-out"}};
+            OUTBOUNDS outbounds(root["outbounds"].toArray());
+            outbounds.append(dnsOutboundObj);
+            root["outbounds"] = outbounds;
+
+            //dns route
+            QJsonObject dnsRoutingRuleObj{{"outboundTag", "dns-out"},{"port","53"},{"type", "field"}};
+            ROUTING routing(root["routing"].toObject());
+            QJsonArray _rules(routing["rules"].toArray());
+            _rules.insert(0,dnsRoutingRuleObj);
+            routing["rules"]=_rules;
+            root["routing"]=routing;
+        }
+
+
     } // namespace Generation
 } // namespace Qv2ray::core::connection

src/core/connection/Generation.hpp

@@ -40,6 +40,8 @@ namespace Qv2ray::core::connection
         // mark all outbound
         void OutboundMarkSettingFilter(const int mark, CONFIGROOT &root);
 
+        void DNSInterceptFilter(CONFIGROOT &root);
+
     } // namespace Generation
 } // namespace Qv2ray::core::connection
 

src/ui/w_PreferencesWindow.cpp

@@ -128,6 +128,7 @@ PreferencesWindow::PreferencesWindow(QWidget *parent) : QDialog(parent), Current
     tproxyFollowRedirect->setChecked(CurrentConfig.inboundConfig.tproxy_followRedirect);
     tproxyMode->setCurrentText(CurrentConfig.inboundConfig.tproxy_mode);
     outboundMark->setValue(CurrentConfig.outboundConfig.mark);
+    dnsIntercept->setChecked(CurrentConfig.inboundConfig.dnsIntercept);
     //
     //
     vCorePathTxt->setText(CurrentConfig.kernelConfig.KernelPath());
@@ -1262,3 +1263,11 @@ void PreferencesWindow::on_outboundMark_valueChanged(int arg1)
     NEEDRESTART
     CurrentConfig.outboundConfig.mark=arg1;
 }
+
+
+void PreferencesWindow::on_dnsIntercept_toggled(bool checked)
+{
+    NEEDRESTART
+    CurrentConfig.inboundConfig.dnsIntercept=checked;
+
+}

src/ui/w_PreferencesWindow.hpp

@@ -196,6 +196,8 @@ class PreferencesWindow
 
     void on_outboundMark_valueChanged(int arg1);
 
+    void on_dnsIntercept_toggled(bool checked);
+
 private:
     //
     RouteSettingsMatrixWidget *routeSettingsWidget;

src/ui/w_PreferencesWindow.ui

@@ -705,8 +705,8 @@ Custom DNS Settings</string>
            <rect>
             <x>0</x>
             <y>0</y>
-            <width>710</width>
+            <width>703</width>
-            <height>520</height>
+            <height>524</height>
            </rect>
           </property>
           <layout class="QVBoxLayout" name="verticalLayout_2">
@@ -1013,6 +1013,13 @@ Custom DNS Settings</string>
                     </property>
                    </widget>
                   </item>
+                  <item>
+                   <widget class="QCheckBox" name="dnsIntercept">
+                    <property name="text">
+                     <string>DNS Intercept</string>
+                    </property>
+                   </widget>
+                  </item>
                   <item>
                    <spacer name="horizontalSpacer_2">
                     <property name="orientation">