External dns for presets

v2rayN/ServiceLib/Common/SqliteHelper.cs

@@ -105,6 +105,11 @@ namespace ServiceLib.Common
             return _db.Execute(sql);
         }
 
+        public int DeleteAll<T>()
+        {
+            return _db.DeleteAll<T>();
+        }
+
         public async Task<int> ExecuteAsync(string sql)
         {
             return await _dbAsync.ExecuteAsync(sql);

v2rayN/ServiceLib/Global.cs

@@ -121,12 +121,17 @@
 
         public static readonly List<string> SingboxRulesetSources = new() {
             "",
-            @"https://raw.githubusercontent.com/runetfreedom/russia-v2ray-rules-dat/refs/heads/release/sing-box/rule-set-{0}/{1}.srs",
+            @"https://cdn.jsdelivr.net/gh/runetfreedom/russia-v2ray-rules-dat@release/sing-box/rule-set-{0}/{1}.srs",
         };
 
         public static readonly List<string> RoutingRulesSources = new() {
             "",
-            @"https://raw.githubusercontent.com/runetfreedom/russia-v2ray-custom-routing-list/refs/heads/main/template.json",
+            @"https://cdn.jsdelivr.net/gh/runetfreedom/russia-v2ray-custom-routing-list@main/template.json",
+        };
+
+        public static readonly List<string> DNSTemplateSources = new() {
+            "",
+            @"https://cdn.jsdelivr.net/gh/runetfreedom/russia-v2ray-custom-routing-list@main/",
         };
 
         public static readonly Dictionary<string, string> UserAgentTexts = new()

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -1761,6 +1761,11 @@ namespace ServiceLib.Handler
 
         public static int SaveDNSItems(Config config, DNSItem item)
         {
+            if (item == null)
+            {
+                return -1;
+            }
+
             if (Utils.IsNullOrEmpty(item.id))
             {
                 item.id = Utils.GetGuid(false);
@@ -1776,6 +1781,33 @@ namespace ServiceLib.Handler
             }
         }
 
+        public static DNSItem GetExternalDNSItem(ECoreType type, string url)
+        {
+            var currentItem = AppHandler.Instance.GetDNSItem(type);
+
+            var downloadHandle = new DownloadService();
+            var templateContent = Task.Run(() => downloadHandle.TryDownloadString(url, true, "")).Result;
+            if (String.IsNullOrEmpty(templateContent))
+                return currentItem;
+
+            var template = JsonUtils.Deserialize<DNSItem>(templateContent);
+            if (template == null)
+                return currentItem;
+
+            if (!String.IsNullOrEmpty(template.normalDNS))
+                template.normalDNS = Task.Run(() => downloadHandle.TryDownloadString(template.normalDNS, true, "")).Result;
+
+            if (!String.IsNullOrEmpty(template.tunDNS))
+                template.tunDNS = Task.Run(() => downloadHandle.TryDownloadString(template.tunDNS, true, "")).Result;
+
+            template.id = currentItem.id;
+            template.enabled = currentItem.enabled;
+            template.remarks = currentItem.remarks;
+            template.coreType = type;
+
+            return template;
+        }
+
         #endregion DNS
 
         #region Regional Presets
@@ -1789,6 +1821,9 @@ namespace ServiceLib.Handler
                     config.constItem.srsSourceUrl = "";
                     config.constItem.routeRulesTemplateSourceUrl = "";
 
+                    SQLiteHelper.Instance.DeleteAll<DNSItem>();
+                    InitBuiltinDNS(config);
+
                     return true;
 
                 case EPresetType.Russia:
@@ -1796,6 +1831,9 @@ namespace ServiceLib.Handler
                     config.constItem.srsSourceUrl = Global.SingboxRulesetSources[1];
                     config.constItem.routeRulesTemplateSourceUrl = Global.RoutingRulesSources[1];
 
+                    SaveDNSItems(config, GetExternalDNSItem(ECoreType.Xray, Global.DNSTemplateSources[1] + "v2ray.json"));
+                    SaveDNSItems(config, GetExternalDNSItem(ECoreType.sing_box, Global.DNSTemplateSources[1] + "sing_box.json"));
+
                     return true;
             }