From 6f5ae1664b01e76670c3238c698851a289e86e63 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B0=8F=E7=99=BD=E7=8C=BF?= <1083092844@qq.com>
Date: Mon, 19 Jun 2023 21:42:50 +0800
Subject: [PATCH] =?UTF-8?q?=E7=BB=95=E8=BF=87web=E7=AB=AF=E5=AE=9A?=
 =?UTF-8?q?=E6=97=B6=E6=93=8D=E4=BD=9C=E6=A3=80=E6=B5=8B?=
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Content-Transfer-Encoding: 8bit

---
 BarrageGrab/Proxy/TitaniumProxy.cs | 41 ++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

diff --git a/BarrageGrab/Proxy/TitaniumProxy.cs b/BarrageGrab/Proxy/TitaniumProxy.cs
index 0190f62..689bb65 100644
--- a/BarrageGrab/Proxy/TitaniumProxy.cs
+++ b/BarrageGrab/Proxy/TitaniumProxy.cs
@@ -8,6 +8,7 @@ using System.Runtime.InteropServices;
 using System.Security.Cryptography;
 using System.Security.Cryptography.X509Certificates;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using BarrageGrab.Proxy.ProxyEventArgs;
 using Microsoft.Win32;
@@ -47,7 +48,7 @@ namespace BarrageGrab.Proxy
             proxyServer.AfterResponse += ProxyServer_AfterResponse;
 
             explicitEndPoint = new ExplicitProxyEndPoint(IPAddress.Any, ProxyPort, true);
-            explicitEndPoint.BeforeTunnelConnectRequest += ExplicitEndPoint_BeforeTunnelConnectRequest;
+            explicitEndPoint.BeforeTunnelConnectRequest += ExplicitEndPoint_BeforeTunnelConnectRequest;            
             proxyServer.AddEndPoint(explicitEndPoint);
         }
 
@@ -73,22 +74,58 @@ namespace BarrageGrab.Proxy
             if (e.SslPolicyErrors == SslPolicyErrors.None)
             {
                 e.IsValid = true;
-            }
+            }            
             return Task.CompletedTask;
         }
 
         private async Task ProxyServer_BeforeResponse(object sender, SessionEventArgs e)
         {
+            string uri = e.HttpClient.Request.RequestUri.ToString();
             string hostname = e.HttpClient.Request.RequestUri.Host;
             if (e.HttpClient.ConnectRequest?.TunnelType == TunnelType.Websocket)
             {
                 e.DataReceived += WebSocket_DataReceived;
             }
+
+            //判断响应内容是否为js application/javascript
+            if (e.HttpClient.Response.ContentType != null &&
+                e.HttpClient.Response.ContentType.Trim().ToLower().Contains("application/javascript") &&
+                hostname == "lf-cdn-tos.bytescm.com"
+                )
+            {
+                var js = await e.GetResponseBodyAsString();
+                
+                //修改js,绕过页面无操作检测
+                var reg1 = new Regex(@"start\(\)\{Dt\.enable\(\),this\.tracker&&this\.tracker\.enable\(\)\}");
+                var match = reg1.Match(js);
+                if (match.Success)
+                {
+                    js = reg1.Replace(js, "start(){return;Dt.enable(),this.tracker&&this.tracker.enable()}");
+                    e.SetResponseBodyString(js);
+                    return;
+                }
+
+                var reg2 = new Regex(@"if\(!N.DJ\(\)&&(?<variable>\S).current\)\{");
+                match = reg2.Match(js);
+                if (match.Success)
+                {
+                    js = reg2.Replace(js, "if(!N.DJ()&&${variable}.current){return;");
+                    e.SetResponseBodyString(js);
+                    return;
+                }
+            }
         }
 
         private async Task ExplicitEndPoint_BeforeTunnelConnectRequest(object sender, TunnelConnectSessionEventArgs e)
         {
+            string url = e.HttpClient.Request.RequestUri.ToString();
             string hostname = e.HttpClient.Request.RequestUri.Host;
+            if (hostname == "lf-cdn-tos.bytescm.com")
+            {
+                e.DecryptSsl = true;
+                return;
+            }
+            
             if (!CheckHost(hostname))
             {
                 e.DecryptSsl = false;