fix: 加入bvuid3和bvuid4可能解决无法解析的问题

Author: yaobiao131

DownKyi.Core/BiliApi/Users/UserInfo.cs

@@ -49,7 +49,7 @@ public static class UserInfo
         var query = WbiSign.ParametersToQuery(WbiSign.EncodeWbi(parameters));
         var url = $"https://api.bilibili.com/x/space/wbi/acc/info?{query}";
         const string referer = "https://www.bilibili.com";
-        var response = WebClient.RequestWeb(url, referer, needRandomBvuid3: true);
+        var response = WebClient.RequestWeb(url, referer);
 
         try
         {

DownKyi.Core/BiliApi/VideoStream/VideoStream.cs

@@ -232,7 +232,7 @@ public static PlayUrl GetCheesePlayUrl(long avid, string bvid, long cid, long ep
     /// <returns></returns>
     private static PlayUrl GetPlayUrl(string url)
     {
-        const string referer = "https://m.bilibili.com";
+        const string referer = "https://www.bilibili.com";
         var response = WebClient.RequestWeb(url, referer);
 
         try
@@ -271,7 +271,7 @@ private static PlayUrl GetPlayUrl(string url)
     private static PlayUrl? GetPlayUrlWebPage(string url)
     {
         const string referer = "https://www.bilibili.com";
-        var response = WebClient.RequestWeb(url, referer, needRandomBvuid3: true);
+        var response = WebClient.RequestWeb(url, referer);
 
         try
         {

DownKyi.Core/BiliApi/WebClient.cs

@@ -4,23 +4,49 @@
 using DownKyi.Core.BiliApi.Login;
 using DownKyi.Core.Logging;
 using DownKyi.Core.Settings;
+using Newtonsoft.Json;
 
 namespace DownKyi.Core.BiliApi;
 
 internal static class WebClient
 {
-    private static string GetRandomBuvid3()
+    internal class SpiOrigin
     {
-        // 随机生成10位字符串
-        const string str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
-        var random = new Random();
-        var result = new StringBuilder();
-        for (var i = 0; i < 10; i++)
-        {
-            result.Append(str[random.Next(str.Length)]);
-        }
+        [JsonProperty("data")] public Spi? Data { get; set; }
+        public int Code { get; set; }
+        public string? Message { get; set; }
+    }
+
+    internal class Spi
+    {
+        [JsonProperty("b_3")] public string? Bvuid3 { get; set; }
+        [JsonProperty("b_4")] public string? Bvuid4 { get; set; }
+    }
 
-        return result.ToString();
+    private static string? _bvuid3 = string.Empty;
+    private static string? _bvuid4 = string.Empty;
+
+    // private static string GetRandomBuvid3()
+    // {
+    //     // 随机生成10位字符串
+    //     const string str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    //     var random = new Random();
+    //     var result = new StringBuilder();
+    //     for (var i = 0; i < 10; i++)
+    //     {
+    //         result.Append(str[random.Next(str.Length)]);
+    //     }
+    //
+    //     return result.ToString();
+    // }
+
+    private static void GetBuvid()
+    {
+        const string url = "https://api.bilibili.com/x/frontend/finger/spi";
+        var response = RequestWeb(url);
+        var spi = JsonConvert.DeserializeObject<SpiOrigin>(response);
+        _bvuid3 = spi?.Data?.Bvuid3;
+        _bvuid4 = spi?.Data?.Bvuid4;
     }
 
     /// <summary>
@@ -32,8 +58,7 @@ private static string GetRandomBuvid3()
     /// <param name="parameters"></param>
     /// <param name="retry"></param>
     /// <returns></returns>
-    public static string RequestWeb(string url, string? referer = null, string method = "GET",
-        Dictionary<string, string>? parameters = null, int retry = 3, bool needRandomBvuid3 = false)
+    public static string RequestWeb(string url, string? referer = null, string method = "GET", Dictionary<string, string>? parameters = null, int retry = 3)
     {
         // 重试次数
         if (retry <= 0)
@@ -62,6 +87,11 @@ public static string RequestWeb(string url, string? referer = null, string metho
 
         try
         {
+            if (string.IsNullOrEmpty(_bvuid3) && url != "https://api.bilibili.com/x/frontend/finger/spi")
+            {
+                GetBuvid();
+            }
+
             var request = (HttpWebRequest)WebRequest.Create(url);
             request.Method = method;
             request.Timeout = 30 * 1000;
@@ -81,20 +111,19 @@ public static string RequestWeb(string url, string? referer = null, string metho
             // 构造cookie
             if (!url.Contains("getLogin"))
             {
-                request.Headers["origin"] = "https://m.bilibili.com";
+                request.Headers["origin"] = "https://www.bilibili.com";
 
                 var cookies = LoginHelper.GetLoginInfoCookies();
-                if (cookies != null)
+                request.CookieContainer = cookies ?? new CookieContainer();
+
+                if (!string.IsNullOrEmpty(_bvuid3))
                 {
-                    request.CookieContainer = cookies;
+                    request.CookieContainer.Add(new Cookie("buvid3", _bvuid3, "/", ".bilibili.com"));
                 }
-                else
+
+                if (!string.IsNullOrEmpty(_bvuid4))
                 {
-                    request.CookieContainer = new CookieContainer();
-                    if (needRandomBvuid3)
-                    {
-                        request.CookieContainer.Add(new Cookie("buvid3", GetRandomBuvid3(), "/", ".bilibili.com"));
-                    }
+                    request.CookieContainer.Add(new Cookie("buvid4", _bvuid4, "/", ".bilibili.com"));
                 }
             }