fix(plugin): isolate login preferences by server origin and preserve official credentials

2026-10-05 00:25:57 +08:00
parent d04791dd31
commit eb445f88f4
11 changed files with 144 additions and 78 deletions
@@ -0,0 +1,45 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+using UnityEngine;
+
+namespace Bd2Login;
+
+// Both plugins use the same normalized origin and key format. Never use the
+// official login preference keys, even before the authentication policy loads.
+internal static class ServerLoginPreferences
+{
+    internal static string NormalizeOrigin(Uri uri)
+    {
+        if (uri == null || !uri.IsAbsoluteUri || string.IsNullOrEmpty(uri.Host) ||
+            (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps) || uri.UserInfo.Length != 0)
+            throw new InvalidOperationException("authentication server origin is unavailable or invalid");
+        var builder = new UriBuilder(uri.Scheme.ToLowerInvariant(), uri.IdnHost.ToLowerInvariant(),
+            uri.IsDefaultPort ? -1 : uri.Port);
+        return builder.Uri.GetLeftPart(UriPartial.Authority).TrimEnd('/');
+    }
+
+    internal static string Key(string prefix, string origin)
+    {
+        string normalized = NormalizeOrigin(new Uri(origin, UriKind.Absolute));
+        using SHA256 sha = SHA256.Create();
+        byte[] digest = sha.ComputeHash(Encoding.UTF8.GetBytes(normalized));
+        var hex = new StringBuilder(digest.Length * 2);
+        foreach (byte value in digest) hex.Append(value.ToString("x2"));
+        return prefix + hex;
+    }
+
+    internal static bool IsAutoLogin(string origin) => Read("IsAutoLogin", origin);
+    internal static bool UseAutoLoginPC(string origin) => Read("StandaloneAutoLogin", origin);
+    internal static void SetAutoLogin(string origin, bool value) => Write("IsAutoLogin", origin, value);
+    internal static void SetUseAutoLoginPC(string origin, bool value) => Write("StandaloneAutoLogin", origin, value);
+
+    private static bool Read(string setting, string origin) =>
+        PlayerPrefs.GetInt(Key("BD2LoginV1_" + setting + "_", origin), 0) != 0;
+
+    private static void Write(string setting, string origin, bool value)
+    {
+        PlayerPrefs.SetInt(Key("BD2LoginV1_" + setting + "_", origin), value ? 1 : 0);
+        PlayerPrefs.Save();
+    }
+}