From 8bc4c993f9a1ee1c3227de626daeaf539303e1c9 Mon Sep 17 00:00:00 2001
From: jduncanator <jduncanator@hotmail.com>
Date: Tue, 24 Mar 2020 23:33:45 +1100
Subject: [PATCH] prepo: Resolve JSON parsing issues in prepo report handling

It seems MsgPack.Cli incorrectly converts some unicode control characters directly to JSON literal Unicode strings (eg. '\1'). As these are invalid, pretty printing the JSON report fails.

This removes pretty printing, pending a proper implementation, and tidies up MsgPack deserialization.
---
 .../HOS/Services/Prepo/IPrepoService.cs       | 31 ++++++-------------
 1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/Ryujinx.HLE/HOS/Services/Prepo/IPrepoService.cs b/Ryujinx.HLE/HOS/Services/Prepo/IPrepoService.cs
index 67344061a8..c28574479f 100644
--- a/Ryujinx.HLE/HOS/Services/Prepo/IPrepoService.cs
+++ b/Ryujinx.HLE/HOS/Services/Prepo/IPrepoService.cs
@@ -1,3 +1,4 @@
+using MsgPack;
 using MsgPack.Serialization;
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
@@ -83,35 +84,21 @@ namespace Ryujinx.HLE.HOS.Services.Prepo
 
         private string ReadReportBuffer(byte[] buffer, string room, UserId userId)
         {
-            StringBuilder sb = new StringBuilder();
+            StringBuilder     builder = new StringBuilder();
+            MessagePackObject deserializedReport = MessagePackSerializer.UnpackMessagePackObject(buffer);
 
-            sb.AppendLine();
-            sb.AppendLine("PlayReport log:");
+            builder.AppendLine();
+            builder.AppendLine("PlayReport log:");
 
             if (!userId.IsNull)
             {
-                sb.AppendLine($" UserId: {userId.ToString()}");
+                builder.AppendLine($" UserId: {userId.ToString()}");
             }
 
-            sb.AppendLine($" Room: {room}");
+            builder.AppendLine($" Room: {room}");
+            builder.AppendLine($" Report: {deserializedReport}");
 
-            var    deserializedReport = Deserialize<dynamic>(buffer);
-            string jsonReport         = Encoding.ASCII.GetString(JsonSerializer.PrettyPrintByteArray(Encoding.UTF8.GetBytes(deserializedReport.ToString())));
-
-            sb.AppendLine($" Report:");
-            sb.AppendLine(jsonReport);
-
-            return sb.ToString();
-        }
-
-        private static T Deserialize<T>(byte[] bytes)
-        {
-            MessagePackSerializer serializer = MessagePackSerializer.Get<T>();
-
-            using (MemoryStream byteStream = new MemoryStream(bytes))
-            {
-                return (T)serializer.Unpack(byteStream);
-            }
+            return builder.ToString();
         }
     }
 }
\ No newline at end of file