From 294f2a311ea2cfb590529522c0afae8e5a4f44fd Mon Sep 17 00:00:00 2001
From: Jesse Plamondon-Willard <Pathoschild@users.noreply.github.com>
Date: Thu, 19 Aug 2021 00:40:12 -0400
Subject: fix error resolving native DLLs like libSkiaSharp

---
 src/SMAPI.Installer/InteractiveInstaller.cs  |  8 ++++++++
 src/SMAPI.Toolkit/Utilities/FileUtilities.cs | 13 +++++++++++++
 src/SMAPI/Program.cs                         | 16 ++++++++++++++++
 3 files changed, 37 insertions(+)

(limited to 'src')

diff --git a/src/SMAPI.Installer/InteractiveInstaller.cs b/src/SMAPI.Installer/InteractiveInstaller.cs
index 714a959b..d8c27a2d 100644
--- a/src/SMAPI.Installer/InteractiveInstaller.cs
+++ b/src/SMAPI.Installer/InteractiveInstaller.cs
@@ -410,6 +410,14 @@ namespace StardewModdingApi.Installer
                         }
                     }
 
+                    // copy the game's deps.json file
+                    // (This is needed to resolve native DLLs like libSkiaSharp.)
+                    File.Copy(
+                        sourceFileName: Path.Combine(paths.GamePath, "Stardew Valley.deps.json"),
+                        destFileName: Path.Combine(paths.GamePath, "StardewModdingAPI.deps.json"),
+                        overwrite: true
+                    );
+
                     // create mods directory (if needed)
                     if (!paths.ModsDir.Exists)
                     {
diff --git a/src/SMAPI.Toolkit/Utilities/FileUtilities.cs b/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
index 7856fdb1..a6bf5929 100644
--- a/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
+++ b/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
@@ -1,4 +1,6 @@
+using System;
 using System.IO;
+using System.Security.Cryptography;
 using System.Threading;
 
 namespace StardewModdingAPI.Toolkit.Utilities
@@ -42,5 +44,16 @@ namespace StardewModdingAPI.Toolkit.Utilities
             if (entry.Exists)
                 throw new IOException($"Timed out trying to delete {entry.FullName}");
         }
+
+        /// <summary>Get the MD5 hash for a file.</summary>
+        /// <param name="absolutePath">The absolute file path.</param>
+        public static string GetFileHash(string absolutePath)
+        {
+            using FileStream stream = File.OpenRead(absolutePath);
+            using MD5 md5 = MD5.Create();
+
+            byte[] hash = md5.ComputeHash(stream);
+            return BitConverter.ToString(hash).Replace("-", "").ToLowerInvariant();
+        }
     }
 }
diff --git a/src/SMAPI/Program.cs b/src/SMAPI/Program.cs
index 0417697b..67ff8322 100644
--- a/src/SMAPI/Program.cs
+++ b/src/SMAPI/Program.cs
@@ -5,6 +5,7 @@ using System.Reflection;
 using System.Threading;
 using StardewModdingAPI.Framework;
 using StardewModdingAPI.Toolkit.Serialization.Models;
+using StardewModdingAPI.Toolkit.Utilities;
 
 namespace StardewModdingAPI
 {
@@ -33,6 +34,7 @@ namespace StardewModdingAPI
                 Program.AssertGamePresent();
                 Program.AssertGameVersion();
                 Program.AssertSmapiVersions();
+                Program.AssertDepsJson();
                 Program.Start(args);
             }
             catch (BadImageFormatException ex) when (ex.FileName == EarlyConstants.GameAssemblyName)
@@ -130,6 +132,20 @@ namespace StardewModdingAPI
             }
         }
 
+        /// <summary>Assert that SMAPI's <c>StardewModdingAPI.deps.json</c> matches <c>Stardew Valley.deps.json</c>, fixing it if necessary.</summary>
+        /// <remarks>This is needed to resolve native DLLs like libSkiaSharp.</remarks>
+        private static void AssertDepsJson()
+        {
+            string sourcePath = Path.Combine(Constants.ExecutionPath, "Stardew Valley.deps.json");
+            string targetPath = Path.Combine(Constants.ExecutionPath, "StardewModdingAPI.deps.json");
+
+            if (!File.Exists(targetPath) || FileUtilities.GetFileHash(sourcePath) != FileUtilities.GetFileHash(targetPath))
+            {
+                File.Copy(sourcePath, targetPath, overwrite: true);
+                Program.PrintErrorAndExit($"The '{Path.GetFileName(targetPath)}' file didn't match the game's version. SMAPI fixed it automatically, but you must restart SMAPI for the change to take effect.");
+            }
+        }
+
         /// <summary>Initialize SMAPI and launch the game.</summary>
         /// <param name="args">The command-line arguments.</param>
         /// <remarks>This method is separate from <see cref="Main"/> because that can't contain any references to assemblies loaded by <see cref="CurrentDomain_AssemblyResolve"/> (e.g. via <see cref="Constants"/>), or Mono will incorrectly show an assembly resolution error before assembly resolution is set up.</remarks>
-- 
cgit