From 6c7e806eacecd71ad073d160ac95dbcadaad8199 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Wed, 29 Jul 2020 12:39:18 +0900
Subject: [PATCH] Include executable hash when submitting multiplayer scores

---
 osu.Game/OsuGameBase.cs         | 14 ++++++++++++++
 osu.Game/Scoring/ScoreInfo.cs   |  3 +++
 osu.Game/Screens/Play/Player.cs |  1 +
 3 files changed, 18 insertions(+)

diff --git a/osu.Game/OsuGameBase.cs b/osu.Game/OsuGameBase.cs
index fe5c0704b7..964a7fdd35 100644
--- a/osu.Game/OsuGameBase.cs
+++ b/osu.Game/OsuGameBase.cs
@@ -11,6 +11,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
 using osu.Framework.Development;
+using osu.Framework.Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.IO.Stores;
@@ -97,6 +98,11 @@ namespace osu.Game
 
         public virtual Version AssemblyVersion => Assembly.GetEntryAssembly()?.GetName().Version ?? new Version();
 
+        /// <summary>
+        /// MD5 representation of the game executable.
+        /// </summary>
+        public string VersionHash { get; private set; }
+
         public bool IsDeployedBuild => AssemblyVersion.Major > 0;
 
         public virtual string Version
@@ -128,6 +134,14 @@ namespace osu.Game
         [BackgroundDependencyLoader]
         private void load()
         {
+            var assembly = Assembly.GetEntryAssembly();
+
+            if (assembly != null)
+            {
+                using (var str = File.OpenRead(assembly.Location))
+                    VersionHash = str.ComputeMD5Hash();
+            }
+
             Resources.AddStore(new DllResourceStore(OsuResources.ResourceAssembly));
 
             dependencies.Cache(contextFactory = new DatabaseContextFactory(Storage));
diff --git a/osu.Game/Scoring/ScoreInfo.cs b/osu.Game/Scoring/ScoreInfo.cs
index 84c0d5b54e..2cc065b5ad 100644
--- a/osu.Game/Scoring/ScoreInfo.cs
+++ b/osu.Game/Scoring/ScoreInfo.cs
@@ -51,6 +51,9 @@ namespace osu.Game.Scoring
         [NotMapped]
         public bool Passed { get; set; } = true;
 
+        [JsonProperty("version_hash")]
+        public string VersionHash { get; set; }
+
         [JsonIgnore]
         public virtual RulesetInfo Ruleset { get; set; }
 
diff --git a/osu.Game/Screens/Play/Player.cs b/osu.Game/Screens/Play/Player.cs
index 541275cf55..5df6cf42cb 100644
--- a/osu.Game/Screens/Play/Player.cs
+++ b/osu.Game/Screens/Play/Player.cs
@@ -465,6 +465,7 @@ namespace osu.Game.Screens.Play
             {
                 Beatmap = Beatmap.Value.BeatmapInfo,
                 Ruleset = rulesetInfo,
+                VersionHash = Game.VersionHash,
                 Mods = Mods.Value.ToArray(),
             };