Add support of hashes

Classes/LayerConfig.as

@@ -1,6 +1,7 @@
 class LayerConfig {
     string Name;
     string Path;
+    string Hash;
 
     CGameUILayer::EUILayerType LayerType = CGameUILayer::EUILayerType::Normal;
     string AttachId = '';
@@ -9,6 +10,7 @@ class LayerConfig {
 
     LayerConfig(const string &in _ParentPath, const Json::Value &in _Data) {
         Path = Path::Join(_ParentPath, _Data['Path']);
+        Hash = _Data['Hash'];
         
         const string Manialink = GetManialink();
         Name = PacksManager::GetLayerName(Manialink);
@@ -33,6 +35,22 @@ class LayerConfig {
 
         IO::File File(Path, IO::FileMode::Read);
         const string Manialink = File.ReadToEnd();
+
+        const string FileHash = Crypto::Sha256(Manialink);
+
+        if (Hash != FileHash) {
+            print('Cannot load layer "'+ Path +'": Invalid hash');
+            trace('info.json Layer hash: '+ Hash);
+            trace('file hash: '+ FileHash);
+            if (S_DisplayHashWarning) {
+                RenderManager::NotifyWarning('Cannot load layer "'+ Path +'": Invalid hash');
+            }
+
+            if (!Meta::IsDeveloperMode()) {
+                throw('Cannot load layer "'+ Path +'": Invalid hash');   
+            }
+        }
+
         return Manialink;
     }
 

Hashes.as

@@ -0,0 +1,2 @@
+const array<string> C_InterfacesPacksHashes = {
+};

PackManager.as

@@ -41,6 +41,21 @@ namespace PacksManager {
 
             const string FileContent = File.ReadToEnd();
 
+            const string InfoFileHash = Crypto::Sha256(FileContent);
+
+            if (C_InterfacesPacksHashes.Find(InfoFileHash) < 0) {
+                print('Invalid Pack Config "'+ Id +'": Invalid hash');
+                trace('info.json hash: '+ InfoFileHash);
+                if (S_DisplayHashWarning) {
+                    RenderManager::NotifyWarning('Invalid Pack Config "'+ Id +'": Invalid hash');
+                }
+
+                if (!Meta::IsDeveloperMode()) {
+                    trace('Invalid Pack Config "'+ Id +'": Invalid hash');
+                    continue;
+                }
+            }
+
             try {
                 const PackConfig Config(Path, FileContent);
                 G_Configs[Id] = Config;

Settings.as

@@ -1,3 +1,6 @@
 
+[Setting name="Display hash mismatch warning"]
+bool S_DisplayHashWarning = true;
+
 [Setting hidden]
 string S_EnabledConfigs = '';