feat(server): check for version in update requests

client/PlayerMap.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <Version>1.0.3</Version>
+        <Version>1.0.4</Version>
         <TargetFramework>net7.0-windows</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>

client/Plugin.cs

@@ -103,7 +103,7 @@ public class Plugin : IDalamudPlugin {
             // shuffle so first player isn't always local player
             players.Shuffle();
 
-            var update = new Update(territory, localPlayer.CurrentWorld.Id, players);
+            var update = new Update(2, territory, localPlayer.CurrentWorld.Id, players);
             var msgpack = MessagePackSerializer.Serialize(update, MessagePackSerializerOptions.Standard);
 
             using var mem = new MemoryStream();
@@ -140,9 +140,9 @@ public class Plugin : IDalamudPlugin {
 // with http headers, call it 6500 bytes/req
 [Serializable]
 [MessagePackObject]
-public struct Update(uint territory, uint world, List<PlayerInfo> players) {
+public struct Update(byte version, uint territory, uint world, List<PlayerInfo> players) {
     [Key(0)]
-    public readonly byte Version = 2;
+    public readonly byte Version = version;
 
     [Key(1)]
     public readonly uint Territory = territory;

server/src/main.rs

@@ -181,6 +181,10 @@ async fn upload(
     state: State<Arc<AppState>>,
     data: MsgPack<Update>,
 ) -> Result<(), AppError> {
+    if data.version != 2 {
+        return Err(anyhow::anyhow!("invalid update request version").into());
+    }
+
     let mut t = state.pool.begin().await?;
 
     for player in &data.players {
@@ -253,6 +257,7 @@ async fn upload(
 
 #[derive(Deserialize)]
 struct Update {
+    version: u8,
     territory: u32,
     world: u32,
     players: Vec<PlayerInfo>,