Initial commit: Brass & Sigil monorepo

Self-hosted Minecraft modpack distribution + administration system. - launcher/ Avalonia 12 desktop client; single-file win-x64 publish. Microsoft auth via XboxAuthNet, manifest+SHA-1 mod sync, portable install path, sidecar settings. - server/ brass-sigil-server daemon (.NET 8, linux-x64). Wraps the MC subprocess, embedded Kestrel admin panel with cookie auth + rate limiting, RCON bridge, scheduled backups, BlueMap CLI integration with player markers + skin proxy, friend-side whitelist request flow, world wipe with seed selection (keep current / random / custom). - pack/ pack.lock.json (Modrinth + manual CurseForge entries), data-only tweak source under tweaks/, build outputs in overrides/ (gitignored). - scripts/ Build-Pack / Build-Tweaks / Update-Pack / Check-Updates plus Deploy-Brass.ps1 unified one-shot deploy with version-bump pre-flight and daemon-state detection.
2026-05-05 00:19:05 +01:00
commit a1331212cb
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+using System;
+using System.IO;
+using System.Linq;
+using fNbt;
+
+namespace ModpackLauncher.Services;
+
+/// <summary>
+/// Pre-populates Minecraft's multiplayer server list (`servers.dat`) so the
+/// modpack's server is one click away on first launch.
+///
+/// servers.dat is uncompressed NBT (unlike level.dat which is gzipped). Schema:
+///   compound {
+///     servers : list[compound] {
+///       name             : string
+///       ip               : string
+///       acceptTextures   : byte (optional, 1 = enabled)
+///       hidden           : byte (optional, 0 = visible)
+///       icon             : string (optional, base64 PNG)
+///     }
+///   }
+/// </summary>
+public sealed class ServerListService
+{
+    /// <summary>
+    /// Add or update an entry. Match-by-IP: if an entry with the same IP exists,
+    /// update its name; otherwise prepend a new entry so the friend's first
+    /// glance at multiplayer shows our server at the top.
+    /// </summary>
+    public void EnsureServer(string gameDir, string name, string ip)
+    {
+        if (string.IsNullOrWhiteSpace(name) || string.IsNullOrWhiteSpace(ip)) return;
+        Directory.CreateDirectory(gameDir);
+        var path = Path.Combine(gameDir, "servers.dat");
+
+        NbtCompound root;
+        NbtList servers;
+
+        if (File.Exists(path))
+        {
+            try
+            {
+                var nbt = new NbtFile();
+                nbt.LoadFromFile(path, NbtCompression.None, _ => true);
+                root = nbt.RootTag;
+                if (root.TryGet("servers", out NbtList? existingList) && existingList is not null)
+                {
+                    servers = existingList;
+                }
+                else
+                {
+                    servers = new NbtList("servers", NbtTagType.Compound);
+                    root.Add(servers);
+                }
+            }
+            catch
+            {
+                // Existing file unreadable -- start fresh rather than crashing the install.
+                root = new NbtCompound("");
+                servers = new NbtList("servers", NbtTagType.Compound);
+                root.Add(servers);
+            }
+        }
+        else
+        {
+            root = new NbtCompound("");
+            servers = new NbtList("servers", NbtTagType.Compound);
+            root.Add(servers);
+        }
+
+        // Match-by-IP. If found, update the display name; otherwise prepend.
+        for (int i = 0; i < servers.Count; i++)
+        {
+            if (servers[i] is not NbtCompound entry) continue;
+            if (entry.TryGet("ip", out NbtString? ipTag) && ipTag?.Value == ip)
+            {
+                entry["name"] = new NbtString("name", name);
+                Save(root, path);
+                return;
+            }
+        }
+
+        var newEntry = new NbtCompound
+        {
+            new NbtString("name", name),
+            new NbtString("ip", ip),
+            // acceptTextures = 1 lets the server send its resource pack without prompting
+            // (the player still gets the prompt; this just allows the option). Default
+            // value matches what vanilla MC writes when you click "Done" in the UI.
+            new NbtByte("acceptTextures", 1),
+        };
+        servers.Insert(0, newEntry);
+        Save(root, path);
+    }
+
+    private static void Save(NbtCompound root, string path)
+    {
+        var file = new NbtFile(root);
+        file.SaveToFile(path, NbtCompression.None);
+    }
+}