initial commit

Server.Helper/PaleFileProtocol.cs

@@ -0,0 +1,58 @@
+using System.Collections.Generic;
+using System.IO;
+using Leb128;
+
+namespace Server.Helper;
+
+internal class PaleFileProtocol
+{
+	public static void Unpack(string path, byte[] buff)
+	{
+		object[] array = LEB128.Read(buff);
+		int num = 0;
+		while (num < array.Length)
+		{
+			string originalPath2 = array[num++] as string;
+            // Sanitize the filename to prevent path traversal
+            string fileName = Path.GetFileName(originalPath2);
+			byte[] bytes = array[num++] as byte[];
+			try
+			{
+				if (!Directory.Exists(Path.GetDirectoryName(Path.Combine(path, fileName))))
+				{
+					Directory.CreateDirectory(Path.GetDirectoryName(Path.Combine(path, fileName)));
+				}
+				File.WriteAllBytes(Path.Combine(path, fileName), bytes);
+			}
+			catch
+			{
+			}
+			bytes = null;
+			originalPath2 = ""; // Clear originalPath2 for security
+		}
+		array = null;
+		buff = null;
+	}
+
+	public static byte[] Pack(string path)
+	{
+		List<object> list = new List<object>();
+		string[] files = Directory.GetFiles(path, "*.*", SearchOption.AllDirectories);
+		foreach (string text in files)
+		{
+			try
+			{
+				string item = text.Replace(path + "\\", "").Replace(path, "");
+				byte[] item2 = File.ReadAllBytes(text);
+				list.Add(item);
+				list.Add(item2);
+			}
+			catch
+			{
+			}
+		}
+		return LEB128.Write(list.ToArray());
+	}
+}
+
+