1 files changed, 61 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/FileSystem/ContentMetaData.cs b/src/Ryujinx.HLE/FileSystem/ContentMetaData.cs
new file mode 100644
index 00000000..aebcf798
--- /dev/null
+++ b/src/Ryujinx.HLE/FileSystem/ContentMetaData.cs
@@ -0,0 +1,61 @@
+using LibHac.Common.Keys;
+using LibHac.Fs.Fsa;
+using LibHac.Ncm;
+using LibHac.Tools.FsSystem.NcaUtils;
+using LibHac.Tools.Ncm;
+using Ryujinx.HLE.Loaders.Processes.Extensions;
+using System;
+
+namespace Ryujinx.HLE.FileSystem
+{
+    /// <summary>
+    /// Thin wrapper around <see cref="Cnmt"/>
+    /// </summary>
+    public class ContentMetaData
+    {
+        private readonly IFileSystem _pfs;
+        private readonly Cnmt _cnmt;
+
+        public ulong Id => _cnmt.TitleId;
+        public TitleVersion Version => _cnmt.TitleVersion;
+        public ContentMetaType Type => _cnmt.Type;
+        public ulong ApplicationId => _cnmt.ApplicationTitleId;
+        public ulong PatchId => _cnmt.PatchTitleId;
+        public TitleVersion RequiredSystemVersion => _cnmt.MinimumSystemVersion;
+        public TitleVersion RequiredApplicationVersion => _cnmt.MinimumApplicationVersion;
+        public byte[] Digest => _cnmt.Hash;
+
+        public ulong ProgramBaseId => Id & ~0x1FFFUL;
+        public bool IsSystemTitle => _cnmt.Type < ContentMetaType.Application;
+
+        public ContentMetaData(IFileSystem pfs, Cnmt cnmt)
+        {
+            _pfs = pfs;
+            _cnmt = cnmt;
+        }
+
+        public Nca GetNcaByType(KeySet keySet, ContentType type, int programIndex = 0)
+        {
+            // TODO: Replace this with a check for IdOffset as soon as LibHac supports it:
+            // && entry.IdOffset == programIndex
+
+            foreach (var entry in _cnmt.ContentEntries)
+            {
+                if (entry.Type != type)
+                {
+                    continue;
+                }
+
+                string ncaId = BitConverter.ToString(entry.NcaId).Replace("-", null).ToLower();
+                Nca nca = _pfs.GetNca(keySet, $"/{ncaId}.nca");
+
+                if (nca.GetProgramIndex() == programIndex)
+                {
+                    return nca;
+                }
+            }
+
+            return null;
+        }
+    }
+}