1 files changed, 61 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/Loaders/Npdm/ACID.cs b/src/Ryujinx.HLE/Loaders/Npdm/ACID.cs
new file mode 100644
index 00000000..365495c6
--- /dev/null
+++ b/src/Ryujinx.HLE/Loaders/Npdm/ACID.cs
@@ -0,0 +1,61 @@
+using Ryujinx.HLE.Exceptions;
+using System.IO;
+
+namespace Ryujinx.HLE.Loaders.Npdm
+{
+    public class Acid
+    {
+        private const int AcidMagic = 'A' << 0 | 'C' << 8 | 'I' << 16 | 'D' << 24;
+
+        public byte[] Rsa2048Signature { get; private set; }
+        public byte[] Rsa2048Modulus   { get; private set; }
+        public int    Unknown1         { get; private set; }
+        public int    Flags            { get; private set; }
+
+        public long TitleIdRangeMin { get; private set; }
+        public long TitleIdRangeMax { get; private set; }
+
+        public FsAccessControl      FsAccessControl      { get; private set; }
+        public ServiceAccessControl ServiceAccessControl { get; private set; }
+        public KernelAccessControl  KernelAccessControl  { get; private set; }
+
+        public Acid(Stream stream, int offset)
+        {
+            stream.Seek(offset, SeekOrigin.Begin);
+
+            BinaryReader reader = new BinaryReader(stream);
+
+            Rsa2048Signature = reader.ReadBytes(0x100);
+            Rsa2048Modulus   = reader.ReadBytes(0x100);
+
+            if (reader.ReadInt32() != AcidMagic)
+            {
+                throw new InvalidNpdmException("ACID Stream doesn't contain ACID section!");
+            }
+
+            // Size field used with the above signature (?).
+            Unknown1 = reader.ReadInt32();
+
+            reader.ReadInt32();
+
+            // Bit0 must be 1 on retail, on devunit 0 is also allowed. Bit1 is unknown.
+            Flags = reader.ReadInt32();
+
+            TitleIdRangeMin = reader.ReadInt64();
+            TitleIdRangeMax = reader.ReadInt64();
+
+            int fsAccessControlOffset      = reader.ReadInt32();
+            int fsAccessControlSize        = reader.ReadInt32();
+            int serviceAccessControlOffset = reader.ReadInt32();
+            int serviceAccessControlSize   = reader.ReadInt32();
+            int kernelAccessControlOffset  = reader.ReadInt32();
+            int kernelAccessControlSize    = reader.ReadInt32();
+
+            FsAccessControl = new FsAccessControl(stream, offset + fsAccessControlOffset, fsAccessControlSize);
+
+            ServiceAccessControl = new ServiceAccessControl(stream, offset + serviceAccessControlOffset, serviceAccessControlSize);
+
+            KernelAccessControl = new KernelAccessControl(stream, offset + kernelAccessControlOffset, kernelAccessControlSize);
+        }
+    }
+}