Add support for DataPackRat's f2d/d2f disk images

They are identified by "WC DISK IMAGE" in the header
2025-12-16 19:24:25 +00:00 · 2018-08-29 13:09:04 +02:00
parent dcfe4b21a0
commit ca179dd424
7 changed files with 824 additions and 0 deletions
--- a/DiscImageChef.DiscImages/WCDiskImage/Identify.cs
+++ b/DiscImageChef.DiscImages/WCDiskImage/Identify.cs
@@ -0,0 +1,82 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Identify.cs
+// Author(s)      : Michael Drüing <michael@drueing.de>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Identifies d2f/WC DISK IMAGE disk images.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This library is free software; you can redistribute it and/or modify
+//     it under the terms of the GNU Lesser General Public License as
+//     published by the Free Software Foundation; either version 2.1 of the
+//     License, or (at your option) any later version.
+//
+//     This library is distributed in the hope that it will be useful, but
+//     WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+//     Lesser General Public License for more details.
+//
+//     You should have received a copy of the GNU Lesser General Public
+//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2018 Michael Drüing
+// Copyright © 2011-2018 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+using System.IO;
+using System.Text;
+using System.Runtime.InteropServices;
+using DiscImageChef.CommonTypes.Interfaces;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class WCDiskImage
+    {
+        public bool Identify(IFilter imageFilter)
+        {
+            Stream stream = imageFilter.GetDataForkStream();
+            stream.Seek(0, SeekOrigin.Begin);
+
+            if (stream.Length < 32) return false;
+
+            byte[] header = new byte[32];
+            stream.Read(header, 0, 32);
+
+            IntPtr hdrPtr = Marshal.AllocHGlobal(32);
+            Marshal.Copy(header, 0, hdrPtr, 32);
+            WCDiskImageFileHeader fheader = (WCDiskImageFileHeader)Marshal.PtrToStructure(hdrPtr, typeof(WCDiskImageFileHeader));
+            Marshal.FreeHGlobal(hdrPtr);
+
+            /* check the signature */
+            if (Encoding.ASCII.GetString(fheader.signature).TrimEnd('\x00') != WCDiskImage.fileSignature)
+                return false;
+
+            /* Some sanity checks on the values we just read. */
+            if (fheader.version > 1) return false;
+
+            if (fheader.heads < 1 || fheader.heads > 2) return false;
+
+            if (fheader.sectorsPerTrack < 8 || fheader.sectorsPerTrack > 18) return false;
+
+            if (fheader.cylinders < 1 || fheader.cylinders > 80) return false;
+
+            if (fheader.extraTracks[0] > 1 || fheader.extraTracks[1] > 1 || fheader.extraTracks[2] > 1 || fheader.extraTracks[3] > 1)
+                return false;
+
+            if (((byte)fheader.extraFlags & ~0x03) != 0) return false;
+
+            // TODO: validate all sectors
+            // For now, having a valid header will suffice.
+            return true;
+        }
+    }
+}