From de7c24758345da92f730605da58e855c8bf259bd Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Thu, 8 Oct 2020 12:26:28 -0700
Subject: [PATCH] Add initial version of sector reading to library

---
 DICUI.Library/Utilities/Drive.cs | 35 ++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/DICUI.Library/Utilities/Drive.cs b/DICUI.Library/Utilities/Drive.cs
index 594a99cd..183539bd 100644
--- a/DICUI.Library/Utilities/Drive.cs
+++ b/DICUI.Library/Utilities/Drive.cs
@@ -1,4 +1,5 @@
 using System.IO;
+using System.Linq;
 using DICUI.Data;
 
 namespace DICUI.Utilities
@@ -61,5 +62,39 @@ namespace DICUI.Utilities
             this.InternalDriveType = driveType;
             this.DriveInfo = driveInfo;
         }
+
+        /// <summary>
+        /// Read a sector from the given drive
+        /// </summary>
+        /// <param name="sector">Sector number</param>
+        /// <returns>Byte array representing the sector, null on error</returns>
+        public byte[] ReadSector(long sector)
+        {
+            // Missing drive leter is not supported
+            if (string.IsNullOrEmpty(DriveInfo?.Name))
+                return null;
+
+            // We don't support negative sectors
+            if (sector < 0)
+                return null;
+
+            // Get the starting point
+            int sectorSize = 2048;
+            long start = sector * sectorSize; 
+
+            // Try to read the sector from the device
+            try
+            {
+                var fs = File.OpenRead(@"\\?\E:");
+                fs.Seek(start, SeekOrigin.Begin);
+                byte[] buffer = new byte[sectorSize];
+                fs.Read(buffer, 0, sectorSize);
+                return buffer;
+            }
+            catch
+            {
+                return null;
+            }
+        }
     }
 }