From db7c7ee2734a9ec634cf6e0fa367f67013127917 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Wed, 19 Feb 2025 15:47:05 -0500
Subject: [PATCH] Add simple info check (fixes #18)

---
 NDecrypt.Core/DSTool.cs      | 34 ++++++++++++++++++++++++++++++++--
 NDecrypt.Core/ThreeDSTool.cs | 33 ++++++++++++++++++++++++++++++---
 2 files changed, 62 insertions(+), 5 deletions(-)

diff --git a/NDecrypt.Core/DSTool.cs b/NDecrypt.Core/DSTool.cs
index 7489b64..a52d47e 100644
--- a/NDecrypt.Core/DSTool.cs
+++ b/NDecrypt.Core/DSTool.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Text;
 using SabreTools.IO.Extensions;
 using SabreTools.Models.Nitro;
 using SabreTools.Serialization.Wrappers;
@@ -590,8 +591,37 @@ namespace NDecrypt.Core
         /// <inheritdoc/>
         public string? GetInformation(string filename)
         {
-            // TODO: Get decryption status
-            return null;
+            try
+            {
+                // Open the file for reading
+                using var input = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+
+                // Deserialize the cart information
+                var cart = Nitro.Create(input);
+                if (cart?.Model == null)
+                    return "Error: Not a DS or DSi Rom!";
+
+                // Get a string builder for the status
+                var sb = new StringBuilder();
+                sb.Append("Secure Area: ");
+
+                // Get the encryption status
+                bool? decrypted = CheckIfDecrypted(input);
+                if (decrypted == null)
+                    sb.Append("Empty");
+                else if (decrypted == true)
+                    sb.Append("Decrypted");
+                else
+                    sb.Append("English");
+
+                // Return the status for the secure area
+                return sb.ToString();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex);
+                return null;
+            }
         }
 
         #endregion
diff --git a/NDecrypt.Core/ThreeDSTool.cs b/NDecrypt.Core/ThreeDSTool.cs
index 66272ad..cd77360 100644
--- a/NDecrypt.Core/ThreeDSTool.cs
+++ b/NDecrypt.Core/ThreeDSTool.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Text;
 using SabreTools.IO.Extensions;
 using SabreTools.Models.N3DS;
 using SabreTools.Serialization.Wrappers;
@@ -871,14 +872,40 @@ namespace NDecrypt.Core
         }
 
         #endregion
-    
+
         #region Info
 
         /// <inheritdoc/>
         public string? GetInformation(string filename)
         {
-            // TODO: Get decryption status
-            return null;
+            try
+            {
+                // Open the file for reading
+                using var input = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+
+                // Deserialize the cart information
+                var cart = N3DS.Create(input);
+                if (cart?.Model == null)
+                    return "Error: Not a 3DS cart image!";
+
+                // Get a string builder for the status
+                var sb = new StringBuilder();
+
+                // Iterate over all 8 NCCH partitions
+                for (int p = 0; p < 8; p++)
+                {
+                    bool decrypted = cart.PossiblyDecrypted(p);
+                    sb.AppendLine($"Partition {p}: {(decrypted ? "Decrypted" : "Encrypted")}");
+                }
+
+                // Return the status for all partitions
+                return sb.ToString();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex);
+                return null;
+            }
         }
 
         #endregion