From a9efb269620c62a2ddd326b8824ab1173710590c Mon Sep 17 00:00:00 2001
From: kdl <kdl@itamail.de>
Date: Sat, 10 Jun 2023 19:08:28 +0200
Subject: [PATCH] add Owner Validation switch

---
 LibGit2Sharp/Core/Proxy.cs     | 37 ++++++++++++++++++++++++++++++++++
 LibGit2Sharp/GlobalSettings.cs |  9 +++++++++
 2 files changed, 46 insertions(+)

diff --git a/LibGit2Sharp/Core/Proxy.cs b/LibGit2Sharp/Core/Proxy.cs
index 50cefc0df..fcc015d4b 100644
--- a/LibGit2Sharp/Core/Proxy.cs
+++ b/LibGit2Sharp/Core/Proxy.cs
@@ -3397,6 +3397,8 @@ private enum LibGit2Option
             SetOdbLoosePriority,             // GIT_OPT_SET_ODB_LOOSE_PRIORITY,
             GetExtensions,                   // GIT_OPT_GET_EXTENSIONS,
             SetExtensions,                   // GIT_OPT_SET_EXTENSIONS
+            GetOwnerValidation,              // GIT_OPT_GET_OWNER_VALIDATION
+            SetOwnerValidation               // GIT_OPT_SET_OWNER_VALIDATION
         }
 
         /// <summary>
@@ -3570,6 +3572,41 @@ public static string[] git_libgit2_opts_get_extensions()
             }
         }
 
+        public static string git_libgit2_opts_get_owner_validation()
+        {
+            string userAgent;
+
+            using (var buf = new GitBuf())
+            {
+                int res;
+                if (isOSXArm64)
+                    res = NativeMethods.git_libgit2_opts_osxarm64((int)LibGit2Option.GetUserAgent, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, buf);
+                else
+                    res = NativeMethods.git_libgit2_opts((int)LibGit2Option.GetOwnerValidation, buf);
+                Ensure.ZeroResult(res);
+
+                userAgent = LaxUtf8Marshaler.FromNative(buf.ptr) ?? string.Empty;
+            }
+
+            return userAgent;
+        }
+
+        /// <summary>
+        /// Enable or disable the ownership validation
+        /// </summary>
+        /// <param name="enabled">true to enable the ownership validation capabilty, false otherwise</param>
+        public static void git_libgit2_opts_set_owner_validation(bool enabled)
+        {
+            // libgit2 expects non-zero value for true
+            int res;
+            if (isOSXArm64)
+                res = NativeMethods.git_libgit2_opts_osxarm64((int)LibGit2Option.SetOwnerValidation, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, enabled ? 1 : 0);
+            else
+                res = NativeMethods.git_libgit2_opts((int)LibGit2Option.SetOwnerValidation, enabled ? 1 : 0);
+            Ensure.ZeroResult(res);
+        }
+
+
         #endregion
 
         #region git_worktree_
diff --git a/LibGit2Sharp/GlobalSettings.cs b/LibGit2Sharp/GlobalSettings.cs
index 31cba0965..6c5d00d08 100644
--- a/LibGit2Sharp/GlobalSettings.cs
+++ b/LibGit2Sharp/GlobalSettings.cs
@@ -346,6 +346,15 @@ public static void SetStrictHashVerification(bool enabled)
             Proxy.git_libgit2_opts_enable_strict_hash_verification(enabled);
         }
 
+        /// <summary>
+        /// Enable or disable dubious owner validation
+        /// </summary>
+        /// <param name="enabled">true to enable owner validation; false otherwise.</param>
+        public static void SetOwnerValidation(bool enabled)
+        {
+            Proxy.git_libgit2_opts_set_owner_validation(enabled);
+        }
+
         /// <summary>
         /// Enable or disable the libgit2 cache
         /// </summary>