Use managed ntlm on linux-bionic

src/libraries/Common/src/Interop/Unix/System.Net.Security.Native/Interop.GssApiException.cs

@@ -71,13 +71,19 @@ private static string GetGssApiDisplayStatus(Status majorStatus, Status minorSta
 
             private static string? GetGssApiDisplayStatus(Status status, bool isMinor)
             {
+                if (!System.Net.NegotiateAuthenticationPal.HasSystemNetSecurityNative)
+                {
+                    // avoid calling into libSystem.Net.Security.Native.
+                    return null;
+                }
+
                 GssBuffer displayBuffer = default(GssBuffer);
 
                 try
                 {
                     Interop.NetSecurityNative.Status minStat;
                     Interop.NetSecurityNative.Status displayCallStatus = isMinor ?
-                        DisplayMinorStatus(out minStat, status, ref displayBuffer):
+                        DisplayMinorStatus(out minStat, status, ref displayBuffer) :
                         DisplayMajorStatus(out minStat, status, ref displayBuffer);
                     return (Status.GSS_S_COMPLETE != displayCallStatus) ? null : Marshal.PtrToStringUTF8(displayBuffer._data);
                 }

src/libraries/Common/tests/System/Net/Capability.Security.Unix.cs

@@ -1,15 +1,20 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Runtime.InteropServices;
+
 namespace System.Net.Test.Common
 {
     public static partial class Capability
     {
         public static bool IsNtlmInstalled()
         {
-            // GSS on Linux does not work with OpenSSL 3.0. Fix was submitted to gss-ntlm but it will take a while to make to
-            // all supported distributions. The second part of the check should be removed when it does.
-            return Interop.NetSecurityNative.IsNtlmInstalled() && (!PlatformDetection.IsOpenSslSupported || PlatformDetection.OpenSslVersion.Major < 3);
+            return
+                // Linux bionic uses managed NTLM implementation
+                (OperatingSystem.IsLinux() && RuntimeInformation.RuntimeIdentifier.StartsWith("linux-bionic-", StringComparison.Ordinal)) ||
+                // GSS on Linux does not work with OpenSSL 3.0. Fix was submitted to gss-ntlm but it will take a while to make to
+                // all supported distributions. The second part of the check should be removed when it does.
+                Interop.NetSecurityNative.IsNtlmInstalled() && (!PlatformDetection.IsOpenSslSupported || PlatformDetection.OpenSslVersion.Major < 3);
         }
     }
 }

src/libraries/System.Net.Security/src/System/Net/NegotiateAuthenticationPal.Unix.cs

@@ -19,10 +19,13 @@ namespace System.Net
 {
     internal partial class NegotiateAuthenticationPal
     {
+        private static readonly Lazy<bool> _hasSystemNetSecurityNative = new Lazy<bool>(CheckHasSystemNetSecurityNative);
+        internal static bool HasSystemNetSecurityNative => _hasSystemNetSecurityNative.Value;
         private static bool UseManagedNtlm { get; } =
             AppContext.TryGetSwitch("System.Net.Security.UseManagedNtlm", out bool useManagedNtlm) ?
             useManagedNtlm :
-            OperatingSystem.IsMacOS() || OperatingSystem.IsIOS() || OperatingSystem.IsMacCatalyst();
+            OperatingSystem.IsMacOS() || OperatingSystem.IsIOS() || OperatingSystem.IsMacCatalyst() ||
+            (OperatingSystem.IsLinux() && RuntimeInformation.RuntimeIdentifier.StartsWith("linux-bionic-", StringComparison.OrdinalIgnoreCase));
 
         public static NegotiateAuthenticationPal Create(NegotiateAuthenticationClientOptions clientOptions)
         {
@@ -34,7 +37,7 @@ public static NegotiateAuthenticationPal Create(NegotiateAuthenticationClientOpt
                         return ManagedNtlmNegotiateAuthenticationPal.Create(clientOptions);
 
                     case NegotiationInfoClass.Negotiate:
-                        return new ManagedSpnegoNegotiateAuthenticationPal(clientOptions, supportKerberos: true);
+                        return new ManagedSpnegoNegotiateAuthenticationPal(clientOptions, supportKerberos: HasSystemNetSecurityNative);
                 }
             }
 
@@ -559,7 +562,8 @@ private NegotiateAuthenticationStatusCode InitializeSecurityContext(
                 {
                     if (NetEventSource.Log.IsEnabled())
                     {
-                        string protocol = _packageType switch {
+                        string protocol = _packageType switch
+                        {
                             Interop.NetSecurityNative.PackageType.NTLM => "NTLM",
                             Interop.NetSecurityNative.PackageType.Kerberos => "Kerberos",
                             _ => "SPNEGO"
@@ -635,7 +639,8 @@ private NegotiateAuthenticationStatusCode InitializeSecurityContext(
                     {
                         if (NetEventSource.Log.IsEnabled())
                         {
-                            string protocol = _packageType switch {
+                            string protocol = _packageType switch
+                            {
                                 Interop.NetSecurityNative.PackageType.NTLM => "NTLM",
                                 Interop.NetSecurityNative.PackageType.Kerberos => "Kerberos",
                                 _ => isNtlmUsed ? "SPNEGO-NTLM" : "SPNEGO-Kerberos"
@@ -764,5 +769,18 @@ internal static NegotiateAuthenticationStatusCode GetErrorCode(Interop.NetSecuri
                 }
             }
         }
+
+        public static bool CheckHasSystemNetSecurityNative()
+        {
+            try
+            {
+                return Interop.NetSecurityNative.IsNtlmInstalled();
+            }
+            catch (Exception e) when (e is EntryPointNotFoundException || e is DllNotFoundException || e is TypeInitializationException)
+            {
+                // libSystem.Net.Security.Native is not available
+                return false;
+            }
+        }
     }
 }

src/libraries/System.Net.Security/tests/UnitTests/NegotiateAuthenticationTests.cs

@@ -32,7 +32,6 @@ public void Constructor_Overloads_Validation()
         }
 
         [Fact]
-        [SkipOnPlatform(TestPlatforms.LinuxBionic, "https://github.com/dotnet/runtime/issues/93104")]
         public void RemoteIdentity_ThrowsOnUnauthenticated()
         {
             NegotiateAuthenticationClientOptions clientOptions = new NegotiateAuthenticationClientOptions { Credential = s_testCredentialRight, TargetName = "HTTP/foo" };
@@ -66,7 +65,6 @@ public void RemoteIdentity_ThrowsOnDisposed()
         }
 
         [Fact]
-        [SkipOnPlatform(TestPlatforms.LinuxBionic, "https://github.com/dotnet/runtime/issues/93104")]
         public void Package_Unsupported()
         {
             NegotiateAuthenticationClientOptions clientOptions = new NegotiateAuthenticationClientOptions { Package = "INVALID", Credential = s_testCredentialRight, TargetName = "HTTP/foo" };
@@ -98,7 +96,6 @@ public void Package_Unsupported_NTLM()
 
         [Fact]
         [SkipOnPlatform(TestPlatforms.Windows, "The test is specific to GSSAPI / Managed implementations of NegotiateAuthentication")]
-        [SkipOnPlatform(TestPlatforms.LinuxBionic, "https://github.com/dotnet/runtime/issues/93104")]
         public void DefaultNetworkCredentials_NTLM_DoesNotThrow()
         {
             NegotiateAuthenticationClientOptions clientOptions = new NegotiateAuthenticationClientOptions { Package = "NTLM", Credential = CredentialCache.DefaultNetworkCredentials, TargetName = "HTTP/foo" };
@@ -169,7 +166,7 @@ public static IEnumerable<object[]> TestCredentials()
             yield return new object[] { new NetworkCredential("rightusername", "rightpassword") };
             yield return new object[] { new NetworkCredential("rightusername", "rightpassword", "rightdomain") };
             yield return new object[] { new NetworkCredential("[email protected]", "rightpassword") };
-        } 
+        }
 
         [ConditionalTheory(nameof(IsNtlmAvailable))]
         [MemberData(nameof(TestCredentials))]