Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/ExceptionMapper.cs

@@ -0,0 +1,85 @@
+//------------------------------------------------------------------------------
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Globalization;
+using System.IdentityModel.Protocols.WSTrust;
+using System.IdentityModel.Tokens;
+using System.Reflection;
+using System.Runtime;
+using System.ServiceModel;
+using System.ServiceModel.Diagnostics;
+
+namespace System.ServiceModel
+{
+    /// <summary>
+    /// Defines the mapping to be used for translating exceptions to faults.
+    /// </summary>
+    public class ExceptionMapper
+    {
+        internal const string SoapSenderFaultCode = "Sender";
+
+        /// <summary>
+        /// ExceptionMapper constructor.
+        /// </summary>
+        public ExceptionMapper()
+        {
+        }
+
+        /// <summary>
+        /// Translates the input exception to a fault using the mapping defined in ExceptionMap.
+        /// </summary>
+        /// <param name="ex">The exception to be mapped to a fault.</param>
+        /// <returns>The fault corresponding to the input exception.</returns>
+        public virtual FaultException FromException(Exception ex)
+        {
+            return FromException(ex, String.Empty, String.Empty);
+        }
+
+        /// <summary>
+        /// Translates the input exception to a fault using the mapping defined in ExceptionMap.
+        /// </summary>
+        /// <param name="ex">The exception to be mapped to a fault.</param>
+        /// <param name="soapNamespace">The SOAP Namespace to be used when generating the mapped fault.</param>
+        /// <param name="trustNamespace">The WS-Trust Namespace to be used when generating the mapped fault.</param>
+        /// <returns>The fault corresponding to the input exception.</returns>
+        public virtual FaultException FromException(Exception ex, string soapNamespace, string trustNamespace)
+        {
+            return null;
+        }
+
+        /// <summary>
+        /// Determines whether an exception that occurred during the processing of a security token 
+        /// should be handled using the defined ExceptionMap.
+        /// </summary>
+        /// <param name="ex">The input exception.</param>
+        /// <returns>A boolean value indicating whether the exception should be handled using the defined ExceptionMap.</returns>
+        public virtual bool HandleSecurityTokenProcessingException(Exception ex)
+        {
+            if (Fx.IsFatal(ex))
+            {
+                return false;
+            }
+
+            if (ex is FaultException)
+            {
+                // Just throw the original exception.
+                return false;
+            }
+            else
+            {
+                FaultException faultException = FromException(ex);
+                if (faultException != null)
+                {
+                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(faultException);
+                }
+
+                // The exception is not one of the recognized exceptions. Just throw the original exception.
+                return false;
+            }
+        }
+    }
+}