SoapEndpointMiddleware.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using SoapCore.Extensibility;
using SoapCore.MessageEncoder;
using SoapCore.Meta;
using SoapCore.ServiceModel;
namespace SoapCore
{
public class SoapEndpointMiddleware
{
private readonly ILogger<SoapEndpointMiddleware> _logger;
private readonly RequestDelegate _next;
private readonly SoapOptions _options;
private readonly ServiceDescription _service;
private readonly string _endpointPath;
private readonly SoapSerializer _serializer;
private readonly Binding _binding;
private readonly StringComparison _pathComparisonStrategy;
private readonly ISoapModelBounder _soapModelBounder;
private readonly bool _httpGetEnabled;
private readonly bool _httpsGetEnabled;
private readonly SoapMessageEncoder[] _messageEncoders;
private readonly SerializerHelper _serializerHelper;
[Obsolete]
public SoapEndpointMiddleware(ILogger<SoapEndpointMiddleware> logger, RequestDelegate next, Type serviceType, string path, SoapEncoderOptions[] encoderOptions, SoapSerializer serializer, bool caseInsensitivePath, ISoapModelBounder soapModelBounder, Binding binding, bool httpGetEnabled, bool httpsGetEnabled)
{
_logger = logger;
_next = next;
_endpointPath = path;
_serializer = serializer;
_serializerHelper = new SerializerHelper(_serializer);
_pathComparisonStrategy = caseInsensitivePath ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal;
_service = new ServiceDescription(serviceType);
_soapModelBounder = soapModelBounder;
_binding = binding;
_httpGetEnabled = httpGetEnabled;
_httpsGetEnabled = httpsGetEnabled;
_messageEncoders = new SoapMessageEncoder[encoderOptions.Length];
for (var i = 0; i < encoderOptions.Length; i++)
{
_messageEncoders[i] = new SoapMessageEncoder(encoderOptions[i].MessageVersion, encoderOptions[i].WriteEncoding, encoderOptions[i].ReaderQuotas);
}
}
public SoapEndpointMiddleware(ILogger<SoapEndpointMiddleware> logger, RequestDelegate next, SoapOptions options)
{
_logger = logger;
_next = next;
_options = options;
_endpointPath = options.Path;
_serializer = options.SoapSerializer;
_serializerHelper = new SerializerHelper(_serializer);
_pathComparisonStrategy = options.CaseInsensitivePath ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal;
_service = new ServiceDescription(options.ServiceType);
_soapModelBounder = options.SoapModelBounder;
_binding = options.Binding;
_httpGetEnabled = options.HttpGetEnabled;
_httpsGetEnabled = options.HttpsGetEnabled;
_messageEncoders = new SoapMessageEncoder[options.EncoderOptions.Length];
for (var i = 0; i < options.EncoderOptions.Length; i++)
{
_messageEncoders[i] = new SoapMessageEncoder(options.EncoderOptions[i].MessageVersion, options.EncoderOptions[i].WriteEncoding, options.EncoderOptions[i].ReaderQuotas);
}
}
public async Task Invoke(HttpContext httpContext, IServiceProvider serviceProvider)
{
if (_options != null)
{
if (_options.BufferThreshold > 0 && _options.BufferLimit > 0)
{
httpContext.Request.EnableBuffering(_options.BufferThreshold, _options.BufferLimit);
}
else if (_options.BufferThreshold > 0)
{
httpContext.Request.EnableBuffering(_options.BufferThreshold);
}
else
{
httpContext.Request.EnableBuffering();
}
}
else
{
httpContext.Request.EnableBuffering();
}
var trailPathTuner = serviceProvider.GetServices<TrailingServicePathTuner>().FirstOrDefault();
trailPathTuner?.ConvertPath(httpContext);
if (httpContext.Request.Path.Equals(_endpointPath, _pathComparisonStrategy))
{
if (httpContext.Request.Method?.ToLower() == "get")
{
// If GET is not enabled, either for HTTP or HTTPS, return a 403 instead of the WSDL
if ((httpContext.Request.IsHttps && !_httpsGetEnabled) || (!httpContext.Request.IsHttps && !_httpGetEnabled))
{
httpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
return;
}
}
try
{
_logger.LogDebug($"Received SOAP Request for {httpContext.Request.Path} ({httpContext.Request.ContentLength ?? 0} bytes)");
if (httpContext.Request.Query.ContainsKey("wsdl") && httpContext.Request.Method?.ToLower() == "get")
{
await ProcessMeta(httpContext);
}
else
{
await ProcessOperation(httpContext, serviceProvider);
}
}
catch (Exception ex)
{
_logger.LogCritical(ex, $"An error occurred when trying to service a request on SOAP endpoint: {httpContext.Request.Path}");
// Let's pass this up the middleware chain after we have logged this issue
// and signaled the critical of it
throw;
}
}
else
{
await _next(httpContext);
}
}
private async Task ProcessMeta(HttpContext httpContext)
{
var baseUrl = httpContext.Request.Scheme + "://" + httpContext.Request.Host + httpContext.Request.PathBase + httpContext.Request.Path;
var bodyWriter = _serializer == SoapSerializer.XmlSerializer ? new MetaBodyWriter(_service, baseUrl, _binding) : (BodyWriter)new MetaWCFBodyWriter(_service, baseUrl, _binding);
var responseMessage = Message.CreateMessage(_messageEncoders[0].MessageVersion, null, bodyWriter);
responseMessage = new MetaMessage(responseMessage, _service, _binding);
httpContext.Response.ContentType = _messageEncoders[0].ContentType;
#if ASPNET_21
await _messageEncoders[0].WriteMessageAsync(responseMessage, httpContext.Response.Body);
#endif
#if ASPNET_30
await _messageEncoders[0].WriteMessageAsync(responseMessage, httpContext.Response.BodyWriter);
#endif
}
private async Task ProcessOperation(HttpContext httpContext, IServiceProvider serviceProvider)
{
Message responseMessage;
//Reload the body to ensure we have the full message
var memoryStream = new MemoryStream((int)httpContext.Request.ContentLength.GetValueOrDefault(1024));
await httpContext.Request.Body.CopyToAsync(memoryStream).ConfigureAwait(false);
memoryStream.Seek(0, SeekOrigin.Begin);
httpContext.Request.Body = memoryStream;
//Return metadata if no request, provided this is a GET request
if (httpContext.Request.Body.Length == 0 && httpContext.Request.Method?.ToLower() == "get")
{
await ProcessMeta(httpContext);
return;
}
// Get the encoder based on Content Type
var messageEncoder = _messageEncoders[0];
foreach (var encoder in _messageEncoders)
{
if (encoder.IsContentTypeSupported(httpContext.Request.ContentType))
{
messageEncoder = encoder;
break;
}
}
//Get the message
#if ASPNET_30
var requestMessage = await messageEncoder.ReadMessageAsync(httpContext.Request.BodyReader, 0x10000, httpContext.Request.ContentType);
#endif
#if ASPNET_21
var requestMessage = await messageEncoder.ReadMessageAsync(httpContext.Request.Body, 0x10000, httpContext.Request.ContentType);
#endif
var messageFilters = serviceProvider.GetServices<IMessageFilter>().ToArray();
var asyncMessageFilters = serviceProvider.GetServices<IAsyncMessageFilter>().ToArray();
//Execute request message filters
try
{
foreach (var messageFilter in messageFilters)
{
messageFilter.OnRequestExecuting(requestMessage);
}
foreach (var messageFilter in asyncMessageFilters)
{
await messageFilter.OnRequestExecuting(requestMessage);
}
}
catch (Exception ex)
{
await WriteErrorResponseMessage(ex, StatusCodes.Status500InternalServerError, serviceProvider, requestMessage, httpContext);
return;
}
var messageInspector = serviceProvider.GetService<IMessageInspector>();
object correlationObject;
try
{
correlationObject = messageInspector?.AfterReceiveRequest(ref requestMessage);
}
catch (Exception ex)
{
await WriteErrorResponseMessage(ex, StatusCodes.Status500InternalServerError, serviceProvider, requestMessage, httpContext);
return;
}
var messageInspector2s = serviceProvider.GetServices<IMessageInspector2>();
#pragma warning disable SA1009 // StyleCop has not yet been updated to support tuples
var correlationObjects2 = default(List<(IMessageInspector2 inspector, object correlationObject)>);
#pragma warning restore SA1009
try
{
#pragma warning disable SA1008 // StyleCop has not yet been updated to support tuples
correlationObjects2 = messageInspector2s.Select(mi => (inspector: mi, correlationObject: mi.AfterReceiveRequest(ref requestMessage, _service))).ToList();
#pragma warning restore SA1008
}
catch (Exception ex)
{
await WriteErrorResponseMessage(ex, StatusCodes.Status500InternalServerError, serviceProvider, requestMessage, httpContext);
return;
}
// for getting soapaction and parameters in body
// GetReaderAtBodyContents must not be called twice in one request
using (var reader = requestMessage.GetReaderAtBodyContents())
{
var soapAction = HeadersHelper.GetSoapAction(httpContext, requestMessage, reader);
requestMessage.Headers.Action = soapAction;
var operation = _service.Operations.FirstOrDefault(o => o.SoapAction.Equals(soapAction, StringComparison.Ordinal) || o.Name.Equals(soapAction, StringComparison.Ordinal));
if (operation == null)
{
throw new InvalidOperationException($"No operation found for specified action: {requestMessage.Headers.Action}");
}
_logger.LogInformation($"Request for operation {operation.Contract.Name}.{operation.Name} received");
try
{
//Create an instance of the service class
var serviceInstance = serviceProvider.GetRequiredService(_service.ServiceType);
SetMessageHeadersToProperty(requestMessage, serviceInstance);
// Get operation arguments from message
var arguments = GetRequestArguments(requestMessage, reader, operation, httpContext);
ExecuteFiltersAndTune(httpContext, serviceProvider, operation, arguments, serviceInstance);
var invoker = serviceProvider.GetService<IOperationInvoker>() ?? new DefaultOperationInvoker();
var responseObject = await invoker.InvokeAsync(operation.DispatchMethod, serviceInstance, arguments);
var resultOutDictionary = new Dictionary<string, object>();
foreach (var parameterInfo in operation.OutParameters)
{
resultOutDictionary[parameterInfo.Name] = arguments[parameterInfo.Index];
}
responseMessage = CreateResponseMessage(operation, responseObject, resultOutDictionary, soapAction, requestMessage);
httpContext.Response.ContentType = httpContext.Request.ContentType;
httpContext.Response.Headers["SOAPAction"] = responseMessage.Headers.Action;
correlationObjects2.ForEach(mi => mi.inspector.BeforeSendReply(ref responseMessage, _service, mi.correlationObject));
messageInspector?.BeforeSendReply(ref responseMessage, correlationObject);
SetHttpResponse(httpContext, responseMessage);
#if ASPNET_30
await _messageEncoders[0].WriteMessageAsync(responseMessage, httpContext.Response.BodyWriter);
#endif
#if ASPNET_21
await _messageEncoders[0].WriteMessageAsync(responseMessage, httpContext.Response.Body);
#endif
}
catch (Exception exception)
{
if (exception is TargetInvocationException targetInvocationException)
{
exception = targetInvocationException.InnerException;
}
_logger.LogWarning(0, exception, exception?.Message);
responseMessage = await WriteErrorResponseMessage(exception, StatusCodes.Status500InternalServerError, serviceProvider, requestMessage, httpContext);
}
}
// Execute response message filters
try
{
foreach (var messageFilter in messageFilters)
{
messageFilter.OnResponseExecuting(responseMessage);
}
foreach (var messageFilter in asyncMessageFilters.Reverse())
{
await messageFilter.OnResponseExecuting(responseMessage);
}
}
catch (Exception ex)
{
responseMessage = await WriteErrorResponseMessage(ex, StatusCodes.Status500InternalServerError, serviceProvider, requestMessage, httpContext);
}
}
private Message CreateResponseMessage(OperationDescription operation, object responseObject, Dictionary<string, object> resultOutDictionary, string soapAction, Message requestMessage)
{
Message responseMessage;
// Create response message
var bodyWriter = new ServiceBodyWriter(_serializer, operation, responseObject, resultOutDictionary);
if (_messageEncoders[0].MessageVersion.Addressing == AddressingVersion.WSAddressing10)
{
responseMessage = Message.CreateMessage(_messageEncoders[0].MessageVersion, soapAction, bodyWriter);
responseMessage = new CustomMessage(responseMessage);
responseMessage.Headers.Action = operation.ReplyAction;
responseMessage.Headers.RelatesTo = requestMessage.Headers.MessageId;
responseMessage.Headers.To = requestMessage.Headers.ReplyTo?.Uri;
}
else
{
responseMessage = Message.CreateMessage(_messageEncoders[0].MessageVersion, null, bodyWriter);
responseMessage = new CustomMessage(responseMessage);
if (responseObject != null)
{
var messageHeaderMembers = responseObject.GetType().GetMembersWithAttribute<MessageHeaderAttribute>();
foreach (var messageHeaderMember in messageHeaderMembers)
{
var messageHeaderAttribute = messageHeaderMember.GetCustomAttribute<MessageHeaderAttribute>();
responseMessage.Headers.Add(MessageHeader.CreateHeader(messageHeaderAttribute.Name ?? messageHeaderMember.Name, operation.Contract.Namespace, messageHeaderMember.GetPropertyOrFieldValue(responseObject)));
}
}
}
return responseMessage;
}
private void ExecuteFiltersAndTune(HttpContext httpContext, IServiceProvider serviceProvider, OperationDescription operation, object[] arguments, object serviceInstance)
{
// Execute model binding filters
object modelBindingOutput = null;
foreach (var modelBindingFilter in serviceProvider.GetServices<IModelBindingFilter>())
{
foreach (var modelType in modelBindingFilter.ModelTypes)
{
foreach (var parameterInfo in operation.InParameters)
{
var arg = arguments[parameterInfo.Index];
if (arg != null && arg.GetType() == modelType)
{
modelBindingFilter.OnModelBound(arg, serviceProvider, out modelBindingOutput);
}
}
}
}
// Execute Mvc ActionFilters
foreach (var actionFilterAttr in operation.DispatchMethod.CustomAttributes.Where(a => a.AttributeType.Name == "ServiceFilterAttribute"))
{
var actionFilter = serviceProvider.GetService(actionFilterAttr.ConstructorArguments[0].Value as Type);
actionFilter.GetType().GetMethod("OnSoapActionExecuting")?.Invoke(actionFilter, new[] { operation.Name, arguments, httpContext, modelBindingOutput });
}
// Invoke OnModelBound
_soapModelBounder?.OnModelBound(operation.DispatchMethod, arguments);
// Tune service instance for operation call
var serviceOperationTuners = serviceProvider.GetServices<IServiceOperationTuner>();
foreach (var operationTuner in serviceOperationTuners)
{
operationTuner.Tune(httpContext, serviceInstance, operation);
}
}
private void SetMessageHeadersToProperty(Message requestMessage, object serviceInstance)
{
var headerProperty = _service.ServiceType.GetProperty("MessageHeaders");
if (headerProperty != null && headerProperty.PropertyType == requestMessage.Headers.GetType())
{
headerProperty.SetValue(serviceInstance, requestMessage.Headers);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private object[] GetRequestArguments(Message requestMessage, System.Xml.XmlDictionaryReader xmlReader, OperationDescription operation, HttpContext httpContext)
{
var arguments = new object[operation.AllParameters.Length];
// if any ordering issues, possible to rewrite like:
/*while (!xmlReader.EOF)
{
var parameterInfo = operation.InParameters.FirstOrDefault(p => p.Name == xmlReader.LocalName && p.Namespace == xmlReader.NamespaceURI);
if (parameterInfo == null)
{
xmlReader.Skip();
continue;
}
var parameterName = parameterInfo.Name;
var parameterNs = parameterInfo.Namespace;
...
}*/
// Find the element for the operation's data
//var saa =xmlReader.ReadInnerXml();
if (!operation.IsMessageContractRequest)
{
xmlReader.ReadStartElement(operation.Name, operation.Contract.Namespace);
int index = 0;
foreach (var parameterInfo in operation.InParameters)
{
var parameterType = parameterInfo.Parameter.ParameterType;
if (parameterType == typeof(HttpContext))
{
arguments[parameterInfo.Index] = httpContext;
}
else
{
arguments[parameterInfo.Index] = _serializerHelper.DeserializeInputParameter(xmlReader, parameterType, parameterInfo.Name, operation.Contract.Namespace, parameterInfo);
}
index = parameterInfo.Index;
}
//Web½Ó¿Ú´«ÊäÈÕÖ¾¼Ç¼
httpContext.Request.Body.Position = 0;
StreamReader streamReader = new StreamReader(httpContext.Request.Body);
var s = streamReader.ReadToEnd();
arguments[index] = s;
}
else
{
// MessageContracts are constrained to having one "InParameter". We can do special logic on
// for this
Debug.Assert(operation.InParameters.Length == 1, "MessageContracts are constrained to having one 'InParameter'");
var parameterInfo = operation.InParameters[0];
var parameterType = parameterInfo.Parameter.ParameterType;
var messageContractAttribute = parameterType.GetCustomAttribute<MessageContractAttribute>();
Debug.Assert(messageContractAttribute != null, "operation.IsMessageContractRequest should be false if this is null");
var @namespace = parameterInfo.Namespace ?? operation.Contract.Namespace;
if (messageContractAttribute.IsWrapped && !parameterType.GetMembersWithAttribute<MessageHeaderAttribute>().Any())
{
// It's wrapped so we treat it like normal!
arguments[parameterInfo.Index] = _serializerHelper.DeserializeInputParameter(xmlReader, parameterInfo.Parameter.ParameterType, parameterInfo.Name, @namespace, parameterInfo);
}
else
{
var messageHeadersMembers = parameterType.GetPropertyOrFieldMembers().Where(x => x.GetCustomAttribute<MessageHeaderAttribute>() != null).ToArray();
var wrapperObject = Activator.CreateInstance(parameterInfo.Parameter.ParameterType);
for (var i = 0; i < requestMessage.Headers.Count; i++)
{
var header = requestMessage.Headers[i];
var member = messageHeadersMembers.FirstOrDefault(x => x.Name == header.Name);
if (member != null)
{
var messageHeaderAttribute = member.GetCustomAttribute<MessageHeaderAttribute>();
var reader = requestMessage.Headers.GetReaderAtHeader(i);
var value = _serializerHelper.DeserializeInputParameter(reader, member.GetPropertyOrFieldType(), messageHeaderAttribute.Name ?? member.Name, messageHeaderAttribute.Namespace ?? @namespace);
member.SetValueToPropertyOrField(wrapperObject, value);
}
}
// This object isn't a wrapper element, so we will hunt for the nested message body
// member inside of it
var messageBodyMembers = parameterType.GetPropertyOrFieldMembers().Where(x => x.GetCustomAttribute<MessageBodyMemberAttribute>() != null).Select(mi => new
{
Member = mi,
MessageBodyMemberAttribute = mi.GetCustomAttribute<MessageBodyMemberAttribute>()
}).OrderBy(x => x.MessageBodyMemberAttribute.Order);
if (messageContractAttribute.IsWrapped)
{
xmlReader.Read();
}
foreach (var messageBodyMember in messageBodyMembers)
{
var messageBodyMemberAttribute = messageBodyMember.MessageBodyMemberAttribute;
var messageBodyMemberInfo = messageBodyMember.Member;
var innerParameterName = messageBodyMemberAttribute.Name ?? messageBodyMemberInfo.Name;
var innerParameterNs = messageBodyMemberAttribute.Namespace ?? @namespace;
var innerParameterType = messageBodyMemberInfo.GetPropertyOrFieldType();
//xmlReader.MoveToStartElement(innerParameterName, innerParameterNs);
var innerParameter = _serializerHelper.DeserializeInputParameter(xmlReader, innerParameterType, innerParameterName, innerParameterNs, parameterInfo);
messageBodyMemberInfo.SetValueToPropertyOrField(wrapperObject, innerParameter);
}
arguments[parameterInfo.Index] = wrapperObject;
}
}
foreach (var parameterInfo in operation.OutParameters)
{
if (arguments[parameterInfo.Index] != null)
{
// do not overwrite input ref parameters
continue;
}
if (parameterInfo.Parameter.ParameterType.Name == "Guid&")
{
arguments[parameterInfo.Index] = Guid.Empty;
}
else if (parameterInfo.Parameter.ParameterType.Name == "String&" || parameterInfo.Parameter.ParameterType.GetElementType().IsArray)
{
arguments[parameterInfo.Index] = null;
}
else
{
var type = parameterInfo.Parameter.ParameterType.GetElementType();
arguments[parameterInfo.Index] = Activator.CreateInstance(type);
}
}
return arguments;
}
/// <summary>
/// Helper message to write an error response message in case of an exception.
/// </summary>
/// <param name="exception">
/// The exception that caused the failure.
/// </param>
/// <param name="statusCode">
/// The HTTP status code that shall be returned to the caller.
/// </param>
/// <param name="serviceProvider">
/// The DI container.
/// </param>
/// <param name="requestMessage">
/// The Message for the incoming request
/// </param>
/// <param name="httpContext">
/// The HTTP context that received the response message.
/// </param>
/// <returns>
/// Returns the constructed message (which is implicitly written to the response
/// and therefore must not be handled by the caller).
/// </returns>
private async Task<Message> WriteErrorResponseMessage(
Exception exception,
int statusCode,
IServiceProvider serviceProvider,
Message requestMessage,
HttpContext httpContext)
{
var faultExceptionTransformer = serviceProvider.GetRequiredService<IFaultExceptionTransformer>();
var faultMessage = faultExceptionTransformer.ProvideFault(exception, _messageEncoders[0].MessageVersion);
httpContext.Response.ContentType = httpContext.Request.ContentType;
httpContext.Response.Headers["SOAPAction"] = faultMessage.Headers.Action;
httpContext.Response.StatusCode = statusCode;
SetHttpResponse(httpContext, faultMessage);
if (_messageEncoders[0].MessageVersion.Addressing == AddressingVersion.WSAddressing10)
{
// TODO: Some additional work needs to be done in order to support setting the action. Simply setting it to
// "http://www.w3.org/2005/08/addressing/fault" will cause the WCF Client to not be able to figure out the type
faultMessage.Headers.RelatesTo = requestMessage.Headers.MessageId;
faultMessage.Headers.To = requestMessage.Headers.ReplyTo?.Uri;
}
#if ASPNET_30
await _messageEncoders[0].WriteMessageAsync(faultMessage, httpContext.Response.BodyWriter);
#endif
#if ASPNET_21
await _messageEncoders[0].WriteMessageAsync(faultMessage, httpContext.Response.Body);
#endif
return faultMessage;
}
private void SetHttpResponse(HttpContext httpContext, Message message)
{
if (!message.Properties.TryGetValue(HttpResponseMessageProperty.Name, out var value)
#pragma warning disable SA1119 // StatementMustNotUseUnnecessaryParenthesis
|| !(value is HttpResponseMessageProperty httpProperty))
#pragma warning restore SA1119 // StatementMustNotUseUnnecessaryParenthesis
{
return;
}
httpContext.Response.StatusCode = (int)httpProperty.StatusCode;
var feature = httpContext.Features.Get<IHttpResponseFeature>();
if (feature != null && !string.IsNullOrEmpty(httpProperty.StatusDescription))
{
feature.ReasonPhrase = httpProperty.StatusDescription;
}
foreach (string key in httpProperty.Headers.Keys)
{
httpContext.Response.Headers.Add(key, httpProperty.Headers.GetValues(key));
}
}
}
}