337 lines
12 KiB
C#
337 lines
12 KiB
C#
//
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// WebHttpBehavior.cs
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//
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// Author:
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// Atsushi Enomoto <atsushi@ximian.com>
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//
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// Copyright (C) 2008 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Net;
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using System.ServiceModel;
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using System.ServiceModel.Channels;
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using System.ServiceModel.Dispatcher;
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using System.ServiceModel.Web;
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namespace System.ServiceModel.Description
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{
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internal static class WebHttpBehaviorExtensions
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{
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public static WebAttributeInfo GetWebAttributeInfo (this OperationDescription od)
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{
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foreach (IOperationBehavior ob in od.Behaviors) {
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var wg = ob as WebGetAttribute;
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if (wg != null)
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return wg.Info;
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var wi = ob as WebInvokeAttribute;
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if (wi != null)
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return wi.Info;
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}
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return new WebGetAttribute ().Info; // blank one
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}
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}
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public class WebHttpBehavior : IEndpointBehavior
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{
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public WebHttpBehavior ()
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{
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DefaultBodyStyle = WebMessageBodyStyle.Bare;
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DefaultOutgoingRequestFormat = WebMessageFormat.Xml;
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DefaultOutgoingResponseFormat = WebMessageFormat.Xml;
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}
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public virtual bool AutomaticFormatSelectionEnabled { get; set; }
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public virtual bool FaultExceptionEnabled { get; set; }
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public virtual bool HelpEnabled { get; set; }
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public virtual WebMessageBodyStyle DefaultBodyStyle { get; set; }
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public virtual WebMessageFormat DefaultOutgoingRequestFormat { get; set; }
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public virtual WebMessageFormat DefaultOutgoingResponseFormat { get; set; }
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public virtual void AddBindingParameters (ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
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{
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// nothing
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}
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[MonoTODO]
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protected virtual void AddClientErrorInspector (ServiceEndpoint endpoint, ClientRuntime clientRuntime)
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{
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// clientRuntime.MessageInspectors.Add (something);
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}
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#if !MOBILE && !XAMMAC_4_5
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protected virtual void AddServerErrorHandlers (ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
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{
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endpointDispatcher.ChannelDispatcher.ErrorHandlers.Add (new WebHttpErrorHandler ());
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}
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#endif
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public virtual void ApplyClientBehavior (ServiceEndpoint endpoint, ClientRuntime clientRuntime)
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{
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AddClientErrorInspector (endpoint, clientRuntime);
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foreach (ClientOperation oper in clientRuntime.Operations) {
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var req = GetRequestClientFormatter (endpoint.Contract.Operations.Find (oper.Name), endpoint);
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var res = GetReplyClientFormatter (endpoint.Contract.Operations.Find (oper.Name), endpoint);
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oper.Formatter = new ClientPairFormatter (req, res);
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}
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}
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public virtual void ApplyDispatchBehavior (ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
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{
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#if MOBILE || XAMMAC_4_5
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throw new NotImplementedException ();
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#else
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endpointDispatcher.DispatchRuntime.OperationSelector = GetOperationSelector (endpoint);
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// FIXME: get HostNameComparisonMode from WebHttpBinding by some means.
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endpointDispatcher.FilterPriority = 1; // It is to take higher priority than that of ServiceMetadataExtension (whose URL likely conflicts with this one).
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endpointDispatcher.AddressFilter = new PrefixEndpointAddressMessageFilter (endpoint.Address);
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endpointDispatcher.ContractFilter = new MatchAllMessageFilter ();
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AddServerErrorHandlers (endpoint, endpointDispatcher);
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foreach (DispatchOperation oper in endpointDispatcher.DispatchRuntime.Operations) {
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var req = GetRequestDispatchFormatter (endpoint.Contract.Operations.Find (oper.Name), endpoint);
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var res = GetReplyDispatchFormatter (endpoint.Contract.Operations.Find (oper.Name), endpoint);
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oper.Formatter = new DispatchPairFormatter (req, res);
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}
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endpointDispatcher.DispatchRuntime.UnhandledDispatchOperation = new DispatchOperation (endpointDispatcher.DispatchRuntime, "*", "*", "*") {
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Invoker = new EndpointNotFoundOperationInvoker (),
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DeserializeRequest = false,
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SerializeReply = false};
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#endif
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}
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internal class ClientPairFormatter : IClientMessageFormatter
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{
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public ClientPairFormatter (IClientMessageFormatter request, IClientMessageFormatter reply)
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{
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this.request = request;
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this.reply = reply;
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}
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IClientMessageFormatter request, reply;
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public Message SerializeRequest (MessageVersion messageVersion, object [] parameters)
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{
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return request.SerializeRequest (messageVersion, parameters);
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}
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public object DeserializeReply (Message message, object [] parameters)
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{
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return reply.DeserializeReply (message, parameters);
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}
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}
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#if !MOBILE && !XAMMAC_4_5
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internal class DispatchPairFormatter : IDispatchMessageFormatter
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{
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public DispatchPairFormatter (IDispatchMessageFormatter request, IDispatchMessageFormatter reply)
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{
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this.request = request;
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this.reply = reply;
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}
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IDispatchMessageFormatter request;
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IDispatchMessageFormatter reply;
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public void DeserializeRequest (Message message, object [] parameters)
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{
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request.DeserializeRequest (message, parameters);
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}
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public Message SerializeReply (MessageVersion messageVersion, object [] parameters, object result)
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{
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return reply.SerializeReply (messageVersion, parameters, result);
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}
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}
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protected virtual WebHttpDispatchOperationSelector GetOperationSelector (ServiceEndpoint endpoint)
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{
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return new WebHttpDispatchOperationSelector (endpoint);
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}
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#endif
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protected virtual QueryStringConverter GetQueryStringConverter (OperationDescription operationDescription)
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{
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return new QueryStringConverter ();
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}
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protected virtual IClientMessageFormatter GetReplyClientFormatter (OperationDescription operationDescription, ServiceEndpoint endpoint)
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{
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return new WebMessageFormatter.ReplyClientFormatter (operationDescription, endpoint, GetQueryStringConverter (operationDescription), this);
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}
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#if !MOBILE
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protected virtual IDispatchMessageFormatter GetReplyDispatchFormatter (OperationDescription operationDescription, ServiceEndpoint endpoint)
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{
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return new WebMessageFormatter.ReplyDispatchFormatter (operationDescription, endpoint, GetQueryStringConverter (operationDescription), this);
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}
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#endif
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protected virtual IClientMessageFormatter GetRequestClientFormatter (OperationDescription operationDescription, ServiceEndpoint endpoint)
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{
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return new WebMessageFormatter.RequestClientFormatter (operationDescription, endpoint, GetQueryStringConverter (operationDescription), this);
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}
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#if !MOBILE
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protected virtual IDispatchMessageFormatter GetRequestDispatchFormatter (OperationDescription operationDescription, ServiceEndpoint endpoint)
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{
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return new WebMessageFormatter.RequestDispatchFormatter (operationDescription, endpoint, GetQueryStringConverter (operationDescription), this);
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}
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#endif
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WebMessageBodyStyle GetBodyStyle (WebAttributeInfo wai)
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{
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return wai != null && wai.IsBodyStyleSetExplicitly ? wai.BodyStyle : DefaultBodyStyle;
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}
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protected void ValidateOperation (OperationDescription operation)
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{
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var wai = operation.GetWebAttributeInfo ();
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if (wai.Method == "GET")
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return;
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var style = GetBodyStyle (wai);
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// if the style is wrapped there won't be problems
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if (style == WebMessageBodyStyle.Wrapped)
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return;
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string [] parameters;
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if (wai.UriTemplate != null) {
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// find all variables in the URI
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var uri = new UriTemplate (wai.UriTemplate);
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parameters = new string [uri.PathSegmentVariableNames.Count + uri.QueryValueVariableNames.Count];
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uri.PathSegmentVariableNames.CopyTo (parameters, 0);
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uri.QueryValueVariableNames.CopyTo (parameters, uri.PathSegmentVariableNames.Count);
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// sort because Array.BinarySearch is the easiest way for case-insensitive search
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Array.Sort (parameters, StringComparer.InvariantCultureIgnoreCase);
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} else
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parameters = new string [0];
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bool hasBody = false;
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foreach (var msg in operation.Messages) {
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if (msg.Direction == MessageDirection.Input) {
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// the message is for a request
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// if requests are wrapped there is nothing to check
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if (style == WebMessageBodyStyle.WrappedRequest)
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continue;
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foreach (var part in msg.Body.Parts) {
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if (Array.BinarySearch (parameters, part.Name, StringComparer.InvariantCultureIgnoreCase) < 0) {
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// this part of the message is not covered by a variable in the URI
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// so it must be passed in the body
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if (hasBody)
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throw new InvalidOperationException (String.Format ("Operation '{0}' has multiple message body parts. Add parameters to the UriTemplate or change the BodyStyle to 'Wrapped' or 'WrappedRequest' on the WebInvoke/WebGet attribute.", operation.Name));
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hasBody = true;
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}
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}
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} else {
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// the message is for a response
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if (style != WebMessageBodyStyle.WrappedResponse && msg.Body.Parts.Count > 0)
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throw new InvalidOperationException (String.Format ("Operation '{0}' has output parameters. BodyStyle must be 'Wrapped' or 'WrappedResponse' on the operation WebInvoke/WebGet attribute.", operation.Name));
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}
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}
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}
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[MonoTODO ("check UriTemplate validity")]
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public virtual void Validate (ServiceEndpoint endpoint)
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{
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if (endpoint == null)
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throw new ArgumentNullException ("endpoint");
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foreach (var oper in endpoint.Contract.Operations) {
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ValidateOperation (oper);
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}
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ValidateBinding (endpoint);
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}
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protected virtual void ValidateBinding (ServiceEndpoint endpoint)
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{
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switch (endpoint.Binding.Scheme) {
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case "http":
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case "https":
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break;
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default:
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throw new InvalidOperationException ("Only http and https are allowed for WebHttpBehavior");
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}
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if (!endpoint.Binding.MessageVersion.Equals (MessageVersion.None))
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throw new InvalidOperationException ("Only MessageVersion.None is allowed for WebHttpBehavior");
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if (!endpoint.Binding.CreateBindingElements ().Find<TransportBindingElement> ().ManualAddressing)
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throw new InvalidOperationException ("ManualAddressing in the transport binding element in the binding must be true for WebHttpBehavior");
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}
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#if !MOBILE
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internal class WebHttpErrorHandler : IErrorHandler
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{
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public void ProvideFault (Exception error, MessageVersion version, ref Message fault)
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{
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if (!(error is EndpointNotFoundException))
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return;
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fault = Message.CreateMessage (version, null);
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var prop = new HttpResponseMessageProperty ();
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prop.StatusCode = HttpStatusCode.NotFound;
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fault.Properties.Add (HttpResponseMessageProperty.Name, prop);
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}
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public bool HandleError (Exception error)
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{
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return false;
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}
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}
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class EndpointNotFoundOperationInvoker : IOperationInvoker
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{
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public bool IsSynchronous {
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get { return true; }
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}
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public object [] AllocateInputs ()
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{
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return new object [1];
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}
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public object Invoke (object instance, object [] inputs, out object [] outputs)
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{
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throw new EndpointNotFoundException ();
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}
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public IAsyncResult InvokeBegin (object instance, object [] inputs, AsyncCallback callback, object state)
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{
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throw new EndpointNotFoundException ();
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}
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public object InvokeEnd (object instance, out object [] outputs, IAsyncResult result)
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{
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throw new InvalidOperationException ();
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}
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}
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#endif
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}
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}
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