mcs/class/System.Web.Services/System.Web.Services.Description/HttpSimpleProtocolImporter.cs

   1 //
   2 // System.Web.Services.Description.HttpSimpleProtocolImporter.cs
   3 //
   4 // Author:
   5 //   Lluis Sanchez Gual (lluis@ximian.com)
   6 //
   7 // Copyright (C) 2003 Ximian, Inc.
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.CodeDom;
  32 using System.Web.Services;
  33 using System.Web.Services.Protocols;
  34 using System.Web.Services.Configuration;
  35 using System.Xml;
  36 using System.Xml.Serialization;
  37 using System.Configuration;
  38 using System.Collections;
  39
  40 namespace System.Web.Services.Description
  41 {
  42         internal abstract class HttpSimpleProtocolImporter : ProtocolImporter
  43         {
  44
  45                 #region Fields
  46
  47                 HttpBinding httpBinding;
  48
  49                 SoapCodeExporter soapExporter;
  50                 SoapSchemaImporter soapImporter;
  51                 XmlCodeExporter xmlExporter;
  52                 XmlSchemaImporter xmlImporter;
  53                 CodeIdentifiers memberIds;
  54                 XmlReflectionImporter xmlReflectionImporter;
  55
  56                 #endregion // Fields
  57
  58                 #region Constructors
  59
  60                 public HttpSimpleProtocolImporter ()
  61                 {
  62                 }
  63
  64                 #endregion // Constructors
  65
  66                 #region Methods
  67
  68                 protected override CodeTypeDeclaration BeginClass ()
  69                 {
  70                         httpBinding = (HttpBinding) Binding.Extensions.Find (typeof(HttpBinding));
  71
  72                         CodeTypeDeclaration codeClass = new CodeTypeDeclaration (ClassName);
  73
  74                         string location = null;
  75                         if (Port != null) {
  76                                 HttpAddressBinding sab = (HttpAddressBinding) Port.Extensions.Find (typeof(HttpAddressBinding));
  77                                 if (sab != null) location = sab.Location;
  78                         }
  79
  80                         CodeConstructor cc = new CodeConstructor ();
  81                         cc.Attributes = MemberAttributes.Public;
  82                         GenerateServiceUrl (location, cc.Statements);
  83                         codeClass.Members.Add (cc);
  84
  85                         memberIds = new CodeIdentifiers ();
  86                         return codeClass;
  87                 }
  88
  89                 protected override void BeginNamespace ()
  90                 {
  91                         xmlImporter = new XmlSchemaImporter (LiteralSchemas, ClassNames);
  92                         soapImporter = new SoapSchemaImporter (EncodedSchemas, ClassNames);
  93                         xmlExporter = new XmlCodeExporter (CodeNamespace, null);
  94                         xmlReflectionImporter = new XmlReflectionImporter ();
  95                 }
  96
  97                 protected override void EndClass ()
  98                 {
  99                         if (xmlExporter.IncludeMetadata.Count > 0)
 100                         {
 101                                 if (CodeTypeDeclaration.CustomAttributes == null)
 102                                         CodeTypeDeclaration.CustomAttributes = new CodeAttributeDeclarationCollection ();
 103                                 CodeTypeDeclaration.CustomAttributes.AddRange (xmlExporter.IncludeMetadata);
 104                         }
 105                 }
 106
 107                 protected override void EndNamespace ()
 108                 {
 109                 }
 110
 111                 protected override bool IsBindingSupported ()
 112                 {
 113                         throw new NotImplementedException ();
 114                 }
 115
 116                 [MonoTODO]
 117                 protected override bool IsOperationFlowSupported (OperationFlow flow)
 118                 {
 119                         throw new NotImplementedException ();
 120                 }
 121
 122                 protected override CodeMemberMethod GenerateMethod ()
 123                 {
 124                         try
 125                         {
 126                                 HttpOperationBinding httpOper = OperationBinding.Extensions.Find (typeof (HttpOperationBinding)) as HttpOperationBinding;
 127                                 if (httpOper == null) throw new Exception ("Http operation binding not found");
 128
 129                                 XmlMembersMapping inputMembers = ImportInMembersMapping (InputMessage);
 130                                 XmlTypeMapping outputMember = ImportOutMembersMapping (OutputMessage);
 131
 132                                 CodeMemberMethod met = GenerateMethod (memberIds, httpOper, inputMembers, outputMember);
 133
 134                                 xmlExporter.ExportMembersMapping (inputMembers);
 135                                 if (outputMember != null)
 136                                         xmlExporter.ExportTypeMapping (outputMember);
 137
 138                                 return met;
 139                         }
 140                         catch (Exception ex)
 141                         {
 142                                 UnsupportedOperationBindingWarning (ex.Message);
 143                                 return null;
 144                         }
 145                 }
 146
 147                 XmlMembersMapping ImportInMembersMapping (Message msg)
 148                 {
 149                         SoapSchemaMember[] mems = new SoapSchemaMember [msg.Parts.Count];
 150                         for (int n=0; n<mems.Length; n++)
 151                         {
 152                                 SoapSchemaMember mem = new SoapSchemaMember();
 153                                 mem.MemberName = msg.Parts[n].Name;
 154                                 mem.MemberType = msg.Parts[n].Type;
 155                                 mems[n] = mem;
 156                         }
 157                         return soapImporter.ImportMembersMapping (Operation.Name, "", mems);
 158                 }
 159
 160                 XmlTypeMapping ImportOutMembersMapping (Message msg)
 161                 {
 162                         if (msg.Parts.Count == 0) return null;
 163
 164                         if (msg.Parts[0].Name == "Body" && msg.Parts[0].Element == XmlQualifiedName.Empty)
 165                                 return xmlReflectionImporter.ImportTypeMapping (typeof(XmlNode));
 166                         else {
 167                                 // This is a bit hacky. The issue is that types such as string[] are to be imported
 168                                 // as such, not as ArrayOfString class. ImportTypeMapping will return a
 169                                 // class if the type has not been imported as an array before, hence the
 170                                 // call to ImportMembersMapping.
 171                                 xmlImporter.ImportMembersMapping (new XmlQualifiedName[] {msg.Parts[0].Element});
 172                                 return xmlImporter.ImportTypeMapping (msg.Parts[0].Element);
 173                         }
 174                 }
 175
 176                 CodeMemberMethod GenerateMethod (CodeIdentifiers memberIds, HttpOperationBinding httpOper, XmlMembersMapping inputMembers, XmlTypeMapping outputMember)
 177                 {
 178                         CodeIdentifiers pids = new CodeIdentifiers ();
 179                         CodeMemberMethod method = new CodeMemberMethod ();
 180                         CodeMemberMethod methodBegin = new CodeMemberMethod ();
 181                         CodeMemberMethod methodEnd = new CodeMemberMethod ();
 182                         method.Attributes = MemberAttributes.Public;
 183                         methodBegin.Attributes = MemberAttributes.Public;
 184                         methodEnd.Attributes = MemberAttributes.Public;
 185
 186                         // Find unique names for temporary variables
 187
 188                         for (int n=0; n<inputMembers.Count; n++)
 189                                 pids.AddUnique (inputMembers[n].MemberName, inputMembers[n]);
 190
 191                         string varAsyncResult = pids.AddUnique ("asyncResult","asyncResult");
 192                         string varResults = pids.AddUnique ("results","results");
 193                         string varCallback = pids.AddUnique ("callback","callback");
 194                         string varAsyncState = pids.AddUnique ("asyncState","asyncState");
 195
 196                         string messageName = memberIds.AddUnique(CodeIdentifier.MakeValid(Operation.Name),method);
 197
 198                         method.Name = Operation.Name;
 199                         methodBegin.Name = memberIds.AddUnique(CodeIdentifier.MakeValid("Begin" + Operation.Name),method);
 200                         methodEnd.Name = memberIds.AddUnique(CodeIdentifier.MakeValid("End" + Operation.Name),method);
 201
 202                         method.ReturnType = new CodeTypeReference (typeof(void));
 203                         methodEnd.ReturnType = new CodeTypeReference (typeof(void));
 204                         methodEnd.Parameters.Add (new CodeParameterDeclarationExpression (typeof (IAsyncResult),varAsyncResult));
 205
 206                         CodeExpression[] paramArray = new CodeExpression [inputMembers.Count];
 207
 208                         for (int n=0; n<inputMembers.Count; n++)
 209                         {
 210                                 string ptype = GetSimpleType (inputMembers[n]);
 211                                 CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression (ptype, inputMembers[n].MemberName);
 212
 213                                 param.Direction = FieldDirection.In;
 214                                 method.Parameters.Add (param);
 215                                 methodBegin.Parameters.Add (param);
 216                                 paramArray [n] = new CodeVariableReferenceExpression (param.Name);
 217                         }
 218
 219                         bool isVoid = true;
 220                         if (outputMember != null)
 221                         {
 222                                 method.ReturnType = new CodeTypeReference (outputMember.TypeFullName);
 223                                 methodEnd.ReturnType = new CodeTypeReference (outputMember.TypeFullName);
 224                                 xmlExporter.AddMappingMetadata (method.ReturnTypeCustomAttributes, outputMember, "");
 225                                 isVoid = false;
 226                         }
 227
 228                         methodBegin.Parameters.Add (new CodeParameterDeclarationExpression (typeof (AsyncCallback),varCallback));
 229                         methodBegin.Parameters.Add (new CodeParameterDeclarationExpression (typeof (object),varAsyncState));
 230                         methodBegin.ReturnType = new CodeTypeReference (typeof(IAsyncResult));
 231
 232                         // Array of input parameters
 233
 234                         CodeArrayCreateExpression methodParams;
 235                         if (paramArray.Length > 0)
 236                                 methodParams = new CodeArrayCreateExpression (typeof(object), paramArray);
 237                         else
 238                                 methodParams = new CodeArrayCreateExpression (typeof(object), 0);
 239
 240                         // Generate method url
 241
 242                         CodeThisReferenceExpression ethis = new CodeThisReferenceExpression();
 243
 244                         CodeExpression thisURlExp = new CodeFieldReferenceExpression (ethis, "Url");
 245                         CodePrimitiveExpression metUrl = new CodePrimitiveExpression (httpOper.Location);
 246                         CodeBinaryOperatorExpression expMethodLocation = new CodeBinaryOperatorExpression (thisURlExp, CodeBinaryOperatorType.Add, metUrl);
 247
 248                         // Invoke call
 249
 250                         CodePrimitiveExpression varMsgName = new CodePrimitiveExpression (messageName);
 251                         CodeMethodInvokeExpression inv;
 252
 253                         inv = new CodeMethodInvokeExpression (ethis, "Invoke", varMsgName, expMethodLocation, methodParams);
 254                         if (!isVoid)
 255                                 method.Statements.Add (new CodeMethodReturnStatement (new CodeCastExpression (method.ReturnType, inv)));
 256                         else
 257                                 method.Statements.Add (inv);
 258
 259                         // Begin Invoke Call
 260
 261                         CodeExpression expCallb = new CodeVariableReferenceExpression (varCallback);
 262                         CodeExpression expAsyncs = new CodeVariableReferenceExpression (varAsyncState);
 263                         inv = new CodeMethodInvokeExpression (ethis, "BeginInvoke", varMsgName, expMethodLocation, methodParams, expCallb, expAsyncs);
 264                         methodBegin.Statements.Add (new CodeMethodReturnStatement (inv));
 265
 266                         // End Invoke call
 267
 268                         CodeExpression varAsyncr = new CodeVariableReferenceExpression (varAsyncResult);
 269                         inv = new CodeMethodInvokeExpression (ethis, "EndInvoke", varAsyncr);
 270                         if (!isVoid)
 271                                 methodEnd.Statements.Add (new CodeMethodReturnStatement (new CodeCastExpression (methodEnd.ReturnType, inv)));
 272                         else
 273                                 methodEnd.Statements.Add (inv);
 274
 275                         // Attributes
 276
 277                         CodeAttributeDeclaration att = new CodeAttributeDeclaration ("System.Web.Services.Protocols.HttpMethodAttribute");
 278                         att.Arguments.Add (new CodeAttributeArgument (new CodeTypeOfExpression(GetOutMimeFormatter ())));
 279                         att.Arguments.Add (new CodeAttributeArgument (new CodeTypeOfExpression(GetInMimeFormatter ())));
 280                         AddCustomAttribute (method, att, true);
 281
 282                         CodeTypeDeclaration.Members.Add (method);
 283                         CodeTypeDeclaration.Members.Add (methodBegin);
 284                         CodeTypeDeclaration.Members.Add (methodEnd);
 285
 286                         return method;
 287                 }
 288
 289 #if NET_2_0
 290                 internal override CodeExpression BuildInvokeAsync (string messageName, CodeArrayCreateExpression paramsArray, CodeExpression delegateField, CodeExpression userStateVar)
 291                 {
 292                         HttpOperationBinding httpOper = OperationBinding.Extensions.Find (typeof (HttpOperationBinding)) as HttpOperationBinding;
 293
 294                         CodeThisReferenceExpression ethis = new CodeThisReferenceExpression();
 295
 296                         CodeExpression thisURlExp = new CodeFieldReferenceExpression (ethis, "Url");
 297                         CodePrimitiveExpression metUrl = new CodePrimitiveExpression (httpOper.Location);
 298                         CodeBinaryOperatorExpression expMethodLocation = new CodeBinaryOperatorExpression (thisURlExp, CodeBinaryOperatorType.Add, metUrl);
 299
 300                         CodeMethodInvokeExpression inv2 = new CodeMethodInvokeExpression (ethis, "InvokeAsync");
 301                         inv2.Parameters.Add (new CodePrimitiveExpression (messageName));
 302                         inv2.Parameters.Add (expMethodLocation);
 303                         inv2.Parameters.Add (paramsArray);
 304                         inv2.Parameters.Add (delegateField);
 305                         inv2.Parameters.Add (userStateVar);
 306                         return inv2;
 307                 }
 308 #endif
 309
 310                 protected virtual Type GetInMimeFormatter ()
 311                 {
 312                         return null;
 313                 }
 314
 315                 protected virtual Type GetOutMimeFormatter ()
 316                 {
 317                         if (OperationBinding.Output.Extensions.Find (typeof(MimeXmlBinding)) != null)
 318                                 return typeof (XmlReturnReader);
 319
 320                         MimeContentBinding bin = (MimeContentBinding) OperationBinding.Output.Extensions.Find (typeof(MimeContentBinding));
 321                         if (bin != null && bin.Type == "text/xml")
 322                                 return typeof (XmlReturnReader);
 323
 324                         return typeof(NopReturnReader);
 325                 }
 326
 327                 string GetSimpleType (XmlMemberMapping member)
 328                 {
 329                         // MS seems to always use System.String for input parameters, except for byte[]
 330
 331                         switch (member.TypeName)
 332                         {
 333                                 case "hexBinary":
 334                                 case "base64Binary":
 335                                         return "System.String";
 336
 337                                 default:
 338                                         string ptype = member.TypeFullName;
 339                                         int i = ptype.IndexOf ('[');
 340                                         if (i == -1)
 341                                                 return "System.String";
 342                                         else
 343                                                 return "System.String" + ptype.Substring (i);
 344                         }
 345                 }
 346
 347                 #endregion
 348         }
 349 }