mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Simple/SimpleWireFormat.cs

   1 // System.Runtime.Remoting.Channels.Simple.SimpleWireFormat.cs
   2 //
   3 // Author:
   4 //      DietmarMaurer (dietmar@ximian.com)
   5 //
   6 // (C) 2002 Ximian, Inc.  http://www.ximian.com
   7
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Runtime.Serialization.Formatters;
  30 using System.Runtime.Serialization;
  31 using System.Reflection;
  32 using System.Collections;
  33 using System.IO;
  34 using System.Runtime.Remoting.Messaging;
  35
  36 namespace System.Runtime.Remoting.Channels.Simple {
  37
  38         public sealed class SimpleWireFormat
  39         {
  40                 enum TypeId : byte {
  41                         Boolean,
  42                         Byte,
  43                         Char,
  44                         Decimal,
  45                         Double,
  46                         Int16,
  47                         Int32,
  48                         Int64,
  49                         SByte,
  50                         String,
  51                         Single,
  52                         UInt16,
  53                         UInt32,
  54                         UInt64,
  55                         NULL
  56                 }
  57
  58                 public SimpleWireFormat ()
  59                 {
  60                 }
  61
  62                 void SerializeObject (BinaryWriter writer, object obj)
  63                 {
  64                         if (obj == null) {
  65                                 writer.Write ((byte)TypeId.NULL);
  66                                 return;
  67                         }
  68
  69                         Type type = obj.GetType ();
  70
  71                         if (type == typeof (String))
  72                         {
  73                                 writer.Write ((byte)TypeId.String);
  74                                 writer.Write ((String)obj);
  75                                 return;
  76                         }
  77
  78                         if (type == typeof (int)) {
  79                                 writer.Write ((byte)TypeId.Int32);
  80                                 writer.Write ((int)obj);
  81                                 return;
  82                         }
  83
  84                         if (type == typeof (long)) {
  85                                 writer.Write ((byte)TypeId.Int64);
  86                                 writer.Write ((long)obj);
  87                                 return;
  88                         }
  89
  90                         if (type == typeof (uint)) {
  91                                 writer.Write ((byte)TypeId.UInt32);
  92                                 writer.Write ((uint)obj);
  93                                 return;
  94                         }
  95
  96                         if (type == typeof (ulong)) {
  97                                 writer.Write ((byte)TypeId.UInt64);
  98                                 writer.Write ((ulong)obj);
  99                                 return;
 100                         }
 101
 102                         if (type == typeof (bool)) {
 103                                 writer.Write ((byte)TypeId.Boolean);
 104                                 writer.Write ((bool)obj);
 105                                 return;
 106                         }
 107
 108                         if (type == typeof (byte)) {
 109                                 writer.Write ((byte)TypeId.Byte);
 110                                 writer.Write ((byte)obj);
 111                                 return;
 112                         }
 113
 114                         if (type == typeof (sbyte)) {
 115                                 writer.Write ((byte)TypeId.SByte);
 116                                 writer.Write ((sbyte)obj);
 117                                 return;
 118                         }
 119
 120                         if (type == typeof (char)) {
 121                                 writer.Write ((byte)TypeId.Char);
 122                                 writer.Write ((char)obj);
 123                                 return;
 124                         }
 125
 126                         if (type == typeof (double)) {
 127                                 writer.Write ((byte)TypeId.Double);
 128                                 writer.Write ((double)obj);
 129                                 return;
 130                         }
 131
 132                         if (type == typeof (Single)) {
 133                                 writer.Write ((byte)TypeId.Single);
 134                                 writer.Write ((Single)obj);
 135                                 return;
 136                         }
 137
 138                         if (type == typeof (Int16)) {
 139                                 writer.Write ((byte)TypeId.Int16);
 140                                 writer.Write ((Int16)obj);
 141                                 return;
 142                         }
 143
 144                         if (type == typeof (UInt16)) {
 145                                 writer.Write ((byte)TypeId.UInt16);
 146                                 writer.Write ((UInt16)obj);
 147                                 return;
 148                         }
 149
 150                         if (type == typeof (Decimal)) {
 151                                 writer.Write ((byte)TypeId.Decimal);
 152                                 writer.Write ((Decimal)obj);
 153                                 return;
 154                         }
 155
 156                         throw new NotSupportedException ();
 157                 }
 158
 159                 object DeserializeObject (BinaryReader reader)
 160                 {
 161                         TypeId tid = (TypeId)reader.ReadByte ();
 162
 163                         if (tid == TypeId.NULL)
 164                                 return null;
 165
 166                         if (tid == TypeId.String) {
 167                                 return reader.ReadString ();
 168                         }
 169
 170                         if (tid == TypeId.Int32) {
 171                                 return reader.ReadInt32 ();
 172                         }
 173
 174                         if (tid == TypeId.Int64) {
 175                                 return reader.ReadInt64 ();
 176                         }
 177
 178                         if (tid == TypeId.UInt32) {
 179                                 return reader.ReadUInt32 ();
 180                         }
 181
 182                         if (tid == TypeId.UInt64) {
 183                                 return reader.ReadUInt64 ();
 184                         }
 185
 186                         if (tid == TypeId.Boolean) {
 187                                 return reader.ReadBoolean ();
 188                         }
 189
 190                         if (tid == TypeId.Byte) {
 191                                 return reader.ReadByte ();
 192                         }
 193
 194                         if (tid == TypeId.SByte) {
 195                                 return reader.ReadSByte ();
 196                         }
 197
 198                         if (tid == TypeId.Char) {
 199                                 return reader.ReadChar ();
 200                         }
 201
 202                         if (tid == TypeId.Double) {
 203                                 return reader.ReadDouble ();
 204                         }
 205
 206                         if (tid == TypeId.Single) {
 207                                 return reader.ReadSingle ();
 208                         }
 209
 210                         if (tid == TypeId.Byte) {
 211                                 return reader.ReadByte ();
 212                         }
 213
 214                         if (tid == TypeId.Int16) {
 215                                 return reader.ReadInt16 ();
 216                         }
 217
 218                         if (tid == TypeId.UInt16) {
 219                                 return reader.ReadUInt16 ();
 220                         }
 221
 222                         if (tid == TypeId.Decimal) {
 223                                 return reader.ReadDecimal ();
 224                         }
 225
 226                         throw new NotSupportedException ();
 227                 }
 228
 229                 public IMethodCallMessage DeserializeRequest (Stream serializationStream, string uri)
 230                 {
 231                         if (serializationStream == null) {
 232                                 throw new ArgumentNullException ("serializationStream is null");
 233                         }
 234
 235                         Type svr_type = RemotingServices.GetServerTypeForUri (uri);
 236                         if (svr_type == null)
 237                                 throw new RemotingException ("no registered server for uri " + uri);
 238
 239                         BinaryReader reader = new BinaryReader (serializationStream);
 240
 241                         string method_name = reader.ReadString ();
 242                         int arg_count = reader.ReadInt32 ();
 243
 244                         object [] args = new object [arg_count];
 245                         for (int i = 0; i < arg_count; i++) {
 246                                 args [i] = DeserializeObject (reader);
 247                         }
 248
 249                         MonoMethodMessage msg = new MonoMethodMessage (svr_type, method_name, args);
 250                         msg.Uri = uri;
 251
 252                         return msg;
 253                 }
 254
 255                 public IMethodReturnMessage DeserializeResponse (Stream serializationStream,
 256                                                                  IMethodCallMessage request)
 257                 {
 258
 259                         BinaryReader reader = new BinaryReader (serializationStream);
 260
 261                         object return_value = DeserializeObject (reader);
 262
 263                         int arg_count = reader.ReadInt32 ();
 264                         object [] out_args = new object [arg_count];
 265                         for (int i = 0; i < arg_count; i++)
 266                                 out_args [i] = DeserializeObject (reader);
 267
 268                         return new ReturnMessage (return_value, out_args, arg_count, null, request);
 269                 }
 270
 271                 public void SerializeRequest (Stream serializationStream, object graph)
 272                 {
 273                         if (serializationStream == null) {
 274                                 throw new ArgumentNullException ("serializationStream is null");
 275                         }
 276
 277                         BinaryWriter writer = new BinaryWriter (serializationStream);
 278
 279                         IMethodCallMessage msg = graph as IMethodCallMessage;
 280                         if (msg != null) {
 281                                 writer.Write (msg.MethodName);
 282                                 writer.Write ((int)msg.InArgCount);
 283                                 for (int i = 0; i < msg.InArgCount; i++)
 284                                         SerializeObject (writer, msg.GetInArg (i));
 285                                 return;
 286                         }
 287
 288                         throw new NotSupportedException ();
 289                 }
 290
 291                 public void SerializeResponse (Stream serializationStream, object graph)
 292                 {
 293                         if (serializationStream == null) {
 294                                 throw new ArgumentNullException ("serializationStream is null");
 295                         }
 296
 297                         BinaryWriter writer = new BinaryWriter (serializationStream);
 298
 299                         IMethodReturnMessage res = graph as IMethodReturnMessage;
 300                         if (res != null) {
 301
 302                                 // this channel does not support serialization of exception,
 303                                 // so we simply let the transport decide what to do
 304                                 if (res.Exception != null)
 305                                         return;
 306
 307                                 SerializeObject (writer, res.ReturnValue);
 308                                 writer.Write (res.OutArgCount);
 309
 310                                 for (int i = 0; i < res.OutArgCount; i++)
 311                                         SerializeObject (writer, res.GetOutArg (i));
 312
 313                                 return;
 314                         }
 315
 316                         throw new NotSupportedException ();
 317                 }
 318         }
 319 }