class/Mono.Posix/Mono.Remoting.Channels.Unix/UnixBinaryCore.cs

   1 //
   2 // Mono.Remoting.Channels.Unix.BinaryCore.cs
   3 //
   4 // Author: Lluis Sanchez Gual (lluis@novell.com)
   5 //
   6 // 2005 (C) Copyright, Novell, Inc.
   7 //
   8
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Reflection;
  32 using System.Collections;
  33 using System.Runtime.Remoting;
  34 using System.Runtime.Remoting.Messaging;
  35 using System.Runtime.Serialization;
  36 using System.Runtime.Serialization.Formatters;
  37 using System.Runtime.Serialization.Formatters.Binary;
  38
  39 namespace Mono.Remoting.Channels.Unix
  40 {
  41         internal class UnixBinaryCore
  42         {
  43                 BinaryFormatter _serializationFormatter;
  44                 BinaryFormatter _deserializationFormatter;
  45                 bool _includeVersions = true;
  46                 bool _strictBinding = false;
  47                 IDictionary _properties;
  48
  49                 public static UnixBinaryCore DefaultInstance = new UnixBinaryCore ();
  50
  51                 public UnixBinaryCore (object owner, IDictionary properties, string[] allowedProperties)
  52                 {
  53                         _properties = properties;
  54
  55                         foreach(DictionaryEntry property in properties)
  56                         {
  57                                 string key = (string) property.Key;
  58                                 if (Array.IndexOf (allowedProperties, key) == -1)
  59                                         throw new RemotingException (owner.GetType().Name + " does not recognize '" + key + "' configuration property");
  60
  61                                 switch (key)
  62                                 {
  63                                         case "includeVersions":
  64                                                 _includeVersions = Convert.ToBoolean (property.Value);
  65                                                 break;
  66
  67                                         case "strictBinding":
  68                                                 _strictBinding = Convert.ToBoolean (property.Value);
  69                                                 break;
  70                                 }
  71                         }
  72
  73                         Init ();
  74                 }
  75
  76                 public UnixBinaryCore ()
  77                 {
  78                         _properties = new Hashtable ();
  79                         Init ();
  80                 }
  81
  82                 public void Init ()
  83                 {
  84                         RemotingSurrogateSelector surrogateSelector = new RemotingSurrogateSelector ();
  85                         StreamingContext context = new StreamingContext (StreamingContextStates.Remoting, null);
  86
  87                         _serializationFormatter = new BinaryFormatter (surrogateSelector, context);
  88                         _deserializationFormatter = new BinaryFormatter (null, context);
  89
  90                         if (!_includeVersions)
  91                         {
  92                                 _serializationFormatter.AssemblyFormat = FormatterAssemblyStyle.Simple;
  93                                 _deserializationFormatter.AssemblyFormat = FormatterAssemblyStyle.Simple;
  94                         }
  95
  96                         if (!_strictBinding)
  97                         {
  98                                 _serializationFormatter.Binder = SimpleBinder.Instance;
  99                                 _deserializationFormatter.Binder = SimpleBinder.Instance;
 100                         }
 101                 }
 102
 103                 public BinaryFormatter Serializer
 104                 {
 105                         get { return _serializationFormatter; }
 106                 }
 107
 108                 public BinaryFormatter Deserializer
 109                 {
 110                         get { return _deserializationFormatter; }
 111                 }
 112
 113                 public IDictionary Properties
 114                 {
 115                         get { return _properties; }
 116                 }
 117         }
 118
 119
 120         internal class SimpleBinder: SerializationBinder
 121         {
 122                 public static SimpleBinder Instance = new SimpleBinder ();
 123
 124                 public override Type BindToType (String assemblyName, string typeName)
 125                 {
 126                         Assembly asm;
 127
 128                         if (assemblyName.IndexOf (',') != -1)
 129                         {
 130                                 // Try using the full name
 131                                 try
 132                                 {
 133                                         asm = Assembly.Load (assemblyName);
 134                                         if (asm == null) return null;
 135                                         Type t = asm.GetType (typeName);
 136                                         if (t != null) return t;
 137                                 }
 138                                 catch {}
 139                         }
 140
 141                         // Try using the simple name
 142                         asm = Assembly.LoadWithPartialName (assemblyName);
 143                         if (asm == null) return null;
 144                         return asm.GetType (typeName, true);
 145                 }
 146         }
 147 }
 148