class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Ipc.Unix/IpcClientChannel.cs

   1 //
   2 // System.Runtime.Remoting.Channels.Ipc.Unix.IpcClientChannel.cs
   3 //
   4 // Author: Robert Jordan (robertj@gmx.net)
   5 //
   6 // Copyright (C) 2005 Novell, Inc (http://www.novell.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 #if NET_2_0
  30
  31 using System;
  32 using System.Collections;
  33 using System.IO;
  34 using System.Runtime.Remoting;
  35 using System.Runtime.Remoting.Messaging;
  36 using Win32 = System.Runtime.Remoting.Channels.Ipc.Win32;
  37
  38 namespace System.Runtime.Remoting.Channels.Ipc.Unix
  39 {
  40         internal class IpcClientChannel : IChannelSender, IChannel
  41         {
  42                 object _innerChannel;
  43
  44                 public IpcClientChannel ()
  45                 {
  46                         _innerChannel = Activator.CreateInstance(UnixChannelLoader.LoadClientChannel ());
  47                 }
  48
  49                 public IpcClientChannel (IDictionary properties,
  50                                          IClientChannelSinkProvider sinkProvider)
  51                 {
  52                         _innerChannel = Activator.CreateInstance(UnixChannelLoader.LoadClientChannel (), new object [] {properties, sinkProvider});
  53                 }
  54
  55                 public IpcClientChannel (string name,
  56                                          IClientChannelSinkProvider sinkProvider)
  57                 {
  58                         _innerChannel = Activator.CreateInstance(UnixChannelLoader.LoadClientChannel (), new object [] {name, sinkProvider});
  59                 }
  60
  61                 public string ChannelName
  62                 {
  63                         get { return ((IChannel)_innerChannel).ChannelName; }
  64                 }
  65
  66                 public int ChannelPriority
  67                 {
  68                         get { return ((IChannel)_innerChannel).ChannelPriority; }
  69                 }
  70
  71                 public string Parse (string url, out string objectUri)
  72                 {
  73                         return Win32.IpcChannelHelper.Parse (url, out objectUri);
  74                 }
  75
  76
  77                 //
  78                 // Converts an ipc URL to a unix URL.
  79                 // Returns the URL unchanged if it was not ipc.
  80                 //
  81                 internal static string IpcToUnix (string url)
  82                 {
  83                         if (url == null)
  84                                 return null;
  85
  86                         string portName;
  87                         string objectUri;
  88                         Win32.IpcChannelHelper.Parse (url, out portName, out objectUri);
  89                         if (objectUri != null)
  90                                 url = "unix://" + Path.Combine (Path.GetTempPath (), portName) + "?" + objectUri;
  91                         return url;
  92                 }
  93
  94                 public IMessageSink CreateMessageSink(string url,
  95                                                       object remoteChannelData,
  96                                                       out string objectUri)
  97                 {
  98                         url = IpcToUnix (url);
  99                         IMessageSink sink = ((IChannelSender)_innerChannel).CreateMessageSink (url, remoteChannelData, out objectUri);
 100
 101                         if (sink != null)
 102                                 return new UrlMapperSink (sink);
 103                         else
 104                                 return null;
 105                 }
 106         }
 107
 108
 109         //
 110         // Simple message sink that changes ipc URLs to unix URLs.
 111         //
 112         sealed class UrlMapperSink : IMessageSink
 113         {
 114                 readonly IMessageSink _sink;
 115
 116                 public UrlMapperSink (IMessageSink sink)
 117                 {
 118                         _sink = sink;
 119                 }
 120
 121                 public IMessageSink NextSink
 122                 {
 123                         get { return _sink.NextSink; }
 124                 }
 125
 126                 static void ChangeUri (IMessage msg)
 127                 {
 128                         string uri = msg.Properties ["__Uri"] as string;
 129                         if (uri != null) {
 130                                  msg.Properties ["__Uri"] = IpcClientChannel.IpcToUnix (uri);
 131                         }
 132                 }
 133
 134                 public IMessage SyncProcessMessage(IMessage msg)
 135                 {
 136                         ChangeUri (msg);
 137                         return _sink.SyncProcessMessage (msg);
 138                 }
 139
 140                 public IMessageCtrl AsyncProcessMessage(IMessage msg,
 141                                                         IMessageSink replySink)
 142                 {
 143                         ChangeUri (msg);
 144                         return _sink.AsyncProcessMessage (msg, replySink);
 145                 }
 146
 147         }
 148 }
 149
 150 #endif