2 // System.Runtime.Remoting.Messaging.MethodCall.cs
4 // Author: Duncan Mak (duncan@ximian.com)
5 // Lluis Sanchez Gual (lluis@ideary.com)
7 // 2002 (C) Copyright, Ximian, Inc.
11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.Collections;
35 using System.Reflection;
36 using System.Runtime.Serialization;
38 namespace System.Runtime.Remoting.Messaging {
40 [Serializable] [CLSCompliant (false)]
41 public class MethodCall : IMethodCallMessage, IMethodMessage, IMessage, ISerializable, IInternalMessage, ISerializationRootObject
47 Type[] _methodSignature;
48 MethodBase _methodBase;
49 LogicalCallContext _callContext;
51 Identity _targetIdentity;
53 protected IDictionary ExternalProperties;
54 protected IDictionary InternalProperties;
56 public MethodCall (Header [] headers)
60 if (headers == null || headers.Length == 0) return;
62 foreach (Header header in headers)
63 InitMethodProperty (header.Name, header.Value);
68 internal MethodCall (SerializationInfo info, StreamingContext context)
72 foreach (SerializationEntry entry in info)
73 InitMethodProperty ((string)entry.Name, entry.Value);
76 internal MethodCall (CADMethodCallMessage msg)
78 _uri = string.Copy (msg.Uri);
80 // Get unmarshalled arguments
81 ArrayList args = msg.GetArguments ();
83 _args = msg.GetArgs (args);
84 _callContext = msg.GetLogicalCallContext (args);
85 if (_callContext == null)
86 _callContext = new LogicalCallContext ();
88 _methodBase = MethodBase.GetMethodFromHandle (msg.MethodHandle);
91 if (msg.PropertiesCount > 0)
92 CADMessageBase.UnmarshalProperties (Properties, msg.PropertiesCount, args);
95 public MethodCall (IMessage msg)
97 if (msg is IMethodMessage)
98 CopyFrom ((IMethodMessage) msg);
101 foreach (DictionaryEntry entry in msg.Properties)
102 InitMethodProperty ((String) entry.Key, entry.Value);
107 internal MethodCall (string uri, string typeName, string methodName, object[] args)
110 _typeName = typeName;
111 _methodName = methodName;
118 internal MethodCall ()
122 internal void CopyFrom (IMethodMessage call)
125 _typeName = call.TypeName;
126 _methodName = call.MethodName;
128 _methodSignature = (Type[]) call.MethodSignature;
129 _methodBase = call.MethodBase;
130 _callContext = call.LogicalCallContext;
135 internal virtual void InitMethodProperty(string key, object value)
139 case "__TypeName" : _typeName = (string) value; return;
140 case "__MethodName" : _methodName = (string) value; return;
141 case "__MethodSignature" : _methodSignature = (Type[]) value; return;
142 case "__Args" : _args = (object[]) value; return;
143 case "__CallContext" : _callContext = (LogicalCallContext) value; return;
144 case "__Uri" : _uri = (string) value; return;
145 default: Properties[key] = value; return;
149 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
151 info.AddValue ("__TypeName", _typeName);
152 info.AddValue ("__MethodName", _methodName);
153 info.AddValue ("__MethodSignature", _methodSignature);
154 info.AddValue ("__Args", _args);
155 info.AddValue ("__CallContext", _callContext);
156 info.AddValue ("__Uri", _uri);
158 if (InternalProperties != null) {
159 foreach (DictionaryEntry entry in InternalProperties)
160 info.AddValue ((string) entry.Key, entry.Value);
164 public int ArgCount {
165 get { return _args.Length; }
168 public object[] Args {
169 get { return _args; }
172 public bool HasVarArgs {
173 get { return (MethodBase.CallingConvention | CallingConventions.VarArgs) != 0; }
176 public int InArgCount
180 if (_inArgInfo == null) _inArgInfo = new ArgInfo (_methodBase, ArgInfoType.In);
181 return _inArgInfo.GetInOutArgCount();
185 public object[] InArgs
189 if (_inArgInfo == null) _inArgInfo = new ArgInfo (_methodBase, ArgInfoType.In);
190 return _inArgInfo.GetInOutArgs (_args);
194 public LogicalCallContext LogicalCallContext {
195 get { return _callContext; }
198 public MethodBase MethodBase {
200 if (_methodBase == null)
207 public string MethodName {
209 // lazily fill in _methodName from _methodBase
210 if (_methodName == null)
211 _methodName = _methodBase.Name;
216 public object MethodSignature {
218 if (_methodSignature == null && _methodBase != null)
220 ParameterInfo[] parameters = _methodBase.GetParameters();
221 _methodSignature = new Type[parameters.Length];
222 for (int n=0; n<parameters.Length; n++)
223 _methodSignature[n] = parameters[n].ParameterType;
225 return _methodSignature;
229 public virtual IDictionary Properties {
232 if (ExternalProperties == null) InitDictionary ();
233 return ExternalProperties;
237 internal virtual void InitDictionary()
239 MethodCallDictionary props = new MethodCallDictionary (this);
240 ExternalProperties = props;
241 InternalProperties = props.GetInternalProperties();
244 public string TypeName
247 // lazily fill in _typeName from _methodBase
248 if (_typeName == null)
249 _typeName = _methodBase.DeclaringType.AssemblyQualifiedName;
256 set { _uri = value; }
259 public object GetArg (int argNum)
261 return _args[argNum];
264 public string GetArgName (int index)
266 return _methodBase.GetParameters()[index].Name;
269 public object GetInArg (int argNum)
271 if (_inArgInfo == null) _inArgInfo = new ArgInfo (_methodBase, ArgInfoType.In);
272 return _args[_inArgInfo.GetInOutArgIndex (argNum)];
275 public string GetInArgName (int index)
277 if (_inArgInfo == null) _inArgInfo = new ArgInfo (_methodBase, ArgInfoType.In);
278 return _inArgInfo.GetInOutArgName(index);
282 public virtual object HeaderHandler (Header[] h)
284 throw new NotImplementedException ();
287 public virtual void Init ()
291 public void ResolveMethod ()
295 Type type = RemotingServices.GetServerTypeForUri (_uri);
296 if (type == null) throw new RemotingException ("Requested service not found. No receiver for uri " + _uri);
298 if (CanCastTo (_typeName, type)) {
299 _methodBase = RemotingServices.GetMethodBaseFromName (type, _methodName, _methodSignature);
303 throw new RemotingException ("Cannot cast from client type '" + _typeName + "' to server type '" + type.FullName + "'");
305 _methodBase = RemotingServices.GetMethodBaseFromMethodMessage (this);
308 bool CanCastTo (string clientType, Type serverType)
310 int i = clientType.IndexOf(',');
311 if (i != -1) clientType = clientType.Substring (0,i).Trim();
313 if (clientType == serverType.FullName) return true;
315 // base class hierarchy
317 Type baseType = serverType.BaseType;
318 while (baseType != null) {
319 if (clientType == baseType.FullName) return true;
320 baseType = baseType.BaseType;
323 // Implemented interfaces
325 Type[] interfaces = serverType.GetInterfaces();
326 foreach (Type itype in interfaces)
327 if (clientType == itype.FullName) return true;
333 public void RootSetObjectData (SerializationInfo info, StreamingContext context)
335 throw new NotImplementedException ();
338 Identity IInternalMessage.TargetIdentity
340 get { return _targetIdentity; }
341 set { _targetIdentity = value; }
344 public override string ToString ()
346 string s = _typeName.Split(',')[0] + "." + _methodName + " (";
347 Type[] ts = (Type[]) MethodSignature;
350 for (int n=0; n<_args.Length; n++)
353 if (_args[n] != null) s += _args[n].GetType().Name + " ";
355 if (_args[n] != null) s += " = {" + _args[n] + "}";