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diff --git a/Common/XmlRpcCS/XmlRpcSystemObject.cs b/Common/XmlRpcCS/XmlRpcSystemObject.cs
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1/*
2* Copyright (c) Contributors, http://www.openmetaverse.org/
3* See CONTRIBUTORS.TXT for a full list of copyright holders.
4*
5* Redistribution and use in source and binary forms, with or without
6* modification, are permitted provided that the following conditions are met:
7* * Redistributions of source code must retain the above copyright
8* notice, this list of conditions and the following disclaimer.
9* * Redistributions in binary form must reproduce the above copyright
10* notice, this list of conditions and the following disclaimer in the
11* documentation and/or other materials provided with the distribution.
12* * Neither the name of the OpenSim Project nor the
13* names of its contributors may be used to endorse or promote products
14* derived from this software without specific prior written permission.
15*
16* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
17* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*
27*/
28namespace Nwc.XmlRpc
29{
30 using System;
31 using System.Collections;
32 using System.Reflection;
33
34 /// <summary> XML-RPC System object implementation of extended specifications.</summary>
35 [XmlRpcExposed]
36 public class XmlRpcSystemObject
37 {
38 private XmlRpcServer _server;
39 static private IDictionary _methodHelp = new Hashtable();
40
41 /// <summary>Static <c>IDictionary</c> to hold mappings of method name to associated documentation String</summary>
42 static public IDictionary MethodHelp
43 {
44 get { return _methodHelp; }
45 }
46
47 /// <summary>Constructor.</summary>
48 /// <param name="server"><c>XmlRpcServer</c> server to be the system object for.</param>
49 public XmlRpcSystemObject(XmlRpcServer server)
50 {
51 _server = server;
52 server.Add("system", this);
53 _methodHelp.Add(this.GetType().FullName + ".methodHelp", "Return a string description.");
54 }
55
56 /// <summary>Invoke a method on a given object.</summary>
57 /// <remarks>Using reflection, and respecting the <c>XmlRpcExposed</c> attribute,
58 /// invoke the <paramref>methodName</paramref> method on the <paramref>target</paramref>
59 /// instance with the <paramref>parameters</paramref> provided. All this packages other <c>Invoke</c> methods
60 /// end up calling this.</remarks>
61 /// <returns><c>Object</c> the value the invoked method returns.</returns>
62 /// <exception cref="XmlRpcException">If method does not exist, is not exposed, parameters invalid, or invocation
63 /// results in an exception. Note, the <c>XmlRpcException.Code</c> will indicate cause.</exception>
64 static public Object Invoke(Object target, String methodName, IList parameters)
65 {
66 if (target == null)
67 throw new XmlRpcException(XmlRpcErrorCodes.SERVER_ERROR_METHOD,
68 XmlRpcErrorCodes.SERVER_ERROR_METHOD_MSG + ": Invalid target object.");
69
70 Type type = target.GetType();
71 MethodInfo method = type.GetMethod(methodName);
72
73 try
74 {
75 if (!XmlRpcExposedAttribute.ExposedMethod(target, methodName))
76 throw new XmlRpcException(XmlRpcErrorCodes.SERVER_ERROR_METHOD,
77 XmlRpcErrorCodes.SERVER_ERROR_METHOD_MSG + ": Method " + methodName + " is not exposed.");
78 }
79 catch (MissingMethodException me)
80 {
81 throw new XmlRpcException(XmlRpcErrorCodes.SERVER_ERROR_METHOD,
82 XmlRpcErrorCodes.SERVER_ERROR_METHOD_MSG + ": " + me.Message);
83 }
84
85 Object[] args = new Object[parameters.Count];
86
87 int index = 0;
88 foreach (Object arg in parameters)
89 {
90 args[index] = arg;
91 index++;
92 }
93
94 try
95 {
96 Object retValue = method.Invoke(target, args);
97 if (retValue == null)
98 throw new XmlRpcException(XmlRpcErrorCodes.APPLICATION_ERROR,
99 XmlRpcErrorCodes.APPLICATION_ERROR_MSG + ": Method returned NULL.");
100 return retValue;
101 }
102 catch (XmlRpcException e)
103 {
104 throw e;
105 }
106 catch (ArgumentException ae)
107 {
108 Logger.WriteEntry(XmlRpcErrorCodes.SERVER_ERROR_PARAMS_MSG + ": " + ae.Message,
109 LogLevel.Information);
110 String call = methodName + "( ";
111 foreach (Object o in args)
112 {
113 call += o.GetType().Name;
114 call += " ";
115 }
116 call += ")";
117 throw new XmlRpcException(XmlRpcErrorCodes.SERVER_ERROR_PARAMS,
118 XmlRpcErrorCodes.SERVER_ERROR_PARAMS_MSG + ": Arguement type mismatch invoking " + call);
119 }
120 catch (TargetParameterCountException tpce)
121 {
122 Logger.WriteEntry(XmlRpcErrorCodes.SERVER_ERROR_PARAMS_MSG + ": " + tpce.Message,
123 LogLevel.Information);
124 throw new XmlRpcException(XmlRpcErrorCodes.SERVER_ERROR_PARAMS,
125 XmlRpcErrorCodes.SERVER_ERROR_PARAMS_MSG + ": Arguement count mismatch invoking " + methodName);
126 }
127 catch (TargetInvocationException tie)
128 {
129 throw new XmlRpcException(XmlRpcErrorCodes.APPLICATION_ERROR,
130 XmlRpcErrorCodes.APPLICATION_ERROR_MSG + " Invoked method " + methodName + ": " + tie.Message);
131 }
132 }
133
134 /// <summary>List methods available on all handlers of this server.</summary>
135 /// <returns><c>IList</c> An array of <c>Strings</c>, each <c>String</c> will have form "object.method".</returns>
136 [XmlRpcExposed]
137 public IList listMethods()
138 {
139 IList methods = new ArrayList();
140 Boolean considerExposure;
141
142 foreach (DictionaryEntry handlerEntry in _server)
143 {
144 considerExposure = XmlRpcExposedAttribute.IsExposed(handlerEntry.Value.GetType());
145
146 foreach (MemberInfo mi in handlerEntry.Value.GetType().GetMembers())
147 {
148 if (mi.MemberType != MemberTypes.Method)
149 continue;
150
151 if (!((MethodInfo)mi).IsPublic)
152 continue;
153
154 if (considerExposure && !XmlRpcExposedAttribute.IsExposed(mi))
155 continue;
156
157 methods.Add(handlerEntry.Key + "." + mi.Name);
158 }
159 }
160
161 return methods;
162 }
163
164 /// <summary>Given a method name return the possible signatures for it.</summary>
165 /// <param name="name"><c>String</c> The object.method name to look up.</param>
166 /// <returns><c>IList</c> Of arrays of signatures.</returns>
167 [XmlRpcExposed]
168 public IList methodSignature(String name)
169 {
170 IList signatures = new ArrayList();
171 int index = name.IndexOf('.');
172
173 if (index < 0)
174 return signatures;
175
176 String oName = name.Substring(0, index);
177 Object obj = _server[oName];
178
179 if (obj == null)
180 return signatures;
181
182 MemberInfo[] mi = obj.GetType().GetMember(name.Substring(index + 1));
183
184 if (mi == null || mi.Length != 1) // for now we want a single signature
185 return signatures;
186
187 MethodInfo method;
188
189 try
190 {
191 method = (MethodInfo)mi[0];
192 }
193 catch (Exception e)
194 {
195 Logger.WriteEntry("Attempted methodSignature call on " + mi[0] + " caused: " + e,
196 LogLevel.Information);
197 return signatures;
198 }
199
200 if (!method.IsPublic)
201 return signatures;
202
203 IList signature = new ArrayList();
204 signature.Add(method.ReturnType.Name);
205
206 foreach (ParameterInfo param in method.GetParameters())
207 {
208 signature.Add(param.ParameterType.Name);
209 }
210
211
212 signatures.Add(signature);
213
214 return signatures;
215 }
216
217 /// <summary>Help for given method signature. Not implemented yet.</summary>
218 /// <param name="name"><c>String</c> The object.method name to look up.</param>
219 /// <returns><c>String</c> help text. Rich HTML text.</returns>
220 [XmlRpcExposed]
221 public String methodHelp(String name)
222 {
223 String help = null;
224
225 try
226 {
227 help = (String)_methodHelp[_server.MethodName(name)];
228 }
229 catch (XmlRpcException e)
230 {
231 throw e;
232 }
233 catch (Exception) { /* ignored */ };
234
235 if (help == null)
236 help = "No help available for: " + name;
237
238 return help;
239 }
240
241 /// <summary>Boxcarring support method.</summary>
242 /// <param name="calls"><c>IList</c> of calls</param>
243 /// <returns><c>ArrayList</c> of results/faults.</returns>
244 [XmlRpcExposed]
245 public IList multiCall(IList calls)
246 {
247 IList responses = new ArrayList();
248 XmlRpcResponse fault = new XmlRpcResponse();
249
250 foreach (IDictionary call in calls)
251 {
252 try
253 {
254 XmlRpcRequest req = new XmlRpcRequest((String)call[XmlRpcXmlTokens.METHOD_NAME],
255 (ArrayList)call[XmlRpcXmlTokens.PARAMS]);
256 Object results = _server.Invoke(req);
257 IList response = new ArrayList();
258 response.Add(results);
259 responses.Add(response);
260 }
261 catch (XmlRpcException e)
262 {
263 fault.SetFault(e.FaultCode, e.FaultString);
264 responses.Add(fault.Value);
265 }
266 catch (Exception e2)
267 {
268 fault.SetFault(XmlRpcErrorCodes.APPLICATION_ERROR,
269 XmlRpcErrorCodes.APPLICATION_ERROR_MSG + ": " + e2.Message);
270 responses.Add(fault.Value);
271 }
272 }
273
274 return responses;
275 }
276
277 }
278}
279
generated by cgit v1.1 at 2024-11-11 05:43:33 +0000