aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
blob: 74a85e2cd5147c673e52e04eb139a0e91bfc5844 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the OpenSimulator Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Reflection;
using System.Collections.Generic;
using Nini.Config;
using log4net;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using Mono.Addins;
using OpenMetaverse;
using System.Linq;
using System.Linq.Expressions;

namespace OpenSim.Region.OptionalModules.Scripting.ScriptModuleComms
{
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "ScriptModuleCommsModule")]
    class ScriptModuleCommsModule : INonSharedRegionModule, IScriptModuleComms
    {
        private static readonly ILog m_log =
            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

#region ScriptInvocation
        protected class ScriptInvocationData
        {
            public Delegate ScriptInvocationDelegate { get; private set; }
            public string FunctionName { get; private set; }
            public Type[] TypeSignature { get; private set; }
            public Type ReturnType { get; private set; }

            public ScriptInvocationData(string fname, Delegate fn, Type[] callsig, Type returnsig)
            {
                FunctionName = fname;
                ScriptInvocationDelegate = fn;
                TypeSignature = callsig;
                ReturnType = returnsig;
            }
        }

        private Dictionary<string,ScriptInvocationData> m_scriptInvocation = new Dictionary<string,ScriptInvocationData>();
#endregion

        private IScriptModule m_scriptModule = null;
        public event ScriptCommand OnScriptCommand;

#region RegionModuleInterface
        public void Initialise(IConfigSource config)
        {
        }

        public void AddRegion(Scene scene)
        {
            scene.RegisterModuleInterface<IScriptModuleComms>(this);
        }

        public void RemoveRegion(Scene scene)
        {
        }

        public void RegionLoaded(Scene scene)
        {
            m_scriptModule = scene.RequestModuleInterface<IScriptModule>();
            
            if (m_scriptModule != null)
                m_log.Info("[MODULE COMMANDS]: Script engine found, module active");
        }

        public string Name
        {
            get { return "ScriptModuleCommsModule"; }
        }

        public Type ReplaceableInterface
        {
            get { return null; }
        }

        public void Close()
        {
        }
#endregion

#region ScriptModuleComms

        public void RaiseEvent(UUID script, string id, string module, string command, string k)
        {
            ScriptCommand c = OnScriptCommand;

            if (c == null)
                return;

            c(script, id, module, command, k);
        }

        public void DispatchReply(UUID script, int code, string text, string k)
        {
            if (m_scriptModule == null)
                return;

            Object[] args = new Object[] {-1, code, text, k};

            m_scriptModule.PostScriptEvent(script, "link_message", args);
        }

        public void RegisterScriptInvocation(object target, string meth)
        {
            MethodInfo mi = target.GetType().GetMethod(meth,
                    BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
            if (mi == null)
            {
                m_log.WarnFormat("[MODULE COMMANDS] Failed to register method {0}",meth);
                return;
            }

            RegisterScriptInvocation(target, mi);
        }

        public void RegisterScriptInvocation(object target, string[] meth)
        {
            foreach (string m in meth)
                RegisterScriptInvocation(target, m);
        }

        public void RegisterScriptInvocation(object target, MethodInfo mi)
        {
            m_log.DebugFormat("[MODULE COMMANDS] Register method {0} from type {1}", mi.Name, target.GetType().Name);

            Type delegateType;
            var typeArgs = mi.GetParameters()
                    .Select(p => p.ParameterType)
                    .ToList();

            if (mi.ReturnType == typeof(void))
            {
                    delegateType = Expression.GetActionType(typeArgs.ToArray());
            }
            else
            {
                    typeArgs.Add(mi.ReturnType);
                    delegateType = Expression.GetFuncType(typeArgs.ToArray());
            }

            Delegate fcall = Delegate.CreateDelegate(delegateType, target, mi);

            lock (m_scriptInvocation)
            {
                ParameterInfo[] parameters = fcall.Method.GetParameters ();
                if (parameters.Length < 2) // Must have two UUID params
                    return;

                // Hide the first two parameters
                Type[] parmTypes = new Type[parameters.Length - 2];
                for (int i = 2 ; i < parameters.Length ; i++)
                    parmTypes[i - 2] = parameters[i].ParameterType;
                m_scriptInvocation[fcall.Method.Name] = new ScriptInvocationData(fcall.Method.Name, fcall, parmTypes, fcall.Method.ReturnType);
            }
        }
        
        public Delegate[] GetScriptInvocationList()
        {
            List<Delegate> ret = new List<Delegate>();

            lock (m_scriptInvocation)
            {
                foreach (ScriptInvocationData d in m_scriptInvocation.Values)
                    ret.Add(d.ScriptInvocationDelegate);
            }
            return ret.ToArray();
        }

        public string LookupModInvocation(string fname)
        {
            lock (m_scriptInvocation)
            {
                ScriptInvocationData sid;
                if (m_scriptInvocation.TryGetValue(fname,out sid))
                {
                    if (sid.ReturnType == typeof(string))
                        return "modInvokeS";
                    else if (sid.ReturnType == typeof(int))
                        return "modInvokeI";
                    else if (sid.ReturnType == typeof(float))
                        return "modInvokeF";
                    else if (sid.ReturnType == typeof(UUID))
                        return "modInvokeK";
                    else if (sid.ReturnType == typeof(OpenMetaverse.Vector3))
                        return "modInvokeV";
                    else if (sid.ReturnType == typeof(OpenMetaverse.Quaternion))
                        return "modInvokeR";
                    else if (sid.ReturnType == typeof(object[]))
                        return "modInvokeL";

                    m_log.WarnFormat("[MODULE COMMANDS] failed to find match for {0} with return type {1}",fname,sid.ReturnType.Name);
                }
            }

            return null;
        }

        public Delegate LookupScriptInvocation(string fname)
        {
            lock (m_scriptInvocation)
            {
                ScriptInvocationData sid;
                if (m_scriptInvocation.TryGetValue(fname,out sid))
                    return sid.ScriptInvocationDelegate;
            }

            return null;
        }

        public Type[] LookupTypeSignature(string fname)
        {
            lock (m_scriptInvocation)
            {
                ScriptInvocationData sid;
                if (m_scriptInvocation.TryGetValue(fname,out sid))
                    return sid.TypeSignature;
            }

            return null;
        }

        public Type LookupReturnType(string fname)
        {
            lock (m_scriptInvocation)
            {
                ScriptInvocationData sid;
                if (m_scriptInvocation.TryGetValue(fname,out sid))
                    return sid.ReturnType;
            }

            return null;
        }

        public object InvokeOperation(UUID hostid, UUID scriptid, string fname, params object[] parms)
        {
            List<object> olist = new List<object>();
            olist.Add(hostid);
            olist.Add(scriptid);
            foreach (object o in parms)
                olist.Add(o);
            Delegate fn = LookupScriptInvocation(fname);
            return fn.DynamicInvoke(olist.ToArray());
        }
#endregion

    }
}