1 files changed, 367 insertions, 0 deletions

diff --git a/OpenSim/Region/CoreModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs b/OpenSim/Region/CoreModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
new file mode 100644
index 0000000..98396ff
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
@@ -0,0 +1,367 @@
+/*
+ * 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);
+
+        private Dictionary<string,object> m_constants = new Dictionary<string,object>();
+
+#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);
+        }
+
+        private static MethodInfo GetMethodInfoFromType(Type target, string meth, bool searchInstanceMethods)
+        {
+            BindingFlags getMethodFlags =
+                    BindingFlags.NonPublic | BindingFlags.Public;
+
+            if (searchInstanceMethods)
+                getMethodFlags |= BindingFlags.Instance;
+            else
+                getMethodFlags |= BindingFlags.Static;
+
+            return target.GetMethod(meth, getMethodFlags);
+        }
+
+        public void RegisterScriptInvocation(object target, string meth)
+        {
+            MethodInfo mi = GetMethodInfoFromType(target.GetType(), meth, true);
+            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 is Type) ? ((Type)target).Name : target.GetType().Name);
+
+            Type delegateType;
+            List<Type> 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;
+            if (!(target is Type))
+                fcall = Delegate.CreateDelegate(delegateType, target, mi);
+            else
+                fcall = Delegate.CreateDelegate(delegateType, (Type)target, mi.Name);
+
+            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 void RegisterScriptInvocation(Type target, string[] methods)
+        {
+            foreach (string method in methods)
+            {
+                MethodInfo mi = GetMethodInfoFromType(target, method, false);
+                if (mi == null)
+                    m_log.WarnFormat("[MODULE COMMANDS] Failed to register method {0}", method);
+                else
+                    RegisterScriptInvocation(target, mi);
+            }
+        }
+
+        public void RegisterScriptInvocations(IRegionModuleBase target)
+        {
+            foreach(MethodInfo method in target.GetType().GetMethods(
+                    BindingFlags.Public | BindingFlags.Instance |
+                    BindingFlags.Static))
+            {
+                if(method.GetCustomAttributes(
+                        typeof(ScriptInvocationAttribute), true).Any())
+                {
+                    if(method.IsStatic)
+                        RegisterScriptInvocation(target.GetType(), method);
+                    else
+                        RegisterScriptInvocation(target, method);
+                }
+            }
+        }
+        
+        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());
+        }
+
+        /// <summary>
+        /// Operation to for a region module to register a constant to be used
+        /// by the script engine
+        /// </summary>
+        public void RegisterConstant(string cname, object value)
+        {
+            m_log.DebugFormat("[MODULE COMMANDS] register constant <{0}> with value {1}",cname,value.ToString());
+            lock (m_constants)
+            {
+                m_constants.Add(cname,value);
+            }
+        }
+
+        public void RegisterConstants(IRegionModuleBase target)
+        {
+            foreach (FieldInfo field in target.GetType().GetFields(
+                    BindingFlags.Public | BindingFlags.Static |
+                    BindingFlags.Instance))
+            {
+                if (field.GetCustomAttributes(
+                        typeof(ScriptConstantAttribute), true).Any())
+                {
+                    RegisterConstant(field.Name, field.GetValue(target));
+                }
+            }
+        }
+
+        /// <summary>
+        /// Operation to check for a registered constant
+        /// </summary>
+        public object LookupModConstant(string cname)
+        {
+            // m_log.DebugFormat("[MODULE COMMANDS] lookup constant <{0}>",cname);
+            
+            lock (m_constants)
+            {
+                object value = null;
+                if (m_constants.TryGetValue(cname,out value))
+                    return value;
+            }
+            
+            return null;
+        }
+
+#endregion
+
+    }
+}