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879 lines
34 KiB
C#
879 lines
34 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Threading;
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using System.Reflection;
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using System.Collections;
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using System.Collections.Generic;
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using System.Runtime.Remoting.Lifetime;
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using System.Security.Policy;
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using System.IO;
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using System.Xml;
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using System.Text;
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using OpenMetaverse;
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using OpenSim.Framework;
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using OpenSim.Region.ScriptEngine.Interfaces;
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using OpenSim.Region.ScriptEngine.Shared;
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using OpenSim.Region.ScriptEngine.Shared.Api;
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using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
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using OpenSim.Region.ScriptEngine.XMREngine;
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using OpenSim.Region.Framework.Scenes;
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using log4net;
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using LSL_Float = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLFloat;
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using LSL_Integer = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger;
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using LSL_Key = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
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using LSL_List = OpenSim.Region.ScriptEngine.Shared.LSL_Types.list;
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using LSL_Rotation = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Quaternion;
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using LSL_String = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
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using LSL_Vector = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Vector3;
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namespace OpenSim.Region.ScriptEngine.XMREngine
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{
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public partial class XMRInstance
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{
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/****************************************************************************\
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* The only method of interest to outside this module is the Initializer. *
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* *
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* The rest of this module contains support routines for the Initializer. *
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\****************************************************************************/
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/**
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* @brief Initializer, loads script in memory and all ready for running.
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* @param engine = XMREngine instance this is part of
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* @param scriptBasePath = directory name where files are
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* @param stackSize = number of bytes to allocate for stacks
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* @param errors = return compiler errors in this array
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* @param forceRecomp = force recompile
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* Throws exception if any error, so it was successful if it returns.
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*/
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public void Initialize(XMREngine engine, string scriptBasePath,
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int stackSize, int heapSize, ArrayList errors)
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{
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if (stackSize < 16384) stackSize = 16384;
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if (heapSize < 16384) heapSize = 16384;
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/*
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* Save all call parameters in instance vars for easy access.
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*/
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m_Engine = engine;
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m_ScriptBasePath = scriptBasePath;
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m_StackSize = stackSize;
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m_HeapSize = heapSize;
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m_CompilerErrors = errors;
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m_StateFileName = GetStateFileName(scriptBasePath, m_ItemID);
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/*
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* Not in any XMRInstQueue.
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*/
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m_NextInst = this;
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m_PrevInst = this;
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/*
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* Set up list of API calls it has available.
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* This also gets the API modules ready to accept setup data, such as
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* active listeners being restored.
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*/
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IScriptApi scriptApi;
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ApiManager am = new ApiManager();
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foreach (string api in am.GetApis())
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{
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/*
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* Instantiate the API for this script instance.
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*/
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if (api != "LSL") {
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scriptApi = am.CreateApi(api);
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} else {
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scriptApi = m_XMRLSLApi = new XMRLSL_Api();
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}
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/*
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* Connect it up to the instance.
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*/
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InitScriptApi (engine, api, scriptApi);
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}
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m_XMRLSLApi.InitXMRLSLApi(this);
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/*
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* Get object loaded, compiling script and reading .state file as
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* necessary to restore the state.
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*/
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suspendOnCheckRunHold = true;
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InstantiateScript();
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m_SourceCode = null;
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if (m_ObjCode == null) throw new ArgumentNullException ("m_ObjCode");
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if (m_ObjCode.scriptEventHandlerTable == null) {
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throw new ArgumentNullException ("m_ObjCode.scriptEventHandlerTable");
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}
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suspendOnCheckRunHold = false;
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suspendOnCheckRunTemp = false;
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/*
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* Declare which events the script's current state can handle.
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*/
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int eventMask = GetStateEventFlags(stateCode);
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m_Part.SetScriptEvents(m_ItemID, eventMask);
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}
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private void InitScriptApi (XMREngine engine, string api, IScriptApi scriptApi)
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{
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/*
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* Set up m_ApiManager_<APINAME> = instance pointer.
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*/
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engine.m_XMRInstanceApiCtxFieldInfos[api].SetValue (this, scriptApi);
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/*
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* Initialize the API instance.
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*/
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scriptApi.Initialize(m_Engine, m_Part, m_Item);
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this.InitApi (api, scriptApi);
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}
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// Get script object code loaded in memory and all ready to run,
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// ready to resume it from where the .state file says it was last
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private void InstantiateScript()
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{
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bool compiledIt = false;
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ScriptObjCode objCode;
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/*
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* If source code string is empty, use the asset ID as the object file name.
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* Allow lines of // comments at the beginning (for such as engine selection).
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*/
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int i, j, len;
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if (m_SourceCode == null) m_SourceCode = String.Empty;
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for (len = m_SourceCode.Length; len > 0; -- len) {
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if (m_SourceCode[len-1] > ' ') break;
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}
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for (i = 0; i < len; i ++) {
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char c = m_SourceCode[i];
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if (c <= ' ') continue;
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if (c != '/') break;
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if ((i + 1 >= len) || (m_SourceCode[i+1] != '/')) break;
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i = m_SourceCode.IndexOf ('\n', i);
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if (i < 0) i = len - 1;
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}
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if ((i >= len) || !m_Engine.m_UseSourceHashCode) {
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/*
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* Source consists of nothing but // comments and whitespace,
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* or we are being forced to use the asset-id as the key, to
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* open an already existing object code file.
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*/
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m_ScriptObjCodeKey = m_Item.AssetID.ToString ();
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if (i >= len) m_SourceCode = "";
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} else {
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/*
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* Make up dictionary key for the object code.
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* Use the same object code for identical source code
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* regardless of asset ID, so we don't care if they
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* copy scripts or not.
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*/
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byte[] scbytes = System.Text.Encoding.UTF8.GetBytes (m_SourceCode);
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StringBuilder sb = new StringBuilder ((256 + 5) / 6);
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ByteArrayToSixbitStr (sb, System.Security.Cryptography.SHA256.Create ().ComputeHash (scbytes));
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m_ScriptObjCodeKey = sb.ToString ();
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/*
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* But source code can be just a sixbit string itself
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* that identifies an already existing object code file.
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*/
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if (len - i == m_ScriptObjCodeKey.Length) {
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for (j = len; -- j >= i;) {
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if (sixbit.IndexOf (m_SourceCode[j]) < 0) break;
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}
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if (j < i) {
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m_ScriptObjCodeKey = m_SourceCode.Substring (i, len - i);
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m_SourceCode = "";
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}
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}
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}
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/*
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* There may already be an ScriptObjCode struct in memory that
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* we can use. If not, try to compile it.
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*/
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lock (m_CompileLock) {
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if (!m_CompiledScriptObjCode.TryGetValue (m_ScriptObjCodeKey, out objCode) || m_ForceRecomp) {
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objCode = TryToCompile ();
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compiledIt = true;
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}
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/*
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* Loaded successfully, increment reference count.
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*
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* If we just compiled it though, reset count to 0 first as
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* this is the one-and-only existance of this objCode struct,
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* and we want any old ones for this source code to be garbage
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* collected.
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*/
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if (compiledIt) {
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m_CompiledScriptObjCode[m_ScriptObjCodeKey] = objCode;
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objCode.refCount = 0;
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}
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objCode.refCount ++;
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/*
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* Now set up to decrement ref count on dispose.
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*/
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m_ObjCode = objCode;
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}
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try {
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/*
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* Fill in script instance from object code
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* Script instance is put in a "never-ever-has-run-before" state.
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*/
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LoadObjCode();
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/*
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* Fill in script intial state
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* - either as loaded from a .state file
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* - or initial default state_entry() event
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*/
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LoadInitialState();
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} catch {
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/*
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* If any error loading, decrement object code reference count.
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*/
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DecObjCodeRefCount ();
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throw;
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}
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}
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private const string sixbit = "0123456789_abcdefghijklmnopqrstuvwxyz@ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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private static void ByteArrayToSixbitStr (StringBuilder sb, byte[] bytes)
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{
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int bit = 0;
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int val = 0;
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foreach (byte b in bytes) {
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val |= (int)((uint)b << bit);
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bit += 8;
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while (bit >= 6) {
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sb.Append (sixbit[val&63]);
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val >>= 6;
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bit -= 6;
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}
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}
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if (bit > 0) {
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sb.Append (sixbit[val&63]);
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}
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}
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// Try to create object code from source code
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// If error, just throw exception
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private ScriptObjCode TryToCompile ()
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{
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m_CompilerErrors.Clear();
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/*
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* If object file exists, create ScriptObjCode directly from that.
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* Otherwise, compile the source to create object file then create
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* ScriptObjCode from that.
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*/
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string assetID = m_Item.AssetID.ToString();
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m_CameFrom = "asset://" + assetID;
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ScriptObjCode objCode = Compile ();
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if (m_CompilerErrors.Count != 0)
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{
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throw new Exception ("compilation errors");
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}
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if (objCode == null)
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{
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throw new Exception ("compilation failed");
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}
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return objCode;
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}
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/*
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* Retrieve source from asset server.
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*/
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private string FetchSource (string cameFrom)
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{
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m_log.Debug ("[XMREngine]: fetching source " + cameFrom);
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if (!cameFrom.StartsWith ("asset://")) {
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throw new Exception ("unable to retrieve source from " + cameFrom);
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}
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string assetID = cameFrom.Substring (8);
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AssetBase asset = m_Engine.World.AssetService.Get(assetID);
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if (asset == null) {
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throw new Exception ("source not found " + cameFrom);
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}
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string source = Encoding.UTF8.GetString (asset.Data);
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if (EmptySource (source)) {
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throw new Exception ("fetched source empty " + cameFrom);
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}
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return source;
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}
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/*
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* Fill in script object initial contents.
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* Set the initial state to "default".
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*/
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private void LoadObjCode ()
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{
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/*
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* Script must leave this much stack remaining on calls to CheckRun().
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*/
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this.stackLimit = m_StackSize / 2;
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/*
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* This is how many total heap bytes script is allowed to use.
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*/
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this.heapLimit = m_HeapSize;
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/*
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* Allocate global variable arrays.
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*/
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this.glblVars.AllocVarArrays (m_ObjCode.glblSizes);
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/*
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* Script can handle these event codes.
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*/
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m_HaveEventHandlers = new bool[m_ObjCode.scriptEventHandlerTable.GetLength(1)];
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for (int i = m_ObjCode.scriptEventHandlerTable.GetLength(0); -- i >= 0;) {
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for (int j = m_ObjCode.scriptEventHandlerTable.GetLength(1); -- j >= 0;) {
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if (m_ObjCode.scriptEventHandlerTable[i,j] != null) {
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m_HaveEventHandlers[j] = true;
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}
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}
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}
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/*
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* Set up microthread object which actually calls the script event handler functions.
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*/
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this.microthread = (IScriptUThread)m_Engine.uThreadCtor.Invoke (new object[] { this });
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}
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// LoadInitialState()
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// if no state XML file exists for the asset,
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// post initial default state events
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// else
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// try to restore from .state file
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// If any error, throw exception
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//
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private void LoadInitialState()
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{
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/*
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* If no .state file exists, start from default state
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* Otherwise, read initial state from the .state file
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*/
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if (!File.Exists(m_StateFileName)) {
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m_Running = true; // event processing is enabled
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eventCode = ScriptEventCode.None; // not processing any event
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// default state_entry() must initialize global variables
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doGblInit = true;
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stateCode = 0;
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PostEvent(new EventParams("state_entry",
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zeroObjectArray,
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zeroDetectParams));
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} else {
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FileStream fs = File.Open(m_StateFileName,
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FileMode.Open,
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FileAccess.Read);
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StreamReader ss = new StreamReader(fs);
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string xml = ss.ReadToEnd();
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ss.Close();
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fs.Close();
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XmlDocument doc = new XmlDocument();
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doc.LoadXml(xml);
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LoadScriptState(doc);
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}
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/*
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* Post event(s) saying what caused the script to start.
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*/
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if (m_PostOnRez) {
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PostEvent(new EventParams("on_rez",
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new Object[] { m_StartParam },
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zeroDetectParams));
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}
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switch (m_StateSource) {
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case StateSource.AttachedRez: {
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// PostEvent(new EventParams("attach",
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// new object[] { m_Part.ParentGroup.AttachedAvatar.ToString() },
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// zeroDetectParams));
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break;
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}
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case StateSource.PrimCrossing: {
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PostEvent(new EventParams("changed",
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sbcCR,
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zeroDetectParams));
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break;
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}
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case StateSource.Teleporting: {
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PostEvent(new EventParams("changed",
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sbcCR,
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zeroDetectParams));
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PostEvent(new EventParams("changed",
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sbcCT,
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zeroDetectParams));
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break;
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}
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case StateSource.RegionStart: {
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PostEvent(new EventParams("changed",
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sbcCRS,
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zeroDetectParams));
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break;
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}
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}
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}
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private static Object[] sbcCRS = new Object[] { ScriptBaseClass.CHANGED_REGION_START };
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private static Object[] sbcCR = new Object[] { ScriptBaseClass.CHANGED_REGION };
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private static Object[] sbcCT = new Object[] { ScriptBaseClass.CHANGED_TELEPORT };
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/**
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* @brief Save compilation error messages for later retrieval
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* via GetScriptErrors().
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*/
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private void ErrorHandler(Token token, string message)
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{
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if (token != null) {
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string srcloc = token.SrcLoc;
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if (srcloc.StartsWith (m_CameFrom)) {
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srcloc = srcloc.Substring (m_CameFrom.Length);
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}
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m_CompilerErrors.Add(srcloc + " Error: " + message);
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} else if (message != null) {
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m_CompilerErrors.Add("(0,0) Error: " + message);
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} else {
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m_CompilerErrors.Add("(0,0) Error compiling, see exception in log");
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}
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}
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/**
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* @brief Load script state from the given XML doc into the script memory
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* <ScriptState Engine="XMREngine" Asset=...>
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* <Running>...</Running>
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* <DoGblInit>...</DoGblInit>
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* <Permissions granted=... mask=... />
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* RestoreDetectParams()
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* <Plugins>
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* ExtractXMLObjectArray("plugin")
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* </Plugins>
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* <Snapshot>
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* MigrateInEventHandler()
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* </Snapshot>
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* </ScriptState>
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*/
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private void LoadScriptState(XmlDocument doc)
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{
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DetectParams[] detParams;
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LinkedList<EventParams> eventQueue;
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// Everything we know is enclosed in <ScriptState>...</ScriptState>
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XmlElement scriptStateN = (XmlElement)doc.SelectSingleNode("ScriptState");
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if (scriptStateN == null) {
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throw new Exception("no <ScriptState> tag");
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}
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string sen = scriptStateN.GetAttribute("Engine");
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if ((sen == null) || (sen != m_Engine.ScriptEngineName)) {
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throw new Exception("<ScriptState> missing Engine=\"XMREngine\" attribute");
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}
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// AssetID is unique for the script source text so make sure the
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// state file was written for that source file
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string assetID = scriptStateN.GetAttribute("Asset");
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if (assetID != m_Item.AssetID.ToString())
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{
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throw new Exception("<ScriptState> assetID mismatch");
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}
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// Also match the sourceHash in case script was
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// loaded via 'xmroption fetchsource' and has changed
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string sourceHash = scriptStateN.GetAttribute ("SourceHash");
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if ((sourceHash == null) || (sourceHash != m_ObjCode.sourceHash)) {
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throw new Exception ("<ScriptState> SourceHash mismatch");
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}
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// Get various attributes
|
|
XmlElement runningN = (XmlElement)scriptStateN.SelectSingleNode("Running");
|
|
m_Running = bool.Parse(runningN.InnerText);
|
|
|
|
XmlElement doGblInitN = (XmlElement)scriptStateN.SelectSingleNode("DoGblInit");
|
|
doGblInit = bool.Parse(doGblInitN.InnerText);
|
|
|
|
XmlElement permissionsN = (XmlElement)scriptStateN.SelectSingleNode("Permissions");
|
|
m_Item.PermsGranter = new UUID(permissionsN.GetAttribute("granter"));
|
|
m_Item.PermsMask = Convert.ToInt32(permissionsN.GetAttribute("mask"));
|
|
m_Part.Inventory.UpdateInventoryItem(m_Item, false, false);
|
|
|
|
// get values used by stuff like llDetectedGrab, etc.
|
|
detParams = RestoreDetectParams(scriptStateN.SelectSingleNode("DetectArray"));
|
|
|
|
// Restore queued events
|
|
eventQueue = RestoreEventQueue(scriptStateN.SelectSingleNode("EventQueue"));
|
|
|
|
// Restore timers and listeners
|
|
XmlElement pluginN = (XmlElement)scriptStateN.SelectSingleNode("Plugins");
|
|
Object[] pluginData = ExtractXMLObjectArray(pluginN, "plugin");
|
|
|
|
// Script's global variables and stack contents
|
|
XmlElement snapshotN =
|
|
(XmlElement)scriptStateN.SelectSingleNode("Snapshot");
|
|
|
|
Byte[] data = Convert.FromBase64String(snapshotN.InnerText);
|
|
MemoryStream ms = new MemoryStream();
|
|
ms.Write(data, 0, data.Length);
|
|
ms.Seek(0, SeekOrigin.Begin);
|
|
MigrateInEventHandler(ms);
|
|
ms.Close();
|
|
|
|
// Restore event queues, preserving any events that queued
|
|
// whilst we were restoring the state
|
|
lock (m_QueueLock) {
|
|
m_DetectParams = detParams;
|
|
foreach (EventParams evt in m_EventQueue) {
|
|
eventQueue.AddLast (evt);
|
|
}
|
|
m_EventQueue = eventQueue;
|
|
for (int i = m_EventCounts.Length; -- i >= 0;) m_EventCounts[i] = 0;
|
|
foreach (EventParams evt in m_EventQueue)
|
|
{
|
|
ScriptEventCode eventCode = (ScriptEventCode)Enum.Parse (typeof (ScriptEventCode),
|
|
evt.EventName);
|
|
m_EventCounts[(int)eventCode] ++;
|
|
}
|
|
}
|
|
|
|
// Requeue timer and listeners (possibly queuing new events)
|
|
AsyncCommandManager.CreateFromData(m_Engine,
|
|
m_LocalID, m_ItemID, m_Part.UUID,
|
|
pluginData);
|
|
}
|
|
|
|
/**
|
|
* @brief Read llDetectedGrab, etc, values from XML
|
|
* <EventQueue>
|
|
* <DetectParams>...</DetectParams>
|
|
* .
|
|
* .
|
|
* .
|
|
* </EventQueue>
|
|
*/
|
|
private LinkedList<EventParams> RestoreEventQueue(XmlNode eventsN)
|
|
{
|
|
LinkedList<EventParams> eventQueue = new LinkedList<EventParams>();
|
|
if (eventsN != null) {
|
|
XmlNodeList eventL = eventsN.SelectNodes("Event");
|
|
foreach (XmlNode evnt in eventL)
|
|
{
|
|
string name = ((XmlElement)evnt).GetAttribute("Name");
|
|
object[] parms = ExtractXMLObjectArray(evnt, "param");
|
|
DetectParams[] detects = RestoreDetectParams(evnt);
|
|
|
|
if (parms == null) parms = zeroObjectArray;
|
|
if (detects == null) detects = zeroDetectParams;
|
|
|
|
EventParams evt = new EventParams(name, parms, detects);
|
|
eventQueue.AddLast(evt);
|
|
}
|
|
}
|
|
return eventQueue;
|
|
}
|
|
|
|
/**
|
|
* @brief Read llDetectedGrab, etc, values from XML
|
|
* <DetectArray>
|
|
* <DetectParams>...</DetectParams>
|
|
* .
|
|
* .
|
|
* .
|
|
* </DetectArray>
|
|
*/
|
|
private DetectParams[] RestoreDetectParams(XmlNode detectedN)
|
|
{
|
|
if (detectedN == null) return null;
|
|
|
|
List<DetectParams> detected = new List<DetectParams>();
|
|
XmlNodeList detectL = detectedN.SelectNodes("DetectParams");
|
|
|
|
DetectParams detprm = new DetectParams();
|
|
foreach (XmlNode detxml in detectL) {
|
|
try {
|
|
detprm.Group = new UUID(detxml.Attributes.GetNamedItem("group").Value);
|
|
detprm.Key = new UUID(detxml.Attributes.GetNamedItem("key").Value);
|
|
detprm.Owner = new UUID(detxml.Attributes.GetNamedItem("owner").Value);
|
|
|
|
detprm.LinkNum = Int32.Parse(detxml.Attributes.GetNamedItem("linkNum").Value);
|
|
detprm.Type = Int32.Parse(detxml.Attributes.GetNamedItem("type").Value);
|
|
|
|
detprm.Name = detxml.Attributes.GetNamedItem("name").Value;
|
|
|
|
detprm.OffsetPos = new LSL_Types.Vector3(detxml.Attributes.GetNamedItem("pos").Value);
|
|
detprm.Position = new LSL_Types.Vector3(detxml.Attributes.GetNamedItem("position").Value);
|
|
detprm.Velocity = new LSL_Types.Vector3(detxml.Attributes.GetNamedItem("velocity").Value);
|
|
|
|
detprm.Rotation = new LSL_Types.Quaternion(detxml.Attributes.GetNamedItem("rotation").Value);
|
|
|
|
detected.Add(detprm);
|
|
detprm = new DetectParams();
|
|
} catch (Exception e) {
|
|
m_log.Warn("[XMREngine]: RestoreDetectParams bad XML: " + detxml.ToString());
|
|
m_log.Warn("[XMREngine]: ... " + e.ToString());
|
|
}
|
|
}
|
|
|
|
return detected.ToArray();
|
|
}
|
|
|
|
/**
|
|
* @brief Extract elements of an array of objects from an XML parent.
|
|
* Each element is of form <tag ...>...</tag>
|
|
* @param parent = XML parent to extract them from
|
|
* @param tag = what the value's tag is
|
|
* @returns object array of the values
|
|
*/
|
|
private static object[] ExtractXMLObjectArray(XmlNode parent, string tag)
|
|
{
|
|
List<Object> olist = new List<Object>();
|
|
|
|
XmlNodeList itemL = parent.SelectNodes(tag);
|
|
foreach (XmlNode item in itemL)
|
|
{
|
|
olist.Add(ExtractXMLObjectValue(item));
|
|
}
|
|
|
|
return olist.ToArray();
|
|
}
|
|
|
|
private static object ExtractXMLObjectValue(XmlNode item)
|
|
{
|
|
string itemType = item.Attributes.GetNamedItem("type").Value;
|
|
|
|
if (itemType == "list")
|
|
{
|
|
return new LSL_List(ExtractXMLObjectArray(item, "item"));
|
|
}
|
|
|
|
if (itemType == "OpenMetaverse.UUID")
|
|
{
|
|
UUID val = new UUID();
|
|
UUID.TryParse(item.InnerText, out val);
|
|
return val;
|
|
}
|
|
|
|
Type itemT = Type.GetType(itemType);
|
|
if (itemT == null)
|
|
{
|
|
Object[] args = new Object[] { item.InnerText };
|
|
|
|
string assembly = itemType + ", OpenSim.Region.ScriptEngine.Shared";
|
|
itemT = Type.GetType(assembly);
|
|
if (itemT == null)
|
|
{
|
|
return null;
|
|
}
|
|
return Activator.CreateInstance(itemT, args);
|
|
}
|
|
|
|
return Convert.ChangeType(item.InnerText, itemT);
|
|
}
|
|
|
|
/*
|
|
* Migrate an event handler in from a stream.
|
|
*
|
|
* Input:
|
|
* stream = as generated by MigrateOutEventHandler()
|
|
*/
|
|
private void MigrateInEventHandler (Stream stream)
|
|
{
|
|
miehexcep = null;
|
|
|
|
// do all the work in the MigrateInEventHandlerThread() method below
|
|
miehstream = stream;
|
|
|
|
XMRScriptThread cst = XMRScriptThread.CurrentScriptThread ();
|
|
if (cst != null) {
|
|
|
|
// in case we are getting called inside some LSL Api function
|
|
MigrateInEventHandlerThread ();
|
|
} else {
|
|
|
|
// some other thread, do migration via a script thread
|
|
lock (XMRScriptThread.m_WakeUpLock) {
|
|
m_Engine.m_ThunkQueue.Enqueue (this.MigrateInEventHandlerThread);
|
|
}
|
|
XMRScriptThread.WakeUpOne ();
|
|
|
|
// wait for it to complete
|
|
lock (miehdone) {
|
|
while (miehstream != null) {
|
|
Monitor.Wait (miehdone);
|
|
}
|
|
}
|
|
}
|
|
|
|
// maybe it threw up
|
|
if (miehexcep != null) throw miehexcep;
|
|
}
|
|
private Exception miehexcep;
|
|
private object miehdone = new object ();
|
|
private Stream miehstream;
|
|
private void MigrateInEventHandlerThread ()
|
|
{
|
|
try {
|
|
int mv = miehstream.ReadByte ();
|
|
if (mv != migrationVersion) {
|
|
throw new Exception ("incoming migration version " + mv + " but accept only " + migrationVersion);
|
|
}
|
|
miehstream.ReadByte (); // ignored
|
|
|
|
/*
|
|
* Restore script variables and stack and other state from stream.
|
|
* And it also marks us busy (by setting this.eventCode) so we can't be
|
|
* started again and this event lost.
|
|
*/
|
|
BinaryReader br = new BinaryReader (miehstream);
|
|
this.MigrateIn (br);
|
|
|
|
/*
|
|
* If eventCode is None, it means the script was idle when migrated.
|
|
*/
|
|
if (this.eventCode != ScriptEventCode.None) {
|
|
|
|
/*
|
|
* So microthread.Start() calls XMRScriptUThread.Main() which calls the
|
|
* event handler function. The event handler function sees the stack
|
|
* frames in this.stackFrames and restores its args and locals, then calls
|
|
* whatever it was calling when the snapshot was taken. That function also
|
|
* sees this.stackFrames and restores its args and locals, and so on...
|
|
* Eventually it gets to the point of calling CheckRun() which sees we are
|
|
* doing a restore and it suspends, returning here with the microthread
|
|
* stack all restored. It shouldn't ever throw an exception.
|
|
*/
|
|
this.stackFramesRestored = false;
|
|
Exception te = microthread.StartEx ();
|
|
if (te != null) throw te;
|
|
if (!this.stackFramesRestored) throw new Exception ("migrate in did not complete");
|
|
}
|
|
} catch (Exception e) {
|
|
miehexcep = e;
|
|
} finally {
|
|
|
|
/*
|
|
* Wake the MigrateInEventHandler() method above.
|
|
*/
|
|
lock (miehdone) {
|
|
miehstream = null;
|
|
Monitor.Pulse (miehdone);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* See if permitted by configuration file.
|
|
* See OSSL_Api.CheckThreatLevelTest().
|
|
*/
|
|
public string CheckFetchbinaryAllowed ()
|
|
{
|
|
string ownerPerm = m_Engine.Config.GetString ("Allow_fetchbinary", "");
|
|
UUID ownerID = m_Item.OwnerID;
|
|
string[] ids = ownerPerm.Split (new char[] { ',' });
|
|
foreach (string id in ids) {
|
|
string curuc = id.Trim ().ToUpperInvariant ();
|
|
|
|
switch (curuc) {
|
|
case "ESTATE_MANAGER": {
|
|
if (m_Engine.m_Scene.RegionInfo.EstateSettings.IsEstateManagerOrOwner (ownerID) &&
|
|
(m_Engine.m_Scene.RegionInfo.EstateSettings.EstateOwner != ownerID)) {
|
|
return null;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case "ESTATE_OWNER": {
|
|
if (m_Engine.m_Scene.RegionInfo.EstateSettings.EstateOwner == ownerID) {
|
|
return null;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case "PARCEL_GROUP_MEMBER": {
|
|
ILandObject land = m_Engine.m_Scene.LandChannel.GetLandObject (m_Part.AbsolutePosition);
|
|
if (land.LandData.GroupID == m_Item.GroupID && land.LandData.GroupID != UUID.Zero) {
|
|
return null;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case "PARCEL_OWNER": {
|
|
ILandObject land = m_Engine.m_Scene.LandChannel.GetLandObject (m_Part.AbsolutePosition);
|
|
if (land.LandData.OwnerID == ownerID) {
|
|
return null;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case "TRUE": {
|
|
return null;
|
|
}
|
|
|
|
default: {
|
|
UUID uuid;
|
|
if (UUID.TryParse (curuc, out uuid)) {
|
|
if (uuid == ownerID) return null;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
string creatorPerm = m_Engine.Config.GetString ("Creators_fetchbinary", "");
|
|
UUID creatorID = m_Item.CreatorID;
|
|
ids = creatorPerm.Split (new char[] { ',' });
|
|
foreach (string id in ids) {
|
|
string current = id.Trim ();
|
|
UUID uuid;
|
|
if (UUID.TryParse (current, out uuid)) {
|
|
if (uuid != UUID.Zero) {
|
|
if (creatorID == uuid) return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
return "fetchbinary not enabled for owner " + ownerID + " creator " + creatorID;
|
|
}
|
|
}
|
|
}
|