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504de8bc47
This is to accomodate situations where the authorization service is being used by the hypergrid, where visitors have no user account. See http://opensimulator.org/mantis/view.php?id=5517, this code is somewhat adapted/cleaned up from Michelle's patch I'm a little ambivalent about this since visitors could put anything in firstname/lastname so it's not much of an auth measure. It's up to the auth service to decide which data it actually uses. Possibly we should be passing through other info such as agent circuit ip
289 lines
13 KiB
C#
289 lines
13 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.Collections.Generic;
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using System.Threading;
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using System.Reflection;
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using System.Xml;
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using System.Diagnostics;
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using System.Xml.Schema;
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using System.Xml.Serialization;
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using log4net;
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using OpenMetaverse;
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namespace OpenSim.Framework
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{
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/// <summary>
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/// A dictionary for task inventory.
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/// </summary>
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/// This class is not thread safe. Callers must synchronize on Dictionary methods or Clone() this object before
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/// iterating over it.
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public class TaskInventoryDictionary : Dictionary<UUID, TaskInventoryItem>,
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ICloneable, IXmlSerializable
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{
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// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private static XmlSerializer tiiSerializer = new XmlSerializer(typeof (TaskInventoryItem));
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private Thread LockedByThread;
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private string WriterStack;
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private Dictionary<Thread, string> ReadLockers =
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new Dictionary<Thread, string>();
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/// <value>
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/// An advanced lock for inventory data
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/// </value>
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private System.Threading.ReaderWriterLockSlim m_itemLock = new System.Threading.ReaderWriterLockSlim();
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/// <summary>
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/// Are we readlocked by the calling thread?
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/// </summary>
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public bool IsReadLockedByMe()
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{
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if (m_itemLock.RecursiveReadCount > 0)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// Lock our inventory list for reading (many can read, one can write)
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/// </summary>
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public void LockItemsForRead(bool locked)
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{
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if (locked)
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{
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if (m_itemLock.IsWriteLockHeld && LockedByThread != null)
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{
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if (!LockedByThread.IsAlive)
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{
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//Locked by dead thread, reset.
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m_itemLock = new System.Threading.ReaderWriterLockSlim();
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}
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}
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if (m_itemLock.RecursiveReadCount > 0)
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{
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m_log.Error("[TaskInventoryDictionary] Recursive read lock requested. This should not happen and means something needs to be fixed. For now though, it's safe to continue.");
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try
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{
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StackTrace stackTrace = new StackTrace(); // get call stack
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StackFrame[] stackFrames = stackTrace.GetFrames(); // get method calls (frames)
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// write call stack method names
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foreach (StackFrame stackFrame in stackFrames)
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{
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m_log.Error("[SceneObjectGroup.m_parts] "+(stackFrame.GetMethod().Name)); // write method name
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}
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}
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catch
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{}
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m_itemLock.ExitReadLock();
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}
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if (m_itemLock.RecursiveWriteCount > 0)
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{
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m_log.Error("[TaskInventoryDictionary] Recursive write lock requested. This should not happen and means something needs to be fixed.");
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m_itemLock.ExitWriteLock();
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}
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while (!m_itemLock.TryEnterReadLock(60000))
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{
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m_log.Error("Thread lock detected while trying to aquire READ lock in TaskInventoryDictionary. Locked by thread " + LockedByThread.Name + ". I'm going to try to solve the thread lock automatically to preserve region stability, but this needs to be fixed.");
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if (m_itemLock.IsWriteLockHeld)
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{
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m_itemLock = new System.Threading.ReaderWriterLockSlim();
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System.Console.WriteLine("------------------------------------------");
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System.Console.WriteLine("My call stack:\n" + Environment.StackTrace);
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System.Console.WriteLine("------------------------------------------");
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System.Console.WriteLine("Locker's call stack:\n" + WriterStack);
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System.Console.WriteLine("------------------------------------------");
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LockedByThread = null;
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ReadLockers.Clear();
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}
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}
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}
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else
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{
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if (m_itemLock.RecursiveReadCount>0)
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{
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m_itemLock.ExitReadLock();
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}
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}
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}
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/// <summary>
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/// Lock our inventory list for writing (many can read, one can write)
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/// </summary>
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public void LockItemsForWrite(bool locked)
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{
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if (locked)
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{
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//Enter a write lock, wait indefinately for one to open.
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if (m_itemLock.RecursiveReadCount > 0)
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{
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m_log.Error("[TaskInventoryDictionary] Recursive read lock requested. This should not happen and means something needs to be fixed. For now though, it's safe to continue.");
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m_itemLock.ExitReadLock();
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}
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if (m_itemLock.RecursiveWriteCount > 0)
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{
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m_log.Error("[TaskInventoryDictionary] Recursive write lock requested. This should not happen and means something needs to be fixed.");
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m_itemLock.ExitWriteLock();
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}
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while (!m_itemLock.TryEnterWriteLock(60000))
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{
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if (m_itemLock.IsWriteLockHeld)
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{
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m_log.Error("Thread lock detected while trying to aquire WRITE lock in TaskInventoryDictionary. Locked by thread " + LockedByThread.Name + ". I'm going to try to solve the thread lock automatically to preserve region stability, but this needs to be fixed.");
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System.Console.WriteLine("------------------------------------------");
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System.Console.WriteLine("My call stack:\n" + Environment.StackTrace);
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System.Console.WriteLine("------------------------------------------");
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System.Console.WriteLine("Locker's call stack:\n" + WriterStack);
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System.Console.WriteLine("------------------------------------------");
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}
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else
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{
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m_log.Error("Thread lock detected while trying to aquire WRITE lock in TaskInventoryDictionary. Locked by a reader. I'm going to try to solve the thread lock automatically to preserve region stability, but this needs to be fixed.");
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System.Console.WriteLine("------------------------------------------");
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System.Console.WriteLine("My call stack:\n" + Environment.StackTrace);
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System.Console.WriteLine("------------------------------------------");
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foreach (KeyValuePair<Thread, string> kvp in ReadLockers)
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{
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System.Console.WriteLine("Locker name {0} call stack:\n" + kvp.Value, kvp.Key.Name);
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System.Console.WriteLine("------------------------------------------");
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}
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}
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m_itemLock = new System.Threading.ReaderWriterLockSlim();
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ReadLockers.Clear();
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}
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LockedByThread = Thread.CurrentThread;
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WriterStack = Environment.StackTrace;
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}
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else
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{
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if (m_itemLock.RecursiveWriteCount > 0)
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{
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m_itemLock.ExitWriteLock();
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}
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}
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}
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#region ICloneable Members
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public Object Clone()
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{
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TaskInventoryDictionary clone = new TaskInventoryDictionary();
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m_itemLock.EnterReadLock();
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foreach (UUID uuid in Keys)
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{
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clone.Add(uuid, (TaskInventoryItem) this[uuid].Clone());
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}
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m_itemLock.ExitReadLock();
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return clone;
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}
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#endregion
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// The alternative of simply serializing the list doesn't appear to work on mono, since
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// we get a
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//
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// System.TypeInitializationException: An exception was thrown by the type initializer for OpenSim.Framework.TaskInventoryDictionary ---> System.ArgumentOutOfRangeException: < 0
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// Parameter name: length
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// at System.String.Substring (Int32 startIndex, Int32 length) [0x00088] in /build/buildd/mono-1.2.4/mcs/class/corlib/System/String.cs:381
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// at System.Xml.Serialization.TypeTranslator.GetTypeData (System.Type runtimeType, System.String xmlDataType) [0x001f6] in /build/buildd/mono-1.2.4/mcs/class/System.XML/System.Xml.Serialization/TypeTranslator.cs:217
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// ...
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// private static XmlSerializer tiiSerializer
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// = new XmlSerializer(typeof(Dictionary<UUID, TaskInventoryItem>.ValueCollection));
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// see IXmlSerializable
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#region IXmlSerializable Members
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public XmlSchema GetSchema()
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{
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return null;
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}
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// see IXmlSerializable
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public void ReadXml(XmlReader reader)
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{
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// m_log.DebugFormat("[TASK INVENTORY]: ReadXml current node before actions, {0}", reader.Name);
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if (!reader.IsEmptyElement)
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{
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reader.Read();
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while (tiiSerializer.CanDeserialize(reader))
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{
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TaskInventoryItem item = (TaskInventoryItem) tiiSerializer.Deserialize(reader);
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Add(item.ItemID, item);
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//m_log.DebugFormat("[TASK INVENTORY]: Instanted prim item {0}, {1} from xml", item.Name, item.ItemID);
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}
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// m_log.DebugFormat("[TASK INVENTORY]: Instantiated {0} prim items in total from xml", Count);
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}
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// else
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// {
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// m_log.DebugFormat("[TASK INVENTORY]: Skipping empty element {0}", reader.Name);
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// }
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// For some .net implementations, this last read is necessary so that we advance beyond the end tag
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// of the element wrapping this object so that the rest of the serialization can complete normally.
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reader.Read();
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// m_log.DebugFormat("[TASK INVENTORY]: ReadXml current node after actions, {0}", reader.Name);
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}
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// see IXmlSerializable
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public void WriteXml(XmlWriter writer)
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{
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lock (this)
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{
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foreach (TaskInventoryItem item in Values)
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{
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tiiSerializer.Serialize(writer, item);
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}
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}
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//tiiSerializer.Serialize(writer, Values);
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}
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#endregion
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// see ICloneable
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}
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}
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