338 lines
14 KiB
C#
338 lines
14 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.IO;
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using System.Reflection;
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using System.Text.RegularExpressions;
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using System.Threading;
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using log4net;
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using OpenMetaverse;
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using OpenMetaverse.Assets;
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using OpenSim.Framework;
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using OpenSim.Region.Framework.Scenes.Serialization;
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using OpenSim.Services.Interfaces;
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namespace OpenSim.Region.Framework.Scenes
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{
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/// <summary>
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/// Gather uuids for a given entity.
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/// </summary>
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///
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/// This does a deep inspection of the entity to retrieve all the assets it uses (whether as textures, as scripts
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/// contained in inventory, as scripts contained in objects contained in another object's inventory, etc. Assets
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/// are only retrieved when they are necessary to carry out the inspection (i.e. a serialized object needs to be
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/// retrieved to work out which assets it references).
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public class UuidGatherer
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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/// <summary>
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/// Asset cache used for gathering assets
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/// </summary>
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protected IAssetService m_assetCache;
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/// <summary>
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/// Used as a temporary store of an asset which represents an object. This can be a null if no appropriate
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/// asset was found by the asset service.
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/// </summary>
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protected AssetBase m_requestedObjectAsset;
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/// <summary>
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/// Signal whether we are currently waiting for the asset service to deliver an asset.
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/// </summary>
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protected bool m_waitingForObjectAsset;
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public UuidGatherer(IAssetService assetCache)
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{
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m_assetCache = assetCache;
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}
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/// <summary>
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/// Gather all the asset uuids associated with the asset referenced by a given uuid
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/// </summary>
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///
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/// This includes both those directly associated with
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/// it (e.g. face textures) and recursively, those of items within it's inventory (e.g. objects contained
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/// within this object).
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///
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/// <param name="assetUuid">The uuid of the asset for which to gather referenced assets</param>
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/// <param name="assetType">The type of the asset for the uuid given</param>
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/// <param name="assetUuids">The assets gathered</param>
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public void GatherAssetUuids(UUID assetUuid, AssetType assetType, IDictionary<UUID, AssetType> assetUuids)
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{
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try
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{
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assetUuids[assetUuid] = assetType;
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if (AssetType.Bodypart == assetType || AssetType.Clothing == assetType)
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{
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GetWearableAssetUuids(assetUuid, assetUuids);
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}
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else if (AssetType.Gesture == assetType)
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{
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GetGestureAssetUuids(assetUuid, assetUuids);
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}
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else if (AssetType.LSLText == assetType)
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{
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GetScriptAssetUuids(assetUuid, assetUuids);
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}
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else if (AssetType.Object == assetType)
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{
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GetSceneObjectAssetUuids(assetUuid, assetUuids);
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}
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}
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catch (Exception)
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{
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m_log.ErrorFormat(
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"[UUID GATHERER]: Failed to gather uuids for asset id {0}, type {1}",
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assetUuid, assetType);
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throw;
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}
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}
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/// <summary>
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/// Gather all the asset uuids associated with a given object.
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/// </summary>
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///
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/// This includes both those directly associated with
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/// it (e.g. face textures) and recursively, those of items within it's inventory (e.g. objects contained
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/// within this object).
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///
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/// <param name="sceneObject">The scene object for which to gather assets</param>
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/// <param name="assetUuids">The assets gathered</param>
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public void GatherAssetUuids(SceneObjectGroup sceneObject, IDictionary<UUID, AssetType> assetUuids)
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{
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// m_log.DebugFormat(
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// "[ASSET GATHERER]: Getting assets for object {0}, {1}", sceneObject.Name, sceneObject.UUID);
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foreach (SceneObjectPart part in sceneObject.GetParts())
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{
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// m_log.DebugFormat(
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// "[ARCHIVER]: Getting part {0}, {1} for object {2}", part.Name, part.UUID, sceneObject.UUID);
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try
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{
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Primitive.TextureEntry textureEntry = part.Shape.Textures;
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if (textureEntry != null)
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{
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// Get the prim's default texture. This will be used for faces which don't have their own texture
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if (textureEntry.DefaultTexture != null)
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assetUuids[textureEntry.DefaultTexture.TextureID] = AssetType.Texture;
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if (textureEntry.FaceTextures != null)
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{
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// Loop through the rest of the texture faces (a non-null face means the face is different from DefaultTexture)
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foreach (Primitive.TextureEntryFace texture in textureEntry.FaceTextures)
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{
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if (texture != null)
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assetUuids[texture.TextureID] = AssetType.Texture;
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}
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}
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}
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// If the prim is a sculpt then preserve this information too
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if (part.Shape.SculptTexture != UUID.Zero)
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assetUuids[part.Shape.SculptTexture] = AssetType.Texture;
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TaskInventoryDictionary taskDictionary = (TaskInventoryDictionary)part.TaskInventory.Clone();
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// Now analyze this prim's inventory items to preserve all the uuids that they reference
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foreach (TaskInventoryItem tii in taskDictionary.Values)
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{
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// m_log.DebugFormat(
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// "[ARCHIVER]: Analysing item {0} asset type {1} in {2} {3}",
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// tii.Name, tii.Type, part.Name, part.UUID);
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if (!assetUuids.ContainsKey(tii.AssetID))
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GatherAssetUuids(tii.AssetID, (AssetType)tii.Type, assetUuids);
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}
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}
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catch (Exception e)
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{
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m_log.ErrorFormat("[UUID GATHERER]: Failed to get part - {0}", e);
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m_log.DebugFormat(
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"[UUID GATHERER]: Texture entry length for prim was {0} (min is 46)",
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part.Shape.TextureEntry.Length);
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}
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}
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}
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/// <summary>
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/// The callback made when we request the asset for an object from the asset service.
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/// </summary>
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protected void AssetReceived(string id, Object sender, AssetBase asset)
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{
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lock (this)
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{
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m_requestedObjectAsset = asset;
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m_waitingForObjectAsset = false;
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Monitor.Pulse(this);
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}
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}
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/// <summary>
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/// Get an asset synchronously, potentially using an asynchronous callback. If the
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/// asynchronous callback is used, we will wait for it to complete.
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/// </summary>
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/// <param name="uuid"></param>
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/// <returns></returns>
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protected virtual AssetBase GetAsset(UUID uuid)
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{
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m_waitingForObjectAsset = true;
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m_assetCache.Get(uuid.ToString(), this, AssetReceived);
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// The asset cache callback can either
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//
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// 1. Complete on the same thread (if the asset is already in the cache) or
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// 2. Come in via a different thread (if we need to go fetch it).
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//
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// The code below handles both these alternatives.
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lock (this)
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{
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if (m_waitingForObjectAsset)
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{
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Monitor.Wait(this);
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m_waitingForObjectAsset = false;
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}
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}
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return m_requestedObjectAsset;
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}
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/// <summary>
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/// Record the asset uuids embedded within the given script.
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/// </summary>
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/// <param name="scriptUuid"></param>
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/// <param name="assetUuids">Dictionary in which to record the references</param>
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protected void GetScriptAssetUuids(UUID scriptUuid, IDictionary<UUID, AssetType> assetUuids)
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{
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AssetBase scriptAsset = GetAsset(scriptUuid);
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if (null != scriptAsset)
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{
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string script = Utils.BytesToString(scriptAsset.Data);
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//m_log.DebugFormat("[ARCHIVER]: Script {0}", script);
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MatchCollection uuidMatches = Util.UUIDPattern.Matches(script);
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//m_log.DebugFormat("[ARCHIVER]: Found {0} matches in script", uuidMatches.Count);
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foreach (Match uuidMatch in uuidMatches)
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{
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UUID uuid = new UUID(uuidMatch.Value);
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//m_log.DebugFormat("[ARCHIVER]: Recording {0} in script", uuid);
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// Assume AssetIDs embedded in scripts are textures
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assetUuids[uuid] = AssetType.Texture;
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}
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}
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}
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/// <summary>
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/// Record the uuids referenced by the given wearable asset
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/// </summary>
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/// <param name="wearableAssetUuid"></param>
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/// <param name="assetUuids">Dictionary in which to record the references</param>
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protected void GetWearableAssetUuids(UUID wearableAssetUuid, IDictionary<UUID, AssetType> assetUuids)
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{
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AssetBase assetBase = GetAsset(wearableAssetUuid);
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if (null != assetBase)
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{
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//m_log.Debug(new System.Text.ASCIIEncoding().GetString(bodypartAsset.Data));
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AssetWearable wearableAsset = new AssetBodypart(wearableAssetUuid, assetBase.Data);
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wearableAsset.Decode();
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//m_log.DebugFormat(
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// "[ARCHIVER]: Wearable asset {0} references {1} assets", wearableAssetUuid, wearableAsset.Textures.Count);
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foreach (UUID uuid in wearableAsset.Textures.Values)
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{
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assetUuids[uuid] = AssetType.Texture;
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}
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}
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}
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/// <summary>
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/// Get all the asset uuids associated with a given object. This includes both those directly associated with
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/// it (e.g. face textures) and recursively, those of items within it's inventory (e.g. objects contained
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/// within this object).
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/// </summary>
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/// <param name="sceneObject"></param>
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/// <param name="assetUuids"></param>
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protected void GetSceneObjectAssetUuids(UUID sceneObjectUuid, IDictionary<UUID, AssetType> assetUuids)
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{
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AssetBase objectAsset = GetAsset(sceneObjectUuid);
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if (null != objectAsset)
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{
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string xml = Utils.BytesToString(objectAsset.Data);
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SceneObjectGroup sog = SceneObjectSerializer.FromOriginalXmlFormat(xml);
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if (null != sog)
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GatherAssetUuids(sog, assetUuids);
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}
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}
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protected void GetGestureAssetUuids(UUID gestureUuid, IDictionary<UUID, AssetType> assetUuids)
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{
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AssetBase assetBase = GetAsset(gestureUuid);
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MemoryStream ms = new MemoryStream(assetBase.Data);
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StreamReader sr = new StreamReader(ms);
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sr.ReadLine(); // Unknown (Version?)
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sr.ReadLine(); // Unknown
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sr.ReadLine(); // Unknown
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sr.ReadLine(); // Name
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sr.ReadLine(); // Comment ?
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int count = Convert.ToInt32(sr.ReadLine()); // Item count
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for (int i = 0 ; i < count ; i++)
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{
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string type = sr.ReadLine();
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if (type == null)
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break;
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string name = sr.ReadLine();
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if (name == null)
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break;
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string id = sr.ReadLine();
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if (id == null)
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break;
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string unknown = sr.ReadLine();
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if (unknown == null)
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break;
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// If it can be parsed as a UUID, it is an asset ID
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UUID uuid;
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if (UUID.TryParse(id, out uuid))
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assetUuids[uuid] = AssetType.Animation;
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}
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}
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}
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}
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