47c6034f9c
* Partial implementation of RezScript * Ported LSL to C# conversion code from OpenSim. Big thank you to all of the OpenSim contributors * Moved Simian scripting code to a new folder git-svn-id: http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk@2518 52acb1d6-8a22-11de-b505-999d5b087335
459 lines
20 KiB
C#
459 lines
20 KiB
C#
using System;
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using System.Collections.Generic;
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using ExtensionLoader;
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using OpenMetaverse;
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using OpenMetaverse.Packets;
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namespace Simian
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{
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public class LLAssets : IExtension<ISceneProvider>
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{
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ISceneProvider scene;
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Dictionary<ulong, XferDownload> currentDownloads = new Dictionary<ulong, XferDownload>();
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Dictionary<ulong, Asset> currentUploads = new Dictionary<ulong, Asset>();
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public LLAssets()
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{
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}
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public bool Start(ISceneProvider scene)
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{
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this.scene = scene;
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scene.UDP.RegisterPacketCallback(PacketType.RequestXfer, RequestXferHandler);
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scene.UDP.RegisterPacketCallback(PacketType.ConfirmXferPacket, ConfirmXferPacketHandler);
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scene.UDP.RegisterPacketCallback(PacketType.AssetUploadRequest, AssetUploadRequestHandler);
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scene.UDP.RegisterPacketCallback(PacketType.SendXferPacket, SendXferPacketHandler);
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scene.UDP.RegisterPacketCallback(PacketType.AbortXfer, AbortXferHandler);
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scene.UDP.RegisterPacketCallback(PacketType.TransferRequest, TransferRequestHandler);
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return true;
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}
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public void Stop()
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{
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}
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#region Xfer System
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void RequestXferHandler(Packet packet, Agent agent)
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{
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RequestXferPacket request = (RequestXferPacket)packet;
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string filename = Utils.BytesToString(request.XferID.Filename);
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byte[] assetData;
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if (scene.TaskInventory.TryGetTaskFile(filename, out assetData))
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{
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SendXferPacketPacket xfer = new SendXferPacketPacket();
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xfer.XferID.ID = request.XferID.ID;
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if (assetData.Length < 1000)
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{
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xfer.XferID.Packet = 0x80000000;
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xfer.DataPacket.Data = new byte[assetData.Length + 4];
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Utils.IntToBytes(assetData.Length, xfer.DataPacket.Data, 0);
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Buffer.BlockCopy(assetData, 0, xfer.DataPacket.Data, 4, assetData.Length);
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scene.UDP.SendPacket(agent.ID, xfer, PacketCategory.Asset);
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Logger.DebugLog("Completed single packet xfer download of " + filename);
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}
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else
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{
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xfer.XferID.Packet = 0;
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xfer.DataPacket.Data = new byte[1000 + 4];
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Utils.IntToBytes(assetData.Length, xfer.DataPacket.Data, 0);
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Buffer.BlockCopy(assetData, 0, xfer.DataPacket.Data, 4, 1000);
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// We don't need the entire XferDownload class, just the asset data and the current packet number
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XferDownload download = new XferDownload();
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download.AssetData = assetData;
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download.PacketNum = 1;
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download.Filename = filename;
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lock (currentDownloads)
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currentDownloads[request.XferID.ID] = download;
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scene.UDP.SendPacket(agent.ID, xfer, PacketCategory.Asset);
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}
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}
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else
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{
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Logger.Log("Got a RequestXfer for an unknown file: " + filename, Helpers.LogLevel.Warning);
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}
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// lock (currentDownloads)
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}
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void ConfirmXferPacketHandler(Packet packet, Agent agent)
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{
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ConfirmXferPacketPacket confirm = (ConfirmXferPacketPacket)packet;
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XferDownload download;
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if (currentDownloads.TryGetValue(confirm.XferID.ID, out download))
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{
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// Send the next packet
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SendXferPacketPacket xfer = new SendXferPacketPacket();
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xfer.XferID.ID = confirm.XferID.ID;
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int bytesRemaining = (int)(download.AssetData.Length - (download.PacketNum * 1000));
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if (bytesRemaining > 1000)
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{
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xfer.DataPacket.Data = new byte[1000];
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Buffer.BlockCopy(download.AssetData, (int)download.PacketNum * 1000, xfer.DataPacket.Data, 0, 1000);
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xfer.XferID.Packet = download.PacketNum++;
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}
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else
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{
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// Last packet
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xfer.DataPacket.Data = new byte[bytesRemaining];
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Buffer.BlockCopy(download.AssetData, (int)download.PacketNum * 1000, xfer.DataPacket.Data, 0, bytesRemaining);
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xfer.XferID.Packet = download.PacketNum++ | 0x80000000;
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lock (currentDownloads)
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currentDownloads.Remove(confirm.XferID.ID);
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Logger.DebugLog("Completing xfer download for: " + download.Filename);
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}
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scene.UDP.SendPacket(agent.ID, xfer, PacketCategory.Asset);
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}
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}
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void AssetUploadRequestHandler(Packet packet, Agent agent)
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{
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AssetUploadRequestPacket request = (AssetUploadRequestPacket)packet;
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UUID assetID = UUID.Combine(request.AssetBlock.TransactionID, agent.SecureSessionID);
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// Check if the asset is small enough to fit in a single packet
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if (request.AssetBlock.AssetData.Length != 0)
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{
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// Create a new asset from the completed upload
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Asset asset = CreateAsset((AssetType)request.AssetBlock.Type, assetID, request.AssetBlock.AssetData);
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if (asset == null)
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{
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Logger.Log("Failed to create asset from uploaded data", Helpers.LogLevel.Warning);
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return;
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}
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Logger.DebugLog(String.Format("Storing uploaded asset {0} ({1})", assetID, asset.AssetType));
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asset.Temporary = (request.AssetBlock.Tempfile | request.AssetBlock.StoreLocal);
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// Store the asset
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scene.Server.Assets.StoreAsset(asset);
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// Send a success response
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AssetUploadCompletePacket complete = new AssetUploadCompletePacket();
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complete.AssetBlock.Success = true;
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complete.AssetBlock.Type = request.AssetBlock.Type;
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complete.AssetBlock.UUID = assetID;
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scene.UDP.SendPacket(agent.ID, complete, PacketCategory.Inventory);
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}
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else
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{
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// Create a new (empty) asset for the upload
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Asset asset = CreateAsset((AssetType)request.AssetBlock.Type, assetID, null);
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if (asset == null)
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{
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Logger.Log("Failed to create asset from uploaded data", Helpers.LogLevel.Warning);
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return;
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}
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Logger.DebugLog(String.Format("Starting upload for {0} ({1})", assetID, asset.AssetType));
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asset.Temporary = (request.AssetBlock.Tempfile | request.AssetBlock.StoreLocal);
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RequestXferPacket xfer = new RequestXferPacket();
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xfer.XferID.DeleteOnCompletion = request.AssetBlock.Tempfile;
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xfer.XferID.FilePath = 0;
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xfer.XferID.Filename = Utils.EmptyBytes;
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xfer.XferID.ID = request.AssetBlock.TransactionID.GetULong();
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xfer.XferID.UseBigPackets = false;
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xfer.XferID.VFileID = asset.AssetID;
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xfer.XferID.VFileType = request.AssetBlock.Type;
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// Add this asset to the current upload list
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lock (currentUploads)
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currentUploads[xfer.XferID.ID] = asset;
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scene.UDP.SendPacket(agent.ID, xfer, PacketCategory.Inventory);
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}
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}
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void SendXferPacketHandler(Packet packet, Agent agent)
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{
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SendXferPacketPacket xfer = (SendXferPacketPacket)packet;
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Asset asset;
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if (currentUploads.TryGetValue(xfer.XferID.ID, out asset))
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{
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if (asset.AssetData == null)
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{
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if (xfer.XferID.Packet != 0)
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{
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Logger.Log(String.Format("Received Xfer packet {0} before the first packet!",
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xfer.XferID.Packet), Helpers.LogLevel.Error);
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return;
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}
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uint size = Utils.BytesToUInt(xfer.DataPacket.Data);
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asset.AssetData = new byte[size];
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Buffer.BlockCopy(xfer.DataPacket.Data, 4, asset.AssetData, 0, xfer.DataPacket.Data.Length - 4);
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// Confirm the first upload packet
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ConfirmXferPacketPacket confirm = new ConfirmXferPacketPacket();
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confirm.XferID.ID = xfer.XferID.ID;
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confirm.XferID.Packet = xfer.XferID.Packet;
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scene.UDP.SendPacket(agent.ID, confirm, PacketCategory.Asset);
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}
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else
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{
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Buffer.BlockCopy(xfer.DataPacket.Data, 0, asset.AssetData, (int)xfer.XferID.Packet * 1000,
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xfer.DataPacket.Data.Length);
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// Confirm this upload packet
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ConfirmXferPacketPacket confirm = new ConfirmXferPacketPacket();
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confirm.XferID.ID = xfer.XferID.ID;
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confirm.XferID.Packet = xfer.XferID.Packet;
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scene.UDP.SendPacket(agent.ID, confirm, PacketCategory.Asset);
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if ((xfer.XferID.Packet & (uint)0x80000000) != 0)
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{
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// Asset upload finished
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Logger.DebugLog(String.Format("Completed Xfer upload of asset {0} ({1}", asset.AssetID, asset.AssetType));
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lock (currentUploads)
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currentUploads.Remove(xfer.XferID.ID);
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scene.Server.Assets.StoreAsset(asset);
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AssetUploadCompletePacket complete = new AssetUploadCompletePacket();
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complete.AssetBlock.Success = true;
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complete.AssetBlock.Type = (sbyte)asset.AssetType;
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complete.AssetBlock.UUID = asset.AssetID;
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scene.UDP.SendPacket(agent.ID, complete, PacketCategory.Asset);
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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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Logger.DebugLog("Received a SendXferPacket for an unknown upload");
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}
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}
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void AbortXferHandler(Packet packet, Agent agent)
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{
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AbortXferPacket abort = (AbortXferPacket)packet;
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lock (currentUploads)
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{
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if (currentUploads.ContainsKey(abort.XferID.ID))
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{
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Logger.DebugLog(String.Format("Aborting Xfer {0}, result: {1}", abort.XferID.ID,
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(TransferError)abort.XferID.Result));
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currentUploads.Remove(abort.XferID.ID);
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}
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else
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{
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Logger.DebugLog(String.Format("Received an AbortXfer for an unknown xfer {0}",
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abort.XferID.ID));
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}
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}
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}
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#endregion Xfer System
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#region Transfer System
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void TransferDownload(UUID agentID, UUID transferID, UUID assetID, AssetType type, Asset asset)
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{
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if (type == asset.AssetType)
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{
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Logger.DebugLog(String.Format("Transferring asset {0} ({1})", asset.AssetID, asset.AssetType));
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TransferInfoPacket response = new TransferInfoPacket();
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response.TransferInfo = new TransferInfoPacket.TransferInfoBlock();
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response.TransferInfo.TransferID = transferID;
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// Set the response channel type
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response.TransferInfo.ChannelType = (int)ChannelType.Asset;
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// Params
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response.TransferInfo.Params = new byte[20];
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assetID.ToBytes(response.TransferInfo.Params, 0);
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Utils.IntToBytes((int)type, response.TransferInfo.Params, 16);
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response.TransferInfo.Size = asset.AssetData.Length;
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response.TransferInfo.Status = (int)StatusCode.OK;
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response.TransferInfo.TargetType = (int)TargetType.Unknown; // Doesn't seem to be used by the client
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scene.UDP.SendPacket(agentID, response, PacketCategory.Asset);
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// Transfer system does not wait for ACKs, just sends all of the
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// packets for this transfer out
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const int MAX_CHUNK_SIZE = Settings.MAX_PACKET_SIZE - 100;
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int processedLength = 0;
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int packetNum = 0;
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while (processedLength < asset.AssetData.Length)
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{
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TransferPacketPacket transfer = new TransferPacketPacket();
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transfer.TransferData.ChannelType = (int)ChannelType.Asset;
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transfer.TransferData.TransferID = transferID;
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transfer.TransferData.Packet = packetNum++;
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int chunkSize = Math.Min(asset.AssetData.Length - processedLength, MAX_CHUNK_SIZE);
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transfer.TransferData.Data = new byte[chunkSize];
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Buffer.BlockCopy(asset.AssetData, processedLength, transfer.TransferData.Data, 0, chunkSize);
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processedLength += chunkSize;
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if (processedLength >= asset.AssetData.Length)
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transfer.TransferData.Status = (int)StatusCode.Done;
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else
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transfer.TransferData.Status = (int)StatusCode.OK;
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scene.UDP.SendPacket(agentID, transfer, PacketCategory.Asset);
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}
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}
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else
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{
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Logger.Log(String.Format("Request for asset {0} with type {1} does not match actual asset type {2}",
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assetID, type, asset.AssetType), Helpers.LogLevel.Warning);
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TransferNotFound(agentID, transferID, assetID, type);
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}
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}
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void TransferNotFound(UUID agentID, UUID transferID, UUID assetID, AssetType type)
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{
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Logger.Log("TransferNotFound for asset " + assetID + " with type " + type, Helpers.LogLevel.Info);
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TransferInfoPacket response = new TransferInfoPacket();
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response.TransferInfo = new TransferInfoPacket.TransferInfoBlock();
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response.TransferInfo.TransferID = transferID;
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// Set the response channel type
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response.TransferInfo.ChannelType = (int)ChannelType.Asset;
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// Params
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response.TransferInfo.Params = new byte[20];
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assetID.ToBytes(response.TransferInfo.Params, 0);
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Utils.IntToBytes((int)type, response.TransferInfo.Params, 16);
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response.TransferInfo.Size = 0;
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response.TransferInfo.Status = (int)StatusCode.UnknownSource;
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response.TransferInfo.TargetType = (int)TargetType.Unknown;
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scene.UDP.SendPacket(agentID, response, PacketCategory.Asset);
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}
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void TransferRequestHandler(Packet packet, Agent agent)
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{
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TransferRequestPacket request = (TransferRequestPacket)packet;
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ChannelType channel = (ChannelType)request.TransferInfo.ChannelType;
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SourceType source = (SourceType)request.TransferInfo.SourceType;
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if (channel == ChannelType.Asset)
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{
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if (source == SourceType.Asset)
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{
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// Parse the request
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UUID assetID = new UUID(request.TransferInfo.Params, 0);
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AssetType type = (AssetType)(sbyte)Utils.BytesToInt(request.TransferInfo.Params, 16);
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// Check if we have this asset
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Asset asset;
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if (scene.Server.Assets.TryGetAsset(assetID, out asset))
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TransferDownload(agent.ID, request.TransferInfo.TransferID, assetID, type, asset);
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else
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TransferNotFound(agent.ID, request.TransferInfo.TransferID, assetID, type);
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}
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else if (source == SourceType.SimInventoryItem)
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{
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UUID agentID = new UUID(request.TransferInfo.Params, 0);
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UUID sessionID = new UUID(request.TransferInfo.Params, 16);
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UUID ownerID = new UUID(request.TransferInfo.Params, 32);
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UUID taskID = new UUID(request.TransferInfo.Params, 48);
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UUID itemID = new UUID(request.TransferInfo.Params, 64);
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UUID assetID = new UUID(request.TransferInfo.Params, 80);
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AssetType type = (AssetType)(sbyte)Utils.BytesToInt(request.TransferInfo.Params, 96);
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//if (taskID != UUID.Zero) // Task (prim) inventory request
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//else // Agent inventory request
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// Check if we have this asset
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Asset asset;
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if (scene.Server.Assets.TryGetAsset(assetID, out asset))
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TransferDownload(agent.ID, request.TransferInfo.TransferID, assetID, type, asset);
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else
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TransferNotFound(agent.ID, request.TransferInfo.TransferID, assetID, type);
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}
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else if (source == SourceType.SimEstate)
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{
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UUID agentID = new UUID(request.TransferInfo.Params, 0);
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UUID sessionID = new UUID(request.TransferInfo.Params, 16);
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EstateAssetType type = (EstateAssetType)Utils.BytesToInt(request.TransferInfo.Params, 32);
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Logger.Log("Please implement estate asset transfers", Helpers.LogLevel.Warning);
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}
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else
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{
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Logger.Log(String.Format(
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"Received a TransferRequest that we don't know how to handle. Channel: {0}, Source: {1}",
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channel, source), Helpers.LogLevel.Warning);
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}
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}
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else
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{
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Logger.Log(String.Format(
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"Received a TransferRequest that we don't know how to handle. Channel: {0}, Source: {1}",
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channel, source), Helpers.LogLevel.Warning);
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}
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}
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#endregion Transfer System
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Asset CreateAsset(AssetType type, UUID assetID, byte[] data)
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{
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switch (type)
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{
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case AssetType.Bodypart:
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return new AssetBodypart(assetID, data);
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case AssetType.Clothing:
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return new AssetClothing(assetID, data);
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case AssetType.LSLBytecode:
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return new AssetScriptBinary(assetID, data);
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case AssetType.LSLText:
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return new AssetScriptText(assetID, data);
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case AssetType.Notecard:
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return new AssetNotecard(assetID, data);
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case AssetType.Texture:
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return new AssetTexture(assetID, data);
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case AssetType.Animation:
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return new AssetAnimation(assetID, data);
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case AssetType.CallingCard:
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case AssetType.Folder:
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case AssetType.Gesture:
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case AssetType.ImageJPEG:
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case AssetType.ImageTGA:
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case AssetType.Landmark:
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case AssetType.LostAndFoundFolder:
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case AssetType.Object:
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case AssetType.RootFolder:
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case AssetType.Simstate:
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case AssetType.SnapshotFolder:
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case AssetType.Sound:
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return new AssetSound(assetID, data);
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case AssetType.SoundWAV:
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case AssetType.TextureTGA:
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case AssetType.TrashFolder:
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case AssetType.Unknown:
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default:
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Logger.Log("Asset type " + type.ToString() + " not implemented!", Helpers.LogLevel.Warning);
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return null;
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}
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}
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}
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}
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