46ee60f13b
git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@321 52acb1d6-8a22-11de-b505-999d5b087335
339 lines
12 KiB
C#
339 lines
12 KiB
C#
/*
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* Copyright (c) 2006, Second Life Reverse Engineering Team
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* All rights reserved.
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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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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Neither the name of the Second Life Reverse Engineering Team nor the names
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* of its contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections;
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using libsecondlife;
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using libsecondlife.InventorySystem;
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using libsecondlife.Packets;
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namespace libsecondlife.AssetSystem
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{
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/// <summary>
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/// Summary description for AssetManager.
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/// </summary>
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public class AssetManager
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{
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private const bool DEBUG_PACKETS = true;
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public const int SINK_FEE_IMAGE = 1;
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private SecondLife slClient;
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private TransferRequest curUploadRequest = null;
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private Hashtable htDownloadRequests = new Hashtable();
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private class TransferRequest
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{
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public bool Completed;
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public bool Status;
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public string StatusMsg;
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public int Size;
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public int Received;
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public uint LastPacketTime;
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public uint LastPacketNumSent;
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public byte[] AssetData;
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public LLUUID TransactionID;
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public LLUUID AssetID;
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}
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/// <summary>
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/// </summary>
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/// <param name="client"></param>
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internal AssetManager(SecondLife client)
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{
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slClient = client;
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// Used to upload small assets, or as an initial start packet for large transfers
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PacketCallback AssetUploadCompleteCallback = new PacketCallback(AssetUploadCompleteCallbackHandler);
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slClient.Network.RegisterCallback(PacketType.AssetUploadComplete, AssetUploadCompleteCallback);
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// Transfer Packets for downloading large assets
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PacketCallback TransferInfoCallback = new PacketCallback(TransferInfoCallbackHandler);
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slClient.Network.RegisterCallback(PacketType.TransferInfo, TransferInfoCallback);
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PacketCallback TransferPacketCallback = new PacketCallback(TransferPacketCallbackHandler);
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slClient.Network.RegisterCallback(PacketType.TransferPacket, TransferPacketCallback);
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// XFer packets for uploading large assets
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PacketCallback ConfirmXferPacketCallback = new PacketCallback(ConfirmXferPacketCallbackHandler);
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slClient.Network.RegisterCallback(PacketType.ConfirmXferPacket, ConfirmXferPacketCallback);
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PacketCallback RequestXferCallback = new PacketCallback(RequestXferCallbackHandler);
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slClient.Network.RegisterCallback(PacketType.RequestXfer, RequestXferCallback);
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}
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/// <summary>
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/// Handle the appropriate sink fee assoiacted with an asset upload
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/// </summary>
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/// <param name="sinkType"></param>
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public void SinkFee(int sinkType)
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{
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switch( sinkType )
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{
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case SINK_FEE_IMAGE:
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slClient.Avatar.GiveMoney( new LLUUID(), 10, "Image Upload" );
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break;
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default:
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throw new Exception("AssetManager: Unknown sinktype (" + sinkType + ")");
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}
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}
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/// <summary>
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/// Upload an asset to Second Life
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/// </summary>
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/// <param name="asset">The asset to be uploaded</param>
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/// <returns>The Asset ID of the completed upload</returns>
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public LLUUID UploadAsset(Asset asset)
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{
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if (curUploadRequest != null)
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{
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throw new Exception("An existing asset upload is currently in-progress.");
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}
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Packet packet;
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curUploadRequest = new TransferRequest();
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curUploadRequest.Completed = false;
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curUploadRequest.TransactionID = LLUUID.GenerateUUID();
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if( asset.AssetData.Length > 500 )
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{
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packet = AssetPacketHelpers.AssetUploadRequestHeaderOnly(asset, curUploadRequest.TransactionID);
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slClient.Network.SendPacket(packet);
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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curUploadRequest.AssetData = asset.AssetData;
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}
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else
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{
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packet = AssetPacketHelpers.AssetUploadRequest(asset, curUploadRequest.TransactionID);
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slClient.Network.SendPacket(packet);
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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}
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while( curUploadRequest.Completed == false )
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{
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slClient.Tick();
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}
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if (curUploadRequest.Status == false)
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{
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throw new Exception(curUploadRequest.StatusMsg);
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} else {
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if( asset.Type == Asset.ASSET_TYPE_IMAGE )
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{
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SinkFee( SINK_FEE_IMAGE );
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}
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asset.AssetID = curUploadRequest.AssetID;
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return asset.AssetID;
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}
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}
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/// <summary>
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/// Get the Asset data for an item
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/// </summary>
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/// <param name="item"></param>
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public void GetInventoryAsset( InventoryItem item )
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{
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LLUUID TransferID = LLUUID.GenerateUUID();
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TransferRequest tr = new TransferRequest();
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tr.Completed = false;
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tr.Size = int.MaxValue; // Number of bytes expected
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tr.Received = 0; // Number of bytes received
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tr.LastPacketTime = Helpers.GetUnixTime(); // last time we recevied a packet for this request
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htDownloadRequests[TransferID] = tr;
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Packet packet = AssetPacketHelpers.TransferRequest(slClient.Network.SessionID, slClient.Network.AgentID, TransferID, item );
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slClient.Network.SendPacket(packet);
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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while( tr.Completed == false )
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{
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slClient.Tick();
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}
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item.SetAssetData( tr.AssetData );
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}
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private void AssetUploadCompleteCallbackHandler(Packet packet, Simulator simulator)
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{
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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Packets.AssetUploadCompletePacket reply = (AssetUploadCompletePacket)packet;
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curUploadRequest.AssetID = reply.AssetBlock.UUID;
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bool Success = reply.AssetBlock.Success;
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if( Success )
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{
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curUploadRequest.Completed = true;
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curUploadRequest.Status = true;
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curUploadRequest.StatusMsg = "Success";
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}
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else
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{
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curUploadRequest.Completed = true;
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curUploadRequest.Status = false;
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curUploadRequest.StatusMsg = "Server returned failed";
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}
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}
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private void RequestXferCallbackHandler(Packet packet, Simulator simulator)
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{
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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RequestXferPacket reply = (RequestXferPacket)packet;
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ulong XferID = reply.XferID.ID;
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LLUUID AssetID = reply.XferID.VFileID;
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// Setup to send the first packet
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curUploadRequest.LastPacketNumSent = 0;
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byte[] packetData = new byte[1004];
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// Prefix the first Xfer packet with the data length
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// FIXME: Apply endianness patch
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Array.Copy(BitConverter.GetBytes((int)curUploadRequest.AssetData.Length), 0, packetData, 0, 4);
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Array.Copy(curUploadRequest.AssetData, 0, packetData, 4, 1000);
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packet = AssetPacketHelpers.SendXferPacket(XferID, packetData, 0);
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slClient.Network.SendPacket(packet);
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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}
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private void ConfirmXferPacketCallbackHandler(Packet packet, Simulator simulator)
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{
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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ConfirmXferPacketPacket reply = (ConfirmXferPacketPacket)packet;
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ulong XferID = reply.XferID.ID;
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uint PacketNumConfirmed = reply.XferID.Packet;
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if (PacketNumConfirmed == curUploadRequest.LastPacketNumSent)
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{
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curUploadRequest.LastPacketNumSent += 1;
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uint i = curUploadRequest.LastPacketNumSent;
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int numPackets = curUploadRequest.AssetData.Length / 1000;
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if (i < numPackets)
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{
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byte[] packetData = new byte[1000];
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Array.Copy(curUploadRequest.AssetData, i * 1000, packetData, 0, 1000);
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packet = AssetPacketHelpers.SendXferPacket(XferID, packetData, i);
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slClient.Network.SendPacket(packet);
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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}
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else
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{
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// The last packet has to be handled slightly differently
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int lastLen = curUploadRequest.AssetData.Length - (numPackets * 1000);
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byte[] packetData = new byte[lastLen];
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Array.Copy(curUploadRequest.AssetData, numPackets * 1000, packetData, 0, lastLen);
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uint lastPacket = (uint)int.MaxValue + (uint)numPackets + (uint)1;
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packet = AssetPacketHelpers.SendXferPacket(XferID, packetData, lastPacket);
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slClient.Network.SendPacket(packet);
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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}
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} else {
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throw new Exception("Something is wrong with uploading assets, a confirmation came in for a packet we didn't send.");
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}
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}
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private void TransferInfoCallbackHandler(Packet packet, Simulator simulator)
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{
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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TransferInfoPacket reply = (TransferInfoPacket)packet;
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LLUUID TransferID = reply.TransferInfo.TransferID;
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int Size = reply.TransferInfo.Size;
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int Status = reply.TransferInfo.Status;
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// Lookup the request for this packet
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TransferRequest tr = (TransferRequest)htDownloadRequests[TransferID];
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if (tr == null)
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{
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return;
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}
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// Mark it as either not found or update the request information
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if (Status == -2)
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{
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tr.Completed = true;
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tr.Status = false;
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tr.StatusMsg = "Asset Status -2 :: Likely Status Not Found";
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tr.Size = 1;
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tr.AssetData = new byte[1];
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}
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else
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{
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tr.Size = Size;
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tr.AssetData = new byte[Size];
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}
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}
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private void TransferPacketCallbackHandler(Packet packet, Simulator simulator)
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{
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if (DEBUG_PACKETS) { Console.WriteLine(packet); }
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TransferPacketPacket reply = (TransferPacketPacket)packet;
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LLUUID TransferID = reply.TransferData.TransferID;
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byte[] Data = reply.TransferData.Data;
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// Append data to data received.
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TransferRequest tr = (TransferRequest)htDownloadRequests[TransferID];
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if (tr == null)
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{
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return;
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}
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Array.Copy(Data, 0, tr.AssetData, tr.Received, Data.Length);
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tr.Received += Data.Length;
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// If we've gotten all the data, mark it completed.
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if (tr.Received >= tr.Size)
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{
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tr.Completed = true;
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}
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}
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}
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}
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