From 0f3314c04ccd07e0ff9b5be69903b0a72dd73115 Mon Sep 17 00:00:00 2001 From: John Hurliman Date: Thu, 8 Apr 2010 15:00:01 -0700 Subject: Backported GetTextureModule and IAssetService.GetCached() --- .../CoreModules/Avatar/Assets/GetTextureModule.cs | 220 +++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 OpenSim/Region/CoreModules/Avatar/Assets/GetTextureModule.cs (limited to 'OpenSim/Region/CoreModules/Avatar/Assets') diff --git a/OpenSim/Region/CoreModules/Avatar/Assets/GetTextureModule.cs b/OpenSim/Region/CoreModules/Avatar/Assets/GetTextureModule.cs new file mode 100644 index 0000000..53d2cef --- /dev/null +++ b/OpenSim/Region/CoreModules/Avatar/Assets/GetTextureModule.cs @@ -0,0 +1,220 @@ +/* + * Copyright (c) Contributors, http://opensimulator.org/ + * See CONTRIBUTORS.TXT for a full list of copyright holders. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the OpenSimulator Project nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +using System; +using System.Collections; +using System.Collections.Specialized; +using System.Reflection; +using System.IO; +using System.Web; +using log4net; +using Nini.Config; +using OpenMetaverse; +using OpenMetaverse.StructuredData; +using OpenSim.Framework; +using OpenSim.Framework.Servers; +using OpenSim.Framework.Servers.HttpServer; +using OpenSim.Region.Framework.Interfaces; +using OpenSim.Region.Framework.Scenes; +using OpenSim.Services.Interfaces; +using Caps = OpenSim.Framework.Capabilities.Caps; + +namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps +{ + #region Stream Handler + + public delegate byte[] StreamHandlerCallback(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse); + + public class StreamHandler : BaseStreamHandler + { + StreamHandlerCallback m_callback; + + public StreamHandler(string httpMethod, string path, StreamHandlerCallback callback) + : base(httpMethod, path) + { + m_callback = callback; + } + + public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse) + { + return m_callback(path, request, httpRequest, httpResponse); + } + } + + #endregion Stream Handler + + public class GetTextureModule : IRegionModule + { + private static readonly ILog m_log = + LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); + private Scene m_scene; + private IAssetService m_assetService; + + #region IRegionModule Members + + public void Initialise(Scene pScene, IConfigSource pSource) + { + m_scene = pScene; + } + + public void PostInitialise() + { + m_assetService = m_scene.RequestModuleInterface(); + m_scene.EventManager.OnRegisterCaps += RegisterCaps; + } + + public void Close() { } + + public string Name { get { return "GetTextureModule"; } } + public bool IsSharedModule { get { return false; } } + + public void RegisterCaps(UUID agentID, Caps caps) + { + UUID capID = UUID.Random(); + + m_log.Info("[GETTEXTURE]: /CAPS/" + capID); + caps.RegisterHandler("GetTexture", new StreamHandler("GET", "/CAPS/" + capID, ProcessGetTexture)); + } + + #endregion + + private byte[] ProcessGetTexture(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse) + { + // TODO: Change this to a config option + const string REDIRECT_URL = null; + + // Try to parse the texture ID from the request URL + NameValueCollection query = HttpUtility.ParseQueryString(httpRequest.Url.Query); + string textureStr = query.GetOne("texture_id"); + + if (m_assetService == null) + { + m_log.Error("[GETTEXTURE]: Cannot fetch texture " + textureStr + " without an asset service"); + httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound; + return null; + } + + UUID textureID; + if (!String.IsNullOrEmpty(textureStr) && UUID.TryParse(textureStr, out textureID)) + { + AssetBase texture; + + if (!String.IsNullOrEmpty(REDIRECT_URL)) + { + // Only try to fetch locally cached textures. Misses are redirected + texture = m_assetService.GetCached(textureID.ToString()); + + if (texture != null) + { + SendTexture(httpRequest, httpResponse, texture); + } + else + { + string textureUrl = REDIRECT_URL + textureID.ToString(); + m_log.Debug("[GETTEXTURE]: Redirecting texture request to " + textureUrl); + httpResponse.RedirectLocation = textureUrl; + } + } + else + { + // Fetch locally or remotely. Misses return a 404 + texture = m_assetService.Get(textureID.ToString()); + + if (texture != null) + { + SendTexture(httpRequest, httpResponse, texture); + } + else + { + m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found"); + httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound; + } + } + } + else + { + m_log.Warn("[GETTEXTURE]: Failed to parse a texture_id from GetTexture request: " + httpRequest.Url); + } + + httpResponse.Send(); + return null; + } + + private void SendTexture(OSHttpRequest request, OSHttpResponse response, AssetBase texture) + { + string range = request.Headers.GetOne("Range"); + if (!String.IsNullOrEmpty(range)) + { + // Range request + int start, end; + if (TryParseRange(range, out start, out end)) + { + end = Utils.Clamp(end, 1, texture.Data.Length); + start = Utils.Clamp(start, 0, end - 1); + + m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID); + + if (end - start < texture.Data.Length) + response.StatusCode = (int)System.Net.HttpStatusCode.PartialContent; + + response.ContentLength = end - start; + response.ContentType = texture.Metadata.ContentType; + + response.Body.Write(texture.Data, start, end - start); + } + else + { + m_log.Warn("Malformed Range header: " + range); + response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest; + } + } + else + { + // Full content request + response.ContentLength = texture.Data.Length; + response.ContentType = texture.Metadata.ContentType; + response.Body.Write(texture.Data, 0, texture.Data.Length); + } + } + + private bool TryParseRange(string header, out int start, out int end) + { + if (header.StartsWith("bytes=")) + { + string[] rangeValues = header.Substring(6).Split('-'); + if (rangeValues.Length == 2) + { + if (Int32.TryParse(rangeValues[0], out start) && Int32.TryParse(rangeValues[1], out end)) + return true; + } + } + + start = end = 0; + return false; + } + } +} -- cgit v1.1