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- /*
- * 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.Drawing;
- using System.IO;
- using System.Net;
- using Nini.Config;
- using OpenMetaverse;
- using OpenMetaverse.Imaging;
- using OpenSim.Framework;
- using OpenSim.Region.CoreModules.Scripting.DynamicTexture;
- using OpenSim.Region.Framework.Interfaces;
- using OpenSim.Region.Framework.Scenes;
- using log4net;
- using System.Reflection;
- using Mono.Addins;
- namespace OpenSim.Region.CoreModules.Scripting.LoadImageURL
- {
- [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "LoadImageURLModule")]
- public class LoadImageURLModule : ISharedRegionModule, IDynamicTextureRender
- {
- private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
- private string m_name = "LoadImageURL";
- private Scene m_scene;
- private IDynamicTextureManager m_textureManager;
- private OutboundUrlFilter m_outboundUrlFilter;
- private string m_proxyurl = "";
- private string m_proxyexcepts = "";
- #region IDynamicTextureRender Members
- public string GetName()
- {
- return m_name;
- }
- public string GetContentType()
- {
- return ("image");
- }
- public bool SupportsAsynchronous()
- {
- return true;
- }
- // public bool AlwaysIdenticalConversion(string bodyData, string extraParams)
- // {
- // // We don't support conversion of body data.
- // return false;
- // }
- public IDynamicTexture ConvertUrl(string url, string extraParams)
- {
- return null;
- }
- public IDynamicTexture ConvertData(string bodyData, string extraParams)
- {
- return null;
- }
- public bool AsyncConvertUrl(UUID id, string url, string extraParams)
- {
- return MakeHttpRequest(url, id);
- }
- public bool AsyncConvertData(UUID id, string bodyData, string extraParams)
- {
- return false;
- }
- public void GetDrawStringSize(string text, string fontName, int fontSize,
- out double xSize, out double ySize)
- {
- xSize = 0;
- ySize = 0;
- }
- #endregion
- #region ISharedRegionModule Members
- public void Initialise(IConfigSource config)
- {
- m_outboundUrlFilter = new OutboundUrlFilter("Script dynamic texture image module", config);
- m_proxyurl = config.Configs["Startup"].GetString("HttpProxy");
- m_proxyexcepts = config.Configs["Startup"].GetString("HttpProxyExceptions");
- }
- public void PostInitialise()
- {
- }
- public void AddRegion(Scene scene)
- {
- if (m_scene == null)
- m_scene = scene;
- }
- public void RemoveRegion(Scene scene)
- {
- }
- public void RegionLoaded(Scene scene)
- {
- if (m_textureManager == null && m_scene == scene)
- {
- m_textureManager = m_scene.RequestModuleInterface<IDynamicTextureManager>();
- if (m_textureManager != null)
- {
- m_textureManager.RegisterRender(GetContentType(), this);
- }
- }
- }
- public void Close()
- {
- }
- public string Name
- {
- get { return m_name; }
- }
- public Type ReplaceableInterface
- {
- get { return null; }
- }
- #endregion
- private bool MakeHttpRequest(string url, UUID requestID)
- {
- if (!m_outboundUrlFilter.CheckAllowed(new Uri(url)))
- return false;
- HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
- request.AllowAutoRedirect = false;
- if (!string.IsNullOrEmpty(m_proxyurl))
- {
- if (!string.IsNullOrEmpty(m_proxyexcepts))
- {
- string[] elist = m_proxyexcepts.Split(';');
- request.Proxy = new WebProxy(m_proxyurl, true, elist);
- }
- else
- {
- request.Proxy = new WebProxy(m_proxyurl, true);
- }
- }
- RequestState state = new RequestState(request, requestID);
- // IAsyncResult result = request.BeginGetResponse(new AsyncCallback(HttpRequestReturn), state);
- request.BeginGetResponse(new AsyncCallback(HttpRequestReturn), state);
- TimeSpan t = (DateTime.UtcNow - new DateTime(1970, 1, 1));
- state.TimeOfRequest = (int) t.TotalSeconds;
- return true;
- }
- private void HttpRequestReturn(IAsyncResult result)
- {
- if (m_textureManager == null)
- {
- m_log.WarnFormat("[LOADIMAGEURLMODULE]: No texture manager. Can't function.");
- return;
- }
- RequestState state = (RequestState) result.AsyncState;
- WebRequest request = (WebRequest) state.Request;
- Stream stream = null;
- byte[] imageJ2000 = new byte[0];
- Size newSize = new Size(0, 0);
- HttpWebResponse response = null;
- try
- {
- response = (HttpWebResponse)request.EndGetResponse(result);
- if (response != null && response.StatusCode == HttpStatusCode.OK)
- {
- stream = response.GetResponseStream();
- if (stream != null)
- {
- try
- {
- using(Bitmap image = new Bitmap(stream))
- {
- // TODO: make this a bit less hard coded
- if((image.Height < 64) && (image.Width < 64))
- {
- newSize.Width = 32;
- newSize.Height = 32;
- }
- else if((image.Height < 128) && (image.Width < 128))
- {
- newSize.Width = 64;
- newSize.Height = 64;
- }
- else if((image.Height < 256) && (image.Width < 256))
- {
- newSize.Width = 128;
- newSize.Height = 128;
- }
- else if((image.Height < 512 && image.Width < 512))
- {
- newSize.Width = 256;
- newSize.Height = 256;
- }
- else if((image.Height < 1024 && image.Width < 1024))
- {
- newSize.Width = 512;
- newSize.Height = 512;
- }
- else
- {
- newSize.Width = 1024;
- newSize.Height = 1024;
- }
- if(newSize.Width != image.Width || newSize.Height != image.Height)
- {
- using(Bitmap resize = new Bitmap(image, newSize))
- imageJ2000 = OpenJPEG.EncodeFromImage(resize, false);
- }
- else
- imageJ2000 = OpenJPEG.EncodeFromImage(image, false);
- }
- }
- catch (Exception)
- {
- m_log.Error("[LOADIMAGEURLMODULE]: OpenJpeg Conversion Failed. Empty byte data returned!");
- }
- }
- else
- {
- m_log.WarnFormat("[LOADIMAGEURLMODULE] No data returned");
- }
- }
- }
- catch (WebException)
- {
- }
- catch (Exception e)
- {
- m_log.ErrorFormat("[LOADIMAGEURLMODULE]: unexpected exception {0}", e.Message);
- }
- finally
- {
- if (stream != null)
- stream.Close();
- if (response != null)
- {
- if (response.StatusCode == HttpStatusCode.MovedPermanently
- || response.StatusCode == HttpStatusCode.Found
- || response.StatusCode == HttpStatusCode.SeeOther
- || response.StatusCode == HttpStatusCode.TemporaryRedirect)
- {
- string redirectedUrl = response.Headers["Location"];
- MakeHttpRequest(redirectedUrl, state.RequestID);
- }
- else
- {
- m_log.DebugFormat("[LOADIMAGEURLMODULE]: Returning {0} bytes of image data for request {1}",
- imageJ2000.Length, state.RequestID);
- m_textureManager.ReturnData(
- state.RequestID,
- new OpenSim.Region.CoreModules.Scripting.DynamicTexture.DynamicTexture(
- request.RequestUri, null, imageJ2000, newSize, false));
- }
- response.Close();
- }
- }
- }
- #region Nested type: RequestState
- public class RequestState
- {
- public HttpWebRequest Request = null;
- public UUID RequestID = UUID.Zero;
- public int TimeOfRequest = 0;
- public RequestState(HttpWebRequest request, UUID requestID)
- {
- Request = request;
- RequestID = requestID;
- }
- }
- #endregion
- }
- }
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