128 lines
5.2 KiB
C#
128 lines
5.2 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.IO;
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using System.Net;
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using OpenMetaverse;
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using OpenSim.Framework.Serialization;
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using OpenSim.Region.Framework.Scenes;
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namespace OpenSim.Region.CoreModules.World.Archiver
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{
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/// <summary>
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/// Helper methods for archive manipulation
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/// </summary>
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/// This is a separate class from ArchiveConstants because we need to bring in very OpenSim specific classes.
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public static class ArchiveHelpers
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{
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/// <summary>
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/// Create the filename used for objects in OpenSim Archives.
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/// </summary>
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/// <param name="objectName"></param>
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/// <param name="uuid"></param>
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/// <param name="pos"></param>
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/// <returns></returns>
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public static string CreateObjectFilename(SceneObjectGroup sog)
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{
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return ArchiveConstants.CreateOarObjectFilename(sog.Name, sog.UUID, sog.AbsolutePosition);
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}
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/// <summary>
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/// Create the path used to store an object in an OpenSim Archive.
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/// </summary>
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/// <param name="objectName"></param>
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/// <param name="uuid"></param>
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/// <param name="pos"></param>
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/// <returns></returns>
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public static string CreateObjectPath(SceneObjectGroup sog)
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{
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return ArchiveConstants.CreateOarObjectPath(sog.Name, sog.UUID, sog.AbsolutePosition);
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}
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/// <summary>
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/// Resolve path to a working FileStream
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/// </summary>
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/// <param name="path"></param>
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/// <returns></returns>
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public static Stream GetStream(string path)
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{
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if (File.Exists(path))
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{
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return new FileStream(path, FileMode.Open, FileAccess.Read);
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}
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else
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{
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try
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{
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Uri uri = new Uri(path);
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if (uri.Scheme == "file")
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{
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return new FileStream(uri.AbsolutePath, FileMode.Open, FileAccess.Read);
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}
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else
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{
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if (uri.Scheme != "http")
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throw new Exception(String.Format("Unsupported URI scheme ({0})", path));
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// OK, now we know we have an HTTP URI to work with
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return URIFetch(uri);
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}
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}
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catch (UriFormatException)
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{
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// In many cases the user will put in a plain old filename that cannot be found so assume that
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// this is the problem rather than confusing the issue with a UriFormatException
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throw new Exception(String.Format("Cannot find file {0}", path));
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}
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}
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}
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public static Stream URIFetch(Uri uri)
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{
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
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// request.Credentials = credentials;
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request.ContentLength = 0;
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request.KeepAlive = false;
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WebResponse response = request.GetResponse();
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Stream file = response.GetResponseStream();
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// justincc: gonna ignore the content type for now and just try anything
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//if (response.ContentType != "application/x-oar")
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// throw new Exception(String.Format("{0} does not identify an OAR file", uri.ToString()));
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if (response.ContentLength == 0)
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throw new Exception(String.Format("{0} returned an empty file", uri.ToString()));
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// return new BufferedStream(file, (int) response.ContentLength);
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return new BufferedStream(file, 1000000);
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}
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}
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} |