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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.IO;
using System.Net;
using System.Reflection;
using System.Xml;
using log4net;
using Nini.Config;
using OpenSim.Framework;
namespace OpenSim.ApplicationPlugins.LoadRegions
{
public class RegionLoaderWebServer : IRegionLoader
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private IConfigSource m_configSource;
public void SetIniConfigSource(IConfigSource configSource)
{
m_configSource = configSource;
}
public RegionInfo[] LoadRegions()
{
int tries = 3;
int wait = 2000;
if (m_configSource == null)
{
m_log.Error("[WEBLOADER]: Unable to load configuration source!");
return null;
}
else
{
IConfig startupConfig = (IConfig)m_configSource.Configs["Startup"];
string url = startupConfig.GetString("regionload_webserver_url", String.Empty).Trim();
bool allowRegionless = startupConfig.GetBoolean("allow_regionless", false);
if (url == String.Empty)
{
m_log.Error("[WEBLOADER]: Unable to load webserver URL - URL was empty.");
return null;
}
else
{
while (tries > 0)
{
RegionInfo[] regionInfos = new RegionInfo[] { };
int regionCount = 0;
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Timeout = 30000; //30 Second Timeout
m_log.DebugFormat("[WEBLOADER]: Sending download request to {0}", url);
try
{
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
m_log.Debug("[WEBLOADER]: Downloading region information...");
StreamReader reader = new StreamReader(webResponse.GetResponseStream());
string xmlSource = String.Empty;
string tempStr = reader.ReadLine();
while (tempStr != null)
{
xmlSource = xmlSource + tempStr;
tempStr = reader.ReadLine();
}
m_log.Debug("[WEBLOADER]: Done downloading region information from server. Total Bytes: " +
xmlSource.Length);
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xmlSource);
if (xmlDoc.FirstChild.Name == "Nini")
{
regionCount = xmlDoc.FirstChild.ChildNodes.Count;
if (regionCount > 0)
{
regionInfos = new RegionInfo[regionCount];
int i;
for (i = 0; i < xmlDoc.FirstChild.ChildNodes.Count; i++)
{
m_log.Debug(xmlDoc.FirstChild.ChildNodes[i].OuterXml);
regionInfos[i] =
new RegionInfo("REGION CONFIG #" + (i + 1), xmlDoc.FirstChild.ChildNodes[i], false, m_configSource);
}
}
}
}
catch (WebException ex)
{
if (((HttpWebResponse)ex.Response).StatusCode == HttpStatusCode.NotFound)
{
if (!allowRegionless)
throw ex;
}
else
throw ex;
}
if (regionCount > 0 | allowRegionless)
return regionInfos;
m_log.Debug("[WEBLOADER]: Request yielded no regions.");
tries--;
if (tries > 0)
{
m_log.Debug("[WEBLOADER]: Retrying");
System.Threading.Thread.Sleep(wait);
}
}
m_log.Error("[WEBLOADER]: No region configs were available.");
return null;
}
}
}
}
}
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