opensim/OpenSim/Server/Handlers/Map/MapGetServerConnector.cs

/*
 * 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
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.IO;
using System.Net;
using System.Reflection;

using Nini.Config;
using log4net;

using OpenSim.Server.Base;
using OpenSim.Services.Interfaces;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Server.Handlers.Base;

namespace OpenSim.Server.Handlers.MapImage
{
    public class MapGetServiceConnector : ServiceConnector
    {
//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        private IMapImageService m_MapService;

        private string m_ConfigName = "MapImageService";

        public MapGetServiceConnector(IConfigSource config, IHttpServer server, string configName) :
            base(config, server, configName)
        {
            IConfig serverConfig = config.Configs[m_ConfigName];
            if (serverConfig == null)
                throw new Exception(String.Format("No section {0} in config file", m_ConfigName));

            string gridService = serverConfig.GetString("LocalServiceModule",
                    String.Empty);

            if (gridService == String.Empty)
                throw new Exception("No LocalServiceModule in config file");

            Object[] args = new Object[] { config };
            m_MapService = ServerUtils.LoadPlugin<IMapImageService>(gridService, args);

            server.AddStreamHandler(new MapServerGetHandler(m_MapService));
        }
    }

    class MapServerGetHandler : BaseStreamHandler
    {
//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        private IMapImageService m_MapService;

        public MapServerGetHandler(IMapImageService service) :
                base("GET", "/map")
        {
            m_MapService = service;
        }

        public override byte[] Handle(string path, Stream request, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
        {
            byte[] result = new byte[0];

            string format = string.Empty;
            result = m_MapService.GetMapTile(path.Trim('/'), out format);
            if (result.Length > 0)
            {
                httpResponse.StatusCode = (int)HttpStatusCode.OK;
                if (format.Equals(".png"))
                    httpResponse.ContentType = "image/png";
                else if (format.Equals(".jpg") || format.Equals(".jpeg"))
                    httpResponse.ContentType = "image/jpeg";
            }
            else
            {
                httpResponse.StatusCode = (int)HttpStatusCode.NotFound;
                httpResponse.ContentType = "text/plain";
            }

            return result;
        }

    }
}