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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.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text;
using System.Timers;
using System.Xml;
using System.Xml.Serialization;
using log4net;
using Nini.Config;
using OpenMetaverse;
using OpenSim.Data;
using OpenSim.Framework;
using OpenSim.Services.Interfaces;
namespace OpenSim.OfflineIM
{
public class OfflineIMService : OfflineIMServiceBase, IOfflineIMService
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private const int MAX_IM = 25;
private XmlSerializer m_serializer;
private static bool m_Initialized = false;
public OfflineIMService(IConfigSource config)
: base(config)
{
m_serializer = new XmlSerializer(typeof(GridInstantMessage));
if (!m_Initialized)
{
m_Database.DeleteOld();
m_Initialized = true;
}
}
public List<GridInstantMessage> GetMessages(UUID principalID)
{
List<GridInstantMessage> ims = new List<GridInstantMessage>();
OfflineIMData[] messages = m_Database.Get("PrincipalID", principalID.ToString());
if (messages == null || (messages != null && messages.Length == 0))
return ims;
foreach (OfflineIMData m in messages)
{
using (MemoryStream mstream = new MemoryStream(Encoding.UTF8.GetBytes(m.Data["Message"])))
{
GridInstantMessage im = (GridInstantMessage)m_serializer.Deserialize(mstream);
ims.Add(im);
}
}
// Then, delete them
m_Database.Delete("PrincipalID", principalID.ToString());
return ims;
}
public bool StoreMessage(GridInstantMessage im, out string reason)
{
reason = string.Empty;
// TODO Check limits
UUID principalID = new UUID(im.toAgentID);
long count = m_Database.GetCount("PrincipalID", principalID.ToString());
if (count >= MAX_IM)
{
reason = "Number of offline IMs has maxed out";
return false;
}
string imXml = string.Empty;
using (MemoryStream mstream = new MemoryStream())
{
XmlWriterSettings settings = new XmlWriterSettings();
settings.Encoding = Encoding.UTF8;
using (XmlWriter writer = XmlWriter.Create(mstream, settings))
{
m_serializer.Serialize(writer, im);
writer.Flush();
mstream.Position = 0;
using (StreamReader sreader = new StreamReader(mstream))
{
imXml = sreader.ReadToEnd();
}
}
}
OfflineIMData data = new OfflineIMData();
data.PrincipalID = principalID;
data.Data = new Dictionary<string, string>();
data.Data["Message"] = imXml;
return m_Database.Store(data);
}
}
}
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