/* * 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.Text; namespace OpenSim.Framework.Communications.Cache { public class AuthedSessionCache { public class CacheData { private static readonly DateTime UNIX_EPOCH = new DateTime(1970, 1, 1); private string m_session_id; private string m_agent_id; private int m_expire; private int get_current_unix_time() { return (int)(DateTime.UtcNow - UNIX_EPOCH).TotalSeconds; } public CacheData(string sid, string aid) { m_session_id = sid; m_agent_id = aid; m_expire = get_current_unix_time() + DEFAULT_LIFETIME; } public CacheData(string sid, string aid, int time_now) { m_session_id = sid; m_agent_id = aid; m_expire = time_now + DEFAULT_LIFETIME; } public string SessionID { get { return m_session_id; } set { m_session_id = value; } } public string AgentID { get { return m_agent_id; } set { m_agent_id = value; } } public bool isExpired { get { return m_expire < get_current_unix_time(); } } public void Renew() { m_expire = get_current_unix_time() + DEFAULT_LIFETIME; } } private static readonly int DEFAULT_LIFETIME = 30; private Dictionary<string, CacheData> m_authed_sessions = new Dictionary<string,CacheData>(); // private int m_session_lifetime = DEFAULT_LIFETIME; public AuthedSessionCache() { // m_session_lifetime = DEFAULT_LIFETIME; } public AuthedSessionCache(int timeout) { // m_session_lifetime = timeout; } public CacheData getCachedSession(string session_id, string agent_id) { CacheData ret = null; lock (m_authed_sessions) { if (m_authed_sessions.ContainsKey(session_id)) { CacheData cached_session = m_authed_sessions[session_id]; if (!cached_session.isExpired && cached_session.AgentID == agent_id) { ret = m_authed_sessions[session_id]; // auto renew m_authed_sessions[session_id].Renew(); } } } return ret; } public void Add(string session_id, string agent_id) { CacheData data = new CacheData(session_id, agent_id); lock (m_authed_sessions) { if (m_authed_sessions.ContainsKey(session_id)) { m_authed_sessions[session_id] = data; } else { m_authed_sessions.Add(session_id, data); } } } } }