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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.Net;
using System.Reflection;
using OpenSim.Framework;
using OpenSim.Services.Connectors.Hypergrid;
using OpenSim.Services.Interfaces;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
using OpenSim.Server.Base;
using OpenMetaverse;
using log4net;
using Nini.Config;
namespace OpenSim.Services.HypergridService
{
/// <summary>
/// This service is for HG1.5 only, to make up for the fact that clients don't
/// keep any private information in themselves, and that their 'home service'
/// needs to do it for them.
/// Once we have better clients, this shouldn't be needed.
/// </summary>
public class UserAgentService : IUserAgentService
{
private static readonly ILog m_log =
LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType);
// This will need to go into a DB table
static Dictionary<UUID, TravelingAgentInfo> m_TravelingAgents = new Dictionary<UUID, TravelingAgentInfo>();
static bool m_Initialized = false;
protected static IPresenceService m_PresenceService;
protected static IGridService m_GridService;
protected static GatekeeperServiceConnector m_GatekeeperConnector;
public UserAgentService(IConfigSource config)
{
if (!m_Initialized)
{
m_log.DebugFormat("[HOME USERS SECURITY]: Starting...");
IConfig serverConfig = config.Configs["UserAgentService"];
if (serverConfig == null)
throw new Exception(String.Format("No section UserAgentService in config file"));
string gridService = serverConfig.GetString("GridService", String.Empty);
string presenceService = serverConfig.GetString("PresenceService", String.Empty);
if (gridService == string.Empty || presenceService == string.Empty)
throw new Exception(String.Format("Incomplete specifications, UserAgent Service cannot function."));
Object[] args = new Object[] { config };
m_GridService = ServerUtils.LoadPlugin<IGridService>(gridService, args);
m_PresenceService = ServerUtils.LoadPlugin<IPresenceService>(presenceService, args);
m_GatekeeperConnector = new GatekeeperServiceConnector();
m_Initialized = true;
}
}
public GridRegion GetHomeRegion(UUID userID, out Vector3 position, out Vector3 lookAt)
{
position = new Vector3(128, 128, 0); lookAt = Vector3.UnitY;
m_log.DebugFormat("[USER AGENT SERVICE]: Request to get home region of user {0}", userID);
GridRegion home = null;
PresenceInfo[] presences = m_PresenceService.GetAgents(new string[] { userID.ToString() });
if (presences != null && presences.Length > 0)
{
UUID homeID = presences[0].HomeRegionID;
if (homeID != UUID.Zero)
{
home = m_GridService.GetRegionByUUID(UUID.Zero, homeID);
position = presences[0].HomePosition;
lookAt = presences[0].HomeLookAt;
}
if (home == null)
{
List<GridRegion> defs = m_GridService.GetDefaultRegions(UUID.Zero);
if (defs != null && defs.Count > 0)
home = defs[0];
}
}
return home;
}
public bool LoginAgentToGrid(AgentCircuitData agentCircuit, GridRegion gatekeeper, GridRegion finalDestination, out string reason)
{
m_log.DebugFormat("[USER AGENT SERVICE]: Request to login user {0} {1} to grid {2}",
agentCircuit.firstname, agentCircuit.lastname, gatekeeper.ExternalHostName +":"+ gatekeeper.HttpPort);
// Take the IP address + port of the gatekeeper (reg) plus the info of finalDestination
GridRegion region = new GridRegion(gatekeeper);
region.RegionName = finalDestination.RegionName;
region.RegionID = finalDestination.RegionID;
region.RegionLocX = finalDestination.RegionLocX;
region.RegionLocY = finalDestination.RegionLocY;
// Generate a new service session
agentCircuit.ServiceSessionID = "http://" + region.ExternalHostName + ":" + region.HttpPort + ";" + UUID.Random();
TravelingAgentInfo old = UpdateTravelInfo(agentCircuit, region);
bool success = m_GatekeeperConnector.CreateAgent(region, agentCircuit, (uint)Constants.TeleportFlags.ViaLogin, out reason);
if (!success)
{
m_log.DebugFormat("[USER AGENT SERVICE]: Unable to login user {0} {1} to grid {2}, reason: {3}",
agentCircuit.firstname, agentCircuit.lastname, region.ExternalHostName + ":" + region.HttpPort, reason);
// restore the old travel info
lock (m_TravelingAgents)
m_TravelingAgents[agentCircuit.SessionID] = old;
return false;
}
return true;
}
TravelingAgentInfo UpdateTravelInfo(AgentCircuitData agentCircuit, GridRegion region)
{
TravelingAgentInfo travel = new TravelingAgentInfo();
TravelingAgentInfo old = null;
lock (m_TravelingAgents)
{
if (m_TravelingAgents.ContainsKey(agentCircuit.SessionID))
{
old = m_TravelingAgents[agentCircuit.SessionID];
}
m_TravelingAgents[agentCircuit.SessionID] = travel;
}
travel.UserID = agentCircuit.AgentID;
travel.GridExternalName = region.ExternalHostName + ":" + region.HttpPort;
travel.ServiceToken = agentCircuit.ServiceSessionID;
if (old != null)
travel.ClientToken = old.ClientToken;
return old;
}
public void LogoutAgent(UUID userID, UUID sessionID)
{
m_log.DebugFormat("[USER AGENT SERVICE]: User {0} logged out", userID);
lock (m_TravelingAgents)
{
List<UUID> travels = new List<UUID>();
foreach (KeyValuePair<UUID, TravelingAgentInfo> kvp in m_TravelingAgents)
if (kvp.Value == null) // do some clean up
travels.Add(kvp.Key);
else if (kvp.Value.UserID == userID)
travels.Add(kvp.Key);
foreach (UUID session in travels)
m_TravelingAgents.Remove(session);
}
}
// We need to prevent foreign users with the same UUID as a local user
public bool AgentIsComingHome(UUID sessionID, string thisGridExternalName)
{
if (!m_TravelingAgents.ContainsKey(sessionID))
return false;
TravelingAgentInfo travel = m_TravelingAgents[sessionID];
return travel.GridExternalName == thisGridExternalName;
}
public bool VerifyClient(UUID sessionID, string token)
{
return true;
// Commenting this for now until I understand better what part of a sender's
// info stays unchanged throughout a session
//
//if (m_TravelingAgents.ContainsKey(sessionID))
//{
// // Aquiles heel. Must trust the first grid upon login
// if (m_TravelingAgents[sessionID].ClientToken == string.Empty)
// {
// m_TravelingAgents[sessionID].ClientToken = token;
// return true;
// }
// return m_TravelingAgents[sessionID].ClientToken == token;
//}
//return false;
}
public bool VerifyAgent(UUID sessionID, string token)
{
if (m_TravelingAgents.ContainsKey(sessionID))
{
m_log.DebugFormat("[USER AGENT SERVICE]: Verifying agent token {0} against {1}", token, m_TravelingAgents[sessionID].ServiceToken);
return m_TravelingAgents[sessionID].ServiceToken == token;
}
m_log.DebugFormat("[USER AGENT SERVICE]: Token verification for session {0}: no such session", sessionID);
return false;
}
}
class TravelingAgentInfo
{
public UUID UserID;
public string GridExternalName = string.Empty;
public string ServiceToken = string.Empty;
public string ClientToken = string.Empty;
}
}
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