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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.Reflection;
using OpenSim.Framework;
using OpenSim.Services.Interfaces;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
using OpenSim.Server.Base;
using OpenMetaverse;
using Nini.Config;
using log4net;
namespace OpenSim.Services.HypergridService
{
public class GatekeeperService : IGatekeeperService
{
private static readonly ILog m_log =
LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType);
IGridService m_GridService;
IPresenceService m_PresenceService;
IAuthenticationService m_AuthenticationService;
IUserAccountService m_UserAccountService;
ISimulationService m_SimulationService;
string m_AuthDll;
UUID m_ScopeID;
bool m_AllowTeleportsToAnyRegion;
GridRegion m_DefaultGatewayRegion;
public GatekeeperService(IConfigSource config, ISimulationService simService)
{
IConfig serverConfig = config.Configs["GatekeeperService"];
if (serverConfig == null)
throw new Exception(String.Format("No section GatekeeperService in config file"));
string accountService = serverConfig.GetString("UserAccountService", String.Empty);
string gridService = serverConfig.GetString("GridService", String.Empty);
string presenceService = serverConfig.GetString("PresenceService", String.Empty);
string simulationService = serverConfig.GetString("SimulationService", String.Empty);
m_AuthDll = serverConfig.GetString("AuthenticationService", String.Empty);
if (accountService == string.Empty || gridService == string.Empty ||
presenceService == string.Empty || m_AuthDll == string.Empty)
throw new Exception("Incomplete specifications, Gatekeeper Service cannot function.");
string scope = serverConfig.GetString("ScopeID", UUID.Zero.ToString());
UUID.TryParse(scope, out m_ScopeID);
//m_WelcomeMessage = serverConfig.GetString("WelcomeMessage", "Welcome to OpenSim!");
m_AllowTeleportsToAnyRegion = serverConfig.GetBoolean("AllowTeleportsToAnyRegion", true);
Object[] args = new Object[] { config };
m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(accountService, args);
m_GridService = ServerUtils.LoadPlugin<IGridService>(gridService, args);
m_PresenceService = ServerUtils.LoadPlugin<IPresenceService>(presenceService, args);
if (simService != null)
m_SimulationService = simService;
else if (simulationService != string.Empty)
m_SimulationService = ServerUtils.LoadPlugin<ISimulationService>(simulationService, args);
if (m_UserAccountService == null || m_GridService == null ||
m_PresenceService == null || m_SimulationService == null)
throw new Exception("Unable to load a required plugin, Gatekeeper Service cannot function.");
m_log.Debug("[GATEKEEPER SERVICE]: Starting...");
}
public GatekeeperService(IConfigSource config)
: this(config, null)
{
}
public bool LinkRegion(string regionName, out UUID regionID, out ulong regionHandle, out string imageURL, out string reason)
{
regionID = UUID.Zero;
regionHandle = 0;
imageURL = string.Empty;
reason = string.Empty;
m_log.DebugFormat("[GATEKEEPER SERVICE]: Request to link to {0}", regionName);
if (!m_AllowTeleportsToAnyRegion)
{
List<GridRegion> defs = m_GridService.GetDefaultRegions(m_ScopeID);
if (defs != null && defs.Count > 0)
m_DefaultGatewayRegion = defs[0];
try
{
regionID = m_DefaultGatewayRegion.RegionID;
regionHandle = m_DefaultGatewayRegion.RegionHandle;
}
catch
{
reason = "Grid setup problem";
return false;
}
if (regionName != string.Empty)
{
reason = "Direct links to regions not allowed";
return false;
}
return true;
}
GridRegion region = m_GridService.GetRegionByName(m_ScopeID, regionName);
if (region == null)
{
reason = "Region not found";
return false;
}
regionID = region.RegionID;
regionHandle = region.RegionHandle;
string regionimage = "regionImage" + region.RegionID.ToString();
regionimage = regionimage.Replace("-", "");
imageURL = "http://" + region.ExternalHostName + ":" + region.HttpPort + "/index.php?method=" + regionimage;
return true;
}
public GridRegion GetHyperlinkRegion(UUID regionID)
{
m_log.DebugFormat("[GATEKEEPER SERVICE]: Request to get hyperlink region {0}", regionID);
if (!m_AllowTeleportsToAnyRegion)
// Don't even check the given regionID
return m_DefaultGatewayRegion;
GridRegion region = m_GridService.GetRegionByUUID(m_ScopeID, regionID);
return region;
}
public bool LoginAgent(AgentCircuitData aCircuit, GridRegion destination, out string reason)
{
reason = string.Empty;
string authURL = string.Empty;
if (aCircuit.ServiceURLs.ContainsKey("HomeURI"))
authURL = aCircuit.ServiceURLs["HomeURI"].ToString();
m_log.DebugFormat("[GATEKEEPER SERVICE]: Request to login foreign agent {0} {1} @ {2} ({3}) at destination {4}",
aCircuit.firstname, aCircuit.lastname, authURL, aCircuit.AgentID, destination.RegionName);
if (!Authenticate(aCircuit))
{
reason = "Unable to verify identity";
m_log.InfoFormat("[GATEKEEPER SERVICE]: Unable to verify identity of agent {0} {1}. Refusing service.", aCircuit.firstname, aCircuit.lastname);
return false;
}
m_log.DebugFormat("[GATEKEEPER SERVICE]: Identity verified for {0} {1} @ {2}", aCircuit.firstname, aCircuit.lastname, authURL);
// Check to see if we have a local user with that UUID
UserAccount account = m_UserAccountService.GetUserAccount(m_ScopeID, aCircuit.AgentID);
if (account != null)
{
// No, sorry; go away
reason = "User identifier not allowed on this grid";
m_log.InfoFormat("[GATEKEEPER SERVICE]: Foreign agent {0} {1} has UUID of local user {3}. Refusing service.",
aCircuit.firstname, aCircuit.lastname, aCircuit.AgentID);
return false;
}
m_log.DebugFormat("[GATEKEEPER SERVICE]: User ID ok");
// May want to authorize
// Login the presence
if (!m_PresenceService.LoginAgent(aCircuit.AgentID.ToString(), aCircuit.SessionID, aCircuit.SecureSessionID))
{
reason = "Unable to login presence";
m_log.InfoFormat("[GATEKEEPER SERVICE]: Presence login failed for foreign agent {0} {1}. Refusing service.",
aCircuit.firstname, aCircuit.lastname);
return false;
}
m_log.DebugFormat("[GATEKEEPER SERVICE]: Login presence ok");
// Get the region
destination = m_GridService.GetRegionByUUID(m_ScopeID, destination.RegionID);
if (destination == null)
{
reason = "Destination region not found";
return false;
}
m_log.DebugFormat("[GATEKEEPER SERVICE]: destination ok : {0}", destination.RegionName);
// Finally launch the agent at the destination
aCircuit.firstname = aCircuit.firstname + "." + aCircuit.lastname;
aCircuit.lastname = "@" + aCircuit.ServiceURLs["HomeURI"].ToString();
return m_SimulationService.CreateAgent(destination, aCircuit, 0, out reason);
}
protected bool Authenticate(AgentCircuitData aCircuit)
{
string authURL = string.Empty;
if (aCircuit.ServiceURLs.ContainsKey("HomeURI"))
authURL = aCircuit.ServiceURLs["HomeURI"].ToString();
if (authURL == string.Empty)
{
m_log.DebugFormat("[GATEKEEPER SERVICE]: Agent did not provide an authentication server URL");
return false;
}
Object[] args = new Object[] { authURL };
IAuthenticationService authService = ServerUtils.LoadPlugin<IAuthenticationService>(m_AuthDll, args);
if (authService != null)
{
try
{
return authService.Verify(aCircuit.AgentID, aCircuit.SecureSessionID.ToString(), 30);
}
catch
{
m_log.DebugFormat("[GATEKEEPER SERVICE]: Unable to contact authentication service at {0}", authURL);
return false;
}
}
return false;
}
}
}
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