389 lines
16 KiB
C#
389 lines
16 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Net;
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using System.Reflection;
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using System.Text.RegularExpressions;
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using OpenSim.Framework;
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using OpenSim.Services.Interfaces;
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using GridRegion = OpenSim.Services.Interfaces.GridRegion;
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using OpenSim.Server.Base;
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using OpenSim.Services.Connectors.Hypergrid;
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using OpenMetaverse;
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using Nini.Config;
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using log4net;
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namespace OpenSim.Services.HypergridService
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{
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public class GatekeeperService : IGatekeeperService
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{
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private static readonly ILog m_log =
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LogManager.GetLogger(
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MethodBase.GetCurrentMethod().DeclaringType);
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private static bool m_Initialized = false;
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private static IGridService m_GridService;
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private static IPresenceService m_PresenceService;
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private static IUserAccountService m_UserAccountService;
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private static IUserAgentService m_UserAgentService;
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private static ISimulationService m_SimulationService;
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protected string m_AllowedClients = string.Empty;
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protected string m_DeniedClients = string.Empty;
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private static UUID m_ScopeID;
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private static bool m_AllowTeleportsToAnyRegion;
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private static string m_ExternalName;
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private static GridRegion m_DefaultGatewayRegion;
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public GatekeeperService(IConfigSource config, ISimulationService simService)
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{
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if (!m_Initialized)
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{
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m_Initialized = true;
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IConfig serverConfig = config.Configs["GatekeeperService"];
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if (serverConfig == null)
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throw new Exception(String.Format("No section GatekeeperService in config file"));
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string accountService = serverConfig.GetString("UserAccountService", String.Empty);
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string homeUsersService = serverConfig.GetString("UserAgentService", string.Empty);
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string gridService = serverConfig.GetString("GridService", String.Empty);
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string presenceService = serverConfig.GetString("PresenceService", String.Empty);
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string simulationService = serverConfig.GetString("SimulationService", String.Empty);
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// These 3 are mandatory, the others aren't
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if (gridService == string.Empty || presenceService == string.Empty)
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throw new Exception("Incomplete specifications, Gatekeeper Service cannot function.");
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string scope = serverConfig.GetString("ScopeID", UUID.Zero.ToString());
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UUID.TryParse(scope, out m_ScopeID);
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//m_WelcomeMessage = serverConfig.GetString("WelcomeMessage", "Welcome to OpenSim!");
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m_AllowTeleportsToAnyRegion = serverConfig.GetBoolean("AllowTeleportsToAnyRegion", true);
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m_ExternalName = serverConfig.GetString("ExternalName", string.Empty);
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if (m_ExternalName != string.Empty && !m_ExternalName.EndsWith("/"))
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m_ExternalName = m_ExternalName + "/";
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Object[] args = new Object[] { config };
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m_GridService = ServerUtils.LoadPlugin<IGridService>(gridService, args);
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m_PresenceService = ServerUtils.LoadPlugin<IPresenceService>(presenceService, args);
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if (accountService != string.Empty)
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m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(accountService, args);
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if (homeUsersService != string.Empty)
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m_UserAgentService = ServerUtils.LoadPlugin<IUserAgentService>(homeUsersService, args);
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if (simService != null)
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m_SimulationService = simService;
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else if (simulationService != string.Empty)
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m_SimulationService = ServerUtils.LoadPlugin<ISimulationService>(simulationService, args);
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m_AllowedClients = serverConfig.GetString("AllowedClients", string.Empty);
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m_DeniedClients = serverConfig.GetString("DeniedClients", string.Empty);
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if (m_GridService == null || m_PresenceService == null || m_SimulationService == null)
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throw new Exception("Unable to load a required plugin, Gatekeeper Service cannot function.");
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m_log.Debug("[GATEKEEPER SERVICE]: Starting...");
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}
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}
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public GatekeeperService(IConfigSource config)
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: this(config, null)
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{
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}
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public bool LinkRegion(string regionName, out UUID regionID, out ulong regionHandle, out string externalName, out string imageURL, out string reason)
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{
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regionID = UUID.Zero;
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regionHandle = 0;
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externalName = m_ExternalName + ((regionName != string.Empty) ? " " + regionName : "");
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imageURL = string.Empty;
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reason = string.Empty;
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GridRegion region = null;
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Request to link to {0}", (regionName == string.Empty)? "default region" : regionName);
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if (!m_AllowTeleportsToAnyRegion || regionName == string.Empty)
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{
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List<GridRegion> defs = m_GridService.GetDefaultRegions(m_ScopeID);
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if (defs != null && defs.Count > 0)
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{
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region = defs[0];
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m_DefaultGatewayRegion = region;
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}
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else
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{
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reason = "Grid setup problem. Try specifying a particular region here.";
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Unable to send information. Please specify a default region for this grid!");
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return false;
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}
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}
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else
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{
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region = m_GridService.GetRegionByName(m_ScopeID, regionName);
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if (region == null)
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{
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reason = "Region not found";
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return false;
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}
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}
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regionID = region.RegionID;
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regionHandle = region.RegionHandle;
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string regionimage = "regionImage" + regionID.ToString();
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regionimage = regionimage.Replace("-", "");
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imageURL = region.ServerURI + "index.php?method=" + regionimage;
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return true;
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}
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public GridRegion GetHyperlinkRegion(UUID regionID)
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{
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Request to get hyperlink region {0}", regionID);
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if (!m_AllowTeleportsToAnyRegion)
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// Don't even check the given regionID
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return m_DefaultGatewayRegion;
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GridRegion region = m_GridService.GetRegionByUUID(m_ScopeID, regionID);
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return region;
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}
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#region Login Agent
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public bool LoginAgent(AgentCircuitData aCircuit, GridRegion destination, out string reason)
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{
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reason = string.Empty;
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string authURL = string.Empty;
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if (aCircuit.ServiceURLs.ContainsKey("HomeURI"))
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authURL = aCircuit.ServiceURLs["HomeURI"].ToString();
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m_log.InfoFormat("[GATEKEEPER SERVICE]: Login request for {0} {1} @ {2} ({3}) at {4} using viewer {5}, channel {6}, IP {7}, Mac {8}, Id0 {9} Teleport Flags {10}",
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aCircuit.firstname, aCircuit.lastname, authURL, aCircuit.AgentID, destination.RegionName,
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aCircuit.Viewer, aCircuit.Channel, aCircuit.IPAddress, aCircuit.Mac, aCircuit.Id0, aCircuit.teleportFlags.ToString());
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//
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// Check client
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//
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if (m_AllowedClients != string.Empty)
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{
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Regex arx = new Regex(m_AllowedClients);
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Match am = arx.Match(aCircuit.Viewer);
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if (!am.Success)
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{
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m_log.InfoFormat("[GATEKEEPER SERVICE]: Login failed, reason: client {0} is not allowed", aCircuit.Viewer);
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return false;
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}
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}
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if (m_DeniedClients != string.Empty)
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{
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Regex drx = new Regex(m_DeniedClients);
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Match dm = drx.Match(aCircuit.Viewer);
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if (dm.Success)
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{
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m_log.InfoFormat("[GATEKEEPER SERVICE]: Login failed, reason: client {0} is denied", aCircuit.Viewer);
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return false;
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}
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}
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//
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// Authenticate the user
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//
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if (!Authenticate(aCircuit))
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{
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reason = "Unable to verify identity";
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m_log.InfoFormat("[GATEKEEPER SERVICE]: Unable to verify identity of agent {0} {1}. Refusing service.", aCircuit.firstname, aCircuit.lastname);
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return false;
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}
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Identity verified for {0} {1} @ {2}", aCircuit.firstname, aCircuit.lastname, authURL);
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//
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// Check for impersonations
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//
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UserAccount account = null;
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if (m_UserAccountService != null)
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{
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// Check to see if we have a local user with that UUID
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account = m_UserAccountService.GetUserAccount(m_ScopeID, aCircuit.AgentID);
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if (account != null)
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{
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// Make sure this is the user coming home, and not a foreign user with same UUID as a local user
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if (m_UserAgentService != null)
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{
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if (!m_UserAgentService.IsAgentComingHome(aCircuit.SessionID, m_ExternalName))
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{
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// Can't do, sorry
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reason = "Unauthorized";
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m_log.InfoFormat("[GATEKEEPER SERVICE]: Foreign agent {0} {1} has same ID as local user. Refusing service.",
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aCircuit.firstname, aCircuit.lastname);
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return false;
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}
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}
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}
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}
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m_log.DebugFormat("[GATEKEEPER SERVICE]: User is ok");
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// May want to authorize
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bool isFirstLogin = false;
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//
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// Login the presence, if it's not there yet (by the login service)
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//
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PresenceInfo presence = m_PresenceService.GetAgent(aCircuit.SessionID);
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if (presence != null) // it has been placed there by the login service
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isFirstLogin = true;
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else
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if (!m_PresenceService.LoginAgent(aCircuit.AgentID.ToString(), aCircuit.SessionID, aCircuit.SecureSessionID))
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{
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reason = "Unable to login presence";
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m_log.InfoFormat("[GATEKEEPER SERVICE]: Presence login failed for foreign agent {0} {1}. Refusing service.",
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aCircuit.firstname, aCircuit.lastname);
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return false;
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}
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Login presence ok");
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//
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// Get the region
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//
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destination = m_GridService.GetRegionByUUID(m_ScopeID, destination.RegionID);
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if (destination == null)
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{
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reason = "Destination region not found";
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return false;
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}
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m_log.DebugFormat("[GATEKEEPER SERVICE]: destination ok: {0}", destination.RegionName);
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//
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// Adjust the visible name
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//
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if (account != null)
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{
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aCircuit.firstname = account.FirstName;
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aCircuit.lastname = account.LastName;
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}
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if (account == null)
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{
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if (!aCircuit.lastname.StartsWith("@"))
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aCircuit.firstname = aCircuit.firstname + "." + aCircuit.lastname;
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try
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{
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Uri uri = new Uri(aCircuit.ServiceURLs["HomeURI"].ToString());
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aCircuit.lastname = "@" + uri.Host; // + ":" + uri.Port;
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}
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catch
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{
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m_log.WarnFormat("[GATEKEEPER SERVICE]: Malformed HomeURI (this should never happen): {0}", aCircuit.ServiceURLs["HomeURI"]);
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aCircuit.lastname = "@" + aCircuit.ServiceURLs["HomeURI"].ToString();
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}
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}
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//
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// Finally launch the agent at the destination
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//
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Constants.TeleportFlags loginFlag = isFirstLogin ? Constants.TeleportFlags.ViaLogin : Constants.TeleportFlags.ViaHGLogin;
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// Preserve our TeleportFlags we have gathered so-far
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loginFlag |= (Constants.TeleportFlags) aCircuit.teleportFlags;
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m_log.DebugFormat("[GATEKEEPER SERVICE]: launching agent {0}", loginFlag);
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return m_SimulationService.CreateAgent(destination, aCircuit, (uint)loginFlag, out reason);
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}
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protected bool Authenticate(AgentCircuitData aCircuit)
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{
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if (!CheckAddress(aCircuit.ServiceSessionID))
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return false;
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string userURL = string.Empty;
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if (aCircuit.ServiceURLs.ContainsKey("HomeURI"))
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userURL = aCircuit.ServiceURLs["HomeURI"].ToString();
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if (userURL == string.Empty)
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{
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Agent did not provide an authentication server URL");
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return false;
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}
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if (userURL == m_ExternalName)
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{
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return m_UserAgentService.VerifyAgent(aCircuit.SessionID, aCircuit.ServiceSessionID);
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}
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else
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{
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IUserAgentService userAgentService = new UserAgentServiceConnector(userURL);
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try
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{
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return userAgentService.VerifyAgent(aCircuit.SessionID, aCircuit.ServiceSessionID);
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}
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catch
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{
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Unable to contact authentication service at {0}", userURL);
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return false;
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}
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}
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return false;
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}
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// Check that the service token was generated for *this* grid.
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// If it wasn't then that's a fake agent.
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protected bool CheckAddress(string serviceToken)
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{
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string[] parts = serviceToken.Split(new char[] { ';' });
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if (parts.Length < 2)
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return false;
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char[] trailing_slash = new char[] { '/' };
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string addressee = parts[0].TrimEnd(trailing_slash);
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string externalname = m_ExternalName.TrimEnd(trailing_slash);
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m_log.DebugFormat("[GATEKEEPER SERVICE]: Verifying {0} against {1}", addressee, externalname);
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return string.Equals(addressee, externalname, StringComparison.OrdinalIgnoreCase);
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}
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#endregion
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#region Misc
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#endregion
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}
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}
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