/* * 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.Friends; using OpenSim.Services.Connectors.Hypergrid; using OpenSim.Services.Interfaces; using GridRegion = OpenSim.Services.Interfaces.GridRegion; using OpenSim.Server.Base; using FriendInfo = OpenSim.Services.Interfaces.FriendInfo; 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 IGridUserService m_GridUserService; protected static IGridService m_GridService; protected static GatekeeperServiceConnector m_GatekeeperConnector; protected static IGatekeeperService m_GatekeeperService; protected static IFriendsService m_FriendsService; protected static IPresenceService m_PresenceService; protected static IUserAccountService m_UserAccountService; protected static IFriendsSimConnector m_FriendsLocalSimConnector; // standalone, points to HGFriendsModule protected static FriendsSimConnector m_FriendsSimConnector; // grid protected static string m_GridName; protected static bool m_BypassClientVerification; public UserAgentService(IConfigSource config) : this(config, null) { } public UserAgentService(IConfigSource config, IFriendsSimConnector friendsConnector) { // Let's set this always, because we don't know the sequence // of instantiations if (friendsConnector != null) m_FriendsLocalSimConnector = friendsConnector; if (!m_Initialized) { m_Initialized = true; m_log.DebugFormat("[HOME USERS SECURITY]: Starting..."); m_FriendsSimConnector = new FriendsSimConnector(); 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 gridUserService = serverConfig.GetString("GridUserService", String.Empty); string gatekeeperService = serverConfig.GetString("GatekeeperService", String.Empty); string friendsService = serverConfig.GetString("FriendsService", String.Empty); string presenceService = serverConfig.GetString("PresenceService", String.Empty); string userAccountService = serverConfig.GetString("UserAccountService", String.Empty); m_BypassClientVerification = serverConfig.GetBoolean("BypassClientVerification", false); if (gridService == string.Empty || gridUserService == string.Empty || gatekeeperService == 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_GridUserService = ServerUtils.LoadPlugin<IGridUserService>(gridUserService, args); m_GatekeeperConnector = new GatekeeperServiceConnector(); m_GatekeeperService = ServerUtils.LoadPlugin<IGatekeeperService>(gatekeeperService, args); m_FriendsService = ServerUtils.LoadPlugin<IFriendsService>(friendsService, args); m_PresenceService = ServerUtils.LoadPlugin<IPresenceService>(presenceService, args); m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(userAccountService, args); m_GridName = serverConfig.GetString("ExternalName", string.Empty); if (m_GridName == string.Empty) { serverConfig = config.Configs["GatekeeperService"]; m_GridName = serverConfig.GetString("ExternalName", string.Empty); } if (!m_GridName.EndsWith("/")) m_GridName = m_GridName + "/"; } } 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; GridUserInfo uinfo = m_GridUserService.GetGridUserInfo(userID.ToString()); if (uinfo != null) { if (uinfo.HomeRegionID != UUID.Zero) { home = m_GridService.GetRegionByUUID(UUID.Zero, uinfo.HomeRegionID); position = uinfo.HomePosition; lookAt = uinfo.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, IPEndPoint clientIP, out string reason) { m_log.DebugFormat("[USER AGENT SERVICE]: Request to login user {0} {1} (@{2}) to grid {3}", agentCircuit.firstname, agentCircuit.lastname, ((clientIP == null) ? "stored IP" : clientIP.Address.ToString()), gatekeeper.ServerURI); if (m_UserAccountService.GetUserAccount(UUID.Zero, agentCircuit.AgentID) == null) { m_log.WarnFormat("[USER AGENT SERVICE]: Someone attempted to lauch a foreign user from here {0} {1}", agentCircuit.firstname, agentCircuit.lastname); reason = "Forbidden to launch your agents from here"; return false; } // Take the IP address + port of the gatekeeper (reg) plus the info of finalDestination GridRegion region = new GridRegion(gatekeeper); region.ServerURI = gatekeeper.ServerURI; region.ExternalHostName = finalDestination.ExternalHostName; region.InternalEndPoint = finalDestination.InternalEndPoint; region.RegionName = finalDestination.RegionName; region.RegionID = finalDestination.RegionID; region.RegionLocX = finalDestination.RegionLocX; region.RegionLocY = finalDestination.RegionLocY; // Generate a new service session agentCircuit.ServiceSessionID = region.ServerURI + ";" + UUID.Random(); TravelingAgentInfo old = UpdateTravelInfo(agentCircuit, region); bool success = false; string myExternalIP = string.Empty; string gridName = gatekeeper.ServerURI; m_log.DebugFormat("[USER AGENT SERVICE]: this grid: {0}, desired grid: {1}", m_GridName, gridName); if (m_GridName == gridName) success = m_GatekeeperService.LoginAgent(agentCircuit, finalDestination, out reason); else { success = m_GatekeeperConnector.CreateAgent(region, agentCircuit, (uint)Constants.TeleportFlags.ViaLogin, out myExternalIP, out reason); if (success) // Report them as nowhere m_PresenceService.ReportAgent(agentCircuit.SessionID, UUID.Zero); } if (!success) { m_log.DebugFormat("[USER AGENT SERVICE]: Unable to login user {0} {1} to grid {2}, reason: {3}", agentCircuit.firstname, agentCircuit.lastname, region.ServerURI, reason); // restore the old travel info lock (m_TravelingAgents) { if (old == null) m_TravelingAgents.Remove(agentCircuit.SessionID); else m_TravelingAgents[agentCircuit.SessionID] = old; } return false; } m_log.DebugFormat("[USER AGENT SERVICE]: Gatekeeper sees me as {0}", myExternalIP); // else set the IP addresses associated with this client if (clientIP != null) m_TravelingAgents[agentCircuit.SessionID].ClientIPAddress = clientIP.Address.ToString(); m_TravelingAgents[agentCircuit.SessionID].MyIpAddress = myExternalIP; return true; } public bool LoginAgentToGrid(AgentCircuitData agentCircuit, GridRegion gatekeeper, GridRegion finalDestination, out string reason) { reason = string.Empty; return LoginAgentToGrid(agentCircuit, gatekeeper, finalDestination, null, out reason); } private void SetClientIP(UUID sessionID, string ip) { if (m_TravelingAgents.ContainsKey(sessionID)) { m_log.DebugFormat("[USER AGENT SERVICE]: Setting IP {0} for session {1}", ip, sessionID); m_TravelingAgents[sessionID].ClientIPAddress = ip; } } TravelingAgentInfo UpdateTravelInfo(AgentCircuitData agentCircuit, GridRegion region) { TravelingAgentInfo travel = new TravelingAgentInfo(); TravelingAgentInfo old = null; lock (m_TravelingAgents) { if (m_TravelingAgents.ContainsKey(agentCircuit.SessionID)) { // Very important! Override whatever this agent comes with. // UserAgentService always sets the IP for every new agent // with the original IP address. agentCircuit.IPAddress = m_TravelingAgents[agentCircuit.SessionID].ClientIPAddress; old = m_TravelingAgents[agentCircuit.SessionID]; } m_TravelingAgents[agentCircuit.SessionID] = travel; } travel.UserID = agentCircuit.AgentID; travel.GridExternalName = region.ServerURI; travel.ServiceToken = agentCircuit.ServiceSessionID; if (old != null) travel.ClientIPAddress = old.ClientIPAddress; 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); } GridUserInfo guinfo = m_GridUserService.GetGridUserInfo(userID.ToString()); if (guinfo != null) m_GridUserService.LoggedOut(userID.ToString(), sessionID, guinfo.LastRegionID, guinfo.LastPosition, guinfo.LastLookAt); } // We need to prevent foreign users with the same UUID as a local user public bool IsAgentComingHome(UUID sessionID, string thisGridExternalName) { if (!m_TravelingAgents.ContainsKey(sessionID)) return false; TravelingAgentInfo travel = m_TravelingAgents[sessionID]; return travel.GridExternalName.ToLower() == thisGridExternalName.ToLower(); } public bool VerifyClient(UUID sessionID, string reportedIP) { if (m_BypassClientVerification) return true; m_log.DebugFormat("[USER AGENT SERVICE]: Verifying Client session {0} with reported IP {1}.", sessionID, reportedIP); if (m_TravelingAgents.ContainsKey(sessionID)) { bool result = m_TravelingAgents[sessionID].ClientIPAddress == reportedIP || m_TravelingAgents[sessionID].MyIpAddress == reportedIP; // NATed m_log.DebugFormat("[USER AGENT SERVICE]: Comparing {0} with login IP {1} and MyIP {1}; result is {3}", reportedIP, m_TravelingAgents[sessionID].ClientIPAddress, m_TravelingAgents[sessionID].MyIpAddress, result); return result; } 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; } public List<UUID> StatusNotification(List<string> friends, UUID foreignUserID, bool online) { if (m_FriendsService == null || m_PresenceService == null) { m_log.WarnFormat("[USER AGENT SERVICE]: Unable to perform status notifications because friends or presence services are missing"); return new List<UUID>(); } List<UUID> localFriendsOnline = new List<UUID>(); m_log.DebugFormat("[USER AGENT SERVICE]: Status notification: foreign user {0} wants to notify {1} local friends", foreignUserID, friends.Count); // First, let's double check that the reported friends are, indeed, friends of that user // And let's check that the secret matches List<string> usersToBeNotified = new List<string>(); foreach (string uui in friends) { UUID localUserID; string secret = string.Empty, tmp = string.Empty; if (Util.ParseUniversalUserIdentifier(uui, out localUserID, out tmp, out tmp, out tmp, out secret)) { FriendInfo[] friendInfos = m_FriendsService.GetFriends(localUserID); foreach (FriendInfo finfo in friendInfos) { if (finfo.Friend.StartsWith(foreignUserID.ToString()) && finfo.Friend.EndsWith(secret)) { // great! usersToBeNotified.Add(localUserID.ToString()); } } } } // Now, let's send the notifications m_log.DebugFormat("[USER AGENT SERVICE]: Status notification: user has {0} local friends", usersToBeNotified.Count); // First, let's send notifications to local users who are online in the home grid PresenceInfo[] friendSessions = m_PresenceService.GetAgents(usersToBeNotified.ToArray()); if (friendSessions != null && friendSessions.Length > 0) { PresenceInfo friendSession = null; foreach (PresenceInfo pinfo in friendSessions) if (pinfo.RegionID != UUID.Zero) // let's guard against traveling agents { friendSession = pinfo; break; } if (friendSession != null) { ForwardStatusNotificationToSim(friendSession.RegionID, foreignUserID, friendSession.UserID, online); usersToBeNotified.Remove(friendSession.UserID.ToString()); UUID id; if (UUID.TryParse(friendSession.UserID, out id)) localFriendsOnline.Add(id); } } // Lastly, let's notify the rest who may be online somewhere else foreach (string user in usersToBeNotified) { UUID id = new UUID(user); if (m_TravelingAgents.ContainsKey(id) && m_TravelingAgents[id].GridExternalName != m_GridName) { string url = m_TravelingAgents[id].GridExternalName; // forward m_log.WarnFormat("[USER AGENT SERVICE]: User {0} is visiting {1}. HG Status notifications still not implemented.", user, url); } } // and finally, let's send the online friends if (online) { return localFriendsOnline; } else return new List<UUID>(); } protected void ForwardStatusNotificationToSim(UUID regionID, UUID foreignUserID, string user, bool online) { UUID userID; if (UUID.TryParse(user, out userID)) { if (m_FriendsLocalSimConnector != null) { m_log.DebugFormat("[USER AGENT SERVICE]: Local Notify, user {0} is {1}", foreignUserID, (online ? "online" : "offline")); m_FriendsLocalSimConnector.StatusNotify(foreignUserID, userID, online); } else { GridRegion region = m_GridService.GetRegionByUUID(UUID.Zero /* !!! */, regionID); if (region != null) { m_log.DebugFormat("[USER AGENT SERVICE]: Remote Notify to region {0}, user {1} is {2}", region.RegionName, foreignUserID, (online ? "online" : "offline")); m_FriendsSimConnector.StatusNotify(region, foreignUserID, userID, online); } } } } public List<UUID> GetOnlineFriends(UUID foreignUserID, List<string> friends) { List<UUID> online = new List<UUID>(); if (m_FriendsService == null || m_PresenceService == null) { m_log.WarnFormat("[USER AGENT SERVICE]: Unable to get online friends because friends or presence services are missing"); return online; } m_log.DebugFormat("[USER AGENT SERVICE]: Foreign user {0} wants to know status of {1} local friends", foreignUserID, friends.Count); // First, let's double check that the reported friends are, indeed, friends of that user // And let's check that the secret matches and the rights List<string> usersToBeNotified = new List<string>(); foreach (string uui in friends) { UUID localUserID; string secret = string.Empty, tmp = string.Empty; if (Util.ParseUniversalUserIdentifier(uui, out localUserID, out tmp, out tmp, out tmp, out secret)) { FriendInfo[] friendInfos = m_FriendsService.GetFriends(localUserID); foreach (FriendInfo finfo in friendInfos) { if (finfo.Friend.StartsWith(foreignUserID.ToString()) && finfo.Friend.EndsWith(secret) && (finfo.TheirFlags & (int)FriendRights.CanSeeOnline) != 0 && (finfo.TheirFlags != -1)) { // great! usersToBeNotified.Add(localUserID.ToString()); } } } } // Now, let's find out their status m_log.DebugFormat("[USER AGENT SERVICE]: GetOnlineFriends: user has {0} local friends with status rights", usersToBeNotified.Count); // First, let's send notifications to local users who are online in the home grid PresenceInfo[] friendSessions = m_PresenceService.GetAgents(usersToBeNotified.ToArray()); if (friendSessions != null && friendSessions.Length > 0) { foreach (PresenceInfo pi in friendSessions) { UUID presenceID; if (UUID.TryParse(pi.UserID, out presenceID)) online.Add(presenceID); } } return online; } public Dictionary<string, object> GetUserInfo(UUID userID) { Dictionary<string, object> info = new Dictionary<string, object>(); if (m_UserAccountService == null) { m_log.WarnFormat("[USER AGENT SERVICE]: Unable to get user flags because user account service is missing"); info["result"] = "fail"; info["message"] = "UserAccountService is missing!"; return info; } UserAccount account = m_UserAccountService.GetUserAccount(UUID.Zero /*!!!*/, userID); if (account != null) { info.Add("user_flags", (object)account.UserFlags); info.Add("user_created", (object)account.Created); info.Add("user_title", (object)account.UserTitle); info.Add("result", "success"); } return info; } public Dictionary<string, object> GetServerURLs(UUID userID) { if (m_UserAccountService == null) { m_log.WarnFormat("[USER AGENT SERVICE]: Unable to get server URLs because user account service is missing"); return new Dictionary<string, object>(); } UserAccount account = m_UserAccountService.GetUserAccount(UUID.Zero /*!!!*/, userID); if (account != null) return account.ServiceURLs; return new Dictionary<string, object>(); } public string LocateUser(UUID userID) { foreach (TravelingAgentInfo t in m_TravelingAgents.Values) { if (t == null) { m_log.ErrorFormat("[USER AGENT SERVICE]: Oops! Null TravelingAgentInfo. Please report this on mantis"); continue; } if (t.UserID == userID && !m_GridName.Equals(t.GridExternalName)) return t.GridExternalName; } return string.Empty; } public string GetUUI(UUID userID, UUID targetUserID) { // Let's see if it's a local user UserAccount account = m_UserAccountService.GetUserAccount(UUID.Zero, targetUserID); if (account != null) return targetUserID.ToString() + ";" + m_GridName + ";" + account.FirstName + " " + account.LastName ; // Let's try the list of friends FriendInfo[] friends = m_FriendsService.GetFriends(userID); if (friends != null && friends.Length > 0) { foreach (FriendInfo f in friends) if (f.Friend.StartsWith(targetUserID.ToString())) { // Let's remove the secret UUID id; string tmp = string.Empty, secret = string.Empty; if (Util.ParseUniversalUserIdentifier(f.Friend, out id, out tmp, out tmp, out tmp, out secret)) return f.Friend.Replace(secret, "0"); } } return string.Empty; } } class TravelingAgentInfo { public UUID UserID; public string GridExternalName = string.Empty; public string ServiceToken = string.Empty; public string ClientIPAddress = string.Empty; // as seen from this user agent service public string MyIpAddress = string.Empty; // the user agent service's external IP, as seen from the next gatekeeper } }