aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Services/LLLoginService/LLLoginService.cs
blob: 06e05a9f90c92eb52642b4ee632c81cb19f43dc1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
/*
 * 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;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text.RegularExpressions;

using log4net;
using Nini.Config;
using OpenMetaverse;

using OpenSim.Framework;
using OpenSim.Framework.Console;
using OpenSim.Server.Base;
using OpenSim.Services.Interfaces;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
using FriendInfo = OpenSim.Services.Interfaces.FriendInfo;
using OpenSim.Services.Connectors.Hypergrid;

namespace OpenSim.Services.LLLoginService
{
    public class LLLoginService : ILoginService
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        private static bool Initialized = false;

        protected IUserAccountService m_UserAccountService;
        protected IGridUserService m_GridUserService;
        protected IAuthenticationService m_AuthenticationService;
        protected IInventoryService m_InventoryService;
        protected IGridService m_GridService;
        protected IPresenceService m_PresenceService;
        protected ISimulationService m_LocalSimulationService;
        protected ISimulationService m_RemoteSimulationService;
        protected ILibraryService m_LibraryService;
        protected IFriendsService m_FriendsService;
        protected IAvatarService m_AvatarService;
        protected IUserAgentService m_UserAgentService;

        protected GatekeeperServiceConnector m_GatekeeperConnector;

        protected string m_DefaultRegionName;
        protected string m_WelcomeMessage;
        protected bool m_RequireInventory;
        protected int m_MinLoginLevel;
        protected string m_GatekeeperURL;
        protected bool m_AllowRemoteSetLoginLevel;
        protected string m_MapTileURL;
        protected string m_ProfileURL;
        protected string m_OpenIDURL;
        protected string m_SearchURL;
        protected string m_Currency;

        protected string m_AllowedClients;
        protected string m_DeniedClients;

        protected string m_DSTZone;

        IConfig m_LoginServerConfig;
//        IConfig m_ClientsConfig;

        public LLLoginService(IConfigSource config, ISimulationService simService, ILibraryService libraryService)
        {
            m_LoginServerConfig = config.Configs["LoginService"];
            if (m_LoginServerConfig == null)
                throw new Exception(String.Format("No section LoginService in config file"));

            string accountService = m_LoginServerConfig.GetString("UserAccountService", String.Empty);
            string gridUserService = m_LoginServerConfig.GetString("GridUserService", String.Empty);
            string agentService = m_LoginServerConfig.GetString("UserAgentService", String.Empty);
            string authService = m_LoginServerConfig.GetString("AuthenticationService", String.Empty);
            string invService = m_LoginServerConfig.GetString("InventoryService", String.Empty);
            string gridService = m_LoginServerConfig.GetString("GridService", String.Empty);
            string presenceService = m_LoginServerConfig.GetString("PresenceService", String.Empty);
            string libService = m_LoginServerConfig.GetString("LibraryService", String.Empty);
            string friendsService = m_LoginServerConfig.GetString("FriendsService", String.Empty);
            string avatarService = m_LoginServerConfig.GetString("AvatarService", String.Empty);
            string simulationService = m_LoginServerConfig.GetString("SimulationService", String.Empty);

            m_DefaultRegionName = m_LoginServerConfig.GetString("DefaultRegion", String.Empty);
            m_WelcomeMessage = m_LoginServerConfig.GetString("WelcomeMessage", "Welcome to OpenSim!");
            m_RequireInventory = m_LoginServerConfig.GetBoolean("RequireInventory", true);
            m_AllowRemoteSetLoginLevel = m_LoginServerConfig.GetBoolean("AllowRemoteSetLoginLevel", false);
            m_MinLoginLevel = m_LoginServerConfig.GetInt("MinLoginLevel", 0);
            m_GatekeeperURL = m_LoginServerConfig.GetString("GatekeeperURI", string.Empty);
            m_MapTileURL = m_LoginServerConfig.GetString("MapTileURL", string.Empty);
            m_ProfileURL = m_LoginServerConfig.GetString("ProfileServerURL", string.Empty);
            m_OpenIDURL = m_LoginServerConfig.GetString("OpenIDServerURL", String.Empty);
            m_SearchURL = m_LoginServerConfig.GetString("SearchURL", string.Empty);
            m_Currency = m_LoginServerConfig.GetString("Currency", string.Empty);

            m_AllowedClients = m_LoginServerConfig.GetString("AllowedClients", string.Empty);
            m_DeniedClients = m_LoginServerConfig.GetString("DeniedClients", string.Empty);

            m_DSTZone = m_LoginServerConfig.GetString("DSTZone", "America/Los_Angeles;Pacific Standard Time");

            // Clean up some of these vars
            if (m_MapTileURL != String.Empty)
            {
                m_MapTileURL = m_MapTileURL.Trim();
                if (!m_MapTileURL.EndsWith("/"))
                    m_MapTileURL = m_MapTileURL + "/";
            }

            // These are required; the others aren't
            if (accountService == string.Empty || authService == string.Empty)
                throw new Exception("LoginService is missing service specifications");

            // replace newlines in welcome message
            m_WelcomeMessage = m_WelcomeMessage.Replace("\\n", "\n");

            Object[] args = new Object[] { config };
            m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(accountService, args);
            m_GridUserService = ServerUtils.LoadPlugin<IGridUserService>(gridUserService, args);
            Object[] authArgs = new Object[] { config, m_UserAccountService };
            m_AuthenticationService = ServerUtils.LoadPlugin<IAuthenticationService>(authService, authArgs);
            m_InventoryService = ServerUtils.LoadPlugin<IInventoryService>(invService, args);

            if (gridService != string.Empty)
                m_GridService = ServerUtils.LoadPlugin<IGridService>(gridService, args);
            if (presenceService != string.Empty)
                m_PresenceService = ServerUtils.LoadPlugin<IPresenceService>(presenceService, args);
            if (avatarService != string.Empty)
                m_AvatarService = ServerUtils.LoadPlugin<IAvatarService>(avatarService, args);
            if (friendsService != string.Empty)
                m_FriendsService = ServerUtils.LoadPlugin<IFriendsService>(friendsService, args);
            if (simulationService != string.Empty)
                m_RemoteSimulationService = ServerUtils.LoadPlugin<ISimulationService>(simulationService, args);
            if (agentService != string.Empty)
                m_UserAgentService = ServerUtils.LoadPlugin<IUserAgentService>(agentService, args);

            //
            // deal with the services given as argument
            //
            m_LocalSimulationService = simService;
            if (libraryService != null)
            {
                m_log.DebugFormat("[LLOGIN SERVICE]: Using LibraryService given as argument");
                m_LibraryService = libraryService;
            }
            else if (libService != string.Empty)
            {
                m_log.DebugFormat("[LLOGIN SERVICE]: Using instantiated LibraryService");
                m_LibraryService = ServerUtils.LoadPlugin<ILibraryService>(libService, args);
            }

            m_GatekeeperConnector = new GatekeeperServiceConnector();

            if (!Initialized)
            {
                Initialized = true;
                RegisterCommands();
            }

            m_log.DebugFormat("[LLOGIN SERVICE]: Starting...");

        }

        public LLLoginService(IConfigSource config) : this(config, null, null)
        {
        }

        public Hashtable SetLevel(string firstName, string lastName, string passwd, int level, IPEndPoint clientIP)
        {
            Hashtable response = new Hashtable();
            response["success"] = "false";

            if (!m_AllowRemoteSetLoginLevel)
                return response;

            try
            {
                UserAccount account = m_UserAccountService.GetUserAccount(UUID.Zero, firstName, lastName);
                if (account == null)
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Set Level failed, user {0} {1} not found", firstName, lastName);
                    return response;
                }

                if (account.UserLevel < 200)
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Set Level failed, reason: user level too low");
                    return response;
                }

                //
                // Authenticate this user
                //
                // We don't support clear passwords here
                //
                string token = m_AuthenticationService.Authenticate(account.PrincipalID, passwd, 30);
                UUID secureSession = UUID.Zero;
                if ((token == string.Empty) || (token != string.Empty && !UUID.TryParse(token, out secureSession)))
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: SetLevel failed, reason: authentication failed");
                    return response;
                }
            }
            catch (Exception e)
            {
                m_log.Error("[LLOGIN SERVICE]: SetLevel failed, exception " + e.ToString());
                return response;
            }

            m_MinLoginLevel = level;
            m_log.InfoFormat("[LLOGIN SERVICE]: Login level set to {0} by {1} {2}", level, firstName, lastName);

            response["success"] = true;
            return response;
        }

        public LoginResponse Login(string firstName, string lastName, string passwd, string startLocation, UUID scopeID, 
            string clientVersion, string channel, string mac, string id0, IPEndPoint clientIP)
        {
            bool success = false;
            UUID session = UUID.Random();

            m_log.InfoFormat("[LLOGIN SERVICE]: Login request for {0} {1} at {2} using viewer {3}, channel {4}, IP {5}, Mac {6}, Id0 {7}",
                firstName, lastName, startLocation, clientVersion, channel, clientIP.Address.ToString(), mac, id0);
            
            try
            {
                //
                // Check client
                //
                if (m_AllowedClients != string.Empty)
                {
                    Regex arx = new Regex(m_AllowedClients);
                    Match am = arx.Match(clientVersion);

                    if (!am.Success)
                    {
                        m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: client {0} is not allowed", clientVersion);
                        return LLFailedLoginResponse.LoginBlockedProblem;
                    }
                }

                if (m_DeniedClients != string.Empty)
                {
                    Regex drx = new Regex(m_DeniedClients);
                    Match dm = drx.Match(clientVersion);

                    if (dm.Success)
                    {
                        m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: client {0} is denied", clientVersion);
                        return LLFailedLoginResponse.LoginBlockedProblem;
                    }
                }

                //
                // Get the account and check that it exists
                //
                UserAccount account = m_UserAccountService.GetUserAccount(scopeID, firstName, lastName);
                if (account == null)
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: user not found");
                    return LLFailedLoginResponse.UserProblem;
                }

                if (account.UserLevel < 0)
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: Unverified account");
                    return LLFailedLoginResponse.UnverifiedAccountProblem;
                }

                if (account.UserLevel < m_MinLoginLevel)
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: login is blocked for user level {0}", account.UserLevel);
                    return LLFailedLoginResponse.LoginBlockedProblem;
                }

                // If a scope id is requested, check that the account is in
                // that scope, or unscoped.
                //
                if (scopeID != UUID.Zero)
                {
                    if (account.ScopeID != scopeID && account.ScopeID != UUID.Zero)
                    {
                        m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: user not found");
                        return LLFailedLoginResponse.UserProblem;
                    }
                }
                else
                {
                    scopeID = account.ScopeID;
                }

                //
                // Authenticate this user
                //
                if (!passwd.StartsWith("$1$"))
                    passwd = "$1$" + Util.Md5Hash(passwd);
                passwd = passwd.Remove(0, 3); //remove $1$
                string token = m_AuthenticationService.Authenticate(account.PrincipalID, passwd, 30);
                UUID secureSession = UUID.Zero;
                if ((token == string.Empty) || (token != string.Empty && !UUID.TryParse(token, out secureSession)))
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: authentication failed");
                    return LLFailedLoginResponse.UserProblem;
                }

                //
                // Get the user's inventory
                //
                if (m_RequireInventory && m_InventoryService == null)
                {
                    m_log.WarnFormat("[LLOGIN SERVICE]: Login failed, reason: inventory service not set up");
                    return LLFailedLoginResponse.InventoryProblem;
                }
                List<InventoryFolderBase> inventorySkel = m_InventoryService.GetInventorySkeleton(account.PrincipalID);
                if (m_RequireInventory && ((inventorySkel == null) || (inventorySkel != null && inventorySkel.Count == 0)))
                {
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: unable to retrieve user inventory");
                    return LLFailedLoginResponse.InventoryProblem;
                }

                // Get active gestures
                List<InventoryItemBase> gestures = m_InventoryService.GetActiveGestures(account.PrincipalID);
//                m_log.DebugFormat("[LLOGIN SERVICE]: {0} active gestures", gestures.Count);

                //
                // Login the presence
                //
                if (m_PresenceService != null)
                {
                    success = m_PresenceService.LoginAgent(account.PrincipalID.ToString(), session, secureSession);
                    if (!success)
                    {
                        m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: could not login presence");
                        return LLFailedLoginResponse.GridProblem;
                    }
                }

                //
                // Change Online status and get the home region
                //
                GridRegion home = null;
                GridUserInfo guinfo = m_GridUserService.LoggedIn(account.PrincipalID.ToString());
                if (guinfo != null && (guinfo.HomeRegionID != UUID.Zero) && m_GridService != null)
                {
                    home = m_GridService.GetRegionByUUID(scopeID, guinfo.HomeRegionID);
                }
                if (guinfo == null)
                {
                    // something went wrong, make something up, so that we don't have to test this anywhere else
                    guinfo = new GridUserInfo();
                    guinfo.LastPosition = guinfo.HomePosition = new Vector3(128, 128, 30);
                }
                
                //
                // Find the destination region/grid
                //
                string where = string.Empty;
                Vector3 position = Vector3.Zero;
                Vector3 lookAt = Vector3.Zero;
                GridRegion gatekeeper = null;
                TeleportFlags flags;
                GridRegion destination = FindDestination(account, scopeID, guinfo, session, startLocation, home, out gatekeeper, out where, out position, out lookAt, out flags);
                if (destination == null)
                {
                    m_PresenceService.LogoutAgent(session);
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: destination not found");
                    return LLFailedLoginResponse.GridProblem;
                }

                if (account.UserLevel >= 200)
                    flags |= TeleportFlags.Godlike;
                //
                // Get the avatar
                //
                AvatarAppearance avatar = null;
                if (m_AvatarService != null)
                {
                    avatar = m_AvatarService.GetAppearance(account.PrincipalID);
                }

                //
                // Instantiate/get the simulation interface and launch an agent at the destination
                //
                string reason = string.Empty;
                GridRegion dest;
                AgentCircuitData aCircuit = LaunchAgentAtGrid(gatekeeper, destination, account, avatar, session, secureSession, position, where, 
                    clientVersion, channel, mac, id0, clientIP, flags, out where, out reason, out dest);
                destination = dest;
                if (aCircuit == null)
                {
                    m_PresenceService.LogoutAgent(session);
                    m_log.InfoFormat("[LLOGIN SERVICE]: Login failed, reason: {0}", reason);
                    return new LLFailedLoginResponse("key", reason, "false");

                }
                // Get Friends list 
                FriendInfo[] friendsList = new FriendInfo[0];
                if (m_FriendsService != null)
                {
                    friendsList = m_FriendsService.GetFriends(account.PrincipalID);
//                    m_log.DebugFormat("[LLOGIN SERVICE]: Retrieved {0} friends", friendsList.Length);
                }

                //
                // Finally, fill out the response and return it
                //
                LLLoginResponse response
                    = new LLLoginResponse(
                        account, aCircuit, guinfo, destination, inventorySkel, friendsList, m_LibraryService,
                        where, startLocation, position, lookAt, gestures, m_WelcomeMessage, home, clientIP,
                        m_MapTileURL, m_ProfileURL, m_OpenIDURL, m_SearchURL, m_Currency, m_DSTZone);

                m_log.DebugFormat("[LLOGIN SERVICE]: All clear. Sending login response to client.");
                return response;
            }
            catch (Exception e)
            {
                m_log.WarnFormat("[LLOGIN SERVICE]: Exception processing login for {0} {1}: {2} {3}", firstName, lastName, e.ToString(), e.StackTrace);
                if (m_PresenceService != null)
                    m_PresenceService.LogoutAgent(session);
                return LLFailedLoginResponse.InternalError;
            }
        }

        protected GridRegion FindDestination(
            UserAccount account, UUID scopeID, GridUserInfo pinfo, UUID sessionID, string startLocation,
            GridRegion home, out GridRegion gatekeeper,
            out string where, out Vector3 position, out Vector3 lookAt, out TeleportFlags flags)
        {
            flags = TeleportFlags.ViaLogin;

            m_log.DebugFormat("[LLOGIN SERVICE]: FindDestination for start location {0}", startLocation);

            gatekeeper = null;
            where = "home";
            position = new Vector3(128, 128, 0);
            lookAt = new Vector3(0, 1, 0);

            if (m_GridService == null)
                return null;

            if (startLocation.Equals("home"))
            {
                // logging into home region
                if (pinfo == null)
                    return null;

                GridRegion region = null;

                bool tryDefaults = false;

                if (home == null)
                {
                    m_log.WarnFormat(
                        "[LLOGIN SERVICE]: User {0} {1} tried to login to a 'home' start location but they have none set",
                        account.FirstName, account.LastName);
                    
                    tryDefaults = true;
                }
                else
                {
                    region = home;

                    position = pinfo.HomePosition;
                    lookAt = pinfo.HomeLookAt;
                    flags |= TeleportFlags.ViaHome;
                }
                
                if (tryDefaults)
                {
                    List<GridRegion> defaults = m_GridService.GetDefaultRegions(scopeID);
                    if (defaults != null && defaults.Count > 0)
                    {
                        region = defaults[0];
                        where = "safe";
                    }
                    else
                    {
                        m_log.WarnFormat("[LLOGIN SERVICE]: User {0} {1} does not have a valid home and this grid does not have default locations. Attempting to find random region",
                            account.FirstName, account.LastName);
                        region = FindAlternativeRegion(scopeID);
                        if (region != null)
                            where = "safe";
                    }
                }

                return region;
            }
            else if (startLocation.Equals("last"))
            {
                // logging into last visited region
                where = "last";

                if (pinfo == null)
                    return null;

                GridRegion region = null;

                if (pinfo.LastRegionID.Equals(UUID.Zero) || (region = m_GridService.GetRegionByUUID(scopeID, pinfo.LastRegionID)) == null)
                {
                    List<GridRegion> defaults = m_GridService.GetDefaultRegions(scopeID);
                    if (defaults != null && defaults.Count > 0)
                    {
                        region = defaults[0];
                        where = "safe";
                    }
                    else
                    {
                        m_log.Info("[LLOGIN SERVICE]: Last Region Not Found Attempting to find random region");
                        region = FindAlternativeRegion(scopeID);
                        if (region != null)
                            where = "safe";
                    }

                }
                else
                {
                    position = pinfo.LastPosition;
                    lookAt = pinfo.LastLookAt;
                }
                
                return region;
            }
            else
            {
                flags |= TeleportFlags.ViaRegionID;

                // free uri form
                // e.g. New Moon&135&46  New Moon@osgrid.org:8002&153&34
                where = "url";
                GridRegion region = null;
                Regex reURI = new Regex(@"^uri:(?<region>[^&]+)&(?<x>\d+)&(?<y>\d+)&(?<z>\d+)$");
                Match uriMatch = reURI.Match(startLocation);
                if (uriMatch == null)
                {
                    m_log.InfoFormat("[LLLOGIN SERVICE]: Got Custom Login URI {0}, but can't process it", startLocation);
                    return null;
                }
                else
                {
                    position = new Vector3(float.Parse(uriMatch.Groups["x"].Value, Culture.NumberFormatInfo),
                                           float.Parse(uriMatch.Groups["y"].Value, Culture.NumberFormatInfo),
                                           float.Parse(uriMatch.Groups["z"].Value, Culture.NumberFormatInfo));

                    string regionName = uriMatch.Groups["region"].ToString();
                    if (regionName != null)
                    {
                        if (!regionName.Contains("@"))
                        {
                            List<GridRegion> regions = m_GridService.GetRegionsByName(scopeID, regionName, 1);
                            if ((regions == null) || (regions != null && regions.Count == 0))
                            {
                                m_log.InfoFormat("[LLLOGIN SERVICE]: Got Custom Login URI {0}, can't locate region {1}. Trying defaults.", startLocation, regionName);
                                regions = m_GridService.GetDefaultRegions(scopeID);
                                if (regions != null && regions.Count > 0)
                                {
                                    where = "safe"; 
                                    return regions[0];
                                }
                                else
                                {
                                    m_log.Info("[LLOGIN SERVICE]: Last Region Not Found Attempting to find random region");
                                    region = FindAlternativeRegion(scopeID);
                                    if (region != null)
                                    {
                                        where = "safe";
                                        return region;
                                    }
                                    else
                                    {
                                        m_log.InfoFormat("[LLLOGIN SERVICE]: Got Custom Login URI {0}, Grid does not provide default regions and no alternative found.", startLocation);
                                        return null;
                                    }
                                }
                            }
                            return regions[0];
                        }
                        else
                        {
                            if (m_UserAgentService == null)
                            {
                                m_log.WarnFormat("[LLLOGIN SERVICE]: This llogin service is not running a user agent service, as such it can't lauch agents at foreign grids");
                                return null;
                            }
                            string[] parts = regionName.Split(new char[] { '@' });
                            if (parts.Length < 2)
                            {
                                m_log.InfoFormat("[LLLOGIN SERVICE]: Got Custom Login URI {0}, can't locate region {1}", startLocation, regionName);
                                return null;
                            }
                            // Valid specification of a remote grid
                            
                            regionName = parts[0];
                            string domainLocator = parts[1];
                            parts = domainLocator.Split(new char[] {':'});
                            string domainName = parts[0];
                            uint port = 0;
                            if (parts.Length > 1)
                                UInt32.TryParse(parts[1], out port);

//                            GridRegion region = FindForeignRegion(domainName, port, regionName, out gatekeeper);
                            region = FindForeignRegion(domainName, port, regionName, out gatekeeper);
                            return region;
                        }
                    }
                    else
                    {
                        List<GridRegion> defaults = m_GridService.GetDefaultRegions(scopeID);
                        if (defaults != null && defaults.Count > 0)
                        {
                            where = "safe"; 
                            return defaults[0];
                        }
                        else
                            return null;
                    }
                }
                //response.LookAt = "[r0,r1,r0]";
                //// can be: last, home, safe, url
                //response.StartLocation = "url";

            }

        }

        private GridRegion FindAlternativeRegion(UUID scopeID)
        {
            List<GridRegion> hyperlinks = null;
            List<GridRegion> regions = m_GridService.GetFallbackRegions(scopeID, 1000 * (int)Constants.RegionSize, 1000 * (int)Constants.RegionSize);
            if (regions != null && regions.Count > 0)
            {
                hyperlinks = m_GridService.GetHyperlinks(scopeID);
                IEnumerable<GridRegion> availableRegions = regions.Except(hyperlinks);
                if (availableRegions.Count() > 0)
                    return availableRegions.ElementAt(0);
            }
            // No fallbacks, try to find an arbitrary region that is not a hyperlink
            // maxNumber is fixed for now; maybe use some search pattern with increasing maxSize here?
            regions = m_GridService.GetRegionsByName(scopeID, "", 10);
            if (regions != null && regions.Count > 0)
            {
                if (hyperlinks == null)
                    hyperlinks = m_GridService.GetHyperlinks(scopeID);
                IEnumerable<GridRegion> availableRegions = regions.Except(hyperlinks);
                if (availableRegions.Count() > 0)
                    return availableRegions.ElementAt(0);
            }
            return null;
        }

        private GridRegion FindForeignRegion(string domainName, uint port, string regionName, out GridRegion gatekeeper)
        {
            m_log.Debug("[LLLOGIN SERVICE]: attempting to findforeignregion " + domainName + ":" + port.ToString() + ":" + regionName);
            gatekeeper = new GridRegion();
            gatekeeper.ExternalHostName = domainName;
            gatekeeper.HttpPort = port;
            gatekeeper.RegionName = regionName;
            gatekeeper.InternalEndPoint = new IPEndPoint(IPAddress.Parse("0.0.0.0"), 0);

            UUID regionID;
            ulong handle;
            string imageURL = string.Empty, reason = string.Empty;
            if (m_GatekeeperConnector.LinkRegion(gatekeeper, out regionID, out handle, out domainName, out imageURL, out reason))
            {
                GridRegion destination = m_GatekeeperConnector.GetHyperlinkRegion(gatekeeper, regionID);
                return destination;
            }

            return null;
        }

        private string hostName = string.Empty;
        private int port = 0;

        private void SetHostAndPort(string url)
        {
            try
            {
                Uri uri = new Uri(url);
                hostName = uri.Host;
                port = uri.Port;
            }
            catch
            {
                m_log.WarnFormat("[LLLogin SERVICE]: Unable to parse GatekeeperURL {0}", url);
            }
        }

        protected AgentCircuitData LaunchAgentAtGrid(GridRegion gatekeeper, GridRegion destination, UserAccount account, AvatarAppearance avatar,
            UUID session, UUID secureSession, Vector3 position, string currentWhere, string viewer, string channel, string mac, string id0,
            IPEndPoint clientIP, TeleportFlags flags, out string where, out string reason, out GridRegion dest)
        {
            where = currentWhere;
            ISimulationService simConnector = null;
            reason = string.Empty;
            uint circuitCode = 0;
            AgentCircuitData aCircuit = null;

            if (m_UserAgentService == null)
            {
                // HG standalones have both a localSimulatonDll and a remoteSimulationDll
                // non-HG standalones have just a localSimulationDll
                // independent login servers have just a remoteSimulationDll
                if (m_LocalSimulationService != null)
                    simConnector = m_LocalSimulationService;
                else if (m_RemoteSimulationService != null)
                    simConnector = m_RemoteSimulationService;
            }
            else // User Agent Service is on
            {
                if (gatekeeper == null) // login to local grid
                {
                    if (hostName == string.Empty)
                        SetHostAndPort(m_GatekeeperURL);

                    gatekeeper = new GridRegion(destination);
                    gatekeeper.ExternalHostName = hostName;
                    gatekeeper.HttpPort = (uint)port;
                    gatekeeper.ServerURI = m_GatekeeperURL;
                }
                m_log.Debug("[LLLOGIN SERVICE]: no gatekeeper detected..... using " + m_GatekeeperURL);
            }

            bool success = false;

            if (m_UserAgentService == null && simConnector != null)
            {
                circuitCode = (uint)Util.RandomClass.Next(); ;
                aCircuit = MakeAgent(destination, account, avatar, session, secureSession, circuitCode, position, clientIP.Address.ToString(), viewer, channel, mac, id0);
                success = LaunchAgentDirectly(simConnector, destination, aCircuit, flags, out reason);
                if (!success && m_GridService != null)
                {
                    // Try the fallback regions
                    List<GridRegion> fallbacks = m_GridService.GetFallbackRegions(account.ScopeID, destination.RegionLocX, destination.RegionLocY);
                    if (fallbacks != null)
                    {
                        foreach (GridRegion r in fallbacks)
                        {
                            success = LaunchAgentDirectly(simConnector, r, aCircuit, flags | TeleportFlags.ViaRegionID, out reason);
                            if (success)
                            {
                                where = "safe";
                                destination = r;
                                break;
                            }
                        }
                    }
                }
            }

            if (m_UserAgentService != null)
            {
                circuitCode = (uint)Util.RandomClass.Next(); ;
                aCircuit = MakeAgent(destination, account, avatar, session, secureSession, circuitCode, position, clientIP.Address.ToString(), viewer, channel, mac, id0);
                aCircuit.teleportFlags |= (uint)flags;
                success = LaunchAgentIndirectly(gatekeeper, destination, aCircuit, clientIP, out reason);
                if (!success && m_GridService != null)
                {
                    // Try the fallback regions
                    List<GridRegion> fallbacks = m_GridService.GetFallbackRegions(account.ScopeID, destination.RegionLocX, destination.RegionLocY);
                    if (fallbacks != null)
                    {
                        foreach (GridRegion r in fallbacks)
                        {
                            success = LaunchAgentIndirectly(gatekeeper, r, aCircuit, clientIP, out reason);
                            if (success)
                            {
                                where = "safe";
                                destination = r;
                                break;
                            }
                        }
                    }
                }
            }
            dest = destination;
            if (success)
                return aCircuit;
            else
                return null;
        }

        private AgentCircuitData MakeAgent(GridRegion region, UserAccount account, 
            AvatarAppearance avatar, UUID session, UUID secureSession, uint circuit, Vector3 position, 
            string ipaddress, string viewer, string channel, string mac, string id0)
        {
            AgentCircuitData aCircuit = new AgentCircuitData();

            aCircuit.AgentID = account.PrincipalID;
            if (avatar != null)
                aCircuit.Appearance = new AvatarAppearance(avatar);
            else
                aCircuit.Appearance = new AvatarAppearance();

            //aCircuit.BaseFolder = irrelevant
            aCircuit.CapsPath = CapsUtil.GetRandomCapsObjectPath();
            aCircuit.child = false; // the first login agent is root
            aCircuit.ChildrenCapSeeds = new Dictionary<ulong, string>();
            aCircuit.circuitcode = circuit;
            aCircuit.firstname = account.FirstName;
            //aCircuit.InventoryFolder = irrelevant
            aCircuit.lastname = account.LastName;
            aCircuit.SecureSessionID = secureSession;
            aCircuit.SessionID = session;
            aCircuit.startpos = position;
            aCircuit.IPAddress = ipaddress;
            aCircuit.Viewer = viewer;
            aCircuit.Channel = channel;
            aCircuit.Mac = mac;
            aCircuit.Id0 = id0;
            SetServiceURLs(aCircuit, account);

            return aCircuit;

            //m_UserAgentService.LoginAgentToGrid(aCircuit, GatekeeperServiceConnector, region, out reason);
            //if (simConnector.CreateAgent(region, aCircuit, 0, out reason))
            //    return aCircuit;

            //return null;

        }

        private void SetServiceURLs(AgentCircuitData aCircuit, UserAccount account)
        {
            aCircuit.ServiceURLs = new Dictionary<string, object>();
            if (account.ServiceURLs == null)
                return;

            // Old style: get the service keys from the DB 
            foreach (KeyValuePair<string, object> kvp in account.ServiceURLs)
            {
                if (kvp.Value != null)
                {
                    aCircuit.ServiceURLs[kvp.Key] = kvp.Value;

                    if (!aCircuit.ServiceURLs[kvp.Key].ToString().EndsWith("/"))
                        aCircuit.ServiceURLs[kvp.Key] = aCircuit.ServiceURLs[kvp.Key] + "/";
                }
            }

            // New style: service keys  start with SRV_; override the previous
            string[] keys = m_LoginServerConfig.GetKeys();

            if (keys.Length > 0)
            {
                bool newUrls = false;
                IEnumerable<string> serviceKeys = keys.Where(value => value.StartsWith("SRV_"));
                foreach (string serviceKey in serviceKeys)
                {
                    string keyName = serviceKey.Replace("SRV_", "");
                    string keyValue = m_LoginServerConfig.GetString(serviceKey, string.Empty);
                    if (!keyValue.EndsWith("/"))
                        keyValue = keyValue + "/";

                    if (!account.ServiceURLs.ContainsKey(keyName) || (account.ServiceURLs.ContainsKey(keyName) && account.ServiceURLs[keyName] != keyValue))
                    {
                        account.ServiceURLs[keyName] = keyValue;
                        newUrls = true;
                    }
                    aCircuit.ServiceURLs[keyName] = keyValue;

                    m_log.DebugFormat("[LLLOGIN SERVICE]: found new key {0} {1}", keyName, aCircuit.ServiceURLs[keyName]);
                }

                // The grid operator decided to override the defaults in the
                // [LoginService] configuration. Let's store the correct ones.
                if (newUrls)
                    m_UserAccountService.StoreUserAccount(account);
            }

        }

        private bool LaunchAgentDirectly(ISimulationService simConnector, GridRegion region, AgentCircuitData aCircuit, TeleportFlags flags, out string reason)
        {
            return simConnector.CreateAgent(region, aCircuit, (uint)flags, out reason);
        }

        private bool LaunchAgentIndirectly(GridRegion gatekeeper, GridRegion destination, AgentCircuitData aCircuit, IPEndPoint clientIP, out string reason)
        {
            m_log.Debug("[LLOGIN SERVICE] Launching agent at " + destination.RegionName);
            if (m_UserAgentService.LoginAgentToGrid(aCircuit, gatekeeper, destination, clientIP, out reason))
                return true;
            return false;
        }

        #region Console Commands
        private void RegisterCommands()
        {
            //MainConsole.Instance.Commands.AddCommand
            MainConsole.Instance.Commands.AddCommand("Users", false, "login level",
                    "login level <level>",
                    "Set the minimum user level to log in", HandleLoginCommand);

            MainConsole.Instance.Commands.AddCommand("Users", false, "login reset",
                    "login reset",
                    "Reset the login level to allow all users",
                    HandleLoginCommand);

            MainConsole.Instance.Commands.AddCommand("Users", false, "login text",
                    "login text <text>",
                    "Set the text users will see on login", HandleLoginCommand);

        }

        private void HandleLoginCommand(string module, string[] cmd)
        {
            string subcommand = cmd[1];

            switch (subcommand)
            {
                case "level":
                    // Set the minimum level to allow login 
                    // Useful to allow grid update without worrying about users.
                    // or fixing critical issues
                    //
                    if (cmd.Length > 2)
                        Int32.TryParse(cmd[2], out m_MinLoginLevel);
                    break;
                case "reset":
                    m_MinLoginLevel = 0;
                    break;
                case "text":
                    if (cmd.Length > 2)
                        m_WelcomeMessage = cmd[2];
                    break;
            }
        }
    }

    #endregion
}