aboutsummaryrefslogtreecommitdiffstats
path: root/src/gprs/sgsn_vty.c
blob: 63985bcd9ffccad65fe067d48bd946e581874917 (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
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
/*
 * (C) 2010-2016 by Harald Welte <laforge@gnumonks.org>
 * (C) 2010 by On-Waves
 * (C) 2015 by Holger Hans Peter Freyther
 * All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#include <inttypes.h>

#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
#include <osmocom/gsm/apn.h>

#include <osmocom/sgsn/debug.h>
#include <osmocom/sgsn/sgsn.h>
#include <osmocom/gprs/gprs_ns.h>
#include <osmocom/sgsn/gprs_gmm.h>
#include <osmocom/sgsn/gprs_sgsn.h>
#include <osmocom/sgsn/vty.h>
#include <osmocom/sgsn/gsup_client.h>

#include <osmocom/vty/command.h>
#include <osmocom/vty/vty.h>
#include <osmocom/vty/misc.h>
#include <osmocom/crypt/gprs_cipher.h>
#include <osmocom/abis/ipa.h>

#include <osmocom/gprs/gprs_bssgp.h>

#include <pdp.h>
#include <gtp.h>

#include "../../bscconfig.h"

#ifdef BUILD_IU
#include <osmocom/ranap/iu_client.h>
#endif

extern void *tall_bsc_ctx;

static struct sgsn_config *g_cfg = NULL;

const struct value_string sgsn_auth_pol_strs[] = {
	{ SGSN_AUTH_POLICY_OPEN,	"accept-all" },
	{ SGSN_AUTH_POLICY_CLOSED,	"closed" },
	{ SGSN_AUTH_POLICY_ACL_ONLY,    "acl-only" },
	{ SGSN_AUTH_POLICY_REMOTE,      "remote" },
	{ 0, NULL }
};

/* Section 11.2.2 / Table 11.3a GPRS Mobility management timers – MS side */
#define GSM0408_T3312_SECS	(10*60)	/* periodic RAU interval, default 54min */

/* Section 11.2.2 / Table 11.4 MM timers netwokr side */
#define GSM0408_T3322_SECS	6	/* DETACH_REQ -> DETACH_ACC */
#define GSM0408_T3350_SECS	6	/* waiting for ATT/RAU/TMSI COMPL */
#define GSM0408_T3360_SECS	6	/* waiting for AUTH/CIPH RESP */
#define GSM0408_T3370_SECS	6	/* waiting for ID RESP */

/* Section 11.2.2 / Table 11.4a MM timers network side */
#define GSM0408_T3313_SECS	30	/* waiting for paging response */
#define GSM0408_T3314_SECS	44	/* force to STBY on expiry, Ready timer */
#define GSM0408_T3316_SECS	44

/* Section 11.3 / Table 11.2d Timers of Session Management - network side */
#define GSM0408_T3385_SECS	8	/* wait for ACT PDP CTX REQ */
#define GSM0408_T3386_SECS	8	/* wait for MODIFY PDP CTX ACK */
#define GSM0408_T3395_SECS	8	/* wait for DEACT PDP CTX ACK */
#define GSM0408_T3397_SECS	8	/* wait for DEACT AA PDP CTX ACK */

#define DECLARE_TIMER(number, doc) \
    DEFUN(cfg_sgsn_T##number,					\
      cfg_sgsn_T##number##_cmd,					\
      "timer t" #number  " <0-65535>",				\
      "Configure GPRS Timers\n"					\
      doc "\nTimer Value in seconds\n")				\
{								\
	int value = atoi(argv[0]);				\
								\
	if (value < 0 || value > 65535) {			\
		vty_out(vty, "Timer value %s out of range.%s",	\
		        argv[0], VTY_NEWLINE);			\
		return CMD_WARNING;				\
	}							\
								\
	g_cfg->timers.T##number = value;			\
	return CMD_SUCCESS;					\
}

DECLARE_TIMER(3312, "Periodic RA Update timer (s)")
DECLARE_TIMER(3322, "Detach request -> accept timer (s)")
DECLARE_TIMER(3350, "Waiting for ATT/RAU/TMSI_COMPL timer (s)")
DECLARE_TIMER(3360, "Waiting for AUTH/CIPH response timer (s)")
DECLARE_TIMER(3370, "Waiting for IDENTITY response timer (s)")

DECLARE_TIMER(3313, "Waiting for paging response timer (s)")
DECLARE_TIMER(3314, "Force to STANDBY on expiry timer (s)")
DECLARE_TIMER(3316, "AA-Ready timer (s)")

DECLARE_TIMER(3385, "Wait for ACT PDP CTX REQ timer (s)")
DECLARE_TIMER(3386, "Wait for MODIFY PDP CTX ACK timer (s)")
DECLARE_TIMER(3395, "Wait for DEACT PDP CTX ACK timer (s)")
DECLARE_TIMER(3397, "Wait for DEACT AA PDP CTX ACK timer (s)")

char *gprs_pdpaddr2str(uint8_t *pdpa, uint8_t len)
{
	static char str[INET6_ADDRSTRLEN + 10];

	if (!pdpa || len < 2)
		return "none";

	switch (pdpa[0] & 0x0f) {
	case PDP_TYPE_ORG_IETF:
		switch (pdpa[1]) {
		case PDP_TYPE_N_IETF_IPv4:
			if (len < 2 + 4)
				break;
			strcpy(str, "IPv4 ");
			inet_ntop(AF_INET, pdpa+2, str+5, sizeof(str)-5);
			return str;
		case PDP_TYPE_N_IETF_IPv6:
			if (len < 2 + 8)
				break;
			strcpy(str, "IPv6 ");
			inet_ntop(AF_INET6, pdpa+2, str+5, sizeof(str)-5);
			return str;
		default:
			break;
		}
		break;
	case PDP_TYPE_ORG_ETSI:
		if (pdpa[1] == PDP_TYPE_N_ETSI_PPP)
			return "PPP";
		break;
	default:
		break;
	}

	return "invalid";
}

static struct cmd_node sgsn_node = {
	SGSN_NODE,
	"%s(config-sgsn)# ",
	1,
};

static int config_write_sgsn(struct vty *vty)
{
	struct sgsn_ggsn_ctx *gctx;
	struct imsi_acl_entry *acl;
	struct apn_ctx *actx;
	struct ares_addr_node *server;

	vty_out(vty, "sgsn%s", VTY_NEWLINE);

	vty_out(vty, " gtp local-ip %s%s",
		inet_ntoa(g_cfg->gtp_listenaddr.sin_addr), VTY_NEWLINE);

	llist_for_each_entry(gctx, &sgsn_ggsn_ctxts, list) {
		if (gctx->id == UINT32_MAX)
			continue;

		vty_out(vty, " ggsn %u remote-ip %s%s", gctx->id,
			inet_ntoa(gctx->remote_addr), VTY_NEWLINE);
		vty_out(vty, " ggsn %u gtp-version %u%s", gctx->id,
			gctx->gtp_version, VTY_NEWLINE);
		if (gctx->echo_interval != -1)
			vty_out(vty, " ggsn %u echo-interval %"PRId32"%s",
				gctx->id, gctx->echo_interval, VTY_NEWLINE);
		else
			vty_out(vty, " ggsn %u no echo-interval%s",
				gctx->id, VTY_NEWLINE);
	}

	if (sgsn->cfg.dynamic_lookup)
		vty_out(vty, " ggsn dynamic%s", VTY_NEWLINE);

	for (server = sgsn->ares_servers; server; server = server->next)
		vty_out(vty, " grx-dns-add %s%s", inet_ntoa(server->addr.addr4), VTY_NEWLINE);

	if (g_cfg->cipher != GPRS_ALGO_GEA0)
		vty_out(vty, " encryption %s%s",
			get_value_string(gprs_cipher_names, g_cfg->cipher),
			VTY_NEWLINE);
	if (g_cfg->gsup_server_addr.sin_addr.s_addr)
		vty_out(vty, " gsup remote-ip %s%s",
			inet_ntoa(g_cfg->gsup_server_addr.sin_addr), VTY_NEWLINE);
	if (g_cfg->gsup_server_port)
		vty_out(vty, " gsup remote-port %d%s",
			g_cfg->gsup_server_port, VTY_NEWLINE);
	vty_out(vty, " auth-policy %s%s",
		get_value_string(sgsn_auth_pol_strs, g_cfg->auth_policy),
		VTY_NEWLINE);

	vty_out(vty, " gsup oap-id %d%s",
		(int)g_cfg->oap.client_id, VTY_NEWLINE);
	if (g_cfg->oap.secret_k_present != 0)
		vty_out(vty, " gsup oap-k %s%s",
			osmo_hexdump_nospc(g_cfg->oap.secret_k, sizeof(g_cfg->oap.secret_k)),
			VTY_NEWLINE);
	if (g_cfg->oap.secret_opc_present != 0)
		vty_out(vty, " gsup oap-opc %s%s",
			osmo_hexdump_nospc(g_cfg->oap.secret_opc, sizeof(g_cfg->oap.secret_opc)),
			VTY_NEWLINE);

	llist_for_each_entry(acl, &g_cfg->imsi_acl, list)
		vty_out(vty, " imsi-acl add %s%s", acl->imsi, VTY_NEWLINE);

	if (llist_empty(&sgsn_apn_ctxts))
		vty_out(vty, " ! apn * ggsn 0%s", VTY_NEWLINE);
	llist_for_each_entry(actx, &sgsn_apn_ctxts, list) {
		if (strlen(actx->imsi_prefix) > 0)
			vty_out(vty, " apn %s imsi-prefix %s ggsn %u%s",
				actx->name, actx->imsi_prefix, actx->ggsn->id,
				VTY_NEWLINE);
		else
			vty_out(vty, " apn %s ggsn %u%s", actx->name,
				actx->ggsn->id, VTY_NEWLINE);
	}

	if (g_cfg->cdr.filename)
		vty_out(vty, " cdr filename %s%s", g_cfg->cdr.filename, VTY_NEWLINE);
	else
		vty_out(vty, " no cdr filename%s", VTY_NEWLINE);
	if (g_cfg->cdr.trap)
		vty_out(vty, " cdr trap%s", VTY_NEWLINE);
	else
		vty_out(vty, " no cdr trap%s", VTY_NEWLINE);
	vty_out(vty, " cdr interval %d%s", g_cfg->cdr.interval, VTY_NEWLINE);

	vty_out(vty, " timer t3312 %d%s", g_cfg->timers.T3312, VTY_NEWLINE);
	vty_out(vty, " timer t3322 %d%s", g_cfg->timers.T3322, VTY_NEWLINE);
	vty_out(vty, " timer t3350 %d%s", g_cfg->timers.T3350, VTY_NEWLINE);
	vty_out(vty, " timer t3360 %d%s", g_cfg->timers.T3360, VTY_NEWLINE);
	vty_out(vty, " timer t3370 %d%s", g_cfg->timers.T3370, VTY_NEWLINE);
	vty_out(vty, " timer t3313 %d%s", g_cfg->timers.T3313, VTY_NEWLINE);
	vty_out(vty, " timer t3314 %d%s", g_cfg->timers.T3314, VTY_NEWLINE);
	vty_out(vty, " timer t3316 %d%s", g_cfg->timers.T3316, VTY_NEWLINE);
	vty_out(vty, " timer t3385 %d%s", g_cfg->timers.T3385, VTY_NEWLINE);
	vty_out(vty, " timer t3386 %d%s", g_cfg->timers.T3386, VTY_NEWLINE);
	vty_out(vty, " timer t3395 %d%s", g_cfg->timers.T3395, VTY_NEWLINE);
	vty_out(vty, " timer t3397 %d%s", g_cfg->timers.T3397, VTY_NEWLINE);

	if (g_cfg->pcomp_rfc1144.active) {
		vty_out(vty, " compression rfc1144 active slots %d%s",
			g_cfg->pcomp_rfc1144.s01 + 1, VTY_NEWLINE);
	} else if (g_cfg->pcomp_rfc1144.passive) {
		vty_out(vty, " compression rfc1144 passive%s", VTY_NEWLINE);
	} else
		vty_out(vty, " no compression rfc1144%s", VTY_NEWLINE);

	if (g_cfg->dcomp_v42bis.active && g_cfg->dcomp_v42bis.p0 == 1) {
		vty_out(vty,
			" compression v42bis active direction sgsn codewords %d strlen %d%s",
			g_cfg->dcomp_v42bis.p1, g_cfg->dcomp_v42bis.p2,
			VTY_NEWLINE);
	} else if (g_cfg->dcomp_v42bis.active && g_cfg->dcomp_v42bis.p0 == 2) {
		vty_out(vty,
			" compression v42bis active direction ms codewords %d strlen %d%s",
			g_cfg->dcomp_v42bis.p1, g_cfg->dcomp_v42bis.p2,
			VTY_NEWLINE);
	} else if (g_cfg->dcomp_v42bis.active && g_cfg->dcomp_v42bis.p0 == 3) {
		vty_out(vty,
			" compression v42bis active direction both codewords %d strlen %d%s",
			g_cfg->dcomp_v42bis.p1, g_cfg->dcomp_v42bis.p2,
			VTY_NEWLINE);
	} else if (g_cfg->dcomp_v42bis.passive) {
		vty_out(vty, " compression v42bis passive%s", VTY_NEWLINE);
	} else
		vty_out(vty, " no compression v42bis%s", VTY_NEWLINE);

#ifdef BUILD_IU
	ranap_iu_vty_config_write(vty, " ");
#endif

	return CMD_SUCCESS;
}

#define SGSN_STR	"Configure the SGSN\n"
#define GGSN_STR	"Configure the GGSN information\n"

DEFUN(cfg_sgsn, cfg_sgsn_cmd,
	"sgsn",
	SGSN_STR)
{
	vty->node = SGSN_NODE;
	return CMD_SUCCESS;
}

DEFUN(cfg_sgsn_bind_addr, cfg_sgsn_bind_addr_cmd,
	"gtp local-ip A.B.C.D",
	"GTP Parameters\n"
	"Set the IP address for the local GTP bind for the Gp interface (towards the GGSNs)."
	" Note: in case you would like to run the GGSN on the same machine as the SGSN, you can not run"
	" both on the same IP address, since both sides are specified to use the same GTP port numbers"
	" (" OSMO_STRINGIFY_VAL(GTP1C_PORT) " and " OSMO_STRINGIFY_VAL(GTP1U_PORT) ")."
	" For example, you could use 127.0.0.1 for the SGSN and 127.0.0.2 for the GGSN in such"
	" situations.\n"
	"IPv4 Address\n")
{
	inet_aton(argv[0], &g_cfg->gtp_listenaddr.sin_addr);

	return CMD_SUCCESS;
}

DEFUN(cfg_ggsn_remote_ip, cfg_ggsn_remote_ip_cmd,
	"ggsn <0-255> remote-ip A.B.C.D",
	GGSN_STR "GGSN Number\n"
	"Configure this static GGSN to use the specified remote IP address.\n"
	"IPv4 Address\n")
{
	uint32_t id = atoi(argv[0]);
	struct sgsn_ggsn_ctx *ggc = sgsn_ggsn_ctx_find_alloc(id);

	inet_aton(argv[1], &ggc->remote_addr);

	return CMD_SUCCESS;
}

#if 0
DEFUN(cfg_ggsn_remote_port, cfg_ggsn_remote_port_cmd,
	"ggsn <0-255> remote-port <0-65535>",
	"")
{
	uint32_t id = atoi(argv[0]);
	struct sgsn_ggsn_ctx *ggc = sgsn_ggsn_ctx_find_alloc(id);
	uint16_t port = atoi(argv[1]);

}
#endif

DEFUN(cfg_ggsn_gtp_version, cfg_ggsn_gtp_version_cmd,
	"ggsn <0-255> gtp-version (0|1)",
	GGSN_STR "GGSN Number\n" "GTP Version\n"
	"Version 0\n" "Version 1\n")
{
	uint32_t id = atoi(argv[0]);
	struct sgsn_ggsn_ctx *ggc = sgsn_ggsn_ctx_find_alloc(id);

	if (atoi(argv[1]))
		ggc->gtp_version = 1;
	else
		ggc->gtp_version = 0;

	return CMD_SUCCESS;
}

/* Seee 3GPP TS 29.060 section 7.2.1 */
DEFUN(cfg_ggsn_echo_interval, cfg_ggsn_echo_interval_cmd,
	"ggsn <0-255> echo-interval <1-36000>",
	GGSN_STR "GGSN Number\n"
	"Send an echo request to this static GGSN every interval.\n"
	"Interval between echo requests in seconds.\n")
{
	uint32_t id = atoi(argv[0]);
	struct sgsn_ggsn_ctx *ggc = sgsn_ggsn_ctx_find_alloc(id);

	ggc->echo_interval = atoi(argv[1]);

	if (ggc->echo_interval < 60)
		vty_out(vty, "%% 3GPP TS 29.060 section states inteval should " \
			     "not be lower than 60 seconds, use this value for " \
			     "testing purposes only!%s", VTY_NEWLINE);

	sgsn_ggsn_ctx_check_echo_timer(ggc);
	return CMD_SUCCESS;
}

DEFUN(cfg_ggsn_no_echo_interval, cfg_ggsn_no_echo_interval_cmd,
	"ggsn <0-255> no echo-interval",
	GGSN_STR "GGSN Number\n"
	NO_STR "Send an echo request to this static GGSN every interval.\n")
{
	uint32_t id = atoi(argv[0]);
	struct sgsn_ggsn_ctx *ggc = sgsn_ggsn_ctx_find_alloc(id);

	ggc->echo_interval = -1;
	sgsn_ggsn_ctx_check_echo_timer(ggc);

	return CMD_SUCCESS;
}

DEFUN(cfg_ggsn_dynamic_lookup, cfg_ggsn_dynamic_lookup_cmd,
	"ggsn dynamic",
	GGSN_STR
	"Enable dynamic resolving of GGSNs based on DNS resolving the APN name like in a GRX-style setup."
	" Changing this setting requires a restart.\n")
{
	sgsn->cfg.dynamic_lookup = 1;
	return CMD_SUCCESS;
}

DEFUN(cfg_grx_ggsn, cfg_grx_ggsn_cmd,
	"grx-dns-add A.B.C.D",
	"Use the specified IP address for DNS-resolving the AP names to GGSN IP addresses\n"
	"IPv4 address\n")
{
	struct ares_addr_node *node = talloc_zero(tall_bsc_ctx, struct ares_addr_node);
	node->family = AF_INET;
	inet_aton(argv[0], &node->addr.addr4);

	node->next = sgsn->ares_servers;
	sgsn->ares_servers = node;
	return CMD_SUCCESS;
}

#define APN_STR	"Configure the information per APN\n"
#define APN_GW_STR "The APN gateway name optionally prefixed by '*' (wildcard)\n"

static int add_apn_ggsn_mapping(struct vty *vty, const char *apn_str,
				const char *imsi_prefix, int ggsn_id)
{
	struct apn_ctx *actx;
	struct sgsn_ggsn_ctx *ggsn;

	ggsn = sgsn_ggsn_ctx_by_id(ggsn_id);
	if (ggsn == NULL) {
		vty_out(vty, "%% a GGSN with id %d has not been defined%s",
			ggsn_id, VTY_NEWLINE);
		return CMD_WARNING;
	}

	actx = sgsn_apn_ctx_find_alloc(apn_str, imsi_prefix);
	if (!actx) {
		vty_out(vty, "%% unable to create APN context for %s/%s%s",
			apn_str, imsi_prefix, VTY_NEWLINE);
		return CMD_WARNING;
	}

	actx->ggsn = ggsn;

	return CMD_SUCCESS;
}

DEFUN(cfg_apn_ggsn, cfg_apn_ggsn_cmd,
	"apn APNAME ggsn <0-255>",
	APN_STR APN_GW_STR
	"Select the GGSN to use for the given APN gateway prefix\n"
	"The GGSN id")
{

	return add_apn_ggsn_mapping(vty, argv[0], "", atoi(argv[1]));
}

DEFUN(cfg_apn_imsi_ggsn, cfg_apn_imsi_ggsn_cmd,
	"apn APNAME imsi-prefix IMSIPRE ggsn <0-255>",
	APN_STR APN_GW_STR
	"Select the GGSN to use for the given APN gateway prefix if and only if the IMSI matches the"
	" given prefix.\n"
	"An IMSI prefix\n"
	"Select the GGSN to use when APN gateway and IMSI prefix match\n"
	"The GGSN id")
{

	return add_apn_ggsn_mapping(vty, argv[0], argv[1], atoi(argv[2]));
}

const struct value_string gprs_mm_st_strs[] = {
	{ GMM_DEREGISTERED, "DEREGISTERED" },
	{ GMM_COMMON_PROC_INIT, "COMMON PROCEDURE (INIT)" },
	{ GMM_REGISTERED_NORMAL, "REGISTERED (NORMAL)" },
	{ GMM_REGISTERED_SUSPENDED, "REGISTERED (SUSPENDED)" },
	{ GMM_DEREGISTERED_INIT, "DEREGISTERED (INIT)" },
	{ 0, NULL }
};

char *sgsn_gtp_ntoa(struct ul16_t *ul)
{
	struct in_addr ia;

	if (gsna2in_addr(&ia, ul) != 0)
		return "UNKNOWN";

	return inet_ntoa(ia);
}

static void vty_dump_pdp(struct vty *vty, const char *pfx,
			 struct sgsn_pdp_ctx *pdp)
{
	const char *imsi = pdp->mm ? pdp->mm->imsi : "(detaching)";
	vty_out(vty, "%sPDP Context IMSI: %s, SAPI: %u, NSAPI: %u, TI: %u%s",
		pfx, imsi, pdp->sapi, pdp->nsapi, pdp->ti, VTY_NEWLINE);
	if (pdp->lib) {
		char apnbuf[APN_MAXLEN + 1];
		vty_out(vty, "%s  APN: %s%s", pfx,
			osmo_apn_to_str(apnbuf, pdp->lib->apn_use.v, pdp->lib->apn_use.l),
			VTY_NEWLINE);
		vty_out(vty, "%s  PDP Address: %s%s", pfx,
			gprs_pdpaddr2str(pdp->lib->eua.v, pdp->lib->eua.l),
			VTY_NEWLINE);
		vty_out(vty, "%s  GTPv%d Local Control(%s / TEIC: 0x%08x) ", pfx, pdp->lib->version,
			sgsn_gtp_ntoa(&pdp->lib->gsnlc), pdp->lib->teic_own);
		vty_out(vty, "Data(%s / TEID: 0x%08x)%s",
			sgsn_gtp_ntoa(&pdp->lib->gsnlu), pdp->lib->teid_own, VTY_NEWLINE);
		vty_out(vty, "%s  GTPv%d Remote Control(%s / TEIC: 0x%08x) ", pfx, pdp->lib->version,
			sgsn_gtp_ntoa(&pdp->lib->gsnrc), pdp->lib->teic_gn);
		vty_out(vty, "Data(%s / TEID: 0x%08x)%s",
			sgsn_gtp_ntoa(&pdp->lib->gsnru), pdp->lib->teid_gn, VTY_NEWLINE);
	}

	vty_out_rate_ctr_group(vty, " ", pdp->ctrg);
}

static void vty_dump_mmctx(struct vty *vty, const char *pfx,
			   struct sgsn_mm_ctx *mm, int pdp)
{
	vty_out(vty, "%sMM Context for IMSI %s, IMEI %s, P-TMSI %08x%s",
		pfx, mm->imsi, mm->imei, mm->p_tmsi, VTY_NEWLINE);
	vty_out(vty, "%s  MSISDN: %s, TLLI: %08x%s HLR: %s",
		pfx, mm->msisdn, mm->gb.tlli, mm->hlr, VTY_NEWLINE);
	vty_out(vty, "%s  MM State: %s, Routeing Area: %s, Cell ID: %u%s",
		pfx, get_value_string(gprs_mm_st_strs, mm->gmm_state),
		osmo_rai_name(&mm->ra), mm->gb.cell_id, VTY_NEWLINE);

	vty_out_rate_ctr_group(vty, " ", mm->ctrg);

	if (pdp) {
		struct sgsn_pdp_ctx *pdp;

		llist_for_each_entry(pdp, &mm->pdp_list, list)
			vty_dump_pdp(vty, "  ", pdp);
	}
}

DEFUN(show_sgsn, show_sgsn_cmd, "show sgsn",
      SHOW_STR "Display information about the SGSN")
{
	if (sgsn->gsup_client) {
		struct ipa_client_conn *link = sgsn->gsup_client->link;
		vty_out(vty,
			"  Remote authorization: %sconnected to %s:%d via GSUP%s",
			sgsn->gsup_client->is_connected ? "" : "not ",
			link->addr, link->port,
			VTY_NEWLINE);
	}
	if (sgsn->gsn)
		vty_out(vty, "  GSN: signalling %s, user traffic %s%s",
			inet_ntoa(sgsn->gsn->gsnc), inet_ntoa(sgsn->gsn->gsnu), VTY_NEWLINE);

	/* FIXME: statistics */
	return CMD_SUCCESS;
}

#define MMCTX_STR "MM Context\n"
#define INCLUDE_PDP_STR "Include PDP Context Information\n"

#if 0
DEFUN(show_mmctx_tlli, show_mmctx_tlli_cmd,
	"show mm-context tlli HEX [pdp]",
	SHOW_STR MMCTX_STR "Identify by TLLI\n" "TLLI\n" INCLUDE_PDP_STR)
{
	uint32_t tlli;
	struct sgsn_mm_ctx *mm;

	tlli = strtoul(argv[0], NULL, 16);
	mm = sgsn_mm_ctx_by_tlli(tlli);
	if (!mm) {
		vty_out(vty, "No MM context for TLLI %08x%s",
			tlli, VTY_NEWLINE);
		return CMD_WARNING;
	}
	vty_dump_mmctx(vty, "", mm, argv[1] ? 1 : 0);
	return CMD_SUCCESS;
}
#endif

DEFUN(swow_mmctx_imsi, show_mmctx_imsi_cmd,
	"show mm-context imsi IMSI [pdp]",
	SHOW_STR MMCTX_STR "Identify by IMSI\n" "IMSI of the MM Context\n"
	INCLUDE_PDP_STR)
{
	struct sgsn_mm_ctx *mm;

	mm = sgsn_mm_ctx_by_imsi(argv[0]);
	if (!mm) {
		vty_out(vty, "No MM context for IMSI %s%s",
			argv[0], VTY_NEWLINE);
		return CMD_WARNING;
	}
	vty_dump_mmctx(vty, "", mm, argv[1] ? 1 : 0);
	return CMD_SUCCESS;
}

DEFUN(swow_mmctx_all, show_mmctx_all_cmd,
	"show mm-context all [pdp]",
	SHOW_STR MMCTX_STR "All MM Contexts\n" INCLUDE_PDP_STR)
{
	struct sgsn_mm_ctx *mm;

	llist_for_each_entry(mm, &sgsn_mm_ctxts, list)
		vty_dump_mmctx(vty, "", mm, argv[0] ? 1 : 0);

	return CMD_SUCCESS;
}

DEFUN(show_pdpctx_all, show_pdpctx_all_cmd,
	"show pdp-context all",
	SHOW_STR "Display information on PDP Context\n" "Show everything\n")
{
	struct sgsn_pdp_ctx *pdp;

	llist_for_each_entry(pdp, &sgsn_pdp_ctxts, g_list)
		vty_dump_pdp(vty, "", pdp);

	return CMD_SUCCESS;
}


DEFUN(imsi_acl, cfg_imsi_acl_cmd,
	"imsi-acl (add|del) IMSI",
	"Access Control List of foreign IMSIs\n"
	"Add IMSI to ACL\n"
	"Remove IMSI from ACL\n"
	"IMSI of subscriber\n")
{
	char imsi_sanitized[GSM23003_IMSI_MAX_DIGITS+1];
	const char *op = argv[0];
	const char *imsi = imsi_sanitized;
	int rc;

	/* Sanitize IMSI */
	if (strlen(argv[1]) > GSM23003_IMSI_MAX_DIGITS) {
		vty_out(vty, "%% IMSI (%s) too long -- ignored!%s",
			argv[1], VTY_NEWLINE);
		return CMD_WARNING;
	}
	memset(imsi_sanitized, '0', sizeof(imsi_sanitized));
	strcpy(imsi_sanitized+GSM23003_IMSI_MAX_DIGITS-strlen(argv[1]),argv[1]);

	if (!strcmp(op, "add"))
		rc = sgsn_acl_add(imsi, g_cfg);
	else
		rc = sgsn_acl_del(imsi, g_cfg);

	if (rc < 0) {
		vty_out(vty, "%% unable to %s ACL%s", op, VTY_NEWLINE);
		return CMD_WARNING;
	}

	return CMD_SUCCESS;
}

DEFUN(cfg_encrypt, cfg_encrypt_cmd,
      "encryption (GEA0|GEA1|GEA2|GEA3|GEA4)",
      "Set encryption algorithm for SGSN\n"
      "Use GEA0 (no encryption)\n"
      "Use GEA1\nUse GEA2\nUse GEA3\nUse GEA4\n")
{
	enum gprs_ciph_algo c = get_string_value(gprs_cipher_names, argv[0]);
	if (c != GPRS_ALGO_GEA0) {
		if (!gprs_cipher_supported(c)) {
			vty_out(vty, "%% cipher %s is unsupported in current version%s", argv[0], VTY_NEWLINE);
			return CMD_WARNING;
		}

		if (!g_cfg->require_authentication) {
			vty_out(vty, "%% unable to use encryption %s without authentication: please adjust auth-policy%s",
				argv[0], VTY_NEWLINE);
			return CMD_WARNING;
		}
	}

	g_cfg->cipher = c;

	return CMD_SUCCESS;
}

DEFUN(cfg_auth_policy, cfg_auth_policy_cmd,
	"auth-policy (accept-all|closed|acl-only|remote)",
	"Configure the Authorization policy of the SGSN. This setting determines which subscribers are"
	" permitted to register to the network.\n"
	"Accept all IMSIs (DANGEROUS)\n"
	"Accept only home network subscribers or those in the ACL\n"
	"Accept only subscribers in the ACL\n"
	"Use remote subscription data only (HLR)\n")
{
	int val = get_string_value(sgsn_auth_pol_strs, argv[0]);
	OSMO_ASSERT(val >= SGSN_AUTH_POLICY_OPEN && val <= SGSN_AUTH_POLICY_REMOTE);
	g_cfg->auth_policy = val;
	g_cfg->require_authentication = (val == SGSN_AUTH_POLICY_REMOTE);
	g_cfg->require_update_location = (val == SGSN_AUTH_POLICY_REMOTE);

	return CMD_SUCCESS;
}

/* Subscriber */
#include <osmocom/sgsn/gprs_subscriber.h>

static void subscr_dump_full_vty(struct vty *vty, struct gprs_subscr *gsub, int pending)
{
#if 0
	char expire_time[200];
#endif
	struct gsm_auth_tuple *at;
	int at_idx;
	struct sgsn_subscriber_pdp_data *pdp;

	vty_out(vty, "    Authorized: %d%s",
		gsub->authorized, VTY_NEWLINE);
	vty_out(vty, "    LAC: %d/0x%x%s",
		gsub->lac, gsub->lac, VTY_NEWLINE);
	vty_out(vty, "    IMSI: %s%s", gsub->imsi, VTY_NEWLINE);
	if (gsub->tmsi != GSM_RESERVED_TMSI)
		vty_out(vty, "    TMSI: %08X%s", gsub->tmsi,
			VTY_NEWLINE);
	if (gsub->sgsn_data->msisdn_len > 0)
		vty_out(vty, "    MSISDN (BCD): %s%s",
			osmo_hexdump(gsub->sgsn_data->msisdn,
				     gsub->sgsn_data->msisdn_len),
			VTY_NEWLINE);

	if (strlen(gsub->imei) > 0)
		vty_out(vty, "    IMEI: %s%s", gsub->imei, VTY_NEWLINE);

	for (at_idx = 0; at_idx < ARRAY_SIZE(gsub->sgsn_data->auth_triplets);
	     at_idx++) {
		at = &gsub->sgsn_data->auth_triplets[at_idx];
		if (at->key_seq == GSM_KEY_SEQ_INVAL)
			continue;

		vty_out(vty, "    A3A8 tuple (used %d times): ",
			at->use_count);
		vty_out(vty, "     CKSN: %d, ",
			at->key_seq);
		if (at->vec.auth_types & OSMO_AUTH_TYPE_GSM) {
			vty_out(vty, "RAND: %s, ",
				osmo_hexdump(at->vec.rand,
					     sizeof(at->vec.rand)));
			vty_out(vty, "SRES: %s, ",
				osmo_hexdump(at->vec.sres,
					     sizeof(at->vec.sres)));
			vty_out(vty, "Kc: %s%s",
				osmo_hexdump(at->vec.kc,
					     sizeof(at->vec.kc)), VTY_NEWLINE);
		}
		if (at->vec.auth_types & OSMO_AUTH_TYPE_UMTS) {
			vty_out(vty, "     AUTN: %s, ",
				osmo_hexdump(at->vec.autn,
					     sizeof(at->vec.autn)));
			vty_out(vty, "RES: %s, ",
				osmo_hexdump(at->vec.res, at->vec.res_len));
			vty_out(vty, "IK: %s, ",
				osmo_hexdump(at->vec.ik, sizeof(at->vec.ik)));
			vty_out(vty, "CK: %s, ",
				osmo_hexdump(at->vec.ck, sizeof(at->vec.ck)));
		}
	}

	llist_for_each_entry(pdp, &gsub->sgsn_data->pdp_list, list) {
		vty_out(vty, "    PDP info: Id: %d, Type: 0x%04x, APN: '%s' QoS: %s%s",
			pdp->context_id, pdp->pdp_type, pdp->apn_str,
			osmo_hexdump(pdp->qos_subscribed, pdp->qos_subscribed_len),
			VTY_NEWLINE);
	}

#if 0
	/* print the expiration time of a subscriber */
	if (gsub->expire_lu) {
		strftime(expire_time, sizeof(expire_time),
			 "%a, %d %b %Y %T %z", localtime(&gsub->expire_lu));
		expire_time[sizeof(expire_time) - 1] = '\0';
		vty_out(vty, "    Expiration Time: %s%s", expire_time, VTY_NEWLINE);
	}
#endif

	if (gsub->flags)
		vty_out(vty, "    Flags: %s%s%s%s%s%s",
			gsub->flags & GPRS_SUBSCRIBER_FIRST_CONTACT ?
			"FIRST_CONTACT " : "",
			gsub->flags & GPRS_SUBSCRIBER_CANCELLED ?
			"CANCELLED " : "",
			gsub->flags & GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING ?
			"UPDATE_LOCATION_PENDING " : "",
			gsub->flags & GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING ?
			"AUTH_INFO_PENDING " : "",
			gsub->flags & GPRS_SUBSCRIBER_ENABLE_PURGE ?
			"ENABLE_PURGE " : "",
			VTY_NEWLINE);

	vty_out(vty, "    Use count: %u%s", gsub->use_count, VTY_NEWLINE);
}

DEFUN_HIDDEN(reset_sgsn_state,
      reset_sgsn_state_cmd,
      "reset sgsn state",
      "Remove all known subscriber, MM ctx and flush BSSGP queues Useful when running tests against the SGSN")
{
	struct gprs_subscr *subscr, *tmp_subscr;
	struct sgsn_mm_ctx *mm, *tmp_mm;

	llist_for_each_entry_safe(mm, tmp_mm, &sgsn_mm_ctxts, list)
	{
		gsm0408_gprs_access_cancelled(mm, SGSN_ERROR_CAUSE_NONE);
	}
	vty_out(vty, "Cancelled MM Ctx. %s", VTY_NEWLINE);

	llist_for_each_entry_safe(subscr, tmp_subscr, gprs_subscribers, entry) {
		gprs_subscr_get(subscr);
		gprs_subscr_cancel(subscr);
		gprs_subscr_put(subscr);
	}
	vty_out(vty, "Removed all gprs subscribers.%s", VTY_NEWLINE);

	bssgp_flush_all_queues();
	vty_out(vty, "Flushed all BSSGPs queues.%s", VTY_NEWLINE);

	gtp_clear_queues(sgsn->gsn);
	vty_out(vty, "Flushed rx & tx queus towards the GGSN.%s", VTY_NEWLINE);

	/* remove all queues to bssgp */
	return CMD_SUCCESS;
}

DEFUN(show_subscr_cache,
      show_subscr_cache_cmd,
      "show subscriber cache",
	SHOW_STR "Show information about subscribers\n"
	"Display contents of subscriber cache\n")
{
	struct gprs_subscr *subscr;

	llist_for_each_entry(subscr, gprs_subscribers, entry) {
		vty_out(vty, "  Subscriber:%s", VTY_NEWLINE);
		subscr_dump_full_vty(vty, subscr, 0);
	}

	return CMD_SUCCESS;
}

#define UPDATE_SUBSCR_STR "update-subscriber imsi IMSI "
#define UPDATE_SUBSCR_HELP "Update subscriber list\n" \
	"Use the IMSI to select the subscriber\n" \
	"The IMSI\n"

#define UPDATE_SUBSCR_INSERT_HELP "Insert data into the subscriber record\n"

DEFUN(update_subscr_insert_auth_triplet, update_subscr_insert_auth_triplet_cmd,
	UPDATE_SUBSCR_STR "insert auth-triplet <1-5> sres SRES rand RAND kc KC",
	UPDATE_SUBSCR_HELP
	UPDATE_SUBSCR_INSERT_HELP
	"Update authentication triplet\n"
	"Triplet index\n"
	"Set SRES value\nSRES value (4 byte) in hex\n"
	"Set RAND value\nRAND value (16 byte) in hex\n"
	"Set Kc value\nKc value (8 byte) in hex\n")
{
	const char *imsi = argv[0];
	const int cksn = atoi(argv[1]) - 1;
	const char *sres_str = argv[2];
	const char *rand_str = argv[3];
	const char *kc_str = argv[4];
	struct gsm_auth_tuple at = {0,};

	struct gprs_subscr *subscr;

	subscr = gprs_subscr_get_by_imsi(imsi);
	if (!subscr) {
		vty_out(vty, "%% unable get subscriber record for %s%s",
			imsi, VTY_NEWLINE);
		return CMD_WARNING;
	}

	OSMO_ASSERT(subscr->sgsn_data);

	if (osmo_hexparse(sres_str, &at.vec.sres[0], sizeof(at.vec.sres)) < 0) {
		vty_out(vty, "%% invalid SRES value '%s'%s",
			sres_str, VTY_NEWLINE);
		goto failed;
	}
	if (osmo_hexparse(rand_str, &at.vec.rand[0], sizeof(at.vec.rand)) < 0) {
		vty_out(vty, "%% invalid RAND value '%s'%s",
			rand_str, VTY_NEWLINE);
		goto failed;
	}
	if (osmo_hexparse(kc_str, &at.vec.kc[0], sizeof(at.vec.kc)) < 0) {
		vty_out(vty, "%% invalid Kc value '%s'%s",
			kc_str, VTY_NEWLINE);
		goto failed;
	}
	at.key_seq = cksn;

	subscr->sgsn_data->auth_triplets[cksn] = at;
	subscr->sgsn_data->auth_triplets_updated = 1;

	gprs_subscr_put(subscr);

	return CMD_SUCCESS;

failed:
	gprs_subscr_put(subscr);
	return CMD_SUCCESS;
}

DEFUN(update_subscr_cancel, update_subscr_cancel_cmd,
	UPDATE_SUBSCR_STR "cancel (update-procedure|subscription-withdraw)",
	UPDATE_SUBSCR_HELP
	"Cancel (remove) subscriber record\n"
	"The MS moved to another SGSN\n"
	"The subscription is no longer valid\n")
{
	const char *imsi = argv[0];
	const char *cancel_type = argv[1];

	struct gprs_subscr *subscr;

	subscr = gprs_subscr_get_by_imsi(imsi);
	if (!subscr) {
		vty_out(vty, "%% no subscriber record for %s%s",
			imsi, VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (strcmp(cancel_type, "update-procedure") == 0)
		subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE;
	else
		subscr->sgsn_data->error_cause = GMM_CAUSE_IMPL_DETACHED;

	gprs_subscr_cancel(subscr);
	gprs_subscr_put(subscr);

	return CMD_SUCCESS;
}

DEFUN(update_subscr_create, update_subscr_create_cmd,
	UPDATE_SUBSCR_STR "create",
	UPDATE_SUBSCR_HELP
	"Create a subscriber entry\n")
{
	const char *imsi = argv[0];

	struct gprs_subscr *subscr;

	subscr = gprs_subscr_get_by_imsi(imsi);
	if (subscr) {
		vty_out(vty, "%% subscriber record already exists for %s%s",
			imsi, VTY_NEWLINE);
		return CMD_WARNING;
	}

	subscr = gprs_subscr_get_or_create(imsi);
	subscr->keep_in_ram = 1;
	gprs_subscr_put(subscr);

	return CMD_SUCCESS;
}

DEFUN(update_subscr_destroy, update_subscr_destroy_cmd,
	UPDATE_SUBSCR_STR "destroy",
	UPDATE_SUBSCR_HELP
	"Destroy a subscriber entry\n")
{
	const char *imsi = argv[0];

	struct gprs_subscr *subscr;

	subscr = gprs_subscr_get_by_imsi(imsi);
	if (!subscr) {
		vty_out(vty, "%% subscriber record does not exist for %s%s",
			imsi, VTY_NEWLINE);
		return CMD_WARNING;
	}

	subscr->keep_in_ram = 0;
	subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE;
	gprs_subscr_cancel(subscr);
	if (subscr->use_count > 1)
		vty_out(vty, "%% subscriber is still in use%s",
			VTY_NEWLINE);
	gprs_subscr_put(subscr);

	return CMD_SUCCESS;
}

#define UL_ERR_STR "system-failure|data-missing|unexpected-data-value|" \
		   "unknown-subscriber|roaming-not-allowed"

#define UL_ERR_HELP \
		"Force error code SystemFailure\n" \
		"Force error code DataMissing\n" \
		"Force error code UnexpectedDataValue\n" \
		"Force error code UnknownSubscriber\n" \
		"Force error code RoamingNotAllowed\n"

DEFUN(update_subscr_update_location_result, update_subscr_update_location_result_cmd,
	UPDATE_SUBSCR_STR "update-location-result (ok|" UL_ERR_STR ")",
	UPDATE_SUBSCR_HELP
	"Complete the update location procedure\n"
	"The update location request succeeded\n"
	UL_ERR_HELP)
{
	const char *imsi = argv[0];
	const char *ret_code_str = argv[1];

	struct gprs_subscr *subscr;

	const struct value_string cause_mapping[] = {
		{ GMM_CAUSE_NET_FAIL,		"system-failure" },
		{ GMM_CAUSE_INV_MAND_INFO,	"data-missing" },
		{ GMM_CAUSE_PROTO_ERR_UNSPEC,   "unexpected-data-value" },
		{ GMM_CAUSE_IMSI_UNKNOWN,       "unknown-subscriber" },
		{ GMM_CAUSE_GPRS_NOTALLOWED,    "roaming-not-allowed" },
		{ 0, NULL }
	};

	subscr = gprs_subscr_get_by_imsi(imsi);
	if (!subscr) {
		vty_out(vty, "%% unable to get subscriber record for %s%s",
			imsi, VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (strcmp(ret_code_str, "ok") == 0) {
		subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE;
		subscr->authorized = 1;
	} else {
		subscr->sgsn_data->error_cause =
			get_string_value(cause_mapping, ret_code_str);
		subscr->authorized = 0;
	}

	gprs_subscr_update(subscr);

	gprs_subscr_put(subscr);

	return CMD_SUCCESS;
}

DEFUN(update_subscr_update_auth_info, update_subscr_update_auth_info_cmd,
	UPDATE_SUBSCR_STR "update-auth-info",
	UPDATE_SUBSCR_HELP
	"Complete the send authentication info procedure\n")
{
	const char *imsi = argv[0];

	struct gprs_subscr *subscr;

	subscr = gprs_subscr_get_by_imsi(imsi);
	if (!subscr) {
		vty_out(vty, "%% unable to get subscriber record for %s%s",
			imsi, VTY_NEWLINE);
		return CMD_WARNING;
	}

	gprs_subscr_update_auth_info(subscr);

	gprs_subscr_put(subscr);

	return CMD_SUCCESS;
}

DEFUN(cfg_gsup_remote_ip, cfg_gsup_remote_ip_cmd,
	"gsup remote-ip A.B.C.D",
	"GSUP Parameters\n"
	"Set the IP address of the remote GSUP server (e.g. OsmoHLR)."
	" This setting only applies if 'auth-policy remote' is used.\n"
	"IPv4 Address\n")
{
	inet_aton(argv[0], &g_cfg->gsup_server_addr.sin_addr);

	return CMD_SUCCESS;
}

DEFUN(cfg_gsup_remote_port, cfg_gsup_remote_port_cmd,
	"gsup remote-port <0-65535>",
	"GSUP Parameters\n"
	"Set the TCP port of the remote GSUP server, see also 'gsup remote-ip'\n"
	"Remote TCP port\n")
{
	g_cfg->gsup_server_port = atoi(argv[0]);

	return CMD_SUCCESS;
}

DEFUN(cfg_gsup_oap_id, cfg_gsup_oap_id_cmd,
	"gsup oap-id <0-65535>",
	"GSUP Parameters\n"
	"Set the OAP client ID for authentication on the GSUP protocol."
	" This setting only applies if 'auth-policy remote' is used.\n"
	"OAP client ID (0 == disabled)\n")
{
	/* VTY ensures range */
	g_cfg->oap.client_id = (uint16_t)atoi(argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_gsup_oap_k, cfg_gsup_oap_k_cmd,
	"gsup oap-k K",
	"GSUP Parameters\n"
	"Set the OAP shared secret key K for authentication on the GSUP protocol."
	" This setting only applies if auth-policy remote is used.\n"
	"K value (16 byte) hex\n")
{
	const char *k = argv[0];

	g_cfg->oap.secret_k_present = 0;

	if ((!k) || (strlen(k) == 0))
		goto disable;

	int k_len = osmo_hexparse(k,
				  g_cfg->oap.secret_k,
				  sizeof(g_cfg->oap.secret_k));
	if (k_len != 16) {
		vty_out(vty, "%% need exactly 16 octets for oap-k, got %d.%s",
			k_len, VTY_NEWLINE);
		goto disable;
	}

	g_cfg->oap.secret_k_present = 1;
	return CMD_SUCCESS;

disable:
	if (g_cfg->oap.client_id > 0) {
		vty_out(vty, "%% OAP client ID set, but invalid oap-k value disables OAP.%s",
			VTY_NEWLINE);
		return CMD_WARNING;
	}
	return CMD_SUCCESS;
}

DEFUN(cfg_gsup_oap_opc, cfg_gsup_oap_opc_cmd,
	"gsup oap-opc OPC",
	"GSUP Parameters\n"
	"Set the OAP shared secret OPC for authentication on the GSUP protocol."
	" This setting only applies if auth-policy remote is used.\n"
	"OPC value (16 byte) hex\n")
{
	const char *opc = argv[0];

	g_cfg->oap.secret_opc_present = 0;

	if ((!opc) || (strlen(opc) == 0))
		goto disable;

	int opc_len = osmo_hexparse(opc,
				    g_cfg->oap.secret_opc,
				    sizeof(g_cfg->oap.secret_opc));
	if (opc_len != 16) {
		vty_out(vty, "%% need exactly 16 octets for oap-opc, got %d.%s",
			opc_len, VTY_NEWLINE);
		goto disable;
	}

	g_cfg->oap.secret_opc_present = 1;
	return CMD_SUCCESS;

disable:
	if (g_cfg->oap.client_id > 0) {
		vty_out(vty, "%% OAP client ID set, but invalid oap-opc value disables OAP.%s",
			VTY_NEWLINE);
		return CMD_WARNING;
	}
	return CMD_SUCCESS;
}

DEFUN(cfg_apn_name, cfg_apn_name_cmd,
	"access-point-name NAME",
	"Globally allow the given APN name for all subscribers.\n"
	"Add this NAME to the list\n")
{
	return add_apn_ggsn_mapping(vty, argv[0], "", 0);
}

DEFUN(cfg_no_apn_name, cfg_no_apn_name_cmd,
	"no access-point-name NAME",
	NO_STR "Configure a global list of allowed APNs\n"
	"Remove entry with NAME\n")
{
	struct apn_ctx *apn_ctx = sgsn_apn_ctx_by_name(argv[0], "");
	if (!apn_ctx)
		return CMD_SUCCESS;

	sgsn_apn_ctx_free(apn_ctx);
	return CMD_SUCCESS;
}

DEFUN(cfg_cdr_filename, cfg_cdr_filename_cmd,
	"cdr filename NAME",
	"CDR\n"
	"Set the file name for the call-data-record file, logging the data usage of each subscriber.\n"
	"filename\n")
{
	talloc_free(g_cfg->cdr.filename);
	g_cfg->cdr.filename = talloc_strdup(tall_vty_ctx, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_no_cdr_filename, cfg_no_cdr_filename_cmd,
	"no cdr filename",
	NO_STR "CDR\nDisable saving CDR to file\n")
{
	talloc_free(g_cfg->cdr.filename);
	g_cfg->cdr.filename = NULL;
	return CMD_SUCCESS;
}

DEFUN(cfg_cdr_trap, cfg_cdr_trap_cmd,
	"cdr trap",
	"CDR\nEnable sending CDR via TRAP CTRL messages\n")
{
	g_cfg->cdr.trap = true;
	return CMD_SUCCESS;
}

DEFUN(cfg_no_cdr_trap, cfg_no_cdr_trap_cmd,
	"no cdr trap",
	NO_STR "CDR\nDisable sending CDR via TRAP CTRL messages\n")
{
	g_cfg->cdr.trap = false;
	return CMD_SUCCESS;
}

DEFUN(cfg_cdr_interval, cfg_cdr_interval_cmd,
	"cdr interval <1-2147483647>",
	"CDR\n"
	"Set the interval for the call-data-record file\n"
	"interval in seconds\n")
{
	g_cfg->cdr.interval = atoi(argv[0]);
	return CMD_SUCCESS;
}

#define COMPRESSION_STR "Configure compression\n"
DEFUN(cfg_no_comp_rfc1144, cfg_no_comp_rfc1144_cmd,
      "no compression rfc1144",
      NO_STR COMPRESSION_STR "disable rfc1144 TCP/IP header compression\n")
{
	g_cfg->pcomp_rfc1144.active = 0;
	g_cfg->pcomp_rfc1144.passive = 0;
	return CMD_SUCCESS;
}

DEFUN(cfg_comp_rfc1144, cfg_comp_rfc1144_cmd,
      "compression rfc1144 active slots <1-256>",
      COMPRESSION_STR
      "RFC1144 Header compresion scheme\n"
      "Compression is actively proposed\n"
      "Number of compression state slots\n"
      "Number of compression state slots\n")
{
	g_cfg->pcomp_rfc1144.active = 1;
	g_cfg->pcomp_rfc1144.passive = 1;
	g_cfg->pcomp_rfc1144.s01 = atoi(argv[0]) - 1;
	return CMD_SUCCESS;
}

DEFUN(cfg_comp_rfc1144p, cfg_comp_rfc1144p_cmd,
      "compression rfc1144 passive",
      COMPRESSION_STR
      "RFC1144 Header compresion scheme\n"
      "Compression is available on request\n")
{
	g_cfg->pcomp_rfc1144.active = 0;
	g_cfg->pcomp_rfc1144.passive = 1;
	return CMD_SUCCESS;
}

DEFUN(cfg_no_comp_v42bis, cfg_no_comp_v42bis_cmd,
      "no compression v42bis",
      NO_STR COMPRESSION_STR "disable V.42bis data compression\n")
{
	g_cfg->dcomp_v42bis.active = 0;
	g_cfg->dcomp_v42bis.passive = 0;
	return CMD_SUCCESS;
}

DEFUN(cfg_comp_v42bis, cfg_comp_v42bis_cmd,
      "compression v42bis active direction (ms|sgsn|both) codewords <512-65535> strlen <6-250>",
      COMPRESSION_STR
      "V.42bis data compresion scheme\n"
      "Compression is actively proposed\n"
      "Direction in which the compression shall be active (p0)\n"
      "Compress ms->sgsn direction only\n"
      "Compress sgsn->ms direction only\n"
      "Both directions\n"
      "Number of codewords (p1)\n"
      "Number of codewords\n"
      "Maximum string length (p2)\n" "Maximum string length\n")
{
	g_cfg->dcomp_v42bis.active = 1;
	g_cfg->dcomp_v42bis.passive = 1;

	switch (argv[0][0]) {
	case 'm':
		g_cfg->dcomp_v42bis.p0 = 1;
		break;
	case 's':
		g_cfg->dcomp_v42bis.p0 = 2;
		break;
	case 'b':
		g_cfg->dcomp_v42bis.p0 = 3;
		break;
	}

	g_cfg->dcomp_v42bis.p1 = atoi(argv[1]);
	g_cfg->dcomp_v42bis.p2 = atoi(argv[2]);
	return CMD_SUCCESS;
}

DEFUN(cfg_comp_v42bisp, cfg_comp_v42bisp_cmd,
      "compression v42bis passive",
      COMPRESSION_STR
      "V.42bis data compresion scheme\n"
      "Compression is available on request\n")
{
	g_cfg->dcomp_v42bis.active = 0;
	g_cfg->dcomp_v42bis.passive = 1;
	return CMD_SUCCESS;
}

int sgsn_vty_init(struct sgsn_config *cfg)
{
	g_cfg = cfg;

	install_element_ve(&show_sgsn_cmd);
	//install_element_ve(&show_mmctx_tlli_cmd);
	install_element_ve(&show_mmctx_imsi_cmd);
	install_element_ve(&show_mmctx_all_cmd);
	install_element_ve(&show_pdpctx_all_cmd);
	install_element_ve(&show_subscr_cache_cmd);

	install_element(ENABLE_NODE, &update_subscr_insert_auth_triplet_cmd);
	install_element(ENABLE_NODE, &update_subscr_create_cmd);
	install_element(ENABLE_NODE, &update_subscr_destroy_cmd);
	install_element(ENABLE_NODE, &update_subscr_cancel_cmd);
	install_element(ENABLE_NODE, &update_subscr_update_location_result_cmd);
	install_element(ENABLE_NODE, &update_subscr_update_auth_info_cmd);
	install_element(ENABLE_NODE, &reset_sgsn_state_cmd);

	install_element(CONFIG_NODE, &cfg_sgsn_cmd);
	install_node(&sgsn_node, config_write_sgsn);
	install_element(SGSN_NODE, &cfg_sgsn_bind_addr_cmd);
	install_element(SGSN_NODE, &cfg_ggsn_remote_ip_cmd);
	//install_element(SGSN_NODE, &cfg_ggsn_remote_port_cmd);
	install_element(SGSN_NODE, &cfg_ggsn_gtp_version_cmd);
	install_element(SGSN_NODE, &cfg_ggsn_echo_interval_cmd);
	install_element(SGSN_NODE, &cfg_ggsn_no_echo_interval_cmd);
	install_element(SGSN_NODE, &cfg_imsi_acl_cmd);
	install_element(SGSN_NODE, &cfg_auth_policy_cmd);
	install_element(SGSN_NODE, &cfg_encrypt_cmd);
	install_element(SGSN_NODE, &cfg_gsup_remote_ip_cmd);
	install_element(SGSN_NODE, &cfg_gsup_remote_port_cmd);
	install_element(SGSN_NODE, &cfg_gsup_oap_id_cmd);
	install_element(SGSN_NODE, &cfg_gsup_oap_k_cmd);
	install_element(SGSN_NODE, &cfg_gsup_oap_opc_cmd);
	install_element(SGSN_NODE, &cfg_apn_ggsn_cmd);
	install_element(SGSN_NODE, &cfg_apn_imsi_ggsn_cmd);
	install_element(SGSN_NODE, &cfg_apn_name_cmd);
	install_element(SGSN_NODE, &cfg_no_apn_name_cmd);
	install_element(SGSN_NODE, &cfg_cdr_filename_cmd);
	install_element(SGSN_NODE, &cfg_no_cdr_filename_cmd);
	install_element(SGSN_NODE, &cfg_cdr_trap_cmd);
	install_element(SGSN_NODE, &cfg_no_cdr_trap_cmd);
	install_element(SGSN_NODE, &cfg_cdr_interval_cmd);
	install_element(SGSN_NODE, &cfg_ggsn_dynamic_lookup_cmd);
	install_element(SGSN_NODE, &cfg_grx_ggsn_cmd);

	install_element(SGSN_NODE, &cfg_sgsn_T3312_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3322_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3350_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3360_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3370_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3313_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3314_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3316_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3385_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3386_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3395_cmd);
	install_element(SGSN_NODE, &cfg_sgsn_T3397_cmd);

	install_element(SGSN_NODE, &cfg_no_comp_rfc1144_cmd);
	install_element(SGSN_NODE, &cfg_comp_rfc1144_cmd);
	install_element(SGSN_NODE, &cfg_comp_rfc1144p_cmd);
	install_element(SGSN_NODE, &cfg_no_comp_v42bis_cmd);
	install_element(SGSN_NODE, &cfg_comp_v42bis_cmd);
	install_element(SGSN_NODE, &cfg_comp_v42bisp_cmd);

#ifdef BUILD_IU
	ranap_iu_vty_init(SGSN_NODE, &g_cfg->iu.rab_assign_addr_enc);
#endif
	return 0;
}

int sgsn_parse_config(const char *config_file)
{
	int rc;

	/* make sure sgsn_vty_init() was called before this */
	OSMO_ASSERT(g_cfg);

	g_cfg->timers.T3312 = GSM0408_T3312_SECS;
	g_cfg->timers.T3322 = GSM0408_T3322_SECS;
	g_cfg->timers.T3350 = GSM0408_T3350_SECS;
	g_cfg->timers.T3360 = GSM0408_T3360_SECS;
	g_cfg->timers.T3370 = GSM0408_T3370_SECS;
	g_cfg->timers.T3313 = GSM0408_T3313_SECS;
	g_cfg->timers.T3314 = GSM0408_T3314_SECS;
	g_cfg->timers.T3316 = GSM0408_T3316_SECS;
	g_cfg->timers.T3385 = GSM0408_T3385_SECS;
	g_cfg->timers.T3386 = GSM0408_T3386_SECS;
	g_cfg->timers.T3395 = GSM0408_T3395_SECS;
	g_cfg->timers.T3397 = GSM0408_T3397_SECS;

	rc = vty_read_config_file(config_file, NULL);
	if (rc < 0) {
		fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
		return rc;
	}

	if (g_cfg->auth_policy == SGSN_AUTH_POLICY_REMOTE
	    && !(g_cfg->gsup_server_addr.sin_addr.s_addr
		 && g_cfg->gsup_server_port)) {
		fprintf(stderr, "Configuration error:"
			" 'auth-policy remote' requires both"
			" 'gsup remote-ip' and 'gsup remote-port'\n");
		return -EINVAL;
	}

	return 0;
}