summaryrefslogtreecommitdiffstats
path: root/openbsc/src/gprs/gb_proxy_vty.c
blob: dcdc06c68f206c6cd5d140b2ad70d629185bc154 (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
/*
 * (C) 2010 by Harald Welte <laforge@gnumonks.org>
 * (C) 2010 by On-Waves
 * 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 <string.h>
#include <time.h>

#include <osmocom/core/talloc.h>
#include <osmocom/core/rate_ctr.h>

#include <openbsc/gsm_04_08.h>
#include <osmocom/gprs/gprs_ns.h>

#include <openbsc/debug.h>
#include <openbsc/gb_proxy.h>
#include <openbsc/gprs_utils.h>
#include <openbsc/vty.h>

#include <osmocom/vty/command.h>
#include <osmocom/vty/vty.h>
#include <osmocom/vty/misc.h>

static struct gbproxy_config *g_cfg = NULL;

/*
 * vty code for mgcp below
 */
static struct cmd_node gbproxy_node = {
	GBPROXY_NODE,
	"%s(config-gbproxy)# ",
	1,
};

static const struct value_string patch_modes[] = {
	{GBPROX_PATCH_DEFAULT, "default"},
	{GBPROX_PATCH_BSSGP, "bssgp"},
	{GBPROX_PATCH_LLC_ATTACH_REQ, "llc-attach-req"},
	{GBPROX_PATCH_LLC_ATTACH, "llc-attach"},
	{GBPROX_PATCH_LLC_GMM, "llc-gmm"},
	{GBPROX_PATCH_LLC_GSM, "llc-gsm"},
	{GBPROX_PATCH_LLC, "llc"},
	{0, NULL}
};

static void gbprox_vty_print_peer(struct vty *vty, struct gbproxy_peer *peer)
{
	struct gprs_ra_id raid;
	gsm48_parse_ra(&raid, peer->ra);

	vty_out(vty, "NSEI %5u, PTP-BVCI %5u, "
		"RAI %u-%u-%u-%u",
		peer->nsei, peer->bvci,
		raid.mcc, raid.mnc, raid.lac, raid.rac);
	if (peer->blocked)
		vty_out(vty, " [BVC-BLOCKED]");

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

static int config_write_gbproxy(struct vty *vty)
{
	vty_out(vty, "gbproxy%s", VTY_NEWLINE);

	vty_out(vty, " sgsn nsei %u%s", g_cfg->nsip_sgsn_nsei,
		VTY_NEWLINE);

	if (g_cfg->core_mcc > 0)
		vty_out(vty, " core-mobile-country-code %d%s",
			g_cfg->core_mcc, VTY_NEWLINE);
	if (g_cfg->core_mnc > 0)
		vty_out(vty, " core-mobile-network-code %d%s",
			g_cfg->core_mnc, VTY_NEWLINE);
	if (g_cfg->core_apn != NULL) {
	       if (g_cfg->core_apn_size > 0) {
		       char str[500] = {0};
		       vty_out(vty, " core-access-point-name %s",
			       gprs_apn_to_str(str, g_cfg->core_apn,
						 g_cfg->core_apn_size));
	       } else {
		       vty_out(vty, " core-access-point-name none");
	       }
	       if (g_cfg->match_re)
		       vty_out(vty, " match-imsi %s%s",
			       g_cfg->match_re, VTY_NEWLINE);
	       else
		       vty_out(vty, "%s", VTY_NEWLINE);
	}

	if (g_cfg->patch_ptmsi > 0)
		vty_out(vty, " patch-ptmsi%s",
			VTY_NEWLINE);

	if (g_cfg->tlli_max_age > 0)
		vty_out(vty, " tlli-list max-age %d%s",
			g_cfg->tlli_max_age, VTY_NEWLINE);
	if (g_cfg->tlli_max_len > 0)
		vty_out(vty, " tlli-list max-length %d%s",
			g_cfg->tlli_max_len, VTY_NEWLINE);

	if (g_cfg->patch_mode != GBPROX_PATCH_DEFAULT)
		vty_out(vty, " patch-mode %s%s",
			get_value_string(patch_modes, g_cfg->patch_mode),
			VTY_NEWLINE);

	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy,
      cfg_gbproxy_cmd,
      "gbproxy",
      "Configure the Gb proxy")
{
	vty->node = GBPROXY_NODE;
	return CMD_SUCCESS;
}

DEFUN(cfg_nsip_sgsn_nsei,
      cfg_nsip_sgsn_nsei_cmd,
      "sgsn nsei <0-65534>",
      "SGSN information\n"
      "NSEI to be used in the connection with the SGSN\n"
      "The NSEI\n")
{
	unsigned int port = atoi(argv[0]);

	g_cfg->nsip_sgsn_nsei = port;
	return CMD_SUCCESS;
}

#define GBPROXY_CORE_MNC_STR "Use this network code for the core network\n"

DEFUN(cfg_gbproxy_core_mnc,
      cfg_gbproxy_core_mnc_cmd,
      "core-mobile-network-code <1-999>",
      GBPROXY_CORE_MNC_STR "NCC value\n")
{
	g_cfg->core_mnc = atoi(argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy_no_core_mnc,
      cfg_gbproxy_no_core_mnc_cmd,
      "no core-mobile-network-code",
      NO_STR GBPROXY_CORE_MNC_STR)
{
	g_cfg->core_mnc = 0;
	return CMD_SUCCESS;
}

#define GBPROXY_CORE_MCC_STR "Use this country code for the core network\n"

DEFUN(cfg_gbproxy_core_mcc,
      cfg_gbproxy_core_mcc_cmd,
      "core-mobile-country-code <1-999>",
      GBPROXY_CORE_MCC_STR "MCC value\n")
{
	g_cfg->core_mcc = atoi(argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy_no_core_mcc,
      cfg_gbproxy_no_core_mcc_cmd,
      "no core-mobile-country-code",
      NO_STR GBPROXY_CORE_MCC_STR)
{
	g_cfg->core_mcc = 0;
	return CMD_SUCCESS;
}

#define GBPROXY_CORE_APN_STR "Use this access point name (APN) for the backbone\n"
#define GBPROXY_CORE_APN_ARG_STR "Replace APN by this string\n" "Remove APN\n"

static int set_core_apn(struct vty *vty, const char *apn, const char *filter)
{
	const char *err_msg = NULL;
	int apn_len;

	if (!apn) {
		talloc_free(g_cfg->core_apn);
		g_cfg->core_apn = NULL;
		g_cfg->core_apn_size = 0;
		gbproxy_clear_patch_filter(g_cfg);
		return CMD_SUCCESS;
	}

	apn_len = strlen(apn);

	if (apn_len >= 100) {
		vty_out(vty, "APN string too long (max 99 chars)%s",
			VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (!filter) {
		gbproxy_clear_patch_filter(g_cfg);
	} else if (gbproxy_set_patch_filter(g_cfg, filter, &err_msg) != 0) {
		vty_out(vty, "Match expression invalid: %s%s",
			err_msg, VTY_NEWLINE);
		return CMD_WARNING;
	}

	talloc_free(g_cfg->match_re);
	if (filter)
		/* TODO: replace NULL */
		g_cfg->match_re = talloc_strdup(NULL, filter);
	else
		g_cfg->match_re = NULL;

	if (apn_len == 0) {
		talloc_free(g_cfg->core_apn);
		/* TODO: replace NULL */
		g_cfg->core_apn = talloc_zero_size(NULL, 2);
		g_cfg->core_apn_size = 0;
	} else {
		/* TODO: replace NULL */
		g_cfg->core_apn =
			talloc_realloc_size(NULL, g_cfg->core_apn, apn_len + 1);
		g_cfg->core_apn_size =
			gprs_str_to_apn(g_cfg->core_apn, apn_len + 1, apn);
	}

	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy_core_apn,
      cfg_gbproxy_core_apn_cmd,
      "core-access-point-name (APN|none)",
      GBPROXY_CORE_APN_STR GBPROXY_CORE_APN_ARG_STR)
{
	if (strcmp(argv[0], "none") == 0)
		return set_core_apn(vty, "", NULL);
	else
		return set_core_apn(vty, argv[0], NULL);
}

DEFUN(cfg_gbproxy_core_apn_match,
      cfg_gbproxy_core_apn_match_cmd,
      "core-access-point-name (APN|none) match-imsi .REGEXP",
      GBPROXY_CORE_APN_STR GBPROXY_CORE_APN_ARG_STR
      "Only modify if the IMSI matches\n"
      "Regular expression for the match\n")
{
	if (strcmp(argv[0], "none") == 0)
		return set_core_apn(vty, "", argv[1]);
	else
		return set_core_apn(vty, argv[0], argv[1]);
}

DEFUN(cfg_gbproxy_no_core_apn,
      cfg_gbproxy_no_core_apn_cmd,
      "no core-access-point-name",
      NO_STR GBPROXY_CORE_APN_STR)
{
	return set_core_apn(vty, NULL, NULL);
}

#define GBPROXY_PATCH_PTMSI_STR "Patch P-TMSI/TLLI\n"

DEFUN(cfg_gbproxy_patch_ptmsi,
      cfg_gbproxy_patch_ptmsi_cmd,
      "patch-ptmsi",
      GBPROXY_PATCH_PTMSI_STR)
{
	g_cfg->patch_ptmsi = 1;

	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy_no_patch_ptmsi,
      cfg_gbproxy_no_patch_ptmsi_cmd,
      "no patch-ptmsi",
      NO_STR GBPROXY_PATCH_PTMSI_STR)
{
	g_cfg->patch_ptmsi = 0;

	return CMD_SUCCESS;
}

#define GBPROXY_TLLI_LIST_STR "Set TLLI list parameters\n"
#define GBPROXY_MAX_AGE_STR "Limit maximum age\n"

DEFUN(cfg_gbproxy_tlli_list_max_age,
      cfg_gbproxy_tlli_list_max_age_cmd,
      "tlli-list max-age <1-999999>",
      GBPROXY_TLLI_LIST_STR GBPROXY_MAX_AGE_STR
      "Maximum age in seconds\n")
{
	g_cfg->tlli_max_age = atoi(argv[0]);

	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy_tlli_list_no_max_age,
      cfg_gbproxy_tlli_list_no_max_age_cmd,
      "no tlli-list max-age",
      NO_STR GBPROXY_TLLI_LIST_STR GBPROXY_MAX_AGE_STR)
{
	g_cfg->tlli_max_age = 0;

	return CMD_SUCCESS;
}

#define GBPROXY_MAX_LEN_STR "Limit list length\n"

DEFUN(cfg_gbproxy_tlli_list_max_len,
      cfg_gbproxy_tlli_list_max_len_cmd,
      "tlli-list max-length <1-99999>",
      GBPROXY_TLLI_LIST_STR GBPROXY_MAX_LEN_STR
      "Maximum number of TLLIs in the list\n")
{
	g_cfg->tlli_max_len = atoi(argv[0]);

	return CMD_SUCCESS;
}

DEFUN(cfg_gbproxy_tlli_list_no_max_len,
      cfg_gbproxy_tlli_list_no_max_len_cmd,
      "no tlli-list max-length",
      NO_STR GBPROXY_TLLI_LIST_STR GBPROXY_MAX_LEN_STR)
{
	g_cfg->tlli_max_len = 0;

	return CMD_SUCCESS;
}


DEFUN(cfg_gbproxy_patch_mode,
      cfg_gbproxy_patch_mode_cmd,
      "patch-mode (default|bssgp|llc-attach-req|llc-attach|llc-gmm|llc-gsm|llc)",
      "Set patch mode\n"
      "Use build-in default (best effort, try to patch everything)\n"
      "Only patch BSSGP headers\n"
      "Patch BSSGP headers and LLC Attach Request messages\n"
      "Patch BSSGP headers and LLC Attach Request/Accept messages\n"
      "Patch BSSGP headers and LLC GMM messages\n"
      "Patch BSSGP headers, LLC GMM, and LLC GSM messages\n"
      "Patch BSSGP headers and all supported LLC messages\n"
      )
{
	int val = get_string_value(patch_modes, argv[0]);
	OSMO_ASSERT(val >= 0);
	g_cfg->patch_mode = val;
	return CMD_SUCCESS;
}

DEFUN(show_gbproxy, show_gbproxy_cmd, "show gbproxy [stats]",
       SHOW_STR "Display information about the Gb proxy\n" "Show statistics\n")
{
	struct gbproxy_peer *peer;
	int show_stats = argc >= 1;

	if (show_stats)
		vty_out_rate_ctr_group(vty, "", g_cfg->ctrg);

	llist_for_each_entry(peer, &g_cfg->bts_peers, list) {
		gbprox_vty_print_peer(vty, peer);

		if (show_stats)
			vty_out_rate_ctr_group(vty, "  ", peer->ctrg);
	}
	return CMD_SUCCESS;
}

DEFUN(show_gbproxy_tllis, show_gbproxy_tllis_cmd, "show gbproxy tllis",
       SHOW_STR "Display information about the Gb proxy\n" "Show TLLIs\n")
{
	struct gbproxy_peer *peer;
	char mi_buf[200];
	time_t now = time(NULL);

	llist_for_each_entry(peer, &g_cfg->bts_peers, list) {
		struct gbproxy_tlli_info *tlli_info;
		struct gbproxy_patch_state *state = &peer->patch_state;

		gbprox_vty_print_peer(vty, peer);

		llist_for_each_entry(tlli_info, &state->enabled_tllis, list) {
			time_t age = now - tlli_info->timestamp;
			if (tlli_info->mi_data_len > 0) {
				snprintf(mi_buf, sizeof(mi_buf), "(invalid)");
				gsm48_mi_to_string(mi_buf, sizeof(mi_buf),
						   tlli_info->mi_data,
						   tlli_info->mi_data_len);
			} else {
				snprintf(mi_buf, sizeof(mi_buf), "(none)");
			}
			vty_out(vty, "  TLLI %08x, IMSI %s, AGE %d%s",
				tlli_info->tlli.current, mi_buf, (int)age,
				VTY_NEWLINE);
		}
	}
	return CMD_SUCCESS;
}

DEFUN(delete_gb_bvci, delete_gb_bvci_cmd,
	"delete-gbproxy-peer <0-65534> bvci <2-65534>",
	"Delete a GBProxy peer by NSEI and optionally BVCI\n"
	"NSEI number\n"
	"Only delete peer with a matching BVCI\n"
	"BVCI number\n")
{
	const uint16_t nsei = atoi(argv[0]);
	const uint16_t bvci = atoi(argv[1]);
	int counter;

	counter = gbproxy_cleanup_peers(g_cfg, nsei, bvci);

	if (counter == 0) {
		vty_out(vty, "BVC not found%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	return CMD_SUCCESS;
}

DEFUN(delete_gb_nsei, delete_gb_nsei_cmd,
	"delete-gbproxy-peer <0-65534> (only-bvc|only-nsvc|all) [dry-run]",
	"Delete a GBProxy peer by NSEI and optionally BVCI\n"
	"NSEI number\n"
	"Only delete BSSGP connections (BVC)\n"
	"Only delete dynamic NS connections (NS-VC)\n"
	"Delete BVC and dynamic NS connections\n"
	"Show what would be deleted instead of actually deleting\n"
	)
{
	const uint16_t nsei = atoi(argv[0]);
	const char *mode = argv[1];
	int dry_run = argc > 2;
	int delete_bvc = 0;
	int delete_nsvc = 0;
	int counter;

	if (strcmp(mode, "only-bvc") == 0)
		delete_bvc = 1;
	else if (strcmp(mode, "only-nsvc") == 0)
		delete_nsvc = 1;
	else
		delete_bvc = delete_nsvc = 1;

	if (delete_bvc) {
		if (!dry_run)
			counter = gbproxy_cleanup_peers(g_cfg, nsei, 0);
		else {
			struct gbproxy_peer *peer;
			counter = 0;
			llist_for_each_entry(peer, &g_cfg->bts_peers, list) {
				if (peer->nsei != nsei)
					continue;

				vty_out(vty, "BVC: ");
				gbprox_vty_print_peer(vty, peer);
				counter += 1;
			}
		}
		vty_out(vty, "%sDeleted %d BVC%s",
			dry_run ? "Not " : "", counter, VTY_NEWLINE);
	}

	if (delete_nsvc) {
		struct gprs_ns_inst *nsi = g_cfg->nsi;
		struct gprs_nsvc *nsvc, *nsvc2;

		counter = 0;
		llist_for_each_entry_safe(nsvc, nsvc2, &nsi->gprs_nsvcs, list) {
			if (nsvc->nsei != nsei)
				continue;
			if (nsvc->persistent)
				continue;

			if (!dry_run)
				gprs_nsvc_delete(nsvc);
			else
				vty_out(vty, "NS-VC: NSEI %5u, NS-VCI %5u, "
					"remote %s%s",
					nsvc->nsei, nsvc->nsvci,
					gprs_ns_ll_str(nsvc), VTY_NEWLINE);
			counter += 1;
		}
		vty_out(vty, "%sDeleted %d NS-VC%s",
			dry_run ? "Not " : "", counter, VTY_NEWLINE);
	}

	return CMD_SUCCESS;
}

DEFUN(delete_gb_tlli, delete_gb_tlli_cmd,
	"delete-gbproxy-tlli <0-65534> (tlli|imsi|stale) [IDENT]",
	"Delete a GBProxy TLLI entry by NSEI and identification\n"
	"NSEI number\n"
	"Delete entries with a matching TLLI (hex)\n"
	"Delete entries with a matching IMSI\n"
	"Delete stale entries\n"
	"Identification to match\n")
{
	const uint16_t nsei = atoi(argv[0]);
	enum {MATCH_TLLI = 't', MATCH_IMSI = 'i', MATCH_STALE = 's'} match;
	uint32_t tlli = 0;
	const char *imsi = NULL;
	struct gbproxy_peer *peer = 0;
	struct gbproxy_tlli_info *tlli_info, *nxt;
	struct gbproxy_patch_state *state;
	char mi_buf[200];
	int found = 0;

	match = argv[1][0];

	switch (match) {
	case MATCH_TLLI:
		if (argc < 2 || !argv[2][0]) {
			vty_out(vty, "%% Missing TLLI%s", VTY_NEWLINE);
			return CMD_WARNING;
		}
		tlli = strtoll(argv[2], NULL, 16);
		break;
	case MATCH_IMSI:
		if (argc < 2 || !argv[2][0]) {
			vty_out(vty, "%% Missing IMSI%s", VTY_NEWLINE);
			return CMD_WARNING;
		}
		imsi = argv[2];
		break;
	default:
		break;
	}

	peer = gbproxy_peer_by_nsei(g_cfg, nsei);
	if (!peer) {
		vty_out(vty, "Didn't find peer with NSEI %d%s",
			nsei, VTY_NEWLINE);
		return CMD_WARNING;
	}

	state = &peer->patch_state;

	if (match == MATCH_STALE) {
		found = gbproxy_remove_stale_tllis(peer, time(NULL));
		if (found)
			vty_out(vty, "Deleted %d stale TLLI%s%s",
				found, found == 1 ? "" : "s", VTY_NEWLINE);
		return CMD_SUCCESS;
	}

	llist_for_each_entry_safe(tlli_info, nxt, &state->enabled_tllis, list) {
		if (match == MATCH_TLLI && tlli_info->tlli.current != tlli)
			continue;

		if (match == MATCH_IMSI) {
			mi_buf[0] = '\0';
			gsm48_mi_to_string(mi_buf, sizeof(mi_buf),
					   tlli_info->mi_data,
					   tlli_info->mi_data_len);

			if (strcmp(mi_buf, imsi) != 0)
				continue;
		}
		vty_out(vty, "Deleting TLLI %08x%s", tlli_info->tlli.current,
			VTY_NEWLINE);
		gbproxy_delete_tlli(peer, tlli_info);
		found += 1;
	}

	if (!found && argc >= 2) {
		vty_out(vty, "Didn't find TLLI entry with %s %s%s",
			argv[1], argv[2], VTY_NEWLINE);
	}

	return CMD_SUCCESS;
}

int gbproxy_vty_init(void)
{
	install_element_ve(&show_gbproxy_cmd);
	install_element_ve(&show_gbproxy_tllis_cmd);

	install_element(ENABLE_NODE, &delete_gb_bvci_cmd);
	install_element(ENABLE_NODE, &delete_gb_nsei_cmd);
	install_element(ENABLE_NODE, &delete_gb_tlli_cmd);

	install_element(CONFIG_NODE, &cfg_gbproxy_cmd);
	install_node(&gbproxy_node, config_write_gbproxy);
	vty_install_default(GBPROXY_NODE);
	install_element(GBPROXY_NODE, &cfg_nsip_sgsn_nsei_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_core_mcc_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_core_mnc_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_core_apn_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_core_apn_match_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_patch_ptmsi_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_max_age_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_max_len_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_no_core_mcc_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_no_core_mnc_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_no_core_apn_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_no_patch_ptmsi_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_no_max_age_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_no_max_len_cmd);
	install_element(GBPROXY_NODE, &cfg_gbproxy_patch_mode_cmd);

	return 0;
}

int gbproxy_parse_config(const char *config_file, struct gbproxy_config *cfg)
{
	int rc;

	g_cfg = cfg;
	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;
	}

	return 0;
}