summaryrefslogtreecommitdiffstats
path: root/openbsc/src/libmgcp/mgcp_vty.c
blob: 77350050439326345aeca23ff7130b0073794e19 (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
/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
/* The protocol implementation */

/*
 * (C) 2009-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
 * (C) 2009-2011 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 <osmocom/core/talloc.h>

#include <openbsc/mgcp.h>
#include <openbsc/mgcp_internal.h>
#include <openbsc/vty.h>

#include <string.h>

static struct mgcp_config *g_cfg = NULL;

static struct mgcp_trunk_config *find_trunk(struct mgcp_config *cfg, int nr)
{
	struct mgcp_trunk_config *trunk;

	if (nr == 0)
		trunk = &cfg->trunk;
	else
		trunk = mgcp_trunk_num(cfg, nr);

	return trunk;
}

/*
 * vty code for mgcp below
 */
struct cmd_node mgcp_node = {
	MGCP_NODE,
	"%s(mgcp)#",
	1,
};

struct cmd_node trunk_node = {
	TRUNK_NODE,
	"%s(trunk)#",
	1,
};

static int config_write_mgcp(struct vty *vty)
{
	vty_out(vty, "mgcp%s", VTY_NEWLINE);
	if (g_cfg->local_ip)
		vty_out(vty, "  local ip %s%s", g_cfg->local_ip, VTY_NEWLINE);
	if (g_cfg->bts_ip && strlen(g_cfg->bts_ip) != 0)
		vty_out(vty, "  bts ip %s%s", g_cfg->bts_ip, VTY_NEWLINE);
	vty_out(vty, "  bind ip %s%s", g_cfg->source_addr, VTY_NEWLINE);
	vty_out(vty, "  bind port %u%s", g_cfg->source_port, VTY_NEWLINE);

	if (g_cfg->bts_ports.mode == PORT_ALLOC_STATIC)
		vty_out(vty, "  rtp bts-base %u%s", g_cfg->bts_ports.base_port, VTY_NEWLINE);
	else
		vty_out(vty, "  rtp bts-range %u %u%s",
			g_cfg->bts_ports.range_start, g_cfg->bts_ports.range_end, VTY_NEWLINE);

	if (g_cfg->net_ports.mode == PORT_ALLOC_STATIC)
		vty_out(vty, "  rtp net-base %u%s", g_cfg->net_ports.base_port, VTY_NEWLINE);
	else
		vty_out(vty, "  rtp net-range %u %u%s",
			g_cfg->net_ports.range_start, g_cfg->net_ports.range_end, VTY_NEWLINE);

	vty_out(vty, "  rtp ip-dscp %d%s", g_cfg->endp_dscp, VTY_NEWLINE);
	if (g_cfg->trunk.audio_payload != -1)
		vty_out(vty, "  sdp audio payload number %d%s",
			g_cfg->trunk.audio_payload, VTY_NEWLINE);
	if (g_cfg->trunk.audio_name)
		vty_out(vty, "  sdp audio payload name %s%s",
			g_cfg->trunk.audio_name, VTY_NEWLINE);
	vty_out(vty, "  loop %u%s", !!g_cfg->trunk.audio_loop, VTY_NEWLINE);
	vty_out(vty, "  number endpoints %u%s", g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
	if (g_cfg->call_agent_addr)
		vty_out(vty, "  call agent ip %s%s", g_cfg->call_agent_addr, VTY_NEWLINE);
	if (g_cfg->transcoder_ip)
		vty_out(vty, "  transcoder-mgw %s%s", g_cfg->transcoder_ip, VTY_NEWLINE);

	if (g_cfg->transcoder_ports.mode == PORT_ALLOC_STATIC)
		vty_out(vty, "  rtp transcoder-base %u%s", g_cfg->transcoder_ports.base_port, VTY_NEWLINE);
	else
		vty_out(vty, "  rtp transcoder-range %u %u%s",
			g_cfg->transcoder_ports.range_start, g_cfg->transcoder_ports.range_end, VTY_NEWLINE);
	vty_out(vty, "  transcoder-remote-base %u%s", g_cfg->transcoder_remote_base, VTY_NEWLINE);

	/* Compression */
	vty_out(vty, "  allow-compression %s%s",
		mgcp_compr_name(g_cfg->trunk.compress_dir), VTY_NEWLINE);
	if (g_cfg->trunk.compress_dir != COMPR_NONE)
		vty_out(vty, "  compression batching %u%s",
			g_cfg->trunk.compress_batch, VTY_NEWLINE);

	return CMD_SUCCESS;
}

static void dump_trunk(struct vty *vty, struct mgcp_trunk_config *cfg)
{
	int i;

	vty_out(vty, "%s trunk nr %d with %d endpoints:%s",
		cfg->trunk_type == MGCP_TRUNK_VIRTUAL ? "Virtual" : "E1",
		cfg->trunk_nr, cfg->number_endpoints - 1, VTY_NEWLINE);

	if (!cfg->endpoints) {
		vty_out(vty, "No endpoints allocated yet.%s", VTY_NEWLINE);
		return;
	}

	for (i = 1; i < cfg->number_endpoints; ++i) {
		struct mgcp_endpoint *endp = &cfg->endpoints[i];
		vty_out(vty,
			" Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u on %s "
			"traffic received bts: %u/%u  remote: %u/%u transcoder: %u/%u%s",
			i, endp->ci,
			ntohs(endp->net_end.rtp_port), ntohs(endp->net_end.rtcp_port),
			ntohs(endp->bts_end.rtp_port), ntohs(endp->bts_end.rtcp_port),
			inet_ntoa(endp->bts_end.addr),
			endp->bts_end.packets, endp->bts_state.lost_no,
			endp->net_end.packets, endp->net_state.lost_no,
			endp->trans_net.packets, endp->trans_bts.packets,
			VTY_NEWLINE);
	}
}

DEFUN(show_mcgp, show_mgcp_cmd, "show mgcp",
      SHOW_STR "Display information about the MGCP Media Gateway")
{
	struct mgcp_trunk_config *trunk;

	dump_trunk(vty, &g_cfg->trunk);

	llist_for_each_entry(trunk, &g_cfg->trunks, entry)
		dump_trunk(vty, trunk);

	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp,
      cfg_mgcp_cmd,
      "mgcp",
      "Configure the MGCP")
{
	vty->node = MGCP_NODE;
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_local_ip,
      cfg_mgcp_local_ip_cmd,
      "local ip A.B.C.D",
      "Set the IP to be used in SDP records")
{
	bsc_replace_string(g_cfg, &g_cfg->local_ip, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_bts_ip,
      cfg_mgcp_bts_ip_cmd,
      "bts ip A.B.C.D",
      "Set the IP of the BTS for RTP forwarding")
{
	bsc_replace_string(g_cfg, &g_cfg->bts_ip, argv[0]);
	inet_aton(g_cfg->bts_ip, &g_cfg->bts_in);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_bind_ip,
      cfg_mgcp_bind_ip_cmd,
      "bind ip A.B.C.D",
      "Bind the MGCP to this local addr")
{
	bsc_replace_string(g_cfg, &g_cfg->source_addr, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_bind_port,
      cfg_mgcp_bind_port_cmd,
      "bind port <0-65534>",
      "Bind the MGCP to this port")
{
	unsigned int port = atoi(argv[0]);
	g_cfg->source_port = port;
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_bind_early,
      cfg_mgcp_bind_early_cmd,
      "bind early (0|1)",
      "Bind all RTP ports early")
{
	vty_out(vty, "bind early is deprecated, remove it from the config.\n");
	return CMD_WARNING;
}

static void parse_base(struct mgcp_port_range *range, const char **argv)
{
	unsigned int port = atoi(argv[0]);
	range->mode = PORT_ALLOC_STATIC;
	range->base_port = port;
}

static void parse_range(struct mgcp_port_range *range, const char **argv)
{
	range->mode = PORT_ALLOC_DYNAMIC;
	range->range_start = atoi(argv[0]);
	range->range_end = atoi(argv[1]);
	range->last_port = g_cfg->bts_ports.range_start;
}


DEFUN(cfg_mgcp_rtp_bts_base_port,
      cfg_mgcp_rtp_bts_base_port_cmd,
      "rtp bts-base <0-65534>",
      "Base port to use")
{
	parse_base(&g_cfg->bts_ports, argv);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_rtp_bts_range,
      cfg_mgcp_rtp_bts_range_cmd,
      "rtp bts-range <0-65534> <0-65534>",
      "Range of ports to allocate for endpoints\n"
      "Start of the range of ports\n" "End of the range of ports\n")
{
	parse_range(&g_cfg->bts_ports, argv);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_rtp_net_range,
      cfg_mgcp_rtp_net_range_cmd,
      "rtp net-range <0-65534> <0-65534>",
      "Range of ports to allocate for endpoints\n"
      "Start of the range of ports\n" "End of the range of ports\n")
{
	parse_range(&g_cfg->net_ports, argv);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_rtp_net_base_port,
      cfg_mgcp_rtp_net_base_port_cmd,
      "rtp net-base <0-65534>",
      "Base port to use for network port\n" "Port\n")
{
	parse_base(&g_cfg->net_ports, argv);
	return CMD_SUCCESS;
}

ALIAS_DEPRECATED(cfg_mgcp_rtp_bts_base_port, cfg_mgcp_rtp_base_port_cmd,
      "rtp base <0-65534>", "Base port to use")

DEFUN(cfg_mgcp_rtp_transcoder_range,
      cfg_mgcp_rtp_transcoder_range_cmd,
      "rtp transcoder-range <0-65534> <0-65534>",
      "Range of ports to allocate for the transcoder\n"
      "Start of the range of ports\n" "End of the range of ports\n")
{
	parse_range(&g_cfg->transcoder_ports, argv);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_rtp_transcoder_base,
      cfg_mgcp_rtp_transcoder_base_cmd,
      "rtp transcoder-base <0-65534>",
      "Base port for the transcoder range\n" "Port\n")
{
	parse_base(&g_cfg->transcoder_ports, argv);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_rtp_ip_dscp,
      cfg_mgcp_rtp_ip_dscp_cmd,
      "rtp ip-dscp <0-255>",
      "Set the IP_TOS socket attribute on the RTP/RTCP sockets.\n" "The DSCP value.")
{
	int dscp = atoi(argv[0]);
	g_cfg->endp_dscp = dscp;
	return CMD_SUCCESS;
}

ALIAS_DEPRECATED(cfg_mgcp_rtp_ip_dscp, cfg_mgcp_rtp_ip_tos_cmd,
      "rtp ip-tos <0-255>",
      "Set the IP_TOS socket attribute on the RTP/RTCP sockets.\n" "The DSCP value.")


DEFUN(cfg_mgcp_sdp_payload_number,
      cfg_mgcp_sdp_payload_number_cmd,
      "sdp audio payload number <1-255>",
      "Set the audio codec to use")
{
	unsigned int payload = atoi(argv[0]);
	g_cfg->trunk.audio_payload = payload;
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_sdp_payload_name,
      cfg_mgcp_sdp_payload_name_cmd,
      "sdp audio payload name NAME",
      "Set the audio name to use")
{
	bsc_replace_string(g_cfg, &g_cfg->trunk.audio_name, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_loop,
      cfg_mgcp_loop_cmd,
      "loop (0|1)",
      "Loop the audio")
{
	g_cfg->trunk.audio_loop = atoi(argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_number_endp,
      cfg_mgcp_number_endp_cmd,
      "number endpoints <0-65534>",
      "The number of endpoints to allocate. This is not dynamic.")
{
	/* + 1 as we start counting at one */
	g_cfg->trunk.number_endpoints = atoi(argv[0]) + 1;
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_agent_addr,
      cfg_mgcp_agent_addr_cmd,
      "call agent ip IP",
      "Set the address of the call agent.")
{
	bsc_replace_string(g_cfg, &g_cfg->call_agent_addr, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_transcoder,
      cfg_mgcp_transcoder_cmd,
      "transcoder-mgw A.B.C.D",
      "Use a MGW to detranscoder RTP\n"
      "The IP address of the MGW")
{
	bsc_replace_string(g_cfg, &g_cfg->transcoder_ip, argv[0]);
	inet_aton(g_cfg->transcoder_ip, &g_cfg->transcoder_in);

	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_no_transcoder,
      cfg_mgcp_no_transcoder_cmd,
      NO_STR "transcoder-mgw",
      "Disable the transcoding\n")
{
	if (g_cfg->transcoder_ip) {
		LOGP(DMGCP, LOGL_NOTICE, "Disabling transcoding on future calls.\n");
		talloc_free(g_cfg->transcoder_ip);
		g_cfg->transcoder_ip = NULL;
	}

	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_transcoder_remote_base,
      cfg_mgcp_transcoder_remote_base_cmd,
      "transcoder-remote-base <0-65534>",
      "Set the base port for the transcoder\n" "The RTP base port on the transcoder")
{
	g_cfg->transcoder_remote_base = atoi(argv[0]);
	return CMD_SUCCESS;
}

#define COMPR_STR \
		"Allow Compression\n" \
		"No Compression\n" "Compress data to the network\n" \
		"Compress data to the BTS/BSC\n"

static void parse_compression(struct mgcp_trunk_config *trunk, const char *da)
{
	if (strcmp(da, "none") == 0)
		trunk->compress_dir = COMPR_NONE;
	else if (strcmp(da, "net") == 0)
		trunk->compress_dir = COMPR_NET;
	else if (strcmp(da, "bts") == 0)
		trunk->compress_dir = COMPR_BTS;
}

DEFUN(cfg_mgcp_compr,
      cfg_mgcp_compr_cmd,
      "allow-compression (none|net|bts)",
      COMPR_STR)
{
	parse_compression(&g_cfg->trunk, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_mgcp_compr_batch,
      cfg_mgcp_compr_batch_cmd,
      "compression batching <1-15>",
      COMPR_STR)
{
	g_cfg->trunk.compress_batch = atoi(argv[0]);

	return CMD_SUCCESS;
}


DEFUN(cfg_mgcp_trunk, cfg_mgcp_trunk_cmd,
      "trunk <1-64>",
      "Configure a SS7 trunk\n" "Trunk Nr\n")
{
	struct mgcp_trunk_config *trunk;
	int index = atoi(argv[0]);

	trunk = mgcp_trunk_num(g_cfg, index);
	if (!trunk)
		trunk = mgcp_trunk_alloc(g_cfg, index);

	if (!trunk) {
		vty_out(vty, "%%Unable to allocate trunk %u.%s",
			index, VTY_NEWLINE);
		return CMD_WARNING;
	}

	vty->node = TRUNK_NODE;
	vty->index = trunk;
	return CMD_SUCCESS;
}

static int config_write_trunk(struct vty *vty)
{
	struct mgcp_trunk_config *trunk;

	llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
		vty_out(vty, " trunk %d%s", trunk->trunk_nr, VTY_NEWLINE);
		vty_out(vty, "  sdp audio payload number %d%s",
			trunk->audio_payload, VTY_NEWLINE);
		vty_out(vty, "  sdp audio payload name %s%s",
			trunk->audio_name, VTY_NEWLINE);
		vty_out(vty, "  loop %d%s",
			trunk->audio_loop, VTY_NEWLINE);
		vty_out(vty, "  allow-compression %s%s",
			mgcp_compr_name(g_cfg->trunk.compress_dir), VTY_NEWLINE);
	}

	return CMD_SUCCESS;
}

DEFUN(cfg_trunk_payload_number,
      cfg_trunk_payload_number_cmd,
      "sdp audio payload number <1-255>",
      "SDP related\n" "Audio\n" "Payload\n" "Payload Number\n")
{
	struct mgcp_trunk_config *trunk = vty->index;
	unsigned int payload = atoi(argv[0]);

	trunk->audio_payload = payload;
	return CMD_SUCCESS;
}

DEFUN(cfg_trunk_payload_name,
      cfg_trunk_payload_name_cmd,
      "sdp audio payload name NAME",
      "SDP related\n" "Audio\n" "Payload\n" "Payload Name\n")
{
	struct mgcp_trunk_config *trunk = vty->index;

	bsc_replace_string(g_cfg, &trunk->audio_name, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_trunk_loop,
      cfg_trunk_loop_cmd,
      "loop (0|1)",
      "Loop the audio")
{
	struct mgcp_trunk_config *trunk = vty->index;

	trunk->audio_loop = atoi(argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_trunk_compr,
      cfg_trunk_compr_cmd,
      "allow-compression (none|net|bts)",
      COMPR_STR)
{
	struct mgcp_trunk_config *trunk = vty->index;
	parse_compression(trunk, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_trunk_compr_batch,
      cfg_trunk_compr_batch_cmd,
      "compression batching <1-4>",
      COMPR_STR)
{
	struct mgcp_trunk_config *trunk = vty->index;
	trunk->compress_batch = atoi(argv[0]);
	return CMD_SUCCESS;
}

DEFUN(loop_endp,
      loop_endp_cmd,
      "loop-endpoint <0-64> NAME (0|1)",
      "Loop a given endpoint\n" "Trunk number\n"
      "The name in hex of the endpoint\n" "Disable the loop\n" "Enable the loop\n")
{
	struct mgcp_trunk_config *trunk;
	struct mgcp_endpoint *endp;

	trunk = find_trunk(g_cfg, atoi(argv[0]));
	if (!trunk) {
		vty_out(vty, "%%Trunk %d not found in the config.%s",
			atoi(argv[0]), VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (!trunk->endpoints) {
		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
			trunk->trunk_nr, VTY_NEWLINE);
		return CMD_WARNING;
	}

	int endp_no = strtoul(argv[1], NULL, 16);
	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
		vty_out(vty, "Loopback number %s/%d is invalid.%s",
		argv[1], endp_no, VTY_NEWLINE);
		return CMD_WARNING;
	}


	endp = &trunk->endpoints[endp_no];
	int loop = atoi(argv[2]);

	if (loop)
		endp->conn_mode = MGCP_CONN_LOOPBACK;
	else
		endp->conn_mode = endp->orig_mode;
	endp->allow_patch = 1;

	return CMD_SUCCESS;
}

DEFUN(tap_call,
      tap_call_cmd,
      "tap-call <0-64> ENDPOINT (bts-in|bts-out|net-in|net-out) A.B.C.D <0-65534>",
      "Forward data on endpoint to a different system\n" "Trunk number\n"
      "The endpoint in hex\n"
      "Forward the data coming from the bts\n"
      "Forward the data coming from the bts leaving to the network\n"
      "Forward the data coming from the net\n"
      "Forward the data coming from the net leaving to the bts\n"
      "destination IP of the data\n" "destination port\n")
{
	struct mgcp_rtp_tap *tap;
	struct mgcp_trunk_config *trunk;
	struct mgcp_endpoint *endp;
	int port = 0;

	trunk = find_trunk(g_cfg, atoi(argv[0]));
	if (!trunk) {
		vty_out(vty, "%%Trunk %d not found in the config.%s",
			atoi(argv[0]), VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (!trunk->endpoints) {
		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
			trunk->trunk_nr, VTY_NEWLINE);
		return CMD_WARNING;
	}

	int endp_no = strtoul(argv[1], NULL, 16);
	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
		argv[1], endp_no, VTY_NEWLINE);
		return CMD_WARNING;
	}

	endp = &trunk->endpoints[endp_no];

	if (strcmp(argv[2], "bts-in") == 0) {
		port = MGCP_TAP_BTS_IN;
	} else if (strcmp(argv[2], "bts-out") == 0) {
		port = MGCP_TAP_BTS_OUT;
	} else if (strcmp(argv[2], "net-in") == 0) {
		port = MGCP_TAP_NET_IN;
	} else if (strcmp(argv[2], "net-out") == 0) {
		port = MGCP_TAP_NET_OUT;
	} else {
		vty_out(vty, "Unknown mode... tricked vty?%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	tap = &endp->taps[port];
	memset(&tap->forward, 0, sizeof(tap->forward));
	inet_aton(argv[3], &tap->forward.sin_addr);
	tap->forward.sin_port = htons(atoi(argv[4]));
	tap->enabled = 1;
	return CMD_SUCCESS;
}

DEFUN(free_endp, free_endp_cmd,
      "free-endpoint <0-64> NUMBER",
      "Free the given endpoint\n" "Trunk number\n"
      "Endpoint number in hex.\n")
{
	struct mgcp_trunk_config *trunk;
	struct mgcp_endpoint *endp;

	trunk = find_trunk(g_cfg, atoi(argv[0]));
	if (!trunk) {
		vty_out(vty, "%%Trunk %d not found in the config.%s",
			atoi(argv[0]), VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (!trunk->endpoints) {
		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
			trunk->trunk_nr, VTY_NEWLINE);
		return CMD_WARNING;
	}

	int endp_no = strtoul(argv[1], NULL, 16);
	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
		argv[1], endp_no, VTY_NEWLINE);
		return CMD_WARNING;
	}

	endp = &trunk->endpoints[endp_no];
	mgcp_free_endp(endp);
	return CMD_SUCCESS;
}

int mgcp_vty_init(void)
{
	install_element_ve(&show_mgcp_cmd);
	install_element(ENABLE_NODE, &loop_endp_cmd);
	install_element(ENABLE_NODE, &tap_call_cmd);
	install_element(ENABLE_NODE, &free_endp_cmd);

	install_element(CONFIG_NODE, &cfg_mgcp_cmd);
	install_node(&mgcp_node, config_write_mgcp);

	install_default(MGCP_NODE);
	install_element(MGCP_NODE, &ournode_exit_cmd);
	install_element(MGCP_NODE, &ournode_end_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_bts_ip_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_base_port_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_base_port_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_net_base_port_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_range_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_net_range_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_transcoder_range_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_transcoder_base_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_dscp_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_tos_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_transcoder_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_no_transcoder_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_transcoder_remote_base_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_loop_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_compr_cmd);
	install_element(MGCP_NODE, &cfg_mgcp_compr_batch_cmd);

	install_element(MGCP_NODE, &cfg_mgcp_trunk_cmd);
	install_node(&trunk_node, config_write_trunk);
	install_default(TRUNK_NODE);
	install_element(TRUNK_NODE, &ournode_exit_cmd);
	install_element(TRUNK_NODE, &ournode_end_cmd);
	install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd);
	install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd);
	install_element(TRUNK_NODE, &cfg_trunk_loop_cmd);
	install_element(TRUNK_NODE, &cfg_trunk_compr_cmd);
	install_element(TRUNK_NODE, &cfg_trunk_compr_batch_cmd);

	return 0;
}

static int allocate_trunk(struct mgcp_trunk_config *trunk)
{
	int i;
	struct mgcp_config *cfg = trunk->cfg;

	if (mgcp_endpoints_allocate(trunk) != 0) {
		LOGP(DMGCP, LOGL_ERROR,
		     "Failed to allocate %d endpoints on trunk %d.\n",
		     trunk->number_endpoints, trunk->trunk_nr);
		return -1;
	}

	/* early bind */
	for (i = 1; i < trunk->number_endpoints; ++i) {
		struct mgcp_endpoint *endp = &trunk->endpoints[i];

		if (cfg->bts_ports.mode == PORT_ALLOC_STATIC) {
			cfg->last_bts_port += 2;
			if (mgcp_bind_bts_rtp_port(endp, cfg->last_bts_port) != 0) {
				LOGP(DMGCP, LOGL_FATAL,
				     "Failed to bind: %d\n", cfg->last_bts_port);
				return -1;
			}
			endp->bts_end.local_alloc = PORT_ALLOC_STATIC;
		}

		if (cfg->net_ports.mode == PORT_ALLOC_STATIC) {
			cfg->last_net_port += 2;
			if (mgcp_bind_net_rtp_port(endp, cfg->last_net_port) != 0) {
				LOGP(DMGCP, LOGL_FATAL,
				     "Failed to bind: %d\n", cfg->last_net_port);
				return -1;
			}
			endp->net_end.local_alloc = PORT_ALLOC_STATIC;
		}

		if (trunk->trunk_type == MGCP_TRUNK_VIRTUAL &&
		    cfg->transcoder_ip && cfg->transcoder_ports.mode == PORT_ALLOC_STATIC) {
			int rtp_port;

			/* network side */
			rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp),
						      cfg->transcoder_ports.base_port);
			if (mgcp_bind_trans_net_rtp_port(endp, rtp_port) != 0) {
				LOGP(DMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
				return -1;
			}
			endp->trans_net.local_alloc = PORT_ALLOC_STATIC;

			/* bts side */
			rtp_port = rtp_calculate_port(endp_back_channel(ENDPOINT_NUMBER(endp)),
						      cfg->transcoder_ports.base_port);
			if (mgcp_bind_trans_bts_rtp_port(endp, rtp_port) != 0) {
				LOGP(DMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
				return -1;
			}
			endp->trans_bts.local_alloc = PORT_ALLOC_STATIC;
		}
	}

	/* default batching _if_ compression is enabled */
	trunk->compress_batch = 4;

	return 0;
}

int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg)
{
	int rc;
	struct mgcp_trunk_config *trunk;

	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;
	}


	if (!g_cfg->bts_ip)
		fprintf(stderr, "No BTS ip address specified. This will allow everyone to connect.\n");

	if (!g_cfg->source_addr) {
		fprintf(stderr, "You need to specify a bind address.\n");
		return -1;
	}

	/* initialize the last ports */
	g_cfg->last_bts_port = rtp_calculate_port(0, g_cfg->bts_ports.base_port);
	g_cfg->last_net_port = rtp_calculate_port(0, g_cfg->net_ports.base_port);

	if (allocate_trunk(&g_cfg->trunk) != 0) {
		LOGP(DMGCP, LOGL_ERROR, "Failed to initialize the virtual trunk.\n");
		return -1;
	}

	llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
		if (allocate_trunk(trunk) != 0) {
			LOGP(DMGCP, LOGL_ERROR,
			     "Failed to initialize E1 trunk %d.\n", trunk->trunk_nr);
			return -1;
		}
	}

	return 0;
}