summaryrefslogtreecommitdiffstats
path: root/src/vty/logging_vty.c
blob: 40daba10a48b96c32723fa2c40e8eecb8d820156 (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
/* OpenBSC logging helper for the VTY */
/* (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
 * (C) 2009-2014 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 General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

#include <stdlib.h>
#include <string.h>

#include "../../config.h"

#include <osmocom/core/talloc.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/strrb.h>
#include <osmocom/core/loggingrb.h>

#include <osmocom/vty/command.h>
#include <osmocom/vty/buffer.h>
#include <osmocom/vty/vty.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>

#define LOG_STR "Configure logging sub-system\n"

extern const struct log_info *osmo_log_info;

static void _vty_output(struct log_target *tgt,
			unsigned int level, const char *line)
{
	struct vty *vty = tgt->tgt_vty.vty;
	vty_out(vty, "%s", line);
	/* This is an ugly hack, but there is no easy way... */
	if (strchr(line, '\n'))
		vty_out(vty, "\r");
}

struct log_target *log_target_create_vty(struct vty *vty)
{
	struct log_target *target;

	target = log_target_create();
	if (!target)
		return NULL;

	target->tgt_vty.vty = vty;
	target->output = _vty_output;
	return target;
}

DEFUN(enable_logging,
      enable_logging_cmd,
      "logging enable",
	LOGGING_STR
      "Enables logging to this vty\n")
{
	struct telnet_connection *conn;

	conn = (struct telnet_connection *) vty->priv;
	if (conn->dbg) {
		vty_out(vty, "Logging already enabled.%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	conn->dbg = log_target_create_vty(vty);
	if (!conn->dbg)
		return CMD_WARNING;

	log_add_target(conn->dbg);
	return CMD_SUCCESS;
}

struct log_target *osmo_log_vty2tgt(struct vty *vty)
{
	struct telnet_connection *conn;

	if (vty->node == CFG_LOG_NODE)
		return vty->index;


	conn = (struct telnet_connection *) vty->priv;
	if (!conn->dbg)
		vty_out(vty, "Logging was not enabled.%s", VTY_NEWLINE);

	return conn->dbg;
}

DEFUN(logging_fltr_all,
      logging_fltr_all_cmd,
      "logging filter all (0|1)",
	LOGGING_STR FILTER_STR
	"Do you want to log all messages?\n"
	"Only print messages matched by other filters\n"
	"Bypass filter and print all messages\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	log_set_all_filter(tgt, atoi(argv[0]));
	return CMD_SUCCESS;
}

DEFUN(logging_use_clr,
      logging_use_clr_cmd,
      "logging color (0|1)",
	LOGGING_STR "Configure color-printing for log messages\n"
      "Don't use color for printing messages\n"
      "Use color for printing messages\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	log_set_use_color(tgt, atoi(argv[0]));
	return CMD_SUCCESS;
}

DEFUN(logging_prnt_timestamp,
      logging_prnt_timestamp_cmd,
      "logging timestamp (0|1)",
	LOGGING_STR "Configure log message timestamping\n"
	"Don't prefix each log message\n"
	"Prefix each log message with current timestamp\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	log_set_print_timestamp(tgt, atoi(argv[0]));
	return CMD_SUCCESS;
}

DEFUN(logging_prnt_ext_timestamp,
      logging_prnt_ext_timestamp_cmd,
      "logging print extended-timestamp (0|1)",
	LOGGING_STR "Log output settings\n"
	"Configure log message timestamping\n"
	"Don't prefix each log message\n"
	"Prefix each log message with current timestamp with YYYYMMDDhhmmssnnn\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	log_set_print_extended_timestamp(tgt, atoi(argv[0]));
	return CMD_SUCCESS;
}

DEFUN(logging_prnt_cat,
      logging_prnt_cat_cmd,
      "logging print category (0|1)",
	LOGGING_STR "Log output settings\n"
	"Configure log message\n"
	"Don't prefix each log message\n"
	"Prefix each log message with category/subsystem name\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	log_set_print_category(tgt, atoi(argv[0]));
	return CMD_SUCCESS;
}

DEFUN(logging_level,
      logging_level_cmd,
      NULL, /* cmdstr is dynamically set in logging_vty_add_cmds(). */
      NULL) /* same thing for helpstr. */
{
	int category = log_parse_category(argv[0]);
	int level = log_parse_level(argv[1]);
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	if (level < 0) {
		vty_out(vty, "Invalid level `%s'%s", argv[1], VTY_NEWLINE);
		return CMD_WARNING;
	}

	/* Check for special case where we want to set global log level */
	if (!strcmp(argv[0], "all")) {
		log_set_log_level(tgt, level);
		return CMD_SUCCESS;
	}

	if (category < 0) {
		vty_out(vty, "Invalid category `%s'%s", argv[0], VTY_NEWLINE);
		return CMD_WARNING;
	}

	tgt->categories[category].enabled = 1;
	tgt->categories[category].loglevel = level;

	return CMD_SUCCESS;
}

DEFUN(logging_set_category_mask,
      logging_set_category_mask_cmd,
      "logging set-log-mask MASK",
	LOGGING_STR
      "Set the logmask of this logging target\n"
      "The logmask to use\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	log_parse_category_mask(tgt, argv[0]);
	return CMD_SUCCESS;
}

ALIAS_DEPRECATED(logging_set_category_mask,
		 logging_set_category_mask_old_cmd,
		 "logging set log mask MASK",
		 LOGGING_STR
		 "Decide which categories to output.\n"
		 "Log commands\n" "Mask commands\n" "The logmask to use\n");


DEFUN(diable_logging,
      disable_logging_cmd,
      "logging disable",
	LOGGING_STR
      "Disables logging to this vty\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);
	struct telnet_connection *conn = (struct telnet_connection *) vty->priv;

	if (!tgt)
		return CMD_WARNING;

	log_del_target(tgt);
	talloc_free(tgt);
	conn->dbg = NULL;

	return CMD_SUCCESS;
}

static void vty_print_logtarget(struct vty *vty, const struct log_info *info,
				const struct log_target *tgt)
{
	unsigned int i;

	vty_out(vty, " Global Loglevel: %s%s",
		log_level_str(tgt->loglevel), VTY_NEWLINE);
	vty_out(vty, " Use color: %s, Print Timestamp: %s%s",
		tgt->use_color ? "On" : "Off",
		tgt->print_timestamp ? "On" : "Off", VTY_NEWLINE);

	vty_out(vty, " Log Level specific information:%s", VTY_NEWLINE);

	for (i = 0; i < info->num_cat; i++) {
		const struct log_category *cat = &tgt->categories[i];
		vty_out(vty, "  %-10s %-10s %-8s %s%s",
			info->cat[i].name+1, log_level_str(cat->loglevel),
			cat->enabled ? "Enabled" : "Disabled",
 			info->cat[i].description,
			VTY_NEWLINE);
	}

	vty_out(vty, " Log Filter 'ALL': %s%s",
		tgt->filter_map & LOG_FILTER_ALL ? "Enabled" : "Disabled",
		VTY_NEWLINE);

	/* print application specific filters */
	if (info->print_fn)
		info->print_fn(vty, info, tgt);
}

#define SHOW_LOG_STR "Show current logging configuration\n"

DEFUN(show_logging_vty,
	show_logging_vty_cmd,
	"show logging vty",
	SHOW_STR SHOW_LOG_STR
	"Show current logging configuration for this vty\n")
{
	struct log_target *tgt = osmo_log_vty2tgt(vty);

	if (!tgt)
		return CMD_WARNING;

	vty_print_logtarget(vty, osmo_log_info, tgt);

	return CMD_SUCCESS;
}

DEFUN(show_alarms,
	show_alarms_cmd,
	"show alarms",
	SHOW_STR SHOW_LOG_STR
	"Show the contents of the logging ringbuffer\n")
{
	int i, num_alarms;
	struct osmo_strrb *rb;
	struct log_target *tgt = log_target_find(LOG_TGT_TYPE_STRRB, NULL);
	if (!tgt) {
		vty_out(vty, "%% No alarms, run 'log alarms <2-32700>'%s",
			VTY_NEWLINE);
		return CMD_WARNING;
	}

	rb = tgt->tgt_rb.rb;
	num_alarms = osmo_strrb_elements(rb);

	vty_out(vty, "%% Showing %i alarms%s", num_alarms, VTY_NEWLINE);

	for (i = 0; i < num_alarms; i++)
		vty_out(vty, "%% %s%s", osmo_strrb_get_nth(rb, i),
			VTY_NEWLINE);

	return CMD_SUCCESS;
}

gDEFUN(cfg_description, cfg_description_cmd,
	"description .TEXT",
	"Save human-readable decription of the object\n"
	"Text until the end of the line\n")
{
	char **dptr = vty->index_sub;

	if (!dptr) {
		vty_out(vty, "vty->index_sub == NULL%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (*dptr)
		talloc_free(*dptr);
	*dptr = argv_concat(argv, argc, 0);
	if (!*dptr)
		return CMD_WARNING;

	return CMD_SUCCESS;
}

gDEFUN(cfg_no_description, cfg_no_description_cmd,
	"no description",
	NO_STR
	"Remove description of the object\n")
{
	char **dptr = vty->index_sub;

	if (!dptr) {
		vty_out(vty, "vty->index_sub == NULL%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	if (*dptr) {
		talloc_free(*dptr);
		*dptr = NULL;
	}

	return CMD_SUCCESS;
}

/* Support for configuration of log targets != the current vty */

struct cmd_node cfg_log_node = {
	CFG_LOG_NODE,
	"%s(config-log)# ",
	1
};

#ifdef HAVE_SYSLOG_H

#include <syslog.h>

static const int local_sysl_map[] = {
	[0] = LOG_LOCAL0,
	[1] = LOG_LOCAL1,
	[2] = LOG_LOCAL2,
	[3] = LOG_LOCAL3,
	[4] = LOG_LOCAL4,
	[5] = LOG_LOCAL5,
	[6] = LOG_LOCAL6,
	[7] = LOG_LOCAL7
};

/* From VTY core code */
extern struct host host;

static int _cfg_log_syslog(struct vty *vty, int facility)
{
	struct log_target *tgt;

	/* First delete the old syslog target, if any */
	tgt = log_target_find(LOG_TGT_TYPE_SYSLOG, NULL);
	if (tgt)
		log_target_destroy(tgt);

	tgt = log_target_create_syslog(host.app_info->name, 0, facility);
	if (!tgt) {
		vty_out(vty, "%% Unable to open syslog%s", VTY_NEWLINE);
		return CMD_WARNING;
	}
	log_add_target(tgt);

	vty->index = tgt;
	vty->node = CFG_LOG_NODE;

	return CMD_SUCCESS;
}

DEFUN(cfg_log_syslog_local, cfg_log_syslog_local_cmd,
      "log syslog local <0-7>",
	LOG_STR "Logging via syslog\n" "Syslog LOCAL facility\n"
	"Local facility number\n")
{
	int local = atoi(argv[0]);
	int facility = local_sysl_map[local];

	return _cfg_log_syslog(vty, facility);
}

static struct value_string sysl_level_names[] = {
	{ LOG_AUTHPRIV, "authpriv" },
	{ LOG_CRON, 	"cron" },
	{ LOG_DAEMON,	"daemon" },
	{ LOG_FTP,	"ftp" },
	{ LOG_LPR,	"lpr" },
	{ LOG_MAIL,	"mail" },
	{ LOG_NEWS,	"news" },
	{ LOG_USER,	"user" },
	{ LOG_UUCP,	"uucp" },
	/* only for value -> string conversion */
	{ LOG_LOCAL0,	"local 0" },
	{ LOG_LOCAL1,	"local 1" },
	{ LOG_LOCAL2,	"local 2" },
	{ LOG_LOCAL3,	"local 3" },
	{ LOG_LOCAL4,	"local 4" },
	{ LOG_LOCAL5,	"local 5" },
	{ LOG_LOCAL6,	"local 6" },
	{ LOG_LOCAL7,	"local 7" },
	{ 0, NULL }
};

DEFUN(cfg_log_syslog, cfg_log_syslog_cmd,
      "log syslog (authpriv|cron|daemon|ftp|lpr|mail|news|user|uucp)",
	LOG_STR "Logging via syslog\n"
	"Security/authorization messages facility\n"
	"Clock daemon (cron/at) facility\n"
	"General system daemon facility\n"
	"Ftp daemon facility\n"
	"Line printer facility\n"
	"Mail facility\n"
	"News facility\n"
	"Generic facility\n"
	"UUCP facility\n")
{
	int facility = get_string_value(sysl_level_names, argv[0]);

	return _cfg_log_syslog(vty, facility);
}

DEFUN(cfg_no_log_syslog, cfg_no_log_syslog_cmd,
	"no log syslog",
	NO_STR LOG_STR "Logging via syslog\n")
{
	struct log_target *tgt;

	tgt = log_target_find(LOG_TGT_TYPE_SYSLOG, NULL);
	if (!tgt) {
		vty_out(vty, "%% No syslog target found%s",
			VTY_NEWLINE);
		return CMD_WARNING;
	}

	log_target_destroy(tgt);

	return CMD_SUCCESS;
}
#endif /* HAVE_SYSLOG_H */

DEFUN(cfg_log_stderr, cfg_log_stderr_cmd,
	"log stderr",
	LOG_STR "Logging via STDERR of the process\n")
{
	struct log_target *tgt;

	tgt = log_target_find(LOG_TGT_TYPE_STDERR, NULL);
	if (!tgt) {
		tgt = log_target_create_stderr();
		if (!tgt) {
			vty_out(vty, "%% Unable to create stderr log%s",
				VTY_NEWLINE);
			return CMD_WARNING;
		}
		log_add_target(tgt);
	}

	vty->index = tgt;
	vty->node = CFG_LOG_NODE;

	return CMD_SUCCESS;
}

DEFUN(cfg_no_log_stderr, cfg_no_log_stderr_cmd,
	"no log stderr",
	NO_STR LOG_STR "Logging via STDERR of the process\n")
{
	struct log_target *tgt;

	tgt = log_target_find(LOG_TGT_TYPE_STDERR, NULL);
	if (!tgt) {
		vty_out(vty, "%% No stderr logging active%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	log_target_destroy(tgt);

	return CMD_SUCCESS;
}

DEFUN(cfg_log_file, cfg_log_file_cmd,
	"log file .FILENAME",
	LOG_STR "Logging to text file\n" "Filename\n")
{
	const char *fname = argv[0];
	struct log_target *tgt;

	tgt = log_target_find(LOG_TGT_TYPE_FILE, fname);
	if (!tgt) {
		tgt = log_target_create_file(fname);
		if (!tgt) {
			vty_out(vty, "%% Unable to create file `%s'%s",
				fname, VTY_NEWLINE);
			return CMD_WARNING;
		}
		log_add_target(tgt);
	}

	vty->index = tgt;
	vty->node = CFG_LOG_NODE;

	return CMD_SUCCESS;
}


DEFUN(cfg_no_log_file, cfg_no_log_file_cmd,
	"no log file .FILENAME",
	NO_STR LOG_STR "Logging to text file\n" "Filename\n")
{
	const char *fname = argv[0];
	struct log_target *tgt;

	tgt = log_target_find(LOG_TGT_TYPE_FILE, fname);
	if (!tgt) {
		vty_out(vty, "%% No such log file `%s'%s",
			fname, VTY_NEWLINE);
		return CMD_WARNING;
	}

	log_target_destroy(tgt);

	return CMD_SUCCESS;
}

DEFUN(cfg_log_alarms, cfg_log_alarms_cmd,
	"log alarms <2-32700>",
	LOG_STR "Logging alarms to osmo_strrb\n"
	"Maximum number of messages to log\n")
{
	struct log_target *tgt;
	unsigned int rbsize = atoi(argv[0]);

	tgt = log_target_find(LOG_TGT_TYPE_STRRB, NULL);
	if (tgt)
		log_target_destroy(tgt);

	tgt = log_target_create_rb(rbsize);
	if (!tgt) {
		vty_out(vty, "%% Unable to create osmo_strrb (size %u)%s",
			rbsize, VTY_NEWLINE);
		return CMD_WARNING;
	}
	log_add_target(tgt);

	vty->index = tgt;
	vty->node = CFG_LOG_NODE;

	return CMD_SUCCESS;
}

DEFUN(cfg_no_log_alarms, cfg_no_log_alarms_cmd,
	"no log alarms",
	NO_STR LOG_STR "Logging alarms to osmo_strrb\n")
{
	struct log_target *tgt;

	tgt = log_target_find(LOG_TGT_TYPE_STRRB, NULL);
	if (!tgt) {
		vty_out(vty, "%% No osmo_strrb target found%s", VTY_NEWLINE);
		return CMD_WARNING;
	}

	log_target_destroy(tgt);

	return CMD_SUCCESS;
}

static int config_write_log_single(struct vty *vty, struct log_target *tgt)
{
	int i;
	char level_lower[32];

	switch (tgt->type) {
	case LOG_TGT_TYPE_VTY:
		return 1;
		break;
	case LOG_TGT_TYPE_STDERR:
		vty_out(vty, "log stderr%s", VTY_NEWLINE);
		break;
	case LOG_TGT_TYPE_SYSLOG:
#ifdef HAVE_SYSLOG_H
		vty_out(vty, "log syslog %s%s",
			get_value_string(sysl_level_names,
					 tgt->tgt_syslog.facility),
			VTY_NEWLINE);
#endif
		break;
	case LOG_TGT_TYPE_FILE:
		vty_out(vty, "log file %s%s", tgt->tgt_file.fname, VTY_NEWLINE);
		break;
	case LOG_TGT_TYPE_STRRB:
		vty_out(vty, "log alarms %zu%s",
			log_target_rb_avail_size(tgt), VTY_NEWLINE);
		break;
	}

	vty_out(vty, "  logging filter all %u%s",
		tgt->filter_map & LOG_FILTER_ALL ? 1 : 0, VTY_NEWLINE);
	/* save filters outside of libosmocore, i.e. in app code */
	if (osmo_log_info->save_fn)
		osmo_log_info->save_fn(vty, osmo_log_info, tgt);

	vty_out(vty, "  logging color %u%s", tgt->use_color ? 1 : 0,
		VTY_NEWLINE);
	vty_out(vty, "  logging print category %d%s",
		tgt->print_ext_timestamp ? 1 : 0, VTY_NEWLINE);
	if (tgt->print_ext_timestamp)
		vty_out(vty, "  logging print extended-timestamp 1%s", VTY_NEWLINE);
	else
		vty_out(vty, "  logging timestamp %u%s",
			tgt->print_timestamp ? 1 : 0, VTY_NEWLINE);

	/* stupid old osmo logging API uses uppercase strings... */
	osmo_str2lower(level_lower, log_level_str(tgt->loglevel));
	vty_out(vty, "  logging level all %s%s", level_lower, VTY_NEWLINE);

	for (i = 0; i < osmo_log_info->num_cat; i++) {
		const struct log_category *cat = &tgt->categories[i];
		char cat_lower[32];

		/* skip empty entries in the array */
		if (!osmo_log_info->cat[i].name)
			continue;

		/* stupid old osmo logging API uses uppercase strings... */
		osmo_str2lower(cat_lower, osmo_log_info->cat[i].name+1);
		osmo_str2lower(level_lower, log_level_str(cat->loglevel));

		vty_out(vty, "  logging level %s %s%s", cat_lower, level_lower,
			VTY_NEWLINE);
	}

	/* FIXME: levels */

	return 1;
}

static int config_write_log(struct vty *vty)
{
	struct log_target *dbg = vty->index;

	llist_for_each_entry(dbg, &osmo_log_target_list, entry)
		config_write_log_single(vty, dbg);

	return 1;
}

void logging_vty_add_cmds(const struct log_info *cat)
{
	install_element_ve(&enable_logging_cmd);
	install_element_ve(&disable_logging_cmd);
	install_element_ve(&logging_fltr_all_cmd);
	install_element_ve(&logging_use_clr_cmd);
	install_element_ve(&logging_prnt_timestamp_cmd);
	install_element_ve(&logging_prnt_ext_timestamp_cmd);
	install_element_ve(&logging_prnt_cat_cmd);
	install_element_ve(&logging_set_category_mask_cmd);
	install_element_ve(&logging_set_category_mask_old_cmd);

	/* Logging level strings are generated dynamically. */
	logging_level_cmd.string = log_vty_command_string(cat);
	logging_level_cmd.doc = log_vty_command_description(cat);
	install_element_ve(&logging_level_cmd);
	install_element_ve(&show_logging_vty_cmd);
	install_element_ve(&show_alarms_cmd);

	install_node(&cfg_log_node, config_write_log);
	vty_install_default(CFG_LOG_NODE);
	install_element(CFG_LOG_NODE, &logging_fltr_all_cmd);
	install_element(CFG_LOG_NODE, &logging_use_clr_cmd);
	install_element(CFG_LOG_NODE, &logging_prnt_timestamp_cmd);
	install_element(CFG_LOG_NODE, &logging_prnt_ext_timestamp_cmd);
	install_element(CFG_LOG_NODE, &logging_prnt_cat_cmd);
	install_element(CFG_LOG_NODE, &logging_level_cmd);

	install_element(CONFIG_NODE, &cfg_log_stderr_cmd);
	install_element(CONFIG_NODE, &cfg_no_log_stderr_cmd);
	install_element(CONFIG_NODE, &cfg_log_file_cmd);
	install_element(CONFIG_NODE, &cfg_no_log_file_cmd);
	install_element(CONFIG_NODE, &cfg_log_alarms_cmd);
	install_element(CONFIG_NODE, &cfg_no_log_alarms_cmd);
#ifdef HAVE_SYSLOG_H
	install_element(CONFIG_NODE, &cfg_log_syslog_cmd);
	install_element(CONFIG_NODE, &cfg_log_syslog_local_cmd);
	install_element(CONFIG_NODE, &cfg_no_log_syslog_cmd);
#endif
}