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parse.y (274870) parse.y (274939)
1%{
2/*-
3 * Copyright (c) 2012 The FreeBSD Foundation
4 * All rights reserved.
5 *
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
1%{
2/*-
3 * Copyright (c) 2012 The FreeBSD Foundation
4 * All rights reserved.
5 *
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: stable/10/usr.sbin/ctld/parse.y 274870 2014-11-22 17:50:14Z trasz $
30 * $FreeBSD: stable/10/usr.sbin/ctld/parse.y 274939 2014-11-24 00:47:04Z mav $
31 */
32
33#include <sys/queue.h>
34#include <sys/types.h>
35#include <sys/stat.h>
36#include <assert.h>
37#include <stdio.h>
38#include <stdint.h>
39#include <stdlib.h>
40#include <string.h>
41
42#include "ctld.h"
43
44extern FILE *yyin;
45extern char *yytext;
46extern int lineno;
47
48static struct conf *conf = NULL;
49static struct auth_group *auth_group = NULL;
50static struct portal_group *portal_group = NULL;
51static struct target *target = NULL;
52static struct lun *lun = NULL;
53
54extern void yyerror(const char *);
55extern int yylex(void);
56extern void yyrestart(FILE *);
57
58%}
59
60%token ALIAS AUTH_GROUP AUTH_TYPE BACKEND BLOCKSIZE CHAP CHAP_MUTUAL
61%token CLOSING_BRACKET DEBUG DEVICE_ID DISCOVERY_AUTH_GROUP INITIATOR_NAME
62%token INITIATOR_PORTAL LISTEN LISTEN_ISER LUN MAXPROC NUM OPENING_BRACKET
63%token OPTION PATH PIDFILE PORTAL_GROUP SERIAL SIZE STR TARGET TIMEOUT
31 */
32
33#include <sys/queue.h>
34#include <sys/types.h>
35#include <sys/stat.h>
36#include <assert.h>
37#include <stdio.h>
38#include <stdint.h>
39#include <stdlib.h>
40#include <string.h>
41
42#include "ctld.h"
43
44extern FILE *yyin;
45extern char *yytext;
46extern int lineno;
47
48static struct conf *conf = NULL;
49static struct auth_group *auth_group = NULL;
50static struct portal_group *portal_group = NULL;
51static struct target *target = NULL;
52static struct lun *lun = NULL;
53
54extern void yyerror(const char *);
55extern int yylex(void);
56extern void yyrestart(FILE *);
57
58%}
59
60%token ALIAS AUTH_GROUP AUTH_TYPE BACKEND BLOCKSIZE CHAP CHAP_MUTUAL
61%token CLOSING_BRACKET DEBUG DEVICE_ID DISCOVERY_AUTH_GROUP INITIATOR_NAME
62%token INITIATOR_PORTAL LISTEN LISTEN_ISER LUN MAXPROC NUM OPENING_BRACKET
63%token OPTION PATH PIDFILE PORTAL_GROUP SERIAL SIZE STR TARGET TIMEOUT
64%token ISNS_SERVER ISNS_PERIOD ISNS_TIMEOUT
64
65%union
66{
67 uint64_t num;
68 char *str;
69}
70
71%token <num> NUM
72%token <str> STR
73
74%%
75
76statements:
77 |
78 statements statement
79 ;
80
81statement:
82 debug
83 |
84 timeout
85 |
86 maxproc
87 |
88 pidfile
89 |
65
66%union
67{
68 uint64_t num;
69 char *str;
70}
71
72%token <num> NUM
73%token <str> STR
74
75%%
76
77statements:
78 |
79 statements statement
80 ;
81
82statement:
83 debug
84 |
85 timeout
86 |
87 maxproc
88 |
89 pidfile
90 |
91 isns_server
92 |
93 isns_period
94 |
95 isns_timeout
96 |
90 auth_group
91 |
92 portal_group
93 |
94 target
95 ;
96
97debug: DEBUG NUM
98 {
99 conf->conf_debug = $2;
100 }
101 ;
102
103timeout: TIMEOUT NUM
104 {
105 conf->conf_timeout = $2;
106 }
107 ;
108
109maxproc: MAXPROC NUM
110 {
111 conf->conf_maxproc = $2;
112 }
113 ;
114
115pidfile: PIDFILE STR
116 {
117 if (conf->conf_pidfile_path != NULL) {
118 log_warnx("pidfile specified more than once");
119 free($2);
120 return (1);
121 }
122 conf->conf_pidfile_path = $2;
123 }
124 ;
125
97 auth_group
98 |
99 portal_group
100 |
101 target
102 ;
103
104debug: DEBUG NUM
105 {
106 conf->conf_debug = $2;
107 }
108 ;
109
110timeout: TIMEOUT NUM
111 {
112 conf->conf_timeout = $2;
113 }
114 ;
115
116maxproc: MAXPROC NUM
117 {
118 conf->conf_maxproc = $2;
119 }
120 ;
121
122pidfile: PIDFILE STR
123 {
124 if (conf->conf_pidfile_path != NULL) {
125 log_warnx("pidfile specified more than once");
126 free($2);
127 return (1);
128 }
129 conf->conf_pidfile_path = $2;
130 }
131 ;
132
133isns_server: ISNS_SERVER STR
134 {
135 int error;
136
137 error = isns_new(conf, $2);
138 free($2);
139 if (error != 0)
140 return (1);
141 }
142 ;
143
144isns_period: ISNS_PERIOD NUM
145 {
146 conf->conf_isns_period = $2;
147 }
148 ;
149
150isns_timeout: ISNS_TIMEOUT NUM
151 {
152 conf->conf_isns_timeout = $2;
153 }
154 ;
155
126auth_group: AUTH_GROUP auth_group_name
127 OPENING_BRACKET auth_group_entries CLOSING_BRACKET
128 {
129 auth_group = NULL;
130 }
131 ;
132
133auth_group_name: STR
134 {
135 /*
136 * Make it possible to redefine default
137 * auth-group. but only once.
138 */
139 if (strcmp($1, "default") == 0 &&
140 conf->conf_default_ag_defined == false) {
141 auth_group = auth_group_find(conf, $1);
142 conf->conf_default_ag_defined = true;
143 } else {
144 auth_group = auth_group_new(conf, $1);
145 }
146 free($1);
147 if (auth_group == NULL)
148 return (1);
149 }
150 ;
151
152auth_group_entries:
153 |
154 auth_group_entries auth_group_entry
155 ;
156
157auth_group_entry:
158 auth_group_auth_type
159 |
160 auth_group_chap
161 |
162 auth_group_chap_mutual
163 |
164 auth_group_initiator_name
165 |
166 auth_group_initiator_portal
167 ;
168
169auth_group_auth_type: AUTH_TYPE STR
170 {
171 int error;
172
173 error = auth_group_set_type_str(auth_group, $2);
174 free($2);
175 if (error != 0)
176 return (1);
177 }
178 ;
179
180auth_group_chap: CHAP STR STR
181 {
182 const struct auth *ca;
183
184 ca = auth_new_chap(auth_group, $2, $3);
185 free($2);
186 free($3);
187 if (ca == NULL)
188 return (1);
189 }
190 ;
191
192auth_group_chap_mutual: CHAP_MUTUAL STR STR STR STR
193 {
194 const struct auth *ca;
195
196 ca = auth_new_chap_mutual(auth_group, $2, $3, $4, $5);
197 free($2);
198 free($3);
199 free($4);
200 free($5);
201 if (ca == NULL)
202 return (1);
203 }
204 ;
205
206auth_group_initiator_name: INITIATOR_NAME STR
207 {
208 const struct auth_name *an;
209
210 an = auth_name_new(auth_group, $2);
211 free($2);
212 if (an == NULL)
213 return (1);
214 }
215 ;
216
217auth_group_initiator_portal: INITIATOR_PORTAL STR
218 {
219 const struct auth_portal *ap;
220
221 ap = auth_portal_new(auth_group, $2);
222 free($2);
223 if (ap == NULL)
224 return (1);
225 }
226 ;
227
228portal_group: PORTAL_GROUP portal_group_name
229 OPENING_BRACKET portal_group_entries CLOSING_BRACKET
230 {
231 portal_group = NULL;
232 }
233 ;
234
235portal_group_name: STR
236 {
237 /*
238 * Make it possible to redefine default
239 * portal-group. but only once.
240 */
241 if (strcmp($1, "default") == 0 &&
242 conf->conf_default_pg_defined == false) {
243 portal_group = portal_group_find(conf, $1);
244 conf->conf_default_pg_defined = true;
245 } else {
246 portal_group = portal_group_new(conf, $1);
247 }
248 free($1);
249 if (portal_group == NULL)
250 return (1);
251 }
252 ;
253
254portal_group_entries:
255 |
256 portal_group_entries portal_group_entry
257 ;
258
259portal_group_entry:
260 portal_group_discovery_auth_group
261 |
262 portal_group_listen
263 |
264 portal_group_listen_iser
265 ;
266
267portal_group_discovery_auth_group: DISCOVERY_AUTH_GROUP STR
268 {
269 if (portal_group->pg_discovery_auth_group != NULL) {
270 log_warnx("discovery-auth-group for portal-group "
271 "\"%s\" specified more than once",
272 portal_group->pg_name);
273 return (1);
274 }
275 portal_group->pg_discovery_auth_group =
276 auth_group_find(conf, $2);
277 if (portal_group->pg_discovery_auth_group == NULL) {
278 log_warnx("unknown discovery-auth-group \"%s\" "
279 "for portal-group \"%s\"",
280 $2, portal_group->pg_name);
281 return (1);
282 }
283 free($2);
284 }
285 ;
286
287portal_group_listen: LISTEN STR
288 {
289 int error;
290
291 error = portal_group_add_listen(portal_group, $2, false);
292 free($2);
293 if (error != 0)
294 return (1);
295 }
296 ;
297
298portal_group_listen_iser: LISTEN_ISER STR
299 {
300 int error;
301
302 error = portal_group_add_listen(portal_group, $2, true);
303 free($2);
304 if (error != 0)
305 return (1);
306 }
307 ;
308
309target: TARGET target_name
310 OPENING_BRACKET target_entries CLOSING_BRACKET
311 {
312 target = NULL;
313 }
314 ;
315
316target_name: STR
317 {
318 target = target_new(conf, $1);
319 free($1);
320 if (target == NULL)
321 return (1);
322 }
323 ;
324
325target_entries:
326 |
327 target_entries target_entry
328 ;
329
330target_entry:
331 target_alias
332 |
333 target_auth_group
334 |
335 target_auth_type
336 |
337 target_chap
338 |
339 target_chap_mutual
340 |
341 target_initiator_name
342 |
343 target_initiator_portal
344 |
345 target_portal_group
346 |
347 target_lun
348 ;
349
350target_alias: ALIAS STR
351 {
352 if (target->t_alias != NULL) {
353 log_warnx("alias for target \"%s\" "
354 "specified more than once", target->t_name);
355 return (1);
356 }
357 target->t_alias = $2;
358 }
359 ;
360
361target_auth_group: AUTH_GROUP STR
362 {
363 if (target->t_auth_group != NULL) {
364 if (target->t_auth_group->ag_name != NULL)
365 log_warnx("auth-group for target \"%s\" "
366 "specified more than once", target->t_name);
367 else
368 log_warnx("cannot use both auth-group and explicit "
369 "authorisations for target \"%s\"",
370 target->t_name);
371 return (1);
372 }
373 target->t_auth_group = auth_group_find(conf, $2);
374 if (target->t_auth_group == NULL) {
375 log_warnx("unknown auth-group \"%s\" for target "
376 "\"%s\"", $2, target->t_name);
377 return (1);
378 }
379 free($2);
380 }
381 ;
382
383target_auth_type: AUTH_TYPE STR
384 {
385 int error;
386
387 if (target->t_auth_group != NULL) {
388 if (target->t_auth_group->ag_name != NULL) {
389 log_warnx("cannot use both auth-group and "
390 "auth-type for target \"%s\"",
391 target->t_name);
392 return (1);
393 }
394 } else {
395 target->t_auth_group = auth_group_new(conf, NULL);
396 if (target->t_auth_group == NULL) {
397 free($2);
398 return (1);
399 }
400 target->t_auth_group->ag_target = target;
401 }
402 error = auth_group_set_type_str(target->t_auth_group, $2);
403 free($2);
404 if (error != 0)
405 return (1);
406 }
407 ;
408
409target_chap: CHAP STR STR
410 {
411 const struct auth *ca;
412
413 if (target->t_auth_group != NULL) {
414 if (target->t_auth_group->ag_name != NULL) {
415 log_warnx("cannot use both auth-group and "
416 "chap for target \"%s\"",
417 target->t_name);
418 free($2);
419 free($3);
420 return (1);
421 }
422 } else {
423 target->t_auth_group = auth_group_new(conf, NULL);
424 if (target->t_auth_group == NULL) {
425 free($2);
426 free($3);
427 return (1);
428 }
429 target->t_auth_group->ag_target = target;
430 }
431 ca = auth_new_chap(target->t_auth_group, $2, $3);
432 free($2);
433 free($3);
434 if (ca == NULL)
435 return (1);
436 }
437 ;
438
439target_chap_mutual: CHAP_MUTUAL STR STR STR STR
440 {
441 const struct auth *ca;
442
443 if (target->t_auth_group != NULL) {
444 if (target->t_auth_group->ag_name != NULL) {
445 log_warnx("cannot use both auth-group and "
446 "chap-mutual for target \"%s\"",
447 target->t_name);
448 free($2);
449 free($3);
450 free($4);
451 free($5);
452 return (1);
453 }
454 } else {
455 target->t_auth_group = auth_group_new(conf, NULL);
456 if (target->t_auth_group == NULL) {
457 free($2);
458 free($3);
459 free($4);
460 free($5);
461 return (1);
462 }
463 target->t_auth_group->ag_target = target;
464 }
465 ca = auth_new_chap_mutual(target->t_auth_group,
466 $2, $3, $4, $5);
467 free($2);
468 free($3);
469 free($4);
470 free($5);
471 if (ca == NULL)
472 return (1);
473 }
474 ;
475
476target_initiator_name: INITIATOR_NAME STR
477 {
478 const struct auth_name *an;
479
480 if (target->t_auth_group != NULL) {
481 if (target->t_auth_group->ag_name != NULL) {
482 log_warnx("cannot use both auth-group and "
483 "initiator-name for target \"%s\"",
484 target->t_name);
485 free($2);
486 return (1);
487 }
488 } else {
489 target->t_auth_group = auth_group_new(conf, NULL);
490 if (target->t_auth_group == NULL) {
491 free($2);
492 return (1);
493 }
494 target->t_auth_group->ag_target = target;
495 }
496 an = auth_name_new(target->t_auth_group, $2);
497 free($2);
498 if (an == NULL)
499 return (1);
500 }
501 ;
502
503target_initiator_portal: INITIATOR_PORTAL STR
504 {
505 const struct auth_portal *ap;
506
507 if (target->t_auth_group != NULL) {
508 if (target->t_auth_group->ag_name != NULL) {
509 log_warnx("cannot use both auth-group and "
510 "initiator-portal for target \"%s\"",
511 target->t_name);
512 free($2);
513 return (1);
514 }
515 } else {
516 target->t_auth_group = auth_group_new(conf, NULL);
517 if (target->t_auth_group == NULL) {
518 free($2);
519 return (1);
520 }
521 target->t_auth_group->ag_target = target;
522 }
523 ap = auth_portal_new(target->t_auth_group, $2);
524 free($2);
525 if (ap == NULL)
526 return (1);
527 }
528 ;
529
530target_portal_group: PORTAL_GROUP STR
531 {
532 if (target->t_portal_group != NULL) {
533 log_warnx("portal-group for target \"%s\" "
534 "specified more than once", target->t_name);
535 free($2);
536 return (1);
537 }
538 target->t_portal_group = portal_group_find(conf, $2);
539 if (target->t_portal_group == NULL) {
540 log_warnx("unknown portal-group \"%s\" for target "
541 "\"%s\"", $2, target->t_name);
542 free($2);
543 return (1);
544 }
545 free($2);
546 }
547 ;
548
549target_lun: LUN lun_number
550 OPENING_BRACKET lun_entries CLOSING_BRACKET
551 {
552 lun = NULL;
553 }
554 ;
555
556lun_number: NUM
557 {
558 lun = lun_new(target, $1);
559 if (lun == NULL)
560 return (1);
561 }
562 ;
563
564lun_entries:
565 |
566 lun_entries lun_entry
567 ;
568
569lun_entry:
570 lun_backend
571 |
572 lun_blocksize
573 |
574 lun_device_id
575 |
576 lun_option
577 |
578 lun_path
579 |
580 lun_serial
581 |
582 lun_size
583 ;
584
585lun_backend: BACKEND STR
586 {
587 if (lun->l_backend != NULL) {
588 log_warnx("backend for lun %d, target \"%s\" "
589 "specified more than once",
590 lun->l_lun, target->t_name);
591 free($2);
592 return (1);
593 }
594 lun_set_backend(lun, $2);
595 free($2);
596 }
597 ;
598
599lun_blocksize: BLOCKSIZE NUM
600 {
601 if (lun->l_blocksize != 0) {
602 log_warnx("blocksize for lun %d, target \"%s\" "
603 "specified more than once",
604 lun->l_lun, target->t_name);
605 return (1);
606 }
607 lun_set_blocksize(lun, $2);
608 }
609 ;
610
611lun_device_id: DEVICE_ID STR
612 {
613 if (lun->l_device_id != NULL) {
614 log_warnx("device_id for lun %d, target \"%s\" "
615 "specified more than once",
616 lun->l_lun, target->t_name);
617 free($2);
618 return (1);
619 }
620 lun_set_device_id(lun, $2);
621 free($2);
622 }
623 ;
624
625lun_option: OPTION STR STR
626 {
627 struct lun_option *clo;
628
629 clo = lun_option_new(lun, $2, $3);
630 free($2);
631 free($3);
632 if (clo == NULL)
633 return (1);
634 }
635 ;
636
637lun_path: PATH STR
638 {
639 if (lun->l_path != NULL) {
640 log_warnx("path for lun %d, target \"%s\" "
641 "specified more than once",
642 lun->l_lun, target->t_name);
643 free($2);
644 return (1);
645 }
646 lun_set_path(lun, $2);
647 free($2);
648 }
649 ;
650
651lun_serial: SERIAL STR
652 {
653 if (lun->l_serial != NULL) {
654 log_warnx("serial for lun %d, target \"%s\" "
655 "specified more than once",
656 lun->l_lun, target->t_name);
657 free($2);
658 return (1);
659 }
660 lun_set_serial(lun, $2);
661 free($2);
662 } | SERIAL NUM
663 {
664 char *str = NULL;
665
666 if (lun->l_serial != NULL) {
667 log_warnx("serial for lun %d, target \"%s\" "
668 "specified more than once",
669 lun->l_lun, target->t_name);
670 return (1);
671 }
672 asprintf(&str, "%ju", $2);
673 lun_set_serial(lun, str);
674 free(str);
675 }
676 ;
677
678lun_size: SIZE NUM
679 {
680 if (lun->l_size != 0) {
681 log_warnx("size for lun %d, target \"%s\" "
682 "specified more than once",
683 lun->l_lun, target->t_name);
684 return (1);
685 }
686 lun_set_size(lun, $2);
687 }
688 ;
689%%
690
691void
692yyerror(const char *str)
693{
694
695 log_warnx("error in configuration file at line %d near '%s': %s",
696 lineno, yytext, str);
697}
698
699static void
700check_perms(const char *path)
701{
702 struct stat sb;
703 int error;
704
705 error = stat(path, &sb);
706 if (error != 0) {
707 log_warn("stat");
708 return;
709 }
710 if (sb.st_mode & S_IWOTH) {
711 log_warnx("%s is world-writable", path);
712 } else if (sb.st_mode & S_IROTH) {
713 log_warnx("%s is world-readable", path);
714 } else if (sb.st_mode & S_IXOTH) {
715 /*
716 * Ok, this one doesn't matter, but still do it,
717 * just for consistency.
718 */
719 log_warnx("%s is world-executable", path);
720 }
721
722 /*
723 * XXX: Should we also check for owner != 0?
724 */
725}
726
727struct conf *
728conf_new_from_file(const char *path)
729{
730 struct auth_group *ag;
731 struct portal_group *pg;
732 int error;
733
734 log_debugx("obtaining configuration from %s", path);
735
736 conf = conf_new();
737
738 ag = auth_group_new(conf, "default");
739 assert(ag != NULL);
740
741 ag = auth_group_new(conf, "no-authentication");
742 assert(ag != NULL);
743 ag->ag_type = AG_TYPE_NO_AUTHENTICATION;
744
745 ag = auth_group_new(conf, "no-access");
746 assert(ag != NULL);
747 ag->ag_type = AG_TYPE_DENY;
748
749 pg = portal_group_new(conf, "default");
750 assert(pg != NULL);
751
752 yyin = fopen(path, "r");
753 if (yyin == NULL) {
754 log_warn("unable to open configuration file %s", path);
755 conf_delete(conf);
756 return (NULL);
757 }
758 check_perms(path);
759 lineno = 1;
760 yyrestart(yyin);
761 error = yyparse();
762 auth_group = NULL;
763 portal_group = NULL;
764 target = NULL;
765 lun = NULL;
766 fclose(yyin);
767 if (error != 0) {
768 conf_delete(conf);
769 return (NULL);
770 }
771
772 if (conf->conf_default_ag_defined == false) {
773 log_debugx("auth-group \"default\" not defined; "
774 "going with defaults");
775 ag = auth_group_find(conf, "default");
776 assert(ag != NULL);
777 ag->ag_type = AG_TYPE_DENY;
778 }
779
780 if (conf->conf_default_pg_defined == false) {
781 log_debugx("portal-group \"default\" not defined; "
782 "going with defaults");
783 pg = portal_group_find(conf, "default");
784 assert(pg != NULL);
785 portal_group_add_listen(pg, "0.0.0.0:3260", false);
786 portal_group_add_listen(pg, "[::]:3260", false);
787 }
788
789 conf->conf_kernel_port_on = true;
790
791 error = conf_verify(conf);
792 if (error != 0) {
793 conf_delete(conf);
794 return (NULL);
795 }
796
797 return (conf);
798}
156auth_group: AUTH_GROUP auth_group_name
157 OPENING_BRACKET auth_group_entries CLOSING_BRACKET
158 {
159 auth_group = NULL;
160 }
161 ;
162
163auth_group_name: STR
164 {
165 /*
166 * Make it possible to redefine default
167 * auth-group. but only once.
168 */
169 if (strcmp($1, "default") == 0 &&
170 conf->conf_default_ag_defined == false) {
171 auth_group = auth_group_find(conf, $1);
172 conf->conf_default_ag_defined = true;
173 } else {
174 auth_group = auth_group_new(conf, $1);
175 }
176 free($1);
177 if (auth_group == NULL)
178 return (1);
179 }
180 ;
181
182auth_group_entries:
183 |
184 auth_group_entries auth_group_entry
185 ;
186
187auth_group_entry:
188 auth_group_auth_type
189 |
190 auth_group_chap
191 |
192 auth_group_chap_mutual
193 |
194 auth_group_initiator_name
195 |
196 auth_group_initiator_portal
197 ;
198
199auth_group_auth_type: AUTH_TYPE STR
200 {
201 int error;
202
203 error = auth_group_set_type_str(auth_group, $2);
204 free($2);
205 if (error != 0)
206 return (1);
207 }
208 ;
209
210auth_group_chap: CHAP STR STR
211 {
212 const struct auth *ca;
213
214 ca = auth_new_chap(auth_group, $2, $3);
215 free($2);
216 free($3);
217 if (ca == NULL)
218 return (1);
219 }
220 ;
221
222auth_group_chap_mutual: CHAP_MUTUAL STR STR STR STR
223 {
224 const struct auth *ca;
225
226 ca = auth_new_chap_mutual(auth_group, $2, $3, $4, $5);
227 free($2);
228 free($3);
229 free($4);
230 free($5);
231 if (ca == NULL)
232 return (1);
233 }
234 ;
235
236auth_group_initiator_name: INITIATOR_NAME STR
237 {
238 const struct auth_name *an;
239
240 an = auth_name_new(auth_group, $2);
241 free($2);
242 if (an == NULL)
243 return (1);
244 }
245 ;
246
247auth_group_initiator_portal: INITIATOR_PORTAL STR
248 {
249 const struct auth_portal *ap;
250
251 ap = auth_portal_new(auth_group, $2);
252 free($2);
253 if (ap == NULL)
254 return (1);
255 }
256 ;
257
258portal_group: PORTAL_GROUP portal_group_name
259 OPENING_BRACKET portal_group_entries CLOSING_BRACKET
260 {
261 portal_group = NULL;
262 }
263 ;
264
265portal_group_name: STR
266 {
267 /*
268 * Make it possible to redefine default
269 * portal-group. but only once.
270 */
271 if (strcmp($1, "default") == 0 &&
272 conf->conf_default_pg_defined == false) {
273 portal_group = portal_group_find(conf, $1);
274 conf->conf_default_pg_defined = true;
275 } else {
276 portal_group = portal_group_new(conf, $1);
277 }
278 free($1);
279 if (portal_group == NULL)
280 return (1);
281 }
282 ;
283
284portal_group_entries:
285 |
286 portal_group_entries portal_group_entry
287 ;
288
289portal_group_entry:
290 portal_group_discovery_auth_group
291 |
292 portal_group_listen
293 |
294 portal_group_listen_iser
295 ;
296
297portal_group_discovery_auth_group: DISCOVERY_AUTH_GROUP STR
298 {
299 if (portal_group->pg_discovery_auth_group != NULL) {
300 log_warnx("discovery-auth-group for portal-group "
301 "\"%s\" specified more than once",
302 portal_group->pg_name);
303 return (1);
304 }
305 portal_group->pg_discovery_auth_group =
306 auth_group_find(conf, $2);
307 if (portal_group->pg_discovery_auth_group == NULL) {
308 log_warnx("unknown discovery-auth-group \"%s\" "
309 "for portal-group \"%s\"",
310 $2, portal_group->pg_name);
311 return (1);
312 }
313 free($2);
314 }
315 ;
316
317portal_group_listen: LISTEN STR
318 {
319 int error;
320
321 error = portal_group_add_listen(portal_group, $2, false);
322 free($2);
323 if (error != 0)
324 return (1);
325 }
326 ;
327
328portal_group_listen_iser: LISTEN_ISER STR
329 {
330 int error;
331
332 error = portal_group_add_listen(portal_group, $2, true);
333 free($2);
334 if (error != 0)
335 return (1);
336 }
337 ;
338
339target: TARGET target_name
340 OPENING_BRACKET target_entries CLOSING_BRACKET
341 {
342 target = NULL;
343 }
344 ;
345
346target_name: STR
347 {
348 target = target_new(conf, $1);
349 free($1);
350 if (target == NULL)
351 return (1);
352 }
353 ;
354
355target_entries:
356 |
357 target_entries target_entry
358 ;
359
360target_entry:
361 target_alias
362 |
363 target_auth_group
364 |
365 target_auth_type
366 |
367 target_chap
368 |
369 target_chap_mutual
370 |
371 target_initiator_name
372 |
373 target_initiator_portal
374 |
375 target_portal_group
376 |
377 target_lun
378 ;
379
380target_alias: ALIAS STR
381 {
382 if (target->t_alias != NULL) {
383 log_warnx("alias for target \"%s\" "
384 "specified more than once", target->t_name);
385 return (1);
386 }
387 target->t_alias = $2;
388 }
389 ;
390
391target_auth_group: AUTH_GROUP STR
392 {
393 if (target->t_auth_group != NULL) {
394 if (target->t_auth_group->ag_name != NULL)
395 log_warnx("auth-group for target \"%s\" "
396 "specified more than once", target->t_name);
397 else
398 log_warnx("cannot use both auth-group and explicit "
399 "authorisations for target \"%s\"",
400 target->t_name);
401 return (1);
402 }
403 target->t_auth_group = auth_group_find(conf, $2);
404 if (target->t_auth_group == NULL) {
405 log_warnx("unknown auth-group \"%s\" for target "
406 "\"%s\"", $2, target->t_name);
407 return (1);
408 }
409 free($2);
410 }
411 ;
412
413target_auth_type: AUTH_TYPE STR
414 {
415 int error;
416
417 if (target->t_auth_group != NULL) {
418 if (target->t_auth_group->ag_name != NULL) {
419 log_warnx("cannot use both auth-group and "
420 "auth-type for target \"%s\"",
421 target->t_name);
422 return (1);
423 }
424 } else {
425 target->t_auth_group = auth_group_new(conf, NULL);
426 if (target->t_auth_group == NULL) {
427 free($2);
428 return (1);
429 }
430 target->t_auth_group->ag_target = target;
431 }
432 error = auth_group_set_type_str(target->t_auth_group, $2);
433 free($2);
434 if (error != 0)
435 return (1);
436 }
437 ;
438
439target_chap: CHAP STR STR
440 {
441 const struct auth *ca;
442
443 if (target->t_auth_group != NULL) {
444 if (target->t_auth_group->ag_name != NULL) {
445 log_warnx("cannot use both auth-group and "
446 "chap for target \"%s\"",
447 target->t_name);
448 free($2);
449 free($3);
450 return (1);
451 }
452 } else {
453 target->t_auth_group = auth_group_new(conf, NULL);
454 if (target->t_auth_group == NULL) {
455 free($2);
456 free($3);
457 return (1);
458 }
459 target->t_auth_group->ag_target = target;
460 }
461 ca = auth_new_chap(target->t_auth_group, $2, $3);
462 free($2);
463 free($3);
464 if (ca == NULL)
465 return (1);
466 }
467 ;
468
469target_chap_mutual: CHAP_MUTUAL STR STR STR STR
470 {
471 const struct auth *ca;
472
473 if (target->t_auth_group != NULL) {
474 if (target->t_auth_group->ag_name != NULL) {
475 log_warnx("cannot use both auth-group and "
476 "chap-mutual for target \"%s\"",
477 target->t_name);
478 free($2);
479 free($3);
480 free($4);
481 free($5);
482 return (1);
483 }
484 } else {
485 target->t_auth_group = auth_group_new(conf, NULL);
486 if (target->t_auth_group == NULL) {
487 free($2);
488 free($3);
489 free($4);
490 free($5);
491 return (1);
492 }
493 target->t_auth_group->ag_target = target;
494 }
495 ca = auth_new_chap_mutual(target->t_auth_group,
496 $2, $3, $4, $5);
497 free($2);
498 free($3);
499 free($4);
500 free($5);
501 if (ca == NULL)
502 return (1);
503 }
504 ;
505
506target_initiator_name: INITIATOR_NAME STR
507 {
508 const struct auth_name *an;
509
510 if (target->t_auth_group != NULL) {
511 if (target->t_auth_group->ag_name != NULL) {
512 log_warnx("cannot use both auth-group and "
513 "initiator-name for target \"%s\"",
514 target->t_name);
515 free($2);
516 return (1);
517 }
518 } else {
519 target->t_auth_group = auth_group_new(conf, NULL);
520 if (target->t_auth_group == NULL) {
521 free($2);
522 return (1);
523 }
524 target->t_auth_group->ag_target = target;
525 }
526 an = auth_name_new(target->t_auth_group, $2);
527 free($2);
528 if (an == NULL)
529 return (1);
530 }
531 ;
532
533target_initiator_portal: INITIATOR_PORTAL STR
534 {
535 const struct auth_portal *ap;
536
537 if (target->t_auth_group != NULL) {
538 if (target->t_auth_group->ag_name != NULL) {
539 log_warnx("cannot use both auth-group and "
540 "initiator-portal for target \"%s\"",
541 target->t_name);
542 free($2);
543 return (1);
544 }
545 } else {
546 target->t_auth_group = auth_group_new(conf, NULL);
547 if (target->t_auth_group == NULL) {
548 free($2);
549 return (1);
550 }
551 target->t_auth_group->ag_target = target;
552 }
553 ap = auth_portal_new(target->t_auth_group, $2);
554 free($2);
555 if (ap == NULL)
556 return (1);
557 }
558 ;
559
560target_portal_group: PORTAL_GROUP STR
561 {
562 if (target->t_portal_group != NULL) {
563 log_warnx("portal-group for target \"%s\" "
564 "specified more than once", target->t_name);
565 free($2);
566 return (1);
567 }
568 target->t_portal_group = portal_group_find(conf, $2);
569 if (target->t_portal_group == NULL) {
570 log_warnx("unknown portal-group \"%s\" for target "
571 "\"%s\"", $2, target->t_name);
572 free($2);
573 return (1);
574 }
575 free($2);
576 }
577 ;
578
579target_lun: LUN lun_number
580 OPENING_BRACKET lun_entries CLOSING_BRACKET
581 {
582 lun = NULL;
583 }
584 ;
585
586lun_number: NUM
587 {
588 lun = lun_new(target, $1);
589 if (lun == NULL)
590 return (1);
591 }
592 ;
593
594lun_entries:
595 |
596 lun_entries lun_entry
597 ;
598
599lun_entry:
600 lun_backend
601 |
602 lun_blocksize
603 |
604 lun_device_id
605 |
606 lun_option
607 |
608 lun_path
609 |
610 lun_serial
611 |
612 lun_size
613 ;
614
615lun_backend: BACKEND STR
616 {
617 if (lun->l_backend != NULL) {
618 log_warnx("backend for lun %d, target \"%s\" "
619 "specified more than once",
620 lun->l_lun, target->t_name);
621 free($2);
622 return (1);
623 }
624 lun_set_backend(lun, $2);
625 free($2);
626 }
627 ;
628
629lun_blocksize: BLOCKSIZE NUM
630 {
631 if (lun->l_blocksize != 0) {
632 log_warnx("blocksize for lun %d, target \"%s\" "
633 "specified more than once",
634 lun->l_lun, target->t_name);
635 return (1);
636 }
637 lun_set_blocksize(lun, $2);
638 }
639 ;
640
641lun_device_id: DEVICE_ID STR
642 {
643 if (lun->l_device_id != NULL) {
644 log_warnx("device_id for lun %d, target \"%s\" "
645 "specified more than once",
646 lun->l_lun, target->t_name);
647 free($2);
648 return (1);
649 }
650 lun_set_device_id(lun, $2);
651 free($2);
652 }
653 ;
654
655lun_option: OPTION STR STR
656 {
657 struct lun_option *clo;
658
659 clo = lun_option_new(lun, $2, $3);
660 free($2);
661 free($3);
662 if (clo == NULL)
663 return (1);
664 }
665 ;
666
667lun_path: PATH STR
668 {
669 if (lun->l_path != NULL) {
670 log_warnx("path for lun %d, target \"%s\" "
671 "specified more than once",
672 lun->l_lun, target->t_name);
673 free($2);
674 return (1);
675 }
676 lun_set_path(lun, $2);
677 free($2);
678 }
679 ;
680
681lun_serial: SERIAL STR
682 {
683 if (lun->l_serial != NULL) {
684 log_warnx("serial for lun %d, target \"%s\" "
685 "specified more than once",
686 lun->l_lun, target->t_name);
687 free($2);
688 return (1);
689 }
690 lun_set_serial(lun, $2);
691 free($2);
692 } | SERIAL NUM
693 {
694 char *str = NULL;
695
696 if (lun->l_serial != NULL) {
697 log_warnx("serial for lun %d, target \"%s\" "
698 "specified more than once",
699 lun->l_lun, target->t_name);
700 return (1);
701 }
702 asprintf(&str, "%ju", $2);
703 lun_set_serial(lun, str);
704 free(str);
705 }
706 ;
707
708lun_size: SIZE NUM
709 {
710 if (lun->l_size != 0) {
711 log_warnx("size for lun %d, target \"%s\" "
712 "specified more than once",
713 lun->l_lun, target->t_name);
714 return (1);
715 }
716 lun_set_size(lun, $2);
717 }
718 ;
719%%
720
721void
722yyerror(const char *str)
723{
724
725 log_warnx("error in configuration file at line %d near '%s': %s",
726 lineno, yytext, str);
727}
728
729static void
730check_perms(const char *path)
731{
732 struct stat sb;
733 int error;
734
735 error = stat(path, &sb);
736 if (error != 0) {
737 log_warn("stat");
738 return;
739 }
740 if (sb.st_mode & S_IWOTH) {
741 log_warnx("%s is world-writable", path);
742 } else if (sb.st_mode & S_IROTH) {
743 log_warnx("%s is world-readable", path);
744 } else if (sb.st_mode & S_IXOTH) {
745 /*
746 * Ok, this one doesn't matter, but still do it,
747 * just for consistency.
748 */
749 log_warnx("%s is world-executable", path);
750 }
751
752 /*
753 * XXX: Should we also check for owner != 0?
754 */
755}
756
757struct conf *
758conf_new_from_file(const char *path)
759{
760 struct auth_group *ag;
761 struct portal_group *pg;
762 int error;
763
764 log_debugx("obtaining configuration from %s", path);
765
766 conf = conf_new();
767
768 ag = auth_group_new(conf, "default");
769 assert(ag != NULL);
770
771 ag = auth_group_new(conf, "no-authentication");
772 assert(ag != NULL);
773 ag->ag_type = AG_TYPE_NO_AUTHENTICATION;
774
775 ag = auth_group_new(conf, "no-access");
776 assert(ag != NULL);
777 ag->ag_type = AG_TYPE_DENY;
778
779 pg = portal_group_new(conf, "default");
780 assert(pg != NULL);
781
782 yyin = fopen(path, "r");
783 if (yyin == NULL) {
784 log_warn("unable to open configuration file %s", path);
785 conf_delete(conf);
786 return (NULL);
787 }
788 check_perms(path);
789 lineno = 1;
790 yyrestart(yyin);
791 error = yyparse();
792 auth_group = NULL;
793 portal_group = NULL;
794 target = NULL;
795 lun = NULL;
796 fclose(yyin);
797 if (error != 0) {
798 conf_delete(conf);
799 return (NULL);
800 }
801
802 if (conf->conf_default_ag_defined == false) {
803 log_debugx("auth-group \"default\" not defined; "
804 "going with defaults");
805 ag = auth_group_find(conf, "default");
806 assert(ag != NULL);
807 ag->ag_type = AG_TYPE_DENY;
808 }
809
810 if (conf->conf_default_pg_defined == false) {
811 log_debugx("portal-group \"default\" not defined; "
812 "going with defaults");
813 pg = portal_group_find(conf, "default");
814 assert(pg != NULL);
815 portal_group_add_listen(pg, "0.0.0.0:3260", false);
816 portal_group_add_listen(pg, "[::]:3260", false);
817 }
818
819 conf->conf_kernel_port_on = true;
820
821 error = conf_verify(conf);
822 if (error != 0) {
823 conf_delete(conf);
824 return (NULL);
825 }
826
827 return (conf);
828}