87 [IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL},
88 [IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT},
89 [IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL},
90#ifdef INET
91 [IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV | PF_REV},
92#endif
93#ifdef INET6
94 [IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV | PF_REV},
95#endif
96 [IP__MOUNT_FROM_FSTAB] = {"mount.fstab", PF_INTERNAL | PF_CONV | PF_REV},
97 [IP__OP] = {NULL, PF_CONV},
98 [KP_ALLOW_CHFLAGS] = {"allow.chflags", 0},
99 [KP_ALLOW_MOUNT] = {"allow.mount", 0},
100 [KP_ALLOW_RAW_SOCKETS] = {"allow.raw_sockets", 0},
101 [KP_ALLOW_SET_HOSTNAME]= {"allow.set_hostname", 0},
102 [KP_ALLOW_SOCKET_AF] = {"allow.socket_af", 0},
103 [KP_ALLOW_SYSVIPC] = {"allow.sysvipc", 0},
104 [KP_DEVFS_RULESET] = {"devfs_ruleset", 0},
105 [KP_ENFORCE_STATFS] = {"enforce_statfs", 0},
106 [KP_HOST_HOSTNAME] = {"host.hostname", 0},
107#ifdef INET
108 [KP_IP4_ADDR] = {"ip4.addr", 0},
109#endif
110#ifdef INET6
111 [KP_IP6_ADDR] = {"ip6.addr", 0},
112#endif
113 [KP_JID] = {"jid", 0},
114 [KP_NAME] = {"name", 0},
115 [KP_PATH] = {"path", 0},
116 [KP_PERSIST] = {"persist", 0},
117 [KP_SECURELEVEL] = {"securelevel", 0},
118 [KP_VNET] = {"vnet", 0},
119};
120
121/*
122 * Parse the jail configuration file.
123 */
124void
125load_config(void)
126{
127 struct cfjails wild;
128 struct cfparams opp;
129 struct cfjail *j, *tj, *wj;
130 struct cfparam *p, *vp, *tp;
131 struct cfstring *s, *vs, *ns;
132 struct cfvar *v;
133 char *ep;
134 size_t varoff;
135 int did_self, jseq, pgen;
136
137 if (!strcmp(cfname, "-")) {
138 cfname = "STDIN";
139 yyin = stdin;
140 } else {
141 yyin = fopen(cfname, "r");
142 if (!yyin)
143 err(1, "%s", cfname);
144 }
145 if (yyparse() || yynerrs)
146 exit(1);
147
148 /* Separate the wildcard jails out from the actual jails. */
149 jseq = 0;
150 TAILQ_INIT(&wild);
151 TAILQ_FOREACH_SAFE(j, &cfjails, tq, tj) {
152 j->seq = ++jseq;
153 if (wild_jail_name(j->name))
154 requeue(j, &wild);
155 }
156
157 TAILQ_FOREACH(j, &cfjails, tq) {
158 /* Set aside the jail's parameters. */
159 TAILQ_INIT(&opp);
160 TAILQ_CONCAT(&opp, &j->params, tq);
161 /*
162 * The jail name implies its "name" or "jid" parameter,
163 * though they may also be explicitly set later on.
164 */
165 add_param(j, NULL,
166 strtol(j->name, &ep, 10) && !*ep ? KP_JID : KP_NAME,
167 j->name);
168 /*
169 * Collect parameters for the jail, global parameters/variables,
170 * and any matching wildcard jails.
171 */
172 did_self = 0;
173 TAILQ_FOREACH(wj, &wild, tq) {
174 if (j->seq < wj->seq && !did_self) {
175 TAILQ_FOREACH(p, &opp, tq)
176 add_param(j, p, 0, NULL);
177 did_self = 1;
178 }
179 if (wild_jail_match(j->name, wj->name))
180 TAILQ_FOREACH(p, &wj->params, tq)
181 add_param(j, p, 0, NULL);
182 }
183 if (!did_self)
184 TAILQ_FOREACH(p, &opp, tq)
185 add_param(j, p, 0, NULL);
186
187 /* Resolve any variable substitutions. */
188 pgen = 0;
189 TAILQ_FOREACH(p, &j->params, tq) {
190 p->gen = ++pgen;
191 find_vars:
192 TAILQ_FOREACH(s, &p->val, tq) {
193 varoff = 0;
194 while ((v = STAILQ_FIRST(&s->vars))) {
195 TAILQ_FOREACH(vp, &j->params, tq)
196 if (!strcmp(vp->name, v->name))
197 break;
198 if (!vp) {
199 jail_warnx(j,
200 "%s: variable \"%s\" not found",
201 p->name, v->name);
202 bad_var:
203 j->flags |= JF_FAILED;
204 TAILQ_FOREACH(vp, &j->params, tq)
205 if (vp->gen == pgen)
206 vp->flags |= PF_BAD;
207 goto free_var;
208 }
209 if (vp->flags & PF_BAD)
210 goto bad_var;
211 if (vp->gen == pgen) {
212 jail_warnx(j, "%s: variable loop",
213 v->name);
214 goto bad_var;
215 }
216 TAILQ_FOREACH(vs, &vp->val, tq)
217 if (!STAILQ_EMPTY(&vs->vars)) {
218 vp->gen = pgen;
219 TAILQ_REMOVE(&j->params, vp,
220 tq);
221 TAILQ_INSERT_BEFORE(p, vp, tq);
222 p = vp;
223 goto find_vars;
224 }
225 vs = TAILQ_FIRST(&vp->val);
226 if (TAILQ_NEXT(vs, tq) != NULL &&
227 (s->s[0] != '\0' ||
228 STAILQ_NEXT(v, tq))) {
229 jail_warnx(j, "%s: array cannot be "
230 "substituted inline",
231 p->name);
232 goto bad_var;
233 }
234 s->s = erealloc(s->s, s->len + vs->len + 1);
235 memmove(s->s + v->pos + varoff + vs->len,
236 s->s + v->pos + varoff,
237 s->len - (v->pos + varoff) + 1);
238 memcpy(s->s + v->pos + varoff, vs->s, vs->len);
239 varoff += vs->len;
240 s->len += vs->len;
241 while ((vs = TAILQ_NEXT(vs, tq))) {
242 ns = emalloc(sizeof(struct cfstring));
243 ns->s = estrdup(vs->s);
244 ns->len = vs->len;
245 STAILQ_INIT(&ns->vars);
246 TAILQ_INSERT_AFTER(&p->val, s, ns, tq);
247 s = ns;
248 }
249 free_var:
250 free(v->name);
251 STAILQ_REMOVE_HEAD(&s->vars, tq);
252 free(v);
253 }
254 }
255 }
256
257 /* Free the jail's original parameter list and any variables. */
258 while ((p = TAILQ_FIRST(&opp)))
259 free_param(&opp, p);
260 TAILQ_FOREACH_SAFE(p, &j->params, tq, tp)
261 if (p->flags & PF_VAR)
262 free_param(&j->params, p);
263 }
264 while ((wj = TAILQ_FIRST(&wild))) {
265 free(wj->name);
266 while ((p = TAILQ_FIRST(&wj->params)))
267 free_param(&wj->params, p);
268 TAILQ_REMOVE(&wild, wj, tq);
269 }
270}
271
272/*
273 * Create a new jail record.
274 */
275struct cfjail *
276add_jail(void)
277{
278 struct cfjail *j;
279
280 j = emalloc(sizeof(struct cfjail));
281 memset(j, 0, sizeof(struct cfjail));
282 TAILQ_INIT(&j->params);
283 STAILQ_INIT(&j->dep[DEP_FROM]);
284 STAILQ_INIT(&j->dep[DEP_TO]);
285 j->queue = &cfjails;
286 TAILQ_INSERT_TAIL(&cfjails, j, tq);
287 return j;
288}
289
290/*
291 * Add a parameter to a jail.
292 */
293void
294add_param(struct cfjail *j, const struct cfparam *p, enum intparam ipnum,
295 const char *value)
296{
297 struct cfstrings nss;
298 struct cfparam *dp, *np;
299 struct cfstring *s, *ns;
300 struct cfvar *v, *nv;
301 const char *name;
302 char *cs, *tname;
303 unsigned flags;
304
305 if (j == NULL) {
306 /* Create a single anonymous jail if one doesn't yet exist. */
307 j = TAILQ_LAST(&cfjails, cfjails);
308 if (j == NULL)
309 j = add_jail();
310 }
311 TAILQ_INIT(&nss);
312 if (p != NULL) {
313 name = p->name;
314 flags = p->flags;
315 /*
316 * Make a copy of the parameter's string list,
317 * which may be freed if it's overridden later.
318 */
319 TAILQ_FOREACH(s, &p->val, tq) {
320 ns = emalloc(sizeof(struct cfstring));
321 ns->s = estrdup(s->s);
322 ns->len = s->len;
323 STAILQ_INIT(&ns->vars);
324 STAILQ_FOREACH(v, &s->vars, tq) {
325 nv = emalloc(sizeof(struct cfvar));
326 nv->name = strdup(v->name);
327 nv->pos = v->pos;
328 STAILQ_INSERT_TAIL(&ns->vars, nv, tq);
329 }
330 TAILQ_INSERT_TAIL(&nss, ns, tq);
331 }
332 } else {
333 flags = PF_APPEND;
334 if (ipnum != IP__NULL) {
335 name = intparams[ipnum].name;
336 flags |= intparams[ipnum].flags;
337 } else if ((cs = strchr(value, '='))) {
338 tname = alloca(cs - value + 1);
339 strlcpy(tname, value, cs - value + 1);
340 name = tname;
341 value = cs + 1;
342 } else {
343 name = value;
344 value = NULL;
345 }
346 if (value != NULL) {
347 ns = emalloc(sizeof(struct cfstring));
348 ns->s = estrdup(value);
349 ns->len = strlen(value);
350 STAILQ_INIT(&ns->vars);
351 TAILQ_INSERT_TAIL(&nss, ns, tq);
352 }
353 }
354
355 /* See if this parameter has already been added. */
356 if (ipnum != IP__NULL)
357 dp = j->intparams[ipnum];
358 else
359 TAILQ_FOREACH(dp, &j->params, tq)
360 if (!(dp->flags & PF_CONV) && equalopts(dp->name, name))
361 break;
362 if (dp != NULL) {
363 /* Found it - append or replace. */
364 if (strcmp(dp->name, name)) {
365 free(dp->name);
366 dp->name = estrdup(name);
367 }
368 if (!(flags & PF_APPEND) || TAILQ_EMPTY(&nss))
369 free_param_strings(dp);
370 TAILQ_CONCAT(&dp->val, &nss, tq);
371 dp->flags |= flags;
372 } else {
373 /* Not found - add it. */
374 np = emalloc(sizeof(struct cfparam));
375 np->name = estrdup(name);
376 TAILQ_INIT(&np->val);
377 TAILQ_CONCAT(&np->val, &nss, tq);
378 np->flags = flags;
379 np->gen = 0;
380 TAILQ_INSERT_TAIL(&j->params, np, tq);
381 if (ipnum != IP__NULL)
382 j->intparams[ipnum] = np;
383 else
384 for (ipnum = IP__NULL + 1; ipnum < IP_NPARAM; ipnum++)
385 if (!(intparams[ipnum].flags & PF_CONV) &&
386 equalopts(name, intparams[ipnum].name)) {
387 j->intparams[ipnum] = np;
388 np->flags |= intparams[ipnum].flags;
389 break;
390 }
391 }
392}
393
394/*
395 * Return if a boolean parameter exists and is true.
396 */
397int
398bool_param(const struct cfparam *p)
399{
400 const char *cs;
401
402 if (p == NULL)
403 return 0;
404 cs = strrchr(p->name, '.');
405 return !strncmp(cs ? cs + 1 : p->name, "no", 2) ^
406 (TAILQ_EMPTY(&p->val) ||
407 !strcasecmp(TAILQ_LAST(&p->val, cfstrings)->s, "true") ||
408 (strtol(TAILQ_LAST(&p->val, cfstrings)->s, NULL, 10)));
409}
410
411/*
412 * Set an integer if a parameter if it exists.
413 */
414int
415int_param(const struct cfparam *p, int *ip)
416{
417 if (p == NULL || TAILQ_EMPTY(&p->val))
418 return 0;
419 *ip = strtol(TAILQ_LAST(&p->val, cfstrings)->s, NULL, 10);
420 return 1;
421}
422
423/*
424 * Return the string value of a scalar parameter if it exists.
425 */
426const char *
427string_param(const struct cfparam *p)
428{
429 return (p && !TAILQ_EMPTY(&p->val)
430 ? TAILQ_LAST(&p->val, cfstrings)->s : NULL);
431}
432
433/*
434 * Check syntax and values of internal parameters. Set some internal
435 * parameters based on the values of others.
436 */
437int
438check_intparams(struct cfjail *j)
439{
440 struct cfparam *p;
441 struct cfstring *s;
442 FILE *f;
443 const char *val;
444 char *cs, *ep, *ln;
445 size_t lnlen;
446 int error;
447#if defined(INET) || defined(INET6)
448 struct addrinfo hints;
449 struct addrinfo *ai0, *ai;
450 const char *hostname;
451 int gicode, defif, prefix;
452#endif
453#ifdef INET
454 struct in_addr addr4;
455 int ip4ok;
456 char avalue4[INET_ADDRSTRLEN];
457#endif
458#ifdef INET6
459 struct in6_addr addr6;
460 int ip6ok;
461 char avalue6[INET6_ADDRSTRLEN];
462#endif
463
464 error = 0;
465 /* Check format of boolan and integer values. */
466 TAILQ_FOREACH(p, &j->params, tq) {
467 if (!TAILQ_EMPTY(&p->val) && (p->flags & (PF_BOOL | PF_INT))) {
468 val = TAILQ_LAST(&p->val, cfstrings)->s;
469 if (p->flags & PF_BOOL) {
470 if (strcasecmp(val, "false") &&
471 strcasecmp(val, "true") &&
472 ((void)strtol(val, &ep, 10), *ep)) {
473 jail_warnx(j,
474 "%s: unknown boolean value \"%s\"",
475 p->name, val);
476 error = -1;
477 }
478 } else {
479 (void)strtol(val, &ep, 10);
480 if (ep == val || *ep) {
481 jail_warnx(j,
482 "%s: non-integer value \"%s\"",
483 p->name, val);
484 error = -1;
485 }
486 }
487 }
488 }
489
490#if defined(INET) || defined(INET6)
491 /*
492 * The ip_hostname parameter looks up the hostname, and adds parameters
493 * for any IP addresses it finds.
494 */
495 if (((j->flags & JF_OP_MASK) != JF_STOP ||
496 j->intparams[IP_INTERFACE] != NULL) &&
497 bool_param(j->intparams[IP_IP_HOSTNAME]) &&
498 (hostname = string_param(j->intparams[KP_HOST_HOSTNAME]))) {
499 j->intparams[IP_IP_HOSTNAME] = NULL;
500 /*
501 * Silently ignore unsupported address families from
502 * DNS lookups.
503 */
504#ifdef INET
505 ip4ok = feature_present("inet");
506#endif
507#ifdef INET6
508 ip6ok = feature_present("inet6");
509#endif
510 if (
511#if defined(INET) && defined(INET6)
512 ip4ok || ip6ok
513#elif defined(INET)
514 ip4ok
515#elif defined(INET6)
516 ip6ok
517#endif
518 ) {
519 /* Look up the hostname (or get the address) */
520 memset(&hints, 0, sizeof(hints));
521 hints.ai_socktype = SOCK_STREAM;
522 hints.ai_family =
523#if defined(INET) && defined(INET6)
524 ip4ok ? (ip6ok ? PF_UNSPEC : PF_INET) : PF_INET6;
525#elif defined(INET)
526 PF_INET;
527#elif defined(INET6)
528 PF_INET6;
529#endif
530 gicode = getaddrinfo(hostname, NULL, &hints, &ai0);
531 if (gicode != 0) {
532 jail_warnx(j, "host.hostname %s: %s", hostname,
533 gai_strerror(gicode));
534 error = -1;
535 } else {
536 /*
537 * Convert the addresses to ASCII so jailparam
538 * can convert them back. Errors are not
539 * expected here.
540 */
541 for (ai = ai0; ai; ai = ai->ai_next)
542 switch (ai->ai_family) {
543#ifdef INET
544 case AF_INET:
545 memcpy(&addr4,
546 &((struct sockaddr_in *)
547 (void *)ai->ai_addr)->
548 sin_addr, sizeof(addr4));
549 if (inet_ntop(AF_INET,
550 &addr4, avalue4,
551 INET_ADDRSTRLEN) == NULL)
552 err(1, "inet_ntop");
553 add_param(j, NULL, KP_IP4_ADDR,
554 avalue4);
555 break;
556#endif
557#ifdef INET6
558 case AF_INET6:
559 memcpy(&addr6,
560 &((struct sockaddr_in6 *)
561 (void *)ai->ai_addr)->
562 sin6_addr, sizeof(addr6));
563 if (inet_ntop(AF_INET6,
564 &addr6, avalue6,
565 INET6_ADDRSTRLEN) == NULL)
566 err(1, "inet_ntop");
567 add_param(j, NULL, KP_IP6_ADDR,
568 avalue6);
569 break;
570#endif
571 }
572 freeaddrinfo(ai0);
573 }
574 }
575 }
576
577 /*
578 * IP addresses may include an interface to set that address on,
579 * a netmask/suffix for that address and options for ifconfig.
580 * These are copied to an internal command parameter and then stripped
581 * so they won't be passed on to jailparam_set.
582 */
583 defif = string_param(j->intparams[IP_INTERFACE]) != NULL;
584#ifdef INET
585 if (j->intparams[KP_IP4_ADDR] != NULL) {
586 TAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR]->val, tq) {
587 cs = strchr(s->s, '|');
588 if (cs || defif)
589 add_param(j, NULL, IP__IP4_IFADDR, s->s);
590 if (cs) {
591 strcpy(s->s, cs + 1);
592 s->len -= cs + 1 - s->s;
593 }
594 if ((cs = strchr(s->s, '/'))) {
595 prefix = strtol(cs + 1, &ep, 10);
596 if (*ep == '.'
597 ? inet_pton(AF_INET, cs + 1, &addr4) != 1
598 : *ep || prefix < 0 || prefix > 32) {
599 jail_warnx(j,
600 "ip4.addr: bad netmask \"%s\"", cs);
601 error = -1;
602 }
603 *cs = '\0';
604 s->len = cs - s->s;
605 }
606 if ((cs = strchr(s->s, ' ')) != NULL) {
607 *cs = '\0';
608 s->len = cs - s->s;
609 }
610 }
611 }
612#endif
613#ifdef INET6
614 if (j->intparams[KP_IP6_ADDR] != NULL) {
615 TAILQ_FOREACH(s, &j->intparams[KP_IP6_ADDR]->val, tq) {
616 cs = strchr(s->s, '|');
617 if (cs || defif)
618 add_param(j, NULL, IP__IP6_IFADDR, s->s);
619 if (cs) {
620 strcpy(s->s, cs + 1);
621 s->len -= cs + 1 - s->s;
622 }
623 if ((cs = strchr(s->s, '/'))) {
624 prefix = strtol(cs + 1, &ep, 10);
625 if (*ep || prefix < 0 || prefix > 128) {
626 jail_warnx(j,
627 "ip6.addr: bad prefixlen \"%s\"",
628 cs);
629 error = -1;
630 }
631 *cs = '\0';
632 s->len = cs - s->s;
633 }
634 if ((cs = strchr(s->s, ' ')) != NULL) {
635 *cs = '\0';
636 s->len = cs - s->s;
637 }
638 }
639 }
640#endif
641#endif
642
643 /*
644 * Read mount.fstab file(s), and treat each line as its own mount
645 * parameter.
646 */
647 if (j->intparams[IP_MOUNT_FSTAB] != NULL) {
648 TAILQ_FOREACH(s, &j->intparams[IP_MOUNT_FSTAB]->val, tq) {
649 if (s->len == 0)
650 continue;
651 f = fopen(s->s, "r");
652 if (f == NULL) {
653 jail_warnx(j, "mount.fstab: %s: %s",
654 s->s, strerror(errno));
655 error = -1;
656 continue;
657 }
658 while ((ln = fgetln(f, &lnlen))) {
659 if ((cs = memchr(ln, '#', lnlen - 1)))
660 lnlen = cs - ln + 1;
661 if (ln[lnlen - 1] == '\n' ||
662 ln[lnlen - 1] == '#')
663 ln[lnlen - 1] = '\0';
664 else {
665 cs = alloca(lnlen + 1);
666 strlcpy(cs, ln, lnlen + 1);
667 ln = cs;
668 }
669 add_param(j, NULL, IP__MOUNT_FROM_FSTAB, ln);
670 }
671 fclose(f);
672 }
673 }
674 if (error)
675 failed(j);
676 return error;
677}
678
679/*
680 * Import parameters into libjail's binary jailparam format.
681 */
682int
683import_params(struct cfjail *j)
684{
685 struct cfparam *p;
686 struct cfstring *s, *ts;
687 struct jailparam *jp;
688 char *value, *cs;
689 size_t vallen;
690 int error;
691
692 error = 0;
693 j->njp = 0;
694 TAILQ_FOREACH(p, &j->params, tq)
695 if (!(p->flags & PF_INTERNAL))
696 j->njp++;
697 j->jp = jp = emalloc(j->njp * sizeof(struct jailparam));
698 TAILQ_FOREACH(p, &j->params, tq) {
699 if (p->flags & PF_INTERNAL)
700 continue;
701 if (jailparam_init(jp, p->name) < 0) {
702 error = -1;
703 jail_warnx(j, "%s", jail_errmsg);
704 jp++;
705 continue;
706 }
707 if (TAILQ_EMPTY(&p->val))
708 value = NULL;
709 else if (!jp->jp_elemlen ||
710 !TAILQ_NEXT(TAILQ_FIRST(&p->val), tq)) {
711 /*
712 * Scalar parameters silently discard multiple (array)
713 * values, keeping only the last value added. This
714 * lets values added from the command line append to
715 * arrays wthout pre-checking the type.
716 */
717 value = TAILQ_LAST(&p->val, cfstrings)->s;
718 } else {
719 /*
720 * Convert arrays into comma-separated strings, which
721 * jailparam_import will then convert back into arrays.
722 */
723 vallen = 0;
724 TAILQ_FOREACH(s, &p->val, tq)
725 vallen += s->len + 1;
726 value = alloca(vallen);
727 cs = value;
728 TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
729 memcpy(cs, s->s, s->len);
730 cs += s->len + 1;
731 cs[-1] = ',';
732 }
733 value[vallen - 1] = '\0';
734 }
735 if (jailparam_import(jp, value) < 0) {
736 error = -1;
737 jail_warnx(j, "%s", jail_errmsg);
738 }
739 jp++;
740 }
741 if (error) {
742 jailparam_free(j->jp, j->njp);
743 free(j->jp);
744 j->jp = NULL;
745 failed(j);
746 }
747 return error;
748}
749
750/*
751 * Check if options are equal (with or without the "no" prefix).
752 */
753int
754equalopts(const char *opt1, const char *opt2)
755{
756 char *p;
757
758 /* "opt" vs. "opt" or "noopt" vs. "noopt" */
759 if (strcmp(opt1, opt2) == 0)
760 return (1);
761 /* "noopt" vs. "opt" */
762 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
763 return (1);
764 /* "opt" vs. "noopt" */
765 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
766 return (1);
767 while ((p = strchr(opt1, '.')) != NULL &&
768 !strncmp(opt1, opt2, ++p - opt1)) {
769 opt2 += p - opt1;
770 opt1 = p;
771 /* "foo.noopt" vs. "foo.opt" */
772 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
773 return (1);
774 /* "foo.opt" vs. "foo.noopt" */
775 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
776 return (1);
777 }
778 return (0);
779}
780
781/*
782 * See if a jail name matches a wildcard.
783 */
784int
785wild_jail_match(const char *jname, const char *wname)
786{
787 const char *jc, *jd, *wc, *wd;
788
789 /*
790 * A non-final "*" component in the wild name matches a single jail
791 * component, and a final "*" matches one or more jail components.
792 */
793 for (jc = jname, wc = wname;
794 (jd = strchr(jc, '.')) && (wd = strchr(wc, '.'));
795 jc = jd + 1, wc = wd + 1)
796 if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2))
797 return 0;
798 return (!strcmp(jc, wc) || !strcmp(wc, "*"));
799}
800
801/*
802 * Return if a jail name is a wildcard.
803 */
804int
805wild_jail_name(const char *wname)
806{
807 const char *wc;
808
809 for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*'))
810 if ((wc == wname || wc[-1] == '.') &&
811 (wc[1] == '\0' || wc[1] == '.'))
812 return 1;
813 return 0;
814}
815
816/*
817 * Free a parameter record and all its strings and variables.
818 */
819static void
820free_param(struct cfparams *pp, struct cfparam *p)
821{
822 free(p->name);
823 free_param_strings(p);
824 TAILQ_REMOVE(pp, p, tq);
825 free(p);
826}
827
828static void
829free_param_strings(struct cfparam *p)
830{
831 struct cfstring *s;
832 struct cfvar *v;
833
834 while ((s = TAILQ_FIRST(&p->val))) {
835 free(s->s);
836 while ((v = STAILQ_FIRST(&s->vars))) {
837 free(v->name);
838 STAILQ_REMOVE_HEAD(&s->vars, tq);
839 free(v);
840 }
841 TAILQ_REMOVE(&p->val, s, tq);
842 free(s);
843 }
844}
| 88 [IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL},
89 [IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT},
90 [IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL},
91#ifdef INET
92 [IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV | PF_REV},
93#endif
94#ifdef INET6
95 [IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV | PF_REV},
96#endif
97 [IP__MOUNT_FROM_FSTAB] = {"mount.fstab", PF_INTERNAL | PF_CONV | PF_REV},
98 [IP__OP] = {NULL, PF_CONV},
99 [KP_ALLOW_CHFLAGS] = {"allow.chflags", 0},
100 [KP_ALLOW_MOUNT] = {"allow.mount", 0},
101 [KP_ALLOW_RAW_SOCKETS] = {"allow.raw_sockets", 0},
102 [KP_ALLOW_SET_HOSTNAME]= {"allow.set_hostname", 0},
103 [KP_ALLOW_SOCKET_AF] = {"allow.socket_af", 0},
104 [KP_ALLOW_SYSVIPC] = {"allow.sysvipc", 0},
105 [KP_DEVFS_RULESET] = {"devfs_ruleset", 0},
106 [KP_ENFORCE_STATFS] = {"enforce_statfs", 0},
107 [KP_HOST_HOSTNAME] = {"host.hostname", 0},
108#ifdef INET
109 [KP_IP4_ADDR] = {"ip4.addr", 0},
110#endif
111#ifdef INET6
112 [KP_IP6_ADDR] = {"ip6.addr", 0},
113#endif
114 [KP_JID] = {"jid", 0},
115 [KP_NAME] = {"name", 0},
116 [KP_PATH] = {"path", 0},
117 [KP_PERSIST] = {"persist", 0},
118 [KP_SECURELEVEL] = {"securelevel", 0},
119 [KP_VNET] = {"vnet", 0},
120};
121
122/*
123 * Parse the jail configuration file.
124 */
125void
126load_config(void)
127{
128 struct cfjails wild;
129 struct cfparams opp;
130 struct cfjail *j, *tj, *wj;
131 struct cfparam *p, *vp, *tp;
132 struct cfstring *s, *vs, *ns;
133 struct cfvar *v;
134 char *ep;
135 size_t varoff;
136 int did_self, jseq, pgen;
137
138 if (!strcmp(cfname, "-")) {
139 cfname = "STDIN";
140 yyin = stdin;
141 } else {
142 yyin = fopen(cfname, "r");
143 if (!yyin)
144 err(1, "%s", cfname);
145 }
146 if (yyparse() || yynerrs)
147 exit(1);
148
149 /* Separate the wildcard jails out from the actual jails. */
150 jseq = 0;
151 TAILQ_INIT(&wild);
152 TAILQ_FOREACH_SAFE(j, &cfjails, tq, tj) {
153 j->seq = ++jseq;
154 if (wild_jail_name(j->name))
155 requeue(j, &wild);
156 }
157
158 TAILQ_FOREACH(j, &cfjails, tq) {
159 /* Set aside the jail's parameters. */
160 TAILQ_INIT(&opp);
161 TAILQ_CONCAT(&opp, &j->params, tq);
162 /*
163 * The jail name implies its "name" or "jid" parameter,
164 * though they may also be explicitly set later on.
165 */
166 add_param(j, NULL,
167 strtol(j->name, &ep, 10) && !*ep ? KP_JID : KP_NAME,
168 j->name);
169 /*
170 * Collect parameters for the jail, global parameters/variables,
171 * and any matching wildcard jails.
172 */
173 did_self = 0;
174 TAILQ_FOREACH(wj, &wild, tq) {
175 if (j->seq < wj->seq && !did_self) {
176 TAILQ_FOREACH(p, &opp, tq)
177 add_param(j, p, 0, NULL);
178 did_self = 1;
179 }
180 if (wild_jail_match(j->name, wj->name))
181 TAILQ_FOREACH(p, &wj->params, tq)
182 add_param(j, p, 0, NULL);
183 }
184 if (!did_self)
185 TAILQ_FOREACH(p, &opp, tq)
186 add_param(j, p, 0, NULL);
187
188 /* Resolve any variable substitutions. */
189 pgen = 0;
190 TAILQ_FOREACH(p, &j->params, tq) {
191 p->gen = ++pgen;
192 find_vars:
193 TAILQ_FOREACH(s, &p->val, tq) {
194 varoff = 0;
195 while ((v = STAILQ_FIRST(&s->vars))) {
196 TAILQ_FOREACH(vp, &j->params, tq)
197 if (!strcmp(vp->name, v->name))
198 break;
199 if (!vp) {
200 jail_warnx(j,
201 "%s: variable \"%s\" not found",
202 p->name, v->name);
203 bad_var:
204 j->flags |= JF_FAILED;
205 TAILQ_FOREACH(vp, &j->params, tq)
206 if (vp->gen == pgen)
207 vp->flags |= PF_BAD;
208 goto free_var;
209 }
210 if (vp->flags & PF_BAD)
211 goto bad_var;
212 if (vp->gen == pgen) {
213 jail_warnx(j, "%s: variable loop",
214 v->name);
215 goto bad_var;
216 }
217 TAILQ_FOREACH(vs, &vp->val, tq)
218 if (!STAILQ_EMPTY(&vs->vars)) {
219 vp->gen = pgen;
220 TAILQ_REMOVE(&j->params, vp,
221 tq);
222 TAILQ_INSERT_BEFORE(p, vp, tq);
223 p = vp;
224 goto find_vars;
225 }
226 vs = TAILQ_FIRST(&vp->val);
227 if (TAILQ_NEXT(vs, tq) != NULL &&
228 (s->s[0] != '\0' ||
229 STAILQ_NEXT(v, tq))) {
230 jail_warnx(j, "%s: array cannot be "
231 "substituted inline",
232 p->name);
233 goto bad_var;
234 }
235 s->s = erealloc(s->s, s->len + vs->len + 1);
236 memmove(s->s + v->pos + varoff + vs->len,
237 s->s + v->pos + varoff,
238 s->len - (v->pos + varoff) + 1);
239 memcpy(s->s + v->pos + varoff, vs->s, vs->len);
240 varoff += vs->len;
241 s->len += vs->len;
242 while ((vs = TAILQ_NEXT(vs, tq))) {
243 ns = emalloc(sizeof(struct cfstring));
244 ns->s = estrdup(vs->s);
245 ns->len = vs->len;
246 STAILQ_INIT(&ns->vars);
247 TAILQ_INSERT_AFTER(&p->val, s, ns, tq);
248 s = ns;
249 }
250 free_var:
251 free(v->name);
252 STAILQ_REMOVE_HEAD(&s->vars, tq);
253 free(v);
254 }
255 }
256 }
257
258 /* Free the jail's original parameter list and any variables. */
259 while ((p = TAILQ_FIRST(&opp)))
260 free_param(&opp, p);
261 TAILQ_FOREACH_SAFE(p, &j->params, tq, tp)
262 if (p->flags & PF_VAR)
263 free_param(&j->params, p);
264 }
265 while ((wj = TAILQ_FIRST(&wild))) {
266 free(wj->name);
267 while ((p = TAILQ_FIRST(&wj->params)))
268 free_param(&wj->params, p);
269 TAILQ_REMOVE(&wild, wj, tq);
270 }
271}
272
273/*
274 * Create a new jail record.
275 */
276struct cfjail *
277add_jail(void)
278{
279 struct cfjail *j;
280
281 j = emalloc(sizeof(struct cfjail));
282 memset(j, 0, sizeof(struct cfjail));
283 TAILQ_INIT(&j->params);
284 STAILQ_INIT(&j->dep[DEP_FROM]);
285 STAILQ_INIT(&j->dep[DEP_TO]);
286 j->queue = &cfjails;
287 TAILQ_INSERT_TAIL(&cfjails, j, tq);
288 return j;
289}
290
291/*
292 * Add a parameter to a jail.
293 */
294void
295add_param(struct cfjail *j, const struct cfparam *p, enum intparam ipnum,
296 const char *value)
297{
298 struct cfstrings nss;
299 struct cfparam *dp, *np;
300 struct cfstring *s, *ns;
301 struct cfvar *v, *nv;
302 const char *name;
303 char *cs, *tname;
304 unsigned flags;
305
306 if (j == NULL) {
307 /* Create a single anonymous jail if one doesn't yet exist. */
308 j = TAILQ_LAST(&cfjails, cfjails);
309 if (j == NULL)
310 j = add_jail();
311 }
312 TAILQ_INIT(&nss);
313 if (p != NULL) {
314 name = p->name;
315 flags = p->flags;
316 /*
317 * Make a copy of the parameter's string list,
318 * which may be freed if it's overridden later.
319 */
320 TAILQ_FOREACH(s, &p->val, tq) {
321 ns = emalloc(sizeof(struct cfstring));
322 ns->s = estrdup(s->s);
323 ns->len = s->len;
324 STAILQ_INIT(&ns->vars);
325 STAILQ_FOREACH(v, &s->vars, tq) {
326 nv = emalloc(sizeof(struct cfvar));
327 nv->name = strdup(v->name);
328 nv->pos = v->pos;
329 STAILQ_INSERT_TAIL(&ns->vars, nv, tq);
330 }
331 TAILQ_INSERT_TAIL(&nss, ns, tq);
332 }
333 } else {
334 flags = PF_APPEND;
335 if (ipnum != IP__NULL) {
336 name = intparams[ipnum].name;
337 flags |= intparams[ipnum].flags;
338 } else if ((cs = strchr(value, '='))) {
339 tname = alloca(cs - value + 1);
340 strlcpy(tname, value, cs - value + 1);
341 name = tname;
342 value = cs + 1;
343 } else {
344 name = value;
345 value = NULL;
346 }
347 if (value != NULL) {
348 ns = emalloc(sizeof(struct cfstring));
349 ns->s = estrdup(value);
350 ns->len = strlen(value);
351 STAILQ_INIT(&ns->vars);
352 TAILQ_INSERT_TAIL(&nss, ns, tq);
353 }
354 }
355
356 /* See if this parameter has already been added. */
357 if (ipnum != IP__NULL)
358 dp = j->intparams[ipnum];
359 else
360 TAILQ_FOREACH(dp, &j->params, tq)
361 if (!(dp->flags & PF_CONV) && equalopts(dp->name, name))
362 break;
363 if (dp != NULL) {
364 /* Found it - append or replace. */
365 if (strcmp(dp->name, name)) {
366 free(dp->name);
367 dp->name = estrdup(name);
368 }
369 if (!(flags & PF_APPEND) || TAILQ_EMPTY(&nss))
370 free_param_strings(dp);
371 TAILQ_CONCAT(&dp->val, &nss, tq);
372 dp->flags |= flags;
373 } else {
374 /* Not found - add it. */
375 np = emalloc(sizeof(struct cfparam));
376 np->name = estrdup(name);
377 TAILQ_INIT(&np->val);
378 TAILQ_CONCAT(&np->val, &nss, tq);
379 np->flags = flags;
380 np->gen = 0;
381 TAILQ_INSERT_TAIL(&j->params, np, tq);
382 if (ipnum != IP__NULL)
383 j->intparams[ipnum] = np;
384 else
385 for (ipnum = IP__NULL + 1; ipnum < IP_NPARAM; ipnum++)
386 if (!(intparams[ipnum].flags & PF_CONV) &&
387 equalopts(name, intparams[ipnum].name)) {
388 j->intparams[ipnum] = np;
389 np->flags |= intparams[ipnum].flags;
390 break;
391 }
392 }
393}
394
395/*
396 * Return if a boolean parameter exists and is true.
397 */
398int
399bool_param(const struct cfparam *p)
400{
401 const char *cs;
402
403 if (p == NULL)
404 return 0;
405 cs = strrchr(p->name, '.');
406 return !strncmp(cs ? cs + 1 : p->name, "no", 2) ^
407 (TAILQ_EMPTY(&p->val) ||
408 !strcasecmp(TAILQ_LAST(&p->val, cfstrings)->s, "true") ||
409 (strtol(TAILQ_LAST(&p->val, cfstrings)->s, NULL, 10)));
410}
411
412/*
413 * Set an integer if a parameter if it exists.
414 */
415int
416int_param(const struct cfparam *p, int *ip)
417{
418 if (p == NULL || TAILQ_EMPTY(&p->val))
419 return 0;
420 *ip = strtol(TAILQ_LAST(&p->val, cfstrings)->s, NULL, 10);
421 return 1;
422}
423
424/*
425 * Return the string value of a scalar parameter if it exists.
426 */
427const char *
428string_param(const struct cfparam *p)
429{
430 return (p && !TAILQ_EMPTY(&p->val)
431 ? TAILQ_LAST(&p->val, cfstrings)->s : NULL);
432}
433
434/*
435 * Check syntax and values of internal parameters. Set some internal
436 * parameters based on the values of others.
437 */
438int
439check_intparams(struct cfjail *j)
440{
441 struct cfparam *p;
442 struct cfstring *s;
443 FILE *f;
444 const char *val;
445 char *cs, *ep, *ln;
446 size_t lnlen;
447 int error;
448#if defined(INET) || defined(INET6)
449 struct addrinfo hints;
450 struct addrinfo *ai0, *ai;
451 const char *hostname;
452 int gicode, defif, prefix;
453#endif
454#ifdef INET
455 struct in_addr addr4;
456 int ip4ok;
457 char avalue4[INET_ADDRSTRLEN];
458#endif
459#ifdef INET6
460 struct in6_addr addr6;
461 int ip6ok;
462 char avalue6[INET6_ADDRSTRLEN];
463#endif
464
465 error = 0;
466 /* Check format of boolan and integer values. */
467 TAILQ_FOREACH(p, &j->params, tq) {
468 if (!TAILQ_EMPTY(&p->val) && (p->flags & (PF_BOOL | PF_INT))) {
469 val = TAILQ_LAST(&p->val, cfstrings)->s;
470 if (p->flags & PF_BOOL) {
471 if (strcasecmp(val, "false") &&
472 strcasecmp(val, "true") &&
473 ((void)strtol(val, &ep, 10), *ep)) {
474 jail_warnx(j,
475 "%s: unknown boolean value \"%s\"",
476 p->name, val);
477 error = -1;
478 }
479 } else {
480 (void)strtol(val, &ep, 10);
481 if (ep == val || *ep) {
482 jail_warnx(j,
483 "%s: non-integer value \"%s\"",
484 p->name, val);
485 error = -1;
486 }
487 }
488 }
489 }
490
491#if defined(INET) || defined(INET6)
492 /*
493 * The ip_hostname parameter looks up the hostname, and adds parameters
494 * for any IP addresses it finds.
495 */
496 if (((j->flags & JF_OP_MASK) != JF_STOP ||
497 j->intparams[IP_INTERFACE] != NULL) &&
498 bool_param(j->intparams[IP_IP_HOSTNAME]) &&
499 (hostname = string_param(j->intparams[KP_HOST_HOSTNAME]))) {
500 j->intparams[IP_IP_HOSTNAME] = NULL;
501 /*
502 * Silently ignore unsupported address families from
503 * DNS lookups.
504 */
505#ifdef INET
506 ip4ok = feature_present("inet");
507#endif
508#ifdef INET6
509 ip6ok = feature_present("inet6");
510#endif
511 if (
512#if defined(INET) && defined(INET6)
513 ip4ok || ip6ok
514#elif defined(INET)
515 ip4ok
516#elif defined(INET6)
517 ip6ok
518#endif
519 ) {
520 /* Look up the hostname (or get the address) */
521 memset(&hints, 0, sizeof(hints));
522 hints.ai_socktype = SOCK_STREAM;
523 hints.ai_family =
524#if defined(INET) && defined(INET6)
525 ip4ok ? (ip6ok ? PF_UNSPEC : PF_INET) : PF_INET6;
526#elif defined(INET)
527 PF_INET;
528#elif defined(INET6)
529 PF_INET6;
530#endif
531 gicode = getaddrinfo(hostname, NULL, &hints, &ai0);
532 if (gicode != 0) {
533 jail_warnx(j, "host.hostname %s: %s", hostname,
534 gai_strerror(gicode));
535 error = -1;
536 } else {
537 /*
538 * Convert the addresses to ASCII so jailparam
539 * can convert them back. Errors are not
540 * expected here.
541 */
542 for (ai = ai0; ai; ai = ai->ai_next)
543 switch (ai->ai_family) {
544#ifdef INET
545 case AF_INET:
546 memcpy(&addr4,
547 &((struct sockaddr_in *)
548 (void *)ai->ai_addr)->
549 sin_addr, sizeof(addr4));
550 if (inet_ntop(AF_INET,
551 &addr4, avalue4,
552 INET_ADDRSTRLEN) == NULL)
553 err(1, "inet_ntop");
554 add_param(j, NULL, KP_IP4_ADDR,
555 avalue4);
556 break;
557#endif
558#ifdef INET6
559 case AF_INET6:
560 memcpy(&addr6,
561 &((struct sockaddr_in6 *)
562 (void *)ai->ai_addr)->
563 sin6_addr, sizeof(addr6));
564 if (inet_ntop(AF_INET6,
565 &addr6, avalue6,
566 INET6_ADDRSTRLEN) == NULL)
567 err(1, "inet_ntop");
568 add_param(j, NULL, KP_IP6_ADDR,
569 avalue6);
570 break;
571#endif
572 }
573 freeaddrinfo(ai0);
574 }
575 }
576 }
577
578 /*
579 * IP addresses may include an interface to set that address on,
580 * a netmask/suffix for that address and options for ifconfig.
581 * These are copied to an internal command parameter and then stripped
582 * so they won't be passed on to jailparam_set.
583 */
584 defif = string_param(j->intparams[IP_INTERFACE]) != NULL;
585#ifdef INET
586 if (j->intparams[KP_IP4_ADDR] != NULL) {
587 TAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR]->val, tq) {
588 cs = strchr(s->s, '|');
589 if (cs || defif)
590 add_param(j, NULL, IP__IP4_IFADDR, s->s);
591 if (cs) {
592 strcpy(s->s, cs + 1);
593 s->len -= cs + 1 - s->s;
594 }
595 if ((cs = strchr(s->s, '/'))) {
596 prefix = strtol(cs + 1, &ep, 10);
597 if (*ep == '.'
598 ? inet_pton(AF_INET, cs + 1, &addr4) != 1
599 : *ep || prefix < 0 || prefix > 32) {
600 jail_warnx(j,
601 "ip4.addr: bad netmask \"%s\"", cs);
602 error = -1;
603 }
604 *cs = '\0';
605 s->len = cs - s->s;
606 }
607 if ((cs = strchr(s->s, ' ')) != NULL) {
608 *cs = '\0';
609 s->len = cs - s->s;
610 }
611 }
612 }
613#endif
614#ifdef INET6
615 if (j->intparams[KP_IP6_ADDR] != NULL) {
616 TAILQ_FOREACH(s, &j->intparams[KP_IP6_ADDR]->val, tq) {
617 cs = strchr(s->s, '|');
618 if (cs || defif)
619 add_param(j, NULL, IP__IP6_IFADDR, s->s);
620 if (cs) {
621 strcpy(s->s, cs + 1);
622 s->len -= cs + 1 - s->s;
623 }
624 if ((cs = strchr(s->s, '/'))) {
625 prefix = strtol(cs + 1, &ep, 10);
626 if (*ep || prefix < 0 || prefix > 128) {
627 jail_warnx(j,
628 "ip6.addr: bad prefixlen \"%s\"",
629 cs);
630 error = -1;
631 }
632 *cs = '\0';
633 s->len = cs - s->s;
634 }
635 if ((cs = strchr(s->s, ' ')) != NULL) {
636 *cs = '\0';
637 s->len = cs - s->s;
638 }
639 }
640 }
641#endif
642#endif
643
644 /*
645 * Read mount.fstab file(s), and treat each line as its own mount
646 * parameter.
647 */
648 if (j->intparams[IP_MOUNT_FSTAB] != NULL) {
649 TAILQ_FOREACH(s, &j->intparams[IP_MOUNT_FSTAB]->val, tq) {
650 if (s->len == 0)
651 continue;
652 f = fopen(s->s, "r");
653 if (f == NULL) {
654 jail_warnx(j, "mount.fstab: %s: %s",
655 s->s, strerror(errno));
656 error = -1;
657 continue;
658 }
659 while ((ln = fgetln(f, &lnlen))) {
660 if ((cs = memchr(ln, '#', lnlen - 1)))
661 lnlen = cs - ln + 1;
662 if (ln[lnlen - 1] == '\n' ||
663 ln[lnlen - 1] == '#')
664 ln[lnlen - 1] = '\0';
665 else {
666 cs = alloca(lnlen + 1);
667 strlcpy(cs, ln, lnlen + 1);
668 ln = cs;
669 }
670 add_param(j, NULL, IP__MOUNT_FROM_FSTAB, ln);
671 }
672 fclose(f);
673 }
674 }
675 if (error)
676 failed(j);
677 return error;
678}
679
680/*
681 * Import parameters into libjail's binary jailparam format.
682 */
683int
684import_params(struct cfjail *j)
685{
686 struct cfparam *p;
687 struct cfstring *s, *ts;
688 struct jailparam *jp;
689 char *value, *cs;
690 size_t vallen;
691 int error;
692
693 error = 0;
694 j->njp = 0;
695 TAILQ_FOREACH(p, &j->params, tq)
696 if (!(p->flags & PF_INTERNAL))
697 j->njp++;
698 j->jp = jp = emalloc(j->njp * sizeof(struct jailparam));
699 TAILQ_FOREACH(p, &j->params, tq) {
700 if (p->flags & PF_INTERNAL)
701 continue;
702 if (jailparam_init(jp, p->name) < 0) {
703 error = -1;
704 jail_warnx(j, "%s", jail_errmsg);
705 jp++;
706 continue;
707 }
708 if (TAILQ_EMPTY(&p->val))
709 value = NULL;
710 else if (!jp->jp_elemlen ||
711 !TAILQ_NEXT(TAILQ_FIRST(&p->val), tq)) {
712 /*
713 * Scalar parameters silently discard multiple (array)
714 * values, keeping only the last value added. This
715 * lets values added from the command line append to
716 * arrays wthout pre-checking the type.
717 */
718 value = TAILQ_LAST(&p->val, cfstrings)->s;
719 } else {
720 /*
721 * Convert arrays into comma-separated strings, which
722 * jailparam_import will then convert back into arrays.
723 */
724 vallen = 0;
725 TAILQ_FOREACH(s, &p->val, tq)
726 vallen += s->len + 1;
727 value = alloca(vallen);
728 cs = value;
729 TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
730 memcpy(cs, s->s, s->len);
731 cs += s->len + 1;
732 cs[-1] = ',';
733 }
734 value[vallen - 1] = '\0';
735 }
736 if (jailparam_import(jp, value) < 0) {
737 error = -1;
738 jail_warnx(j, "%s", jail_errmsg);
739 }
740 jp++;
741 }
742 if (error) {
743 jailparam_free(j->jp, j->njp);
744 free(j->jp);
745 j->jp = NULL;
746 failed(j);
747 }
748 return error;
749}
750
751/*
752 * Check if options are equal (with or without the "no" prefix).
753 */
754int
755equalopts(const char *opt1, const char *opt2)
756{
757 char *p;
758
759 /* "opt" vs. "opt" or "noopt" vs. "noopt" */
760 if (strcmp(opt1, opt2) == 0)
761 return (1);
762 /* "noopt" vs. "opt" */
763 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
764 return (1);
765 /* "opt" vs. "noopt" */
766 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
767 return (1);
768 while ((p = strchr(opt1, '.')) != NULL &&
769 !strncmp(opt1, opt2, ++p - opt1)) {
770 opt2 += p - opt1;
771 opt1 = p;
772 /* "foo.noopt" vs. "foo.opt" */
773 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
774 return (1);
775 /* "foo.opt" vs. "foo.noopt" */
776 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
777 return (1);
778 }
779 return (0);
780}
781
782/*
783 * See if a jail name matches a wildcard.
784 */
785int
786wild_jail_match(const char *jname, const char *wname)
787{
788 const char *jc, *jd, *wc, *wd;
789
790 /*
791 * A non-final "*" component in the wild name matches a single jail
792 * component, and a final "*" matches one or more jail components.
793 */
794 for (jc = jname, wc = wname;
795 (jd = strchr(jc, '.')) && (wd = strchr(wc, '.'));
796 jc = jd + 1, wc = wd + 1)
797 if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2))
798 return 0;
799 return (!strcmp(jc, wc) || !strcmp(wc, "*"));
800}
801
802/*
803 * Return if a jail name is a wildcard.
804 */
805int
806wild_jail_name(const char *wname)
807{
808 const char *wc;
809
810 for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*'))
811 if ((wc == wname || wc[-1] == '.') &&
812 (wc[1] == '\0' || wc[1] == '.'))
813 return 1;
814 return 0;
815}
816
817/*
818 * Free a parameter record and all its strings and variables.
819 */
820static void
821free_param(struct cfparams *pp, struct cfparam *p)
822{
823 free(p->name);
824 free_param_strings(p);
825 TAILQ_REMOVE(pp, p, tq);
826 free(p);
827}
828
829static void
830free_param_strings(struct cfparam *p)
831{
832 struct cfstring *s;
833 struct cfvar *v;
834
835 while ((s = TAILQ_FIRST(&p->val))) {
836 free(s->s);
837 while ((v = STAILQ_FIRST(&s->vars))) {
838 free(v->name);
839 STAILQ_REMOVE_HEAD(&s->vars, tq);
840 free(v);
841 }
842 TAILQ_REMOVE(&p->val, s, tq);
843 free(s);
844 }
845}
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