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