86 [IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL},
87 [IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT},
88 [IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL},
89#ifdef INET
90 [IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV | PF_REV},
91#endif
92#ifdef INET6
93 [IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV | PF_REV},
94#endif
95 [IP__MOUNT_FROM_FSTAB] = {"mount.fstab", PF_INTERNAL | PF_CONV | PF_REV},
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}
| 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 * and a netmask/suffix for that address.
580 */
581 defif = string_param(j->intparams[IP_INTERFACE]) != NULL;
582#ifdef INET
583 if (j->intparams[KP_IP4_ADDR] != NULL) {
584 TAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR]->val, tq) {
585 cs = strchr(s->s, '|');
586 if (cs || defif)
587 add_param(j, NULL, IP__IP4_IFADDR, s->s);
588 if (cs) {
589 strcpy(s->s, cs + 1);
590 s->len -= cs + 1 - s->s;
591 }
592 if ((cs = strchr(s->s, '/'))) {
593 prefix = strtol(cs + 1, &ep, 10);
594 if (*ep == '.'
595 ? inet_pton(AF_INET, cs + 1, &addr4) != 1
596 : *ep || prefix < 0 || prefix > 32) {
597 jail_warnx(j,
598 "ip4.addr: bad netmask \"%s\"", cs);
599 error = -1;
600 }
601 *cs = '\0';
602 s->len = cs - s->s;
603 }
604 }
605 }
606#endif
607#ifdef INET6
608 if (j->intparams[KP_IP6_ADDR] != NULL) {
609 TAILQ_FOREACH(s, &j->intparams[KP_IP6_ADDR]->val, tq) {
610 cs = strchr(s->s, '|');
611 if (cs || defif)
612 add_param(j, NULL, IP__IP6_IFADDR, s->s);
613 if (cs) {
614 strcpy(s->s, cs + 1);
615 s->len -= cs + 1 - s->s;
616 }
617 if ((cs = strchr(s->s, '/'))) {
618 prefix = strtol(cs + 1, &ep, 10);
619 if (*ep || prefix < 0 || prefix > 128) {
620 jail_warnx(j,
621 "ip6.addr: bad prefixlen \"%s\"",
622 cs);
623 error = -1;
624 }
625 *cs = '\0';
626 s->len = cs - s->s;
627 }
628 }
629 }
630#endif
631#endif
632
633 /*
634 * Read mount.fstab file(s), and treat each line as its own mount
635 * parameter.
636 */
637 if (j->intparams[IP_MOUNT_FSTAB] != NULL) {
638 TAILQ_FOREACH(s, &j->intparams[IP_MOUNT_FSTAB]->val, tq) {
639 if (s->len == 0)
640 continue;
641 f = fopen(s->s, "r");
642 if (f == NULL) {
643 jail_warnx(j, "mount.fstab: %s: %s",
644 s->s, strerror(errno));
645 error = -1;
646 continue;
647 }
648 while ((ln = fgetln(f, &lnlen))) {
649 if ((cs = memchr(ln, '#', lnlen - 1)))
650 lnlen = cs - ln + 1;
651 if (ln[lnlen - 1] == '\n' ||
652 ln[lnlen - 1] == '#')
653 ln[lnlen - 1] = '\0';
654 else {
655 cs = alloca(lnlen + 1);
656 strlcpy(cs, ln, lnlen + 1);
657 ln = cs;
658 }
659 add_param(j, NULL, IP__MOUNT_FROM_FSTAB, ln);
660 }
661 fclose(f);
662 }
663 }
664 if (error)
665 failed(j);
666 return error;
667}
668
669/*
670 * Import parameters into libjail's binary jailparam format.
671 */
672int
673import_params(struct cfjail *j)
674{
675 struct cfparam *p;
676 struct cfstring *s, *ts;
677 struct jailparam *jp;
678 char *value, *cs;
679 size_t vallen;
680 int error;
681
682 error = 0;
683 j->njp = 0;
684 TAILQ_FOREACH(p, &j->params, tq)
685 if (!(p->flags & PF_INTERNAL))
686 j->njp++;
687 j->jp = jp = emalloc(j->njp * sizeof(struct jailparam));
688 TAILQ_FOREACH(p, &j->params, tq) {
689 if (p->flags & PF_INTERNAL)
690 continue;
691 if (jailparam_init(jp, p->name) < 0) {
692 error = -1;
693 jail_warnx(j, "%s", jail_errmsg);
694 jp++;
695 continue;
696 }
697 if (TAILQ_EMPTY(&p->val))
698 value = NULL;
699 else if (!jp->jp_elemlen ||
700 !TAILQ_NEXT(TAILQ_FIRST(&p->val), tq)) {
701 /*
702 * Scalar parameters silently discard multiple (array)
703 * values, keeping only the last value added. This
704 * lets values added from the command line append to
705 * arrays wthout pre-checking the type.
706 */
707 value = TAILQ_LAST(&p->val, cfstrings)->s;
708 } else {
709 /*
710 * Convert arrays into comma-separated strings, which
711 * jailparam_import will then convert back into arrays.
712 */
713 vallen = 0;
714 TAILQ_FOREACH(s, &p->val, tq)
715 vallen += s->len + 1;
716 value = alloca(vallen);
717 cs = value;
718 TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
719 memcpy(cs, s->s, s->len);
720 cs += s->len + 1;
721 cs[-1] = ',';
722 }
723 value[vallen - 1] = '\0';
724 }
725 if (jailparam_import(jp, value) < 0) {
726 error = -1;
727 jail_warnx(j, "%s", jail_errmsg);
728 }
729 jp++;
730 }
731 if (error) {
732 jailparam_free(j->jp, j->njp);
733 free(j->jp);
734 j->jp = NULL;
735 failed(j);
736 }
737 return error;
738}
739
740/*
741 * Check if options are equal (with or without the "no" prefix).
742 */
743int
744equalopts(const char *opt1, const char *opt2)
745{
746 char *p;
747
748 /* "opt" vs. "opt" or "noopt" vs. "noopt" */
749 if (strcmp(opt1, opt2) == 0)
750 return (1);
751 /* "noopt" vs. "opt" */
752 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
753 return (1);
754 /* "opt" vs. "noopt" */
755 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
756 return (1);
757 while ((p = strchr(opt1, '.')) != NULL &&
758 !strncmp(opt1, opt2, ++p - opt1)) {
759 opt2 += p - opt1;
760 opt1 = p;
761 /* "foo.noopt" vs. "foo.opt" */
762 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
763 return (1);
764 /* "foo.opt" vs. "foo.noopt" */
765 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
766 return (1);
767 }
768 return (0);
769}
770
771/*
772 * See if a jail name matches a wildcard.
773 */
774int
775wild_jail_match(const char *jname, const char *wname)
776{
777 const char *jc, *jd, *wc, *wd;
778
779 /*
780 * A non-final "*" component in the wild name matches a single jail
781 * component, and a final "*" matches one or more jail components.
782 */
783 for (jc = jname, wc = wname;
784 (jd = strchr(jc, '.')) && (wd = strchr(wc, '.'));
785 jc = jd + 1, wc = wd + 1)
786 if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2))
787 return 0;
788 return (!strcmp(jc, wc) || !strcmp(wc, "*"));
789}
790
791/*
792 * Return if a jail name is a wildcard.
793 */
794int
795wild_jail_name(const char *wname)
796{
797 const char *wc;
798
799 for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*'))
800 if ((wc == wname || wc[-1] == '.') &&
801 (wc[1] == '\0' || wc[1] == '.'))
802 return 1;
803 return 0;
804}
805
806/*
807 * Free a parameter record and all its strings and variables.
808 */
809static void
810free_param(struct cfparams *pp, struct cfparam *p)
811{
812 free(p->name);
813 free_param_strings(p);
814 TAILQ_REMOVE(pp, p, tq);
815 free(p);
816}
817
818static void
819free_param_strings(struct cfparam *p)
820{
821 struct cfstring *s;
822 struct cfvar *v;
823
824 while ((s = TAILQ_FIRST(&p->val))) {
825 free(s->s);
826 while ((v = STAILQ_FIRST(&s->vars))) {
827 free(v->name);
828 STAILQ_REMOVE_HEAD(&s->vars, tq);
829 free(v);
830 }
831 TAILQ_REMOVE(&p->val, s, tq);
832 free(s);
833 }
834}
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