config.c revision 214649
1/*- 2 * Copyright (c) 2010 James Gritton 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: projects/jailconf/usr.sbin/jail/config.c 214649 2010-11-01 21:37:28Z jamie $"); 29 30#include <sys/types.h> 31#include <sys/socket.h> 32#include <sys/sysctl.h> 33 34#include <arpa/inet.h> 35#include <netinet/in.h> 36 37#include <err.h> 38#include <netdb.h> 39#include <stdio.h> 40#include <stdlib.h> 41#include <string.h> 42 43#include "jailp.h" 44 45struct ipspec { 46 const char *name; 47 unsigned flags; 48}; 49 50extern FILE *yyin; 51extern int yynerrs; 52 53struct cfjails cfjails = TAILQ_HEAD_INITIALIZER(cfjails); 54 55static void free_param(struct cfparams *pp, struct cfparam *p); 56static void free_param_strings(struct cfparam *p); 57 58static const struct ipspec intparams[] = { 59 [IP_ALLOW_DYING] = {"allow.dying", PF_INTERNAL | PF_BOOL}, 60 [IP_COMMAND] = {"command", PF_INTERNAL}, 61 [IP_DEPEND] = {"depend", PF_INTERNAL}, 62 [IP_EXEC_CLEAN] = {"exec.clean", PF_INTERNAL | PF_BOOL}, 63 [IP_EXEC_CONSOLELOG] = {"exec.consolelog", PF_INTERNAL}, 64 [IP_EXEC_FIB] = {"exec.fib", PF_INTERNAL | PF_INT}, 65 [IP_EXEC_JAIL_USER] = {"exec.jail_user", PF_INTERNAL}, 66 [IP_EXEC_POSTSTART] = {"exec.poststart", PF_INTERNAL}, 67 [IP_EXEC_POSTSTOP] = {"exec.poststop", PF_INTERNAL}, 68 [IP_EXEC_PRESTART] = {"exec.prestart", PF_INTERNAL}, 69 [IP_EXEC_PRESTOP] = {"exec.prestop", PF_INTERNAL}, 70 [IP_EXEC_START] = {"exec.start", PF_INTERNAL}, 71 [IP_EXEC_STOP] = {"exec.stop", PF_INTERNAL}, 72 [IP_EXEC_SYSTEM_JAIL_USER]= {"exec.system_jail_user", 73 PF_INTERNAL | PF_BOOL}, 74 [IP_EXEC_SYSTEM_USER] = {"exec.system_user", PF_INTERNAL}, 75 [IP_EXEC_TIMEOUT] = {"exec.timeout", PF_INTERNAL | PF_INT}, 76 [IP_INTERFACE] = {"interface", PF_INTERNAL}, 77 [IP_IP_HOSTNAME] = {"ip_hostname", PF_INTERNAL | PF_BOOL}, 78 [IP_MOUNT] = {"mount", PF_INTERNAL}, 79 [IP_MOUNT_DEVFS] = {"mount.devfs", PF_INTERNAL | PF_BOOL}, 80 [IP_MOUNT_DEVFS_RULESET]= {"mount.devfs.ruleset", PF_INTERNAL}, 81 [IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL}, 82 [IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT}, 83 [IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL}, 84 [IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV}, 85#ifdef INET6 86 [IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV}, 87#endif 88 [KP_ALLOW_CHFLAGS] = {"allow.chflags", 0}, 89 [KP_ALLOW_MOUNT] = {"allow.mount", 0}, 90 [KP_ALLOW_RAW_SOCKETS] = {"allow.raw_sockets", 0}, 91 [KP_ALLOW_SET_HOSTNAME]= {"allow.set_hostname", 0}, 92 [KP_ALLOW_SOCKET_AF] = {"allow.socket_af", 0}, 93 [KP_ALLOW_SYSVIPC] = {"allow.sysvipc", 0}, 94 [KP_ENFORCE_STATFS] = {"enforce_statfs", 0}, 95 [KP_HOST_HOSTNAME] = {"host.hostname", 0}, 96 [KP_IP4_ADDR] = {"ip4.addr", 0}, 97#ifdef INET6 98 [KP_IP6_ADDR] = {"ip6.addr", 0}, 99#endif 100 [KP_JID] = {"jid", 0}, 101 [KP_NAME] = {"name", 0}, 102 [KP_PATH] = {"path", 0}, 103 [KP_PERSIST] = {"persist", 0}, 104 [KP_SECURELEVEL] = {"securelevel", 0}, 105 [KP_VNET] = {"vnet", 0}, 106}; 107 108/* 109 * Parse the jail configuration file. 110 */ 111void 112load_config(void) 113{ 114 struct cfjails wild; 115 struct cfparams opp; 116 struct cfjail *j, *tj, *wj; 117 struct cfparam *p, *vp, *tp; 118 struct cfstring *s, *vs, *ns; 119 struct cfvar *v; 120 char *ep; 121 size_t varoff; 122 int did_self, jseq, pgen; 123 124 if (!strcmp(cfname, "-")) { 125 cfname = "STDIN"; 126 yyin = stdin; 127 } else { 128 yyin = fopen(cfname, "r"); 129 if (!yyin) 130 err(1, "%s", cfname); 131 } 132 if (yyparse() || yynerrs) 133 exit(1); 134 135 /* Separate the wildcard jails out from the actual jails. */ 136 jseq = 0; 137 TAILQ_INIT(&wild); 138 TAILQ_FOREACH_SAFE(j, &cfjails, tq, tj) { 139 j->seq = ++jseq; 140 if (wild_jail_name(j->name)) 141 requeue(j, &wild); 142 } 143 144 TAILQ_FOREACH(j, &cfjails, tq) { 145 /* Set aside the jail's parameters. */ 146 TAILQ_INIT(&opp); 147 TAILQ_CONCAT(&opp, &j->params, tq); 148 /* 149 * The jail name implies its "name" or "jid" parameter, 150 * though they may also be explicitly set later on. 151 */ 152 add_param(j, NULL, 153 strtol(j->name, &ep, 10) && !*ep ? KP_JID : KP_NAME, 154 j->name); 155 /* 156 * Collect parameters for the jail, global parameters/variables, 157 * and any matching wildcard jails. 158 */ 159 did_self = 0; 160 TAILQ_FOREACH(wj, &wild, tq) { 161 if (j->seq < wj->seq && !did_self) { 162 TAILQ_FOREACH(p, &opp, tq) 163 add_param(j, p, 0, NULL); 164 did_self = 1; 165 } 166 if (wild_jail_match(j->name, wj->name)) 167 TAILQ_FOREACH(p, &wj->params, tq) 168 add_param(j, p, 0, NULL); 169 } 170 if (!did_self) 171 TAILQ_FOREACH(p, &opp, tq) 172 add_param(j, p, 0, NULL); 173 174 /* Resolve any variable substitutions. */ 175 pgen = 0; 176 TAILQ_FOREACH(p, &j->params, tq) { 177 p->gen = ++pgen; 178 find_vars: 179 STAILQ_FOREACH(s, &p->val, tq) { 180 varoff = 0; 181 while ((v = STAILQ_FIRST(&s->vars))) { 182 TAILQ_FOREACH(vp, &j->params, tq) 183 if (!strcmp(vp->name, v->name)) 184 break; 185 if (!vp) { 186 jail_warnx(j, 187 "%s: variable \"%s\" not found", 188 p->name, v->name); 189 bad_var: 190 j->flags |= JF_FAILED; 191 TAILQ_FOREACH(vp, &j->params, tq) 192 if (vp->gen == pgen) 193 vp->flags |= PF_BAD; 194 goto free_var; 195 } 196 if (vp->flags & PF_BAD) 197 goto bad_var; 198 if (vp->gen == pgen) { 199 jail_warnx(j, "%s: variable loop", 200 v->name); 201 goto bad_var; 202 } 203 STAILQ_FOREACH(vs, &vp->val, tq) 204 if (!STAILQ_EMPTY(&vs->vars)) { 205 vp->gen = pgen; 206 TAILQ_REMOVE(&j->params, vp, 207 tq); 208 TAILQ_INSERT_BEFORE(p, vp, tq); 209 p = vp; 210 goto find_vars; 211 } 212 vs = STAILQ_FIRST(&vp->val); 213 if (STAILQ_NEXT(vs, tq) != NULL && 214 (s->s[0] != '\0' || 215 STAILQ_NEXT(v, tq))) { 216 jail_warnx(j, "%s: array cannot be " 217 "substituted inline", 218 p->name); 219 goto bad_var; 220 } 221 s->s = erealloc(s->s, s->len + vs->len + 1); 222 memmove(s->s + v->pos + varoff + vs->len, 223 s->s + v->pos + varoff, 224 s->len - (v->pos + varoff) + 1); 225 memcpy(s->s + v->pos + varoff, vs->s, vs->len); 226 varoff += vs->len; 227 s->len += vs->len; 228 while ((vs = STAILQ_NEXT(vs, tq))) { 229 ns = emalloc(sizeof(struct cfstring)); 230 ns->s = estrdup(vs->s); 231 ns->len = vs->len; 232 STAILQ_INIT(&ns->vars); 233 STAILQ_INSERT_AFTER(&p->val, s, ns, tq); 234 s = ns; 235 } 236 free_var: 237 free(v->name); 238 STAILQ_REMOVE_HEAD(&s->vars, tq); 239 free(v); 240 } 241 } 242 } 243 244 /* Free the jail's original parameter list and any variables. */ 245 while ((p = TAILQ_FIRST(&opp))) 246 free_param(&opp, p); 247 TAILQ_FOREACH_SAFE(p, &j->params, tq, tp) 248 if (p->flags & PF_VAR) 249 free_param(&j->params, p); 250 } 251 while ((wj = TAILQ_FIRST(&wild))) { 252 free(wj->name); 253 while ((p = TAILQ_FIRST(&wj->params))) 254 free_param(&wj->params, p); 255 TAILQ_REMOVE(&wild, wj, tq); 256 } 257} 258 259/* 260 * Create a new jail record. 261 */ 262struct cfjail * 263add_jail(void) 264{ 265 struct cfjail *j; 266 267 j = emalloc(sizeof(struct cfjail)); 268 memset(j, 0, sizeof(struct cfjail)); 269 TAILQ_INIT(&j->params); 270 STAILQ_INIT(&j->dep[DEP_FROM]); 271 STAILQ_INIT(&j->dep[DEP_TO]); 272 j->queue = &cfjails; 273 TAILQ_INSERT_TAIL(&cfjails, j, tq); 274 return j; 275} 276 277/* 278 * Add a parameter to a jail. 279 */ 280void 281add_param(struct cfjail *j, const struct cfparam *p, enum intparam ipnum, 282 const char *value) 283{ 284 struct cfstrings nss; 285 struct cfparam *dp, *np; 286 struct cfstring *s, *ns; 287 struct cfvar *v, *nv; 288 struct ipspec *ips; 289 const char *name; 290 char *cs, *tname; 291 unsigned flags; 292 293 if (j == NULL) { 294 /* Create a single anonymous jail if one doesn't yet exist. */ 295 j = TAILQ_LAST(&cfjails, cfjails); 296 if (j == NULL) 297 j = add_jail(); 298 } 299 STAILQ_INIT(&nss); 300 if (p != NULL) { 301 name = p->name; 302 flags = p->flags; 303 /* 304 * Make a copy of the parameter's string list, 305 * which may be freed if it's overridden later. 306 */ 307 STAILQ_FOREACH(s, &p->val, tq) { 308 ns = emalloc(sizeof(struct cfstring)); 309 ns->s = estrdup(s->s); 310 ns->len = s->len; 311 STAILQ_INIT(&ns->vars); 312 STAILQ_FOREACH(v, &s->vars, tq) { 313 nv = emalloc(sizeof(struct cfvar)); 314 nv->name = strdup(v->name); 315 nv->pos = v->pos; 316 STAILQ_INSERT_TAIL(&ns->vars, nv, tq); 317 } 318 STAILQ_INSERT_TAIL(&nss, ns, tq); 319 } 320 } else { 321 flags = PF_APPEND; 322 if (ipnum != 0) { 323 name = intparams[ipnum].name; 324 flags |= intparams[ipnum].flags; 325 } else if ((cs = strchr(value, '='))) { 326 tname = alloca(cs - value + 1); 327 strlcpy(tname, value, cs - value + 1); 328 name = tname; 329 value = cs + 1; 330 } else { 331 name = value; 332 value = NULL; 333 } 334 if (value != NULL) { 335 ns = emalloc(sizeof(struct cfstring)); 336 ns->s = estrdup(value); 337 ns->len = strlen(value); 338 STAILQ_INIT(&ns->vars); 339 STAILQ_INSERT_TAIL(&nss, ns, tq); 340 } 341 } 342 343 /* See if this parameter has already been added. */ 344 if (ipnum != 0) 345 dp = j->intparams[ipnum]; 346 else 347 TAILQ_FOREACH(dp, &j->params, tq) 348 if (!(dp->flags & PF_CONV) && equalopts(dp->name, name)) 349 break; 350 if (dp != NULL) { 351 /* Found it - append or replace. */ 352 if (strcmp(dp->name, name)) { 353 free(dp->name); 354 dp->name = estrdup(name); 355 } 356 if (!(flags & PF_APPEND) || STAILQ_EMPTY(&nss)) 357 free_param_strings(dp); 358 STAILQ_CONCAT(&dp->val, &nss); 359 dp->flags |= flags; 360 } else { 361 /* Not found - add it. */ 362 np = emalloc(sizeof(struct cfparam)); 363 np->name = estrdup(name); 364 STAILQ_INIT(&np->val); 365 STAILQ_CONCAT(&np->val, &nss); 366 np->flags = flags; 367 np->gen = 0; 368 TAILQ_INSERT_TAIL(&j->params, np, tq); 369 if (ipnum != 0) 370 j->intparams[ipnum] = np; 371 else 372 for (ipnum = 1; ipnum < IP_NPARAM; ipnum++) 373 if (!(intparams[ipnum].flags & PF_CONV) && 374 equalopts(name, intparams[ipnum].name)) { 375 j->intparams[ipnum] = np; 376 np->flags |= intparams[ipnum].flags; 377 break; 378 } 379 } 380} 381 382/* 383 * Return if a boolean parameter exists and is true. 384 */ 385int 386bool_param(const struct cfparam *p) 387{ 388 const char *cs; 389 390 if (p == NULL) 391 return 0; 392 cs = strrchr(p->name, '.'); 393 return !strncmp(cs ? cs + 1 : p->name, "no", 2) ^ 394 (STAILQ_EMPTY(&p->val) || 395 !strcasecmp(STAILQ_LAST(&p->val, cfstring, tq)->s, "true") || 396 (strtol(STAILQ_LAST(&p->val, cfstring, tq)->s, NULL, 10))); 397} 398 399/* 400 * Set an integer if a parameter if it exists. 401 */ 402int 403int_param(const struct cfparam *p, int *ip) 404{ 405 if (p == NULL || STAILQ_EMPTY(&p->val)) 406 return 0; 407 *ip = strtol(STAILQ_LAST(&p->val, cfstring, tq)->s, NULL, 10); 408 return 1; 409} 410 411/* 412 * Return the string value of a scalar parameter if it exists. 413 */ 414const char * 415string_param(const struct cfparam *p) 416{ 417 return (p && !STAILQ_EMPTY(&p->val) 418 ? STAILQ_LAST(&p->val, cfstring, tq)->s : NULL); 419} 420 421/* 422 * Check syntax and values of internal parameters. Set some internal 423 * parameters based on the values of others. 424 */ 425int 426check_intparams(struct cfjail *j) 427{ 428 struct in_addr addr4; 429 struct addrinfo hints; 430 struct addrinfo *ai0, *ai; 431 struct cfparam *p; 432 struct cfstring *s, *ns; 433 const char *hostname, *val; 434 char *cs, *ep; 435 size_t size; 436 int error, gicode, ip4ok, defif, prefix; 437 int mib[4]; 438 char avalue4[INET_ADDRSTRLEN]; 439#ifdef INET6 440 struct in6_addr addr6; 441 int ip6ok, isip6; 442 char avalue6[INET6_ADDRSTRLEN]; 443#endif 444 445 error = 0; 446 /* Check format of boolan and integer values. */ 447 TAILQ_FOREACH(p, &j->params, tq) { 448 if (!STAILQ_EMPTY(&p->val) && 449 (p->flags & (PF_BOOL | PF_INT))) { 450 val = STAILQ_LAST(&p->val, cfstring, tq)->s; 451 if (p->flags & PF_BOOL) { 452 if (strcasecmp(val, "false") && 453 strcasecmp(val, "true") && 454 ((void)strtol(val, &ep, 10), *ep)) { 455 jail_warnx(j, 456 "%s: unknown boolean value \"%s\"", 457 p->name, val); 458 error = -1; 459 } 460 } else { 461 (void)strtol(val, &ep, 10); 462 if (ep == val || *ep) { 463 jail_warnx(j, 464 "%s: non-integer value \"%s\"", 465 p->name, val); 466 error = -1; 467 } 468 } 469 } 470 } 471 472 /* 473 * The ip_hostname parameter looks up the hostname, and adds parameters 474 * for any IP addresses it finds. 475 */ 476 if (((j->flags & JF_OP_MASK) != JF_STOP || 477 j->intparams[IP_INTERFACE] != NULL) && 478 bool_param(j->intparams[IP_IP_HOSTNAME]) && 479 (hostname = string_param(j->intparams[KP_HOST_HOSTNAME]))) { 480 j->intparams[IP_IP_HOSTNAME] = NULL; 481 /* 482 * Silently ignore unsupported address families from 483 * DNS lookups. 484 */ 485 size = 4; 486 ip4ok = sysctlnametomib("security.jail.param.ip4", mib, &size) 487 == 0; 488#ifdef INET6 489 size = 4; 490 ip6ok = sysctlnametomib("security.jail.param.ip6", mib, &size) 491 == 0; 492#endif 493 if (ip4ok 494#ifdef INET6 495 || ip6ok 496#endif 497 ) { 498 /* Look up the hostname (or get the address) */ 499 memset(&hints, 0, sizeof(hints)); 500 hints.ai_socktype = SOCK_STREAM; 501 hints.ai_family = 502#ifdef INET6 503 ip6ok ? (ip4ok ? PF_UNSPEC : PF_INET6) : 504#endif 505 PF_INET; 506 gicode = getaddrinfo(hostname, NULL, &hints, &ai0); 507 if (gicode != 0) { 508 jail_warnx(j, "host.hostname %s: %s", hostname, 509 gai_strerror(gicode)); 510 error = -1; 511 } else { 512 /* 513 * Convert the addresses to ASCII so jailparam 514 * can convert them back. Errors are not 515 * expected here. 516 */ 517 for (ai = ai0; ai; ai = ai->ai_next) 518 switch (ai->ai_family) { 519 case AF_INET: 520 memcpy(&addr4, 521 &((struct sockaddr_in *) 522 (void *)ai->ai_addr)-> 523 sin_addr, sizeof(addr4)); 524 if (inet_ntop(AF_INET, 525 &addr4, avalue4, 526 INET_ADDRSTRLEN) == NULL) 527 err(1, "inet_ntop"); 528 add_param(j, NULL, KP_IP4_ADDR, 529 avalue4); 530 break; 531#ifdef INET6 532 case AF_INET6: 533 memcpy(&addr6, 534 &((struct sockaddr_in6 *) 535 (void *)ai->ai_addr)-> 536 sin6_addr, sizeof(addr6)); 537 if (inet_ntop(AF_INET6, 538 &addr6, avalue6, 539 INET6_ADDRSTRLEN) == NULL) 540 err(1, "inet_ntop"); 541 add_param(j, NULL, KP_IP6_ADDR, 542 avalue6); 543 break; 544#endif 545 } 546 freeaddrinfo(ai0); 547 } 548 } 549 } 550 551 /* 552 * IP addresses may include an interface to set that address on, 553 * and a netmask/suffix for that address. 554 */ 555 defif = string_param(j->intparams[IP_INTERFACE]) != NULL; 556#ifdef INET6 557 for (isip6 = 0; isip6 <= 1; isip6++) 558#else 559#define isip6 0 560 do 561#endif 562 { 563 if (j->intparams[KP_IP4_ADDR + isip6] == NULL) 564 continue; 565 STAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR + isip6]->val, tq) { 566 cs = strchr(s->s, '|'); 567 if (cs || defif) 568 add_param(j, NULL, IP__IP4_IFADDR + isip6, 569 s->s); 570 if (cs) { 571 strcpy(s->s, cs + 1); 572 s->len -= cs + 1 - s->s; 573 } 574 if ((cs = strchr(s->s, '/'))) { 575 prefix = strtol(cs + 1, &ep, 10); 576 if ( 577#ifdef INET6 578 !isip6 && 579#endif 580 *ep == '.' 581 ? inet_pton(AF_INET, cs + 1, &addr4) != 1 582 : *ep || prefix < 0 || prefix > ( 583#ifdef INET6 584 isip6 ? 128 : 585#endif 586 32)) { 587 jail_warnx(j, 588#ifdef INET6 589 isip6 590 ? "ip6.addr: bad prefixlen \"%s\"" : 591#endif 592 "ip4.addr: bad netmask \"%s\"", 593 cs); 594 error = -1; 595 } 596 *cs = '\0'; 597 s->len = cs - s->s + 1; 598 } 599 } 600 } 601#ifndef INET6 602 while (0); 603#endif 604 return error; 605} 606 607/* 608 * Import parameters into libjail's binary jailparam format. 609 */ 610int 611import_params(struct cfjail *j) 612{ 613 struct cfparam *p; 614 struct cfstring *s, *ts; 615 struct jailparam *jp; 616 char *value, *cs; 617 size_t vallen; 618 int error; 619 620 error = 0; 621 j->njp = 0; 622 TAILQ_FOREACH(p, &j->params, tq) 623 if (!(p->flags & PF_INTERNAL)) 624 j->njp++; 625 j->jp = jp = emalloc(j->njp * sizeof(struct jailparam)); 626 TAILQ_FOREACH(p, &j->params, tq) { 627 if (p->flags & PF_INTERNAL) 628 continue; 629 if (jailparam_init(jp, p->name) < 0) { 630 error = -1; 631 jail_warnx(j, "%s", jail_errmsg); 632 continue; 633 } 634 if (STAILQ_EMPTY(&p->val)) 635 value = NULL; 636 else if (!jp->jp_elemlen || 637 !STAILQ_NEXT(STAILQ_FIRST(&p->val), tq)) { 638 /* 639 * Scalar parameters silently discard multiple (array) 640 * values, keeping only the last value added. This 641 * lets values added from the command line append to 642 * arrays wthout pre-checking the type. 643 */ 644 value = STAILQ_LAST(&p->val, cfstring, tq)->s; 645 } else { 646 /* 647 * Convert arrays into comma-separated strings, which 648 * jailparam_import will then convert back into arrays. 649 */ 650 vallen = 0; 651 STAILQ_FOREACH(s, &p->val, tq) 652 vallen += s->len + 1; 653 value = alloca(vallen); 654 cs = value; 655 STAILQ_FOREACH_SAFE(s, &p->val, tq, ts) { 656 strcpy(cs, s->s); 657 if (ts != NULL) { 658 cs += s->len + 1; 659 cs[-1] = ','; 660 } 661 } 662 } 663 if (jailparam_import(jp, value) < 0) { 664 error = -1; 665 jail_warnx(j, "%s", jail_errmsg); 666 } 667 jp++; 668 } 669 if (error) { 670 jailparam_free(j->jp, j->njp); 671 free(j->jp); 672 j->jp = NULL; 673 failed(j); 674 } 675 return error; 676} 677 678/* 679 * Check if options are equal (with or without the "no" prefix). 680 */ 681int 682equalopts(const char *opt1, const char *opt2) 683{ 684 char *p; 685 686 /* "opt" vs. "opt" or "noopt" vs. "noopt" */ 687 if (strcmp(opt1, opt2) == 0) 688 return (1); 689 /* "noopt" vs. "opt" */ 690 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0) 691 return (1); 692 /* "opt" vs. "noopt" */ 693 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0) 694 return (1); 695 while ((p = strchr(opt1, '.')) != NULL && 696 !strncmp(opt1, opt2, ++p - opt1)) { 697 opt2 += p - opt1; 698 opt1 = p; 699 /* "foo.noopt" vs. "foo.opt" */ 700 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0) 701 return (1); 702 /* "foo.opt" vs. "foo.noopt" */ 703 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0) 704 return (1); 705 } 706 return (0); 707} 708 709/* 710 * See if a jail name matches a wildcard. 711 */ 712int 713wild_jail_match(const char *jname, const char *wname) 714{ 715 const char *jc, *jd, *wc, *wd; 716 717 /* 718 * A non-final "*" component in the wild name matches a single jail 719 * component, and a final "*" matches one or more jail components. 720 */ 721 for (jc = jname, wc = wname; 722 (jd = strchr(jc, '.')) && (wd = strchr(wc, '.')); 723 jc = jd + 1, wc = wd + 1) 724 if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2)) 725 return 0; 726 return (!strcmp(jc, wc) || !strcmp(wc, "*")); 727} 728 729/* 730 * Return if a jail name is a wildcard. 731 */ 732int 733wild_jail_name(const char *wname) 734{ 735 const char *wc; 736 737 for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*')) 738 if ((wc == wname || wc[-1] == '.') && 739 (wc[1] == '\0' || wc[1] == '.')) 740 return 1; 741 return 0; 742} 743 744/* 745 * Free a parameter record and all its strings and variables. 746 */ 747static void 748free_param(struct cfparams *pp, struct cfparam *p) 749{ 750 free(p->name); 751 free_param_strings(p); 752 TAILQ_REMOVE(pp, p, tq); 753 free(p); 754} 755 756static void 757free_param_strings(struct cfparam *p) 758{ 759 struct cfstring *s; 760 struct cfvar *v; 761 762 while ((s = STAILQ_FIRST(&p->val))) { 763 free(s->s); 764 while ((v = STAILQ_FIRST(&s->vars))) { 765 free(v->name); 766 STAILQ_REMOVE_HEAD(&s->vars, tq); 767 free(v); 768 } 769 STAILQ_REMOVE_HEAD(&p->val, tq); 770 free(s); 771 } 772} 773