1 /*
2 * smallapp/unbound-checkconf.c - config file checker for unbound.conf file.
3 *
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
5 *
6 * This software is open source.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 *
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 /**
37 * \file
38 *
39 * The config checker checks for syntax and other errors in the unbound.conf
40 * file, and can be used to check for errors before the server is started
41 * or sigHUPped.
42 * Exit status 1 means an error.
43 */
44
45 #include "config.h"
46 #include <ctype.h>
47 #include "util/log.h"
48 #include "util/config_file.h"
49 #include "util/module.h"
50 #include "util/net_help.h"
51 #include "util/regional.h"
52 #include "iterator/iterator.h"
53 #include "iterator/iter_fwd.h"
54 #include "iterator/iter_hints.h"
55 #include "validator/validator.h"
56 #include "services/localzone.h"
57 #include "services/listen_dnsport.h"
58 #include "services/view.h"
59 #include "services/authzone.h"
60 #include "respip/respip.h"
61 #include "sldns/sbuffer.h"
62 #include "sldns/str2wire.h"
63 #ifdef HAVE_GETOPT_H
64 #include <getopt.h>
65 #endif
66 #ifdef HAVE_PWD_H
67 #include <pwd.h>
68 #endif
69 #ifdef HAVE_SYS_STAT_H
70 #include <sys/stat.h>
71 #endif
72 #ifdef HAVE_GLOB_H
73 #include <glob.h>
74 #endif
75 #ifdef WITH_PYTHONMODULE
76 #include "pythonmod/pythonmod.h"
77 #endif
78 #ifdef CLIENT_SUBNET
79 #include "edns-subnet/subnet-whitelist.h"
80 #endif
81
82 /** Give checkconf usage, and exit (1). */
83 static void
usage(void)84 usage(void)
85 {
86 printf("Usage: local-unbound-checkconf [file]\n");
87 printf(" Checks unbound configuration file for errors.\n");
88 printf("file if omitted %s is used.\n", CONFIGFILE);
89 printf("-o option print value of option to stdout.\n");
90 printf("-f output full pathname with chroot applied, eg. with -o pidfile.\n");
91 printf("-q quiet (suppress output on success).\n");
92 printf("-h show this usage help.\n");
93 printf("Version %s\n", PACKAGE_VERSION);
94 printf("BSD licensed, see LICENSE in source package for details.\n");
95 printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
96 exit(1);
97 }
98
99 /**
100 * Print given option to stdout
101 * @param cfg: config
102 * @param opt: option name without trailing :.
103 * This is different from config_set_option.
104 * @param final: if final pathname with chroot applied has to be printed.
105 */
106 static void
print_option(struct config_file * cfg,const char * opt,int final)107 print_option(struct config_file* cfg, const char* opt, int final)
108 {
109 if(strcmp(opt, "pidfile") == 0 && final) {
110 char *p = fname_after_chroot(cfg->pidfile, cfg, 1);
111 if(!p) fatal_exit("out of memory");
112 printf("%s\n", p);
113 free(p);
114 return;
115 }
116 if(strcmp(opt, "auto-trust-anchor-file") == 0 && final) {
117 struct config_strlist* s = cfg->auto_trust_anchor_file_list;
118 for(; s; s=s->next) {
119 char *p = fname_after_chroot(s->str, cfg, 1);
120 if(!p) fatal_exit("out of memory");
121 printf("%s\n", p);
122 free(p);
123 }
124 return;
125 }
126 if(!config_get_option(cfg, opt, config_print_func, stdout))
127 fatal_exit("cannot print option '%s'", opt);
128 }
129
130 /** check if module works with config */
131 static void
check_mod(struct config_file * cfg,struct module_func_block * fb)132 check_mod(struct config_file* cfg, struct module_func_block* fb)
133 {
134 struct module_env env;
135 memset(&env, 0, sizeof(env));
136 env.cfg = cfg;
137 env.scratch = regional_create();
138 env.scratch_buffer = sldns_buffer_new(BUFSIZ);
139 if(!env.scratch || !env.scratch_buffer)
140 fatal_exit("out of memory");
141 if(!edns_known_options_init(&env))
142 fatal_exit("out of memory");
143 if(fb->startup && !(*fb->startup)(&env, 0))
144 fatal_exit("bad config during startup for %s module", fb->name);
145 if(!(*fb->init)(&env, 0))
146 fatal_exit("bad config during init for %s module", fb->name);
147 (*fb->deinit)(&env, 0);
148 if(fb->destartup)
149 (*fb->destartup)(&env, 0);
150 sldns_buffer_free(env.scratch_buffer);
151 regional_destroy(env.scratch);
152 edns_known_options_delete(&env);
153 }
154
155 /** true if addr is a localhost address, 127.0.0.1 or ::1 (with maybe "@port"
156 * after it) */
157 static int
str_addr_is_localhost(const char * a)158 str_addr_is_localhost(const char* a)
159 {
160 if(strncmp(a, "127.", 4) == 0) return 1;
161 if(strncmp(a, "::1", 3) == 0) return 1;
162 return 0;
163 }
164
165 /** check do-not-query-localhost */
166 static void
donotquerylocalhostcheck(struct config_file * cfg)167 donotquerylocalhostcheck(struct config_file* cfg)
168 {
169 if(cfg->donotquery_localhost) {
170 struct config_stub* p;
171 struct config_strlist* s;
172 for(p=cfg->forwards; p; p=p->next) {
173 for(s=p->addrs; s; s=s->next) {
174 if(str_addr_is_localhost(s->str)) {
175 fprintf(stderr, "unbound-checkconf: warning: forward-addr: '%s' is specified for forward-zone: '%s', but do-not-query-localhost: yes means that the address will not be used for lookups.\n",
176 s->str, p->name);
177 }
178 }
179 }
180 for(p=cfg->stubs; p; p=p->next) {
181 for(s=p->addrs; s; s=s->next) {
182 if(str_addr_is_localhost(s->str)) {
183 fprintf(stderr, "unbound-checkconf: warning: stub-addr: '%s' is specified for stub-zone: '%s', but do-not-query-localhost: yes means that the address will not be used for lookups.\n",
184 s->str, p->name);
185 }
186 }
187 }
188 }
189 }
190
191 /** check localzones */
192 static void
localzonechecks(struct config_file * cfg)193 localzonechecks(struct config_file* cfg)
194 {
195 struct local_zones* zs;
196 if(!(zs = local_zones_create()))
197 fatal_exit("out of memory");
198 if(!local_zones_apply_cfg(zs, cfg))
199 fatal_exit("failed local-zone, local-data configuration");
200 local_zones_delete(zs);
201 }
202
203 /** checks for acl and views */
204 static void
acl_view_tag_checks(struct config_file * cfg,struct views * views)205 acl_view_tag_checks(struct config_file* cfg, struct views* views)
206 {
207 int d;
208 struct sockaddr_storage a;
209 socklen_t alen;
210 struct config_str2list* acl;
211 struct config_str3list* s3;
212 struct config_strbytelist* sb;
213
214 /* acl_view */
215 for(acl=cfg->acl_view; acl; acl = acl->next) {
216 struct view* v;
217 if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen,
218 &d)) {
219 fatal_exit("cannot parse access-control-view "
220 "address %s %s", acl->str, acl->str2);
221 }
222 v = views_find_view(views, acl->str2, 0);
223 if(!v) {
224 fatal_exit("cannot find view for "
225 "access-control-view: %s %s",
226 acl->str, acl->str2);
227 }
228 lock_rw_unlock(&v->lock);
229 }
230
231 /* acl_tags */
232 for(sb=cfg->acl_tags; sb; sb = sb->next) {
233 if(!netblockstrtoaddr(sb->str, UNBOUND_DNS_PORT, &a, &alen,
234 &d)) {
235 fatal_exit("cannot parse access-control-tags "
236 "address %s", sb->str);
237 }
238 }
239
240 /* acl_tag_actions */
241 for(s3=cfg->acl_tag_actions; s3; s3 = s3->next) {
242 enum localzone_type t;
243 if(!netblockstrtoaddr(s3->str, UNBOUND_DNS_PORT, &a, &alen,
244 &d)) {
245 fatal_exit("cannot parse access-control-tag-actions "
246 "address %s %s %s",
247 s3->str, s3->str2, s3->str3);
248 }
249 if(find_tag_id(cfg, s3->str2) == -1) {
250 fatal_exit("cannot parse tag %s (define-tag it), "
251 "for access-control-tag-actions: %s %s %s",
252 s3->str2, s3->str, s3->str2, s3->str3);
253 }
254 if(!local_zone_str2type(s3->str3, &t)) {
255 fatal_exit("cannot parse access control action type %s"
256 " for access-control-tag-actions: %s %s %s",
257 s3->str3, s3->str, s3->str2, s3->str3);
258 }
259 }
260
261 /* acl_tag_datas */
262 for(s3=cfg->acl_tag_datas; s3; s3 = s3->next) {
263 char buf[65536];
264 uint8_t rr[LDNS_RR_BUF_SIZE];
265 size_t len = sizeof(rr);
266 int res;
267 if(!netblockstrtoaddr(s3->str, UNBOUND_DNS_PORT, &a, &alen,
268 &d)) {
269 fatal_exit("cannot parse access-control-tag-datas address %s %s '%s'",
270 s3->str, s3->str2, s3->str3);
271 }
272 if(find_tag_id(cfg, s3->str2) == -1) {
273 fatal_exit("cannot parse tag %s (define-tag it), "
274 "for access-control-tag-datas: %s %s '%s'",
275 s3->str2, s3->str, s3->str2, s3->str3);
276 }
277 /* '.' is sufficient for validation, and it makes the call to
278 * sldns_wirerr_get_type() simpler below. */
279 snprintf(buf, sizeof(buf), "%s %s", ".", s3->str3);
280 res = sldns_str2wire_rr_buf(buf, rr, &len, NULL, 3600, NULL,
281 0, NULL, 0);
282 if(res != 0) {
283 fatal_exit("cannot parse rr data [char %d] parse error %s, for access-control-tag-datas: %s %s '%s'",
284 (int)LDNS_WIREPARSE_OFFSET(res)-2,
285 sldns_get_errorstr_parse(res),
286 s3->str, s3->str2, s3->str3);
287 }
288 }
289 }
290
291 /** check view and response-ip configuration */
292 static void
view_and_respipchecks(struct config_file * cfg)293 view_and_respipchecks(struct config_file* cfg)
294 {
295 struct views* views = NULL;
296 struct respip_set* respip = NULL;
297 int have_view_respip_cfg = 0;
298 int use_response_ip = 0;
299 if(!(views = views_create()))
300 fatal_exit("Could not create views: out of memory");
301 if(!(respip = respip_set_create()))
302 fatal_exit("Could not create respip set: out of memory");
303 if(!views_apply_cfg(views, cfg))
304 fatal_exit("Could not set up views");
305 if(!respip_global_apply_cfg(respip, cfg))
306 fatal_exit("Could not setup respip set");
307 if(!respip_views_apply_cfg(views, cfg, &have_view_respip_cfg))
308 fatal_exit("Could not setup per-view respip sets");
309 use_response_ip = !respip_set_is_empty(respip) || have_view_respip_cfg;
310 if(use_response_ip && !strstr(cfg->module_conf, "respip"))
311 fatal_exit("response-ip options require respip module");
312 acl_view_tag_checks(cfg, views);
313 views_delete(views);
314 respip_set_delete(respip);
315 }
316
317 /** emit warnings for IP in hosts */
318 static void
warn_hosts(const char * typ,struct config_stub * list)319 warn_hosts(const char* typ, struct config_stub* list)
320 {
321 struct sockaddr_storage a;
322 socklen_t alen;
323 struct config_stub* s;
324 struct config_strlist* h;
325 for(s=list; s; s=s->next) {
326 for(h=s->hosts; h; h=h->next) {
327 if(extstrtoaddr(h->str, &a, &alen, UNBOUND_DNS_PORT)) {
328 fprintf(stderr, "unbound-checkconf: warning:"
329 " %s %s: \"%s\" is an IP%s address, "
330 "and when looked up as a host name "
331 "during use may not resolve.\n",
332 s->name, typ, h->str,
333 addr_is_ip6(&a, alen)?"6":"4");
334 }
335 }
336 }
337 }
338
339 /** check interface strings */
340 static void
interfacechecks(struct config_file * cfg)341 interfacechecks(struct config_file* cfg)
342 {
343 int d;
344 struct sockaddr_storage a;
345 socklen_t alen;
346 int i, j, i2, j2;
347 char*** resif = NULL;
348 int* num_resif = NULL;
349
350 if(cfg->num_ifs != 0) {
351 resif = (char***)calloc(cfg->num_ifs, sizeof(char**));
352 if(!resif) fatal_exit("malloc failure");
353 num_resif = (int*)calloc(cfg->num_ifs, sizeof(int));
354 if(!num_resif) fatal_exit("malloc failure");
355 }
356 for(i=0; i<cfg->num_ifs; i++) {
357 /* search for duplicates in IP or ifname arguments */
358 for(i2=0; i2<i; i2++) {
359 if(strcmp(cfg->ifs[i], cfg->ifs[i2]) == 0) {
360 fatal_exit("interface: %s present twice, "
361 "cannot bind same ports twice.",
362 cfg->ifs[i]);
363 }
364 }
365 if(!resolve_interface_names(&cfg->ifs[i], 1, NULL, &resif[i],
366 &num_resif[i])) {
367 fatal_exit("could not resolve interface names, for %s",
368 cfg->ifs[i]);
369 }
370 /* check for port combinations that are not supported */
371 if(if_is_pp2(resif[i][0], cfg->port, cfg->proxy_protocol_port)) {
372 if(if_is_dnscrypt(resif[i][0], cfg->port,
373 cfg->dnscrypt_port)) {
374 fatal_exit("PROXYv2 and DNSCrypt combination not "
375 "supported!");
376 } else if(if_is_https(resif[i][0], cfg->port,
377 cfg->https_port)) {
378 fatal_exit("PROXYv2 and DoH combination not "
379 "supported!");
380 } else if(if_is_quic(resif[i][0], cfg->port,
381 cfg->quic_port)) {
382 fatal_exit("PROXYv2 and DoQ combination not "
383 "supported!");
384 }
385 }
386 /* search for duplicates in the returned addresses */
387 for(j=0; j<num_resif[i]; j++) {
388 if(!extstrtoaddr(resif[i][j], &a, &alen, cfg->port)) {
389 if(strcmp(cfg->ifs[i], resif[i][j]) != 0)
390 fatal_exit("cannot parse interface address '%s' from the interface specified as '%s'",
391 resif[i][j], cfg->ifs[i]);
392 else
393 fatal_exit("cannot parse interface specified as '%s'",
394 cfg->ifs[i]);
395 }
396 for(i2=0; i2<i; i2++) {
397 for(j2=0; j2<num_resif[i2]; j2++) {
398 if(strcmp(resif[i][j], resif[i2][j2])
399 == 0) {
400 char info1[1024], info2[1024];
401 if(strcmp(cfg->ifs[i], resif[i][j]) != 0)
402 snprintf(info1, sizeof(info1), "address %s from interface: %s", resif[i][j], cfg->ifs[i]);
403 else snprintf(info1, sizeof(info1), "interface: %s", cfg->ifs[i]);
404 if(strcmp(cfg->ifs[i2], resif[i2][j2]) != 0)
405 snprintf(info2, sizeof(info2), "address %s from interface: %s", resif[i2][j2], cfg->ifs[i2]);
406 else snprintf(info2, sizeof(info2), "interface: %s", cfg->ifs[i2]);
407 fatal_exit("%s present twice, cannot bind the same ports twice. The first entry is %s and the second is %s", resif[i][j], info2, info1);
408 }
409 }
410 }
411 }
412 }
413
414 for(i=0; i<cfg->num_ifs; i++) {
415 config_del_strarray(resif[i], num_resif[i]);
416 }
417 free(resif);
418 free(num_resif);
419
420 for(i=0; i<cfg->num_out_ifs; i++) {
421 if(!ipstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen) &&
422 !netblockstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen, &d)) {
423 fatal_exit("cannot parse outgoing-interface "
424 "specified as '%s'", cfg->out_ifs[i]);
425 }
426 for(j=0; j<cfg->num_out_ifs; j++) {
427 if(i!=j && strcmp(cfg->out_ifs[i], cfg->out_ifs[j])==0)
428 fatal_exit("outgoing-interface: %s present "
429 "twice, cannot bind same ports twice.",
430 cfg->out_ifs[i]);
431 }
432 }
433 }
434
435 /** check interface-automatic-ports */
436 static void
ifautomaticportschecks(char * ifautomaticports)437 ifautomaticportschecks(char* ifautomaticports)
438 {
439 char* now = ifautomaticports;
440 while(now && *now) {
441 char* after;
442 int extraport;
443 while(isspace((unsigned char)*now))
444 now++;
445 if(!*now)
446 break;
447 after = now;
448 extraport = (int)strtol(now, &after, 10);
449 if(extraport < 0 || extraport > 65535)
450 fatal_exit("interface-automatic-ports: port out of range at position %d in '%s'", (int)(now-ifautomaticports)+1, ifautomaticports);
451 if(extraport == 0 && now == after)
452 fatal_exit("interface-automatic-ports: parse error at position %d in '%s'", (int)(now-ifautomaticports)+1, ifautomaticports);
453 now = after;
454 }
455 }
456
457 /** check control interface strings */
458 static void
controlinterfacechecks(struct config_file * cfg)459 controlinterfacechecks(struct config_file* cfg)
460 {
461 struct config_strlist* p;
462 for(p = cfg->control_ifs.first; p; p = p->next) {
463 struct sockaddr_storage a;
464 socklen_t alen;
465 char** rcif = NULL;
466 int i, num_rcif = 0;
467 /* See if it is a local socket, starts with a '/'. */
468 if(p->str && p->str[0] == '/')
469 continue;
470 if(!resolve_interface_names(&p->str, 1, NULL, &rcif,
471 &num_rcif)) {
472 fatal_exit("could not resolve interface names, for control-interface: %s",
473 p->str);
474 }
475 for(i=0; i<num_rcif; i++) {
476 if(!extstrtoaddr(rcif[i], &a, &alen,
477 cfg->control_port)) {
478 if(strcmp(p->str, rcif[i])!=0)
479 fatal_exit("cannot parse control-interface address '%s' from the control-interface specified as '%s'",
480 rcif[i], p->str);
481 else
482 fatal_exit("cannot parse control-interface specified as '%s'",
483 p->str);
484 }
485 }
486 config_del_strarray(rcif, num_rcif);
487 }
488 }
489
490 /** check acl ips */
491 static void
aclchecks(struct config_file * cfg)492 aclchecks(struct config_file* cfg)
493 {
494 int d;
495 struct sockaddr_storage a;
496 socklen_t alen;
497 struct config_str2list* acl;
498 for(acl=cfg->acls; acl; acl = acl->next) {
499 if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen,
500 &d)) {
501 fatal_exit("cannot parse access control address %s %s",
502 acl->str, acl->str2);
503 }
504 }
505 }
506
507 /** check tcp connection limit ips */
508 static void
tcpconnlimitchecks(struct config_file * cfg)509 tcpconnlimitchecks(struct config_file* cfg)
510 {
511 int d;
512 struct sockaddr_storage a;
513 socklen_t alen;
514 struct config_str2list* tcl;
515 for(tcl=cfg->tcp_connection_limits; tcl; tcl = tcl->next) {
516 if(!netblockstrtoaddr(tcl->str, UNBOUND_DNS_PORT, &a, &alen,
517 &d)) {
518 fatal_exit("cannot parse tcp connection limit address %s %s",
519 tcl->str, tcl->str2);
520 }
521 }
522 }
523
524 /** true if fname is a file */
525 static int
is_file(const char * fname)526 is_file(const char* fname)
527 {
528 struct stat buf;
529 if(stat(fname, &buf) < 0) {
530 if(errno==EACCES) {
531 printf("warning: no search permission for one of the directories in path: %s\n", fname);
532 return 1;
533 }
534 perror(fname);
535 return 0;
536 }
537 if(S_ISDIR(buf.st_mode)) {
538 printf("%s is not a file\n", fname);
539 return 0;
540 }
541 return 1;
542 }
543
544 /** true if fname is a directory */
545 static int
is_dir(const char * fname)546 is_dir(const char* fname)
547 {
548 struct stat buf;
549 if(stat(fname, &buf) < 0) {
550 if(errno==EACCES) {
551 printf("warning: no search permission for one of the directories in path: %s\n", fname);
552 return 1;
553 }
554 perror(fname);
555 return 0;
556 }
557 if(!(S_ISDIR(buf.st_mode))) {
558 printf("%s is not a directory\n", fname);
559 return 0;
560 }
561 return 1;
562 }
563
564 /** get base dir of a fname */
565 static char*
basedir(char * fname)566 basedir(char* fname)
567 {
568 char* rev;
569 if(!fname) fatal_exit("out of memory");
570 rev = strrchr(fname, '/');
571 if(!rev) return NULL;
572 if(fname == rev) return NULL;
573 rev[0] = 0;
574 return fname;
575 }
576
577 /** check chroot for a file string */
578 static void
check_chroot_string(const char * desc,char ** ss,const char * chrootdir,struct config_file * cfg)579 check_chroot_string(const char* desc, char** ss,
580 const char* chrootdir, struct config_file* cfg)
581 {
582 char* str = *ss;
583 if(str && str[0]) {
584 *ss = fname_after_chroot(str, cfg, 1);
585 if(!*ss) fatal_exit("out of memory");
586 if(!is_file(*ss)) {
587 if(chrootdir && chrootdir[0])
588 fatal_exit("%s: \"%s\" does not exist in "
589 "chrootdir %s", desc, str, chrootdir);
590 else
591 fatal_exit("%s: \"%s\" does not exist",
592 desc, str);
593 }
594 /* put in a new full path for continued checking */
595 free(str);
596 }
597 }
598
599 /** check file list, every file must be inside the chroot location */
600 static void
check_chroot_filelist(const char * desc,struct config_strlist * list,const char * chrootdir,struct config_file * cfg)601 check_chroot_filelist(const char* desc, struct config_strlist* list,
602 const char* chrootdir, struct config_file* cfg)
603 {
604 struct config_strlist* p;
605 for(p=list; p; p=p->next) {
606 check_chroot_string(desc, &p->str, chrootdir, cfg);
607 }
608 }
609
610 /** check file list, with wildcard processing */
611 static void
check_chroot_filelist_wild(const char * desc,struct config_strlist * list,const char * chrootdir,struct config_file * cfg)612 check_chroot_filelist_wild(const char* desc, struct config_strlist* list,
613 const char* chrootdir, struct config_file* cfg)
614 {
615 struct config_strlist* p;
616 for(p=list; p; p=p->next) {
617 #ifdef HAVE_GLOB
618 if(strchr(p->str, '*') || strchr(p->str, '[') ||
619 strchr(p->str, '?') || strchr(p->str, '{') ||
620 strchr(p->str, '~')) {
621 char* s = p->str;
622 /* adjust whole pattern for chroot and check later */
623 p->str = fname_after_chroot(p->str, cfg, 1);
624 free(s);
625 } else
626 #endif /* HAVE_GLOB */
627 check_chroot_string(desc, &p->str, chrootdir, cfg);
628 }
629 }
630
631 #ifdef CLIENT_SUBNET
632 /** check ECS configuration */
633 static void
ecs_conf_checks(struct config_file * cfg)634 ecs_conf_checks(struct config_file* cfg)
635 {
636 struct ecs_whitelist* whitelist = NULL;
637 if(!(whitelist = ecs_whitelist_create()))
638 fatal_exit("Could not create ednssubnet whitelist: out of memory");
639 if(!ecs_whitelist_apply_cfg(whitelist, cfg))
640 fatal_exit("Could not setup ednssubnet whitelist");
641 ecs_whitelist_delete(whitelist);
642 }
643 #endif /* CLIENT_SUBNET */
644
645 /** check that the modules exist, are compiled in */
646 static void
check_modules_exist(const char * module_conf)647 check_modules_exist(const char* module_conf)
648 {
649 const char** names = module_list_avail();
650 const char* s = module_conf;
651 while(*s) {
652 int i = 0;
653 int is_ok = 0;
654 while(*s && isspace((unsigned char)*s))
655 s++;
656 if(!*s) break;
657 while(names[i]) {
658 if(strncmp(names[i], s, strlen(names[i])) == 0) {
659 is_ok = 1;
660 break;
661 }
662 i++;
663 }
664 if(is_ok == 0) {
665 char n[64];
666 size_t j;
667 n[0]=0;
668 n[sizeof(n)-1]=0;
669 for(j=0; j<sizeof(n)-1; j++) {
670 if(!s[j] || isspace((unsigned char)s[j])) {
671 n[j] = 0;
672 break;
673 }
674 n[j] = s[j];
675 }
676 fatal_exit("Unknown value in module-config, module: "
677 "'%s'. This module is not present (not "
678 "compiled in); see the list of linked modules "
679 "with unbound -V", n);
680 }
681 s += strlen(names[i]);
682 }
683 }
684
685 /** check configuration for errors */
686 static void
morechecks(struct config_file * cfg)687 morechecks(struct config_file* cfg)
688 {
689 warn_hosts("stub-host", cfg->stubs);
690 warn_hosts("forward-host", cfg->forwards);
691 interfacechecks(cfg);
692 ifautomaticportschecks(cfg->if_automatic_ports);
693 aclchecks(cfg);
694 tcpconnlimitchecks(cfg);
695
696 if(cfg->verbosity < 0)
697 fatal_exit("verbosity value < 0");
698 if(cfg->num_threads <= 0 || cfg->num_threads > 10000)
699 fatal_exit("num_threads value weird");
700 if(!cfg->do_ip4 && !cfg->do_ip6)
701 fatal_exit("ip4 and ip6 are both disabled, pointless");
702 if(!cfg->do_ip4 && cfg->prefer_ip4)
703 fatal_exit("cannot prefer and disable ip4, pointless");
704 if(!cfg->do_ip6 && cfg->prefer_ip6)
705 fatal_exit("cannot prefer and disable ip6, pointless");
706 if(!cfg->do_udp && !cfg->do_tcp)
707 fatal_exit("udp and tcp are both disabled, pointless");
708 if(cfg->edns_buffer_size > cfg->msg_buffer_size)
709 fatal_exit("edns-buffer-size larger than msg-buffer-size, "
710 "answers will not fit in processing buffer");
711 #ifdef UB_ON_WINDOWS
712 w_config_adjust_directory(cfg);
713 #endif
714 if(cfg->chrootdir && cfg->chrootdir[0] &&
715 cfg->chrootdir[strlen(cfg->chrootdir)-1] == '/')
716 fatal_exit("chootdir %s has trailing slash '/' please remove.",
717 cfg->chrootdir);
718 if(cfg->chrootdir && cfg->chrootdir[0] &&
719 !is_dir(cfg->chrootdir)) {
720 fatal_exit("bad chroot directory");
721 }
722 if(cfg->directory && cfg->directory[0]) {
723 char* ad = fname_after_chroot(cfg->directory, cfg, 0);
724 if(!ad) fatal_exit("out of memory");
725 if(!is_dir(ad)) fatal_exit("bad chdir directory");
726 free(ad);
727 }
728 if( (cfg->chrootdir && cfg->chrootdir[0]) ||
729 (cfg->directory && cfg->directory[0])) {
730 if(cfg->pidfile && cfg->pidfile[0]) {
731 char* ad = (cfg->pidfile[0]=='/')?strdup(cfg->pidfile):
732 fname_after_chroot(cfg->pidfile, cfg, 1);
733 char* bd = basedir(ad);
734 if(bd && !is_dir(bd))
735 fatal_exit("pidfile directory does not exist");
736 free(ad);
737 }
738 if(cfg->logfile && cfg->logfile[0]) {
739 char* ad = fname_after_chroot(cfg->logfile, cfg, 1);
740 char* bd = basedir(ad);
741 if(bd && !is_dir(bd))
742 fatal_exit("logfile directory does not exist");
743 free(ad);
744 }
745 }
746
747 check_chroot_filelist("file with root-hints",
748 cfg->root_hints, cfg->chrootdir, cfg);
749 check_chroot_filelist("trust-anchor-file",
750 cfg->trust_anchor_file_list, cfg->chrootdir, cfg);
751 check_chroot_filelist("auto-trust-anchor-file",
752 cfg->auto_trust_anchor_file_list, cfg->chrootdir, cfg);
753 check_chroot_filelist_wild("trusted-keys-file",
754 cfg->trusted_keys_file_list, cfg->chrootdir, cfg);
755 if(cfg->disable_edns_do && strstr(cfg->module_conf, "validator")
756 && (cfg->trust_anchor_file_list
757 || cfg->trust_anchor_list
758 || cfg->auto_trust_anchor_file_list
759 || cfg->trusted_keys_file_list)) {
760 char* key = NULL;
761 if(cfg->auto_trust_anchor_file_list)
762 key = cfg->auto_trust_anchor_file_list->str;
763 if(!key && cfg->trust_anchor_file_list)
764 key = cfg->trust_anchor_file_list->str;
765 if(!key && cfg->trust_anchor_list)
766 key = cfg->trust_anchor_list->str;
767 if(!key && cfg->trusted_keys_file_list)
768 key = cfg->trusted_keys_file_list->str;
769 if(!key) key = "";
770 fatal_exit("disable-edns-do does not allow DNSSEC to work, but the validator module uses a trust anchor %s, turn off disable-edns-do or disable validation", key);
771 }
772 #ifdef USE_IPSECMOD
773 if(cfg->ipsecmod_enabled && strstr(cfg->module_conf, "ipsecmod")) {
774 /* only check hook if enabled */
775 check_chroot_string("ipsecmod-hook", &cfg->ipsecmod_hook,
776 cfg->chrootdir, cfg);
777 }
778 #endif
779 /* remove chroot setting so that modules are not stripping pathnames */
780 free(cfg->chrootdir);
781 cfg->chrootdir = NULL;
782
783 /* check that the modules listed in module_conf exist */
784 check_modules_exist(cfg->module_conf);
785
786 /* Respip is known to *not* work with dns64. */
787 if(strcmp(cfg->module_conf, "iterator") != 0
788 && strcmp(cfg->module_conf, "validator iterator") != 0
789 && strcmp(cfg->module_conf, "dns64 validator iterator") != 0
790 && strcmp(cfg->module_conf, "dns64 iterator") != 0
791 && strcmp(cfg->module_conf, "respip iterator") != 0
792 && strcmp(cfg->module_conf, "respip validator iterator") != 0
793 && strcmp(cfg->module_conf, "respip dns64 validator iterator") != 0
794 && strcmp(cfg->module_conf, "respip dns64 iterator") != 0
795 #ifdef WITH_PYTHONMODULE
796 && strcmp(cfg->module_conf, "python iterator") != 0
797 && strcmp(cfg->module_conf, "python respip iterator") != 0
798 && strcmp(cfg->module_conf, "python validator iterator") != 0
799 && strcmp(cfg->module_conf, "python respip validator iterator") != 0
800 && strcmp(cfg->module_conf, "validator python iterator") != 0
801 && strcmp(cfg->module_conf, "dns64 python iterator") != 0
802 && strcmp(cfg->module_conf, "dns64 python validator iterator") != 0
803 && strcmp(cfg->module_conf, "dns64 validator python iterator") != 0
804 && strcmp(cfg->module_conf, "python dns64 iterator") != 0
805 && strcmp(cfg->module_conf, "python dns64 validator iterator") != 0
806 #endif
807 #ifdef WITH_DYNLIBMODULE
808 && strcmp(cfg->module_conf, "dynlib iterator") != 0
809 && strcmp(cfg->module_conf, "dynlib dynlib iterator") != 0
810 && strcmp(cfg->module_conf, "dynlib dynlib dynlib iterator") != 0
811 && strcmp(cfg->module_conf, "python dynlib iterator") != 0
812 && strcmp(cfg->module_conf, "python dynlib dynlib iterator") != 0
813 && strcmp(cfg->module_conf, "python dynlib dynlib dynlib iterator") != 0
814 && strcmp(cfg->module_conf, "dynlib respip iterator") != 0
815 && strcmp(cfg->module_conf, "dynlib validator iterator") != 0
816 && strcmp(cfg->module_conf, "dynlib dynlib validator iterator") != 0
817 && strcmp(cfg->module_conf, "dynlib dynlib dynlib validator iterator") != 0
818 && strcmp(cfg->module_conf, "python dynlib validator iterator") != 0
819 && strcmp(cfg->module_conf, "python dynlib dynlib validator iterator") != 0
820 && strcmp(cfg->module_conf, "python dynlib dynlib dynlib validator iterator") != 0
821 && strcmp(cfg->module_conf, "dynlib respip validator iterator") != 0
822 && strcmp(cfg->module_conf, "validator dynlib iterator") != 0
823 && strcmp(cfg->module_conf, "dns64 dynlib iterator") != 0
824 && strcmp(cfg->module_conf, "dns64 dynlib validator iterator") != 0
825 && strcmp(cfg->module_conf, "dns64 validator dynlib iterator") != 0
826 && strcmp(cfg->module_conf, "dynlib dns64 iterator") != 0
827 && strcmp(cfg->module_conf, "dynlib dns64 validator iterator") != 0
828 && strcmp(cfg->module_conf, "dynlib dns64 cachedb iterator") != 0
829 && strcmp(cfg->module_conf, "dynlib dns64 validator cachedb iterator") != 0
830 && strcmp(cfg->module_conf, "dns64 dynlib cachedb iterator") != 0
831 && strcmp(cfg->module_conf, "dns64 dynlib validator cachedb iterator") != 0
832 && strcmp(cfg->module_conf, "dynlib cachedb iterator") != 0
833 && strcmp(cfg->module_conf, "dynlib respip cachedb iterator") != 0
834 && strcmp(cfg->module_conf, "dynlib validator cachedb iterator") != 0
835 && strcmp(cfg->module_conf, "dynlib respip validator cachedb iterator") != 0
836 && strcmp(cfg->module_conf, "cachedb dynlib iterator") != 0
837 && strcmp(cfg->module_conf, "respip cachedb dynlib iterator") != 0
838 && strcmp(cfg->module_conf, "validator cachedb dynlib iterator") != 0
839 && strcmp(cfg->module_conf, "respip validator cachedb dynlib iterator") != 0
840 && strcmp(cfg->module_conf, "validator dynlib cachedb iterator") != 0
841 && strcmp(cfg->module_conf, "respip validator dynlib cachedb iterator") != 0
842 && strcmp(cfg->module_conf, "dynlib subnetcache iterator") != 0
843 && strcmp(cfg->module_conf, "dynlib respip subnetcache iterator") != 0
844 && strcmp(cfg->module_conf, "subnetcache dynlib iterator") != 0
845 && strcmp(cfg->module_conf, "respip subnetcache dynlib iterator") != 0
846 && strcmp(cfg->module_conf, "dynlib subnetcache validator iterator") != 0
847 && strcmp(cfg->module_conf, "dynlib respip subnetcache validator iterator") != 0
848 && strcmp(cfg->module_conf, "subnetcache dynlib validator iterator") != 0
849 && strcmp(cfg->module_conf, "respip subnetcache dynlib validator iterator") != 0
850 && strcmp(cfg->module_conf, "subnetcache validator dynlib iterator") != 0
851 && strcmp(cfg->module_conf, "respip subnetcache validator dynlib iterator") != 0
852 && strcmp(cfg->module_conf, "dynlib ipsecmod iterator") != 0
853 && strcmp(cfg->module_conf, "dynlib ipsecmod respip iterator") != 0
854 && strcmp(cfg->module_conf, "ipsecmod dynlib iterator") != 0
855 && strcmp(cfg->module_conf, "ipsecmod dynlib respip iterator") != 0
856 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0
857 && strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0
858 && strcmp(cfg->module_conf, "dynlib ipsecmod validator iterator") != 0
859 && strcmp(cfg->module_conf, "dynlib ipsecmod respip validator iterator") != 0
860 && strcmp(cfg->module_conf, "ipsecmod dynlib validator iterator") != 0
861 && strcmp(cfg->module_conf, "ipsecmod dynlib respip validator iterator") != 0
862 && strcmp(cfg->module_conf, "ipsecmod validator dynlib iterator") != 0
863 && strcmp(cfg->module_conf, "ipsecmod respip validator dynlib iterator") != 0
864 #endif
865 #ifdef USE_CACHEDB
866 && strcmp(cfg->module_conf, "validator cachedb iterator") != 0
867 && strcmp(cfg->module_conf, "respip validator cachedb iterator") != 0
868 && strcmp(cfg->module_conf, "cachedb iterator") != 0
869 && strcmp(cfg->module_conf, "respip cachedb iterator") != 0
870 && strcmp(cfg->module_conf, "dns64 validator cachedb iterator") != 0
871 && strcmp(cfg->module_conf, "dns64 cachedb iterator") != 0
872 #endif
873 #if defined(WITH_PYTHONMODULE) && defined(USE_CACHEDB)
874 && strcmp(cfg->module_conf, "python dns64 cachedb iterator") != 0
875 && strcmp(cfg->module_conf, "python dns64 validator cachedb iterator") != 0
876 && strcmp(cfg->module_conf, "dns64 python cachedb iterator") != 0
877 && strcmp(cfg->module_conf, "dns64 python validator cachedb iterator") != 0
878 && strcmp(cfg->module_conf, "python cachedb iterator") != 0
879 && strcmp(cfg->module_conf, "python respip cachedb iterator") != 0
880 && strcmp(cfg->module_conf, "python validator cachedb iterator") != 0
881 && strcmp(cfg->module_conf, "python respip validator cachedb iterator") != 0
882 && strcmp(cfg->module_conf, "cachedb python iterator") != 0
883 && strcmp(cfg->module_conf, "respip cachedb python iterator") != 0
884 && strcmp(cfg->module_conf, "validator cachedb python iterator") != 0
885 && strcmp(cfg->module_conf, "respip validator cachedb python iterator") != 0
886 && strcmp(cfg->module_conf, "validator python cachedb iterator") != 0
887 && strcmp(cfg->module_conf, "respip validator python cachedb iterator") != 0
888 #endif
889 #if defined(CLIENT_SUBNET) && defined(USE_CACHEDB)
890 && strcmp(cfg->module_conf, "respip subnetcache validator cachedb iterator") != 0
891 && strcmp(cfg->module_conf, "subnetcache validator cachedb iterator") != 0
892 #endif
893 #ifdef CLIENT_SUBNET
894 && strcmp(cfg->module_conf, "subnetcache iterator") != 0
895 && strcmp(cfg->module_conf, "respip subnetcache iterator") != 0
896 && strcmp(cfg->module_conf, "subnetcache validator iterator") != 0
897 && strcmp(cfg->module_conf, "respip subnetcache validator iterator") != 0
898 && strcmp(cfg->module_conf, "dns64 subnetcache iterator") != 0
899 && strcmp(cfg->module_conf, "dns64 subnetcache validator iterator") != 0
900 && strcmp(cfg->module_conf, "dns64 subnetcache respip iterator") != 0
901 && strcmp(cfg->module_conf, "dns64 subnetcache respip validator iterator") != 0
902 #endif
903 #if defined(WITH_PYTHONMODULE) && defined(CLIENT_SUBNET)
904 && strcmp(cfg->module_conf, "python subnetcache iterator") != 0
905 && strcmp(cfg->module_conf, "python respip subnetcache iterator") != 0
906 && strcmp(cfg->module_conf, "subnetcache python iterator") != 0
907 && strcmp(cfg->module_conf, "respip subnetcache python iterator") != 0
908 && strcmp(cfg->module_conf, "python subnetcache validator iterator") != 0
909 && strcmp(cfg->module_conf, "python respip subnetcache validator iterator") != 0
910 && strcmp(cfg->module_conf, "subnetcache python validator iterator") != 0
911 && strcmp(cfg->module_conf, "respip subnetcache python validator iterator") != 0
912 && strcmp(cfg->module_conf, "subnetcache validator python iterator") != 0
913 && strcmp(cfg->module_conf, "respip subnetcache validator python iterator") != 0
914 #endif
915 #ifdef USE_IPSECMOD
916 && strcmp(cfg->module_conf, "ipsecmod iterator") != 0
917 && strcmp(cfg->module_conf, "ipsecmod respip iterator") != 0
918 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0
919 && strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0
920 #endif
921 #if defined(WITH_PYTHONMODULE) && defined(USE_IPSECMOD)
922 && strcmp(cfg->module_conf, "python ipsecmod iterator") != 0
923 && strcmp(cfg->module_conf, "python ipsecmod respip iterator") != 0
924 && strcmp(cfg->module_conf, "ipsecmod python iterator") != 0
925 && strcmp(cfg->module_conf, "ipsecmod python respip iterator") != 0
926 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0
927 && strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0
928 && strcmp(cfg->module_conf, "python ipsecmod validator iterator") != 0
929 && strcmp(cfg->module_conf, "python ipsecmod respip validator iterator") != 0
930 && strcmp(cfg->module_conf, "ipsecmod python validator iterator") != 0
931 && strcmp(cfg->module_conf, "ipsecmod python respip validator iterator") != 0
932 && strcmp(cfg->module_conf, "ipsecmod validator python iterator") != 0
933 && strcmp(cfg->module_conf, "ipsecmod respip validator python iterator") != 0
934 #endif
935 #ifdef USE_IPSET
936 && strcmp(cfg->module_conf, "validator ipset iterator") != 0
937 && strcmp(cfg->module_conf, "validator ipset respip iterator") != 0
938 && strcmp(cfg->module_conf, "ipset iterator") != 0
939 && strcmp(cfg->module_conf, "ipset respip iterator") != 0
940 #endif
941 ) {
942 fatal_exit("module conf '%s' is not known to work",
943 cfg->module_conf);
944 }
945
946 #ifdef HAVE_GETPWNAM
947 if(cfg->username && cfg->username[0]) {
948 if(getpwnam(cfg->username) == NULL)
949 fatal_exit("user '%s' does not exist.", cfg->username);
950 # ifdef HAVE_ENDPWENT
951 endpwent();
952 # endif
953 }
954 #endif
955 if(cfg->remote_control_enable && options_remote_is_address(cfg)
956 && cfg->control_use_cert) {
957 check_chroot_string("server-key-file", &cfg->server_key_file,
958 cfg->chrootdir, cfg);
959 check_chroot_string("server-cert-file", &cfg->server_cert_file,
960 cfg->chrootdir, cfg);
961 if(!is_file(cfg->control_key_file))
962 fatal_exit("control-key-file: \"%s\" does not exist",
963 cfg->control_key_file);
964 if(!is_file(cfg->control_cert_file))
965 fatal_exit("control-cert-file: \"%s\" does not exist",
966 cfg->control_cert_file);
967 }
968 if(cfg->remote_control_enable)
969 controlinterfacechecks(cfg);
970
971 donotquerylocalhostcheck(cfg);
972 localzonechecks(cfg);
973 view_and_respipchecks(cfg);
974 #ifdef CLIENT_SUBNET
975 ecs_conf_checks(cfg);
976 #endif
977 }
978
979 /** check forwards */
980 static void
check_fwd(struct config_file * cfg)981 check_fwd(struct config_file* cfg)
982 {
983 struct iter_forwards* fwd = forwards_create();
984 if(!fwd || !forwards_apply_cfg(fwd, cfg)) {
985 fatal_exit("Could not set forward zones");
986 }
987 forwards_delete(fwd);
988 }
989
990 /** check hints */
991 static void
check_hints(struct config_file * cfg)992 check_hints(struct config_file* cfg)
993 {
994 struct iter_hints* hints = hints_create();
995 if(!hints || !hints_apply_cfg(hints, cfg)) {
996 fatal_exit("Could not set root or stub hints");
997 }
998 hints_delete(hints);
999 }
1000
1001 /** check auth zones */
1002 static void
check_auth(struct config_file * cfg)1003 check_auth(struct config_file* cfg)
1004 {
1005 int is_rpz = 0;
1006 struct auth_zones* az = auth_zones_create();
1007 if(!az || !auth_zones_apply_cfg(az, cfg, 0, &is_rpz, NULL, NULL)) {
1008 fatal_exit("Could not setup authority zones");
1009 }
1010 if(is_rpz && !strstr(cfg->module_conf, "respip"))
1011 fatal_exit("RPZ requires the respip module");
1012 auth_zones_delete(az);
1013 }
1014
1015 /** check config file */
1016 static void
checkconf(const char * cfgfile,const char * opt,int final,int quiet)1017 checkconf(const char* cfgfile, const char* opt, int final, int quiet)
1018 {
1019 char oldwd[4096];
1020 struct config_file* cfg = config_create();
1021 if(!cfg)
1022 fatal_exit("out of memory");
1023 oldwd[0] = 0;
1024 if(!getcwd(oldwd, sizeof(oldwd))) {
1025 log_err("cannot getcwd: %s", strerror(errno));
1026 oldwd[0] = 0;
1027 }
1028 if(!config_read(cfg, cfgfile, NULL)) {
1029 /* config_read prints messages to stderr */
1030 config_delete(cfg);
1031 exit(1);
1032 }
1033 if(oldwd[0] && chdir(oldwd) == -1)
1034 log_err("cannot chdir(%s): %s", oldwd, strerror(errno));
1035 if(opt) {
1036 print_option(cfg, opt, final);
1037 config_delete(cfg);
1038 return;
1039 }
1040 morechecks(cfg);
1041 check_mod(cfg, iter_get_funcblock());
1042 check_mod(cfg, val_get_funcblock());
1043 #ifdef WITH_PYTHONMODULE
1044 if(strstr(cfg->module_conf, "python"))
1045 check_mod(cfg, pythonmod_get_funcblock());
1046 #endif
1047 check_fwd(cfg);
1048 check_hints(cfg);
1049 check_auth(cfg);
1050 if(!quiet) { printf("unbound-checkconf: no errors in %s\n", cfgfile); }
1051 config_delete(cfg);
1052 }
1053
1054 /** getopt global, in case header files fail to declare it. */
1055 extern int optind;
1056 /** getopt global, in case header files fail to declare it. */
1057 extern char* optarg;
1058
1059 /** Main routine for checkconf */
main(int argc,char * argv[])1060 int main(int argc, char* argv[])
1061 {
1062 int c;
1063 int final = 0;
1064 int quiet = 0;
1065 const char* f;
1066 const char* opt = NULL;
1067 const char* cfgfile = CONFIGFILE;
1068 checklock_start();
1069 log_ident_set("unbound-checkconf");
1070 log_init(NULL, 0, NULL);
1071 #ifdef USE_WINSOCK
1072 /* use registry config file in preference to compiletime location */
1073 if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile")))
1074 cfgfile = CONFIGFILE;
1075 #endif /* USE_WINSOCK */
1076 /* parse the options */
1077 while( (c=getopt(argc, argv, "fhqo:")) != -1) {
1078 switch(c) {
1079 case 'f':
1080 final = 1;
1081 break;
1082 case 'o':
1083 opt = optarg;
1084 break;
1085 case 'q':
1086 quiet = 1;
1087 break;
1088 case '?':
1089 case 'h':
1090 default:
1091 usage();
1092 }
1093 }
1094 argc -= optind;
1095 argv += optind;
1096 if(argc != 0 && argc != 1)
1097 usage();
1098 if(argc == 1)
1099 f = argv[0];
1100 else f = cfgfile;
1101 checkconf(f, opt, final, quiet);
1102 checklock_stop();
1103 return 0;
1104 }
1105