1 /*-
2 * Copyright (c) 2008 Sam Leffler, Errno Consulting
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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD: head/sbin/ifconfig/regdomain.c 200587 2009-12-15 20:44:12Z gavin $
26 */
27
28 #include <sys/param.h>
29 #include <sys/types.h>
30 #include <sys/errno.h>
31 #include <sys/mman.h>
32 #include <sys/sbuf.h>
33 #include <sys/stat.h>
34
35 #include <stdio.h>
36 #include <string.h>
37 #include <ctype.h>
38 #include <fcntl.h>
39 #include <err.h>
40 #include <unistd.h>
41
42 #include <bsdxml.h>
43
44 #include "regdomain.h"
45
46 #include <netproto/802_11/_ieee80211.h>
47
48 #define MAXLEVEL 20
49
50 struct mystate {
51 XML_Parser parser;
52 struct regdata *rdp;
53 struct regdomain *rd; /* current domain */
54 struct netband *netband; /* current netband */
55 struct freqband *freqband; /* current freqband */
56 struct country *country; /* current country */
57 netband_head *curband; /* current netband list */
58 int level;
59 struct sbuf *sbuf[MAXLEVEL];
60 int nident;
61 };
62
63 static int
iseq(const char * a,const char * b)64 iseq(const char *a, const char *b)
65 {
66 return (strcasecmp(a, b) == 0);
67 }
68
69 static void
start_element(void * data,const char * name,const char ** attr)70 start_element(void *data, const char *name, const char **attr)
71 {
72 static netband_head bands_unknown; /* marker for unknown netband */
73 struct mystate *mt;
74 const void *id, *ref, *mode;
75 int i;
76
77 mt = data;
78 if (++mt->level == MAXLEVEL) {
79 /* XXX force parser to abort */
80 return;
81 }
82 mt->sbuf[mt->level] = sbuf_new_auto();
83 id = ref = mode = NULL;
84 for (i = 0; attr[i] != NULL; i += 2) {
85 if (iseq(attr[i], "id")) {
86 id = attr[i+1];
87 } else if (iseq(attr[i], "ref")) {
88 ref = attr[i+1];
89 } else if (iseq(attr[i], "mode")) {
90 mode = attr[i+1];
91 } else
92 printf("%*.*s[%s = %s]\n", mt->level + 1,
93 mt->level + 1, "", attr[i], attr[i+1]);
94 }
95 if (iseq(name, "rd") && mt->rd == NULL) {
96 if (mt->country == NULL) {
97 mt->rd = calloc(1, sizeof(struct regdomain));
98 mt->rd->name = strdup(id);
99 mt->nident++;
100 LIST_INSERT_HEAD(&mt->rdp->domains, mt->rd, next);
101 } else
102 mt->country->rd = (void *)strdup(ref);
103 return;
104 }
105 if (iseq(name, "defcc") && mt->rd != NULL) {
106 mt->rd->cc = (void *)strdup(ref);
107 return;
108 }
109 if (iseq(name, "netband") && mt->curband == NULL && mt->rd != NULL) {
110 if (mode == NULL) {
111 warnx("no mode for netband at line %ld",
112 XML_GetCurrentLineNumber(mt->parser));
113 return;
114 }
115 if (iseq(mode, "11b"))
116 mt->curband = &mt->rd->bands_11b;
117 else if (iseq(mode, "11g"))
118 mt->curband = &mt->rd->bands_11g;
119 else if (iseq(mode, "11a"))
120 mt->curband = &mt->rd->bands_11a;
121 else if (iseq(mode, "11ng"))
122 mt->curband = &mt->rd->bands_11ng;
123 else if (iseq(mode, "11na"))
124 mt->curband = &mt->rd->bands_11na;
125 else if (iseq(mode, "11ac"))
126 mt->curband = &mt->rd->bands_11ac;
127 else if (iseq(mode, "11acg"))
128 mt->curband = &mt->rd->bands_11acg;
129 else {
130 mt->curband = &bands_unknown;
131 warnx("unknown netband mode \"%s\" at line %ld",
132 __DECONST(char *, mode),
133 XML_GetCurrentLineNumber(mt->parser));
134 }
135 return;
136 }
137 if (mt->curband == &bands_unknown) {
138 warnx("ignore \"%s\" of unknown netband at line %ld",
139 name, XML_GetCurrentLineNumber(mt->parser));
140 return;
141 }
142 if (iseq(name, "band") && mt->netband == NULL) {
143 if (mt->curband == NULL) {
144 warnx("band without enclosing netband at line %ld",
145 XML_GetCurrentLineNumber(mt->parser));
146 return;
147 }
148 mt->netband = calloc(1, sizeof(struct netband));
149 LIST_INSERT_HEAD(mt->curband, mt->netband, next);
150 return;
151 }
152 if (iseq(name, "freqband") && mt->freqband == NULL && mt->netband != NULL) {
153 /* XXX handle inlines and merge into table? */
154 if (mt->netband->band != NULL) {
155 warnx("duplicate freqband at line %ld ignored",
156 XML_GetCurrentLineNumber(mt->parser));
157 /* XXX complain */
158 } else
159 mt->netband->band = (void *)strdup(ref);
160 return;
161 }
162
163 if (iseq(name, "country") && mt->country == NULL) {
164 mt->country = calloc(1, sizeof(struct country));
165 mt->country->isoname = strdup(id);
166 mt->country->code = NO_COUNTRY;
167 mt->nident++;
168 LIST_INSERT_HEAD(&mt->rdp->countries, mt->country, next);
169 return;
170 }
171
172 if (iseq(name, "freqband") && mt->freqband == NULL) {
173 mt->freqband = calloc(1, sizeof(struct freqband));
174 mt->freqband->id = strdup(id);
175 mt->nident++;
176 LIST_INSERT_HEAD(&mt->rdp->freqbands, mt->freqband, next);
177 return;
178 }
179 }
180
181 static int
decode_flag(struct mystate * mt,const char * p,int len)182 decode_flag(struct mystate *mt, const char *p, int len)
183 {
184 static const struct {
185 const char *name;
186 int len;
187 uint32_t value;
188 } flags[] = {
189 #define FLAG(x) { #x, sizeof(#x)-1, x }
190 FLAG(IEEE80211_CHAN_A),
191 FLAG(IEEE80211_CHAN_B),
192 FLAG(IEEE80211_CHAN_G),
193 FLAG(IEEE80211_CHAN_HT20),
194 FLAG(IEEE80211_CHAN_HT40),
195 FLAG(IEEE80211_CHAN_VHT20),
196 FLAG(IEEE80211_CHAN_VHT40),
197 FLAG(IEEE80211_CHAN_VHT80),
198 FLAG(IEEE80211_CHAN_VHT160),
199 /*
200 * XXX VHT80P80? This likely should be done by
201 * 80MHz chan logic in net80211 / ifconfig.
202 */
203 FLAG(IEEE80211_CHAN_ST),
204 FLAG(IEEE80211_CHAN_TURBO),
205 FLAG(IEEE80211_CHAN_PASSIVE),
206 FLAG(IEEE80211_CHAN_DFS),
207 FLAG(IEEE80211_CHAN_CCK),
208 FLAG(IEEE80211_CHAN_OFDM),
209 FLAG(IEEE80211_CHAN_2GHZ),
210 FLAG(IEEE80211_CHAN_5GHZ),
211 FLAG(IEEE80211_CHAN_DYN),
212 FLAG(IEEE80211_CHAN_GFSK),
213 FLAG(IEEE80211_CHAN_GSM),
214 FLAG(IEEE80211_CHAN_STURBO),
215 FLAG(IEEE80211_CHAN_HALF),
216 FLAG(IEEE80211_CHAN_QUARTER),
217 FLAG(IEEE80211_CHAN_HT40U),
218 FLAG(IEEE80211_CHAN_HT40D),
219 FLAG(IEEE80211_CHAN_4MSXMIT),
220 FLAG(IEEE80211_CHAN_NOADHOC),
221 FLAG(IEEE80211_CHAN_NOHOSTAP),
222 FLAG(IEEE80211_CHAN_11D),
223 FLAG(IEEE80211_CHAN_FHSS),
224 FLAG(IEEE80211_CHAN_PUREG),
225 FLAG(IEEE80211_CHAN_108A),
226 FLAG(IEEE80211_CHAN_108G),
227 #undef FLAG
228 { "ECM", 3, REQ_ECM },
229 { "INDOOR", 6, REQ_INDOOR },
230 { "OUTDOOR", 7, REQ_OUTDOOR },
231 };
232 size_t i;
233
234 for (i = 0; i < nitems(flags); i++)
235 if (len == flags[i].len && iseq(p, flags[i].name))
236 return flags[i].value;
237 warnx("unknown flag \"%.*s\" at line %ld ignored",
238 len, p, XML_GetCurrentLineNumber(mt->parser));
239 return 0;
240 }
241
242 static void
end_element(void * data,const char * name)243 end_element(void *data, const char *name)
244 {
245 struct mystate *mt;
246 int len;
247 char *p;
248
249 mt = data;
250 sbuf_finish(mt->sbuf[mt->level]);
251 p = sbuf_data(mt->sbuf[mt->level]);
252 len = sbuf_len(mt->sbuf[mt->level]);
253
254 /* <freqband>...</freqband> */
255 if (iseq(name, "freqstart") && mt->freqband != NULL) {
256 mt->freqband->freqStart = strtoul(p, NULL, 0);
257 goto done;
258 }
259 if (iseq(name, "freqend") && mt->freqband != NULL) {
260 mt->freqband->freqEnd = strtoul(p, NULL, 0);
261 goto done;
262 }
263 if (iseq(name, "chanwidth") && mt->freqband != NULL) {
264 mt->freqband->chanWidth = strtoul(p, NULL, 0);
265 goto done;
266 }
267 if (iseq(name, "chansep") && mt->freqband != NULL) {
268 mt->freqband->chanSep = strtoul(p, NULL, 0);
269 goto done;
270 }
271 if (iseq(name, "flags")) {
272 if (mt->freqband != NULL)
273 mt->freqband->flags |= decode_flag(mt, p, len);
274 else if (mt->netband != NULL)
275 mt->netband->flags |= decode_flag(mt, p, len);
276 else {
277 warnx("flags without freqband or netband at line %ld ignored",
278 XML_GetCurrentLineNumber(mt->parser));
279 }
280 goto done;
281 }
282
283 /* <rd> ... </rd> */
284 if (iseq(name, "name") && mt->rd != NULL) {
285 mt->rd->name = strdup(p);
286 goto done;
287 }
288 if (iseq(name, "sku") && mt->rd != NULL) {
289 mt->rd->sku = strtoul(p, NULL, 0);
290 goto done;
291 }
292 if (iseq(name, "netband") && mt->rd != NULL) {
293 mt->curband = NULL;
294 goto done;
295 }
296
297 /* <band> ... </band> */
298 if (iseq(name, "freqband") && mt->netband != NULL) {
299 /* XXX handle inline freqbands */
300 goto done;
301 }
302 if (iseq(name, "maxpower") && mt->netband != NULL) {
303 mt->netband->maxPower = strtoul(p, NULL, 0);
304 goto done;
305 }
306 if (iseq(name, "maxpowerdfs") && mt->netband != NULL) {
307 mt->netband->maxPowerDFS = strtoul(p, NULL, 0);
308 goto done;
309 }
310 if (iseq(name, "maxantgain") && mt->netband != NULL) {
311 mt->netband->maxAntGain = strtoul(p, NULL, 0);
312 goto done;
313 }
314
315 /* <country>...</country> */
316 if (iseq(name, "isocc") && mt->country != NULL) {
317 mt->country->code = strtoul(p, NULL, 0);
318 goto done;
319 }
320 if (iseq(name, "name") && mt->country != NULL) {
321 mt->country->name = strdup(p);
322 goto done;
323 }
324
325 if (len != 0) {
326 warnx("unexpected XML token \"%s\" data \"%s\" at line %ld",
327 name, p, XML_GetCurrentLineNumber(mt->parser));
328 /* XXX goto done? */
329 }
330 /* </freqband> */
331 if (iseq(name, "freqband") && mt->freqband != NULL) {
332 /* XXX must have start/end frequencies */
333 /* XXX must have channel width/sep */
334 mt->freqband = NULL;
335 goto done;
336 }
337 /* </rd> */
338 if (iseq(name, "rd") && mt->rd != NULL) {
339 mt->rd = NULL;
340 goto done;
341 }
342 /* </band> */
343 if (iseq(name, "band") && mt->netband != NULL) {
344 if (mt->netband->band == NULL) {
345 warnx("no freqbands for band at line %ld",
346 XML_GetCurrentLineNumber(mt->parser));
347 }
348 if (mt->netband->maxPower == 0) {
349 warnx("no maxpower for band at line %ld",
350 XML_GetCurrentLineNumber(mt->parser));
351 }
352 /* default max power w/ DFS to max power */
353 if (mt->netband->maxPowerDFS == 0)
354 mt->netband->maxPowerDFS = mt->netband->maxPower;
355 mt->netband = NULL;
356 goto done;
357 }
358 /* </netband> */
359 if (iseq(name, "netband") && mt->netband != NULL) {
360 mt->curband = NULL;
361 goto done;
362 }
363 /* </country> */
364 if (iseq(name, "country") && mt->country != NULL) {
365 if (mt->country->code == NO_COUNTRY) {
366 warnx("no ISO cc for country at line %ld",
367 XML_GetCurrentLineNumber(mt->parser));
368 }
369 if (mt->country->name == NULL) {
370 warnx("no name for country at line %ld",
371 XML_GetCurrentLineNumber(mt->parser));
372 }
373 if (mt->country->rd == NULL) {
374 warnx("no regdomain reference for country at line %ld",
375 XML_GetCurrentLineNumber(mt->parser));
376 }
377 mt->country = NULL;
378 goto done;
379 }
380 done:
381 sbuf_delete(mt->sbuf[mt->level]);
382 mt->sbuf[mt->level--] = NULL;
383 }
384
385 static void
char_data(void * data,const XML_Char * s,int len)386 char_data(void *data, const XML_Char *s, int len)
387 {
388 struct mystate *mt;
389 const char *b, *e;
390
391 mt = data;
392
393 b = s;
394 e = s + len-1;
395 for (; isspace(*b) && b < e; b++)
396 ;
397 for (; isspace(*e) && e > b; e++)
398 ;
399 if (e != b || (*b != '\0' && !isspace(*b)))
400 sbuf_bcat(mt->sbuf[mt->level], b, e-b+1);
401 }
402
403 static void *
findid(struct regdata * rdp,const void * id,enum IdentType type)404 findid(struct regdata *rdp, const void *id, enum IdentType type)
405 {
406 struct ident *ip;
407
408 for (ip = rdp->ident; ip->id != NULL; ip++)
409 if (ip->type == type && iseq(ip->id, id))
410 return ip->p;
411 return NULL;
412 }
413
414 /*
415 * Parse an regdomain XML configuration and build the internal representation.
416 */
417 int
lib80211_regdomain_readconfig(struct regdata * rdp,const void * p,size_t len)418 lib80211_regdomain_readconfig(struct regdata *rdp, const void *p, size_t len)
419 {
420 struct mystate *mt;
421 struct regdomain *dp;
422 struct country *cp;
423 struct freqband *fp;
424 struct netband *nb;
425 const void *id;
426 int i, errors;
427
428 memset(rdp, 0, sizeof(struct regdata));
429 mt = calloc(1, sizeof(struct mystate));
430 if (mt == NULL)
431 return ENOMEM;
432 /* parse the XML input */
433 mt->rdp = rdp;
434 mt->parser = XML_ParserCreate(NULL);
435 XML_SetUserData(mt->parser, mt);
436 XML_SetElementHandler(mt->parser, start_element, end_element);
437 XML_SetCharacterDataHandler(mt->parser, char_data);
438 if (XML_Parse(mt->parser, p, len, 1) != XML_STATUS_OK) {
439 warnx("%s: %s at line %ld", __func__,
440 XML_ErrorString(XML_GetErrorCode(mt->parser)),
441 XML_GetCurrentLineNumber(mt->parser));
442 return -1;
443 }
444 XML_ParserFree(mt->parser);
445
446 /* setup the identifer table */
447 rdp->ident = calloc(sizeof(struct ident), mt->nident + 1);
448 if (rdp->ident == NULL)
449 return ENOMEM;
450 free(mt);
451
452 errors = 0;
453 i = 0;
454 LIST_FOREACH(dp, &rdp->domains, next) {
455 rdp->ident[i].id = dp->name;
456 rdp->ident[i].p = dp;
457 rdp->ident[i].type = DOMAIN;
458 i++;
459 }
460 LIST_FOREACH(fp, &rdp->freqbands, next) {
461 rdp->ident[i].id = fp->id;
462 rdp->ident[i].p = fp;
463 rdp->ident[i].type = FREQBAND;
464 i++;
465 }
466 LIST_FOREACH(cp, &rdp->countries, next) {
467 rdp->ident[i].id = cp->isoname;
468 rdp->ident[i].p = cp;
469 rdp->ident[i].type = COUNTRY;
470 i++;
471 }
472
473 /* patch references */
474 LIST_FOREACH(dp, &rdp->domains, next) {
475 if (dp->cc != NULL) {
476 id = dp->cc;
477 dp->cc = findid(rdp, id, COUNTRY);
478 if (dp->cc == NULL) {
479 warnx("undefined country \"%s\"",
480 __DECONST(char *, id));
481 errors++;
482 }
483 free(__DECONST(char *, id));
484 }
485 LIST_FOREACH(nb, &dp->bands_11b, next) {
486 id = findid(rdp, nb->band, FREQBAND);
487 if (id == NULL) {
488 warnx("undefined 11b band \"%s\"",
489 __DECONST(char *, nb->band));
490 errors++;
491 }
492 nb->band = id;
493 }
494 LIST_FOREACH(nb, &dp->bands_11g, next) {
495 id = findid(rdp, nb->band, FREQBAND);
496 if (id == NULL) {
497 warnx("undefined 11g band \"%s\"",
498 __DECONST(char *, nb->band));
499 errors++;
500 }
501 nb->band = id;
502 }
503 LIST_FOREACH(nb, &dp->bands_11a, next) {
504 id = findid(rdp, nb->band, FREQBAND);
505 if (id == NULL) {
506 warnx("undefined 11a band \"%s\"",
507 __DECONST(char *, nb->band));
508 errors++;
509 }
510 nb->band = id;
511 }
512 LIST_FOREACH(nb, &dp->bands_11ng, next) {
513 id = findid(rdp, nb->band, FREQBAND);
514 if (id == NULL) {
515 warnx("undefined 11ng band \"%s\"",
516 __DECONST(char *, nb->band));
517 errors++;
518 }
519 nb->band = id;
520 }
521 LIST_FOREACH(nb, &dp->bands_11na, next) {
522 id = findid(rdp, nb->band, FREQBAND);
523 if (id == NULL) {
524 warnx("undefined 11na band \"%s\"",
525 __DECONST(char *, nb->band));
526 errors++;
527 }
528 nb->band = id;
529 }
530 LIST_FOREACH(nb, &dp->bands_11ac, next) {
531 id = findid(rdp, nb->band, FREQBAND);
532 if (id == NULL) {
533 warnx("undefined 11ac band \"%s\"",
534 __DECONST(char *, nb->band));
535 errors++;
536 }
537 nb->band = id;
538 }
539 LIST_FOREACH(nb, &dp->bands_11acg, next) {
540 id = findid(rdp, nb->band, FREQBAND);
541 if (id == NULL) {
542 warnx("undefined 11acg band \"%s\"",
543 __DECONST(char *, nb->band));
544 errors++;
545 }
546 nb->band = id;
547 }
548 }
549 LIST_FOREACH(cp, &rdp->countries, next) {
550 id = cp->rd;
551 cp->rd = findid(rdp, id, DOMAIN);
552 if (cp->rd == NULL) {
553 warnx("undefined country \"%s\"",
554 __DECONST(char *, id));
555 errors++;
556 }
557 free(__DECONST(char *, id));
558 }
559
560 return errors ? EINVAL : 0;
561 }
562
563 static void
cleanup_bands(netband_head * head)564 cleanup_bands(netband_head *head)
565 {
566 struct netband *nb;
567
568 for (;;) {
569 nb = LIST_FIRST(head);
570 if (nb == NULL)
571 break;
572 LIST_REMOVE(nb, next);
573 free(nb);
574 }
575 }
576
577 /*
578 * Cleanup state/resources for a previously parsed regdomain database.
579 */
580 void
lib80211_regdomain_cleanup(struct regdata * rdp)581 lib80211_regdomain_cleanup(struct regdata *rdp)
582 {
583
584 free(rdp->ident);
585 rdp->ident = NULL;
586 for (;;) {
587 struct regdomain *dp = LIST_FIRST(&rdp->domains);
588 if (dp == NULL)
589 break;
590 LIST_REMOVE(dp, next);
591 cleanup_bands(&dp->bands_11b);
592 cleanup_bands(&dp->bands_11g);
593 cleanup_bands(&dp->bands_11a);
594 cleanup_bands(&dp->bands_11ng);
595 cleanup_bands(&dp->bands_11na);
596 cleanup_bands(&dp->bands_11ac);
597 cleanup_bands(&dp->bands_11acg);
598 if (dp->name != NULL)
599 free(__DECONST(char *, dp->name));
600 }
601 for (;;) {
602 struct country *cp = LIST_FIRST(&rdp->countries);
603 if (cp == NULL)
604 break;
605 LIST_REMOVE(cp, next);
606 if (cp->name != NULL)
607 free(__DECONST(char *, cp->name));
608 free(cp);
609 }
610 for (;;) {
611 struct freqband *fp = LIST_FIRST(&rdp->freqbands);
612 if (fp == NULL)
613 break;
614 LIST_REMOVE(fp, next);
615 free(fp);
616 }
617 }
618
619 struct regdata *
lib80211_alloc_regdata(void)620 lib80211_alloc_regdata(void)
621 {
622 struct regdata *rdp;
623 struct stat sb;
624 void *xml;
625 int fd;
626
627 rdp = calloc(1, sizeof(struct regdata));
628
629 fd = open(_PATH_REGDOMAIN, O_RDONLY);
630 if (fd < 0) {
631 #ifdef DEBUG
632 warn("%s: open(%s)", __func__, _PATH_REGDOMAIN);
633 #endif
634 free(rdp);
635 return NULL;
636 }
637 if (fstat(fd, &sb) < 0) {
638 #ifdef DEBUG
639 warn("%s: fstat(%s)", __func__, _PATH_REGDOMAIN);
640 #endif
641 close(fd);
642 free(rdp);
643 return NULL;
644 }
645 xml = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
646 if (xml == MAP_FAILED) {
647 #ifdef DEBUG
648 warn("%s: mmap", __func__);
649 #endif
650 close(fd);
651 free(rdp);
652 return NULL;
653 }
654 if (lib80211_regdomain_readconfig(rdp, xml, sb.st_size) != 0) {
655 #ifdef DEBUG
656 warn("%s: error reading regulatory database", __func__);
657 #endif
658 munmap(xml, sb.st_size);
659 close(fd);
660 free(rdp);
661 return NULL;
662 }
663 munmap(xml, sb.st_size);
664 close(fd);
665
666 return rdp;
667 }
668
669 void
lib80211_free_regdata(struct regdata * rdp)670 lib80211_free_regdata(struct regdata *rdp)
671 {
672 lib80211_regdomain_cleanup(rdp);
673 free(rdp);
674 }
675
676 /*
677 * Lookup a regdomain by SKU.
678 */
679 const struct regdomain *
lib80211_regdomain_findbysku(const struct regdata * rdp,enum RegdomainCode sku)680 lib80211_regdomain_findbysku(const struct regdata *rdp, enum RegdomainCode sku)
681 {
682 const struct regdomain *dp;
683
684 LIST_FOREACH(dp, &rdp->domains, next) {
685 if (dp->sku == sku)
686 return dp;
687 }
688 return NULL;
689 }
690
691 /*
692 * Lookup a regdomain by name.
693 */
694 const struct regdomain *
lib80211_regdomain_findbyname(const struct regdata * rdp,const char * name)695 lib80211_regdomain_findbyname(const struct regdata *rdp, const char *name)
696 {
697 const struct regdomain *dp;
698
699 LIST_FOREACH(dp, &rdp->domains, next) {
700 if (iseq(dp->name, name))
701 return dp;
702 }
703 return NULL;
704 }
705
706 /*
707 * Lookup a country by ISO country code.
708 */
709 const struct country *
lib80211_country_findbycc(const struct regdata * rdp,enum ISOCountryCode cc)710 lib80211_country_findbycc(const struct regdata *rdp, enum ISOCountryCode cc)
711 {
712 const struct country *cp;
713
714 LIST_FOREACH(cp, &rdp->countries, next) {
715 if (cp->code == cc)
716 return cp;
717 }
718 return NULL;
719 }
720
721 /*
722 * Lookup a country by ISO/long name.
723 */
724 const struct country *
lib80211_country_findbyname(const struct regdata * rdp,const char * name)725 lib80211_country_findbyname(const struct regdata *rdp, const char *name)
726 {
727 const struct country *cp;
728 int len;
729
730 LIST_FOREACH(cp, &rdp->countries, next) {
731 if (iseq(cp->isoname, name))
732 return cp;
733 }
734 len = strlen(name);
735 LIST_FOREACH(cp, &rdp->countries, next) {
736 if (strncasecmp(cp->name, name, len) == 0)
737 return cp;
738 }
739 return NULL;
740 }
741